Grinding device for superfinishing of bearing ring and grinding process of grinding device

Abstract

The invention relates to the technical field of bearing ring superfinishing equipment, and discloses a grinding device for bearing ring superfinishing and a grinding process thereof.The grinding device comprises a swing arm, one end of the swing arm is fixedly connected with a fixing base, the inner side of the fixing base is slidably connected with a clamping block, and an oilstone is arranged on the inner side of the clamping block; and a pressing block for fixing the oilstone is movably arranged on one side of the clamping block. In the process that a clamping block drives a fastening gear and an adjusting gear to synchronously move in a transmission mode, the fastening gear and the adjusting gear make contact with a first toothed plate and a second toothed plate correspondingly in sequence, and therefore the length, stretching out of the clamping block, of an oilstone is adjusted under the condition that a pressing block loosens clamping and locking of the oilstone; and in the process that the clamping blocks move towards the outer side of the fixing base, the oilstone is clamped and fixed, and the adjusting rod is moved away in sequence and continuously, so that the service life of the grinding device is prolonged, and the grinding quality of the bearing ring is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of super-finishing equipment for bearing rings, and particularly relates to a grinding device and a grinding process for super-finishing bearing rings. Background Art

[0002] During the processing of bearing rings, it is necessary to use a bearing super-finishing grinder to grind the arc surface or groove of the preliminarily polished bearing ring. The existing bearing super-finishing grinder includes a bearing clamping device. The bearing clamping device clamps and fixes the bearing ring to be polished and drives the bearing ring to rotate. The driving assembly drives the swinging mechanism to move to the grinding position. The swinging mechanism drives the oilstone to abut against the bearing ring and performs high-frequency swinging to complete grinding. The swinging mechanism includes a swing arm. One side of the swing arm is fixedly provided with an oilstone clamp. An oilstone pressing block is movably arranged in the oilstone clamp. The pressing block is pressed against one side of the oilstone by a fastening screw to fix the oilstone. The swing of the swing arm drives the oilstone clamp to swing. A cylinder is fixedly arranged on the swing arm. The output end of the cylinder abuts against the top of the oilstone through a connecting rod, so that the oilstone remains in tight contact with the bearing while swinging.

[0003] However, during the processing of bearing rings by the existing bearing super-finishing grinder, as a consumable, the oilstone wears and consumes. When the cylinder drives the connecting rod to push the oilstone to abut tightly against the bearing ring, the oilstone needs to overcome the frictional force between it and the pressing block and move relative to the pressing block and the oilstone clamp. After long-term use, the contact surfaces of the oilstone clamp, the pressing block and the oilstone wear and consume and it is difficult to maintain close contact. The possibility of relative displacement between the oilstone and the oilstone clamp and the pressing block increases during the high-frequency swinging process, resulting in grinding scratches on the surfaces of some bearing rings, increasing the rework rate of the produced bearing rings that need to be re-ground, affecting the grinding quality, and even possibly the phenomenon that the oilstone is not firmly clamped and falls off, resulting in waste of consumables. Summary of the Invention

[0004] The present application provides a grinding device and a grinding process for super-finishing bearing rings, which have the advantage of avoiding the wear of the oilstone on the clamping block and the pressing block while ensuring that the clamping length of the oilstone is within the rated range, so as to solve the problem of the decrease in clamping stability after long-term use caused by the wear of the oilstone on the pressing block.

[0005] To achieve the above object, the present application adopts the following technical solution: A grinding device for super-finishing bearing rings includes a swing arm. One end of the swing arm is fixedly connected with a fixed seat. A clamping block is slidably connected inside the fixed seat. An oilstone is arranged inside the clamping block. A pressing block for fixing the oilstone is movably arranged on one side of the clamping block. An adjusting rod is arranged on the other side of the clamping block. A locking mechanism is arranged on one side of the clamping block. An adjusting mechanism is arranged on one side of the clamping block. The locking mechanism can drive the pressing block to abut against the oilstone and maintain the abutting state when the clamping block moves relative to the fixed seat. The adjusting mechanism can cooperate with the clamping block to drive the adjusting rod to move. After the clamping block moves out of the fixed seat and cooperates with the pressing block to clamp the oilstone, the adjusting mechanism can drive the adjusting rod to rotate so that the adjusting rod moves away from the end of the oilstone for grinding. When the clamping block resets, the adjusting mechanism can drive the adjusting rod to rotate and reset, and the adjusting rod can limit the length of the part of the oilstone extending out of the clamping block.

