Fine polishing equipment for bearing machining

Abstract

The application discloses a bearing machining fine polishing equipment in the technical field of bearing fine polishing, which comprises a rack, a rotating clamp and a polishing assembly are installed on the rack, and a grinding head is installed on the polishing assembly; the polishing assembly comprises a support installed on the rack, a connecting piece movably arranged at the end of the support, the end of the connecting piece is connected with the grinding head, and the connecting piece is sequentially provided with a clearance groove, a rotating shaft and a compensation groove from top to bottom; a sliding rod is slidably arranged on the support, and the end of the sliding rod is provided with a clearance shaft slidably arranged in the clearance groove and used for driving the top of the connecting piece to move; a guide rail is inserted into the end of the support and is provided with a guide groove in which the rotating shaft is slidably arranged; the rotating shaft guides the middle part of the connecting piece to move; a compensation shaft is rotatably arranged on the support and slidably arranged with the compensation groove; and a reciprocating mechanism is used for driving the sliding rod to reciprocate; the movement track of the grinding head can be changed by replacing the guide rail, so that the debugging time can be reduced, and the polishing cost and time can be shortened.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of bearing fine polishing, in particular to a fine polishing equipment for bearing machining. BACKGROUND

[0002] The groove polishing of a bearing is a crucial part of bearing fine polishing, which can effectively reduce the friction resistance of the bearing and improve the running stability and service life.

[0003] Because bearings are often adapted to different groove radii due to different working environments, traditional polishing equipment can only polish bearings of inherent specifications and models in batches and finely, and it is difficult to ensure the fine degree while processing bearings of multiple specifications and models in batches. The main difficulty of fine polishing of bearings of different models is that the traditional method usually uses grinding head swinging to match the arc shape of the bearing groove, and the groove arc shapes of different specifications are obviously different, and the rotation point position of the swing piece driving the grinding head swinging is fixed (i.e. Figure 10 the O point position is relative to the swing piece), that is, the rotation radius and curvature are fixed, so the same grinding head cannot be adapted to groove polishing of multiple models. SUMMARY

[0004] The technical problem of the application is to provide a fine polishing equipment for bearing machining, which can reduce the debugging time and shorten the polishing cost and time by changing the motion trajectory of the grinding head through replacing the guide rail.

[0005] To achieve the above object, the application provides the following technical scheme: a fine polishing equipment for bearing machining, comprising a rack, a rotating clamp and a polishing assembly are installed on the rack, the rotating clamp is used for clamping and driving the workpiece to rotate, the polishing assembly is provided with a grinding head, and the polishing assembly is used for driving the grinding head to move;

[0006] The polishing assembly comprises:

[0007] A support is installed on the rack;

[0008] An adapter is movably arranged at the end of the support, the end of the adapter is connected with the grinding head, and the adapter is sequentially provided with a clearance groove, a rotating shaft and a compensation groove from top to bottom;

[0009] A sliding rod is slidably arranged on the support, and a clearance shaft slidably arranged in the clearance groove is installed at the end of the sliding rod, and the sliding rod is used for driving the top of the adapter to move;

[0010] A guide rail is inserted into the end of the support, and a guide groove slidably arranged with the rotating shaft is formed in the guide rail; the rotating shaft guides the displacement of the middle part of the adapter;

[0011] The rotating shaft is arranged on the support and is slidably arranged in the supplement slot.

[0012] The reciprocating mechanism is arranged on the top of the support and is used for driving the slide rod to reciprocate.

[0013] As a further scheme of the present application, the grinding assembly further comprises:

[0014] The supplement clamp is arranged on the end of the support and is used for clamping the guide rail and pushing the guide rail to move towards the rotating shaft.

[0015] The limiting member is slidably arranged on the end of the support and is arranged with the reset spring between the support, and the limiting member is used for limiting the movement of the guide rail along the length direction, and the limiting member is arranged with the chamfer.

[0016] The locking structure is arranged between the limiting member and the supplement clamp.

[0017] The limiting member moves away from the end of the guide rail, and the limitation of the movement of the guide rail along the length direction is released, and the locking structure is used for synchronously releasing the clamping of the supplement clamp on the guide rail, so that the guide rail can move along the axial direction of the rotating shaft.

