CN115365964B - Portable cylindrical grinding machine - Google Patents

Abstract

The invention discloses a portable cylindrical grinding machine, which comprises a main machine and a shell for protecting the main machine, wherein the main machine comprises a grinding wheel, a power output mechanism, a centering mechanism and a lifting mechanism, and the grinding wheel is fixed at the power output end of the power output mechanism and is used for grinding the damaged part of a repaired piece; the centering mechanism comprises a front plate and a rear plate, wherein V-shaped bayonets with downward openings are respectively formed in the front plate and the rear plate, the vertical bisector surface of each V-shaped bayonet is coplanar with the axial lead of the grinding wheel, and the grinding wheel is positioned above each V-shaped bayonet; the power output mechanism and the lifting mechanism are arranged between the front plate and the rear plate, and the lifting mechanism is arranged above the power output mechanism and is used for adjusting the distance between the grinding wheel and the repaired piece; the shell is provided with a handle convenient for handheld operation. The invention can reduce the working strength and improve the working efficiency, and is suitable for high-precision repair of damaged parts of various points, lines and surfaces of cylindrical and shaft parts.

Description

Portable cylindrical grinding machine

Technical Field

The invention relates to the technical field of part repair, in particular to a portable cylindrical grinding machine.

Background

The damage of 3 different forms of points, lines and surfaces can occur in the use process of the cylindrical and shaft parts, so that the parts fail, the damaged cylindrical and shaft parts must be repaired, and at present, the traditional repair mode comprises the following 3 types:

1. grinding repair of a grinding machine is high in repair precision, the repair mode is not capable of repairing an ultralong piece on site due to the machining capacity of the grinding machine, the point damage and the axial line damage cannot be repaired locally, only the surface of the workpiece rotating for 360 degrees can be repaired, meanwhile, the straightness requirement on the repaired piece is extremely high, even if the bending value of the repaired piece is in a specified range, the phenomenon of thick ends and thin middle parts can occur in the grinding process, the workpiece is scrapped, and in a word, the repair mode is time-consuming and labor-consuming and is not particularly suitable for emergency repair;

2. the method can repair three damaged surfaces of a dotted line and a surface, but the precision of the repaired piece in roundness and cylindricity is difficult to control, and only additive repair can be performed, so that strict requirements are made on the abrasion loss of a workpiece, and the workpiece cannot be repaired by the method if the abrasion loss exceeds 0.4 mm;

3. the manual hand-held angle grinder is used for polishing and repairing, and has the advantages of high labor intensity, low working efficiency, poor working safety, no basic guarantee of machining precision and the like, although the cost is low and the manual hand-held angle grinder is not limited by factors such as the length of a workpiece and the like, and also has the field repairing capability.

Therefore, there is an urgent need for a portable cylindrical grinding machine that can reduce the working strength, improve the working efficiency, and can be adapted to the high-precision repair of damaged portions of various points, lines and surfaces of cylindrical and shaft-like parts.

Disclosure of Invention

Aiming at the problems existing in the prior art, the invention aims to provide a portable cylindrical grinding machine so as to solve the problems of time and labor waste, limited size of a repaired part, low grinding repair precision and poor safety existing in the repair of the existing cylindrical and shaft parts.

In order to solve the problems, the invention adopts the following technical scheme:

the portable cylindrical grinding machine comprises a main machine and a shell for protecting the main machine, wherein the main machine comprises a grinding wheel, a power output mechanism, a centering mechanism and a lifting mechanism, and the grinding wheel is fixed at the power output end of the power output mechanism and is used for grinding the damaged part of a repaired piece;

the centering mechanism comprises a front plate and a rear plate, wherein the front plate and the rear plate are fixedly connected through a connecting rod, a V-shaped bayonet with a downward opening is respectively formed in the front plate and the rear plate, the vertical bisector surface of the V-shaped bayonet is coplanar with the axial lead of the grinding wheel, and the grinding wheel is positioned above the V-shaped bayonet;

The power output mechanism and the lifting mechanism are arranged between the front plate and the rear plate, and the lifting mechanism is arranged above the power output mechanism and is used for adjusting the distance between the grinding wheel and the repaired piece;

the shell is provided with a handle convenient for handheld operation.

Further, as the preferable technical scheme, the power output mechanism comprises a motor, a speed reducer and an output shaft assembly, the speed reducer is linked with the motor, and the grinding wheel is linked with the speed reducer through the output shaft assembly.

Further, as a preferable technical scheme, the lifting mechanism comprises a lifting motor, a spiral lifting machine assembly and at least two sets of telescopic guiding devices respectively fixed on a front plate and a rear plate, the lifting motor is arranged above the motor, the lifting motor comprises a lifting main motor and a lifting speed reducer, the lifting main motor transmits lifting power to a power input end of the spiral lifting machine assembly through the lifting speed reducer, a power output end of the spiral lifting machine assembly is fixedly connected with the motor, the upper parts of at least two sets of telescopic guiding devices are respectively correspondingly fixed on the tops of the front plate and the rear plate, the lower parts of at least two sets of telescopic guiding devices are fixedly connected with a horizontal structure formed by the motor or the motor and a grinding wheel, front lifting ports and rear lifting ports which are the same in size and shape and are positioned at the same horizontal height are respectively arranged on the front plate and the rear plate, the front lifting opening is embedded to be equipped with front lifting opening assorted and can along front lifting opening upper and lower free movement's preceding slider, be equipped with on the front bezel of front lifting opening both sides and prevent preceding outer splint, the preceding interior splint of front sliding opening break away from, preceding outer splint, preceding interior splint realize fixed connection with preceding slider respectively, and preceding outer splint, preceding interior splint, preceding slider can wholly along front lifting opening upper and lower free movement, the front end of motor passes preceding interior splint, preceding slider, preceding outer splint in proper order and respectively with preceding interior splint, preceding slider, preceding outer splint realize fixed connection, the back lifting opening is embedded to be equipped with back lifting opening assorted and can along back lifting opening upper and lower free movement's back slider, be equipped with on the back bezel of back lifting opening both sides and prevent back slider break away from back lifting opening back outer splint, back interior splint, back outer splint, back lifting opening, back outer splint, the rear inner clamping plate is fixedly connected with the rear sliding block respectively, the rear outer clamping plate, the rear inner clamping plate and the rear sliding block can move up and down freely along the rear lifting opening integrally, and the rear end of the motor is fixedly connected with the rear inner clamping plate, the rear sliding block and the rear outer clamping plate respectively.