[0006] Furthermore, the locking mechanism includes a pressing rod. The clamping block is threadedly sleeved with the pressing rod. The pressing block is rotatably clamped with the pressing rod. One end of the pressing rod is fixedly sleeved with a fastening gear. One side of the inner wall of the fixed seat is fixedly connected with a first toothed plate, and the first toothed plate and the fastening gear can mesh with each other.

[0007] Through the relative movement between the fastening gear and the first toothed plate, when the clamping block moves, it drives the pressing rod to rotate, thereby changing the pressing state of the pressing block on the oilstone.

[0008] Furthermore, the adjusting mechanism includes a support shaft. The support shaft is rotatably connected with the clamping block. An adjusting rod is fixedly sleeved at a position near one end of the shaft body of the support shaft. One end of the support shaft is fixedly sleeved with an adjusting gear. One side of the inner wall of the fixed seat is fixedly connected with a second toothed plate, and the second toothed plate and the adjusting gear can mesh with each other.

[0009] Through the movement of the adjusting gear relative to the second toothed plate, after the clamping block completes the action of clamping the oilstone, the adjusting gear rotates to drive the adjusting rod to rotate coaxially, thereby driving the adjusting rod to move away after completing the adjustment action of adjusting the length of the oilstone extending out of the clamping block, facilitating the subsequent extension and grinding of the oilstone.

[0010] Furthermore, the distance from the second toothed plate to the bottom of the fixed seat is shorter than the distance from the first toothed plate to the bottom of the fixed seat. One side of the clamping block is fixedly connected with a torsion spring. One end of the torsion spring is fixedly connected with the adjusting rod. A stop block is fixedly arranged on one side of the clamping block.

[0011] After the adjusting gear disengages from the second toothed plate, the torsion spring cooperates with the stop block to drive the adjusting rod to rotate and reset. The reset adjusting rod can limit the length of the oilstone extending out of the clamping block.

[0012] The beneficial effects of the present invention are as follows: A grinding device and its grinding process for super-finishing of bearing rings provided by the present application. By blocking one end of the oilstone with an adjusting rod, the length of the oilstone extending out of the clamping block is restricted, so as to complete the adjustment of the clamping length of the oilstone under the condition that the pressing block removes the clamping and fixing of the oilstone. It is convenient to ensure that the length of the end of the oilstone used for grinding from the clamping point is within the rated range when the oilstone grinds the bearing ring. When the clamping block moves, the clamping block cooperates with the fastening gear, the first toothed plate and the pressing rod to complete the clamping and fixing of the oilstone by the pressing block, ensuring a good posture of the oilstone during grinding. And during the locking process of the oilstone, the adjusting rod always ensures that the length of the oilstone extending out of the clamping block is fixed and moves away during the subsequent process of the oilstone extending out of the fixing seat, achieving the effect of being able to adjust the length of the oilstone extending out of the clamping block while avoiding clamping wear of the pressing block and the clamping block by the oilstone, improving the service life of the grinding device, and ensuring the stability of the grinding process of the oilstone on the bearing ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings: Figure 1 Schematic diagram of the overall structure of the present invention; Figure 2 Schematic diagram of the structure at the connecting rod of the present invention; Figure 3 Schematic diagram of the structure at the first toothed plate of the present invention; Figure 4 Schematic diagram of the structure at the second toothed plate of the present invention; Figure 5 Schematic cross-sectional view of the structure at the clamping block of the present invention; Figure 6 For the present invention Figure 5 Enlarged view of the structure at A in; Figure 7 Schematic diagram of the structure at the limiting plate of the present invention; Figure 8 For the present invention Figure 7 Enlarged schematic view of the structure at B in; Figure 9 Schematic cross-sectional view of the structure at the pressing block of the present invention.