[0018] The cover plate is arranged on the end of the support by the buckle, and the force of the clamping of the supplement clamp on the guide rail is increased.

[0019] As a further scheme of the present application, the supplement clamp comprises:

[0020] The clamping plates are arranged on both sides of the guide rail and are arranged with the chamfers.

[0021] The scissors frame is used for driving the clamping plates to move towards each other, the scissors frame is arranged in pairs, and the two pairs of end points of the scissors frame are rotatably arranged, the two pairs of end points of the scissors frame away from the cover plate are slidably arranged with the clamping plates, and the two pairs of end points close to the cover plate are rotatably arranged with the clamping plates through the fixed shaft.

[0022] The elastic member is arranged between the support and the scissors frame, and the elastic member is rotatably arranged with the center hinge point of the scissors frame; the elastic member controls the movement of the clamping plates through the scissors frame, and the elastic member can be extruded by the cover plate to increase the pre-pressure.

[0023] As a further scheme of the present application, the elastic member comprises:

[0024] The connecting frame is fixedly arranged on the support and is slidably arranged with the adjusting rod.

[0025] The connecting seat is rotatably arranged at the center hinge point of the scissors frame.

[0026] The clamping spring is arranged between the adjusting rod and the connecting seat, and the adjusting rod drives the connecting seat to move through the clamping spring.

[0027] As a further scheme of the present application, the locking structure comprises:

[0028] The fixed locking piece is fixed with the limiting piece, the fixed locking piece is slidingly provided with the movable locking piece, and the fixed locking piece and the movable locking piece are located on both sides of the fixed shaft, respectively.

[0029] The cross rod is slidingly provided with the adjusting rod and the movable locking piece.

[0030] The limiting piece is fixed with the adjusting rod and located above the cross rod.

[0031] As a further scheme of the present application, the reciprocating mechanism comprises a driving motor, an output shaft of the driving motor is provided with a reciprocating turntable, the reciprocating turntable is provided with an adjusting groove, an end of the slide rod is fixedly provided with a reciprocating groove, the reciprocating groove is slidingly connected with a driving bolt, and the driving bolt is threadedly connected with an adjusting nut; the adjusting nut can adjust the position of the driving bolt installed in the adjusting groove.

[0032] As a further scheme of the present application, the bracket comprises a cantilever and a telescopic piece, and the telescopic piece is installed between the cantilever and the rack.

[0033] As a further scheme of the present application, the cover plate is fixedly provided with a reinforcing piece on one side close to the bracket, and the bracket is provided with a reinforcing groove on one side close to the cover plate, and the reinforcing groove is gap-fitted with the reinforcing piece.

[0034] Compared with the prior art, the present application has the following beneficial effects:

[0035] In the present application, the accommodation groove serving as a power input end is arranged on the adapter, so that the adapter is adapted to the reciprocating mechanism; the adapter can be moved along the length direction of the accommodation groove by the adapter and the supplementing piece and the supplementing shaft, so that the grinding head can be close to or away from the workpiece, and the adapter rotates to coincide with the axis of the supplementing shaft; the movement track of the adapter is limited by the sliding cooperation between the shaft arranged in the middle of the adapter and the guide groove; the guide track with the matching guide groove can be replaced according to the shape of the bearing channel; the guide track is relatively simple in structure for replacement, is convenient to maintain and reduces the debugging time; in addition, the guide track as a consumable part can be replaced, the maintenance cost is low, and the situation that the movement track of the grinding head deviates due to wear can be avoided.

[0036] In the application, the newly replaced guide rail is pressed into the bracket, under the action of the chamfer on the limiting piece, the limiting piece moves to both sides, the clamping plate moves synchronously, when the gap between the limiting pieces is enough to insert the guide rail, the guide rail is inserted into the bracket, at this time, the clamping plate moves to both sides with the limiting piece and remains, when the guide rail is completely inserted, the reset spring resets the limiting piece, the clamping plate contacts the guide rail and pushes it to the rotating shaft, so that the guide groove contacts the rotating shaft, and the quick installation and disassembly of the guide rail can be realized.