Further, as the preferable technical scheme, the telescopic guiding device comprises a sleeve and a plug rod matched with the sleeve, the sleeve is respectively fixed on the front plate and the rear plate, the upper end of the plug rod is inserted into the sleeve, the lower end of the plug rod is fixedly connected with a motor or a horizontal structure formed by the motor and a grinding wheel, and a spring which is always in a compressed state is arranged in the sleeve.

Further, as the preferred technical scheme, the lifting device further comprises a supporting frame, wherein two ends of the supporting frame are respectively fixed on the front plate and the rear plate, a lifting motor and a spiral lifter assembly are respectively fixed on the supporting frame, the spiral lifter assembly comprises lifting driving teeth, lifting driven teeth, lifting bearing seats, tapered bearings, lifting screws and lifting rotary screw sleeves, the lifting driving teeth are fixed at the output end of a rotating shaft of a lifting speed reducer, the lifting bearing seats are fixed on the supporting frame, the tapered bearings are fixed in the lifting bearing seats, the lifting rotary screw sleeves are fixed at the rotating center of the tapered bearings, the lifting rotary screw sleeves are in rotary fit with the lifting screws, the lower ends of the lifting screw rods are fixedly connected with the motor, the lifting driven teeth are fixedly sleeved at the lower ends of the lifting rotary screw sleeves, and the lifting driven teeth are meshed with the lifting driving teeth.

Further, as preferred technical scheme, still include and adjust display device, adjust display device and include calibrated scale, calibrated scale initiative tooth and calibrated scale driven tooth all adopt horizontal rotation to set up, the calibrated scale initiative tooth realizes the linkage with the rotatory swivel nut that goes up and down, the meshing is realized with calibrated scale initiative tooth to calibrated scale driven tooth, and from taking small-size bearing in the calibrated scale driven tooth, the calibrated scale is fixed and realize the linkage with the up end of calibrated scale driven tooth, be equipped with the viewing aperture that is used for observing the calibrated scale reading on the casing.

Further, as the preferred technical scheme, the balance mechanism further comprises a balance shaft, balance shaft bearings are respectively arranged at two ends of the balance shaft, the balance shaft bearings at two ends of the balance shaft are respectively and correspondingly fixed on the front plate and the rear plate, balance gears are further arranged at two ends of the balance shaft, and balance racks meshed with the balance gears at two ends of the balance shaft are respectively fixed on the front inner clamping plate and the rear inner clamping plate.

Further, as a preferable technical scheme, the device further comprises a traveling mechanism, wherein the traveling mechanism comprises a traveling driving motor mounting seat, a traveling driving motor, a traveling screw rod and a travel rod, the traveling driving motor mounting seat is fixed on the repaired by a clamp, the traveling driving motor is arranged on the traveling driving motor mounting seat, the traveling driving motor drives the traveling screw rod to rotate by a traveling gear box assembly, the traveling screw rod and the travel rod are both fixed on the repaired by the clamp, and the traveling screw rod can freely rotate relative to the clamp;

The fixture comprises a V-shaped upper clamping plate, a lower clamping plate and a connecting rod for connecting the V-shaped upper clamping plate and the lower clamping plate, wherein a through hole for penetrating through the connecting rod is formed in the V-shaped upper clamping plate, a locking screw hole penetrating through the through hole is formed in the outer side of the through hole, a locking nut is arranged in the locking screw hole, a central hole for a traveling screw to penetrate through is formed in the middle of the lower clamping plate, a screw sleeve matched with the traveling screw is embedded in the central hole, guide holes for the travel rod to penetrate through are formed in the lower clamping plates on two sides of the central hole respectively, and a sliding sleeve matched with the travel rod is embedded in the guide holes;

the host is fixed on the repaired by the clamp, and can reciprocate along the repaired under the combined action of the traveling driving motor, the traveling screw rod and the travel rod.

Further, as an optimized technical scheme, the device further comprises a rotating mechanism, wherein the rotating mechanism comprises a rotating driving motor mounting seat, a rotating driving motor, a rotating fluted disc and a rotating caterpillar, the rotating driving motor mounting seat is fixed on a repaired piece through a clamp, the rotating driving motor mounting seat can rotate freely relative to the repaired piece, the rotating driving motor is arranged on the rotating driving motor mounting seat, the rotating caterpillar is locked and fastened on the repaired piece, and the rotating fluted disc is mounted at a power output end of the rotating driving motor through a rotating gearbox assembly and is matched with the rotating caterpillar, and the rotating driving motor mounting seat can rotate along the rotating caterpillar at will under the driving action of the rotating driving motor;

The walking driving motor mounting seat, the walking screw rod and the travel rod are fixed on the repaired piece through the clamp, and the walking driving motor mounting seat, the walking screw rod and the travel rod can freely rotate relative to the repaired piece, and the travel rod is fixed on the rotary driving motor mounting seat.

Further, as the preferable technical scheme, the device further comprises an angular displacement control mechanism, wherein the angular displacement control mechanism comprises a magnetic base, a plastic torsion bar, a shading sheet, a photoelectric switch mounting base and a photoelectric switch, the magnetic base can be adsorbed and fixed on a repaired piece, one end of the plastic torsion bar is fixed on the magnetic base, the shading sheet is fixed on the other end of the plastic torsion bar, the photoelectric switch is fixed on a clamp through the photoelectric switch mounting base, and a signal output end of the photoelectric switch is connected to a control loop where a rotary driving motor is located.

Compared with the prior art, the invention has the following beneficial effects:

(1) According to the invention, the V-shaped bayonets with downward openings are ingeniously arranged on the front plate and the rear plate respectively, and because the vertical bisecting surfaces of the V-shaped bayonets are coplanar with the axial lead of the grinding wheel 1, when the grinding machine is placed on a repaired piece for repairing operation, the V-shaped bayonets with the downward openings are clamped on the repaired piece, the centering and centering can be automatically and rapidly completed, and the V-shaped bayonets can be designed to avoid the situation that the repaired piece is excessively repaired to cause uneven thickness.