[0014] In the figure: 1 - fixed seat, 2 - clamping block, 3 - guide rod, 4 - abutting rod, 5 - fastening gear, 6 - first toothed plate, 7 - oilstone, 8 - connecting rod, 9 - adjusting rod, 901 - rotating rod, 902 - abutting rod, 10 - support shaft, 11 - adjusting gear, 12 - second toothed plate, 13 - stopper, 14 - limiting plate, 15 - limiting rod, 16 - pressing block, 17 - fixed rod, 18 - sliding rod, 19 - adjusting spring, 20 - adjusting screw, 21 - torsion spring, 22 - rotating plate, 23 - sliding plate, 24 - contact switch, 25 - friction plate, 26 - electromagnet, 27 - permanent magnet, 28 - reset spring, 29 - swing arm, 30 - cylinder, 31 - connecting plate. Detailed implementation manner

[0015] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0016] Embodiment 1, as Figures 1-6 , a grinding device for the super-finishing of bearing rings, including a swing arm 29, the swing arm 29 is fixedly installed on the swinging mechanism of the grinding device through a connecting arm, one end of the swing arm 29 is fixedly connected with a fixed seat 1, the inner side of the fixed seat 1 is slidably connected with a clamping block 2, both sides of the inner wall of the fixed seat 1 are fixedly connected with guide rods 3, the guide rods 3 are slidably sleeved with the clamping block 2, an oilstone 7 is arranged inside the clamping block 2, and the clamping block 2 is used to drive the oilstone 7 to move. One side of the swing arm 29 is fixedly connected with a cylinder 30, the output end of the cylinder 30 is fixedly connected with a connecting rod 8, and one end of the connecting rod 8 is fixedly connected with the clamping block 2. When grinding the bearing ring, the swing arm 29 drives the clamping block 2 to swing, the clamping block 2 drives the oilstone 7 to swing, and at the same time the cylinder 30 drives the connecting rod 8 to move, and the connecting rod 8 cooperates with the clamping block 2 to drive the oilstone 7 to abut against the bearing ring for grinding.

[0017] Refer to Figure 6, a pressing block 16 for fixing the oilstone 7 is movably arranged on one side of the clamping block 2. The side of the pressing block 16 close to the oilstone 7 is set as an elastic surface to ensure stable clamping. A tightening rod 4 is threadedly sleeved on one side of the clamping block 2. The tightening rod 4 is rotationally clamped with the pressing block 16. The tightening rod 4 can drive the pressing block 16 to move while rotating relative to the pressing block 16. A tightening gear 5 is fixedly sleeved at one end of the tightening rod 4 located outside the clamping block 2. One side of the inner wall of the fixed seat 1 is fixedly connected with a first toothed plate 6. The first toothed plate 6 can be meshed with the tightening gear 5. When grinding is required, the connecting rod 8 drives the clamping block 2 to move relative to the fixed seat 1, so that the oilstone 7 located at the bottom of the clamping block 2 extends out of the fixed seat 1. The clamping block 2 drives the tightening rod 4 to move. The tightening rod 4 drives the tightening gear 5 to move relative to the first toothed plate 6. The first toothed plate 6 drives the tightening gear 5 to rotate. The tightening gear 5 drives the tightening rod 4 to rotate, so that the tightening rod 4 drives the pressing block 16 to move and approach the oilstone 7, so that the pressing block 16 presses against the oilstone 7 and locks the pressing block 16 by using the threaded engagement state between the tightening rod 4 and the clamping block 2, thereby completing the relative fixation between the clamping block 2 and the oilstone 7.

[0018] A support shaft 10 is rotatably connected to one side of the clamping block 2. A regulating rod 9 is fixedly sleeved at a position close to one end of the shaft body of the support shaft 10. The regulating rod 9 is used to adjust the length of the oilstone 7 extending out of the clamping block 2 to ensure that the length of the oilstone 7 between the clamping block 2 and the bearing race is within the rated range. The regulating rod 9 is L-shaped and the top of the horizontal part is set as an abutting arc surface. The radius of the abutting arc surface is adapted to the rotation radius of the regulating rod 9 to ensure effective contact between the regulating rod 9 and the grinding end of the oilstone 7. One end of the support shaft 10 is fixedly sleeved with a regulating gear 11. Refer to Figure 4 , one side of the inner wall of the fixed seat 1 is fixedly connected with a second toothed plate 12. The second toothed plate 12 can be meshed with the regulating gear 11. The height of the second toothed plate 12 is lower than that of the first toothed plate 6, that is, the second toothed plate 12 is closer to the bottom opening of the fixed seat 1 relative to the first toothed plate 6. When the clamping block 2 drives the oilstone 7 to extend out of the fixed seat 1, the fixing action of the oilstone 7 is carried out first, and the regulating rod 9 moves away from the bottom of the oilstone 7 relatively later. One side of the clamping block 2 is fixedly connected with a torsion spring 21. One end of the torsion spring 21 is fixedly connected with the regulating rod 9. A stop block 13 is fixedly arranged on one side of the clamping block 2.