[0037] In the application, when the cover plate is installed, the elastic member increases the pressure applied to the center hinge point of the scissors frame, improves the clamping force of the clamping plate on the guide rail, increases the contact force between the guide groove and the rotating shaft, and the guide groove can tightly fit with the rotating shaft under the action of the pre-pressure, reducing the polishing error caused by the wear of the guide groove and the rotating shaft. BRIEF DESCRIPTION OF DRAWINGS

[0038] In order to more clearly illustrate the technical solutions of the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0039] Figure 1 It is a schematic diagram of the overall structure of the application;

[0040] Figure 2 It is a schematic diagram of the polishing assembly structure of the application;

[0041] Figure 3 It is a schematic diagram of the cross-sectional structure of the cantilever and its connection relationship of the application;

[0042] Figure 4 It is a schematic diagram of the structure of the position-filling clamp and its connection relationship of the application;

[0043] Figure 5 It is a schematic diagram of the motion principle of the connecting piece and its connection relationship of the application;

[0044] Figure 6 It is a schematic diagram of the structure of the connecting piece and its connection relationship of the application;

[0045] Figure 7 It is a schematic diagram of the structure of the locking structure and its connection relationship of the application;

[0046] Figure 8 It is a schematic diagram of the cross-sectional structure of the guide rail of the application;

[0047] Figure 9 It is a schematic diagram of the structure of the reciprocating mechanism of the application;

[0048] Figure 10 Fig. 1 is a schematic view of the grinding head and its movement state in the prior art fine grinding equipment for bearings;

[0049] In the drawings, the components represented by the respective reference numerals are listed as follows:

[0050] 1, frame; 11, rotating clamp; 12, grinding head; 2, grinding assembly; 21, support; 211, cantilever; 212, telescopic member; 22, connecting member; 221, clearance groove; 222, rotating shaft; 223, compensation groove; 23, sliding rod; 24, clearance shaft; 25, guide rail; 251, guide groove; 26, compensation shaft; 27, limiting member; 271, return spring; 28, cover plate; 281, reinforcing member; 282, reinforcing groove; 283, buckle; 3, compensation clamp; 31, clamping plate; 32, scissor frame; 33, fixed shaft; 34, elastic member; 341, connecting frame; 342, adjusting rod; 343, connecting seat; 344, clamping spring; 4, locking structure; 41, fixed locking member; 42, movable locking member; 43, cross bar; 44, limiting piece; 5, reciprocating mechanism; 51, reciprocating turntable; 52, adjusting groove; 53, reciprocating groove; 54, drive bolt; 55, adjusting nut; 56, drive motor. DETAILED DESCRIPTION

[0051] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0052] Please refer to Figures 1-10 The present application provides a technical solution: a fine grinding equipment for bearing machining, comprising a frame 1, wherein the frame 1 is provided with a rotating clamp 11 and a grinding assembly 2, the rotating clamp 11 is used for clamping and driving a workpiece to rotate, the grinding assembly 2 is provided with a grinding head 12, and the grinding assembly 2 is used for driving the grinding head 12 to move;

[0053] The rotating clamp 11 clamps the bearing to be ground and drives the workpiece to rotate, the grinding assembly 2 drives the grinding head 12 to swing along the bearing groove, and the grinding head 12 grinds the bearing groove;

[0054] The grinding assembly 2 comprises:

[0055] The support 21 is installed on the frame 1;

[0056] Connector 22 is movably disposed at the end of bracket 21. The end of connector 22 is connected to grinding head 12. Connector 22 is provided with relief groove 221, rotating shaft 222 and filling groove 223 from top to bottom.

[0057] The slide bar 23 is slidably mounted on the bracket 21, and its end is equipped with a relief shaft 24 that is slidably mounted in the relief groove 221, which is used to drive the top of the connecting piece 22 to move.

[0058] The guide rail 25 is inserted into the end of the bracket 21 and has a guide groove 251 that is slidably disposed with the rotating shaft 222; the rotating shaft 222 guides the displacement of the middle part of the connecting piece 22.