(2) According to the invention, the front lifting opening, the rear lifting opening, the front clamping plate, the rear clamping plate, the front sliding block, the rear sliding block and the like are respectively arranged on the front plate and the rear plate, so that the problem of machining precision is well solved, the axial movement of the grinder in the working process is greatly reduced, the precision can be controlled within 0.05 millimeter through experiments, and the better machining precision can be obtained.

(3) By arranging the telescopic guide device and the balance mechanism, the invention can eliminate the free gap between the lifting rotary screw sleeve and the lifting screw rod, prevent the grinding wheel from vibrating to influence the finish of a processing surface when grinding a workpiece, ensure that the motor is lifted at any position and has good levelness, ensure that the grinding wheel is contacted with a repaired piece more stably and reliably, and improve the grinding efficiency and the grinding precision.

(4) In the invention, the main machine is driven to reciprocate along the repaired piece by the running mechanism in the process of driving the main machine to reciprocate around the repaired piece by the rotating mechanism, so that the reciprocating motion of the grinding machine around the column is realized, the control of the swing amplitude of the grinding machine on the cylindrical surface is realized by combining the angular displacement control mechanism, the controllable operation of the repairing area is realized, and the repairing of three different damage forms of points, lines and surfaces can be really realized.

(5) The invention has the advantages of miniaturization and light weight, can be well suitable for actual field repair, even disassembly-free repair of repaired parts, and can select two modes of manual and automatic according to the geometric characteristics of the repair surface, thereby greatly improving the working efficiency.

Drawings

FIG. 1 is a schematic diagram of a host according to the present invention;

FIG. 2 is a schematic diagram of the positional relationship among the grinding wheel, the V-shaped bayonet and the repaired piece;

FIG. 3 is a schematic diagram of the structure of the lifting mechanism and the adjusting display device of the invention;

FIG. 4 is a schematic diagram showing the positional relationship among the running mechanism, the rotating mechanism, the host machine and the repaired piece according to the present invention;

FIG. 5 is a top view of the running gear and the rotating mechanism of the present invention;

FIG. 6 is a schematic view of a rotary mechanism according to the present invention;

FIG. 7 is a schematic view of the structure of the V-shaped upper clamping plate of the present invention;

FIG. 8 is a schematic view of the structure of the lower clamping plate of the present invention;

FIG. 9 is a schematic view of the positional relationship between the angular displacement control mechanism and the repaired piece and the clamp according to the present invention;

FIG. 10 is a schematic view of the positional relationship between the rotary caterpillar and the repaired member according to the present invention;

fig. 11 is a schematic diagram showing the positional relationship between the front plate, the rear plate, the front slider, the rear slider, the front outer clamping plate, the rear outer clamping plate, the front inner clamping plate, the rear inner clamping plate and the balance shaft.

The names corresponding to the reference numerals in the figures are:

1. grinding wheel, 2, protection cover, 3, output shaft assembly, 4, speed reducer, 5, motor, 6, front plate, 7, back plate, 8, front lifting opening, 9, connecting rod, 10, balance shaft, 11, balance shaft bearing, 12, balance shaft gear, 13, balance shaft rack, 14, lifting main motor, 15, lifting screw, 16, plunger, 17, spring, 18, dust cover, 19, handle, 20, cooling water nozzle, 21, lifting speed reducer, 22, lifting driving tooth, 23, lifting driven tooth, 24, lifting bearing seat, 25, lifting rotary screw sleeve, 26, dial driving tooth, 27, dial, 28, dial driven tooth, 29, driven tooth spacer, 30, observation opening, 31, walking driving motor mounting seat, 32, walking driving motor, 33, travel bar, 34, fixture, 35, a rotary driving motor mounting seat, 36, a rotary driving motor, 37, a rotary chain rail, 38, a magnetic base, 39, a plastic torsion bar, 40, a shading sheet, 41, a repaired piece, 42, a shell, 43, a walking screw, 44, a V-shaped bayonet, 45, a wear pad, 46, a sleeve, 47, a supporting frame, 48, a conical bearing, 49, a photoelectric switch mounting base, 50, a photoelectric switch, 51, a rear lifting opening, 52, a front sliding block, 53, a front outer clamping plate, 54, a front inner clamping plate, 55, a rear sliding block, 56, a rear outer clamping plate, 57, a rear inner clamping plate, 341, a V-shaped upper clamping plate, 342, a lower clamping plate, 343, a through hole, 344, a locking screw hole, 345, a locking nut, 346, a connecting rod, 347, a guide hole, 351, a rotary driving speed reducing motor, 352 and a rotary fluted disc.

Description of the embodiments

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments, and that all other embodiments obtained by persons of ordinary skill in the art without making creative efforts based on the embodiments in the present invention are within the protection scope of the present invention.

In the description of the present invention, it should be noted that the positional or positional relationship indicated by the terms such as "upper", "lower", "inner", "outer", "top/bottom", etc. are based on the positional or positional relationship shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "configured to," "engaged with," "connected to," and the like are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

Examples

As shown in fig. 1 and 2, the portable cylindrical grinding machine in this embodiment includes a main machine and a housing 42 for protecting the main machine, wherein the main machine includes a grinding wheel 1, a power output mechanism, a centering mechanism and a lifting mechanism, the grinding wheel 1 is fixed at a power output end of the power output mechanism and is used for grinding a damaged portion of a repaired member, and the grinding wheel 1 can be additionally provided with a protective cover 2 according to requirements.

