Polishing device for outer raceway of bearing inner ring

Abstract

The invention discloses a bearing inner ring outer raceway polishing device which comprises a workbench, inner supporting clamps and a polishing mechanism, the workbench is provided with at least one polishing station, each polishing station is provided with one inner supporting clamp used for fixedly clamping a bearing inner ring, and a first motor is connected with the inner supporting clamps and used for driving the inner supporting clamps to rotate; the polishing mechanism comprises a transmission box, a second hydraulic cylinder is arranged on the top plate, and a telescopic rod of the second hydraulic cylinder is connected with the transmission box; a plurality of supporting arms are arranged on the other side of the transmission box, and polishing blocks are arranged at one ends of the supporting arms. The multiple polishing stations are arranged, and the multiple bearing inner rings are clamped on the inner supporting clamp of each polishing station, so that the clamping frequency during polishing of the bearing inner rings is reduced, and the polishing efficiency of the outer raceway of the bearing inner rings is improved; in addition, the multiple polishing stations adopt a parallel and alternate operation mode of'polishing-loading and unloading ', so that the operation waiting time is greatly shortened, and the working efficiency is further improved.

Description

Technical Field

[0001] This invention belongs to the technical field of bearing processing equipment, and specifically relates to a polishing device for the outer raceway of the inner ring of a bearing. Background Technology

[0002] In the field of mechanical manufacturing, bearings, as the core basic component for realizing the rotational motion of parts, are widely used in various equipment such as motors, machine tools, and automotive transmission systems. The operating accuracy, stability, and service life of bearings directly depend on the surface quality of their inner and outer raceways. The surface roughness of the raceways needs to be controlled within a reasonable range (usually Ra≤0.8μm) to reduce frictional losses between the balls and the raceways, avoid stress concentration caused by surface unevenness, and thus ensure smooth rolling of the balls within the raceways, reducing equipment operating noise and the risk of failure. Therefore, in the bearing manufacturing process, the polishing of the inner and outer raceways is a key process that determines product quality.

[0003] Currently, various bearing raceway polishing equipment has been developed in the industry, covering technologies such as abrasive wheel grinding, honing, and chemical polishing. Among them, mechanical grinding equipment with dedicated tooling positioning is the most widely used, such as the bearing inner ring outer raceway mirror grinding tool disclosed in CN222269749U. This type of equipment uses a fixture to precisely position a single bearing, and then uses an abrasive wheel or grinding head to grind and polish the raceway, achieving high machining accuracy. However, its structural design has significant limitations: limited by the single-station positioning method of the fixture, only one bearing workpiece can be clamped in each grinding operation. In bearing mass production scenarios, operators need to manually disassemble the machined bearing, clean the fixture positioning surface, re-clamp the new workpiece, and calibrate the position after each workpiece is processed. This repeated clamping operation mode not only results in a low proportion of effective processing time for the equipment, significantly reducing mass production efficiency, but also easily leads to deviations in the machining datum of different workpieces due to human operation errors, causing fluctuations in raceway dimensional accuracy and affecting the consistency of batch products. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a bearing inner ring outer raceway polishing device. By setting up multiple stations, each station can simultaneously clamp multiple bearing inner rings, thus solving the problem of low polishing efficiency of existing bearing inner ring outer raceways. At the same time, by reducing the frequency of clamping, it meets the batch processing requirements of bearing inner rings.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A polishing apparatus for the outer raceway of a bearing inner ring, comprising: The workbench is equipped with a guard plate, an operation window on one side of the guard plate, and a top plate on the upper part of the guard plate; the workbench has at least one polishing station.

[0006] Each polishing station is equipped with an inner support fixture for fixing and clamping the inner ring of the bearing. A first motor is provided on one side of the guard plate. The first motor is connected to the inner support fixture and is used to drive the inner support fixture to rotate, thereby driving the inner ring of the bearing to rotate. Multiple inner rings of the same specification are clamped on the same inner support fixture.