[0059] The replacement shaft 26 is rotatably mounted on the bracket 21 and is slidably mounted with the replacement groove 223;

[0060] The reciprocating mechanism 5 is installed on the top of the bracket 21 and is used to drive the slide bar 23 to move back and forth.

[0061] For details, see Figures 1-6 The reciprocating mechanism 5 drives the relief shaft 24 to reciprocate along the length of the slide rod 23 via the slide rod 23.

[0062] The clearance shaft 24 drives the connecting piece 22 to move one side of the clearance groove 221 via the clearance groove 221.

[0063] Since the pivot 222 in the middle of the connector 22 can only move along the guide groove 251, the side of the connector 22 near the filling groove 223 is restricted by the filling shaft 26 and can only move along the length direction of the filling groove 223.

[0064] See Figure 5 The right circular groove, when the connecting member 22 is pushed by the relief shaft 24, the connecting member 22 rotates about the axis of the compensation shaft 26, and the connecting member 22 drives the grinding head 12 to move in contact with the groove, thereby grinding and cutting the inner wall of the groove; the left inclined groove, the connecting member 22 rotates about the axis of the compensation shaft 26, and the upward movement of the connecting member 22 causes the axis of the compensation shaft 26 to descend relative to the connecting member 22. Figure 5 In the enlarged view on the right, the solid line between the connecting parts 22 represents the trajectory of the replacement shaft 26 relative to the connecting parts 22, allowing the grinding head 12 to rotate and move upward with the connecting parts 22, ensuring that the grinding head 12 always fits within the groove. By replacing the guide rail 25, guide grooves 251 of different shapes can be replaced, enabling the grinding head 12 to grind and cut different grooves. Replacing the plug-in guide rail 25 is structurally simpler than other methods of changing the movement trajectory of the grinding head 12, facilitating maintenance and reducing debugging time. In addition, the guide rail 25, as a wear part, can be replaced, resulting in low maintenance costs and preventing the grinding head 12 from deviating from its movement trajectory due to wear.

[0065] As a further scheme of the present application, the polishing assembly 2 further comprises:

[0066] The position-filling clamp 3 is installed at the end of the support 21 and is used to clamp the guide rail 25 and push the guide rail 25 to move towards the rotating shaft 222;

[0067] The limiting piece 27 is slidingly arranged at the end of the support 21 and is provided with a return spring 271 between the support 21 and the limiting piece 27, and the limiting piece 27 is used to limit the movement of the guide rail 25 along the length direction, and the limiting piece 27 is provided with a chamfer;

[0068] The locking structure 4 is arranged between the limiting piece 27 and the position-filling clamp 3;

[0069] Specifically, referring to Figure 2 and Figure 3 When the guide rail 25 is replaced,

[0070] The limiting piece 27 moves to both sides to store the force of the return spring 271, the limiting piece 27 is separated from the end of the guide rail 25 to release the limitation of the movement of the guide rail 25 along the length direction, and at the same time, the limiting piece 27 releases the clamping of the guide rail 25 by the position-filling clamp 3 through the locking structure 4, so that the guide rail 25 can move along the rotating shaft 222 in the axial direction, the guide rail 25 is first moved along the rotating shaft 222 in the axial direction to separate the rotating shaft 222 from the guide groove 251, and then the guide rail 25 is pulled out of the support 21 along the length direction;

[0071] The required guide rail 25 is replaced and installed, and the installation process is opposite to the dismounting process, which will not be described in detail here. The guide rail 25 can be quickly installed and dismounted, and the time and cost of pre-adjustment are reduced.

[0072] The cover plate 28 is installed at the end of the support 21 through the buckle 283, which can increase the clamping force of the position-filling clamp 3 on the guide rail 25, improve the stability of the guide rail 25, and further reduce the polishing error caused by the shaking of the rotating shaft 222, and improve the accuracy of the channel size.