Specifically, the centering mechanism of the embodiment comprises a front plate 6 and a rear plate 7, the front plate 6 and the rear plate 7 are fixedly connected through connecting rods 9, the number of the connecting rods 9 can be determined according to the needs, so that stable and reliable connection of the front plate 6 and the rear plate 7 can be realized, a V-shaped bayonet 44 with a downward opening is respectively formed in the front plate 6 and the rear plate 7, in order to reduce friction between the V-shaped bayonet 44 and a repaired piece, wear plates 45 can be arranged at the V-shaped bayonet 44, the wear plates 45 can be of the existing structure and materials, the vertical bisecting surface of the V-shaped bayonet 44 is coplanar with the axial lead of the grinding wheel 1, and the grinding wheel 1 is positioned above the V-shaped bayonet 44; the front plate 6 and the rear plate 7 serve as a part of a main machine protection shell, a quick centering function is further provided on the basis of protecting the protection intensity of the shell, the V-shaped bayonets 44 with downward openings are ingeniously formed in the front plate 6 and the rear plate 7 respectively, and as the vertical bisecting surfaces of the V-shaped bayonets 44 are coplanar with the axis of the grinding wheel 1, when a grinding machine is placed on a repaired piece for repairing operation, the V-shaped bayonets 44 with the downward openings are clamped on the repaired piece, the centering and centering can be automatically and quickly completed, and the situation that the repaired piece is too repaired to have uneven thickness can be avoided due to the design of the V-shaped bayonets. It should be noted that, when the opening angle of the V-shaped bayonet 44 of the present invention is not too large or too small, it is inconvenient to grind the repaired member with small diameter, and when the opening of the V-shaped bayonet 44 is too small, in order to meet the grinding requirement of the V-shaped bayonet on the repaired member with different diameters, the height of the whole host machine needs to be made very high, which results in the volume of the grinding machine becoming large, thus sacrificing the portability of the grinding machine, therefore, the preferred range of the opening angle of the V-shaped bayonet 44 of the present invention is 75-145 degrees in view of the combination.

The power output mechanism and the lifting mechanism of the embodiment are both arranged between the front plate 6 and the rear plate 7, and the lifting mechanism is arranged above the power output mechanism and is used for adjusting the distance between the grinding wheel 1 and the repaired piece so as to meet the repaired pieces with different specifications and sizes.

The handle 19 is arranged on the shell of the embodiment, so that an operator can repair the repaired piece with damaged points or small damaged area in a handheld mode conveniently and rapidly.

The embodiment provides a preferable power output mechanism, which specifically comprises a motor 5, a speed reducer 4 and an output shaft assembly 3, wherein the speed reducer 4 is linked with the motor 5, the grinding wheel 1 is linked with the speed reducer 4 through the output shaft assembly 3, the motor 5, the speed reducer 4, the output shaft assembly 3 and the grinding wheel 1 form a horizontal structure, the motor 5 drives the speed reducer 4 and applies a rotating force to the grinding wheel 1 through the output shaft assembly, the grinding wheel 1 rotates to polish and repair a repaired piece, and the grinding wheel 1 and the motor 5 are respectively positioned on two sides of a front plate 6. It should be noted that, the output shaft assembly 3 belongs to a well-known structure in the mechanical transmission field, so the specific structure and working principle of the output shaft assembly are not repeated in this embodiment.

Examples

As shown in fig. 1, the lifting mechanism is innovatively designed on the basis of embodiment 1, specifically, the lifting mechanism of the embodiment comprises a lifting motor, a spiral lifting mechanism assembly and at least two sets of telescopic guiding devices respectively fixed on a front plate 6 and a rear plate 7, preferably four sets of telescopic guiding devices are arranged, the telescopic guiding devices are respectively arranged on four corners of a main machine, the motor 5 and the grinding wheel 1 are ensured to keep good stability in the lifting process, and the four sets of telescopic guiding devices are arranged for structural and principle description. The lifting motor is arranged above the motor 5, the lifting motor comprises a lifting main motor 14 and a lifting speed reducer 21, the lifting main motor 14 transmits lifting power to a power input end of the spiral lifter assembly through the lifting speed reducer 21, a power output end of the spiral lifter assembly is fixedly connected with the motor 5, four sets of telescopic guiding devices are respectively and correspondingly fixed at the top of the front plate 6, the upper parts of the other two sets of telescopic guiding devices are respectively and correspondingly fixed at the top of the rear plate 7, the lower parts of the telescopic guiding devices are fixedly connected with the motor 5 or a horizontal structure formed by the motor 5 and the grinding wheel 1, a front lifting opening 8 and a rear lifting opening 51 which are the same in size and shape and are positioned at the same horizontal height are respectively arranged on the front plate 6 and the rear plate 7, a front sliding block 52 which is matched with the front lifting opening 8 and can move up and down freely along the front lifting opening 8 is embedded in the front lifting opening 8, the front plate 6 on the two sides of the front lifting opening 8 is provided with a front outer clamping plate 53 and a front inner clamping plate 54 for preventing the front sliding block 52 from separating from the front lifting opening 8, the front outer clamping plate 53 and the front inner clamping plate 54 are respectively fixedly connected with the front sliding block 52, the front outer clamping plate 53, the front inner clamping plate 54 and the front sliding block 52 can integrally move up and down along the front lifting opening 8, the front end of the motor 5 sequentially passes through the front inner clamping plate 54, the front sliding block 52 and the front outer clamping plate 53 and respectively fixedly connected with the front inner clamping plate 54, the front sliding block 52 and the front outer clamping plate 53, the rear lifting opening 51 is internally provided with a rear sliding block 55 which is matched with the rear lifting opening 51 and can move up and down along the rear lifting opening 51, the rear plate 7 on the two sides of the rear lifting opening 51 is provided with a rear outer clamping plate 56 for preventing the rear sliding block 55 from separating from the rear lifting opening 51, the rear inner clamping plate 57, the rear outer clamping plate 56 and the rear inner clamping plate 57 are respectively and fixedly connected with the rear sliding block 55, the rear outer clamping plate 56, the rear inner clamping plate 57 and the rear sliding block 55 can integrally move up and down along the rear lifting opening 51, and the rear end of the motor 5 is respectively and fixedly connected with the rear inner clamping plate 57, the rear sliding block 55 and the rear outer clamping plate 56.

The front lifting opening, the rear lifting opening, the front and rear inner clamping plates, the front sliding block and the rear sliding block of the embodiment solve the problem of machining precision well, the axial float generated by the grinding machine in the working process is greatly reduced, and the precision can be controlled within 0.05 millimeter through experiments, so that the better machining precision can be obtained.

