A precision machining device for the production of motor flange bearings

Abstract

The present invention discloses a precision machining device for the production of motor flange bearings, specifically relating to the technical field of bearing processing. The device includes a frame, on which a workpiece support unit, a grinding unit, and an abrasive feeding unit are provided. The workpiece support unit includes a mounting shaft, and the grinding unit includes a grinding wheel. An omission area is formed at the junction of the grinding surface of the outer ring part and the grinding surface of the flange part and at the junction of the outer ring part and the flange part. The abrasive feeding unit includes a feeding pipe, which conveys abrasive particle materials to the omission area. The present invention uses the feeding pipe to supplement the abrasive particles into the omission area, and under the movement of the grinding wheel and the bearing outer ring, the abrasive particles continuously form a movement at the junction area of the outer ring part and the flange part in the omission area, and form the grinding process of this area, so as to supplement the grinding omission that the grinding wheel cannot fully contact the junction of the outer ring part and the flange part, ensure the grinding accuracy of the device, and improve the processing quality of the product.

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 at the edge of the grinding wheel (the intersection of the circumferential surface and the end plane of the grinding wheel), stress is prone to concentration. Therefore, a certain chamfer is usually set, and the existence of this chamfer leads to the formation of an area where grinding is missed. Moreover, during use, the material at the edge is more likely to fall off, resulting in a lack of grinding at the intersection between the flange and the outer ring of the bearing during grinding, which easily affects the grinding accuracy and reduces the product quality. Summary of the Invention

[0007] A precision machining device for the production of motor flange bearings provided by the present invention aims to solve the following problem: In existing synchronous grinding equipment, due to the chamfer and material shedding at the edge of the grinding wheel, there is a lack of grinding at the intersection between the flange and the outer ring of the bearing during grinding, which affects the grinding accuracy and reduces the product quality.

[0008] To achieve the above object, the present invention provides the following technical solution: A precision machining device for the production of motor flange bearings includes a frame, on which a workpiece support unit, a grinding unit, and an abrasive feeding unit are provided;

[0009] The workpiece support unit includes a mounting shaft for mounting the outer ring of the bearing. The grinding unit includes a grinding wheel, which includes an outer ring part grinding surface and a flange part grinding surface. An omission area is formed at the intersection of the outer ring part grinding surface and the flange part grinding surface and at the intersection of the outer ring part and the flange part;

[0010] The abrasive feeding unit includes a feeding pipe. The bottom outlet of the feeding pipe is arranged corresponding to the omission area. An abrasive material box is provided on the frame. The feeding pipe is connected to the abrasive material box through an abrasive material pipe. During grinding, the feeding pipe conveys abrasive particle materials to the omission area.

[0011] In a preferred embodiment, the workpiece support unit further includes a driving machine, which includes a lateral feeding driver and a longitudinal feeding driver. The lateral feeding driver is used to drive the mounting shaft to move horizontally along the axial direction of the mounting shaft, and the longitudinal feeding driver is used to drive the mounting shaft to move longitudinally. The longitudinal feeding driver is mounted on the frame, the lateral feeding driver is mounted on the output end of the longitudinal feeding driver, the mounting shaft is mounted on the output end of the lateral feeding driver. The driving machine further includes a driving motor for driving the mounting shaft to rotate, and the grinding unit further includes a grinding machine for driving the grinding wheel to rotate.

[0012] In a preferred embodiment, the abrasive feeding unit further includes a feeding driving unit for driving the feeding pipe to move. The feeding driving unit includes a lateral driver and a vertical driver. The lateral driver is installed on the frame, the vertical driver is installed on the output end of the lateral driver, and the feeding pipe is fixedly installed on the output end of the vertical driver. The lateral driver is used to drive the feeding pipe to move laterally, and the vertical driver is used to drive the feeding pipe to move vertically up and down.

[0013] In a preferred embodiment, the abrasive feeding unit further includes a material stopper fixedly installed on the frame. The material stopper is located above the fitting position of the outer ring part polishing surface and the outer ring part, and the end of the material stopper is close to the omission area.

[0014] In a preferred embodiment, an adhesive tank is further provided on the frame. The feeding pipe is communicated with the adhesive tank through an adhesive pipe. The adhesive tank stores a viscous adhesive, and a pump is provided on the adhesive pipe. During use, the adhesive is input into the feeding pipe through the pump.