[0007] A polishing mechanism for polishing the outer raceway of the inner ring of a bearing includes a transmission box, several guide rails on the side wall of the guard plate, several sliders slidably connected to the guide rails on one side of the transmission box, a second hydraulic cylinder on the top plate, and the telescopic rod of the second hydraulic cylinder connected to the transmission box; several support arms on the other side of the transmission box, with a polishing block at one end of each support arm, the lower end of which conforms to the outer raceway of the inner ring of the bearing; the distance between adjacent support arms is greater than the width of the inner ring of the bearing, and the mechanism also includes several shims disposed between adjacent inner rings of the bearing to adjust the spacing between the inner rings of the bearing to accommodate the position of the polishing block.

[0008] Furthermore, the inner support clamp includes a main shaft, one end of which is connected to a first motor. A positioning end plate is fixedly connected to the main shaft to limit the initial installation position of the bearing inner ring on the main shaft. The positioning end plate is provided with several radially arranged guide grooves. The main shaft is also provided with a fixed bushing and a sliding bushing. Several parallel support rods are hinged to the sliding bushing. The other end of the support rods is connected to an inner support plate, which is supported on the inner wall of the bearing inner ring. One end of the inner support plate abuts against the positioning end plate. A guide bolt is threaded to the end of the inner support plate, and the guide bolt is intermittently disposed inside the guide groove. Several connecting rods are hinged to the fixed bushing. The other end of the connecting rod is hinged to the middle of a support rod near the fixed bushing. A first spring is provided between the fixed bushing and the sliding bushing. A locking sleeve is also threaded to the end of the main shaft.

[0009] Furthermore, the locking sleeving is provided with a tightening screw, and one end of the tightening screw is provided with a clamping plate. The clamping plate abuts against the outermost bearing inner ring. The positioning end plate and the clamping plate work together to restrict the displacement of the bearing inner ring in the spindle axial direction.

[0010] Furthermore, the locking screw sleeve is provided with several sliding grooves, the end of the sliding groove is provided with an end cap, and a sliding seat is slidably connected inside the sliding groove, and the tightening screw is threadedly connected to the sliding seat.

[0011] Furthermore, the end of the support arm is provided with a mounting groove, and the polishing block is intermittently installed inside the mounting groove. A second spring is provided inside the mounting groove, and the lower end of the second spring is connected to the polishing block. Under the elastic force of the second spring, the lower surface of the polishing block keeps in contact with the outer raceway of the inner ring of the bearing.

[0012] Furthermore, the upper part of the mounting groove is provided with a pressure cap, the inner cavity of the pressure cap corresponds to the size of the mounting groove, the pressure cap is threaded with an adjusting bolt, the lower part of the adjusting bolt is movably connected with a sliding plate, and the upper end of the second spring abuts against the sliding plate.

[0013] Furthermore, the workbench is provided with a support mechanism, which is installed at the lower part of the inner support fixture to support the bottom of the bearing inner ring. The support mechanism includes a support frame, and support rollers are rotatably connected to both sides of the support frame. After the bearing inner ring is clamped in the inner support fixture, its lower part is supported on the support rollers.

[0014] Furthermore, each of the inner walls on both sides of the support frame is provided with a groove, and a brush is detachably installed in the groove for real-time cleaning of the abrasive debris generated during the polishing of the bearing inner ring.

[0015] Furthermore, the top plate is provided with a first hydraulic cylinder, the guard plate is provided with an adjustment groove, a first motor seat is slidably connected inside the adjustment groove, the first motor is installed on one side of the first motor seat, and the main shaft passes through the first motor seat and is connected to the first motor; the telescopic rod of the first hydraulic cylinder is connected to the first motor seat and is used to adjust the height of the inner support clamp.

[0016] Furthermore, the transmission box is equipped with a partition, and one end of the support arm is fixedly connected to a rotating shaft. The rotating shaft is rotatably mounted on the side wall and the partition of the transmission box, and the central axis of the rotating shaft is collinear with the central axis of the contoured arc at the lower end of the polishing block. One end of the rotating shaft extends out of the partition and is connected to a gear. A rack that meshes with multiple gears is slidably connected inside the transmission box. A second motor base is provided on the upper part of the transmission box. A second motor is installed on one side of the second motor base. A turntable is installed on the output shaft of the second motor. An eccentric shaft is provided on the turntable. A rocker arm is hinged on the eccentric shaft. The other end of the rocker arm is hinged to the rack.