Specifically, the telescopic guiding device of the embodiment includes a sleeve 46 and an insert rod 16 matched with the sleeve 46, the sleeve 46 is respectively fixed on the front plate 6 and the rear plate 7, the upper end of the insert rod 16 is inserted into the sleeve 46, the lower end of the insert rod 16 is fixedly connected with the motor 5 or a horizontal structure formed by the motor 5 and the grinding wheel 1, a spring 17 which is always in a compressed state is arranged in the sleeve 46, the telescopic guiding device formed by the sleeve 46 and the insert rod 16 can enable the motor 5 and the grinding wheel 1 to maintain good stability in the lifting process, and the free gap between the lifting rotary screw sleeve 25 and the lifting screw 15 can be eliminated due to the elastic force generated by the spring 17, so that the smoothness of a machining surface is prevented from being influenced by chattering when the grinding wheel grinds a workpiece, the grinding wheel 1 and a repaired part are enabled to realize relatively stable contact, and the grinding efficiency and the grinding precision are improved.

As shown in fig. 3 and 4, the present embodiment further includes a supporting frame 47, two ends of the supporting frame 47 are respectively fixed on the front plate 6 and the rear plate 7, and the lifting motor and the screw elevator assembly are both fixed on the supporting frame 47, the screw elevator assembly of the present embodiment includes a lifting driving tooth 22, a lifting driven tooth 23, a lifting bearing seat 24, a tapered bearing 48, a lifting screw 15 and a lifting rotating screw sleeve 25, the lifting driving tooth 22 is fixed on the output end of a rotation shaft of the lifting speed reducer 21, the lifting bearing seat 24 is fixed on the supporting frame 47, the tapered bearing 48 is fixed in the lifting bearing seat 24, a dust cover 18 can be arranged at the bottom of the lifting bearing seat 24, the lifting rotating screw sleeve 25 is fixed on the rotation center of the tapered bearing 48, and the lifting rotating screw sleeve 25 and the lifting screw 15 are in rotary fit, the lower end of the lifting screw 15 is fixedly connected with the motor 5, the lifting screw 15 preferably adopts a trapezoidal screw, the lifting driven tooth 23 is sleeved and fixed on the lower end of the lifting rotating screw sleeve 25, and the lifting driven tooth 23 is meshed with the lifting driving tooth 22.

In this embodiment, the lifting main motor 14 and the lifting speed reducer 21 drive the lifting driving teeth 22 and the lifting driven teeth 23 to rotate, and further drive the tapered bearing 48 to rotate, because the tapered bearing 48 and the lifting rotary screw sleeve 25 are fixed into a whole, that is, the lifting rotary screw sleeve 25 rotates synchronously along with the tapered bearing 48, the rotation of the lifting rotary screw sleeve 25 enables the lifting screw rod 15 to move up and down, that is, lifting of the motor 5 and the grinding wheel 1 is realized, because the design of the V-shaped bayonet is adopted, the lifting direction of the grinding wheel 1 is exactly on the reverse extension line of the angular bisector of the V-shaped bayonet, the distance between the grinding wheel 1 and the repaired piece can be adjusted through the lifting mechanism, so as to adapt to the repaired pieces with different diameters, meet different repairing requirements, and achieve relatively accurate control.

As shown in fig. 3, in order to realize more intuitive and accurate control, this embodiment further includes an adjustment display device, this embodiment's adjustment display device includes calibrated scale 27, calibrated scale driving tooth 26 and calibrated scale driven tooth 28 all adopt horizontal rotation setting, calibrated scale driving tooth 26 realizes the linkage with lift rotatory thread insert 25, calibrated scale driven tooth 28 is fixed in on the support frame 47 and realizes meshing with calibrated scale driving tooth 26, and from taking small-size bearing in the calibrated scale driven tooth 28, calibrated scale driven tooth 28 and support frame 47 can set up driven tooth spacer 29, driven tooth spacer 29 belongs to current structure for reduce the contact friction of calibrated scale driven tooth 28 and support frame 47, calibrated scale 27 and calibrated scale driven tooth 28's up end is fixed and is realized the linkage, be equipped with the viewing aperture 30 that is used for observing the calibrated scale reading on the casing 42, viewing aperture 30 can adopt transparent material to make.

In this embodiment, in the process of lifting the motor 5, the lifting rotary sleeve 25 drives the dial driving gear 26 to rotate, the dial driving gear 26 drives the dial driven gear 28 to rotate, the rotation angle condition is reflected on the dial 27, the height of the lifting change of the motor 5 can be clearly and intuitively known through the scale indicated on the dial 27, so that accurate and quick adjustment is realized, for example, after the host is placed on the repaired piece, the V-shaped bayonet is clamped into the repaired piece, at this time, the distance between the grinding wheel 1 and the repaired piece can be obtained through measurement, then the lifting main motor 14 is started until the descending height of the motor 5 reflected by the scale displayed by the dial 27 is equal to the distance between the measured grinding wheel 1 and the repaired piece, and the lifting main motor 14 can be closed, so that quick and accurate centering and centering between the grinding wheel 1 and the repaired piece are completed.

In the lifting process, as shown in fig. 1, the gravity center of the grinder, the front sliding block, the rear sliding block, the front and rear inner and outer clamping plates, the front and rear sliding blocks are respectively affected by friction and other factors between the front and rear plates, so that the front and rear sliding blocks can have different sliding speeds, further the grinder is inclined and blocked in the upgrading process, and the whole grinder is invalid. In the lifting process of the motor 5, the balance gears 12 at the two ends of the balance shaft 10, the front inner clamping plate 54 and the balance rack 13 of the rear inner clamping plate 57 are always in a meshed state, and the left-right swing of the motor 5 can be controlled within 0.06 mm by introducing the balance shaft, so that the motor 5 is ensured to have better levelness in any lifting position, and further the grinding wheel 1 and a repaired piece are ensured to be in a relatively positive contact state, so that better grinding efficiency and grinding precision are obtained.