[0015] In a preferred embodiment, a power rope is further provided on the frame. The power rope passes through the omission area, and the part of the power rope passing through the omission area moves downward. The power rope does not touch the grinding wheel and the bearing outer ring.

[0016] In a preferred embodiment, a support guide wheel group is provided on the frame. The support guide wheel group is composed of multiple guide wheels. The power rope is in a coil structure and is wound around each guide wheel, forming a vertical part passing through the omission area. One or more of the guide wheels are driven to rotate by a motor.

[0017] In a preferred embodiment, a dust collector is provided inside the frame for collecting part of the dust generated by grinding. A perforated plate is provided on the frame. The workpiece support unit and the grinding unit are both installed on the perforated plate. A recovery hopper is provided at the bottom of the perforated plate for recovering the falling abrasive particles.

[0018] In a preferred embodiment, the bearing outer ring is fixed by the mounting shaft through a fixing component. The fixing component includes a positioning stepped shaft fixedly installed at the end of the mounting shaft. A limiting retaining ring for blocking and limiting the flange part is fixedly installed on the positioning stepped shaft. The outer diameter of the positioning stepped shaft is the same as the inner diameter of the bearing outer ring. A threaded column is fixedly connected to the end of the positioning stepped shaft away from the limiting retaining ring. The fixing component further includes a threaded sleeve threadedly sleeved on the threaded column. A rubber resistance increasing block is fixedly connected to the side of the threaded sleeve close to the bearing outer ring, and the rubber resistance increasing block contacts the end face of the bearing outer ring away from the flange part.

[0019] In a preferred embodiment, the length of the positioning stepped shaft is less than the length of the outer bearing ring. An inner extension part is provided at a position near the inside of the outer bearing ring. The inner extension part contacts the inner wall of the outer bearing ring and is used to provide frictional force to the inner wall of the outer bearing ring. Radial grooves are provided in the rubber resistance increasing block, and axial grooves are provided in the inner extension part. The radial grooves communicate with the axial grooves.

[0020] The beneficial effects of the present invention are as follows: When grinding in the present invention, abrasive particles are supplemented into the missing area by using a feeding pipe. Under the movement of the grinding wheel and the outer bearing ring, the abrasive particles continuously form a movement at the boundary area between the missing area and the outer ring part and the flange part, and grinding processing of this area is formed to supplement the grinding omission at the junction of the outer ring part and the flange part that the grinding wheel cannot fully contact. When breakdowns and potholes occur at the position of the grinding wheel 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 that the processing quality of the product is affected due to material loss at the edge of the grinding wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0022] Figure 2 It is the front view of the present invention.

[0023] Figure 3 It is the front view of the processing process of the present invention.

[0024] Figure 4 It is the left view of the internal structure of the frame of the present invention.

[0025] Figure 5 It is a schematic diagram of the structure of the abrasive feeding unit of the present invention.

[0026] Figure 6 It is the front view when the grinding wheel of the present invention grinds the outer bearing ring.

[0027] Figure 7 It is the left view when the grinding wheel of the present invention grinds the outer bearing ring.

[0028] Figure 8 It is the top view when the grinding wheel of the present invention grinds the outer bearing ring

[0029] Figure 9 It is a schematic diagram of the main viewing direction when the material blocking device of the present invention restricts the falling abrasive.

[0030] Figure 10 It is the left view when the grinding wheel of the present invention grinds the outer bearing ring after adding a power rope.

[0031] Figure 11Top view of the power rope of the present invention for promoting the movement of abrasives in the omission area.

[0032] Figure 12 Installation diagram of the power rope of the present invention.

[0033] Figure 13 Schematic structural diagram of the flanged bearing outer ring processed by the present invention.

[0034] Figure 14 Schematic overall structure diagram of the fixing component of the present invention.

[0035] Reference numerals: 1, frame; 11, mesh plate; 12, recovery hopper; 13, dust collector; 2, workpiece support unit; 21, mounting shaft; 22, drive machine; 221, lateral feed driver; 222, longitudinal feed driver; 23, fixing component; 231, positioning step shaft; 232, limiting retaining ring; 233, threaded column; 24, threaded sleeve; 25, rubber resistance increasing block; 251, inner extending part; 252, radial groove; 253, axial groove; 3, grinding unit; 31, grinding machine; 32, grinding wheel; 321, outer ring part grinding surface; 322, flange part grinding surface; 33, omission area; 4, bearing outer ring; 41, outer ring part; 42, flange part; 5, abrasive feeding unit; 51, feeding pipe; 511, abrasive material pipe; 512, adhesive material pipe; 52, feeding drive unit; 521, lateral driver; 522, vertical driver; 53, abrasive material box; 54, adhesive material box; 55, material baffle; 6, power rope; 61, support guide wheel set. Detailed implementation manners

[0036] The present application will be further described in detail below with reference to the accompanying drawings. It is necessary to point out here that the following specific implementation manners are only used to further illustrate the present application and should not be construed as limiting the protection scope of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application according to the above application content.