[0019] When grinding is required, the clamping block 2 moves. At this time, one end of the adjusting rod 9 is located at the bottom of the clamping block 2, and the end of the oilstone 7 for grinding rests on the adjusting rod 9 under the action of gravity. The clamping block 2 cooperates with the support shaft 10 to drive the adjusting rod 9 to move. While keeping the adjusting rod 9 and the clamping block 2 moving synchronously, that is, while the length of the oilstone 7 between the adjusting rod 9 and the clamping block 2 remains unchanged, the fastening gear 5 cooperates with the first toothed plate 6 and the pressing rod 4 to drive the pressing block 16 close to the oilstone 7, and the fastening gear 5 disengages from the engagement with the first toothed plate 6 to complete the relative locking between the oilstone 7 and the clamping block 2. Then the adjusting gear 11 moves to engage with the second toothed plate 12, and the clamping block 2 continues to move, and the second toothed plate 12 drives the adjusting gear 11 to rotate.

[0020] The adjusting gear 11 drives the support shaft 10 to rotate, and the support shaft 10 drives the adjusting rod 9 to rotate. Without causing additional wear to the oilstone 7, the adjusting rod 9 is moved away from the bottom of the oilstone 7 to facilitate the subsequent contact between the oilstone 7 and the bearing race. Until the oilstone 7 extends out of the fixed seat 1, the adjusting gear 11 remains engaged with the second toothed plate 12. After grinding is completed, the distance that the oilstone 7 extends out of the clamping block 2 decreases due to grinding wear. The clamping block 2 rises and resets, the adjusting gear 11 disengages from the engagement with the second toothed plate 12, and the torsion spring 21 drives the adjusting rod 9 to rotate. The rod body of the adjusting rod 9 abuts against the stop block 13, and cooperates with the torsion spring 21 to rotate the adjusting rod 9 back to its original position. The clamping block 2 drives the oilstone 7 to continue to move upward until the fastening gear 5 re-engages with the first toothed plate 6, and the first toothed plate 6 drives the fastening gear 5 to rotate, thereby driving the pressing block 16 to reset and removing the fixation on the oilstone 7.

[0021] The oilstone 7 moves under the action of gravity, and the end for grinding rests on the adjusting rod 9 again, so that while ensuring that both the pressing block 16 and the clamping block 2 are free of additional friction, the oilstone 7 extends out of the clamping block 2 by a rated length relative to the clamping block 2. That is, while avoiding additional wear of the oilstone 7 on the pressing block 16 and the clamping block 2, it ensures that the length from the end of the oilstone 7 for grinding to the clamping part is within the rated range, avoiding excessive distance from the clamping part to the contact between the oilstone 7 and the bearing race, and preventing shaking or deformation during the pressing and swinging process, ensuring the grinding accuracy of the bearing race, and improving the service life of the grinding device.

[0022] Embodiment 2, as Figures 4-9, on the basis of the first embodiment, the adjusting rod 9 includes a movable rod 901 and an abutting rod 902. The abutting rod 902 is used to contact the oilstone 7 to limit the length of the oilstone 7 extending out of the clamping block 2. The movable rod 901 is fixedly sleeved with the support shaft 10. Two limiting rods 15 are fixedly arranged on one side of the abutting rod 902. The number of the limiting rods 15 is two, and the two limiting rods 15 are symmetrically arranged about the center line of the abutting rod 902. The limiting rod 15 is in a T shape and is slidably connected with the movable rod 901. The limiting rod 15 can slide relative to the movable rod 901 without detaching from the movable rod 901. A adjusting screw 20 is threadedly sleeved at the middle position of the bottom surface of the movable rod 901. The adjusting screw 20 is used to adjust the distance between the movable rod 901 and the abutting rod 902. The adjusting screw 20 is movably sleeved with the abutting rod 902. The top surface of the movable rod 901 is set as an abutting arc surface. When using oilstones 7 of different materials, rotate the adjusting screw 20 to change the moving distance of the abutting rod 902 relative to the movable rod 901, so as to adjust the distance between the movable rod 901 and the clamping block 2, ensure that the clamping length of oilstones 7 of different materials is within the rated range, and improve the flexibility of the use of the grinding device.

