JP5800079B1 - Cutting waste collection device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To sufficiently collect cutting waste even when a cutting tool is moved along a part to be cut when the shape of the object to be cut has a corner or is curved. Provided is a cutting waste collecting apparatus capable of cutting. SOLUTION: The cover member 16 of the dust collecting cover 10 can be rotated around the rotation center of the end mill 42, and the contact portion 20 provided along the edge of the opening 24 of the cover member 16 has the end mill 42 attached thereto. Even if it moves while rotating along the outer surface of the battery case M in order to cut the burrs 8 on the outer surface of the battery case M, it always comes into contact with the outer surface of the battery case M, and the cutting scraps cover the cover member 16. Prevent over-scattering. [Selection] Figure 2

Description

  The present invention relates to a cutting waste collecting device that collects cutting waste generated by cutting through a dust collection cover by a suction force generated by a suction device.

  Japanese Patent Laid-Open No. 2008-126376 (Patent Document 1) discloses a dust collection that surrounds a machining tool mounted on a spindle of a machine tool, covers a workpiece, and collects dust generated and scattered by the operation of the machining tool. The cutting waste collection | recovery apparatus which used the cover and connected one end to the air suction hole provided in this dust collection cover and connected the other end to the air suction machine is shown. This apparatus includes an air suction hose that guides dust from the air suction hole to the air suction machine by the suction force of the air suction machine. The dust collection cover has a shape in which the canopy side is attached to the main shaft and an opening for covering the material to be cut is provided on the side opposite to the canopy, and the inner diameter gradually increases toward the opening.

JP 2008-126376 A

  The conventional cutting waste collecting device has no particular problem when the surface shape of the portion to be cut of the workpiece is flat. However, when the shape of the workpiece has a corner or is curved, there is a problem that the cutting waste cannot be sufficiently collected when the cutting tool is moved along the portion to be cut. .

  The object of the present invention is to sufficiently collect cutting waste even when the cutting tool has a corner or is curved, and the cutting tool is moved along the cutting portion. It is providing the cutting waste collection | recovery apparatus which can do.

  The present invention is provided for a cutting apparatus that cuts a workpiece by causing a relative movement between the workpiece and a milling tool that cuts the workpiece of the workpiece, and is generated by cutting. The present invention is directed to a scrap collection device that collects the cut scraps with a suction force generated by the suction device and through a hose connecting the suction device and the dust collection cover. In the present invention, the dust collection cover includes a cover member, a suction port installation member, and a contact portion. The cover member is arranged with respect to the cutting device via a rotation support mechanism so as to be able to rotate about the rotation center of the milling tool, extends beyond the tip of the cutting blade of the milling tool, and extends the cutting blade. An opening that is continuously exposed from the tip to the base is provided. The suction port installation member is disposed inside the rotation support mechanism and is located on the base side of the cutting blade, and includes a suction port for applying a suction force to the inside of the cover member. The contact portion is provided along the edge of the opening of the cover member located in the direction in which the cutting waste machined by the milling tool scatters, and the contact surface comes into contact with the workpiece to be cut off. Prevent scattering.

  In the present invention, since the contact portion provided at the edge of the opening of the cover member located in the direction in which the machined cutting dust scatters is in contact with the portion to be cut, one of the cutting blades exposed from the opening. It prevents as much as possible that the cutting waste generated by cutting the part to be cut by the part comes out of the cover member. Even when the workpiece has a corner, the contact between the contact portion and the workpiece to be cut is maintained by the rotation of the cover member by the rotation support mechanism, and the corner to be cut is cut by the milling tool. In addition, cutting waste can be collected. Even after the milling tool exceeds the corner, the cover member rotates so that the contact portion maintains contact with the portion to be cut. Even if the cover member rotates, the suction port installation member does not rotate because it is disposed inside the rotation support mechanism. As a result, the hose connected to the suction port installation member does not rotate, and there is an advantage that there is no need to worry about handling the hose.

  The rotation support mechanism is disposed between the cover member and the suction port installation member, and it is preferable that a suction port is provided in the center of the suction port installation member so that the milling tool penetrates. If comprised in this way, since only a cover member rotates and another member does not rotate, a working space can be made compact.

