A high-precision grinding equipment for motor rotor brackets

Abstract

This invention provides a high-precision grinding equipment for motor rotor supports, belonging to the technical field of motor processing equipment. It solves the technical problems of existing motor rotor support grinding equipment, such as the inability to integrate into production lines and low efficiency. The equipment includes a main frame and a circulating conveyor line. Inside the main frame, there are sequentially arranged disc grinding mechanisms, broaching mechanisms, roller grinding mechanisms, and square hole grinding mechanisms. Four clamping and positioning mechanisms are also located inside the main frame. A main control box and a vacuum cleaner are located on the front side of the main frame. The air outlet of the vacuum cleaner is connected to the disc grinding mechanism via an air pipe. A flipping detection mechanism is located on the right side of the main frame. This invention, through integrated design, combines the four processes of disc grinding, broaching, roller grinding, and square hole grinding with a circulating conveyor line, and with the automatic clamping and positioning mechanisms, achieves continuous automatic processing of both sides of the rotor support, improving production efficiency and consistency of processing accuracy; it also achieves automatic separation of qualified and unqualified products.

Description

Technical Field

[0001] This invention belongs to the technical field of motor processing equipment, and relates to a grinding processing equipment, particularly a high-precision grinding processing equipment for motor rotor brackets. Background Technology

[0002] As a core component of the motor, the rotor bracket requires high-precision grinding of its permanent magnet mounting holes, spline mounting holes, and end faces. Traditional machining typically involves multiple single-function machines completing the process in stages, resulting in fragmented operations and requiring manual loading, unloading, and workpiece flipping, leading to low production efficiency and high labor intensity. Furthermore, the lack of automatic detection and feedback mechanisms between processes makes it difficult to guarantee machining accuracy, resulting in a high scrap rate. In addition, dust generated during machining, if not promptly disposed of, can affect equipment accuracy and the working environment.

[0003] Therefore, there is an urgent need for a high-precision grinding equipment for motor rotor supports that integrates multiple processes and has automatic detection and cyclic processing functions. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a high-precision grinding equipment for motor rotor supports. The technical problem this invention aims to solve is: how to combine four processes—disc grinding, broaching, roller grinding, and square hole grinding—with a circulating conveyor line, and coordinate with an automatic clamping and positioning mechanism, to achieve continuous automatic processing of both sides of the rotor support, while simultaneously realizing intelligent detection, sorting, and closed-loop control, and possessing efficient dust removal and precise positioning functions.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] A high-precision grinding machine for motor rotor brackets includes a main frame and a circulating conveyor line running through the main frame. Inside the main frame, from front to back, are arranged a disc grinding mechanism, a broaching mechanism, a roller grinding mechanism, and a square hole grinding mechanism, all located above the circulating conveyor line. Inside the main frame, from front to back, are four clamping and positioning mechanisms, located below the circulating conveyor line and directly below each of the disc grinding, broaching, roller grinding, and square hole grinding mechanisms. A main control box and a vacuum cleaner are located on the front side of the main frame. The exhaust end of the vacuum cleaner is connected to the disc grinding mechanism via an air pipe, and the exhaust end of the vacuum cleaner has a dust suction hood facing the interior of the main frame. A flip detection mechanism is located on the right side of the main frame. The mechanism is located behind the square hole grinding mechanism. Two laser detectors and four infrared sensors are installed on the circulating conveyor line. The circulating conveyor line includes a perforated conveyor section. A circulating conveyor section connected to both ends of the perforated conveyor section is located on the right side of the perforated conveyor section. The two laser detectors are respectively located at the upper ends of the perforated conveyor section and the circulating conveyor section. The laser detector located on the perforated conveyor section is located in front of the flip detection mechanism. The four infrared sensors are respectively directly below the disc grinding mechanism, the broaching mechanism, the roller grinding mechanism, and the square hole grinding mechanism. The disc grinding mechanism grinds the corresponding end face of the motor rotor support. The broaching mechanism grinds the spline mounting hole of the motor rotor support. The roller grinding mechanism performs roller grinding on the corresponding arc surface of the motor rotor support. The square hole grinding mechanism grinds the permanent magnet mounting square hole of the motor rotor support.

[0007] The working principle of this invention is as follows: The motor rotor bracket is conveyed through the input end of the circulating conveyor line within the main frame. When the motor rotor bracket is conveyed to the corresponding infrared sensor position, the corresponding clamping and positioning mechanism rises to clamp and fix it. Subsequently, a disc grinding mechanism, a broaching mechanism, a roller grinding mechanism, and a square hole grinding mechanism, arranged sequentially from front to back, perform high-precision grinding on different parts of one side of the motor rotor bracket. Specifically, the disc grinding mechanism grinds the corresponding end face of the motor rotor bracket, the broaching mechanism grinds the spline mounting hole of the motor rotor bracket, the roller grinding mechanism performs roller grinding on the corresponding arc surface of the motor rotor bracket, and the square hole grinding mechanism grinds the permanent magnet mounting square hole of the motor rotor bracket. During processing, a vacuum cleaner removes dust through the disc grinding mechanism connected by an air pipe and the dust collection hood facing the inside of the main frame. After processing is completed, the motor rotor bracket continues to be conveyed... The motor rotor support is sent to the laser detector at the front of the flipping detection mechanism for inspection. It then undergoes a second inspection by the flipping detection mechanism at the rear. If it passes the second inspection, the flipping detection mechanism flips the motor rotor support, and the circulating conveyor line transports it back to the input end of the circulating conveyor line. At this point, the laser detector at the upper end of the circulating conveyor section performs a third inspection of the motor rotor support to ensure inspection effectiveness. A motor rotor support with one side polished and a new, unpolished motor rotor support alternately enter the input end of the circulating conveyor line, where different parts on the other side of the motor rotor support undergo high-precision grinding. It is then inspected again by the laser detector and the flipping detection mechanism. If it passes the inspection, it is sent out from the qualified output end of the circulating conveyor line. If any inspection fails, it is sent out from the unqualified output end of the circulating conveyor line and flipped again using the laser detector.

