A device for grinding the end face of a motor bearing ring

Abstract

The present invention discloses a device for grinding the end face of a motor bearing race, belonging to the technical field of grinding the end face of bearing races. The device for grinding the end face of a motor bearing race includes a main body. An internal movable cavity is provided at the top of the main body, and a grinding mechanism is installed in the internal movable cavity. The grinding mechanism includes three connecting rods, and the other ends of the three connecting rods are all installed with fourth gears. A turning surface mechanism is installed on the top of each of the three fourth gears. The turning surface mechanism includes a plurality of connecting columns installed on the outer wall of the corresponding connecting shaft, and a fixed ring is rotatably connected between every two connecting columns. By designing a flipping mechanism, a driving mechanism, a grinding mechanism and a turning surface mechanism, the present invention can grind both sides of the bearing race during the grinding process, and at the same time ensure that the bearing race can rotate while performing transverse grinding. In addition, the placed race is turned over regularly during the grinding process to reduce grinding at the same position and increase heat dissipation.

Description

Technical Field

[0001] The present invention belongs to the technical field of end face grinding of bearing rings, and particularly relates to a device for grinding the end face of a motor bearing ring. Background Art

[0002] The end face grinding of the motor bearing ring is one of the important technological processes in motor manufacturing, mainly used to improve the accuracy and surface quality of the end face of the bearing ring. As a power device widely used in modern industry, the motor's bearings, as key components, directly affect the operating performance and service life of the motor. The end face of the bearing ring, as one of the supporting surfaces for the bearing operation, needs to have high flatness, smoothness, and dimensional accuracy to ensure the stable operation and low friction performance of the bearing. With the continuous progress of motor technology, the requirements for the quality of the end face of the bearing ring are also getting higher and higher.

[0003] The bearing ring is a component that supports and fixes the rolling elements of the bearing and is an important rolling device during the movement of the motor. When the existing device for grinding the end face of the motor bearing ring is in use, the entire device usually rotates to drive the bearing ring to rotate, resulting in insufficient fineness of the grinding of the bearing ring and reducing the grinding quality. At the same time, when the bearing ring is being ground, it always maintains a single rotation speed, causing local temperature increase at the end face of the bearing ring during grinding. As a result, the excessive temperature will affect the flatness of the bearing end face and its use in the motor. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the above-mentioned disadvantages of the prior art and provide a device for grinding the end face of a motor bearing ring.

[0005] The technical solution adopted to solve the above technical problem is: a device for grinding the end face of a motor bearing ring, including a main body. An internal activity cavity is provided at the top of the main body, and a grinding mechanism is installed in the internal activity cavity for driving the bearing ring to rotate for grinding.

[0006] The grinding mechanism includes three connecting rods, and a fourth gear is installed at the other end of each of the three connecting rods. The corresponding fourth gear is driven to rotate by the three connecting rods. A connecting shaft is installed at the eccentric position on the surface of each of the three fourth gears, and a turning surface mechanism is installed on the top of each of the three fourth gears for grinding the bearing ring from the inside to the outside.

[0007] The turning surface mechanism includes a plurality of connecting columns installed on the outer wall of the corresponding connecting shaft. A fixed ring is rotatably connected between every two connecting columns, and a placement table is rotatably connected to the inner walls of the plurality of fixed rings. The fixed rings between the corresponding two connecting columns are driven to make internal and external friction reciprocating movements by the eccentric connecting shafts on the three fourth gears.

[0008] The main body is provided with a grinding tabletop at the top of the internal activity cavity. A fixing column is fixedly connected to the inner wall of the main body. The top of the fixing column is fixedly connected with a central tabletop, and there is a slot for the connecting shaft to slide between the central tabletop and the grinding tabletop.