  The rotation support mechanism includes a bearing that allows the cover member to rotate around the suction port installation member, and a locking mechanism that locks the cover member with respect to the suction port installation member at a predetermined rotation angle position. Are preferably provided. The locking mechanism has a structure that can be unlocked with a predetermined external force. By providing such a locking mechanism, the cover member can be fixed at a desired rotation angle position, so that the state where the contact portion is in contact with the portion to be cut can be reliably held. Moreover, the positional relationship between the cover member and the milling tool, which is necessary with the movement of the milling tool, can be easily changed by releasing the locking state and turning the cover member.

  The cover member preferably has a semi-cylindrical shape in which a cross-sectional shape in a direction orthogonal to the axis of the milling tool forms an arc shape. If it is this shape, the magnitude | size of the rotation area of a cover member can be made the smallest. Moreover, it is preferable that the contact surface of a contact part consists of a curved surface which curves so that it may become convex toward a to-be-cut part. When the contact surface of the contact portion is a curved surface, the contact surface can smoothly slide on the surface of the contacted object when the milling tool is moved along the contacted portion. Specifically, in order to realize this, the contact portion can be constituted by a columnar member or a cylindrical member extending along the edge of the opening.

  In addition, as a to-be-cut object, what comprised two members joined by welding or welding is also contained. In this case, the part to be cut is a burr that appears at the joint between the two members. Further, if the contour shape of the workpiece is a quadrangle, the cut portion always includes a corner portion. In this case, the predetermined rotation angle positions in the locking mechanism are rotation angle positions of 90 °, 180 °, and 270 ° with respect to the reference position (0 °). In this case, when the milling tool is configured to move around the workpiece, the cutting device is disposed at a position opposite to the moving direction of the milling tool as viewed from the milling tool. Thereby, scattering of cutting waste can be suppressed.

(A)-(d) is a cross-sectional view which respectively shows the transition of the relative positional relationship of the battery case, end mill, and waste collection cover in one embodiment of the cutting waste collection | recovery apparatus which concerns on this invention in order. . It is a perspective view which shows the state of FIG.1 (b) of the cutting waste collection | recovery apparatus shown in FIG. FIG. 3 is a perspective view showing a state in which a workpiece is removed in the state of FIG. 2. It is a schematic sectional drawing which shows the structure of a cutting waste collection | recovery apparatus. (A) And (b) is a figure which shows the latching state and latching release state of a latching mechanism.

  Hereinafter, one embodiment of a cutting waste collection device of the present invention is described in detail with reference to drawings.

  As shown in FIG. 1 to FIG. 4, the cutting waste collecting device of the present embodiment is a burr that has appeared on the outer peripheral surface of the battery case M formed by joining a lid member M2 to the battery case body M1 by ultrasonic welding. The cutting waste generated when cutting is collected. As shown in FIG. 4, the cutting waste collecting apparatus of the present embodiment includes a dust collecting cover 10, a hose 12 having one end connected to the dust collecting cover 10, and a suction device 14 having the other end connected to the hose 12. Using the end mill 42 as a milling tool, the cutting waste generated by cutting is collected through the dust collection cover 10 and the hose 12 by the suction force generated by the suction device 14.

  The cutting waste collecting device is provided for the cutting device 40 that cuts the battery case M that is a workpiece and the burr 8 (the portion to be cut) that is a portion to be cut of the battery case M with the end mill 42. As shown in FIG. 2, the burr 8 appears continuously at the joint where the lid and the main body are welded to form the battery case M, that is, near the four outer side lids of the battery case M. Therefore, the contour shape of the burr 8 (the part to be cut) is a shape along a quadrangle. The end mill 42 moves around the battery case M so as to go around the rectangular outline. In order to move the dust collection cover 10 and the end mill 42, an existing XY table or a robot arm can be used. Note that the end mill 42 may be fixed, and the battery case M may be placed on the rotary table and rotated to cause relative movement between the two.