[0073] As a further scheme of the present application, the position-filling clamp 3 comprises:

[0074] The clamping plate 31 is arranged at both sides of the guide rail 25 and is provided with a chamfer;

[0075] Scissor frame 32 is used to drive the moving of the clamping plate 31, the scissor frame 32 is arranged in pairs, and the two adjacent ends of the scissor frame 32 are rotatably arranged, the two ends of the scissor frame 32 away from the cover plate 28 are slidably arranged with the clamping plate 31, and the two ends close to the cover plate 28 are rotatably arranged with the clamping plate 31 through the fixed shaft 33, the fixed shaft 33 can move with the locking structure 4; the scissor frame 32 can rotate around the middle hinge point, synchronously move the clamping plate 31 on both sides, synchronize the clamping plate 31 on both sides, and ensure the stability of the guide rail 25;

[0076] The elastic member 34 is arranged between the support 21 and the scissor frame 32, and the elastic member 34 is rotatably arranged with the center hinge point of the scissor frame 32; the elastic member 34 controls the movement of the clamping plate 31 through the scissor frame 32, and can be pressed by the cover plate 28 to increase the pre-pressing force; when the cover plate 28 is installed, the elastic member 34 increases the pressure applied to the center hinge point of the scissor frame 32, improves the clamping force of the clamping plate 31 on the guide rail 25, and at the same time, increases the contact force between the guide groove 251 and the rotating shaft 222, in addition, the guide groove 251 and the rotating shaft 222 are connected. The wear at the connection can be reduced by tightly fitting the guide groove 251 and the rotating shaft 222 under the action of the pre-pressing force, thereby reducing the polishing error caused by the wear of the guide groove 251 and the rotating shaft 222;

[0077] Specifically, referring to Figure 3 and Figure 4 When the limiting member 27 moves to both sides, the locking structure 4 moves with it and drives the clamping plate 31 to separate from the guide rail 25 through the fixed shaft 33, so that the guide rail 25 can move axially along the rotating shaft 222, thereby facilitating the removal of the guide rail 25;

[0078] When installing, the newly replaced guide rail 25 is pressed into the support 21, and under the action of the chamfer on the limiting member 27, the limiting member 27 moves to both sides, and the clamping plate 31 moves synchronously, when the gap between the limiting member 27 is enough to insert the guide rail 25, the guide rail 25 is inserted into the support 21, at this time, the clamping plate 31 moves with the limiting member 27 to both sides and remains, when the guide rail 25 is completely inserted, the return spring 271 resets the limiting member 27, the clamping plate 31 contacts the guide rail 25 and pushes it to the rotating shaft 222, so that the guide groove 251 contacts the rotating shaft 222.

[0079] As a further scheme of the present application, the elastic member 34 comprises:

[0080] The connecting frame 341 is fixedly arranged on the support 21, and the adjusting rod 342 is slidably arranged;

[0081] The connecting seat 343 is rotatably arranged at the center hinge point of the scissor frame 32;

[0082] The clamping spring 344 is arranged between the adjusting rod 342 and the connecting seat 343, and the adjusting rod 342 drives the connecting seat 343 to move through the clamping spring 344;

[0083] Specifically, referring to Figure 3 and Figure 4 When the cover plate 28 is inserted with the support 21, the adjusting rod 342 contacts the cover plate 28 and moves with the cover plate 28, the adjusting rod 342 drives the connecting seat 343 to move through the clamping spring 344, the connecting seat 343 drives the center hinge point of the scissor frame 32 to move, so that the clamping plate 31 further approaches the guide rail 25, and the clamping force on the guide rail 25 is further increased, and the extrusion force of the guide groove 251 on the rotating shaft 222 is enhanced; when the guide rail 25 cannot move, the clamping spring 344 is stretched and stored, and is used for keeping the guide groove 251 in contact with the rotating shaft 222 at any time, so as to reduce the polishing error caused by the wear of the guide groove 251 and the rotating shaft 222.

