Precision machining device for motor flange bearing production

Abstract

The invention discloses a precision machining device for motor flange bearing production, and particularly relates to the technical field of bearing machining, the precision machining device comprises a rack, and a workpiece supporting unit, a grinding unit and an abrasive feeding unit are arranged on the rack; the workpiece supporting unit comprises a mounting shaft, the grinding unit comprises a grinding wheel, and omission areas are formed at the junction of the outer ring part grinding surface and the flange part grinding surface and the junction of the outer ring part and the flange part; the abrasive feeding unit comprises a feeding pipe, and the feeding pipe conveys abrasive particle materials to the omission area. Abrasive particles are supplemented into the omission area through the feeding pipe, under the movement of the grinding wheel and the bearing outer ring, the abrasive particles continuously move in the omission area and the junction area of the outer ring part and the flange part, and grinding machining of the area is formed. The grinding omission that the grinding wheel cannot make full contact with the junction of the outer ring part and the flange part is supplemented, the grinding machining precision of the device is guaranteed, and the machining quality of products is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of bearing processing, and more specifically, to a precision processing device for producing motor flange bearings. Background Art

[0002] A bearing is a device used to reduce friction between rotating parts in a mechanical device, allowing rotational motion to proceed smoothly relative to a fixed part or other rotating parts. A bearing is usually composed of an inner ring, an outer ring, rolling elements (such as balls, rollers, needle rollers, etc.) and a cage. In a motor, the rotating parts of the motor, such as the motor rotor (i.e. the rotating part in the motor), usually need to be supported and positioned to ensure that they maintain a stable and correct motion trajectory during rotation. Therefore, bearings are needed to support the rotor so that the rotor maintains a stable axial and radial position during rotation.

[0003] During the production process, bearings need to be ground to ensure that they have good dimensional accuracy, surface quality and geometric shape, and to improve the running accuracy and performance of the bearings. During the production process of bearings, common grinding includes the following aspects: outer diameter grinding, inner diameter grinding, end face grinding, raceway grinding and mating surface grinding. Among them, the outer diameter is one of the important dimensions of the bearing, which is crucial to the installation and operation of the bearing. Through outer diameter grinding, it can be ensured that the outer diameter of the bearing meets the design requirements and maintains a certain roundness and surface roughness. During assembly, the bearing needs to cooperate well with adjacent components to ensure the transmission of force and smooth operation. By grinding the mating surface of the bearing, it can be ensured that the matching size and shape between the bearing and other components meet the design requirements.

[0004] In some motor structures, flange bearings are required. A flange is installed on the outer ring of the flange bearing. This flange helps to better position and fix the bearing during installation. Due to the presence of the flange, flange bearings are easier to position and fix during installation. The flange can be directly connected to the structure of the machine equipment without the need for additional brackets or fixings.

[0005] For the outer ring of the bearing with a flange, the outer ring of the bearing and the flange surface form a junction area. Since the flange surface is a working mating surface, it also needs to be ground during the processing, that is, grinding equipment is needed to grind the surface of the outer ring of the bearing, and grinding equipment is also needed to grind the surface of the flange. In order to avoid cross-impact areas when two sets of grinding equipment are used for grinding (for example, the outer ring surface of the bearing is first ground, and then the flange is ground. The grinding equipment for grinding the flange is easy to contact the already ground outer ring of the bearing, causing an impact), it is necessary to use an integrated grinding equipment, for example, a grinding wheel with two grinding surfaces is used, the circumferential surface of the grinding wheel is in contact with the surface of the outer ring of the bearing, and the end plane of the grinding wheel is in contact with the flange surface, and synchronous grinding processing is performed to avoid repeated grinding.

[0006] During use, due to the special position and shape of the edge of the grinding wheel (the junction of the circumferential surface of the grinding wheel and the end plane), stress is easily concentrated, so a certain chamfer is usually required. The existence of this chamfer leads to the formation of a grinding omission area, and during use, the material on the edge is more likely to fall off, resulting in a lack of grinding at the junction between the flange and the outer ring of the bearing during grinding, which can easily affect the grinding accuracy and reduce product quality. Summary of the invention

[0007] The present invention provides a precision machining device for the production of motor flange bearings, and aims to solve the following technical problem: in the existing synchronous grinding equipment, due to chamfering and material shedding at the edge of the grinding wheel, the junction between the flange and the outer ring of the bearing is not polished during grinding, which affects the grinding accuracy and reduces the product quality.