  As shown in FIG. 4, the cutting device 40 includes an end mill 42 that rotates about the rotation center and cuts the burr 8 with a cutting blade provided on the outer peripheral surface, and the end mill 42 is attached to the rotation shaft via the chuck 43. A rotation drive device 44 including a motor and a table (not shown) on which the battery case M is mounted.

  The dust collection cover 10 includes a cover member 16, a suction port installation member 18, and a contact portion 20. The cover member 16 is arranged with respect to the cutting device 40 via the rotation support mechanism 21 so that the cover member 16 can be rotated within a predetermined range around the rotation center of the end mill 42, and the tip of the cutting blade of the end mill 42 is arranged. An opening 24 is provided that extends beyond and exposes the cutting blade continuously from the tip to the base.

  As shown in FIG. 1, the cover member 16 has a circular cross section in a direction perpendicular to the central axis of the end mill 42, and the whole of the cover member 16 is divided in half by a plane extending along the axial direction. It has a semi-cylindrical shape.

  As shown in FIG. 4, the rotation support mechanism 21 includes a bearing 22 and a locking mechanism 23 that allow the cover member 16 to rotate around the suction port installation member 18. The locking mechanism 23 has a structure for locking the cover member 16 at a predetermined rotation angle position with respect to the suction port installation member 18. Specifically, as shown in FIGS. 2 to 4, the locking mechanism 23 is connected to the upper end of the cover member 16 and rotates together with the cover member 16, and the disk-like plate 23 </ b> A. A sphere 23B fitted into a hemispherical recess 23a formed at an interval of 90 ° in the circumferential direction on the upper surface of the, and one end fixed to the sphere 23B and the other end fixed to the outer periphery of the suction port installation member 18 It is comprised from the to-be-fixed part 23D. The state in which the sphere 23B is fitted in the hemispherical recess 23a is the locking state of the locking mechanism 23. When a force is applied to the cover member 16 so that the cover member 16 rotates in the circumferential direction and the spherical body 23B comes out of the hemispherical recess 23a, the locked state is released. FIG. 5B shows a locked state, and FIG. 5A shows a locked release state. In the present embodiment, the predetermined rotation angle position in the locking mechanism is a rotation angle position of 90 °, 180 °, and 270 ° with respect to the reference position (0 °). Even in the unlocked state, since the spherical body 23B is in contact with the disk-like plate 23A, a weak brake is applied due to frictional resistance. Needless to say, a locking structure such as a ratchet mechanism may be adopted in addition to the combination of the sphere and the concave portion.

  The bearing 22 is disposed between the cover member 16 and the suction port installation member 18, and a suction port 26 is provided at the center of the suction port installation member 18 so that the end mill 42 penetrates. The suction port installation member 18 is disposed inside the rotation support mechanism 21 and is positioned on the base side of the cutting blade of the end mill 42, and includes a suction port 26 for applying a suction force to the inside of the cover member 16. . In the present embodiment, a cylindrical hose attachment portion 19 extending in the horizontal direction is integrally provided on the outer wall portion of the suction port installation member 18. The inside of the hose attachment portion 19 and the suction port 26 are in communication. Therefore, the cutting waste sucked from the suction port 26 is sucked and conveyed to the suction device 14 through the hose 12.

  The contact part 20 is provided along the edge part of the opening part 24 of the cover member 16 located in the direction in which the cutting waste machined by the end mill 42 scatters, and the contact part 20 is a battery case M which is a part to be cut. The cutting waste is prevented from being scattered by coming into contact with the outer surface of the.

  For example, in FIG. 1A, the cutting blade provided on the outer peripheral surface of the end mill 42 cuts the burrs 8 protruding from the surface of the battery case M when the end mill 42 rotates in the clockwise direction in FIG. Then, as shown by the arrow, most of the cutting waste is scattered leftward in FIG. Therefore, in FIG. 1A, the contact portion 20 is located on the left side of the end mill 42.

