RU2784913C1 - Working tool for a hand-held machine - Google Patents

Abstract

FIELD: machine tools.

SUBSTANCE: group of inventions relates to a working tool for processing a workpiece, made for installation on a hand-held machine. Working tool comprises a attachment means configured to be connected detachably to the output shaft of the hand-held machine, attached to the holder so that the axis of the output shaft and the axis of rotation of the working tool are substantially aligned, and made with a recess. The attachment means has at least one clamping foot limiting the recess at least partially in the radial direction extending from the axis of rotation of the tool. The clamping foot in the direction substantially radial relative to the axis of rotation of the tool is limited by a first boundary edge located on the first boundary circumference extending around the axis of rotation of the tool. The clamping foot extends at least substantially along a plane orthogonal to the axis of rotation of the tool. The clamping foot is made in the form of an elastic foot and is designed to connect the working tool and the holder so that the working tool at least partially perceives the loads acting in the axial direction aligned with the axis of rotation of the tool due to elastic deformation or elastic bending.

EFFECT: working tool can be replaced quickly.

15 cl, 18 dwg

Description

The field of technology to which the invention relates

The present invention relates to a working tool, primarily for processing a workpiece, designed to be installed on a manual machine, configured to actuate this working tool by rotating around the axis of the output shaft, which is part of the holder, containing at least one attachment made with the possibility of detachable connection with the output shaft of a manual machine, attached to the holder in such a way that the axis of the output shaft and the axis of rotation of the working tool essentially coincide, and having a recess.

State of the art

DE 296 05 728 U1 describes a saw blade comprising a cutting insert with a central fixing hole for positive locking on an output shaft oscillating about its longitudinal axis, the cutting insert being circular in shape.

Disclosure of invention

The objective of the present invention is to improve the working tool for a technological machine, especially a manual machine, by means of simple constructive measures.

The specified problem is solved in a working tool, primarily for processing a workpiece, intended for installation on a manual machine, made with the possibility of actuating this working tool by rotating around the axis of the output shaft, which is part of the holder, containing at least one attachment made with the possibility of detachable connection with the output shaft of a manual machine, attached to the holder in such a way that the axis of the output shaft and the axis of rotation of the working tool essentially coincide, and having a recess.

In the working tool according to the invention, the attachment of the working tool has at least one clamping tab, at least partially limiting the recess in the radial direction extending from the axis of rotation of the tool, the clamping tab in the direction essentially radial with respect to the axis of rotation of the tool is limited by the first boundary an edge located on the first, in particular the minimum, boundary circle passing around the axis of rotation of the tool, and the clamping foot extends at least essentially along a plane orthogonal to the axis of rotation of the tool.

The following is a more detailed description of the invention, made mainly on the example of an illustrative working tool, in particular for use with a technological machine, especially a manual machine, having a holder that rotates around the axis of the output shaft. However, this particular illustrative example should not be understood as limiting the possible range of applications of such a working tool.

A technological machine, primarily a manual machine, is a device having one or more drive motors and, if necessary, one or more transmission mechanisms, as well as at least one output shaft (spindle) with a geometric axis (i.e. here the axis named not a separate physical object, which is a structural element). A holder is installed on the output shaft, directly or through other elements. The holder is a structural element (or group thereof) responsible for transmitting torque to the working body, in particular the working tool, while the holder preferably also serves as a support for the working tool, in particular in a portable technological machine, especially a manual machine, due to which the working tool is both held by the holder alone and loaded with the output torque. The output torque here refers to the torque transmitted to the working tool from the technological machine, especially the manual machine. The same is true for cases where other terms are used in the text, formed using the word "output": they serve to name the corresponding structural elements of a technological machine, primarily a manual machine. The term "drive moment" refers to the power moment perceived by the working tool.

A non-stationary technological machine, in particular a manual machine, has a supporting body, in particular a handle or similar elements, with which it is possible to manipulate the technological machine, in particular a manual machine, with a working tool attached to it, leading and guiding it due to the force applied by the user. Usually portable technological machines, especially manual machines, are equipped with an electric drive motor, however, other constructive types of technological machines, especially manual machines, are also known and suitable for use in the framework of the invention, for example, driven by an internal combustion engine, with hydraulic or pneumatic.

The technological machine, in particular a hand-held machine, allows toolless (i.e. not requiring the use of an auxiliary tool) installation or clamping of working tools, especially for applications with high speeds, so that for fastening the working tool on the holder, preferably no additional, especially removable, safety element, such as, for example, a fixing screw. Technological machine, especially a manual machine, is designed to connect the working tool with the holder (or clamp them) with particular speed and convenience, which allows the operator when operating such a technological machine to carry out a particularly quick change of the working tool. This solution also eliminated the need for an additional work tool, such as a wrench or screwdriver, to connect the work tool to the process machine.

The working tool according to the invention is particularly advantageous due to the construction of at least one clamping tab, which makes it possible to actuate the working tool by means of a manual machine with minimal vibrations, so that the at least one radially extending clamping tab not only causes particularly the preferred transmission of torque from the output shaft of the holder to the working tool, but also allows the working tool to be driven with especially minimized vibration in the state when it is clamped by the holder. This improves the absorption of vibration generated during the operation of the working tool, which can increase as the preload increases in the clamped state.

The attachment device is made with the possibility of a detachable connection with traditional technological machines available on the market, in particular manual machines, which guarantees backward compatibility of the working tool. In this case, backward compatibility is achieved, in particular due to the fact that the first boundary edges of the clamping foot lie on the first boundary circle corresponding to the minimum diameter of conventional working tools available on the market, which makes it possible to center the working tool on traditional holders.

In the context of the present invention, a detachable connection means, in particular, its implementation with the possibility of separating the elements without destroying them.

The first boundary edge can limit the recess of the working tool at least in some areas, and such a limiter, first of all, can be at least one clamping tab.

The working tool may extend substantially in a plane orthogonal to the axis of rotation of the tool.

In particular, the recess can be provided for at least partially enclosing the holder of the manual machine, in particular for enclosing completely.

In the context of the present invention, encirclement or encirclement means, in particular, the position of a structural element in which it is located in at least one plane, for example, a plane orthogonal to the axis of rotation of the tool or the axis of the output shaft, in an angular range of 360 ° around output shaft, especially around the holder, preferably around the clamping mechanism and the driver of the holder, which is part of a technological machine, especially a manual machine.

The word "provided" in the context of the invention should be understood, in particular, as programmed, designed and/or calculated specifically to perform a specific function. By providing an object to perform a specific function is meant, in particular, that the object performs and/or performs this specific function in at least one state of application and/or operation.

In the context of the present invention, an orthogonal plane is understood to mean a plane defined by at least two directions orthogonal to the axis of rotation of the tool. In this case, it should be understood that slight deviations of the directions defining the orthogonal plane are permissible, for example, an angular deviation of up to 5%, in particular up to 4%, preferably up to 3%, even more preferably up to 2%, and most preferably up to 1%, and how to achieve this is within the professional technical knowledge and competence of the specialist.

The axis of the output shaft and the axis of rotation of the tool are here understood to mean, respectively, the imaginary geometric axis of rotation of the technological machine, in particular the output shaft of the manual machine, and the imaginary geometric axis of the working tool.

Preferably, the clamping tab can have a positively locking radial element, in particular provided for forming a positively locking connection for driving the working tool in the circumferential direction around its axis of rotation. In this case, the clamping foot can be made in the form of a radial protrusion or a radial tongue.

In particular, the recess, or rather its contour, may have rotational symmetry of the nth order, primarily of the second order, preferably of the fourth order, more preferably of the sixth order, while n is a natural number from two to infinity.

In the context of the present invention, rotational symmetry refers to the symmetry of the contour of the recess of the working tool, the images ("snapshots") of which, in particular when the working tool is rotated relative to 360 ° around the center, or, what is the same, around its axis of rotation, with respect to to a fixed copy of the working tool, n times appear on the image of the recess of this fixed copy, respectively, they are combined. In this case, the number n must be a natural number in the range from two to infinity.

In the dependent claims, preferred embodiments of the working tool according to the invention are given.

According to the invention, the clamping foot is made in the form of an elastic foot. The clamping tab can be provided for connecting the working tool to the holder in such a way that the loads acting in the axial direction coinciding with the axis of rotation of the tool are at least partially absorbed by the working tool due to elastic deformation, respectively elastic bending. Preferably, the clamping foot has a maximum standard value D of the elasticity coefficient less than 400,000 N/mm. Preferably, the maximum standard value D of the clamping foot elasticity coefficient is in the range of 10,000 to 350,000 N/mm. The maximum standard value D of the elasticity coefficient is preferably obtained from the following expression:

and

where L is the maximum, primarily average, length of the clamping foot between the first boundary circle and the second boundary circle,

b maximum tangential extension of the clamping foot along the second boundary circle,

h is the maximum thickness of the material of the clamping foot along the axial direction coinciding with the axis a of rotation of the tool.

The maximum material thickness h may preferably be between 0.5 and 1.6 mm. This makes it possible to securely fasten the clamping tab by the holder, by clamping the clamping tab at least in some areas in the axial direction along the axis of rotation of the tool, in which the clamping tab is able to elastically bend in the axial direction.

It may be expedient to perform, in which the clamping foot is asymmetrical with respect to any plane of symmetry given by the radial and axial directions determined by the axis of rotation of the tool, in particular does not have mirror symmetry.

In the context of the present invention, any plane of symmetry is understood to mean any plane of symmetry obtained by specifying it in any direction that is radial with respect to the axis of rotation of the tool, forming a radial axis located in the circumferential direction around the axis of rotation of the tool in an angular range of up to 30 ° , in particular up to 60°, preferably up to 90°, more preferably up to 120°, even more preferably up to 180°, and particularly preferably up to 360°.

Such asymmetry makes it possible, in particular, to exclude the possibility of connecting the working tool to the holder on several sides, due to which the working tool is connected to the holder from only one landing side intended to be received by the holder. This makes it possible to achieve, according to the "fool-proof" principle, the immediate detection of errors and / or the elimination of errors due to the fact that the operator receives feedback in the event of an attempt to connect the working tool to the holder on the wrong side, i.e. not intended for its acceptance by the holder.

The working tool has the particular advantage that the design of the at least one clamping claw makes it possible to operate the working tool by means of a hand machine with minimal vibration, so that the asymmetric design of the at least one clamping claw not only results in a particularly efficient transmission of torque from output shaft (spindle) of the holder to the working tool, but also allows the working tool to be operated with a particularly minimized vibration level when it is in the state when it is clamped by the holder. This opens up the possibility of improving the damping of vibration that occurs during the operation of the working tool and increases as the preload increases in the clamped state.

In addition, the asymmetric design of at least one clamping foot makes it possible to uniquely fix the direction of rotation of the working tool around the axis of rotation of the tool, which can ensure that the working tool has a special configuration, suggesting its purpose for processing a workpiece or workpiece structure in only one one direction of rotation.

In addition, it may be expedient to perform, in which the cross section of the clamping foot, resulting from its mental cutting orthogonal to the axis of rotation of the tool plane, is made essentially trapezoidal, in particular essentially rectangular. Preferred options are possible, assuming the execution of the cross section of a conical or truncated cone.

It may be expedient to perform, in which the first boundary circle has at least one fictitious projected edge lying on it, located between two adjacent first boundary edges and extending in the circumferential direction around the axis of rotation of the tool concentrically with the boundary circle.

The circumferential extent of at least one, in particular each, projected edge may be less than the extent of the adjacent first boundary edge, in particular by up to 50%, preferably up to 40%, more preferably up to 30%, still more preferably up to 20%, particularly preferably up to 10% and ideally up to 5%.

The first boundary edge can describe the extent of the clamping foot in the circumferential direction along the first boundary circle, in particular the maximum. The first boundary edge may be provided to enable centering of the working tool with the holder, in particular coarse centering or preliminary centering, when in a state where the working tool is to be connected to the holder.

At least one, in particular each, projected edge has a maximum circumferential extent less than the maximum radial extent of the respective holder element, in particular the clamping mechanism for toolless holders or the threaded stud in the case of conventional holders, so that pre-centering of the operating tool surrounding the holder in the radial direction.

Preferably, the total circumferential extent of all first boundary edges located on the first boundary circle is greater than the total circumferential extent of all projected edges located on the first boundary circle, in particular by up to 100%, preferably up to 80%, more preferably up to 60%, even more preferably up to 40%, particularly preferably up to 20% and ideally up to 10%. Preferably, the projected edge, in particular each of them, is smaller than the first boundary edge adjacent to it.