Examples

As shown in fig. 4 and 5, the present embodiment further includes a running mechanism on the basis of embodiment 2, where the running mechanism of the present embodiment includes a running driving motor mount 31, a running driving motor 32, a running screw 43 and a travel rod 33, where the running driving motor mount 31 is fixed on the repaired by a fixture 34, the running driving motor 32 is disposed on the running driving motor mount 31, the running driving motor 32 drives the running screw 43 to rotate through a running gear box assembly, and the running gear box assembly belongs to an existing structure and is mainly used for realizing power transmission, so that excessive redundant description is not made on its specific structure and working principle in the present embodiment; the traveling screw 43 and the travel bar 33 are both fixed on the repaired by the clamp 34, the traveling screw 43 can freely rotate relative to the clamp, and the traveling screw 43 is preferably a trapezoidal screw;

as shown in fig. 7 and 8, the clamp 34 of the present embodiment includes a V-shaped upper plate 341, a lower plate 342, and a connecting rod 346 for connecting the V-shaped upper plate 341 and the lower plate 342, a through hole 343 for connecting the connecting rod 346 is provided on the V-shaped upper plate 341, a locking screw hole 344 penetrating the through hole 343 is provided on the outer side of the through hole 343, a locking nut 345 is provided in the locking screw hole 344, and the fixing requirements of repaired pieces with different diameters can be satisfied by adjusting the distance between the V-shaped upper plate 341 and the lower plate 342. The middle part of the lower clamping plate 342 is provided with a central hole 348 for the running screw 43 to pass through, the central hole 348 is internally provided with a threaded sleeve matched with the running screw 43, the threaded sleeve belongs to the existing structure, the threaded sleeve is matched with the running screw 43 to realize the reciprocating motion of a host machine along a repaired piece, the lower clamping plates 342 on two sides of the central hole 348 are also respectively provided with a guide hole 347 for the running rod 33 to pass through, the guide holes 347 are internally provided with a sliding sleeve matched with the running rod 33, the sliding sleeve belongs to the existing structure, and friction between the running rod 33 and the lower clamping plates 342 can be reduced.

The host machine of the present embodiment is fixed on the repaired by the fixture 34, and the host machine can reciprocate along the repaired under the combined action of the traveling driving motor 32, the traveling screw 43 and the travel rod 33.

According to the embodiment, by adopting the travelling mechanism, the travelling driving motor 32 drives the travelling screw 43 to rotate, so that the host machine can reciprocate along the repaired piece under the guiding action of the row Cheng Gan, the damaged part can be rapidly ground, the grinding precision is high, and under the condition that the height (distance from the V-shaped bayonet) of the motor 5 is unchanged, the grinding strength of the grinding wheel 1 to the repaired piece is consistent in the linear motion process of the host machine, the situation that the thickness of the repaired piece is uneven after repair is avoided, and the design ingenuity of the invention is reflected.

As shown in fig. 4, 5 and 6, the present embodiment further includes a rotation mechanism, specifically, the rotation mechanism of the present embodiment includes a rotation driving motor mount 35, a rotation driving motor 36, a rotation gear disc 352 and a rotation caterpillar 37, the rotation driving motor mount 35 is fixed on the repaired by the fixture 34, and the rotation driving motor mount 35 can freely rotate relative to the repaired, the rotation driving motor 36 is disposed on the rotation driving motor mount 35, and simultaneously matches with the rotation driving gear motor 351, the rotation driving motor 36 drives the rotation gear disc 352 to rotate through the rotation caterpillar 37, the rotation gear disc 352 is locked on the repaired, the rotation is realized by the rotation driving motor 36, the rotation driving gear motor 351, the rotation gear box assembly and the like, and is matched with the rotation caterpillar 37, and the rotation gear box assembly belongs to an existing structure and is mainly used for realizing power transmission, so that the present embodiment does not make excessive details about the specific structure and working principle thereof; the rotary drive motor mount 35 can arbitrarily rotate along the rotary caterpillar 37 under the drive of the rotary drive motor 36; as shown in FIG. 10, the rotating fluted disc 352 and the rotating caterpillar track 37 of the present embodiment are similar to the chain disc and chain of a bicycle, so the specific structure and the working principle are not repeated, the rotating caterpillar track 37 is skillfully adopted as the rotating track, firstly, the rotating caterpillar track 37 has better transmissibility, the main machine can conveniently move around the repaired piece, secondly, the rotating caterpillar track 37 has flexibility and high strength, and can adapt to the repaired piece with different diameters, and as the rotating caterpillar track 37 is formed by rotationally and fixedly connecting one chain buckle, the repaired piece with different diameters can be adapted by increasing and decreasing the number of the chain buckle, the closed position of the rotating caterpillar track 37 is locked by bolts, the whole rotating caterpillar track 37 is locked and fixed on the repaired piece, no relative motion is generated between the rotating caterpillar track 37 and the repaired piece, the rotating fluted disc 352 is driven by the rotating driving motor mounting seat 35 to rotate under the driving action of the rotating driving motor 36, and the rotating fluted disc 352 reversely drives the rotating fluted disc mounting seat 35 to rotate along the rotating caterpillar track 37 to realize the repairing piece with arbitrary rotation of the rotating caterpillar track 37, thereby realizing the curved line repairing movement of the grinding wheel.

In addition, as a preferred embodiment, the present embodiment may employ a double row structure of the rotary track 37, that is, two side-by-side chains are employed as the rotary track, one of which serves to lock the workpiece, preventing relative movement between the chain and the workpiece, and the other of which serves to cooperate with the rotary toothed disc 352, to effect movement of the grinding machine about the workpiece.

The travel drive motor mount 31, the travel screw 43, and the travel bar 33 of the present embodiment are fixed to the workpiece by the jig 34, and the travel drive motor mount 31, the travel screw 43, and the travel bar 33 are rotatable relative to the workpiece, and the travel bar 33 is fixed to the rotation drive motor mount 35. In the process that the rotating mechanism drives the main machine to move around the repaired piece, the traveling mechanism can also drive the main machine to reciprocate along the repaired piece, so that the reciprocating motion of the grinding machine around the column is realized, and the repairing of three different damage forms which can be simultaneously adapted to the point, the line and the surface is truly realized.