[0009] Furthermore, a flipping mechanism is installed on the outer wall of the main body. The flipping mechanism includes two first metal frames. Two positive circular plates are fixedly connected to the tops of the two first metal frames. Every two of the positive circular plates are connected by an elliptical plate. Two first gears are installed on the opposite sides of the two positive circular plates. One of the first gears is fixed to the elliptical plate, and the other first gear rotates relative to the elliptical plate. Two second metal frames are fixedly connected to the outer walls of the other two positive circular plates. A top grinding disc is rotatably connected between the two second metal frames. A plurality of first limiting blocks are fixedly connected to the outer wall of the top grinding disc. A first motor is installed on one side of a positive circular plate away from the main body. The output shaft of the first motor drives the elliptical plate to rotate, and then the first gears mesh with each other to drive the top grinding disc to turn.

[0010] Through the above technical solution, during use, a plurality of bearing rings are respectively placed into the processing device. Then, the flipping mechanism is used to seal the processing device. At the same time, relying on a single motor enables both sides of the bearing ring to be ground, reducing additional equipment investment while ensuring the processing quality. Specifically, when the bearing ring is placed into the device, the first motor is started at this time. Its output shaft will drive the elliptical plate to rotate. The first gear located at the position of the first motor will remain stationary. Then, under the meshing of the two first gears, the other first gear will keep rotating, so as to ensure the stability of the flipping. Subsequently, the two second metal frames drive the top grinding disc to rotate until it covers the main body. It should be noted that when the elliptical plate rotates 90°, the top grinding disc rotates 180° under the bending form of the second metal frame.

[0011] Furthermore, a driving mechanism is installed on the inner wall of the main body. The driving mechanism includes a second gear. An outer ring rotating layer driven by the second gear is rotatably connected to the top of the main body. A plurality of second limiting blocks are fixedly connected to the outer wall of the outer ring rotating layer. The plurality of second limiting blocks are alternately connected with the corresponding first limiting blocks. A second motor is installed on the inner wall of the main body. The top of the second motor is fixedly connected with a driving shaft. A toothed ring meshing with the second gear is installed at the bottom of the outer ring rotating layer. The rotation of the toothed ring drives the plurality of second limiting blocks on the outer wall of the outer ring rotating layer to rotate, and then the top grinding disc on the inner walls of the plurality of first limiting blocks rotates.

[0012] Through the above technical solution, when the bearing ring is placed in the device and the top covering is completed, the driving mechanism is used to provide driving force to ensure the grinding state of the device. Driven by a single motor, on the premise of ensuring the grinding of the bottom of the bearing ring, the top grinding disc is driven to grind the top of the bearing ring. Specifically, the second motor is started to drive the second gear at the top of the drive shaft to rotate, thereby driving the outer ring rotating layer connected to the toothed ring to rotate. Since a plurality of second limit blocks and corresponding first limit blocks generate limits, the top grinding disc will rotate to grind the top of the bearing ring. It should be noted that the outer walls of the second limit block and the first limit block are smooth and the opposite sides are convex, so as to ensure that the top grinding disc can keep rotating after being combined with the main body. In addition, the outer ring rotating layer is sleeved on the outer wall of the main body and is disconnected at the center.

[0013] Further, a sleeve is fixedly connected to one end of the three connecting rods away from the fourth gear. The sleeve is rotatably connected to the fixed column. A plurality of first meshing columns are fixedly connected to one side of the inner activity cavity top away from the three connecting rods. The three fourth gears mesh with the corresponding first meshing columns to rotate and drive the corresponding connecting shafts to perform eccentric rotation. A third gear is fixedly connected to the outer wall of the sleeve. The rotation of the second gear drives the sleeve on the inner wall of the third gear to rotate, and then the three connecting rods drive the corresponding fourth gears to rotate.

[0014] Through the above technical solution, with the movement of the driving mechanism, the grinding mechanism will be driven to operate, so that the bearing ring placed inside the processing device will perform revolution grinding, fully grinding the bottom, and while ensuring rotary grinding, the bearing ring will move from the inside to the outside, increasing the lateral movement, and ensuring the quality of the bearing after processing through multi-directional grinding. Specifically, with the rotation of the second gear, the sleeve on the inner wall of the third gear will be driven to rotate, and the three connecting rods thereon will rotate. Since the three fourth gears mesh with a plurality of first meshing columns, when the three connecting rods rotate, the three fourth gears will rotate accordingly. At the same time, the connecting shaft is located at the corner of the fourth gear. Therefore, during the rotation of the fourth gear, the connecting shaft performs eccentric rotation, thereby realizing the overall revolution movement.