[0008] To achieve the above-mentioned object, the present invention provides the following technical solutions: A precision machining device for producing motor flange bearings, comprising a frame, on which a workpiece supporting unit, a grinding unit and an abrasive feeding unit are arranged; The workpiece support unit includes a mounting shaft, the mounting shaft is used to mount the outer ring of the bearing, the grinding unit includes a grinding wheel, the grinding wheel includes an outer ring grinding surface and a flange grinding surface, and a missing area is formed at the junction of the outer ring grinding surface and the flange grinding surface and at the junction of the outer ring and the flange; The abrasive feeding unit includes a feeding pipe, the bottom output port of the feeding pipe is arranged corresponding to the missing area, an abrasive box is arranged on the frame, and the outer ring is connected with the abrasive box through the abrasive pipe. During grinding, the feeding pipe transports abrasive particle material to the missing area.

[0009] In a preferred embodiment, the workpiece support unit also includes a driving machine, which includes a transverse feed drive and a longitudinal feed drive. The transverse feed drive is used to drive the mounting shaft to move transversely along the axial direction of the mounting shaft, and the transverse feed drive is used to drive the mounting shaft to move longitudinally. The longitudinal feed drive is installed on the frame, the transverse feed drive is installed on the output end of the longitudinal feed drive, and the mounting shaft is installed on the output end of the transverse feed drive. The driving machine also includes a driving motor for driving the mounting shaft to rotate, and the grinding unit also includes a grinder, which is used to drive the grinding wheel to rotate.

[0010] In a preferred embodiment, the abrasive feeding unit also includes a feeding drive unit, which is used to drive the feeding tube to move. The feeding drive unit includes a transverse drive and a vertical drive. The transverse drive is installed on the frame, and the vertical drive is installed on the output end of the transverse drive. The feeding tube is fixedly installed on the output end of the vertical drive. The transverse drive is used to drive the feeding tube to move transversely, and the vertical drive is used to drive the feeding tube to move vertically.

[0011] In a preferred embodiment, the abrasive feeding unit further comprises a material stopper, which is fixedly mounted on the frame, located above the fitting position between the outer ring grinding surface and the outer ring, and the end of the material stopper is arranged close to the missing area.

[0012] In a preferred embodiment, an adhesive material box is also provided on the frame, and the feed pipe is connected to the adhesive material box through the adhesive material pipe. The adhesive material box stores viscous adhesive. A pump is provided on the adhesive material pipe. When in use, the adhesive is input into the feed pipe through the pump.

[0013] In a preferred embodiment, a power rope is further provided on the frame, the power rope passes through the missing area, and the portion of the power rope passing through the missing area moves downward, and the diameter value of the missing area is smaller than the range value of the missing area.

[0014] In a preferred embodiment, a support guide wheel group is provided on the frame, the support guide wheel group is composed of a plurality of guide wheels, the power rope is a coil structure, the power rope is wound around each guide wheel and forms a vertical part passing through the missing area, wherein one or more guide wheels are driven to rotate by a motor.

[0015] In a preferred embodiment, a dust collector is provided inside the frame, which is used to collect part of the dust generated by grinding. A mesh plate is provided on the frame, and the workpiece support unit and the grinding unit are both installed on the mesh plate. A recovery bucket is provided at the bottom of the mesh plate, and the recovery bucket is used to recover the fallen abrasive particles.

[0016] In a preferred embodiment, the mounting shaft fixes the outer ring of the bearing through a fixing component, the fixing component includes a positioning step shaft, the positioning step shaft is fixedly mounted on the end of the mounting shaft, a limit ring is fixedly mounted on the positioning step shaft for blocking and limiting the flange part, the outer diameter of the positioning step shaft is the same as the inner diameter of the outer ring of the bearing, the end of the positioning step shaft away from the limit ring is fixedly connected to a threaded column, the fixing component also includes a threaded sleeve, the threaded sleeve is threadedly mounted on the threaded column, a rubber resistance block is fixedly connected to the side of the threaded sleeve close to the outer ring of the bearing, and the rubber resistance block contacts the end face of the outer ring of the bearing away from the flange part.