[0017] The beneficial effects of this invention are: 1) By setting up multiple polishing stations and clamping multiple bearing inner rings on the inner support fixture of each polishing station, the present invention reduces the clamping frequency during the polishing of bearing inner rings and improves the polishing efficiency of the outer raceway of bearing inner rings; in addition, the multiple polishing stations adopt a parallel and alternating "polishing-loading and unloading" operation mode, which greatly reduces the waiting time and further improves the work efficiency.

[0018] 2) The inner support clamp adopts an adjustable structure, which can tighten or loosen the locking nut according to the size of the bearing inner ring to adjust the support position of the inner support plate. It is suitable for supporting bearing inner rings of different sizes during polishing, thus enhancing the versatility of the inner support clamp.

[0019] 3) By setting an adjustable tightening screw on the locking screw sleeve and setting a clamping plate at the end of the tightening screw, the positioning end plate and the clamping plate work together to limit the displacement of the bearing inner ring in the spindle axis, thus ensuring the stability of the bearing inner ring during polishing.

[0020] 4) An installation groove is provided at the end of the support arm. The polishing block is placed in the installation groove, and a pressure cap is provided on the upper part of the installation groove. An adjusting bolt is provided on the upper part of the pressure cap, and a sliding plate is provided below the adjusting bolt. A second spring is provided between the sliding plate and the polishing block. By rotating the adjusting bolt, the position of the sliding plate in the installation groove is adjusted, thereby adjusting the compression of the second spring after the polishing block contacts the inner ring of the bearing, and thus adjusting the pressure of the polishing block on the inner ring of the bearing, thereby realizing the adjustment of the polishing force of the inner ring of the bearing.

[0021] 5) A support mechanism is set on the worktable to prevent the inner support fixture from deforming due to the pressure of the polishing mechanism. A brush is set inside the support mechanism to facilitate the real-time cleaning of the grinding debris generated during the polishing of the bearing inner ring, thus ensuring the polishing effect of the bearing inner ring.

[0022] 6) A rotating shaft is installed at one end of the support arm, and a gear is installed at the end of the rotating shaft. A rack is installed inside the transmission box. When the second motor rotates, it drives the rocker arm to swing through the turntable. The rocker arm drives the rack to reciprocate in the transmission box, and then drives the rotating shaft to reciprocate in both directions through the gear. When the rotating shaft rotates, it drives the polishing block to swing in the outer raceway of the inner ring of the bearing through the support arm. This swinging polishing method allows the polishing block to cover a larger area of ​​the outer raceway, eliminating the polishing dead corners in the arc transition area at both ends of the raceway, ensuring that all parts of the outer raceway can be polished evenly and fully, and greatly improving the polishing effect of the outer raceway of the inner ring of the bearing. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of a bearing inner ring outer raceway polishing device according to the present invention.

[0024] Figure 2 This is a schematic diagram of the internal support clamp structure.

[0025] Figure 3 This is a schematic diagram showing the connection between the positioning end plate and the inner support plate in the inner support fixture.

[0026] Figure 4 This is a schematic diagram of the locking nut structure.

[0027] Figure 5 This is a schematic diagram of the support structure.

[0028] Figure 6 This is a schematic diagram of one side of the polishing mechanism.

[0029] Figure 7 This is a schematic diagram of the other side of the polishing mechanism.

[0030] Figure 8 This is a schematic diagram of the internal structure of the transmission box.

[0031] Figure 9 This is a partial sectional view of the outrigger.