  The contact part 20 consists of a curved surface that curves so as to be convex toward the battery case M. That is, the contact portion 20 is configured by a cylinder extending along the left edge of the opening 24 so that the axis is parallel to the axis of the end mill 42, and the outer peripheral surface of the cylinder forms a curved surface. When the cutting operation is started, the operator sets the position of the dust collection cover 10 so that the contact portion 20 follows the side surface of the battery case M as shown in FIG.

[Description of operation]
Next, the operation of the present embodiment will be described.

  First, the battery case M is fixed to a table (not shown), and the end mill 42 is moved so that the cutting blade on the outer peripheral surface of the end mill 42 contacts the first outer surface of the battery case M. At this time, as shown in FIG. 1A, the end mill 42 is in contact with the outer surface S <b> 1 of the battery case M, and the contact portion 20 is in contact with the outer surface S <b> 1 of the battery case M. At this time, as shown in FIG. 1A, the edge of the cover member 16 where the contact portion 20 is not provided is in a state of being close to the outer side surface S <b> 1 of the battery case M. At this time, the locking mechanism 23 is in a locked state.

  Cutting is started in such a state that the positional relationship among the end mill 42, the cover member 16, and the battery case M is established. That is, the rotation drive device 44 that rotates the end mill 42 is operated, the suction device 14 starts suction, and the end mill 42 and the cover member 16 start to move.

  Since the end mill 42 rotates in the clockwise direction in the state shown in FIG. 1A, most of the cutting waste of the burr 8 on the outer surface S1 of the battery case M by the end mill 42 is directed toward the contact portion 20 side. Although scattering occurs, further scattering is prevented by the inner peripheral surface of the cover member 16 or the contact portion 20, and the suction device 26 collects the suction device 14 through the hose 12 with the suction force from the suction port 26.

  When the end mill 42 and the cover member 16 are moved around the battery case M in the clockwise direction while cutting by the end mill 42 is continued, the end mill 42 has the next outer side surface S2 adjacent to the first outer side surface S1. Is reached (see FIG. 1B).

  Here, the moving directions of the end mill 42 and the cover member 16 are changed by 90 °. By changing the moving direction, a reaction force is applied to the cover member 16 from the outer surface of the battery case M through the contact portion 20, and a force for releasing the locked state from the cover member 16 to the locking mechanism 23 is applied. 16 enters the unlocked state and starts rotating. And as shown in FIG.1 (c), the end mill 42 will be in the state which moves along the next outer side surface S2 of the battery case M, cutting the burr | flash 8 on the next outer peripheral surface S2. At this time, the contact portion 20 of the cover member 16 is still in contact with the first outer side surface S1 of the battery case M, and the cover member 16 rotates clockwise as shown in FIG. 20 continues to move on the next outer surface S2.

  When the end mill 42 continues to move on the next outer surface S2 of the battery case M, the cover member 16 in which the opening 24 covered the first outer surface S1 at the start of the operation is the first shown in FIG. The posture changes from 90 to 90 ° in the clockwise direction as shown in FIG. In this state, the locking mechanism 23 is in a locked state. Since the contact surface of the contact portion 20 is a curved surface, when the angle e between the first outer surface S1 and the next outer surface S2 is reached (when the state shown in FIG. 1b is reached), the angle e You can get over the corners smoothly without getting caught.

  In the state of FIG. 1B to FIG. 1D, most of the cutting waste produced by the cutting of the end mill 42 scatters in the direction of the arrow, but the contact portion 20 of the cover member 16 whose posture has been changed is the battery case M. Therefore, the cutting waste is collected almost without being scattered to the outside of the cover member 16.

  In this way, the outer peripheral surface of the battery case M is changed from the next outer surface S2 to the third outer surface S3, from the third outer surface S3 to the fourth outer surface S4, and from the fourth outer surface S4 to the first outer surface. When the end mill 42 moves to S1 and the cover member 16 rotates 360 ° and returns to the starting position in FIG. 1A, all the burrs 8 that existed around the outer peripheral surface of the battery case M are all present. It is cut and the deburring operation for one battery case M is completed.