[0017] In a preferred embodiment, the length of the positioning step shaft is smaller than the length of the bearing outer ring, an inward extension portion is provided at a position of the rubber resistance increasing block close to the inner part of the bearing outer ring, the inward extension portion contacts the inner wall of the bearing outer ring, and is used to provide friction to the inner wall of the bearing outer ring, a radial groove is provided in the rubber resistance increasing block, an axial groove is provided in the inward extension portion, and the radial groove is connected to the axial groove.

[0018] The beneficial effect of the present invention is that during grinding, the feed pipe is used to supplement the abrasive particles into the missing area, and under the movement of the grinding wheel and the outer ring of the bearing, the abrasive particles are continuously moved in the missing area and the boundary area between the outer ring part and the flange part, and grinding of this area is performed to supplement the grinding omissions at the boundary between the outer ring part and the flange part that the grinding wheel cannot completely contact. When the grinding wheel has collapses and potholes at the position corresponding to the missing area, the supplemented abrasive particles can also be filled, thereby ensuring the grinding processing accuracy of the device, improving the processing efficiency of the product, and avoiding the problem of affecting the product processing quality due to material loss at the edge of the grinding wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 It is the front view of the present invention.

[0021] Figure 3 It is the front view of the processing of the present invention.

[0022] Figure 4 It is a left view of the internal structure of the frame of the present invention.

[0023] Figure 5 It is a schematic structural diagram of the abrasive feeding unit of the present invention.

[0024] Figure 6 This is a front view of the grinding wheel of the present invention grinding the outer ring of the bearing.

[0025] Figure 7 This is a left side view of the grinding wheel of the present invention grinding the outer ring of the bearing.

[0026] Figure 8 A top view of the grinding wheel of the present invention grinding the outer ring of the bearing Fig. 9 It is a schematic diagram of the main viewing direction when the material stopper of the present invention limits the falling abrasive.

[0027] Fig.10 The left side view of the grinding wheel grinding the outer ring of the bearing after adding the power rope of the present invention.

[0028] Fig.11 This is a top view of the power rope of the present invention promoting the movement of abrasive in the missed area.

[0029] Fig.12 It is a diagram for setting the power rope of the present invention.

[0030] Fig.13 This is a schematic structural diagram of a bearing outer ring with a flange processed by the present invention.

[0031] Fig.14 It is a schematic diagram of the overall structure of the fixing assembly of the present invention.

[0032] The accompanying drawings are marked as follows: 1, frame; 11, mesh plate; 12, recovery bucket; 13, dust collector; 2, workpiece support unit; 21, mounting shaft; 22, driving machine; 221, lateral feed driver; 222, longitudinal feed driver; 23, fixing assembly; 231, positioning step shaft; 232, limit stop ring; 233, threaded column; 24, threaded sleeve; 25, rubber resistance block; 251, inner extension; 252, radial groove; 253, axial groove; 3, grinding unit; 31, grinding Grinding machine; 32. Grinding wheel; 321. Grinding surface of outer ring; 322. Grinding surface of flange; 33. Missing area; 4. Bearing outer ring; 41. Outer ring; 42. Flange; 5. Abrasive feeding unit; 51. Feeding pipe; 511. Abrasive material pipe; 512. Adhesive material pipe; 52. Feeding drive unit; 521. Horizontal drive; 522. Vertical drive; 53. Abrasive material box; 54. Adhesive material box; 55. Material stopper; 6. Power rope; 61. Support guide wheel assembly. DETAILED DESCRIPTION

[0033] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0034] Refer to the instruction manual Figures 1 to 14 A precision machining device for producing motor flange bearings includes a frame 1, on which a workpiece support unit 2, a grinding unit 3 and an abrasive feeding unit 5 are arranged. The workpiece support unit 2 includes a mounting shaft 21, which is rotatably arranged. The mounting shaft 21 is used to mount a bearing outer ring 4. Referring to the dust collector 13 in the specification, the bearing outer ring 4 is composed of an outer ring portion 41 and a flange portion 42. The grinding unit 3 includes a grinding wheel 32, which is rotatably arranged. The circumferential side wall of the grinding wheel 32 is an outer ring portion grinding surface 321, which is used to grind the outer surface of the outer ring portion 41. The end surface of the grinding wheel 32 is the flange grinding surface 322, which is used to grind the surface of the flange 42. In order to avoid material collapse, a small chamfer is made at the junction of the outer ring grinding surface 321 and the flange grinding surface 322. During the grinding process, the outer ring grinding surface 321 is attached to the outer ring 41, and the flange grinding surface 322 is attached to the flange 42. Due to the existence of the chamfer, the junction of the outer ring grinding surface 321 and the flange grinding surface 322 and the junction of the outer ring 41 and the flange 42 form a missing area 33. The abrasive feeding unit 5 includes a feeding pipe 51, the bottom output port of the feeding pipe 51 is arranged corresponding to the missing area 33, an abrasive box 53 is arranged on the frame 1, the outer ring portion 41 is connected with the abrasive box 53 through the abrasive pipe 511, the abrasive box 53 stores abrasive particles, the size and material of the particles can be determined according to the specific grinding requirements, the specific material can refer to the abrasive material of the grinding wheel 32 used, the abrasive in the abrasive box 53 can be transported to the feeding pipe 51, and the feeding pipe 51 is fed to the missing area 33, and the abrasive pipe 511 can be provided with a control valve to control the feeding pipe 51 to feed only during grinding processing.