In the simplest case, the attachment may be in the form of a recess, so that the leash and the clamping mechanism can either be inserted with engagement into it or passed through it. Preferably, when the working tool is in the mounted state on the holder, at least the driver and/or the clamping mechanism of the holder is at least partially engaged in the recess of the attachment of the working tool. Preferably, the driver is provided for at least partial contact with the edge of the working tool, limiting the recess of its attachment, in particular when the working tool is in the mounted state on the holder.

In an alternative expedient embodiment, the attachment device is formed by a bearing flange, in particular disc-shaped or angulated. This makes it possible to give the attachment a particular stability due to the fact that the carrier flange contains a metallic material, such as steel, or consists entirely of it. A particular advantage arising from this lies in the possibility of a reliable connection of the carrier flange with the holder of a technological machine, in particular a manual machine, and its reliable retention by the holder. In addition, the presence of the carrier flange makes it possible to use less material, since the carrier flange can be made thin and still meet the requirements of the working tool.

The articulated bearing flange is designed to be received by the clamping mechanism of the holder, which guarantees a particularly quick and comfortable fit of the working tool. Preferably, the cranked carrier flange can be provided for particularly effective connection to conventional manufacturing machines, in particular manual machines, by fixing the working tool by means of a clamping nut. The clamping nut can fit into the empty recess of the cranked carrier flange, whereby the carrier flange surrounds the clamping nut in at least one plane over 360° at least in some areas.

In addition, it may be expedient to perform, in which the clamping foot essentially in the radial direction with respect to the axis of rotation of the tool is limited by the second boundary edge located on the second, in particular the maximum, boundary circle circumscribed around the axis of rotation of the tool. The second limiting edge can define the recess of the attachment, which makes it possible to center the working tool in a particularly efficient way by relieving the clamping foot in the radial direction. The remoteness of the second boundary edge by a greater radial distance compared to the first boundary edge makes it possible to perceive an increased overturning moment, which ensures a particularly reliable holding of the working tool by the holder.

The following expedient embodiment is possible, in which the working tool has a working area connected to the bearing flange and completely enclosing it, designed to act on the workpiece or workpiece structure. This makes it possible to achieve a separation of functions in a particularly simple way, due to the fact that the bearing flange creates a stable connection with the holder of the technological machine, and the working area has, for example, the required compliance or even rigidity, consistent with the workpiece or workpiece structure to be processed, while, for example, without loosening the connection of the working tool with the holder. Preferably, the bearing flange is connected to the working area by means of a permanent connection, a positive connection and/or a positive connection, first of all being integral with it.

In addition, it may be expedient to implement, in which the working area is located on the carrier flange in such a way that, when the tool is in the attached state, it protrudes above the carrier flange in the axial direction, determined by the axis of rotation of the tool, in the direction oriented towards the holder of the manual machine , in particular up to 2 mm, preferably up to 1 mm, more preferably up to 0.7 mm, even more preferably up to 0.6 mm, particularly preferably up to 0.3 mm, and ideally up to 0 .1 mm. This makes it possible to additionally support the working tool on the holder and increase the effective support radius of the working tool, which causes its additional connection with a power circuit with a technological machine.

The working tool, in particular the working area, can be in the form of a grinding wheel and/or a cutting wheel and/or a roughing wheel, in particular for abrasive removal of material.

In the outward direction to the end of the holder of a technological machine, in particular a manual machine, either the work area can directly adjoin, or, alternatively, a carrier flange can first extend, located between the holder and the work area.

The maximum bearing flange diameter may be from about 20% to 80% of the maximum working tool diameter, in particular from 30% to 70%, preferably from 35% to 60%.

It is proposed that in the area of the bearing flange, the working tool has at least one first, upper, support plane and at least one second, lower, support plane, while these support planes are located essentially perpendicular to the axis of rotation of the tool, spaced from each other by distance t and limit the axial extent of the bearing flange. The first reference plane can be removed from the second reference plane by a distance t of up to 25 mm, in particular up to 20 mm, preferably up to 15 mm, and then in increasing order of preference: up to 10 mm; up to 8 mm; up to 5 mm; up to 3 mm, up to 2 mm; in the most preferred case - up to 1 mm. Such geometric parameters make it possible to make an embodiment of the working tool in which it is particularly flat and stable.

The carrier flange may have a substantially cylindrical side wall extending in an axial direction defined by the axis of rotation of the tool and, in particular, delimiting the work area in a direction radial with respect to the axis of rotation of the tool. In particular, the side wall may have a substantially circular cross section.

In addition, the holder of a manufacturing machine, in particular a manual machine, can be protected against collision with the workpiece by means of, for example, a cup-shaped carrier flange. Preferably, the side wall may be substantially concentric with the first boundary circle and the second boundary circle. Preferably, the side wall extends between the first - top - support plane and the second - bottom - support plane. The side wall may be provided to receive at least a portion of the holder in an area internal to the side wall.

In a preferred embodiment, the side wall can wrap around the axis of rotation of the tool in a substantially radial manner. In another embodiment of the invention, openings or breaks can be present in the contour of the side wall around the axis of rotation a of the tool. In particular, the presence of a closed-turning side wall made it possible to obtain a particularly stable attachment, and thanks to a discontinuous or slotted side wall, in particular, it is possible to obtain an attachment that is particularly light and has a low moment of inertia.

The second support plane can be removed from the technological machine receiving the working tool, in particular the manual machine, at a greater distance than the first support plane, in particular when the working tool is in the installed and/or fixed state on the holder.

In addition, it is proposed that at least one clamping foot has a torque receiving area, in particular forming a driving edge and/or a driving surface, designed to receive torque in the circumferential direction around the axis of rotation of the tool, while the torque receiving area can be formed at least in some areas due to the axial and/or radial extent of the clamping foot. The torque-receiving area can contact the holder of the manufacturing machine by point, in particular linear, preferably surface overlay or contact.

In particular, the torque receiving area may be located between the second, lower reference plane and the first, upper reference plane. Preferably, along the circumferential direction passing around the axis of rotation of the tool, the areas of perception of torque by their respective drive edge and/or drive surface are located at a distance relative to each other, while in particular the minimum distance between these areas, especially between them drive edges and/or drive surfaces, along the circumferential direction of the value of the entire perimeter of the first boundary circle is, in particular, more than 10%, preferably more than 20%, and on the other hand, preferably less than 60%.

The area of perception of torque is provided for transmission to the working tool of the driving torque developed by the technological machine, primarily by a manual machine.

In particular, the torque receiving area, in particular the drive edge and/or the drive surface, can (may) be tilted at a certain angle against the direction of rotation of the holder during operation of the technological machine, especially the manual machine, and the preferred angle of inclination relative to the plane defined by the axial and radial directions with respect to the axis of rotation of the tool, in the circumferential direction around the axis of rotation of the tool, in particular up to 50°, preferably up to 40°, more preferably up to 30°, and particularly preferably up to 25°. Preferably, between the drive surface and/or the drive edge, in particular in a plane at least substantially perpendicular to the axis of the output shaft, an angle is formed with a straight line intersecting at least at one point the axis of the output shaft, as well as the drive surface and /or a drive edge, in particular with a radial direction, in particular less than 80°, preferably less than 60°, and particularly preferably less than 45°. Preferably, the drive surfaces have an inclination with respect to a circumferential direction passing around the axis of rotation of the tool. In particular, each of the drive surfaces forms an angle other than 90° with the circumferential direction.

Preferably, the attachment has at least two clamping tabs, each of which has (one) torque receiving areas, in particular corresponding drive edges and/or drive surfaces, located parallel to each other and at some distance from one another, and in particular, both torque sensing regions are symmetrical about the axis of rotation of the tool.

In addition, it is proposed that the working tool has a working area for processing the workpiece, connected to the bearing flange, in particular with the formation of a permanent connection and/or positively locking. This makes it possible to achieve a particularly efficient separation of functions. A form-fitting connection can be achieved, in particular, by means of a plurality of axial relief-embossed tongues of the carrier flange, which engage in engagement with the work area and positively connect the carrier flange to the work area. Axial raised outwardly embossed tongues can be made in the form of protrusions protruding in the axial direction or pointed petals. Axial embossed tongues may be provided to improve heat dissipation.

It may be expedient to perform, in which the bearing flange defines the recess in the radial direction with respect to the axis of rotation of the tool. In addition, it may be expedient to perform, in which at least one clamping tab, in particular in the form of an elastic console, limits the recess at least in some areas in the radial direction with respect to the axis of rotation of the tool. In addition, it may be expedient to perform, in which the recess is made in the form of a through opening in the material, passing through the entire thickness of the material of the working tool, especially the attachment, and provided for completely enclosing the output shaft, in particular the holder, preferably the driver and the clamping mechanism manual machine. This provides a special stability of the connecting device of the working tool.

Under the connection with the formation of an inseparable connection (i.e. with the closure due to the forces of intermolecular or interatomic cohesion) is understood here, in particular, that the material particles are held together due to intermolecular or interatomic forces, for example, as a result of soldering, welding, gluing and / or vulcanization.

The thickness t of the attachment material is preferably selected from a certain range, according to the lower limit of which it is preferably greater than or equal to 0.2 mm, preferably greater than 0.5 mm, and particularly preferably greater than 0.8 mm, and according to its upper boundary, it is less than or equal to 4 mm, preferably less than 2 mm, and particularly preferably less than 1.5 mm. It is particularly preferred that the thickness t of the material is essentially 1 or 1.5 mm, or preferably also the value of this dimension is between 1 and 1.5 mm. In particular, by choosing a suitable material thickness t from the previously mentioned range, it is possible to obtain a working tool, on the one hand, light and therefore having a small moment of inertia, and on the other hand, sufficiently stable.

In addition, it may be expedient to perform, in which the ratio between the diameter D1 of the first boundary circle and the diameter D2 of the second boundary circle is in the range from 50 to 95%, in particular from 60 to 90%, preferably from 65 to 85%, and especially preferably from 70 to 80%. In particular, the first boundary circle may have a diameter D1 of about 22 mm, for example 22.2 mm. Preferably, the second boundary circle may have a diameter D2 of about 29 mm, in which case the ratio between the diameter D1 of the first boundary circle and the diameter D2 of the second boundary circle is 77%. This makes it possible to fit the working tool on numerous traditional technological machines, in particular manual machines.

In addition, it is preferable that the first boundary circle may have a diameter D1 of about 16 mm and the second boundary circle may have a diameter D2 in the range of about 21 to 22.5 mm, so that the working tool can be adapted to even smaller commercially available technological machines, in particular manual machines.

A particularly preferred ratio between the diameter D2 of the second boundary circle and the diameter D1 of the second boundary circle can be between 71% and 77%.

It is proposed that the attachment has an even number of clamps, in particular at least two, four or six clamps. In addition, it is proposed that the attachment has several clamping tabs arranged symmetrically around the axis of rotation of the tool. This makes it possible, among other things, to achieve a particularly effective minimization of tool vibration.

In addition, it is proposed that the carrier flange has a safety device designed in such a way that when the connection between the carrier flange and the working area is broken in the axial direction, which coincides with the axis of rotation of the tool, the working area is held between the carrier flange and the hand machine. This makes it possible to hold the working area between the bearing flange, in particular its fuse, and the holder of the technological machine, especially the hand machine, in case of accidental loss of connection, which ensures effective protection of the operator from the flying away working area of the collapsing working tool, in particular its flying parts.

The fuse can be formed by a section of the carrier flange where the maximum radius of the carrier flange exceeds the minimum radius of the working area, so that the carrier flange forms an overlap with the working area in the radial direction and thus, when the tool is in the attached state, a positive connection is created in the axial direction given by axis of rotation of the tool.

The fuse can be made in the form of a radial support ridge, or a support bead, serving as the boundary of the bearing flange in the direction radial with respect to the axis of rotation of the tool. The fuse, in particular, is made in the form of a section of the bearing flange, overlapping with the working area. The fuse has a connecting area connecting the working area with the bearing flange with positive locking and/or with the formation of a permanent connection. The connecting region extends over a portion of the bearing flange located on the outside in the radial direction. The connecting area is located in the radial direction adjacent to the attachment device, in particular adjoining it, especially its recess. The connecting area is made in the form of a connecting surface, in particular annular, preferably in the form of a circular ring, connecting the working area with the bearing flange.

The carrier flange may be in the form of a support ring with an L-shaped cross-section, so that the connection of the working area with the carrier flange is preferably only on the side of the working tool oriented towards the holder, or on the side of the working tool oriented away from the holder.

The support ring can also have a U-shaped cross-section, in which case it can be composed of upper and lower half rings, preferably interconnected, in particular by pressing together.