[0015] Further, a plurality of second meshing columns are fixedly connected to the outer walls of the three placement platforms. The grinding tabletop is fixedly connected with a plurality of teeth meshing with the plurality of second meshing columns. Placement openings for placing the bearing ring are formed inside the three placement platforms. The rotation of the three fixed rings drives the second meshing columns on the placement platforms to mesh and rotate with the teeth, and then the bearing rings on the placement platforms rotate.

[0016] With the above technical solution, when the grinding mechanism starts to rotate, the connected rotating surface mechanism will rotate accordingly, thereby rotating and grinding the end face of the ring. Moreover, when the bearing ring reciprocates inward and outward on the main body, it will rotate due to collision with the outside world at this time. Therefore, the position of the bearing ring is adjusted, local heat dissipation is increased, and the grinding quality is improved. Specifically, a plurality of bearing rings are placed on the corresponding placement ports. When the connecting shaft performs eccentric motion, as the connecting shaft moves to the side close to the fixed column, the two adjacent connecting columns will move closer and squeeze the corresponding fixed ring to move away from the fixed column. On the contrary, when the connecting shaft moves to the side far from the fixed column, at this time, due to the two adjacent connecting columns being far apart and forming a pull, the corresponding fixed ring moves inward. When the fixed ring moves outward, the multiple second engaging columns placed on the rotating placement table on its inner wall will engage with the corresponding ratchets. During the revolution process, the placement table rotates, thereby completing the surface-changing operation on the multiple bearing rings on the placement table. It should be noted that the fourth gear and the fixed ring are not coplanar, so it does not interfere during the rotation process.

[0017] The beneficial effects of the present invention are as follows: (1) By designing the flipping mechanism, driving mechanism, grinding mechanism, and rotating surface mechanism, the present invention can grind both sides of the bearing ring during the grinding process of the bearing ring, and at the same time ensure that the bearing ring can rotate and be ground horizontally. In addition, the placement ring during the grinding process is turned over regularly to reduce grinding at the same position and increase heat dissipation; (2) By designing the flipping mechanism and driving mechanism, when the bearing ring is processed, the flipping grinding disc is turned over and its rotation is ensured, thereby grinding both sides of the ring, reducing subsequent processing steps, and ensuring double-sided grinding driven by a single motor, reducing additional equipment investment; (3) By designing the grinding mechanism and rotating surface mechanism, when the bearing ring is ground, during the process of ensuring rotary grinding, the bearing ring is driven to move from the inside to the outside by the rotary motion, increasing the grinding effect of the ring. At the same time, during the sliding process from the inside to the outside, when the bearing ring moves to the outside, it will rotate, changing single-region grinding and reducing the increase in local heat generated by grinding. Description of the Drawings

[0018] Figure 1 is the three-dimensional structure schematic diagram of the present invention;

[0019] Figure 2 is the front view of the present invention;

[0020] Figure 3 is the sectional view of the present invention;

[0021] Figure 4 is Figure 3 the partial enlarged view at A in

[0022] Figure 5 It is a schematic diagram of the internal structure of the present invention;

[0023] Figure 6 It is a schematic diagram of the structure of the surface-rotating mechanism of the present invention;

[0024] Figure 7 It is a schematic diagram of the structure of the grinding mechanism of the present invention;

[0025] Figure 8 It is a cross-sectional view of the brick surface mechanism and the grinding mechanism of the present invention.