[0023] One side of the clamping block 2 is fixedly connected with a connecting plate 31. The connecting plate 31 is in an inverted L shape. One side of the connecting plate 31 is fixedly connected with a rotating plate 22 through a bolt. One side of the rotating plate 22 is fixedly connected with a fixing rod 17. A sliding rod 18 is slidably sleeved inside the fixing rod 17. The sliding rod 18 is in a T shape and can slide relative to the fixing rod 17 without detaching from the fixing rod 17. An adjusting spring 19 is movably sleeved inside the fixing rod 17. The adjusting spring 19 pushes the sliding rod 18 to extend out of the fixing rod 17. The position of the sliding rod 18 corresponds to the position of the oilstone 7. After the clamping block 2 removes the locking of the oilstone 7, the sliding rod 18 pushes the oilstone 7 to contact the adjusting rod 9 to ensure the stability of the process of adjusting the clamping length of the oilstone 7. When installing the oilstone 7, loosen the bolt fixing the rotating plate 22, rotate the rotating plate 22 to move the sliding rod 18 away from the top of the clamping block, insert the oilstone 7 into the inside of the clamping block 2 when the clamping block 2 is in the state of moving to the top, the bottom of the oilstone 7 is placed on the adjusting rod 9, and there is no need for manual additional adjustment of the clamping length and clamping fixation of the oilstone 7, which improves the convenience and accuracy of the installation of the oilstone 7. After the installation of the oilstone 7 is completed, rotate the rotating plate 22 to reset.

[0024] Example three, as Figures 4-8, a friction plate 25 is slidably sleeved on one side of the connecting plate 31. An electromagnet 26 is fixedly connected to one side of the connecting plate 31. A permanent magnet 27 is fixedly arranged inside the friction plate 25. The position of the permanent magnet 27 corresponds to the position of the electromagnet 26 and the force between them is a repulsive force. A contact switch 24 is fixedly arranged on one side of one of the two guide rods 3. The contact switch 24 is electrically connected to the electromagnet 26. A sliding plate 23 is fixedly connected to one side of the sliding rod 18. The sliding plate 23 is slidably sleeved on the fixed rod 17. A limiting plate 14 is fixedly connected to one side of the sliding plate 23. A return spring 28 is fixedly connected to both the top and bottom of one side of the friction plate 25.

[0025] When grinding is required, after the clamping block 2 clamps the oilstone 7, the clamping block 2 continues to move and contacts the contact switch 24. The contact switch 24 controls the electromagnet 26 to start. The electromagnet 26 cooperates with the permanent magnet 27 to drive the friction plate 25 to fit with the limiting plate 14. The friction between the friction plate 25 and the limiting plate 14 restricts the movement of the sliding rod 18 relative to the clamping block 2, making the position of the sliding rod 18 fixed relative to the position of the oilstone 7, providing an axial supporting force during the subsequent grinding process, thereby dispersing the force required for the pressing rod 4 to clamp the oilstone 7 to complete grinding, avoiding clamping stress concentration, and further improving the reliability of the use of this grinding device.