In addition, it is proposed that the attachment has at least one mounting coding element belonging to the working tool, which is provided for interacting with at least one coding element present on the holder that ensures correct mounting when the working tool is in the state mounted on the holder. Preferably, the mounting coding element belonging to the working tool is made in the form of a mechanical element, for example, in the form of a recess, an extension protrusion, a groove, a bridge, an extruded relief element and similar means. At the same time, a variant is possible in which the mounting coding element belonging to the working tool is made in electronic form, for example, in the form of an RFID chip, an NFC technology chip (NFC short for "Near Field Communication", communication in the near field), radio wave analyzer, in the form of an electronic reader (barcode reader, data matrix code reader or similar devices), etc., or a variant with a combination where it is a mechatronic element is possible. Preferably, a mounting coding element belonging to the working tool is provided for interaction with at least one coding element of the driver that ensures the correct installation or with at least one coding element of the clamping mechanism that ensures the correct installation according to the principle of matching the key and the keyhole, in particular when finding a working tool in the installed state on the holder. Preferably, the working tool contains several mounting coding elements, in particular at least two, preferably at least three, and most preferably at least four. The number of mounting coding elements belonging to the working tool, which the working tool contains, is preferably equal to the number of coding elements of the holder ensuring correct mounting, being dependent on it. At the same time, a variant is possible, in which the working tool has mounting coding elements belonging to it in a number different from the number of coding elements of the holder ensuring the correct installation, first of all, exceeding it. The at least one mounting coding element belonging to the working tool can preferably be in the form of a relief notch or act, in particular in addition to the mounting coding function, as a trough-shaped strain relief. Preferably, for mounting and/or fastening the working tool on the holder, mechanical and/or electronic evaluation of at least one mounting coding element belonging to the working tool is provided, in particular by means of at least one holder ensuring the correct mounting of the coding element, namely to allow mounting and / or fastening of the working tool on the holder. A variant is possible in which, up to the moment when mounting and/or fastening is enabled, the movement of the clamping mechanism can be blocked, in particular mechanically and/or electronically. A variant is possible, in which at least one mounting coding element belonging to the working tool is provided for actuating at least one holder ensuring the correct mounting of the coding element, first of all, initiating its movement, in particular, to enable mounting and/or fastening of the working tool holder. Alternatively or in addition, a variant is possible, in which the working tool has at least one additional mounting coding element, in particular an extruded relief element, provided for actuating, in particular initiating movement, at least one additional coding element ensuring correct mounting holder, in particular movably mounted, especially on the contact area, to allow the installation and/or fastening of the operating tool on the holder. The advantage achieved with the embodiment according to the invention lies in the possibility to eliminate, to the greatest extent possible, the erroneous mounting of the working tool on the holder. The advantage achieved in this case is to counteract the installation on the holder of working tools unsuitable for the safe operation of the technological machine. The advantage achieved in this case is to counteract, for example, the installation of a working tool intended for use on production machines with lower maximum speeds, on a production machine with a higher maximum speed. This has the advantage of obtaining a high degree of operator safety.

In addition, it is proposed that at least one mounting coding element belonging to the working tool is located on at least one clamping tab of the attachment device. In the design of the mounting coding element, which is located on the clamping foot and belongs to the working tool in the form of a recess, this coding element is preferably arranged in the clamping foot in such a way that its property of resistance to plastic deformation resulting from the operating load is reduced to a maximum up to the limit load of the clamping foot. A variant is possible, in which at least one stiffening element is located on the clamping foot, for example, a stiffening rib or the like. At least one mounting coding element located on the clamping foot belonging to the working tool is preferably provided for interaction with at least one coding element of the clamping mechanism located on the hook jaw ensuring correct mounting when the working tool is in the mounted state on the holder. The advantage of the design according to the invention is that it is possible to obtain secure coding of mounting or fastening according to the key-to-keyhole matching principle.

In addition, it is proposed that at least one mounting coding element belonging to the working tool along the radial axis has a maximum extent corresponding at most to the maximum distance between the first boundary circle and the second boundary circle of the attachment. Preferably, at least one mounting coding element located on the clamping foot belonging to the working tool has a maximum extension along the direction passing transverse to the axis of rotation of the tool, in particular at least essentially perpendicular to it, and this means, in particular, along the radial axis of the working tool. tool equal to or less than the maximum distance between the first boundary circle and the second boundary circle of the working tool. The advantage achieved with the embodiment according to the invention is that reliable and secure coding is obtained.

In addition, it is proposed that at least one mounting coding element belonging to the working tool is located on at least one clamping tab of the attachment in the angular range between the drive edge and the coding edge of the attachment. In particular, the angular range has a maximum span of less than 90°, preferably less than 60°, and particularly preferably less than 40°. The advantage achieved with this design is to obtain a secure coding of the fastener. This has the advantage that it is possible to avoid, to the greatest extent possible, the possibility of fastening the working tool on unsuitable technological machines. The advantage achieved with this design is to protect the operator from injury due to the fastening of the working tool on unsuitable technological machines.

In addition, the invention proposes a working tool intended for use with a technological machine, primarily a manual machine, containing at least one work area designed to act on a workpiece or workpiece structure, and at least one attachment device designed to receive drive efforts, as well as at least one connecting area designed to transfer drive forces to this working area.

In particular, between this attachment and each of these work areas can be located connecting area. Preferably, at least one connecting region, and more preferably all of them, could (s) be located (s) essentially in the region of the second, lower support plane, in particular above it, and preferably essentially coincide with this support plane.

This makes it possible, in particular, to obtain a particularly stable attachment device and thereby achieve a good torque supply to the working tool.

Another object of the invention is the use of a working tool as a working tool of an angle grinder, providing a rotation of the working tool at a speed of more than 4000 rpm, or more than 10,000 rpm, or more than 20,000 rpm.

In the context of the present invention, the serviceability is understood as the possibility of reliable operation, so that the use of a working tool with a technological machine, in particular an angle grinder, corresponds to exactly the same or having at least approximately the same duration of the service life (resource) of the working tool, such as, for example , on the vulcanized fiber backing sanding disc used with the angle grinder. In particular, the term of operation, or resource, is understood as the resource of abrasive agents put into operation by an angle grinder, which is common in the field of grinding equipment.

The object of the invention is also a method for manufacturing the working tool according to the invention, characterized in that the recessed attachment is made by sheet stamping, in particular punching.

Another object of the invention is a processing system comprising a working tool according to the invention and at least one hand-held machine containing at least one holder. At the same time, the working tool has at least one mounting coding element provided for interaction with at least one coding element present on the holder that ensures correct mounting when the working tool is in the state installed on the holder. Preferably, the leash contains at least one coding element ensuring correct mounting, provided for interaction with the mounting coding element present on the working tool when the working tool is in the mounted state on the holder. Preferably, at least one coding element, located on the leash, ensuring correct mounting, is provided for coding the position of the working tool on the holder or fitting on it, in particular, on the contact area. Preferably, at least one coding element located on the leash, ensuring correct installation, is provided for coding the position of the working tool on the holder or sitting on it, in particular on the contact area, according to the principle of matching the key and the keyhole. Preferably, the at least one coding element which is on a driver and ensures correct mounting is in the form of an axial coding element, in particular in the form of an axial coding element acting along a direction extending at least substantially parallel to the axis of the output shaft. Preferably, at least one coding element located on the leash ensuring correct mounting is provided for coding the possibility of axial fitting of the working tool on the leash. Preferably, at least one coding element located on the leash, which ensures correct assembly, is made in one piece with the leash, in particular its leash cheek. At the same time, a variant is possible in which at least one coding element located on the driver ensuring correct installation is made separately from the driver, in particular from the driver cheek, and is attached to the driver, in particular the driver cheek, by means of a connection suitable from the point of view of a person skilled in the art. Preferably, the coding element to ensure correct assembly is in the form of a mechanical element, for example, in the form of a recess, an extension protrusion, a groove, a web, etc. At the same time, a variant is possible in which the coding element ensuring correct installation is made in the form of an electronic element, for example, in the form of an RFID chip, an NFC technology chip, a radio wave analyzer, in the form of an electronic reader (barcode reader, matrix code reader data or similar elements), etc., or a variant is possible where it is a combination of mechanical and electronic elements. Preferably, the mounting coding element belonging to the working tool is made corresponding (complementary) to the coding element located on the leash, which ensures correct mounting. In the case of a design that ensures the correct mounting of the coding element in the form of a mechanical element, the mounting coding element belonging to the working tool is also made in the form of a mechanical element, for example, in the form of a recess, an extension protrusion, a groove, a bridge, etc. In the case of a design that ensures the correct installation of the coding element in the form of an electronic element, the mounting coding element belonging to the working tool is also made in the form of an electronic element, for example, in the form of an RFID chip, an NFC technology chip, a radio wave analyzer, in the form of an electronic reader (bar reader). code, data matrix code reader or the like), etc. Also possible are other appropriate constructions suitable from the point of view of a specialist, which ensure the correct installation of the coding element and the mounting coding element belonging to the working tool. Preferably, the holder comprises a number of coding elements to ensure correct mounting, in particular at least two, preferably at least three, and most preferably at least four. Preferably, there is a relationship between the number of mounting coding elements belonging to the working tool and the number of coding elements of the holder ensuring correct mounting, preferably they are equal. At the same time, a variant is possible in which the working tool has a number of mounting coding elements different from the number of coding elements present on the holder that ensure correct mounting, in particular, exceeds it.

Preferably, the coding element of the leash, which ensures correct mounting, is located on at least one leash cheek of the leash. Preferably, this element is made in the form of an extension protrusion. Preferably, this protrusion-shaped coding element has a main orientation corresponding to a direction away from the axis of the output shaft, in particular along a direction passing transverse to the axis of the output shaft, in particular at least substantially perpendicular to it. At the same time, it is also possible that this mounting coding element located on at least one driver cheek of the driver has another design that is suitable from the point of view of a person skilled in the art. Preferably, this coding element is located on the outer surface of at least one driving cheek, in particular facing away from the axis of the output shaft. Preferably, this mounting coding element located on at least one driver cheek of the driver is located on the outer surface of at least one driver cheek, passing at least essentially parallel to the axis of the output shaft. As an alternative or in addition, a variant is possible, in which the holder comprises at least one coding element, which ensures correct mounting, located on the contact area present on the holder. Such an element can be made mechanical or electronic.

Preferably, the coding element of the driver, which ensures correct mounting, is located adjacent to the inner circumferential surface of at least one driver cheek. Preferably, this coding element, located on at least one cheek of the leash, ensuring the correct installation, is located directly adjacent to the inner circumferential surface. As an alternative or in addition, a variant is possible, in which the coding element ensuring the correct installation, located on at least one cheek of the driver, is located on the outer circumferential surface of at least one driver cheek. It is preferable that the surface of the coding element ensuring the correct installation, located on at least one cheek of the driver, forms part of the inner circumferential surface or the outer circumferential surface of at least one driver cheek.

Preferably, the clamping mechanism, in particular the at least one hook assembly belonging to it, contains at least one coding element that ensures correct assembly. Preferably, the clamping mechanism comprises several such elements, in particular at least two. At the same time, a variant is possible, in which the number of coding elements available for the clamping mechanism, which ensure the correct installation, located on the hook assembly, differs from two. Preferably, the at least one coding element of the clamping mechanism that ensures correct assembly forms a coding fixation element provided for coding the fastening of the operating tool to the holder. Preferably, at least one coding element of the clamping mechanism, which ensures correct mounting, is provided for coding the fastening of the working tool on the holder according to the key-to-keyhole matching principle. Preferably, the at least one coding element of the clamping mechanism that ensures correct mounting is in the form of a radial coding element, primarily acting along a direction extending at least substantially perpendicular to the axis of the output shaft. Preferably, at least one coding element of the clamping mechanism, which ensures correct mounting, is provided for coding a radially acting fastening on the side of the clamping mechanism used to fasten the operating tool to the holder. Preferably, a coding element of the clamping mechanism that ensures correct assembly is provided so that, in the absence of a corresponding mounting coding element on the working tool, at least to the maximum extent possible, the fastening of the working tool on the holder, in particular on the platform, by means of the clamping mechanism, is prevented or blocked. fit. In the presence of a corresponding coding element for correct assembly on the working tool, it is preferable that fastening due to enabling coding is possible due to the interaction of the clamping mechanism that ensures the correct assembly of the coding element with the corresponding (reciprocal) mounting coding element belonging to the working tool. It is possible that the holder has at least a coding element (or several such elements) that ensures correct mounting either only on the leash or only on the clamping mechanism. It is also possible, in which the holder, as an alternative or in addition to one or more coding elements of the leash ensuring the correct installation or one or more coding elements of the clamping mechanism ensuring the correct installation, has other coding elements that make it possible to encode the location of the working tool on the holder. For example, the following options are possible:

1) at least one coding element capable of movement due to the location of the working tool on the holder, to allow the location of the working tool;

2) at least one additional static coding element on the holder, for example, included in the recess on the working tool;

3) at least one additional movable coding element, preferably movable after the correct positioning of a suitable working tool in the coding recess of the working tool, serving to enable, for example, the commissioning of the technological machine;

4) other coding elements suitable from the point of view of a person skilled in the art.