[0037] Refer to the attached drawings of the specification Figures 1 to 14, A precision machining device for the production of motor flange bearings, including a frame 1. A workpiece support unit 2, a grinding unit 3, and an abrasive feeding unit 5 are arranged on the frame 1. The workpiece support unit 2 includes a mounting shaft 21 which is rotatably arranged and is used for mounting the outer ring 4 of the bearing. Referring to the dust collector 13 in the instruction manual drawings, the outer ring 4 of the bearing consists of an outer ring part 41 and a flange part 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 part grinding surface 321 for grinding the outer surface of the outer ring part 41, and the end surface of the grinding wheel 32 is a flange part grinding surface 322 for grinding the surface of the flange part 42. Among them, in order to avoid material fragmentation, a small chamfer is made at the junction of the outer ring part grinding surface 321 and the flange part grinding surface 322. During grinding, the outer ring part grinding surface 321 fits the outer ring part 41, and the flange part grinding surface 322 fits the flange part 42. Due to the existence of the chamfer, an omission area 33 is formed at the junction of the outer ring part grinding surface 321 and the flange part grinding surface 322 and the junction of the outer ring part 41 and the flange part 42.

[0038] The abrasive feeding unit 5 includes a feeding pipe 51. The bottom outlet of the feeding pipe 51 is arranged corresponding to the omission area 33. An abrasive material box 53 is arranged on the frame 1. The feeding pipe 51 is connected to the abrasive material box 53 through an abrasive material pipe 511. The abrasive material box 53 stores abrasive particles. As for the size and material of the particles, they can be determined according to specific grinding requirements. The specific material can refer to the abrasive material of the grinding wheel 32 used. The abrasive in the abrasive material box 53 can be conveyed into the feeding pipe 51 and fed into the area of the omission area 33 by the feeding pipe 51. A control valve can be arranged on the abrasive material pipe 511 to control the feeding pipe 51 to feed only during grinding.

[0039] Specifically, during processing, the grinding wheel 32 contacts the outer ring 4 of the bearing. The mounting shaft 21 drives the outer ring 4 of the bearing and the grinding wheel 32 to rotate synchronously in the opposite direction, or synchronously in the same direction with a differential speed (the rotational speed of the grinding wheel 32 is greater than the rotational speed of the outer ring 4 of the bearing) for grinding. Since there is no physical structure of the grinding wheel 32 contacting the outer ring 4 of the bearing at the omission area 33, therefore, by filling abrasive particles into the omission area 33, the abrasive particles enter the omission area 33. Referring to the instruction manual attachment Figure 6 and Figure 7 , and under the movement of the grinding wheel 32 and the outer ring 4 of the bearing, the abrasive particles continuously move at the junction area of the outer ring part 41 and the flange part 42 at the omission area 33, and grinding processing of this area is formed to supplement the grinding omission at the junction of the outer ring part 41 and the flange part 42 that the grinding wheel 32 cannot fully contact. And since both the outer ring 4 of the bearing and the grinding wheel 32 are circular structures. Referring to the instruction manual attachment Figure 7, a triangular - like area is formed above the missing area 33. During the gradual downward movement of the abrasive grains, gradual contraction and extrusion will occur. Therefore, when the abrasive grains enter the missing area 33, they are mutually extruded, thus also forming extrusion on the surface at the junction of the outer ring part 41 and the flange part 42. Therefore, when the abrasive grains move relatively, a grinding effect is formed.

[0040] Meanwhile, the abrasive grains output by the feed pipe 51 are flowing. When the grinding wheel 32 has breakage and pitting at the position corresponding to the missing area 33, during grinding, the breakage and pitting areas will be filled with flowing abrasive grains before contacting the outer ring 4 of the bearing, thereby improving the grinding and 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 32.