[0084] As a further scheme of the present application, the locking structure 4 comprises:

[0085] The fixed locking part 41 is fixedly arranged with the limiting part 27, the fixed locking part 41 is slidably arranged with the movable locking part 42, and the fixed locking part 41 and the movable locking part 42 are respectively arranged on both sides of the fixed shaft 33;

[0086] The cross rod 43 is slidably arranged with the adjusting rod 342 and the movable locking part 42;

[0087] The limiting sheet 44 is fixedly arranged with the adjusting rod 342 and located above the cross rod 43;

[0088] Specifically, referring to Figure 4 When the limiting part 27 approaches each other, the fixed locking part 41 drives the fixed shaft 33 to approach each other, so that the clamping plate 31 approaches each other, and the clamping of the guide rail 25 is completed;

[0089] When the cover plate 28 is installed, the adjusting rod 342 also drives the limiting sheet 44 to move, the limiting sheet 44 contacts the cross rod 43 and drives the cross rod 43 to move, the cross rod 43 drives the adjusting rod 342 to move, the adjusting rod 342 is separated from the fixed shaft 33, so that the fixed shaft 33 is separated from the locking structure 4 and continues to approach each other (i.e. moves relative to the limiting part 27), and the clamping force on the guide rail 25 is increased.

[0090] As a further scheme of the present application, the reciprocating mechanism 5 comprises a driving motor 56, the output shaft of the driving motor 56 is provided with a reciprocating turntable 51, the reciprocating turntable 51 is provided with an adjusting groove 52, the end of the slide rod 23 is fixedly provided with a reciprocating groove 53, the reciprocating groove 53 is slidably connected with a driving bolt 54, and the driving bolt 54 is threadedly connected with an adjusting nut 55; the adjusting nut 55 can adjust the position of the driving bolt 54 installed in the adjusting groove 52;

[0091] Specifically, referring to Figure 2 and Figure 9 The output shaft of the driving motor 56 drives the driving bolt 54 to rotate through the reciprocating turntable 51, and the driving bolt 54 drives the sliding rod 23 to reciprocate through the reciprocating groove 53, so as to realize the reciprocating movement of the end of the connecting piece 22.

[0092] The position of the driving bolt 54 can be adjusted by loosening the adjusting nut 55, the reciprocating distance of the sliding rod 23 is changed, the polishing area of the polishing head 12 is changed, and the application range of the equipment is increased.

[0093] As a further scheme of the present application, the bracket 21 comprises a cantilever 211 and a telescopic piece 212, and the telescopic piece 212 is installed between the cantilever 211 and the rack 1.

[0094] Specifically, the telescopic piece 212 can adjust the height of the polishing head 12, and the connection mode of the telescopic piece 212 and the cantilever 211 is rotationally arranged, and the orientation of the polishing head 12 can also be adjusted, so that the polishing head 12 can polish the groove of the inner ring of the bearing, and the application range of the equipment is further increased.

[0095] As a further scheme of the present application, the side of the cover plate 28 close to the bracket 21 is fixedly provided with a reinforcing piece 281, and the side of the bracket 21 close to the cover plate 28 is provided with a reinforcing groove 282 which gap-fits with the reinforcing piece 281.

[0096] Specifically, the reinforcing piece 281 is inserted into the reinforcing groove 282, and cooperates with the buckle 283 to stably install the cover plate 28 on the bracket 21, and the cover plate 28 is convenient to disassemble.