Preferably, the coding element of the clamping mechanism, which ensures correct mounting, is located on the hook cheek, in particular in its clamping cavity. Preferably, at least one of this element is made in one piece with the hook cheek. At the same time, it is also possible that at least one coding element of the clamping mechanism, which ensures correct assembly, is made separately from the hook jaw and is attached to it by means of a connection suitable from the point of view of a person skilled in the art. Preferably, this element is located on the clamping surface of the clamping mechanism, in particular in direct contact with the clamping surface, at least partially delimiting the clamping cavity. Preferably, the at least one coding element of the clamping mechanism, which ensures correct assembly, is in the form of an extension lug. At the same time, it is possible that at least one coding element of the clamping mechanism that ensures correct assembly has a different design suitable from the point of view of a person skilled in the art. At least one coding element of the clamping mechanism that ensures correct assembly can be located on the towing cheek symmetrically or asymmetrically with respect to its central plane, in particular the plane of symmetry. Preferably, the central plane of the towing cheek, in particular the plane of symmetry, substantially parallel to and/or contained the axis of the output shaft. It is also conceivable that at least one coding element of the clamping mechanism, which ensures correct assembly, is located on the hook jaw at some distance from the central plane of the hook jaw, in particular the plane of symmetry.

The advantage achieved with the design according to the invention lies in the possibility to eliminate, to the greatest extent possible, an erroneous mounting of the working tool on the holder. The advantage achieved in this case is to counteract the installation on the holder of working tools unsuitable for the safe operation of the technological machine. The advantage achieved in this case is to counteract, for example, the installation of a working tool intended for use with production machines with lower maximum speeds, on a production machine with a higher maximum speed. The advantage achieved in this way is that it is possible to safely and to the greatest extent possible prevent the mounting of an unsuitable working tool on the holder, in particular mounting on it. At the same time, the possibility of a simple design is provided - coding of the installation. The advantage achieved in this case is the possibility of coding the fastening of the working tool by means of the clamping mechanism. It is possible to block the fixation, for example, in the case of an unsuitable design of the working tool, which does not have an element corresponding to at least one coding element of the clamping mechanism that ensures the correct installation. At the same time, it is possible to reliably counteract the attachment of an unsuitable working tool to the holder. The advantage achieved here lies in the possibility of realizing a compact design. The advantage achieved in this case is that the clamping mechanism ensuring the correct assembly of the coding element can be reliably protected against damage, in particular by arranging at least one coding element ensuring the correct assembly in the clamping cavity of the hook jaw.

The embodiments of the inventive working tool and/or the processing system according to the invention and their applications described above are given only as an example and do not serve to limit the scope of the invention. In particular, the working tool according to the invention and/or the processing system according to the invention for the implementation of the described principle of operation may have a number of individual elements, parts and assemblies different from those indicated in the description. In addition, in the case of the ranges of values specified in the present description, those values that lie within the named boundaries should also be considered covered by the present description and are arbitrarily replaced.

Brief description of the drawings

Other advantages of the invention are revealed in the following description of the variants of its implementation, illustrated by the drawings depicting them. The drawings, description and claims disclose numerous features of the invention used in combination. Based on expediency, the specialist will consider these signs separately, as well as combine them into other rational combinations. The drawings show:

in fig. 1 is a perspective view of the first embodiment of the working tool according to the invention;

in fig. 2 is a perspective view of a second embodiment of the working tool according to the invention;

in fig. 3a - bearing flange of the working tool according to the second embodiment;

in fig. 3b - bearing flange of the working tool according to the third embodiment;

in fig. 4a is an enlarged view of the bearing flange shown in FIG. 3a;

in fig. 4b is an enlarged view of the clamping tab of the bearing flange shown in FIG. 3a;

in fig. 5 is a section A-A of the working tool shown in figure 2;

in fig. 6 is a perspective view of a third embodiment of the working tool according to the invention;

in fig. 7 is an enlarged sectional view of the working tool shown in FIG. 6;

in fig. 8a is a sectional view of the working tool shown in FIG. 6;

in fig. 8b is a cross section of the working tool shown in FIG. 6, with traditional manual machine holder;

FIG. 9 is a sectional view of a processing system including a manual machine and the one shown in FIG. 6 working tool mounted on the holder of the manual machine;

in fig. 10a is a fragmentary view of the holder shown in FIG. 9;

in fig. 10b is a view of a fragment of the first alternative holder;

in fig. 10c is a fragmentary view of the second alternative holder;

in fig. 10d - view of a fragment of the third alternative holder;

in fig. 11 is a perspective view of the holder of the manual machine shown in FIG. 9;

in fig. 12 is a section through the holder along the first orthogonal plane shown in FIG. 9;

in fig. 13 is a detailed view of the hook jaw of the holder shown in FIG. 9, with the coding element of the clamping mechanism of the holder located on it to ensure correct installation;

in fig. 14a - made in tabular form a list of possible locations and designs belonging to the working tool mounting coding elements;

in fig. 14b-14e - other possible designs of the bearing flange of the working tool;

in fig. 15a - design of the working tool and/or holder with at least one spring-loaded safety and/or positioning element;

in fig. 15b shows the design of the working tool and/or holder with at least one spring-loaded safety and/or positioning element, alternative to that shown in FIG. 15a;

in fig. 16a is a top view of a working tool with a design in the form of a drill bit;

in fig. 16b is a sectional view of the working tool shown in FIG. 16a;

in fig. 17a is a plan view of a working tool made in the form of a drill bit, in a design alternative to that shown in FIG. 15a and 15b;

in fig. 17b is a sectional view of the working tool shown in FIG. 17a;

in fig. 18a is a plan view of a working tool in the form of a wire brush in an alternative design to that shown in FIG. 15a and 15b; and

in fig. 18b is a sectional view of the working tool shown in FIG. 18a.

Implementation of the invention

In the drawings, like components are identified by like reference numbers.

Each of the drawings in Fig. 1-8b relate to a working tool (organ) 11 for processing, primarily grinding and/or cutting, one or more workpieces containing at least, for example, wood, metal, plastic, stone, or combinations of these materials.

In FIG. 1 shows a first embodiment of the working tool 11 according to the invention in a flat and at least substantially disc-shaped design. The working tool 11 has, first of all, an imaginary axis a of rotation and an attachment 13, which serves to connect the working tool 11 to the holder 213 for clamping the working tool (see Fig. 9-13) belonging to the manual machine 211, and the working area 15.

The tool rotation axis a defines the center and/or axis of the working tool 11 around which it is rotated by the machine 211 during operation. Attachment 13 is located in the radially inner region of the working tool 11 around the axis a of rotation of the tool.

The attachment 13 has a recess 17 forming a through opening in the material through the working tool 11 and extending in the axial direction given by the tool rotation axis a through the entire thickness t of the material of the attachment 13. The recess 17 may be provided to completely enclose the driver 215 and the clamping mechanism. 217 of the holder 213, in particular to surround them along the circumferential direction of the holder 213 (see Fig. 9). The recess 17 completely surrounds the tool rotation axis a in at least one plane, for example an orthogonal plane extending orthogonally to the tool rotation axis a.

The attachment 13 is adapted to be attached to the holder 213 so that the axis A of the output shaft (spindle) of the manual machine 211 and the axis a of rotation of the working tool 11 substantially coincide.

The attachment device 13 has at least one clamping tab 19. In the preferred embodiment, the attachment device 13 has four clamping tabs 19 extending in a radial direction relative to the axis a of rotation of the tool and at least in some areas limiting the recess 17 of the attachment device 13 in the radial direction. Each of the clamping tabs 19 is limited, in particular in a substantially radial direction with respect to the axis of rotation of the tool, by a first boundary edge 21 located on a first, in particular minimal, boundary circle 23 passing around the axis of rotation a of the tool.

Each of the clamping tabs 19, in particular in a direction substantially radial with respect to the axis of rotation of the tool, is limited by a second boundary edge 25 located on a second, in particular maximum, boundary circle 27 around the axis of rotation of the tool. In particular, the diameter D1 of the first boundary circle 23 is smaller than the diameter D2 of the second boundary circle 27. Preferably, the first boundary edges 21 and the second boundary edges 25 of the clamping tabs 19 at least in some areas limit the recess 17 radially with respect to the axis a of rotation of the tool direction. The first boundary circle 23 and the second boundary circle 27 are arranged concentrically to each other about the rotation axis a of the tool. The first diameter D1 of the first boundary circle 23 has a value of about 22 mm, whereby the working tool 11 is also suitable for conventional hand-held machines, in particular angle grinders, so that backward compatibility (also known as "top-down" or "forward compatibility" is guaranteed). , that is, the ability of the device to work together with equipment of previous versions or generations). As an alternative, the first diameter D1 of the first boundary circle 23 can differ from 22 mm, in particular be smaller, so that the working tool 11 is also suitable for smaller traditional hand-held machines, in particular angle grinders.

The second boundary edge 25 can be configured to center and support the working tool 11 in the radial direction.

The first boundary edge 21 can be bent around the tool rotation axis a in accordance with the stroke of the boundary circle arc 23. The second boundary edge 25 may be bent around the tool rotation axis a in accordance with the stroke of the boundary circle arc 27.

The attachment 13 has a torque receiving area 40 . The torque receiving region 40 has a drive edge 40a, in particular straight or curved, and/or a drive surface 40b, in particular flat or curved. This makes it possible to contact the torque receiving area 40 on the tool 11 with the torque transmission area 219 on the holder 213, in particular in the form of a point contact, preferably in the form of a linear contact, even more preferably in the form of a surface contact. The torque receiving area 40 is located at some distance from the rotation axis a of the tool.

A torque receiving area 40 belonging to the attachment 13 is provided for transmitting driving forces from the manufacturing machine 211 to the working tool 11. The torque receiving area 40 in the axial direction along the axis of rotation of the tool a is located between both ends of the recess 17 of the working tool 11 passing through the entire thickness t material of the working tool 11. The recess 17 has at least four areas 40 of the perception of torque, located with mutual rotational symmetry around the axis a of rotation of the tool.

The drive surface 40b, in particular one section thereof, is provided to form a positive and/or force-locking connection with the holder 213 of the hand machine 211, in particular enabling the working tool 11 to be rotated. In the axial direction along the tool rotation axis a, the drive surface 40b limited by at least the driving edge 40a. At least a portion of the drive surface is made flat. The drive surfaces 40b and the drive edges 40a are inclined at an angle, in particular against the direction of rotation of the holder 213 during operation.

With respect to the plane defined by the directions axial and radial with respect to the tool rotation axis a, the drive surfaces 40b and the drive edges 40a are inclined in the circumferential direction about the axis a by up to 30°, in particular up to 25°, as seen in FIG. 3a.

The first boundary edge 21 is delimited in the circumferential direction around the tool rotation axis a by a coding edge 35, in particular by a section thereof, and by a drive edge 40a, in particular by a section thereof, as in the example shown in FIG. 4a. At least a portion of the driving edge 40a is made straight. At least a portion of the coding edge 35 is straight. At least the coding edge 35 is substantially curved.

The coding edge 35 connects the first boundary edge 21 to the second boundary edge 25. The driving edge 40a connects the first boundary edge 21 to the adjacent second boundary edge 25. The coding edge 35 and the driving edge 40a extend in a substantially radial direction.

The first boundary circle 23 has at least one fictitious projected edge 22, located between the first two boundary edges 21, adjacent in the circumferential direction, lying on the first boundary circle 23 and passing in the circumferential direction around the tool rotation axis a concentric with the first boundary circle 23. At the same time, the length in the circumferential direction of at least one first boundary edge 21, located on the first boundary circle 23, is up to 10% greater than the length of the adjacent fictitious projected edge 22, located on the first boundary circle 23. Preferably, one, in particular each , the projected edge 22 was smaller than the first boundary edge 21 adjacent to it. This makes it possible to achieve particularly advantageous centering of the working tool 11, in particular pre-centering or coarse centering.

Each of the clamping tabs 19 can be limited, in particular in a direction substantially radial with respect to the axis of rotation of the tool, by means of a second boundary edge 25 corresponding to it, located on a second, in particular maximum, boundary circle 27 around the axis of rotation of the tool.

The boundary edges 21, 25, the coding edges 35 and the driving edges 40a form the boundary contour of the recess 17. In particular, the first boundary edge 21, the coding edge 35 and the driving edge 40a form the contour of the clamping foot 19. The driving edge 40a and the coding edge 35 define the first boundary edge 21 in the circumferential direction around the axis a of rotation of the tool and adjoin this boundary edge 21.