[0035] Specifically, during processing, the grinding wheel 32 contacts the outer ring 4 of the bearing, and the mounting shaft 21 drives the outer ring 4 of the bearing and the grinding wheel 32 to rotate synchronously in opposite directions, or synchronously in the same direction with a differential speed (the rotation speed of the grinding wheel 32 is greater than the rotation speed of the outer ring 4 of the bearing) to perform grinding processing. Since there is no physical structure of the grinding wheel 32 in contact with the outer ring 4 of the bearing in the omitted area 33, the abrasive particles are filled into the omitted area 33, and the abrasive particles enter the omitted area 33. Figure 6 and Figure 7 , and under the movement of the grinding wheel 32 and the bearing outer ring 4, the abrasive particles are constantly moved in the missed area 33 and the boundary area between the outer ring part 41 and the flange part 42, and the grinding process of this area is formed to supplement the grinding omission at the boundary area between the outer ring part 41 and the flange part 42 that the grinding wheel 32 cannot completely contact. And because the bearing outer ring 4 and the grinding wheel 32 are both circular structures, refer to the attached manual Figure 7 A triangular area is formed on the omitted area 33, and as the abrasive particles gradually move downward, they gradually shrink and squeeze. Therefore, when the abrasive particles enter the omitted area 33, they are squeezed against each other, thereby squeezing the surface at the junction of the outer ring portion 41 and the flange portion 42, thereby forming a grinding effect when the abrasive particles move relatively.

[0036] At the same time, the abrasive particles output by the feed pipe 51 are flowing. When the grinding wheel 32 has cracks and pits at the position corresponding to the missing area 33, during grinding, the cracks and pits will be filled with flowing abrasive particles before contacting the bearing outer ring 4, thereby improving the grinding processing accuracy of the device, improving the processing efficiency of the product, and avoiding the problem of material loss at the edge of the grinding wheel 32 affecting the processing quality of the product.

[0037] It should be noted that, please refer to the attached manual Figure 1 and Figure 3The workpiece support unit 2 also includes a driving machine 22, which includes a transverse feed driver 221 and a longitudinal feed driver 222. The transverse feed driver 221 is used to drive the installation shaft 21 to move transversely along its axial direction to drive the flange portion 42 to fit the flange portion polishing surface 322. The transverse feed driver 221 is used to drive the installation shaft 21 to move longitudinally to drive the outer ring portion 41 to fit the outer ring portion polishing surface 321. The longitudinal feed driver 222 is installed on the frame 1, the transverse feed driver 221 is installed on the output end of the longitudinal feed driver 222, and the installation shaft 21 is installed on the output end of the transverse feed driver 221. The driving machine 22 also includes a driving motor for driving the installation shaft 21 to rotate, and the motor is installed on the transverse feed driver 221. The grinding unit 3 also includes a grinder 31, which is installed on the frame 1. The grinder 31 has a built-in motor, and the built-in motor is used to drive the grinding wheel 32 to rotate.

[0038] For further information, please refer to the attached manual. Figure 1 and Figure 5 The abrasive feeding unit 5 also includes a feeding drive unit 52, which is used to drive the feeding tube 51 to move, wherein the feeding drive unit 52 includes a transverse driver 521 and a vertical driver 522, the transverse driver 521 is installed on the frame 1, and the vertical driver 522 is installed on the output end of the transverse driver 521, and the feeding tube 51 is fixedly installed on the output end of the vertical driver 522, the transverse driver 521 is used to drive the feeding tube 51 to move horizontally, and the vertical driver 522 is used to drive the feeding tube 51 to move vertically, so that the position of the feeding tube 51 can be adjusted during use, so that the bottom discharge port of the feeding tube 51 can be more accurately aligned with the missing area 33.