[0026] Reference numerals: 11, main body; 12, grinding table; 13, fixing column; 14, central table; 15, internal movable cavity; 2, flipping mechanism; 21, first metal frame; 22, positive circular plate; 23, first motor; 24, first gear; 25, second metal frame; 26, top grinding disc; 27, first limit block; 3, driving mechanism; 31, second motor; 32, driving shaft; 33, second gear; 34, outer ring rotating layer; 35, second limit block; 36, toothed ring; 4, grinding mechanism; 41, sleeve; 42, third gear; 43, connecting rod; 44, fourth gear; 45, first meshing column; 46, connecting shaft; 5, surface-rotating mechanism; 51, connecting column; 52, fixing ring; 53, placement table; 54, placement opening; 55, second meshing column; 56, ratchet teeth. Detailed implementation manners

[0027] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0028] As Figures 1-8As shown in the figure, a device for grinding the end face of a motor bearing ring in this embodiment includes a main body 11. There is an internal movable cavity 15 at the top of the main body 11. The main body 11 is provided with a grinding table 12 at the top of the internal movable cavity 15. A fixed column 13 is fixedly connected to the inner wall of the main body 11. The top of the fixed column 13 is fixedly connected to a central table 14. And there is a slot for the sliding of the connecting shaft 46 between the central table 14 and the grinding table 12. A turning mechanism 2 is installed on the outer wall of the main body 11. The turning mechanism 2 includes two first metal frames 21. Two positive circular plates 22 are fixedly connected to the tops of the two first metal frames 21. Every two positive circular plates 22 are connected by an elliptical plate. Two first gears 24 are installed on the opposite sides of the two positive circular plates 22. One of the first gears 24 is fixed to the elliptical plate, and the other first gear 24 rotates with the elliptical plate. Second metal frames 25 are fixedly connected to the outer walls of the other two positive circular plates 22. A top grinding disc 26 is rotatably connected between the two second metal frames 25. A plurality of first limit blocks 27 are fixedly connected to the outer wall of the top grinding disc 26. A first motor 23 is installed on one side of a positive circular plate 22 away from the main body 11. The rotation of the elliptical plate is driven by the output shaft of the first motor 23. Then the first gears 24 mesh with each other to drive the turning of the top grinding disc 26. During use, a plurality of bearing rings are respectively placed into the processing device. Then the processing device is capped by using the turning mechanism 2. At the same time, the two sides of the bearing ring can be ground by relying on a single motor, reducing the investment in additional equipment while ensuring the processing quality. Specifically, when the bearing ring is placed into the device, the first motor 23 is started at this time. Its output shaft will drive the elliptical plate to rotate. The first gear 24 located at the position of the first motor 23 will remain stationary. Then, under the meshing of the two first gears 24, the other first gear 24 will keep rotating, so as to ensure the stability of the turning. Subsequently, the second metal frames 25 drive the top grinding disc 26 to rotate until it covers the main body 11. It should be noted that when the elliptical plate rotates 90°, the top grinding disc 26 rotates 180° under the bending shape of the second metal frames 25.

[0029] As Figures 3-5As shown, a driving mechanism 3 is installed on the inner wall of the main body 11. The driving mechanism 3 includes a second gear 33. A rotating outer ring layer 34 driven by the second gear 33 is rotatably connected to the top of the main body 11. A plurality of second limiting blocks 35 are fixedly connected to the outer wall of the rotating outer ring layer 34. The plurality of second limiting blocks 35 are alternately connected to the corresponding first limiting blocks 27. A second motor 31 is installed on the inner wall of the main body 11. A driving shaft 32 is fixedly connected to the top of the second motor 31. A toothed ring 36 meshing with the second gear 33 is installed at the bottom of the rotating outer ring layer 34. The rotation of the toothed ring 36 drives the rotation of the plurality of second limiting blocks 35 on the outer wall of the rotating outer ring layer 34. Further, the top grinding discs 26 on the inner walls of the plurality of first limiting blocks 27 rotate. When the bearing race is placed in the device and the top is covered, at this time, the driving mechanism 3 is used to provide driving force to ensure the grinding state of the device. Under the drive of a single motor, on the premise of ensuring the grinding of the bearing race at the bottom, the top grinding disc 26 is driven to grind the top of the bearing race. Specifically, the second motor 31 is started to drive the second gear 33 at the top of the driving shaft 32 to rotate, and then drive the rotating outer ring layer 34 connected to the toothed ring 36 to rotate. Since the plurality of second limiting blocks 35 and the corresponding plurality of first limiting blocks 27 produce limits, the top grinding disc 26 will rotate to grind the top of the bearing race. It should be understood that the outer walls of the second limiting blocks 35 and the first limiting blocks 27 are smooth and the opposite sides protrude, so as to ensure that the top grinding disc 26 can keep rotating after being combined with the main body 11. In addition, the rotating outer ring layer 34 is sleeved on the outer wall of the main body 11 and is disconnected at the center.