[0026] A grinding process for ultra-precision machining of bearing rings includes the following steps: S1: Rotate the rotating plate 22 to move it away from the top of the clamping block 2, insert the oilstone 7 into the inner side of the clamping block 2, and rotate the rotating plate 22 back to its original position. S2: The air cylinder 30 cooperates with the connecting rod 8 to drive the clamping block 2 to move. The adjusting rod 9 moves synchronously with the clamping block 2. The fastening gear 5 cooperates with the first toothed plate 6 and the pressing rod 4 to drive the pressing block 16 to move and press against the oilstone 7 to complete the clamping and fixing of the oilstone 7. S3: The clamping block 2 continues to move until it contacts the contact switch 24. The electromagnet 26 cooperates with the permanent magnet 27 to drive the friction plate 25 to press against the limiting plate 14, restricting the movement of the sliding rod 18 relative to the clamping block 2 and providing support for one end of the oilstone 7. S4: The clamping block 2 drives the support shaft 10 to move, and cooperates with the adjusting gear 11 and the second toothed plate 12 to drive the adjusting rod 9 to rotate, so that the adjusting rod 9 moves away from the end of the oilstone 7 for grinding. S5: The clamping block 2 drives the oilstone 7 to extend out of the fixed seat 1 and press against the bearing ring. The swing arm 29 drives the oilstone 7 to swing. The air cylinder 30 provides pressure compensation for the oilstone 7 during the grinding process to complete a single grinding. S6: The air cylinder 30 drives the clamping block 2 to move back to its original position. In the case where the pressing block 16 removes the fixation of the oilstone 7, the sliding rod 18 drives the oilstone 7 to move, so that one end of the oilstone 7 extends out of the clamping block 2 and presses against the reset adjusting rod 9 to complete the length compensation of the worn part of the oilstone 7.

[0027] The foregoing description of the disclosed embodiments enables those skilled in the art to practice or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A grinding device for superfinishing a bearing ring, characterized in that: It comprises a swing arm (29), one end of the swing arm (29) is fixedly connected to a fixing seat (1), the inner side of the fixing seat (1) is slidably connected to a clamping block (2), an oil stone (7) is arranged on the inner side of the clamping block (2), a pressure block (16) for fixing the oil stone (7) is movably arranged on one side of the clamping block (2), an adjusting rod (9) is arranged on the other side of the clamping block (2), a locking mechanism is arranged on one side of the clamping block (2), and an adjusting mechanism is arranged on one side of the clamping block (2); The locking mechanism can drive the pressing block (16) to press against the oil stone (7) and maintain the pressed state when the clamping block (2) moves relative to the fixed seat (1); the adjusting mechanism can cooperate with the clamping block (2) to drive the adjusting rod (9) to move; after the clamping block (2) moves outward from the fixed seat (1) and cooperates with the pressing block (16) to clamp the oil stone (7), the adjusting mechanism can drive the adjusting rod (9) to rotate so that the adjusting rod (9) is moved away from the end of the oil stone (7) used for grinding; when the clamping block (2) is reset, the adjusting mechanism can drive the adjusting rod (9) to rotate and reset; the adjusting rod (9) can limit the length of the oil stone (7) extending out of the clamping block (2).

2. A grinding device for superfinishing a bearing ring according to claim 1, characterized in that: The locking mechanism comprises a clamping rod (4), the clamping block (2) is threadedly sleeved with the clamping rod (4), the pressing block (16) is rotatably clamped with the clamping rod (4), one end of the clamping rod (4) is fixedly sleeved with a fastening gear (5), one side of the inner wall of the fixing seat (1) is fixedly connected with a first tooth plate (6), and the first tooth plate (6) and the fastening gear (5) can mesh with each other.

3. A grinding device for superfinishing a bearing ring according to claim 2, characterized in that: The adjustment mechanism comprises a support shaft (10), the support shaft (10) being rotatably connected to the clamping block (2), an adjustment rod (9) being fixedly sleeved near one end of the support shaft (10), an adjustment gear (11) being fixedly sleeved at one end of the support shaft (10), a second tooth plate (12) being fixedly connected to one side of the inner wall of the fixed seat (1), and the second tooth plate (12) and the adjustment gear (11) being capable of meshing with each other.

4. A grinding device for superfinishing a bearing ring according to claim 3, characterized in that: The distance between the second tooth plate (12) and the bottom of the fixed seat (1) is shorter than the distance between the first tooth plate (6) and the bottom of the fixed seat (1); a torsion spring (21) is fixedly connected to one side of the clamping block (2); one end of the torsion spring (21) is fixedly connected to the adjusting rod (9); and a stopper (13) is fixedly provided on one side of the clamping block (2).