[0041] It should be noted that referring to the attached drawings of the specification Figure 1 and Figure 3 , the workpiece support unit 2 further includes a driving machine 22. The driving machine 22 includes a transverse feed driver 221 and a longitudinal feed driver 222. The transverse feed driver 221 is used to drive the mounting shaft 21 to move horizontally along its axial direction to drive the flange part 42 to fit the flange grinding surface 322, and the longitudinal feed driver 222 is used to drive the mounting shaft 21 to move longitudinally to drive the outer ring part 41 to fit the outer ring grinding 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, the mounting shaft 21 is installed on the output end of the transverse feed driver 221. The driving machine 22 further includes a driving motor for driving the mounting shaft 21 to rotate, and this motor is installed on the transverse feed driver 221. The grinding unit 3 further includes a grinding machine 31, and the grinding machine 31 is installed on the frame 1. The grinding machine 31 has a built - in motor, and this built - in motor is used to drive the grinding wheel 32 to rotate.

[0042] Furthermore, referring to the attached drawings of the specification Figure 1 and Figure 5 , the abrasive feed unit 5 further includes a feed driving unit 52. The feed driving unit 52 is used to drive the feed pipe 51 to move. Among them, the feed driving unit 52 includes a transverse driver 521 and a vertical driver 522. The transverse driver 521 is installed on the frame 1, the vertical driver 522 is installed on the output end of the transverse driver 521, and the feed pipe 51 is fixedly installed on the output end of the vertical driver 522. The transverse driver 521 is used to drive the feed pipe 51 to move horizontally, and the vertical driver 522 is used to drive the feed pipe 51 to move vertically up and down. Furthermore, the position of the feed pipe 51 can be adjusted during use, so that the bottom discharge port of the feed pipe 51 can more accurately align with the missing area 33.

[0043] It should be noted that the lateral feed driver 221, longitudinal feed driver 222, lateral driver 521, and vertical driver 522 used in the above embodiments are all common linear drive structures, such as linear motors, cylinder structures, hydraulic cylinder structures, etc., which will not be elaborated in this example.

[0044] In the above embodiments, in order to better concentrate the abrasive particles in the omission area 33, the present embodiment also provides the following technical solutions. Specifically, referring to the attached drawings of the specification Figure 8 and Figure 9 , the abrasive feeding unit 5 further includes a baffle 55. The baffle 55 is fixedly installed on the frame 1 (it can be directly installed on the outer shell of the grinding machine 31). The baffle 55 is located above the fitting position of the outer ring part grinding surface 321 and the outer ring part 41, and the end of the baffle 55 is close to the omission area 33. The baffle 55 is a rod structure. During actual grinding, the baffle 55 does not contact the outer ring part 41 and the outer ring part grinding surface 321, so it is not affected. Moreover, the feeding pipe 51 itself is aligned with the omission area 33. Therefore, almost few abrasive particles fall into the area outside the omission area 33 under the blockage of the baffle 55. In addition, the bearing outer ring 4 and the omission area 33 can be inclined, so that the end of the outer ring part 41 close to the flange part 42 is slightly inclined downward, so that the abrasive particles can automatically approach the flange part 42 under the action of gravity and replenish the omission area 33.

[0045] In order to make the abrasive particles adhere to each other and not easily disperse, the present embodiment also provides the following technical solutions. Referring to the attached drawings of the specification Figure 1 and Figure 5 , an adhesive tank 54 is also provided on the frame 1. The feeding pipe 51 is communicated with the adhesive tank 54 through an adhesive pipe 512. The adhesive tank 54 stores an adhesive with viscosity. A pump is provided on the adhesive pipe 512. During actual use, the pump is used to synchronously input the adhesive into the feeding pipe 51, so that the feeding pipe 51 outputs the abrasive particles with the adhesive, and further makes the abrasive particles not easily disperse and have a certain adhesive force between each other. When passing through the omission area 33, better grinding can be carried out. Among them, the adhesive is preferably a lubricating oil or grease with a certain viscosity.

[0046] In order to improve the efficiency of the abrasive particles entering the omission area 33 for supplementary grinding, the present embodiment also provides the following technical solutions. Specifically, referring to the attached drawings of the specification Figure 10 , a power rope 6 is also provided on the frame 1. The power rope 6 passes through the omission area 33, and the part of the power rope 6 passing through the omission area 33 moves downward. Referring to the attached drawings of the specification Figure 11, the power cord 6 does not touch the grinding wheel 32 and the outer ring of the bearing 4. Thus, during actual use, under the downward driving of the power cord 6, abrasive particles can be promoted to enter and pass through the omission area 33, and blockage of abrasives between the outer ring of the bearing 4 and the grinding wheel 32 can be avoided. At the same time, the movement of the power cord 6 can also drive the abrasives, accelerating the relative friction at the junction of the outer ring part 41 and the flange part 42, and improving the grinding efficiency.