[0030] As Figures 7-8As shown, a grinding mechanism 4 is installed in the internal activity cavity 15 for driving the rotation and grinding of the bearing race. The grinding mechanism 4 includes three connecting rods 43, and the other ends of the three connecting rods 43 are all installed with fourth gears 44. The corresponding fourth gears 44 are driven to rotate through the three connecting rods 43. Connecting shafts 46 are installed at the eccentric positions on the surfaces of the three fourth gears 44. One end of the three connecting rods 43 away from the fourth gears 44 is fixedly connected with a sleeve 41. The sleeve 41 is rotatably connected with the fixed column 13. A plurality of first meshing columns 45 are fixedly connected to one side of the top of the internal activity cavity 15 away from the three connecting rods 43. The corresponding connecting shafts 46 are driven to perform eccentric rotation through the meshing rotation of the three fourth gears 44 and the corresponding first meshing columns 45. A third gear 42 is fixedly connected to the outer wall of the sleeve 41. The rotation of the second gear 33 drives the sleeve 41 inside the third gear 42 to rotate, and then the three connecting rods 43 drive the corresponding fourth gears 44 to rotate. With the movement of the driving mechanism 3, the grinding mechanism 4 will be driven to operate, so that the bearing race placed inside the processing device performs revolution grinding, fully grinding the bottom, and while ensuring rotary grinding, the bearing race performs a movement from the inside to the outside, increasing the lateral movement, and ensuring the quality of the bearing after processing through multi-directional grinding. Specifically, with the rotation of the second gear 33, the sleeve 41 inside the third gear 42 will be driven to rotate, and the three connecting rods 43 thereon will rotate. Since the three fourth gears 44 are meshed with a plurality of first meshing columns 45, when the three connecting rods 43 rotate, the three fourth gears 44 will rotate accordingly. At the same time, the connecting shaft 46 is located at the corner of the fourth gear 44. Therefore, during the rotation of the fourth gear 44, the connecting shaft 46 performs eccentric rotation, thereby realizing the overall revolution movement.