[0039] It should be noted that the lateral feed drive 221, longitudinal feed drive 222, lateral drive 521 and vertical drive 522 used in the above embodiments are all commonly used linear drive structures, such as linear motors, cylinder structures, hydraulic cylinder structures, etc., which are not elaborated in this example.

[0040] In the above embodiment, in order to better concentrate the abrasive particles in the missing area 33, this embodiment also provides the following technical solutions. Figure 8 and Fig. 9The abrasive feeding unit 5 also includes a material stopper 55, which is fixedly mounted on the frame 1 (can be directly mounted on the outer shell of the grinder 31), and the material stopper 55 is located above the fitting position of the outer ring grinding surface 321 and the outer ring 41, and the end of the material stopper 55 is arranged close to the missing area 33, and the material stopper 55 is a rod structure. During actual grinding, the material stopper 55 does not contact the outer ring 41 and the outer ring grinding surface 321, and is therefore not affected. The feeding pipe 51 itself is arranged to align with the missing area 33, so under the obstruction of the material stopper 55, there are almost no abrasive particles falling outside the missing area 33. In addition, the bearing outer ring 4 and the missing area 33 can be tilted so that the end of the outer ring 41 close to the flange 42 is slightly tilted downward, so that the abrasive particles can automatically approach the flange 42 under the action of gravity and replenish the missing area 33.

[0041] In order to make the abrasive particles adhere to each other and not easy to disperse, this embodiment also provides the following technical solutions, see the attached manual Figure 1 and Figure 5 The frame 1 is also provided with an adhesive material box 54, and the feed pipe 51 is connected with the adhesive material box 54 through an adhesive material pipe 512. The adhesive material box 54 stores a viscous adhesive, and the adhesive material pipe 512 is provided with a pump. In actual use, the pump is used to synchronously input the adhesive into the feed pipe 51, so that the feed pipe 51 outputs abrasive particles with a softened adhesive, so that the abrasive particles are not easy to disperse, and have a certain bonding force with each other, so that when passing through the missing area 33, better grinding can be performed, wherein the adhesive is preferably a lubricating oil or grease with a certain viscosity.

[0042] In order to improve the efficiency of abrasive particles entering the missing area 33 for supplementary grinding, this embodiment also provides the following technical solutions. For details, refer to the attached manual. Fig.10 The frame 1 is also provided with a power rope 6, which passes through the missing area 33, and the part of the power rope 6 passing through the missing area 33 moves downward. Fig.11 The diameter value of the omitted area 33 is smaller than the range value of the omitted area 33, that is, the power rope 6 does not touch the grinding wheel 32 and the bearing outer ring 4. Therefore, in actual use, the power rope 6 is driven downward to promote the abrasive particles to enter and pass through the omitted area 33, which can avoid the abrasive from forming a blockage between the bearing outer ring 4 and the grinding wheel 32. At the same time, the movement of the power rope 6 can also drive the movement of the abrasive, accelerate the relative friction between the abrasive and the junction between the outer ring part 41 and the flange part 42, and improve the grinding efficiency.

[0043] For further information, please refer to the attached manual. Fig.12A support guide wheel group 61 is provided on the frame 1, and the support guide wheel group 61 is composed of a plurality of guide wheels (each guide wheel can be installed on the outer shell of the grinder 31), and the power rope 6 is a coil structure, and the power rope 6 is wound around each guide wheel and formed with a vertical part passing through the missing area 33, wherein one or more guide wheels are driven to rotate by a motor to realize the driving of the power rope 6, and the power rope 6 can adopt a high-strength braided wire structure or a metal wire structure, but the surface of the metal wire structure needs to be provided with tiny pits to increase the friction force on the abrasive particles and improve the driving effect on the abrasive particles.

[0044] Refer to the instruction manual Figure 4 A dust collector 13 is provided inside the frame 1, and the dust collector 13 is used to collect part of the dust generated by grinding. A mesh plate 11 is provided on the frame 1, and the workpiece supporting unit 2 and the grinding unit 3 are both installed on the mesh plate 11. A recovery bucket 12 is provided at the bottom of the mesh plate 11 for recovering the fallen abrasive particles.