With respect to the plane defined by the directions axial and radial to the tool rotation axis a, the drive edge 40a and/or drive surface 40b is inclined(s) in the circumferential direction around the tool rotation axis a by an angle a of up to 30°, for example, about 25°.

The drive surfaces 40b and the drive edges 40a are inclined at an angle, in particular against the direction of rotation of the holder 213 during operation.

With respect to the plane defined by the axial and radial directions with respect to the tool rotation axis a, the drive surface 40b and the drive edges 40a are inclined in the circumferential direction about the tool rotation axis a by an angle a of up to 30°, for example, about 25°, as can be seen in fig. 3a.

The coding edge 35 is arranged substantially parallel to a direction radial to the tool rotation axis a, forming a radial axis r, at a distance of up to 8 mm, in particular up to 6 mm, for example 4.85 mm. In the circumferential direction about the axis of rotation of the tool a, the encoding edge 35 is angled to the drive edge 40a and in particular is preferably inclined up to 40° against the direction of rotation of the holder 213 during operation of the manufacturing machine 211. In particular, at the clamping tab adjacent in the circumferential direction to the coding edge, the extension of the coding edge 35, in particular of its section, and the extension of the drive edge 40a, in particular of its section, extend on the same side of the axis of rotation of the tool, so that the axis of rotation of the tool does not cut through the extension coding edge 35 and an extension of the drive edge 40a.

The clamping feet 19 are arranged symmetrically in the circumferential direction about the axis a of rotation of the tool. In the circumferential direction around the tool rotation axis a, the clamping tabs 19 are offset by 90° relative to each other, as a result of which, with a full 360° rotation of the working tool 11 around the tool rotation axis a, four circumferential positions are obtained. Alternatively, the clamping tabs 19 in the circumferential direction about the tool rotation axis a can be positioned 180° or 60° apart from each other, so that when the working tool 11 rotates completely through 360° about the tool rotation axis a, two or six district provisions.

The clamping tabs 19 extend at least substantially along an orthogonal plane extending in a direction radial to the axis a of rotation of the tool. In particular, this orthogonal plane extends substantially at right angles to the axis of rotation a of the tool.

The first side surface 45 of the working tool 11 has, in particular, a first region 46 located radially inwardly, provided to form a contact area for application to the holder 213 of the manufacturing machine 211, which minimizes stresses in the material of the working tool 11 in the axial direction.

The working area 15 is made disc-shaped and flat, being outside in the radial direction and limiting the radial extent of the working tool 11. The working area 15 has several cutting segments 31, provided for cutting or butchering the workpiece. The working area 15 has a plurality of breaks 33 in the material extending radially to the axis of rotation of the tool, which are provided for separating the cutting segments 31 in the circumferential direction around the axis of rotation of the tool a, at least in separate areas. Preferably, the cutting segments 31 have several cutting elements made in the form of abrasive bodies located, for example, at the end of the working tool 11 and forming a limitation of the working tool 11, or, for example, a sharp point forming a cutting edge, not shown in more detail in the drawings. With its apex, this sharpening can be turned in a radial direction with respect to the axis a of rotation of the tool and serve as the boundary of the maximum radial extent of the working tool 11.

In an alternative embodiment, the working tool 11 may be in the form of a grinding disc for grinding the workpiece, in which case the working area 15 may have several grinding elements, such as abrasive grains, for processing the workpieces. In another alternative embodiment, the working tool 11 can be made in the form of a saw blade for processing workpieces by division into parts, and then the working area 15 can have several cutting teeth, not shown in detail in the drawings, protruding in a radial direction with respect to the axis of rotation of the tool. and employees for cutting, respectively, cutting blanks.

In this case, the specialist knows several designs of the working area 15, which can be used with the proposed invention, the attachment 13 of the working tool 11, so here a detailed discussion of all possible designs of the working area 15 is not given.

In FIG. 2-8 show other embodiments of the working tool 11 according to the invention. In this case, the attachment 13 is made in the form of a bearing flange 14 connected to the working area 15 with positive locking and / or with the formation of a permanent connection. The working area 15 surrounds the carrier flange 14 in a plane for 360° and has a radius extending from the axis a of rotation of the tool, in particular the minimum, less than the radius of the carrier flange 14, in particular the maximum. The bearing flange 14 is connected to the working area 15 with an overlap, as shown in FIG. 5 in cross section A-A taken through the working tool along the secant plane indicated in FIG.

Presented in Fig.2-5 bearing flange 14 is made disc-shaped and flat. It has a first reference plane 52 and a second reference plane 54 located at some distance from it. The reference planes 52, 54 are located orthogonally to the axis a of rotation of the tool, forming the thickness t of the material of the attachment 13.

The first reference plane 52 defines the bearing flange 14 in the direction of the rotation axis a of the tool on the side oriented towards the manual machine 211, in particular when viewed with the working tool 11 in the state when it is mounted on the manual machine 211. The second reference plane 54 defines the working the tool 11 on the opposite side of the manual machine 211, in particular, when viewed when the working tool 11 is in the state when it is installed on the manual machine 211.

The carrier flange 14 has a first attachment surface 49 facing the machine tool 211 when the tool is in the attached state when connected to the hand machine 211. The carrier flange 14 has a first bearing surface 51 facing the machine 211 when the tool is in the attached state, when connected to a handheld machine 211. The carrier flange 14 has a second bearing surface 53 opposite the first bearing surface 51. The first bearing surface 51 and the second bearing surface 53 define the carrier flange 14 in the axial direction along the tool rotation axis a. In the considered embodiment, the first support surface 51 is made in the form of a section of the first attachment surface 49, since the first attachment surface 49 merges into the first support surface 51.

The first bearing plane 52 extends along the first bearing surface 51, or, equivalently, the attachment surface 49. The second bearing plane 54 extends along the second bearing surface 53. The axial torque region 40 extends between these two bearing surfaces 51, 53 .

The carrier flange 14 is connected to the working area 15 with overlap, as a result of which the first bearing surface 51 of the carrier flange 14 is connected to the second side surface 47 of the working area 15 with positive locking and / or with the formation of a permanent connection, forming a connecting area 55 in the form of a round ring. The second side surface 47 preferably has a radially inner portion 48 provided for connection with the radially outer portion of the first bearing surface 51, primarily in a permanent connection and/or form-fitting.

It is possible to connect the bearing flange 14 with the working area 15 with positive locking. It is possible to use a riveted connection or a connection of another type, for example, a plug-in connection, which, for example, can be formed by sticking into the working area 15 the protrusions in the material belonging to the carrier flange 14, extending in the axial direction along the axis of rotation a of the tool, not shown in detail in the drawings. , which may occur, for example, as a result of a partial volumetric deformation of the carrier flange 14 in the axial direction specified by the axis a of rotation of the tool. These protrusions are designed to be inserted into the working area 15. Such a connection serves to transfer the rotational force due to positive locking from the bearing flange 14 to the working area 15.

The carrier flange 14 can have a fuse 63 in the form of a support ridge, or it can be made in the form of such a fuse 63, so that when the tool is attached to the hand machine 211, the fuse 63 is located in such a way that, in the event of a break, or unintentional disengagement of the connection between the bearing flange 14 and the working area 15 ensure the fixation of the working area 15 by means of the bearing flange 14 and the manual machine 211. This is achieved due to the fact that the bearing flange 14, in particular its fuse 63, prevents movement of the working area 15 in the axial direction along the axis a of rotation of the tool. In the event of an unintentional breakdown of the connection, the work area 15 can preferably be held between the carrier flange 14, in particular its fuse 63, and the holder 213, which provides effective protection of the operator from the work area 15 flying apart.

By design, the fuse 63 is preferably formed in such a way that the maximum radius of the bearing flange 14 exceeds the minimum radius of the work area 15, so that the bearing flange 14 overlaps with the work area 15, with the formation of an overlap between them and thus when the tool is in a state where it is clamped by the holder 213 of the manual machine 211, a form-fitting connection of the working area 15 is created in the axial direction specified by the axis a of rotation of the tool.

In FIG. 3b shows an embodiment of the working tool 11 according to the invention with at least one mounting coding element 304, 306, 312, 314 belonging to the working tool, provided for interaction with at least one coding element ensuring correct mounting 300, 302, 308, 310, belonging to the holder 213, when the working tool 11 is installed on the holder 213. At least one mounting coding element belonging to the working tool 304, 306, 312, 314 is located on at least one clamping tab 19 of the attachment 13. Along the radial axis r, at least one mounting coding element belonging to the working tool 304, 306, 312, 314 has a maximum extension at most equal to the maximum distance between the first boundary circle 23 and the second boundary circle 27 of the attachment 13, as can be seen in FIG. 14, which shows various illustrative possible designs of the attachment 13. At least one mounting coding element belonging to the working tool 304, 306, 312, 314 on the clamp foot 19 of the attachment 13 is preferably located in the angular range between the drive edge 40a and the coding edge 35 attachment 13.

Shown in FIG. 3b, the working tool 11, as an alternative to or in addition to at least one mounting coding element 304, 306, 312, 314 belonging to the working tool, contains at least one additional mounting coding element 316, 318, 320, 322 belonging to the working tool, provided for accommodating a safety and/or positioning element 324 (see Figs. 15a and 15b) movably mounted on the holder 213. The movably mounted safety and/or positioning element 324 of the holder 213 can be made in the form of, for example, a spring-loaded locking pin or the like. details. The at least one additional mounting coding element belonging to the working tool 316, 318, 320, 322 is preferably located on the clamping tab 19. Preferably, at least one additional mounting coding element belonging to the working tool 316, 318, 320, 322 is made in the form of an opening not filled with material in the clamping foot 19, in particular in the form of a recess that completely passes through the maximum thickness h of the material of the clamping foot 19. At the same time, it is possible that an additional mounting coding element 316, 318, 320, 322 belonging to the working tool is made on the clamping foot 19 and/or on the carrier flange 14 in the form of a recess, for example, in the form of an indentation produced by the method of relief indentation, as illustrated in Fig.15a and 156. The carrier flange 14 can be made integral with the working area 15 or can be connected to it with positive and/or power locking by means of the supporting flange 14 fi xation element, in particular, made by the method of relief extrusion. Both options are shown for comparison in Fig. 15a and 15b.

The maximum diameter d _w of at least one additional mounting coding element 316, 318, 320, 322 belonging to the working tool preferably corresponds to a value in the range from 0.8 to 1.6 mm. In the radial direction, at least one additional mounting coding element belonging to the working tool 316, 318, 320, 322 is preferably located on the clamping foot 19 in the area between the first boundary circle 23 and the second boundary circle 27. However, it is possible that at least one additional working tool-owned mounting encoding element 316, 318, 320, 322 is located in another area of the working tool 11. Preferably, the working tool 11 contains several additional working tool-owned mounting encoding elements 316, 318, 320, 322, preferably evenly distributed along working tool 11, in particular on its bearing flange 14. In particular, additional mounting coding elements belonging to the working tool 316, 318, 320, 322 are located on a common annular circle 326, the maximum diameter of which has a value in the range from 23 to 28 mm. The common annular circle preferably has a center located on the axis a of rotation of the tool.

In FIG. 6-8 shows a further embodiment of the working tool 11. Here, the bearing flange 14 is axially angulated so that it has a substantially cup-like shape. The bearing flange 14 has an essentially cylindrical side wall 59 extending in the axial direction and delimiting the working area 15 in the direction radial with respect to the axis a of rotation of the tool. The side wall 59 has a substantially rounded cross section. In an alternative embodiment, the side wall 59 may have a cross section with a variable distance from the side wall 59 to the axis of rotation of the tool, projecting in a plane orthogonal to this axis of rotation of the tool. The side wall 59 is essentially concentric with the first boundary circle 23 and the second boundary circle 27. The side wall 59 defines the minimum radius of the work area 15 and causes, in particular, the positive connection of the work area 15 in the radial direction defined by the axis a of rotation of the tool. In addition, thanks to the side wall 59, an axially force-locking connection along the axis a of rotation of the tool can also be created between it and the working area 15. The side wall 59 extends at a distance in the radial direction from the axis a of rotation of the tool. The side wall 59 extends between the first, upper support plane 52 and the second, lower support plane 54. The side wall 59 runs around the axis of rotation of the tool along the entire perimeter, essentially closed in the radial direction.

In this embodiment, there is a certain distance between the first bearing surface 51 and the first attachment surface 49 in the radial and axial directions given by the tool rotation axis a.

The first support plane 52 extends along the first attachment surface 49. The second support plane 54 extends along the second support surface 53.

The region 40 of the perception of torque passes in the axial direction between the first connecting surface 49 of the bearing flange 14 and the second connecting surface 50 opposite to it.