[0032] In the picture: 1. Workbench; 11. Guardboard; 12. Top plate; 2. Internal support clamp; 21. Main spindle; 22. Sliding bushing; 23. Support rod; 24. Internal support plate; 25. Fixed bushing; 26. Connecting rod; 27. First spring; 28. Positioning end plate; 29. ​​Guide groove; 210. Guide bolt; 211. Locking nut; 212. Slide groove; 213. Slide seat; 214. Tightening screw; 215. Clamping plate; 216. End cover; 217. First motor base; 218. First motor; 219. First hydraulic cylinder; 3. Polishing mechanism; 31. Transmission box; 32. Partition plate; 33. Support arm; 34. Polishing block; 35. Second spring; 36. Pressure cover; 37. Slide plate; 38. Adjusting bolt; 39. Rotating shaft; 310. Gear; 311. Second motor; 312. Turntable; 313. Eccentric shaft; 314. Rocker arm; 315. Rack; 316. Slider; 317. Guide rail; 318. Second hydraulic cylinder; 4. Support mechanism; 41. Support frame; 42. Support roller; 43. Brush; 44. Track. Detailed Implementation

[0033] The following will be combined with the appendix Figures 1-9 The technical solutions in the embodiments of the present invention are clearly and completely described herein. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0034] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0035] like Figure 1As shown, a bearing inner ring outer raceway polishing device includes a worktable 1, an inner support fixture 2, and a polishing mechanism 3. The worktable 1 is provided with a guard plate 11, an operation window is provided on one side of the guard plate 11, and a top plate 12 is provided on the upper part of the guard plate 11. The guard plate 11 prevents polishing debris from splashing during the polishing of the bearing inner ring outer raceway. The worktable 1 has at least one polishing station. In this embodiment, there are two polishing stations. The two polishing stations alternately load and unload materials, which improves the efficiency of polishing bearing inner rings in mass production.

[0036] Each of the polishing stations is equipped with an inner support clamp 2 for fixing and clamping the inner ring of the bearing, such as Figure 2 As shown, a first motor 218 is provided on one side of the guard plate 11. The first motor 218 is connected to the inner support clamp 2 and is used to drive the inner support clamp 2 to rotate, thereby driving the inner ring of the bearing to rotate. Multiple bearing inner rings of the same specification are clamped on the same inner support clamp 2, realizing the simultaneous polishing operation of multiple bearing inner rings, reducing the frequency of bearing inner ring clamping, which not only reduces the labor intensity of operators, but also improves the efficiency of polishing the outer raceway of the bearing inner ring.

[0037] Polishing mechanism 3 is used for polishing the outer raceway of the bearing inner ring, such as... Figure 1 , Figure 4 As shown, the system includes a transmission box 31, with several guide rails 317 on the side wall of the guard plate 11, and several sliders 316 slidably connected to the guide rails 317 on one side of the transmission box 31. A second hydraulic cylinder 318 is provided on the top plate 12, and the telescopic rod of the second hydraulic cylinder 318 is connected to the transmission box 31. Several support arms 33 are provided on the other side of the transmission box 31, and a polishing block 34 is provided at one end of each support arm 33. The lower end of the polishing block 34 conforms to the outer raceway of the inner ring of the bearing. The distance between adjacent support arms 33 is greater than the width of the inner ring of the bearing. The system also includes several shims disposed between adjacent inner rings of the bearing to adjust the spacing between the inner rings of the bearing to accommodate the position of the polishing block 34.

[0038] When the bearing inner ring is clamped, the second hydraulic cylinder 318 retracts, driving the transmission box 31 and the support arm 33 to rise, reserving clamping space for the bearing inner ring. After the bearing inner ring and the gasket are clamped at intervals, the second hydraulic cylinder 318 extends, driving the transmission box 31 and the support arm 33 to descend until the polishing block 34 abuts against the outer raceway of the bearing inner ring. At this time, the first motor 218 is started, and the first motor 218 drives the inner support clamp 2 to rotate, thereby driving the bearing inner ring clamped on it to rotate, realizing the synchronous polishing operation of the polishing block 34 on multiple bearing inner rings.