[0045] Refer to the instruction manual Fig.14 The mounting shaft 21 fixes the bearing outer ring 4 through a fixing assembly 23. The fixing assembly 23 includes a positioning step shaft 231. The positioning step shaft 231 is fixedly mounted on the end of the mounting shaft 21. A limit ring 232 for blocking and limiting the flange portion 42 is fixedly mounted on the positioning step shaft 231. The outer diameter of the positioning step shaft 231 is the same as the inner diameter of the bearing outer ring 4. The end of the positioning step shaft 231 away from the limit ring 232 is fixedly connected with a threaded column 233. The fixing assembly 23 also includes a threaded sleeve 24. The threaded sleeve 24 is threadedly sleeved on the threaded column 233. The side of the threaded sleeve 24 close to the bearing outer ring 4 is fixedly connected with a rubber reinforcement. The resistance block 25, the rubber resistance-enhancing block 25 contacts the end face of the bearing outer ring 4 away from the flange portion 42 to provide friction to the end face of the bearing outer ring 4. The length of the positioning step shaft 231 is less than the length of the bearing outer ring 4. During installation, the bearing outer ring 4 is mounted on the positioning step shaft 231. The rubber resistance-enhancing block 25 is provided with an inner extension portion 251 at a position close to the inside of the bearing outer ring 4. The inner extension portion 251 contacts the inner wall of the bearing outer ring 4 to provide friction to the inner wall of the bearing outer ring 4. A radial groove 252 is provided in the rubber resistance-enhancing block 25, and an axial groove 253 is provided in the inner extension portion 251. The radial groove 252 is connected to the axial groove 253.

[0046] When in use, tighten the threaded sleeve 24 to make the rubber resistance-enhancing block 25 squeeze the end face of the bearing outer ring 4 and provide friction resistance. At the same time, the flange portion 42 fits with the limit ring 232 to ensure the installation accuracy of the bearing outer ring 4. Therefore, a flexible structure cannot be set on the limit ring 232, otherwise it will affect the installation accuracy, and the limit ring 232 is not easy to provide a large friction force to the bearing outer ring 4. Therefore, by setting the inner extension portion 251, when the rubber resistance-enhancing block 25 is forcefully squeezed to provide friction to the end face of the bearing outer ring 4, the axial groove 253 expands, so that the inner extension portion 251 provides friction to the inner wall of the bearing outer ring 4, thereby improving the fixing effect of the bearing outer ring 4, avoiding slippage between the bearing outer ring 4 and the limit ring 232, improving the stability of the installation of the bearing outer ring 4, and enhancing the safety of the device processing.

[0047] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A precision machining device for producing motor flange bearings, characterized in that: It comprises a frame (1), on which a workpiece support unit (2), a grinding unit (3) and an abrasive feeding unit (5) are arranged; The workpiece support unit (2) comprises a mounting shaft (21), the mounting shaft (21) being used to mount a bearing outer ring (4), the grinding unit (3) comprising a grinding wheel (32), the grinding wheel (32) comprising an outer ring grinding surface (321) and a flange grinding surface (322), and a missing area (33) is formed at the junction of the outer ring grinding surface (321) and the flange grinding surface (322) and at the junction of the outer ring (41) and the flange (42); The abrasive feeding unit (5) comprises a feeding pipe (51), the bottom output port of the feeding pipe (51) is arranged corresponding to the missing area (33), an abrasive material box (53) is arranged on the frame (1), and the outer ring portion (41) is connected to the abrasive material box (53) through the abrasive material pipe (511). During grinding, the feeding pipe (51) transports abrasive particle material to the missing area (33).

2. The precision machining device for producing motor flange bearings according to claim 1, characterized in that: The workpiece support unit (2) further comprises a drive machine (22), wherein the drive machine (22) comprises a transverse feed drive (221) and a longitudinal feed drive (222), wherein the transverse feed drive (221) is used to drive the mounting shaft (21) to move transversely along the axial direction of the mounting shaft (21), and the transverse feed drive (221) is used to drive the mounting shaft (21) to move longitudinally, wherein the longitudinal feed drive (222) is mounted on the frame (1), wherein the transverse feed drive (221) is mounted on the output end of the longitudinal feed drive (222), and wherein the mounting shaft (21) is mounted on the output end of the transverse feed drive (221), wherein the drive machine (22) further comprises a drive motor for driving the mounting shaft (21) to rotate, and wherein the grinding unit (3) further comprises a grinding machine (31), wherein the grinding machine (31) is used to drive the grinding wheel (32) to rotate.