The working area 15 is connected to the carrier flange 14 in such a way that it protrudes above the level of the carrier flange 14 along the axis a of rotation of the tool in the direction facing the holder 213 of the manual machine 211 to a height h of up to 0.6 mm, as also follows, for example, from FIG. 5. In this case, the first side surface 45 has a section forming a contact pad 61 provided for overlapping the holder 213 of the manual machine 211. Preferably, the contact pad 61 of the working area 15 in the axial direction given by the axis of rotation of the tool a, protrudes above the attachment surface 49 in accordance with with height h.

In addition, in FIG. 8a shows a section of the working tool 11, from which it can be seen that it has a support ridge extending from the side wall 59 in the radial direction passing from the axis a of rotation of the tool and made as a fuse 63, provided for connecting the working area 15 with the bearing flange 14 and forming connecting area 55 between the working area 15 and the bearing flange 14.

In FIG. 8b shows an exemplary fit of the working tool 11 in an alternative holder of an alternative manual machine, the output shaft of which is adjacent to the contact pad 61 of the working area 15. Also schematically shown is a clamping nut adjacent to the support ridge 63 of the bearing flange 14 and pressing, or fastening, the working tool 11 in axial direction along the a axis of rotation of the tool.

In FIG. 9 shows a processing system including a holder 213 of the manual machine 211, which is capable of performing rotational movement around the axis A of the output shaft, and a working tool 11. The working tool 11 is seated on the holder 213 so that the axis A of the output shaft and the geometric axis a of rotation of the tool coincide, especially imaginary.

The holder 213 is designed to hold the work tool 11 on the hand machine 211 in such a way that the axis A of the output shaft and the axis of rotation of the tool substantially coincide.

Preferably, holder 213 has at least one driver 215 and a clamping mechanism 217 movable relative to driver 215.

The clamping mechanism 217 has two hook jaws 218a, 218b, made as hooking units 218 and mounted with the possibility of rotation relative to each other about the axis k of rotation of the clamping mechanism 217.

To transfer the driving force to the working tool 11, the driver 215 has four torque transmission areas 219 located at a distance from this axis A of the output shaft, each of which can be made in the form of a transmission surface 219b, in particular its section, or in the form of a transmission edge 219a, in particular its section.

The driver 215 and shown in FIG. 10 and 11, a clamping mechanism 217 is provided for penetrating a recess 17 of the working tool 11 through the entire thickness of the material of the working tool 11 and clamping the working tool 11 with the holder 213 by means of a hook assembly 218 movable relative to the axis A of the output shaft in a substantially radial direction.

Holder 213 has a substantially rectangular opening 225 provided to receive hook assembly 218. Each of these two hook assemblies 218 has at least one clamping surface 233 for transmitting at least axial force to work tool 11.

The driver 215 is formed by two jaws 216a, 216b, in particular serving as guide jaws, provided for guiding the clamping mechanism 217 of the holder 213 in the radial direction, by allowing the clamping device 217 to move in the radial direction defined by the axis A of the output shaft around its axis to rotation and limiting this movement perpendicular to this radial direction. Driver jaws 216a, 216b define hole 225 in a radial direction given by tool rotation axis a along the longitudinal extent of substantially rectangular hole 225.

The driver 215 has a maximum radial extension greater than the maximum radial extension of the clamping mechanism 217 when in the tool-attached state, whereby, when the holder 213 is rotated, the driver jaws 216a, 216b protruding further in the radial direction defined by the axis A of the output shaft guarantee protection. hook cheeks 218a, 218b, because in case of inadvertent contact with the workpiece, the hook assembly 218 is protected by a leash 215.

Shown in FIG. 9, the hook jaws 218a, 218b are in a fictitious state for better illustration, namely, the right hook jaw 218a is in the tool attachment state and the left hook jaw 218b is in the disengaged state. With the manual machine 211 according to the invention, this fictitious state of the hooks 218a, 218b is preferably not achievable since both hooks 218a, 218b are either in the tool attached state or in the tool disengaged state. Preferably, the hook jaws 218a, 218b are mounted in a synchronous manner.

When the clamp mechanism 217 is in the disengaged state, the hook jaws 218a, 218b protrude beyond the level of the driver 215 in the axial direction along the axis A of the output shaft, as can be seen, for example, at the left hook jaw 218b in FIG. 9. From this figure, it can be seen that when the holder 213 is in the disengaged state, the hook jaws 218a, 218b protrude relative to the driver 215 in the axial direction defined by the axis A of the output shaft, further than in the state with the attached tool.

Each of the hook jaws 218a, 218b of the clamp mechanism 217 has at least one circumferential surface 245 defining the maximum radial extent of the hook jaws 218a, 218b. The circumferential surfaces 245 of the hook cheeks 218a, 218b are oriented in opposite directions to each other. Each of the hook cheeks 218a, 218b has a first circumferential surface 245a and a second circumferential surface 245b separated in the axial direction by a clamping cavity 231 of the clamping mechanism 217. The first circumferential surfaces 245a and the second circumferential surfaces 245b define the radial extent of the clamping cavity 231. The first circumferential surface 245a is curved, with a center of curvature at least on axis A of the output shaft.

To improve the clarity of the illustration in Fig. 9, the right hook jaw 218a is shown in a tool-attached state when it holds the work tool 11 in the holder 213. The hook assemblies 218a and 218b are surrounded by abutment area 261.

The torque transmission area 219 of the driver 217 has a transmission surface 219b, in particular a portion thereof, and a transmission edge 219a, in particular a portion thereof. At least a portion of the transmission surface 219b may be flat. At least a portion of the transmission edge 219a may be straight.

The transmission surfaces 219b and the transmission edges 219a are inclined with respect to a plane defined axially and radially with respect to the axis A of the output shaft, and in particular against the direction of rotation of the holder 213 during operation of the manual machine 211, preferably at an angle of up to 30°. In addition, the holder 213 has a flat, circular ring-shaped landing pad 261 provided to provide support in the axial direction for at least the pad 61 of the working tool 11. In the radial direction, the fit pad 261 is some distance from the hook assembly 218 in particular the clamping surface 233 of the clamping mechanism 217.

The working area 15 of the working tool 11 is located on the attachment 13 in such a way that when the tool is in the attached state, the working area 15 protrudes relative to the attachment device 13 along the axis a of rotation of the tool in the direction facing the holder 213 of the manual machine 211. In this case, the contact area 61 working area 15 when the working tool 11 is in the attached state comes into contact with the platform 261 abutment of the manual machine 211 and forms a force-locked connection with the manual machine 211 in the circumferential direction specified by the axis of rotation of the tool.

In the radial direction with respect to the axis a of rotation of the tool in the direction of the pad 261 fits between the first radius and the second radius, the first is less than the second.

When the working tool 11 is attached to the hand machine 211, the clamping foot 19 located on the working tool 11, respectively, its first boundary edge 21, protrudes relative to the first, in particular the minimum, radius of the contact area 261 in a radial direction with respect to the axis A of the output shaft. up to 4 mm, so that there is no contact area 261 in this region, hence no support material, and the clamping tab 19 can be bent in the axial direction.

The holder 213, in particular the towing unit 218, has an actuating device 229, which is provided so that, when axially acting on the actuating device 229, by applying a control force, to ensure the transfer of the towing unit 218 from the disengaged state, in which the working tool 11 can be removed from the holder 213 or put on it, in an attached state in which the working tool 11 is connected to the holder 213.

In addition, the hook assembly 218 has a radial clamping cavity 231 provided for receiving at least one clamping tab 19 and clamping it in the axial direction along the axis A of the output shaft when the tool is in the attached state, and releasing in the disengaged state. The clamping cavity 231 has a clamping surface 233 provided for exerting a clamping action on the working tool 11.

The hooking units 218a and 218b are rotatably mounted about the axis k of rotation of the clamping mechanism, in particular substantially orthogonal to the axis A of the output shaft, in such a way that, depending on the angle of rotation of the hooking unit 218, on which it, in particular its clamping surface 233 , inclined relative to axis A of the output shaft, using the hook assembly 218, it is possible to clamp working tools 11 with different thicknesses of attachment devices 13.

When the work tool 11 is attached to the manual machine 211, the torque transmission regions 219 of the holder 213 are located between the first orthogonal plane 235 and the second orthogonal plane 237 of the holder 213. The holder 213 has two driving jaws 216a, 216b with two regions 219 corresponding to each of them. torque transmission located with mutual rotational symmetry around the axis A of the output shaft.

In the direction along the axis A of the output shaft, the first orthogonal plane 235 is the boundary of the holder 213 on the side facing the manual machine 211, and the second orthogonal plane 237 is the boundary of the holder 213 on the side opposite the manual machine 211.

In the radial direction defined by the axis A of the output shaft, the regions 219 of torque transmission extend at least in separate sections between the first and second radii from the axis A of the output shaft, and at least one of these sections is designed to transmit torque from the manual machine 211 to working tool 11.

Preferably, one of the torque transmission regions 219 present on the manual machine 211, more preferably several of them, and especially preferably all of these regions 219 are in contact with the torque perception regions 40 of the working tool 11 at least in certain areas, and this contact takes the form of a point contact, preferably a linear contact, and particularly preferably a surface contact.

In FIG. 10b, 10c and 10d show alternative designs of the holder 213 of the hand machine 211, which serves to seat working tools having a symmetrical design of the attachment. The holders 213 shown in these drawings are of at least substantially the same construction as the holder 213 illustrated in the previous drawings. The difference shown in Fig. 10b, 10c and 10d of the holders 213 from those previously illustrated consists in having a driver 215 symmetrical about a plane of symmetry extending at least substantially parallel to the axis A of the output shaft. The axis A of the output shaft preferably runs in a plane of symmetry with respect to which the driver 215 is symmetrical.

Shown in FIG. 10b, the driver 215 preferably has driver cheeks 216a, 216b that are mutually symmetrical. In particular, the driving cheeks 216a, 216b are mirror symmetrical with respect to each other, especially with respect to the plane of symmetry containing the axis A of the output shaft. Preferably, each of the driver cheeks 216a, 216b is mirror symmetrical with respect to a plane extending at least substantially perpendicular to the plane of symmetry. Preferably, on each of the driving cheeks 216a, 216b there is at least one input socket for the implementation of the driver 215, in which it is possible to insert and / or in which it is possible to place, in particular, a clamping tab of a working tool having a rectangular cross section, not shown in these drawings. and made corresponding to the holder 213 shown in FIG. 10b. In particular, each of the driver cheeks 216a, 216b has at least one lead-in bevel located on the corresponding driver cheek 216a, 216b, namely on its outer surface at least partially delimiting the lead-in socket.

Shown in FIG. 10b, the driver 215 preferably has driver jaws 216a, 216b that are mutually symmetrical. In particular, the driving cheeks 216a, 216b are mirror symmetrical with respect to each other, primarily with respect to the plane of symmetry containing the axis A of the output shaft. Preferably, each of the driver cheeks 216a, 216b is mirror symmetrical with respect to a plane extending at least substantially perpendicular to the plane of symmetry. Each of the driver jaws 216a, 216b has a rectangular base shape with at least two bevelled edges. On its outer side, connecting these two chamfered edges, each of the driving cheeks 216a, 216b contains a protruding ledge. This protrusion of the corresponding driver cheek 216a, 216b is preferably in the form of a segment of a circle and can form, for example, the coding element shown in FIG. 10b of the holder 213. The inner surface of the clamp mechanism 217 extending at least substantially perpendicular to the clamp surface 233 of the clamp mechanism 217 of the holder 213 shown in FIG. 10c preferably has a projection in the form of a segment of a circle. The protrusion of the clamping mechanism 217 may form, for example, the fastening encoding element of the holder 213 shown in FIG. 10c. The advantage resulting from this solution is that, by means of the clamping mechanism 217 of the holder 213 shown in FIG. 10c, it is preferable to avoid, to the greatest extent possible, the fastening of a working tool (not shown in this drawing) having a recess that does not correspond to the projection of the clamping mechanism 217. Preferably, the projections of the driving jaws 216a, 216b and the projections of the clamping mechanism 217 in a plane extending at least along substantially perpendicular to the axis A of the output shaft, form a circumferential contour of the holder 213, having an axis of symmetry of the fourth order.

Shown in FIG. 10d, the driver 215 preferably has driver lips 216a, 216b that are mutually symmetrical. In particular, the driving cheeks 216a, 216b are mirror symmetrical with respect to each other, primarily with respect to the plane of symmetry containing the axis A of the output shaft. Preferably, each of the driver cheeks 216a, 216b is mirror symmetrical with respect to a plane extending at least substantially perpendicular to the plane of symmetry. Preferably, each driving cheek 216a, 216b has at least two driving and/or coding contours, made by corresponding clamping tabs of the working tool, not shown in this drawing. Preferably, the driver and/or coding contours are made in the form of recesses in the outer contour of the driver 215, in particular in a plane extending at least substantially perpendicular to the axis A of the output shaft. The clamping mechanism 217 of the holder 213 shown in FIG. 10d comprises an inner surface extending at least substantially perpendicular to the clamping surface 233 of the clamping mechanism 217. In a plane extending at least substantially perpendicular to the axis A of the output shaft, this inner surface has a shape similar to one of the driving and/or coding contours. . In a plane at least substantially perpendicular to the axis A of the output shaft, the driving and/or coding contours of the driving cheeks 216a, 216b and the inner surfaces of the clamping mechanism 217 preferably form a circumferential contour of the holder 213 having a sixth order symmetry axis.