[0039] like Figure 2 , Figure 3As shown, the inner support clamp 2 includes a main shaft 21, one end of which is connected to a first motor 218. A positioning end plate 28 is fixedly connected to the main shaft 21 to limit the initial installation position of the bearing inner ring on the main shaft 21. The positioning end plate 28 is provided with several radially arranged guide grooves 29. The main shaft 21 is also provided with a fixed bushing 25 and a sliding bushing 22. Several parallel support rods 23 are hinged to the sliding bushing 22. The other end of the support rods 23 is connected to an inner support plate 24. The inner support plate 24 is supported on the inner wall of the bearing inner ring. One end of the inner support plate 24 abuts against the positioning end plate. The end of the inner support plate 24 is threaded with a guide bolt 210, and the guide bolt 210 is intermittently disposed inside the guide groove 29. Several connecting rods 26 are hinged on the fixed bushing 25. The other end of the connecting rod 26 is hinged to the middle of the support rod 23 near the side of the fixed bushing 25. A first spring 27 is provided between the fixed bushing 25 and the sliding bushing 22. The end of the main shaft 21 is also threaded with a locking nut 211.

[0040] The inner support clamp 2 with the above structure pushes the sliding bushing 22 to slide radially on the main shaft 21 by tightening or loosening the locking nut 211. By changing the angle between the connecting rod 26 and the support rod 23, the support position of the inner support plate 24 can be adjusted. It is suitable for supporting the inner ring of bearings of different sizes during polishing, thus enhancing the versatility of the inner support clamp 2.

[0041] like Figure 2 , Figure 4 As shown, the locking sleeve 211 is provided with a tightening screw 214, and one end of the tightening screw 214 is provided with a clamping plate 215. The clamping plate 215 abuts against the outermost bearing inner ring. The positioning end plate 28 and the clamping plate 215 work together to restrict the displacement of the bearing inner ring in the axial direction of the main shaft 21, thus ensuring the stability of the bearing inner ring during polishing.

[0042] like Figure 4 As shown, the locking nut 211 is provided with several sliding grooves 212, and the end of the sliding groove 212 is provided with an end cap 216. The sliding groove 212 is slidably connected to a slide seat 213. The tightening screw 214 is threadedly connected to the slide seat 213, which facilitates the adjustment of the position of the clamping plate 215 and adapts to the positioning when clamping bearing inner rings of different sizes.

[0043] like Figure 9 As shown, the end of the support arm 33 is provided with a mounting groove, and the polishing block 34 is intermittently installed inside the mounting groove. A second spring 35 is provided inside the mounting groove, and the lower end of the second spring 35 is connected to the polishing block 34. Under the elastic force of the second spring 35, the lower surface of the polishing block 34 keeps in contact with the outer raceway of the bearing inner ring, ensuring the polishing effect of the bearing inner ring.

[0044] like Figure 9As shown, a pressure cap 36 is provided on the upper part of the mounting groove. The inner cavity of the pressure cap 36 corresponds to the size of the mounting groove. An adjusting bolt 38 is threaded onto the pressure cap 36. A sliding plate 37 is movably connected to the lower part of the adjusting bolt 38. The upper end of the second spring 35 abuts against the sliding plate 37. By rotating the adjusting bolt 38, the position of the sliding plate 37 in the mounting groove is adjusted, thereby adjusting the compression of the second spring 35 after the polishing block 34 contacts the inner ring of the bearing, and thus adjusting the pressure of the polishing block 34 on the inner ring of the bearing, thereby realizing the adjustment of the polishing force of the inner ring of the bearing.

[0045] like Figure 1 , Figure 5 As shown, the workbench 1 is provided with a support mechanism 4. The support mechanism 4 is installed at the lower part of the inner support clamp 2 and is used to support the bottom of the inner ring of the bearing to prevent the inner support clamp 2 from deforming due to the pressure of the polishing mechanism 3. The support mechanism 4 includes a support frame 41, and support rollers 42 are rotatably connected to both sides of the support frame 41. After the inner ring of the bearing is clamped in the inner support clamp 2, its lower part is supported on the support rollers 42.

[0046] like Figure 5 As shown, each of the inner walls on both sides of the support frame 41 is provided with a groove 44, and a brush 43 is detachably installed in the groove 44 for real-time cleaning of the grinding debris generated during the polishing of the bearing inner ring, thus ensuring the polishing effect of the bearing inner ring.