[0031] As Figure 6 and Figure 8As shown, a turning mechanism 5 is installed on the top of each of the three fourth gears 44 for grinding the bearing race from the inside out. The turning mechanism 5 includes a plurality of connecting columns 51 installed on the outer wall of the corresponding connecting shaft 46. A fixed ring 52 is rotatably connected between every two connecting columns 51. The inner walls of the plurality of fixed rings 52 are rotatably connected to a placement table 53. By the eccentric connecting shaft 46 on the three fourth gears 44 rotating and squeezing the fixed ring 52 between the corresponding two connecting columns 51 to perform internal and external friction reciprocating motion, a plurality of second meshing columns 55 are fixedly connected to the outer walls of the three placement tables 53. The grinding table surface 12 is fixedly connected with a plurality of teeth 56 meshing with the plurality of second meshing columns 55. Placement openings 54 for placing bearing races are formed inside the three placement tables 53. By the rotation of the three fixed rings 52, the second meshing columns 55 on the placement table 53 are engaged with the teeth 56 to generate rotational movement, and thus the bearing races on the placement table 53 rotate. When the grinding mechanism 4 starts to rotate, the connected turning mechanism 5 will rotate accordingly, and then the end face of the race is rotationally polished. And when the bearing race makes internal and external reciprocating motion on the main body 11, it will collide with the outside world and generate rotation at this time, so the position of the bearing race is swapped, local heat dissipation is increased, and the grinding quality is improved. Specifically, a plurality of bearing races are placed on the corresponding placement openings 54. When the connecting shaft 46 makes an eccentric movement, as the connecting shaft 46 moves to the side close to the fixed column 13, the two adjacent connecting columns 51 will approach and squeeze the corresponding fixed ring 52 to move away from the fixed column 13. On the contrary, when the connecting shaft 46 moves to the side away from the fixed column 13, at this time, due to the two adjacent connecting columns 51 being farther apart to form a pull, the corresponding fixed ring 52 moves inward. When the fixed ring 52 moves outward, a plurality of second meshing columns 55 on the placement table 53 rotatably placed on its inner wall will engage with the corresponding teeth 56. During the revolution process, the placement table 53 rotates, and thus the operation of changing the surface of the plurality of bearing races on the placement table 53 is completed. It should be noted that the fourth gear 44 and the fixed ring 52 are not coplanar, so it does not interfere during the rotation process.

[0032] The working principle of this embodiment is as follows. When in use, multiple bearing rings are placed on the corresponding placement ports 54. At this time, the first motor 23 is started, and its output shaft will drive the elliptical plate to rotate. Among them, the first gear 24 located at the position of the first motor 23 will remain stationary. Then, under the meshing of the two first gears 24, the other first gear 24 will keep rotating. Subsequently, the second metal frame 25 will drive the top grinding disc 26 to rotate until it covers the main body 11. The second motor 31 is started to drive the second gear 33 at the top of the drive shaft 32 to rotate, thereby driving the outer ring rotating layer 34 connected to the toothed ring 36 to rotate. Since the multiple second limit blocks 35 are limited by the corresponding multiple first limit blocks 27, the top grinding disc 26 will rotate to grind the top of the bearing ring. At the same time, as the second gear 33 rotates, it will drive the sleeve 41 on the inner wall of the third gear 42 to rotate, and the three connecting rods 43 thereon will rotate. When the three connecting rods 43 rotate, the three fourth gears 44 will rotate accordingly. At this time, the rotary grinding of the bearing ring is realized. In addition, the connecting shaft 46 thereon performs eccentric rotation. When the connecting shaft 46 performs eccentric movement, as the connecting shaft 46 moves to the side close to the fixed column 13, the two adjacent connecting columns 51 will approach and squeeze the corresponding fixed ring 52 to move away from the fixed column 13. At this time, the transverse grinding of the bearing ring is realized. When the fixed ring 52 moves outward, the multiple second meshing columns 55 on the placement table 53 rotatably placed on its inner wall will mesh with the corresponding toothed teeth 56. During the revolution process, the placement table 53 will rotate, thereby completing the surface-changing operation of the multiple bearing rings on the placement table 53. Thus, the grinding process of the bearing ring ends.

[0033] The above is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention.