Claims

1. A fine grinding apparatus for bearing machining, comprising a frame (1), characterized in that: The rack (1) is provided with a rotary clamp (11) and a polishing assembly (2), the rotary clamp (11) is used for clamping and driving the workpiece to rotate, and the polishing assembly (2) is provided with a grinding head (12) and is used for driving the grinding head (12) to move; The polishing assembly (2) comprises: a support (21) mounted on the rack (1); a connecting piece (22) movably arranged at the end of the support (21), the end of the connecting piece (22) is connected with the grinding head (12), and the connecting piece (22) is sequentially provided with a clearance groove (221), a rotating shaft (222) and a compensation groove (223) from top to bottom; a sliding rod (23) slidably arranged on the support (21) and provided at the end with a clearance shaft (24) slidably arranged in the clearance groove (221), used for driving the top of the connecting piece (22) to move; a guide rail (25) inserted into the end of the support (21) and provided with a guide groove (251) slidably arranged with the rotating shaft (222), the middle part of the connecting piece (22) is guided to move by the rotating shaft (222); a compensation shaft (26) rotatably arranged on the support (21) and slidably arranged with the compensation groove (223); a reciprocating mechanism (5) mounted on the top of the support (21) and used for driving the sliding rod (23) to reciprocate; The polishing assembly (2) further comprises: a compensation clamp (3) mounted on the end of the support (21) and used for clamping the guide rail (25) and driving the guide rail (25) to move towards the rotating shaft (222); a limiting piece (27) slidably arranged at the end of the support (21) and provided with a return spring (271) between the limiting piece (27) and the support (21), the limiting piece (27) is used for limiting the guide rail (25) to move along the length direction, and the limiting piece (27) is provided with a chamfer; a locking structure (4) arranged between the limiting piece (27) and the compensation clamp (3); the limiting piece (27) is moved away from the end of the guide rail (25), the limitation of the guide rail (25) to move along the length direction is released, the locking structure (4) is used for synchronously releasing the clamping of the compensation clamp (3) on the guide rail (25), and the guide rail (25) can move along the axis of the rotating shaft (222); a cover plate (28) mounted on the end of the support (21) by a buckle (283), the clamping force of the compensation clamp (3) on the guide rail (25) is increased; The compensation clamp (3) comprises: a clamping plate (31) arranged on both sides of the guide rail (25) and provided with a chamfer; scissor frames (32) used for driving the clamping plates (31) to move towards each other, the scissor frames (32) are arranged in pairs, adjacent two pairs of end points of the scissor frames (32) are rotatably arranged, two pairs of end points of the scissor frames (32) away from the cover plate (28) are slidably arranged with the clamping plates (31), and two pairs of end points of the scissor frames (32) close to the cover plate (28) are rotatably arranged with the clamping plates (31) by fixed shafts (33). An elastic member (34) is arranged between the support (21) and the scissor frame (32), and the elastic member (34) is rotationally arranged at the center hinge point of the scissor frame (32); the elastic member (34) controls the movement of the clamping plate (31) through the scissor frame (32), and can be pressed by the cover plate (28) to increase the pre-pressing force.

2. A fine polishing apparatus for bearing machining according to claim 1, characterized by: The elastic member (34) comprises: A connecting frame (341) is fixedly arranged on the support (21), and an adjusting rod (342) is slidingly arranged on the connecting frame (341); A connecting seat (343) is rotationally arranged at the center hinge point of the scissor frame (32); A clamping spring (344) is arranged between the adjusting rod (342) and the connecting seat (343), and the adjusting rod (342) drives the connecting seat (343) to move through the clamping spring (344).

3. The fine polishing apparatus for bearing machining according to claim 1 or 2, characterized by: The locking structure (4) comprises: A fixed locking member (41) is fixedly arranged with the limiting member (27), and the fixed locking member (41) slidingly arranges a movable locking member (42), and the fixed locking member (41) and the movable locking member (42) are respectively located on both sides of the fixed shaft (33); A cross rod (43) is slidingly arranged with the adjusting rod (342) and the movable locking member (42); A limiting piece (44) is fixedly arranged with the adjusting rod (342) and located above the cross rod (43).

4. The fine polishing apparatus for bearing machining according to claim 1, characterized by: The reciprocating mechanism (5) comprises a driving motor (56), and the output shaft of the driving motor (56) is provided with a reciprocating turntable (51), the reciprocating turntable (51) is provided with an adjusting groove (52), and the end of the sliding rod (23) is fixedly provided with a reciprocating groove (53), the reciprocating groove (53) is slidingly connected with a driving bolt (54), and the driving bolt (54) is threadedly connected with an adjusting nut (55); The adjusting nut (55) can adjust the position of the driving bolt (54) installed in the adjusting groove (52).

5. The fine polishing apparatus for bearing machining according to claim 1, characterized by: The support (21) comprises a cantilever (211) and a telescopic member (212), and the telescopic member (212) is arranged between the cantilever (211) and the rack (1).

6. The fine polishing apparatus for bearing machining according to claim 1, characterized by: The cover plate (28) is fixedly provided with a reinforcing member (281) on the side close to the support (21), and the support (21) is provided with a reinforcing groove (282) matched with the reinforcing member (281) on the side close to the cover plate (28).

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