[0047] like Figure 1 , Figure 2 As shown, the top plate 12 is provided with a first hydraulic cylinder 219, the guard plate 11 is provided with an adjustment groove, and a first motor seat 217 is slidably connected inside the adjustment groove. The first motor 218 is installed on one side of the first motor seat 217, and the main shaft 21 passes through the first motor seat 217 and is connected to the first motor 218. The telescopic rod of the first hydraulic cylinder 219 is connected to the first motor seat 217 and is used to adjust the height of the inner support clamp 2 so as to adjust the distance between the inner support clamp 2 and the support mechanism 4 according to the size of the inner ring of the bearing.

[0048] like Figures 7-9 As shown, the transmission box 31 is provided with a partition 32 inside, and one end of the support arm 33 is fixedly connected to a rotating shaft 39. The rotating shaft 39 is rotatably mounted on the side wall of the transmission box 31 and the partition 32, and the central axis of the rotating shaft 39 is collinear with the central axis of the contoured arc at the lower end of the polishing block 34. One end of the rotating shaft 39 extends out of the partition plate 32 and is connected to a gear 310. A rack 315 that meshes with multiple gears 310 is slidably connected inside the transmission box 31. A second motor base is provided on the upper part of the transmission box 31. A second motor 311 is installed on one side of the second motor base. A turntable 312 is installed on the output shaft of the second motor 311. An eccentric shaft 313 is provided on the turntable 312. A rocker arm 314 is hinged on the eccentric shaft 313. The other end of the rocker arm 314 is hinged to the rack 315.

[0049] When the second motor 311 rotates, it drives the rocker arm 314 to swing via the turntable 312. The rocker arm 314 drives the rack 315 to reciprocate within the transmission box 31, which in turn drives the rotating shaft 39 to reciprocate in both directions via the gear 310. When the rotating shaft 39 rotates, it drives the polishing block 34 to swing within the outer raceway of the inner ring of the bearing via the support arm 33. This swinging polishing method allows the polishing block 34 to cover a larger area of ​​the outer raceway. Compared with the fixed polishing method, it effectively eliminates the polishing dead angles in the arc transition area at both ends of the raceway, ensuring that all parts of the outer raceway can be polished evenly and fully, greatly improving the polishing effect of the outer raceway of the inner ring of the bearing.

[0050] The above description is merely an example and illustration of the structure of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described, or use similar methods to replace them, as long as they do not deviate from the scope defined by the structure of the invention, and all such modifications and additions should fall within the protection scope of the present invention.

Claims

1. A polishing device for the outer raceway of a bearing inner ring, characterized in that, include: The workbench is equipped with a guard plate, an operation window on one side of the guard plate, and a top plate on the upper part of the guard plate; the workbench has at least one polishing station. Each of the polishing stations is equipped with an inner support clamp for fixing and clamping the inner ring of the bearing. A first motor is provided on one side of the guard plate. The first motor is connected to the inner support clamp and is used to drive the inner support clamp to rotate, thereby driving the inner ring of the bearing to rotate. Multiple inner rings of the same specification are clamped on the same inner support clamp. A polishing mechanism for polishing the outer raceway of the inner ring of a bearing includes a transmission box, several guide rails on the side wall of the guard plate, several sliders slidably connected to the guide rails on one side of the transmission box, a second hydraulic cylinder on the top plate, and the telescopic rod of the second hydraulic cylinder connected to the transmission box; several support arms on the other side of the transmission box, with a polishing block at one end of each support arm, the lower end of which conforms to the outer raceway of the inner ring of the bearing; the distance between adjacent support arms is greater than the width of the inner ring of the bearing, and the mechanism also includes several shims disposed between adjacent inner rings of the bearing to adjust the spacing between the inner rings of the bearing to accommodate the position of the polishing block.