5. A grinding device for superfinishing a bearing ring according to claim 4, characterized in that: The adjusting rod (9) comprises a movable rod (901) and an abutting rod (902); the movable rod (901) is fixedly sleeved with the support shaft (10); two limiting rods (15) are fixedly provided on one side of the abutting rod (902); the limiting rods (15) are T-shaped and slidably connected to the movable rod (901); an adjusting screw (20) is threadedly sleeved at a middle position of the bottom surface of the movable rod (901); the adjusting screw (20) is movably sleeved with the abutting rod (902).

6. A grinding device for superfinishing a bearing ring according to claim 3, characterized in that: One side of the clamping block (2) is fixedly connected to a connecting plate (31), the connecting plate (31) is in an inverted L shape, one side of the connecting plate (31) is fixedly connected to a rotating plate (22) via bolts, one side of the rotating plate (22) is fixedly connected to a fixing rod (17), the inner side of the fixing rod (17) is slidably sleeved with a sliding rod (18), and the inner side of the fixing rod (17) is movably sleeved with an adjusting spring (19).

7. A grinding device for superfinishing a bearing ring according to claim 6, characterized in that: A friction plate (25) is slidably sleeved on one side of the connecting plate (31), an electromagnet (26) is fixedly connected to one side of the connecting plate (31), a permanent magnet (27) is fixedly arranged inside the friction plate (25), the position of the permanent magnet (27) corresponds to the position of the electromagnet (26), and the acting force between them is a repulsive force, a sliding plate (23) is fixedly connected to one side of the sliding rod (18), and a limiting plate (14) is fixedly connected to one side of the sliding plate (23).

8. A grinding device for superfinishing a bearing ring according to claim 7, characterized in that: Guide rods (3) are fixedly connected to both sides of the inner wall of the fixing seat (1); a contact switch (24) is fixedly provided on one side of one of the two guide rods (3); the contact switch (24) is electrically connected to the electromagnet (26); and a return spring (28) is fixedly connected to the top and bottom of one side of the friction plate (25).

9. A grinding device for superfinishing a bearing ring according to claim 8, characterized in that: A cylinder (30) is fixedly connected to one side of the swing arm (29), a connecting rod (8) is fixedly connected to the output end of the cylinder (30), and one end of the connecting rod (8) is fixedly connected to the clamping block (2).

10. A grinding process for superfinishing a bearing ring, characterized in that: Grinding a bearing ring using the grinding device for superfinishing a bearing ring as claimed in claim 9 comprises the following steps: S1: Rotate the rotating plate (22) away from the top of the clamping block (2), insert the oilstone (7) into the inner side of the clamping block (2), and rotate the rotating plate (22) to reset; S2: The cylinder (30) cooperates with the connecting rod (8) to drive the clamping block (2) to move, the adjusting rod (9) and the clamping block (2) move synchronously, and the fastening gear (5) cooperates with the No. 1 gear plate (6) and the clamping rod (4) to drive the pressing block (16) to move against the oilstone (7), thereby completing the clamping and fixing of the oilstone (7); S3: The clamping block (2) continues to move until it contacts the contact switch (24), and the electromagnet (26) cooperates with the permanent magnet (27) to drive the friction plate (25) to press against the limit plate (14), thereby limiting the movement of the sliding rod (18) relative to the clamping block (2) and providing support for one end of the oilstone (7); S4: The clamping block (2) drives the support shaft (10) to move, and cooperates with the adjusting gear (11) and the second tooth plate (12) to drive the adjusting rod (9) to rotate, so that the adjusting rod (9) is moved away from the end of the oilstone (7) used for grinding; S5: The clamping block (2) drives the oil stone (7) to extend out of the fixed seat (1) and abut against the bearing ring, the swing arm (29) drives the oil stone (7) to swing, and the cylinder (30) provides pressure compensation for the oil stone (7) during the grinding process, thereby completing a single grinding; S6: The cylinder (30) drives the clamping block (2) to move and reset. When the pressing block (16) is removed from fixing the oilstone (7), the sliding rod (18) drives the oilstone (7) to move, so that one end of the oilstone (7) extends out of the clamping block (2) and abuts against the reset adjusting rod (9), thereby completing the length compensation of the lost part of the oilstone (7).

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