As shown in fig. 9, the present embodiment further includes an angular displacement control mechanism, specifically, the angular displacement control mechanism includes a magnetic base 38, a plastic torsion bar 39, a light shielding sheet 40, a photoelectric switch mounting base 49, and a photoelectric switch 50, wherein the magnetic base 38 is capable of being fixed on a repaired member in an adsorption manner, one end of the plastic torsion bar 39 is fixed on the magnetic base 38, the other end is fixed with the light shielding sheet 40, the photoelectric switch 50 is fixed on the fixture 34 through the photoelectric switch mounting base 49, and a signal output end of the photoelectric switch 50 is connected to a control circuit where the rotary driving motor 36 is located. It should be noted that, the magnetic base 38, the plastic torsion bar 39, the light shielding sheet 40, the photoelectric switch mounting base 49 and the photoelectric switch 50 of the present embodiment are all existing structures, so that the detailed structure and the working principle of the present embodiment will not be repeated.

When the host machine moves circularly around the repaired piece under the action of the rotating mechanism, the clamp 34 moves around the column, once the photoelectric switch on the clamp 34 is blocked by the shading sheet 40, the photoelectric switch 50 sends a detection signal to the controller of the rotary driving motor 36 to enable the rotary driving motor 36 to rotate reversely, and similarly, when the grinding machine is rotated to the other side, the photoelectric switch 50 on the clamp 34 is blocked by the shading sheet 40 on the other side, the photoelectric switch 50 sends a detection signal to the controller of the rotary driving motor 36 to enable the rotary driving motor 36 to rotate positively, so that the swing amplitude of the grinding machine on the cylindrical surface of the repaired piece can be controlled, and the controllable operation of the repairing area is realized. In addition, under the action of the angular displacement control mechanism, the electric wire winding device is not in full rotation when in a rotating working condition, and because the electric wires are wound on the workpiece after rotating one by one, the electric wire winding device can reciprocally perform a maximum rotation action which can approach 360 degrees according to the size of a damaged surface under the cooperation of the angular displacement control mechanism, so that the problem of winding the electric wires on the workpiece is avoided.

Of course, in order to obtain a better grinding effect, the cooling water nozzle 20 may be disposed with its water outlet disposed at a position close to the lower portion of the grinding wheel, which belongs to the conventional design, so that the specific structure, the installation position and the working principle of this embodiment will not be described in detail.

The above description is only of the preferred embodiments of the present invention; the scope of the invention is not limited in this respect. Any person skilled in the art, within the technical scope of the present disclosure, may apply to the present invention, and the technical solution and the improvement thereof are all covered by the protection scope of the present invention.

Claims (9)

1. A portable cylindrical grinding machine, characterized by: the grinding wheel (1) is fixed at the power output end of the power output mechanism and used for polishing the damaged part of the repaired piece;

the centering mechanism comprises a front plate (6) and a rear plate (7), wherein the front plate (6) and the rear plate (7) are fixedly connected through a connecting rod (9), a V-shaped bayonet (44) with a downward opening is respectively formed in the front plate (6) and the rear plate (7), the vertical bisecting surface of the V-shaped bayonet (44) is coplanar with the axial lead of the grinding wheel (1), and the grinding wheel (1) is positioned above the V-shaped bayonet (44);

the power output mechanism and the lifting mechanism are arranged between the front plate (6) and the rear plate (7), and the lifting mechanism is arranged above the power output mechanism and is used for adjusting the distance between the grinding wheel (1) and the repaired piece;

The shell (42) is provided with a handle (19) which is convenient for hand-holding operation;

the lifting mechanism comprises a lifting motor, a spiral lifting machine assembly and at least two sets of telescopic guide devices respectively fixed on a front plate (6) and a rear plate (7), the lifting motor is arranged above the motor (5) and comprises a lifting main motor (14) and a lifting speed reducer (21), the lifting main motor (14) transmits lifting power to a power input end of the spiral lifting machine assembly through the lifting speed reducer (21), a power output end of the spiral lifting machine assembly is fixedly connected with the motor (5), the upper parts of at least two sets of telescopic guide devices are respectively correspondingly fixed on the top of the front plate (6) and the top of the rear plate (7), the lower parts of at least two sets of telescopic guide devices are fixedly connected with a horizontal structure formed by the motor (5) or the motor (5) and a grinding wheel (1), the front lifting opening (8) and the rear lifting opening (51) which are respectively arranged on the front plate (6) and the rear plate (7) in the same size and shape and are positioned at the same horizontal height, the front lifting opening (8) and the front lifting opening (8) are embedded in the front lifting opening (8), the front lifting opening (52) is matched with the front sliding blocks (52) and the front opening (52) can be prevented from being separated from the front sliding blocks (52) on the front plate (8) and the front sliding blocks (52) and the front opening (52) can be freely moved The front inner clamping plate (54) is fixedly connected with the front sliding block (52) respectively, the front outer clamping plate (53), the front inner clamping plate (54) and the front sliding block (52) can move vertically freely along the front lifting opening (8), the front end of the motor (5) sequentially passes through the front inner clamping plate (54), the front sliding block (52), the front outer clamping plate (53) and respectively fixedly connected with the front inner clamping plate (54), the front sliding block (52) and the front outer clamping plate (53), the rear sliding block (55) which is matched with the rear lifting opening (51) and can move vertically freely along the rear lifting opening (51) are embedded in the rear lifting opening (51), the rear plates (7) on two sides of the rear lifting opening (51) are provided with rear outer clamping plates (56) and rear inner clamping plates (57) which prevent the rear sliding block (55) from being separated from the rear lifting opening (51), the rear outer clamping plates (56) and the rear inner clamping plates (57) are respectively fixedly connected with the rear sliding block (55), the rear outer clamping plates (56), the rear inner clamping plates (57) and the rear inner clamping plates (55) can move vertically freely along the rear lifting opening (51), and the rear sliding block (55) are respectively fixedly connected with the rear inner clamping plates (55).

2. The portable cylindrical grinding machine according to claim 1, wherein: the power output mechanism comprises a motor (5), a speed reducer (4) and an output shaft assembly (3), the speed reducer (4) is linked with the motor (5), and the grinding wheel (1) is linked with the speed reducer (4) through the output shaft assembly (3).

3. The portable cylindrical grinding machine according to claim 1, wherein: the telescopic guiding device comprises a sleeve (46) and an inserting rod (16) matched with the sleeve (46), the sleeve (46) is respectively fixed on a front plate (6) and a rear plate (7), the upper end of the inserting rod (16) is inserted into the sleeve (46), the lower end of the inserting rod (16) is fixedly connected with a horizontal structure formed by a motor (5) or the motor (5) and a grinding wheel (1), and a spring (17) which is always in a compressed state is arranged in the sleeve (46).