3. The precision machining device for producing motor flange bearings according to claim 2, characterized in that: The abrasive feeding unit (5) further comprises a feeding drive unit (52), wherein the feeding drive unit (52) is used to drive the feeding tube (51) to move, and the feeding drive unit (52) comprises a transverse drive (521) and a vertical drive (522), wherein the transverse drive (521) is mounted on the frame (1), and the vertical drive (522) is mounted on the output end of the transverse drive (521), and the feeding tube (51) is fixedly mounted on the output end of the vertical drive (522), wherein the transverse drive (521) is used to drive the feeding tube (51) to move transversely, and the vertical drive (522) is used to drive the feeding tube (51) to move vertically.

4. The precision machining device for producing motor flange bearings according to claim 3 is characterized in that: The abrasive feeding unit (5) further comprises a material stopper (55), wherein the material stopper (55) is fixedly mounted on the frame (1), the material stopper (55) is located above the position where the outer ring grinding surface (321) and the outer ring (41) are in contact with each other, and the end of the material stopper (55) is arranged close to the missing area (33).

5. The precision machining device for producing motor flange bearings according to claim 4, characterized in that: The frame (1) is also provided with an adhesive material box (54), the feed pipe (51) is connected to the adhesive material box (54) via an adhesive material pipe (512), the adhesive material box (54) stores adhesive with viscosity, and the adhesive material pipe (512) is provided with a pump, and when in use, the adhesive is input into the feed pipe (51) via the pump.

6. The precision machining device for producing motor flange bearings according to claim 5, characterized in that: The frame (1) is also provided with a power rope (6), the power rope (6) passes through the missing area (33), and the portion of the power rope (6) that passes through the missing area (33) moves downward, and the diameter value of the missing area (33) is smaller than the range value of the missing area (33).

7. The precision machining device for producing motor flange bearings according to claim 6, characterized in that: The frame (1) is provided with a support guide wheel group (61), the support guide wheel group (61) is composed of a plurality of guide wheels, the power rope (6) is a coil structure, the power rope (6) is wound around each guide wheel and forms a vertical portion passing through the missing area (33), wherein one or more guide wheels are driven to rotate by a motor.

8. The precision machining device for producing motor flange bearings according to claim 7, characterized in that: A dust collector (13) is provided inside the frame (1), and the dust collector (13) is used to collect part of the dust generated by grinding. A mesh plate (11) is provided on the frame (1), and the workpiece support unit (2) and the grinding unit (3) are both mounted on the mesh plate (11). A recovery hopper (12) is provided at the bottom of the mesh plate (11), and the recovery hopper (12) is used to recover fallen abrasive particles.

9. The precision machining device for producing motor flange bearings according to claim 8, characterized in that: The mounting shaft (21) fixes the bearing outer ring (4) via a fixing assembly (23). The fixing assembly (23) comprises a positioning step shaft (231). The positioning step shaft (231) is fixedly mounted on the end of the mounting shaft (21). A stop ring (232) for blocking and limiting the flange portion (42) is fixedly mounted on the positioning step shaft (231). The outer diameter of the positioning step shaft (231) is the same as the inner diameter of the bearing outer ring (4). An end of the positioning step shaft (231) away from the stop ring (232) is fixedly connected to a threaded column (233). The fixing assembly (23) further comprises a threaded sleeve (24). The threaded sleeve (24) is threadedly sleeved on the threaded column (233). A rubber resistance increasing block (25) is fixedly connected to a side of the threaded sleeve (24) close to the bearing outer ring (4). The rubber resistance increasing block (25) contacts an end surface of the bearing outer ring (4) away from the flange portion (42).

10. The precision machining device for producing motor flange bearings according to claim 9, characterized in that: The length of the positioning step shaft (231) is smaller than the length of the bearing outer ring (4); the rubber resistance increasing block (25) is provided with an inner extension portion (251) at a position close to the inside of the bearing outer ring (4); the inner extension portion (251) contacts the inner wall of the bearing outer ring (4) and is used to provide friction force to the inner wall of the bearing outer ring (4); a radial groove (252) is provided in the rubber resistance increasing block (25); an axial groove (253) is provided in the inner extension portion (251); and the radial groove (252) is connected to the axial groove (253).

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