Claims

1. A device for grinding the end face of a motor bearing race, comprising a main body (11), characterized in that: The top of the main body (11) is provided with an internal movable cavity (15). A flipping mechanism (2) is installed on the outer wall of the main body (11). The flipping mechanism (2) includes two first metal frames (21). At the top of each of the two first metal frames (21), two positive circular plates (22) are fixedly connected. Every two of the positive circular plates (22) are connected by an elliptical plate. On the opposite sides of the two positive circular plates (22), two first gears (24) are installed respectively. One of the first gears (24) is fixed to the elliptical plate, and the other first gear (24) rotates relative to the elliptical plate. On the outer walls of the other two positive circular plates (22), second metal frames (25) are fixedly connected respectively. A top grinding disc (26) is rotatably connected between the two second metal frames (25). A plurality of first limit blocks (27) are fixedly connected to the outer wall of the top grinding disc (26). A first motor (23) is installed on one side of a positive circular plate (22) away from the main body (11). The elliptical plate is driven to rotate by the output shaft of the first motor (23). Then, the first gears (24) mesh with each other to drive the top grinding disc (26) to turn. The internal movable cavity (15) is installed with a grinding mechanism (4) for driving the bearing race to rotate for grinding processing; A driving mechanism (3) is installed on the inner wall of the main body (11). The driving mechanism (3) includes a second gear (33). An outer ring rotating layer (34) driven by the second gear (33) is rotatably connected to the top of the main body (11). A plurality of second limit blocks (35) are fixedly connected to the outer wall of the outer ring rotating layer (34). The plurality of second limit blocks (35) are alternately connected with the corresponding first limit blocks (27). A second motor (31) is installed on the inner wall of the main body (11). A driving shaft (32) is fixedly connected to the top of the second motor (31). A toothed ring (36) meshing with the second gear (33) is installed at the bottom of the outer ring rotating layer (34). The rotation of the toothed ring (36) drives the plurality of second limit blocks (35) on the outer wall of the outer ring rotating layer (34) to rotate. Then, the top grinding disc (26) on the inner walls of the plurality of first limit blocks (27) rotates; The grinding mechanism (4) includes three connecting rods (43). The other ends of the three connecting rods (43) are all installed with fourth gears (44). The corresponding fourth gears (44) are driven to rotate by the three connecting rods (43). Connecting shafts (46) are installed at the eccentric positions on the surfaces of the three fourth gears (44). A turning surface mechanism (5) is installed on the top of each of the three fourth gears (44) for grinding the bearing race from the inside to the outside; The turning surface mechanism (5) includes a plurality of connecting columns (51) installed on the outer walls of the corresponding connecting shafts (46). A fixed ring (52) is rotatably connected between every two of the connecting columns (51). An installation table (53) is rotatably connected to the inner walls of the plurality of fixed rings (52). The fixed rings (52) between the corresponding two connecting columns (51) are extruded to perform internal and external friction reciprocating motions by the rotation of the eccentric connecting shafts (46) on the three fourth gears (44).

2. The end face grinding device for the motor bearing ring according to claim 1, wherein The main body (11) is provided with a grinding tabletop (12) located at the top of the internal activity cavity (15). A fixing column (13) is fixedly connected to the inner wall of the main body (11). The top of the fixing column (13) is fixedly connected to a central tabletop (14), and there is a slot for the sliding of the connecting shaft (46) between the central tabletop (14) and the grinding tabletop (12).

3. The motor bearing ring end face grinding device according to claim 2, wherein One end of each of the three connecting rods (43) far from the fourth gear (44) is fixedly connected to a sleeve (41). The sleeve (41) is rotatably connected to the fixing column (13). A plurality of first meshing columns (45) are fixedly connected to one side of the top of the internal activity cavity (15) far from the three connecting rods (43). The rotation of the three fourth gears (44) meshing with the corresponding first meshing columns (45) drives the corresponding connecting shafts (46) to perform eccentric rotation.

4. The end face grinding device for the motor bearing ring according to claim 3, characterized in that, A third gear (42) is fixedly connected to the outer wall of the sleeve (41). The rotation of the second gear (33) drives the sleeve (41) inside the third gear (42) to rotate, and then the three connecting rods (43) drive the corresponding fourth gears (44) to rotate.

5. The motor bearing raceway end face grinding device according to claim 2, characterized in that, A plurality of second meshing columns (55) are fixedly connected to the outer walls of the three placement platforms (53). The grinding tabletop (12) is fixedly connected to a plurality of teeth (56) meshing with the plurality of second meshing columns (55).

6. The end face grinding device for the motor bearing ring according to claim 5, wherein, Placement openings (54) for placing bearing rings are formed inside each of the three placement platforms (53). The rotation of the three fixing rings (52) drives the second meshing columns (55) on the placement platforms (53) to engage and rotate with the teeth (56), and then the bearing rings on the placement platforms (53) rotate.

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