4. A portable cylindrical grinding machine according to claim 1 or 3, characterized in that: still include support frame (47), on the both ends of support frame (47) are fixed in front bezel (6), back bezel (7) respectively, and lift motor, spiral elevator assembly all are fixed in on this support frame (47), spiral elevator assembly includes lift initiative tooth (22), lift driven tooth (23), lift bearing frame (24), conical bearing (48), lift screw (15) and lift rotatory thread insert (25), lift initiative tooth (22) are fixed in the rotation axis output of lift speed reducer (21), lift bearing frame (24) are fixed in on support frame (47), conical bearing (48) are fixed in lift bearing frame (24), lift rotatory thread insert (25) are fixed in the rotation center of conical bearing (48), and lift rotatory thread insert (25) and lift screw (15) realize rotatory cooperation, the lower extreme and motor (5) of lift screw (15) realize fixed connection, lift driven tooth (23) cup joint is fixed in the lower extreme of lift rotatory thread insert (25), and lift driven tooth (23) and lift initiative tooth (22) are realized meshing.

5. The portable cylindrical grinding machine according to claim 4, wherein: still including adjusting display device, adjust display device includes calibrated scale (27), calibrated scale initiative tooth (26) and calibrated scale driven tooth (28), calibrated scale initiative tooth (26) all adopt horizontal rotation to set up with calibrated scale driven tooth (28), calibrated scale initiative tooth (26) are realized the linkage with rotatory swivel nut (25) that goes up and down, the meshing is realized with calibrated scale initiative tooth (26) to calibrated scale driven tooth (28), and from taking small-size bearing in calibrated scale driven tooth (28), the calibrated scale (27) is fixed and is realized the linkage with the up end of calibrated scale driven tooth (28), be equipped with on casing (42) and be used for observing viewing aperture (30) of calibrated scale reading.

6. The portable cylindrical grinding machine according to claim 4, wherein: the balance mechanism comprises a balance shaft (10), balance shaft bearings (11) are respectively arranged at two ends of the balance shaft (10), the balance shaft bearings (11) at two ends of the balance shaft (10) are respectively and correspondingly fixed on a front plate (6) and a rear plate (7), balance gears (12) are also arranged at two ends of the balance shaft (10), and balance racks (13) meshed with the balance gears (12) at two ends of the balance shaft (10) are respectively fixed on the front inner clamping plate (54) and the rear inner clamping plate (57).

7. The portable cylindrical grinding machine according to claim 1, wherein: the walking mechanism comprises a walking driving motor mounting seat (31), a walking driving motor (32), a walking screw rod (43) and a travel rod (33), wherein the walking driving motor mounting seat (31) is fixed on a repaired piece through a clamp (34), the walking driving motor (32) is arranged on the walking driving motor mounting seat (31), the walking driving motor (32) drives the walking screw rod (43) to rotate through a walking gear box assembly, the walking screw rod (43) and the travel rod (33) are both fixed on the repaired piece through the clamp (34), and the walking screw rod (43) can freely rotate relative to the clamp;

the clamp (34) comprises a V-shaped upper clamping plate (341), a lower clamping plate (342) and a connecting rod (346) for connecting the V-shaped upper clamping plate (341) and the lower clamping plate (342), a through hole (343) for penetrating the connecting rod (346) is formed in the V-shaped upper clamping plate (341), a locking screw hole (344) penetrating the through hole (343) is formed in the outer side of the through hole (343), a locking nut (345) is arranged in the locking screw hole (344), a central hole (348) for enabling a traveling screw (43) to penetrate is formed in the middle of the lower clamping plate (342), threaded sleeves matched with the traveling screw (43) are embedded in the central hole (348), guide holes (347) for enabling a travel rod (33) to penetrate are formed in the lower clamping plate (342) on two sides of the central hole (348), and sliding sleeves matched with the travel rod (33) are embedded in the guide holes (347).

The host is fixed on the repaired by the clamp (34), and can reciprocate along the repaired under the combined action of the walking driving motor (32), the walking screw rod (43) and the travel rod (33).

8. The portable cylindrical grinding machine according to claim 7, wherein: the rotary mechanism comprises a rotary driving motor mounting seat (35), a rotary driving motor (36), a rotary fluted disc (352) and a rotary chain rail (37), wherein the rotary driving motor mounting seat (35) is fixed on a repaired piece through a clamp (34), the rotary driving motor mounting seat (35) can rotate freely relative to the repaired piece, the rotary driving motor (36) is arranged on the rotary driving motor mounting seat (35), the rotary chain rail (37) is locked and fastened on the repaired piece, the rotary fluted disc (352) is mounted at the power output end of the rotary driving motor (36) through a rotary gear box assembly and is matched with the rotary chain rail (37), and the rotary driving motor mounting seat (35) can rotate randomly along the rotary chain rail (37) under the driving action of the rotary driving motor (36);

The walking drive motor mounting seat (31), the walking screw (43) and the travel rod (33) are fixed on the repaired piece through the clamp (34), the walking drive motor mounting seat (31), the walking screw (43) and the travel rod (33) can freely rotate relative to the repaired piece, and the travel rod (33) is fixed on the rotary drive motor mounting seat (35).

9. The portable cylindrical grinding machine according to claim 8, wherein: the photoelectric switch comprises a clamp (34) and is characterized by further comprising an angular displacement control mechanism, wherein the angular displacement control mechanism comprises a magnetic base (38), a plastic torsion bar (39), a shading sheet (40), a photoelectric switch mounting base (49) and a photoelectric switch (50), the magnetic base (38) can be adsorbed and fixed on a repaired piece, one end of the plastic torsion bar (39) is fixed on the magnetic base (38), the shading sheet (40) is fixed at the other end of the plastic torsion bar, the photoelectric switch (50) is fixed on the clamp (34) through the photoelectric switch mounting base (49), and a signal output end of the photoelectric switch (50) is connected to a control loop where a rotary driving motor (36) is located.