[0047] Further, referring to the attached drawings of the specification Figure 12 , a support guide wheel group 61 is provided on the frame 1. The support guide wheel group 61 is composed of multiple guide wheels (each guide wheel can be installed on the outer shell of the grinding machine 31). The power cord 6 is in a coil structure. The power cord 6 is wound around each guide wheel and forms a vertical part passing through the omission area 33. One or more of the guide wheels are driven to rotate by a motor to drive the power cord 6. The power cord 6 can be made of a high-strength braided wire structure or a metal wire structure. However, 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.

[0048] Referring to the attached drawings of the specification Figure 4 , a dust collector 13 is provided inside the frame 1. The dust collector 13 is used to collect some of the dust generated during grinding. A mesh plate 11 is provided on the frame 1. The workpiece support unit 2 and the grinding unit 3 are both installed on the mesh plate 11. A recovery hopper 12 is provided at the bottom of the mesh plate 11 for recovering the falling abrasive particles.

[0049] Referring to the attached drawings of the specification Figure 14 , the mounting shaft 21 fixes the outer ring of the bearing 4 through a fixing component 23. The fixing component 23 includes a positioning stepped shaft 231. The positioning stepped shaft 231 is fixedly installed at the end of the mounting shaft 21. A limiting retaining ring 232 for blocking and limiting the flange part 42 is fixedly installed on the positioning stepped shaft 231. The outer diameter of the positioning stepped shaft 231 is the same as the inner diameter of the outer ring of the bearing 4. A threaded column 233 is fixedly connected to the end of the positioning stepped shaft 231 away from the limiting retaining ring 232. The fixing component 23 further includes 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 the side of the threaded sleeve 24 close to the outer ring of the bearing 4. The rubber resistance increasing block 25 contacts the end face of the outer ring of the bearing 4 away from the flange part 42 to provide frictional force to the end face of the outer ring of the bearing 4. The length of the positioning stepped shaft 231 is less than the length of the outer ring of the bearing 4. During installation, the outer ring of the bearing 4 is sleeved on the positioning stepped shaft 231. An inner extending part 251 is provided at a position of the rubber resistance increasing block 25 close to the inside of the outer ring of the bearing 4. The inner extending part 251 contacts the inner wall of the outer ring of the bearing 4 to provide frictional force to the inner wall of the outer ring of the bearing 4. A radial groove 252 is provided in the rubber resistance increasing block 25, and an axial groove 253 is provided in the inner extending part 251. The radial groove 252 communicates with the axial groove 253.

[0050] During use, the threaded sleeve 24 is tightened so that the rubber resistance increasing block 25 presses against the end face of the outer ring 4 of the bearing and provides frictional resistance. At the same time, the flange portion 42 fits with the limit retaining ring 232 to ensure the installation accuracy of the outer ring 4 of the bearing. Therefore, a flexible structure cannot be provided on the limit retaining ring 232, otherwise the installation accuracy will be affected, and it is not easy for the limit retaining ring 232 to provide a large frictional force to the outer ring 4 of the bearing. Therefore, by providing the inward extending portion 251, when the rubber resistance increasing block 25 is strongly pressed to provide a frictional force to the end face of the outer ring 4 of the bearing, the axial groove 253 expands, so that the inward extending portion 251 provides a frictional force to the inner wall of the outer ring 4 of the bearing, thereby improving the fixing effect on the outer ring 4 of the bearing, avoiding slipping between the outer ring 4 of the bearing and the limit retaining ring 232, improving the stability of the installation of the outer ring 4 of the bearing, and enhancing the safety of the device processing.

[0051] The above-described embodiments merely represent several implementation manners of the present invention, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these 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), the feeding pipe (51) is connected to the abrasive material box (53) via an abrasive material pipe (511), and during grinding, the feeding pipe (51) transports abrasive particle material to the missing area (33); 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.

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 longitudinal feed drive (222) 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 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 power rope (6) does not touch the grinding wheel (32) and the bearing outer ring (4).

6. The precision machining device for producing motor flange bearings according to claim 5, 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.

7. The precision machining device for producing motor flange bearings according to claim 6, 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.

8. The precision machining device for producing motor flange bearings according to claim 7, 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).

9. The precision machining device for producing motor flange bearings according to claim 8, 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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