2. The bearing inner ring outer raceway polishing device according to claim 1, characterized in that, The inner support clamp includes a main shaft, one end of which is connected to a first motor. A positioning end plate is fixedly connected to the main shaft to limit the initial installation position of the bearing inner ring on the main shaft. The positioning end plate is provided with several radially arranged guide grooves. The main shaft is also provided with a fixed bushing and a sliding bushing. Several parallel support rods are hinged to the sliding bushing. The other end of the support rods is connected to an inner support plate, which is supported on the inner wall of the bearing inner ring. One end of the inner support plate abuts against the positioning end plate. A guide bolt is threaded to the end of the inner support plate, and the guide bolt is intermittently disposed inside the guide groove. Several connecting rods are hinged to the fixed bushing. The other end of the connecting rod is hinged to the middle of a support rod near the fixed bushing. A first spring is provided between the fixed bushing and the sliding bushing. A locking sleeve is also threaded to the end of the main shaft.

3. The bearing inner ring outer raceway polishing device according to claim 2, characterized in that, The locking nut is provided with a tightening screw, and a clamping plate is provided at one end of the tightening screw. The clamping plate abuts against the outermost bearing inner ring. The positioning end plate and the clamping plate work together to restrict the displacement of the bearing inner ring in the spindle axial direction.

4. The bearing inner ring outer raceway polishing device according to claim 3, characterized in that, The locking screw sleeve is provided with several sliding grooves, and the end of the sliding groove is provided with an end cap. A sliding seat is slidably connected inside the sliding groove, and the tightening screw is threadedly connected to the sliding seat.

5. The bearing inner ring outer raceway polishing device according to claim 1, characterized in that, The support arm end is provided with a mounting groove, and the polishing block is intermittently installed inside the mounting groove. A second spring is provided inside the mounting groove, and the lower end of the second spring is connected to the polishing block. Under the elastic force of the second spring, the lower surface of the polishing block keeps in contact with the outer raceway of the bearing inner ring.

6. The bearing inner ring outer raceway polishing device according to claim 5, characterized in that, The upper part of the mounting groove is provided with a pressure cap, the inner cavity of the pressure cap corresponds to the size of the mounting groove, the pressure cap is threaded with an adjusting bolt, the lower part of the adjusting bolt is movably connected with a sliding plate, and the upper end of the second spring abuts against the sliding plate.

7. The bearing inner ring outer raceway polishing device according to claim 1, characterized in that, The workbench is provided with a support mechanism, which is installed at the lower part of the inner support fixture to support the bottom of the inner ring of the bearing. The support mechanism includes a support frame, and support rollers are rotatably connected to both sides of the support frame. After the inner ring of the bearing is clamped in the inner support fixture, its lower part is supported on the support rollers.

8. The bearing inner ring outer raceway polishing device according to claim 7, characterized in that, Each of the inner walls on both sides of the support frame is provided with a groove, and a brush is detachably installed in the groove for real-time cleaning of the grinding debris generated during the polishing of the bearing inner ring.

9. A bearing inner ring outer raceway polishing device according to claim 7, characterized in that, The top plate is equipped with a first hydraulic cylinder, and the guard plate is equipped with an adjustment groove. A first motor base is slidably connected inside the adjustment groove. The first motor is installed on one side of the first motor base, and the main shaft passes through the first motor base and is connected to the first motor. The telescopic rod of the first hydraulic cylinder is connected to the first motor base and is used to adjust the height of the inner support clamp.

10. A bearing inner ring outer raceway polishing device according to any one of claims 1-9, characterized in that, The transmission box is equipped with a partition, and one end of the support arm is fixedly connected to a rotating shaft. The rotating shaft is rotatably mounted on the side wall and the partition of the transmission box, and the central axis of the rotating shaft is collinear with the central axis of the contoured arc at the lower end of the polishing block. One end of the rotating shaft extends out of the partition and is connected to a gear. A rack that meshes with multiple gears is slidably connected inside the transmission box. A second motor base is provided on the upper part of the transmission box. A second motor is installed on one side of the second motor base. A turntable is installed on the output shaft of the second motor. An eccentric shaft is provided on the turntable. A rocker arm is hinged on the eccentric shaft. The other end of the rocker arm is hinged to the rack.

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