In FIG. 13-15 show images of additional details of the processing system, in particular the working tool 11 and the holder 213 of the manual machine 211, while shown in FIG. 13-15 additional details in the previous drawings (FIGS. 1-12) have not been shown for reasons of clarity, to simplify and enhance their readability. Revealed in FIG. 13-15, the features can be transferred by analogy to FIGS. 1-12.

The working tool 11 contains at least one mounting coding element 304, 306, 312, 314 belonging to it, provided for interaction with at least one coding element 300, 302, 308, 310 provided on the holder 213, ensuring the correct installation when the working tool 11 is found in the state installed on the holder (see Fig. 12). At least one mounting coding element 304, 306, 312, 314 belonging to the working tool 11 and at least one coding element 300, 302, 308, 310 of the holder 213 ensuring correct mounting are made, in particular, corresponding (complementary). Preferably, at least one coding element 300, 302, 308, 310 located on the holder 213 ensuring the correct installation is provided for coding the location of the working tool 11 on the holder 213, fixing to it or putting it on it, in particular, its fit platform 261. Preferably, at least one coding element 300, 302, 308, 310 of the holder 213, which ensures correct mounting, is provided for coding the location of the working tool 11 on the holder 213, fixing to it or putting it on, in particular, its seat 261, according to the key matching principle. and keyhole.

The leash 215 includes at least one coding element 300, 302 ensuring the correct installation, provided for interaction with at least one mounting coding element 304, 306 belonging to the working tool 11 when the working tool 11 is in the mounted state on the holder 213. At least one coding element 300, 302 of the leash 215 that ensures the correct installation is located on at least one leash cheek 216a, 216b of the leash 215 (see Fig. 12).

At least one coding element 300, 302 of the leash 215 that ensures correct mounting is designed as a mechanical element. At least one coding element 300, 302 of the driver 215, which ensures correct mounting, is integral with the driver cheek 216a, 216b. At least one coding element 300, 302 of the leash 215, which ensures the correct installation, is made in the form of an extension protrusion. However, it is possible that at least one coding element 300, 302 of the driver 215 that ensures correct installation has another design suitable from the point of view of a specialist, for example, in the form of a recess, a bridge, and other elements. The at least one correct mounting coding element 300, 302 of the driver 215 preferably extends at least along a transverse direction, at least substantially perpendicular to the axis of rotation a of the working tool 11. The at least one correct mounting coding element 300, 302 leash 215 is located adjacent to the inner circumferential surface 240 of at least one leash cheeks 216a, 216b. The at least one coding element 300, 302 of the driver 215, which ensures correct mounting, extends from the inner circumferential surface 240 of the at least one driver web 216a, 216b, in particular in a direction away from the axis of rotation of the tool a, in particular up to a maximum circumferential surface 245, the boundary of which is the outer peripheral circle 245 with (see Fig. 9 and 12).

The at least one correct mounting coding element 300, 302 of the driver 215 is preferably positioned, when viewed in the circumferential direction, between the driving edge 219a and/or the driving surface 219b and the side of the driving cheek 216a, 216b opposite the driving edge 219a and/or the driving surface. 219b. The at least one correct mounting coding element 300, 302 of the driver 215 along the circumferential direction preferably has a maximum extent less than the maximum distance along the circumferential direction between the driving edge 219a and/or the driving surface 219b and the side of the driving cheek 216a, 216b opposite this driving edge. 219a and/or drive surface 219b. Preferably, the at least one correct mounting coding element 300, 302 of the driver 215 is located in an angular range of less than 60° between the driving edge 219a and/or the driving surface 219b and the side of the driving cheek 216a, 216b opposite this driving edge 219a and/or the driving surface 219b.

The at least one coding element 300, 302 of the driver 215 that ensures correct assembly can be of any design suitable from the point of view of a specialist. For example, a variant is possible in which, in particular when viewed in the first orthogonal plane 235, it has a polygonal (square, rectangular, triangular, n-gonal and other geometric shape) or round (in the form of a semicircle, a semicircle with a wavy line of the outer perimeter and etc.) cross-section, as can also be understood from those shown in Figs. 14 illustrative images, since at least one mounting coding element 304, 306, 312, 314 belonging to the working tool 11 is preferably made corresponding to at least one coding element 300, 302, 308, 310 located on the holder 213 ensuring the correct installation. , a variant is possible in which at least one mounting coding element 304, 306, 312, 314 belonging to the working tool 11 and at least one coding element 300, 302, 308, 310 located on the holder 213 ensuring the correct installation are made with difference, in in particular from the point of view of assigning a spatial dimension. For example, it is possible that at least one mounting coding element 304, 306, 312, 314 belonging to the working tool 11 along the circumferential direction or along the radial direction has a maximum extension corresponding to a multiple of the maximum extension of at least one coding element 300 that ensures the correct installation , 302, 308, 310 holder 213, etc.

Preferably, at least one coding element 300, 302 that ensures the correct installation is located on at least each driver cheek 216a, 216b of the driver 215 (see Fig. 12). At the same time, it is possible that more than one coding element 300, 302 ensuring the correct installation on the driver cheek 216a, 216b is provided, for example, at least two, at least three, at least four or more such elements 300, 302 on the driver cheek 216a, 216b. The coding elements 300, 302 located on the cams 216a, 216b, which ensure correct mounting, in particular have a design similar to each other, but it is also possible for them to differ in design.

Preferably, the coding elements 300, 302 of the driver 215, located on the driver cheeks 216a, 216b to ensure correct assembly, are located asymmetrically on the driver cheeks 216a, 216b with respect to the plane containing the axis A of the output shaft. At the same time, it is possible that the coding elements 300, 302 of the driver 215 located on the driver cheeks 216a, 216b, which ensure the correct installation, with respect to the plane containing the axis A of the output shaft, are located on the driver cheeks 216a, 216b symmetrically, as it is, in in particular, can be understood from FIGS. 14 illustrative images showing possible respective arrangements of mounting coding elements belonging to the working tool 304, 306, 312, 314.

The clamping mechanism 217, in particular at least its hook assembly 217a, 217b, comprises at least one coding element 308, 310 to ensure correct mounting (see FIGS. 12 and 13). The fitting coding element 308, 310 of the clamping device 217 is preferably located on the hook jaw 218a, 218b, in particular in the clamping cavity 231 provided by it. two. However, it is possible that the clamping mechanism 217 located on the hook assembly 217a, 217b, which ensures the correct installation of the coding elements 308, 310, has a different number, not one or two. Preferably, at least one correct mounting coding element 308, 310 of the clamp mechanism 217 forms a locking coding element provided for encoding the fastening of the working tool 11 on the holder 213. Preferably, at least one correct mounting coding element 308, 310 of the clamp mechanism 217 is provided for coding fastening of the working tool 11 on the holder 213 according to the principle of matching the key and the keyhole.

Preferably, the at least one coding element 308, 310 of the clamping mechanism 217 that ensures correct assembly is integral with the hook lug 218a, 218b. However, it is possible that at least one of this element 308, 310 of the clamping mechanism 217 is made separately from the hook cheeks 218a, 218b and attached to it using a connection suitable from the point of view of a specialist. Preferably, at least one coding element 308, 310 of the clamping mechanism 217 that ensures the correct mounting is located on the clamping surface 233 of the clamping mechanism 217, in particular in direct contact with this clamping surface 233, at least partially delimiting the clamping cavity 231. At least one providing correct assembly, the coding element 308, 310 of the clamping mechanism 217 has, in particular, a maximum extension within the clamping cavity 231 that is less than the maximum extension of the clamping surface 233 of the clamping mechanism 217. extension form. However, it is possible that at least one of this element 308, 310 of the clamping mechanism 217 has another design suitable from the point of view of a specialist, for example, in the form of a recess, a groove, a web, a gear contour, or similar configurations. At least one coding element 308, 310 of the clamping mechanism 217 that ensures the correct installation can be located on the hook cheek 218a, 218b symmetrically or asymmetrically with respect to its central plane, in particular the plane of symmetry, as this, in particular, can be understood from the figures shown in fig. 14a-14e of exemplary views showing possible respective arrangements of mounting coding elements 304, 306, 312, 314 belonging to the working tool. and/or contains it. It is also possible that at least one coding element 308, 310 of the clamping mechanism 217, which ensures the correct installation, is located on the hook cheek 218a, 218b with some distance from the central plane of the hook cheek 218a, 218b, in particular the plane of symmetry.

Attachment 13 of the working tool 11 has at least one mounting coding element 304, 306, 312, 314 belonging to the working tool, provided for interaction with at least one coding element 300, 302, 308, 310 present on the holder 213, ensuring the correct installation when finding the working tool 11 mounted on the holder 213 state. At least one mounting coding element belonging to the working tool 304, 306, 312, 314 is located on at least one clamping tab 19 of the attachment 13 (see Fig. 14a). Along the radial axis r, at least one mounting coding element 304, 306, 312, 314 belonging to the working tool has a maximum extension, at most equal to the maximum distance between the first boundary circle 23 and the second boundary circle 27 of the attachment 13, as can be seen from shown in fig. 14a as an example of possible designs of the attachment 13. At least one mounting coding element 304, 306, 312, 314 belonging to the working tool is preferably located on the clamping tab 19 of the attachment 13 in the angular range between the drive edge 40a and the coding edge 35 of the attachment 13. In particular, the maximum extent of this angular range is less than 90°, preferably less than 60°, and particularly preferably less than 40°. Along the circumferential direction, at least one mounting coding element belonging to the working tool 304, 306, 312, 314 has a maximum extension, preferably less than the maximum distance between the driving edge 40a and the coding edge 35 of the attachment 13. In particular, at least one belonging to the working tool the mounting coding element 304, 306, 312, 314 extends along the circumferential direction in the area between the drive edge 40a and the coding edge 35, and this area is preferably located within the limits separated by the first boundary circle 23 and the second boundary circle 27 of the attachment 13. Preferably, this area formed by a fragment of a circular ring bounded by the first boundary circle 23 and the second boundary circle 27 of the attachment 13, as can be seen from those shown in FIG. 14a as an example of the various possible designs summarized in a tabular list, it is also absolutely possible to combine the illustrated possible designs. The attachment device 13 preferably comprises several mounting encoders 304, 306, 312, 314 belonging to the working tool, which can be arranged on the attachment device 13, in particular on the clamping tabs 19, symmetrically, in particular according to rotational symmetry of the nth order, or asymmetrically.

In the first column shown in Fig. 14a of the tabular list of illustrative possible designs of the attachment device 13, in particular, from the point of view of the possible embodiments of the mounting coding elements belonging to the working tool 304, 306, 312, 314, the possible embodiments of the mounting coding elements belonging to the working tool 304, 306, 312 are shown, 314 in terms of dimensions, in particular length, width, etc. The second column of this table shows the possible embodiments of the mounting coding elements 304, 306, 312, 314 belonging to the working tool in terms of shape, for example, polygon shape, round shape, etc. are shown. The third column of this table shows the possible embodiments of the mounting coding elements 304, 306, 312, 314 belonging to the working tool in relation to the location relative to the radial axis r or the plane containing the axis a of rotation of the tool, for example, a symmetrical arrangement with respect to radial axis r, one-sided arrangement relative to the radial axis r, rotational symmetry of the nth order, etc. In FIG. 14a, position numbers are affixed to only one of the possible embodiments, in order to improve the readability of this tabular list. Shown in figa possible options for the execution of the attachment 13, in particular, in relation to possible options for the assembly coding elements 304, 306, 312, 314 belonging to the working tool, in the context of this description should not be considered as a limitation, since these elements 304, 306, 312, 314 may have other possible designs suitable from the point of view of a specialist.