  As described above, in the present embodiment, the opening of the cover member 16 is located in the direction in which the machined chips are scattered while the deburring operation is performed around the outer peripheral surface of the battery case M. Since the contact portion 20 provided at the edge of the contact 24 is always in contact with the outer surface of the battery case M, the cutting waste generated by cutting the burr 8 by a part of the cutting blade of the end mill 42 exposed from the opening 24. However, scattering to the outside of the cover member 16 can be prevented as much as possible.

  The battery case M has a quadrangular cross section and has a corner between adjacent outer surfaces, but the cover member 16 is rotated by the rotation support mechanism 21 so that the contact part 20 and the outer surface of the battery case M are rotated. The end burr 8 is cut by the end mill 42, and much of the cutting waste can be recovered.

  Even after the end mill 42 exceeds the corner portion, the cover member 16 rotates so that the contact portion 20 maintains contact with the outer surface of the battery case M. Even if the cover member 16 rotates, the suction port installation member 18 is disposed inside the rotation support mechanism 21 and therefore does not rotate. As a result, the hose 12 connected to the suction port installation member 18 does not rotate, and there is an advantage that there is no need to worry about the handling of the hose 12.

  According to the present invention, since the contact portion provided at the edge of the opening of the cover member is in contact with the workpiece regardless of the shape of the workpiece, most of the cutting waste comes out of the cover member. Many of them can be recovered without any trouble.

DESCRIPTION OF SYMBOLS 8 Burr 10 Waste collection cover 12 Hose 14 Suction device 16 Cover member 18 Suction port installation member 20 Contact portion 21 Rotation support mechanism 22 Bearing 23 Locking mechanism 24 Opening portion 26 Suction port 40 Cutting device 42 End mill 44 Drive device 46 Table M Battery case

Claims (7)

Cutting generated by cutting provided to a cutting device that cuts the workpiece by causing a relative movement between the workpiece and a milling tool that cuts the workpiece of the workpiece. A cutting waste collecting device for collecting waste through a dust collection cover and a hose connecting the suction device and the waste collection cover with a suction force generated by the suction device,
The dust collection cover is
It is arranged with respect to the cutting device via a rotation support mechanism so as to be able to rotate around the rotation center of the milling tool, extends beyond the tip of the cutting blade of the milling tool, and A cover member comprising an opening that continuously exposes a part from the tip to the base;
A suction port installation member provided inside the rotation support mechanism and located on the base side of the cutting blade, and having a suction port for applying the suction force to the inside of the cover member;
It is provided along the edge of the opening of the cover member located in the direction in which the cutting scraps cut out by the milling tool are scattered, and the contact surface comes into contact with the workpiece to be cut. With a contact portion that prevents scattering ,
The cutting waste collecting apparatus according to claim 1, wherein the contact portion is formed of a curved surface that curves so as to be convex toward the cut portion . The rotation support mechanism is disposed between the cover member and the suction port installation member,
Shavings collecting apparatus according to claim 1, wherein the suction port is provided so that the milling tool penetrates the center portion of the suction port installation member. The rotation support mechanism includes a bearing that allows the cover member to rotate around the suction port installation member;
A locking mechanism for locking the cover member with respect to the suction port installation member at a predetermined rotation angle position;
The cutting waste collecting apparatus according to claim 1 or 2 , wherein the locking mechanism has a structure that can be locked by a predetermined external force. The cover member has a semi-cylindrical shape in which a cross-sectional shape in a direction orthogonal to the axis of the milling tool forms an arc shape,
The cutting scrap collecting apparatus according to claim 3 , wherein the contact portion is formed of a columnar member or a cylindrical member extending along the edge portion of the opening. The cutting waste collecting apparatus according to any one of claims 1 to 4 , wherein the milling tool is an end mill. The workpiece is constructed by joining two members by welding or welding,
The cutting waste collecting apparatus according to any one of claims 1 to 5 , wherein the portion to be cut is a burr that appears at a joint portion between the two members. The contour shape of the workpiece is a quadrangle,
The predetermined angle is 90 °;
The cutting device is configured such that the milling tool moves around the workpiece,
The cutting waste recovery apparatus according to claim 3 , wherein the contact portion is at a position opposite to a moving direction of the milling tool when viewed from the milling tool.

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