In FIG. 14b-14e show alternative designs of the attachment 13, in particular with regard to the possible embodiments of the clamping tabs 19. Shown in FIG. 14b, the attachment 13 preferably has a first boundary circle 23 at least partially delimiting the clamping tab 19 of the attachment 13, having a maximum diameter D1 greater than the maximum diameter of the circle delimiting the coding elements 300, 302, 308, 310 of the holder 213, ensuring correct mounting, in in particular in the direction of the radial axis r. The clamping foot 19 is preferably designed in such a way that, when the working tool 11 is in the position of the holder 213, it extends inside the clamping cavity 231 of the clamping mechanism 217 and can be attached to the holder 213, in particular by means of a clamping surface 233. In particular, the clamping foot 19 is designed in such a way that its edge, limiting the clamping foot 19 along the radial axis r and located preferably at least partially on the first boundary circle 23, when the working tool 11 is in the holder atele 213 state is located, barely touching the holder 213, which ensures the correct installation of the coding element 300, 302, 308, 310, or at some distance from it. Preferably, the maximum diameter D1 of the first boundary circle 23 is less than the maximum diameter D2 of the second boundary circle 27 of the attachment 13. Preferably, the maximum diameter D1 of the first boundary circle 23 is greater than or equal to the maximum diameter of the circle serving as the boundary of the coding elements 300, 302, 308, 310 of the holder ensuring correct mounting 213, in particular greater than or equal to 24.8 mm. With respect to the plane of symmetry containing the axis a of rotation of the tool, the clamping foot 19 can be made mirror-symmetrical (see the image on the right in Fig. 14b) or asymmetrical (see the image on the left in Fig. 14b).

Shown in FIG. 14c, the attachment 13 preferably has at least one clamping tab 19, in particular at least four clamping tabs 19, having(s) a maximum extent along the first boundary circle 23 and/or the second boundary circle 27, less than the maximum the length of the recess of the working tool 11 interacting with at least one driving cheek 216a, 216b and/or at least partially accommodating it when the working tool 11 is in the mounted state on the holder 213. Preferably, along the first boundary circle 23 and/or the second boundary circle 27, the clamping tab 19 has a maximum extension less than the minimum distance between the transmission edge 219a of the torque transmission area 219 and the coding element 300, 302, 308, 310 of the holder 213, which ensures correct mounting. in fig. 14, the example illustrates four possible designs of the clamping foot 19 with a small maximum extension.

Shown in FIG. 14d, the attachment 13 preferably has at least one clamping tab 19, in particular at least four clamping tabs 19, on which at least one mounting coding element 304, 306, 312, 314 belonging to the working tool 11 is located. In the image on the left in Fig. 14d located on the clamping foot 19 belonging to the working tool mounting coding element 304, 306, 312, 314 has a maximum radial extent less than or equal to the maximum radial distance between the first boundary circle 23 and the second boundary circle 27.

In the central image in Fig. 14d, the mounting coding element 304, 306, 312, 314 located on the clamping foot 19, which belongs to the working tool, has a maximum circumferential extent, which is in the angular range with a range of values from 10 to 40°.

In the image on the right in Fig. 14g located on the clamping foot 19, the mounting coding element 304, 306, 312, 314 belonging to the working tool has a maximum circumferential extent not exceeding 17 mm and preferably located within the angular sector with a range of values from 10 to 40 °, while it is located between at least two recesses of the working tool 11, interacting with the driving cheek 216a, 216b and/or at least partially accommodating it.

Shown in FIG. 14d, the attachment device 13 preferably has at least one clamping tab 19, in particular at least four clamping tabs 19, on which at least one mounting coding element 304, 306, 312, 314 belonging to the working tool 11 is located. In the image on the left in Fig. 14d, the clamping foot(s) 19 are mirror symmetrical with respect to the plane of symmetry containing the axis a of rotation of the tool. The mounting coding elements 304, 306, 312, 314 belonging to the working tool preferably adjoin on both sides an edge that serves as the boundary of the clamping tab 19 and preferably extends at least partially along the first boundary circle 23.

In the central image in Fig. 14e, the clamp(s) foot(s) 19 are made asymmetrical with respect to the plane of symmetry containing the axis a of rotation of the tool. The mounting encoders 304, 306, 312, 314 belonging to the working tool on one side, in particular on the side facing the driving edge 40a, preferably at least adjoin the edge that serves as the boundary of the clamping tab 19, preferably extending at least partially along of the first boundary circle 23. On the side of the mounting coding element 304, 306, 312, 314 belonging to the working tool, facing the coding edge 35, these elements 304, 306, 312, 314 preferably adjoin at least another edge serving as the border of the clamping foot 19, located with an offset relative to the first boundary circle 23 in the direction of the second boundary circle 27.

In the image on the right in Fig. 14e, the clamp(s) foot(s) 19 are made asymmetrical with respect to the plane of symmetry containing the axis a of rotation of the tool. The mounting encoders 304, 306, 312, 314 belonging to the working tool on one of their sides, in particular on the side facing the encoding edge 35, preferably at least adjoin the edge that serves as the boundary of the clamping tab 19, preferably extending at least partially along the first boundary circle 23. On the side of the mounting coding element 304, 306, 312, 314 belonging to the working tool, facing the driving edge 40a, these elements 304, 306, 312, 314 preferably adjoin at least another edge serving as the boundary of the clamping foot 19 and offset from the first boundary circle 23 in the direction of the second boundary circle 27.

In FIG. 16a, 16b, 17a, 17b, 18a and 18b show possible embodiments of the working tool 11. FIG. 16a and 16b show a possible design of the working tool 11 in the form of a drill bit. The working tool 11 comprises an attachment 13 and a working area 15 adjacent to the attachment 13. The working area 15 is made cylindrical, in particular in the form of a round cylinder. Preferably, the working area 15 has at least a substantially constant maximum diameter, in particular when viewed along the axis a of rotation of the tool. Preferably, the work area 15 along the tool rotation axis a has a constant maximum distance from the tool rotation axis a. On its side opposite the attachment 13, the work area 15 comprises at least one cutting segment 31 or several cutting segments 31. The cutting segment(s) 31 are preferably made in the form of diamond segments. However, it is possible that this segment (or segments) 31 has(-s) another design suitable from the point of view of a specialist, for example, are carbide or made of similar materials.

In FIG. 17a and 17b show a possible embodiment of the working tool 11 in the form of a drill bit. Shown in FIG. 17a and 17b, the working tool 11 has a design at least substantially similar to that shown in FIG. 16a and 16b. Unlike shown in FIG. 16a and 16b of the working tool 11 illustrated in FIG. 17a and 17b, the working tool 11 has a working area 15 which, in particular when viewed along the axis of rotation a of the tool, has at least two different maximum diameters. Preferably, the working area 15 in the area associated with the cutting segment 31 has a smaller maximum diameter than in the area associated with the attachment 13. The change in diameter or the change in diameter can be performed abruptly or continuously. Preferably, the cutting segment 31 is in the form of a layered coating containing abrasive particles, in particular diamond particles, corundum particles and the like. However, it is possible that the cutting segment 31 is made of carbide or similar materials.

In FIG. 18a and 18b show a possible embodiment of the working tool 11 in the form of a cup brush. The working tool 11 preferably includes an attachment 13 and a working area 15 located on it. The working area 15 is cup-shaped. The working area 15 preferably includes a fixation area, on which the bristle-like elements for working the workpiece belonging to the working tool 11 are attached. .P. Elements for processing the workpiece can be made crimped or non-crimped. Elements for processing the workpiece are attached to the fixation area, preferably by means of a force-locked connection, with positive locking and/or with the formation of a permanent connection.

Claims (15)

1. A working tool, primarily for processing a workpiece, designed to be mounted on a manual machine (211) configured to actuate this working tool (11) by rotating around the axis (A) of the output shaft, which is part of the holder (213), containing at least one attachment (13), made with the possibility of detachable connection with the output shaft of the manual machine (211), attached to the holder (213) in such a way that the axis (A) of the output shaft and the axis (a) of rotation of the working tool ( 11) essentially coincide, and having a recess (17), characterized in that: the attachment (13) has at least one clamping tab (19) at least partially limiting the recess (17) in the radial direction extending from the axis (a) tool rotation, the clamping foot (19) in a direction essentially radial with respect to the tool rotation axis (a) is limited by the first boundary edge (21) located on the first, in In particular, the minimum, boundary circle (23) passing around the axis (a) of rotation of the tool, the clamping tab (19) extends at least essentially along a plane orthogonal to the axis (a) of rotation of the tool, the clamping tab (19) is made in the form of an elastic tabs and is provided for connecting the working tool (11) with the holder (213) in such a way that the working tool (11) at least partially perceives loads acting in the axial direction coinciding with the axis (a) of rotation of the tool, due to elastic deformation or elastic bending. 2. Working tool according to claim 1, characterized in that the clamping foot (19) is asymmetric with respect to any symmetry plane given by the radial and axial directions determined by the axis (a) of rotation of the tool, in particular, does not have mirror symmetry. 3. Working tool according to one of the previous paragraphs, characterized in that the first boundary circle (23) has at least one fictitious projected edge (22) lying on it, located between two adjacent first boundary edges (21) and passing in the circumferential direction about the axis (a) of rotation of the tool is concentric with the boundary circle (23), while the extent in the circumferential direction of at least one, in particular each, projected edge (22) is less than the extent of the first boundary edge (21) adjacent to it. 4. Working tool according to one of the preceding claims, characterized in that at least one clamping tab (19) has a torque receiving area (40), in particular a drive edge (40a) and/or a drive surface (40b) intended for perception of torque in the circumferential direction around the axis (a) of rotation of the tool, while the region (40) of perception of torque is formed at least in separate areas due to the axial and/or radial extension of the clamping foot (19). 5. A working tool according to claim 4, characterized in that the torque receiving area (40), in particular the drive edge (40a) and/or drive surface (40b), is inclined at some angle against the direction of rotation of the holder (213) during operation of the manual machine (211), and/or the area (40) of torque perception, in particular the drive edge (40a) and/or the drive surface (40b), is inclined in the circumferential direction around the axis (a) of rotation of the tool relative to the plane specified by the axial and radial with respect to the axis (a) of rotation of the tool directions, in particular inclined at an angle of up to 50°, preferably up to 40°, even more preferably up to 30°, and particularly preferably up to 25°. 6. The working tool according to one of the preceding paragraphs, characterized in that the clamping foot (19) is essentially in the radial direction with respect to the axis (a) of rotation of the tool is limited by the second boundary edge (25) located on the second, in particular the maximum, boundary circle (27) circumscribed around the axis (a) of rotation of the tool. 7. Working tool according to one of the previous paragraphs, characterized in that the attachment (13) has at least one mounting coding element (304, 306, 312, 314) belonging to the working tool, provided for interaction with the holder (213) at least one coding element (300, 302, 308, 310) ensuring the correct installation when the working tool (11) is in the state installed on the holder (213). 8. Working tool according to claim 7, characterized in that at least one mounting coding element belonging to the working tool (304, 306, 312, 314) is located on at least one clamping tab (19) of the attachment device (13) and/ or is made in the form of a recess, completely passing through the maximum thickness of the material of the clamping foot (19). 9. Working tool according to claim 7 or 8, characterized in that at least one mounting coding element belonging to the working tool (304, 306, 312, 314) has a maximum length along the radial axis (r), at most corresponding to the maximum distance between the first boundary circle (23) and the second boundary circle (27) of the attachment device (13), or the mounting coding element (304, 306, 312, 314) located on the clamping foot (19) has a maximum radial extent that is less than the maximum radial distance between the first the boundary circle (23) and the second boundary circle (27). 10. Working tool according to one of paragraphs. 7-9, characterized in that at least one mounting coding element belonging to the working tool (304, 306, 312, 314) is located on at least one clamping tab (19) of the attachment (13) in the angular range between the drive edge ( 40a) and the coding edge (35) of the attachment (13). 11. A working tool according to one of the previous paragraphs, characterized in that the attachment (13) is formed by a bearing flange (14), in particular disc-shaped or cranked, and the attachment (13) has a recess (17) made by sheet stamping. 12. Working tool according to one of the previous paragraphs, characterized in that the recess (17) is made in the form of a through opening in the material, passing through the entire thickness of the material of the working tool (11) and provided for complete coverage of the output shaft, in particular the holder (213) , preferably the driver (215) and clamping mechanism (217) of the manual machine (211). 13. Working tool according to one of paragraphs. 6-12, characterized in that the ratio between the diameter (D1) of the first boundary circle (23) and the diameter (D2) of the second boundary circle (27) is in the range from 50 to 95%, in particular from 60 to 90%, preferably from 65 to 85%, and particularly preferably 70 to 80%. 14. The use of a working tool according to one of paragraphs. 1-13 as a working tool for a manual machine (211), in particular an angle grinder, capable of driving the working tool (11) at a speed of over 10,000 rpm or over 20,000 rpm. 15. Processing system, including a working tool according to one of paragraphs. 1-13 and at least one manual machine (211) containing at least one holder (213), wherein the working tool (11) has at least one mounting coding element (304, 306, 312, 314) provided for interaction with at least one coding element (300, 302, 308, 310) on the holder (213) that ensures the correct installation when the working tool (11) is in the state installed on the holder (213).

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