[0008] The circulating conveyor line includes a perforated conveyor section with several evenly distributed clearance holes on its conveyor chain. The perforated conveyor section runs through the main frame. A circulating conveyor section is connected to both ends of the perforated conveyor section on its right side. A guiding semi-arc conveyor is connected to the right side of the circulating conveyor section. Both the perforated conveyor section and the guiding semi-arc conveyor have inclined discharge conveyors at their ends. A sorting side deflector plate is hinged to the opposite side of the connection between the rear side of the perforated conveyor section and the circulating conveyor section. A side-deflector electric push rod is provided between the sorting side deflector plate and the perforated conveyor section. A sorting side deflector plate is also connected to the opposite side of the connection between the circulating conveyor section and the guiding semi-arc conveyor section. A side-deflector electric push rod is provided between the sorting side deflector plate and the circulating conveyor section. Two laser detectors are respectively located at the upper ends of the perforated conveyor section and the circulating conveyor section.

[0009] Using the above structure, a perforated conveyor section alternately transports motor rotor brackets with one side polished and new, unpolished motor rotor brackets. The clearance holes on the conveyor chain provide upward space for the clamping and positioning mechanism below. After one side of the motor rotor bracket is processed and inspected, the side-push electric push rod at the rear of the perforated conveyor section drives the sorting side pusher plate, pushing the motor rotor bracket that needs to be processed on the other side into the circulating conveyor section. This motor rotor bracket flows back to the input end of the perforated conveyor section via the circulating conveyor section, realizing the circulation of the motor rotor bracket. Motor rotor brackets that have passed polishing on both sides are sent from the output end of the perforated conveyor section to the discharge conveyor at its end. The laser detector at the upper end of the circulating conveyor section performs three inspections to ensure inspection effectiveness.

[0010] If the test fails, the side-push electric push rod at the rear of the perforated conveyor section drives the sorting side deflector plate to push the motor rotor bracket into the circulating conveyor section. If the laser detector test still fails, the side-push electric push rod at the circulating conveyor section drives the sorting side deflector plate to push the motor rotor bracket into the guide semi-arc conveyor. The unqualified motor rotor bracket is sent from the output end of the guide semi-arc conveyor to the discharge conveyor at its end.

[0011] The disc-type grinding mechanism includes a U-shaped frame, which is fixed to the inner top of the main frame. A vertically downward-mounted lifting electric push rod is fixed on the U-shaped frame. The telescopic end of the lifting electric push rod passes through the U-shaped frame and a grinding disc motor is fixed on it. A grinding table is fixed on the output shaft of the grinding disc motor. Several air jet hoses are provided on the grinding table. The ends of the several air jet hoses are connected to the same air inlet hose, which is connected to the air outlet of the vacuum cleaner.

[0012] Using the above structure, the motor rotor support is fixed to the top of the main frame via a U-shaped frame. After the clamping and positioning mechanism fixes the motor rotor support, the lifting electric push rod drives the grinding disc motor and the grinding table to descend vertically to the processing position. The grinding disc motor drives the grinding table to rotate back and forth, performing high-precision grinding on the corresponding end face of the motor rotor support. During the grinding process, the air outlet of the vacuum cleaner delivers airflow to several air jet hoses through the air inlet hose. The air jet hoses spray the airflow onto the grinding area, which serves to clean the grinding debris and assist in heat dissipation. After grinding is completed, the lifting electric push rod resets, driving the grinding table to rise and move away from the workpiece.

[0013] The broaching mechanism includes a crossbeam fork plate, which is fixed to the upper end of the perforated conveyor section. A vertical beam is fixed to the upper end of the crossbeam fork plate, and an adjustment motor is fixed to the upper end of the vertical beam. A lifting screw is fixed to the output shaft of the adjustment motor. A sliding seat is slidably provided on the side of the vertical beam. The lifting screw is connected to the sliding seat in a transmission manner. A broaching rod is detachably provided at the lower end of the sliding seat. A conical head is provided at the lower end of the broaching rod, and the broaching rod is located directly above the crossbeam fork plate.

[0014] Using the above structure, the crossbeam fork plate is fixed above the perforated conveyor section. After the clamping and positioning mechanism fixes the motor rotor bracket, the adjustment motor starts and drives the sliding seat to slide downward along the vertical beam through the lifting screw. The sliding seat drives the detachable broaching rod at the lower end to reciprocate and gradually descend, so that the broaching rod passes through the crossbeam fork plate and enters the spline mounting hole of the motor rotor bracket. The conical head at the lower end of the broaching rod can be quickly inserted into the spline mounting hole of the motor rotor bracket to achieve precise positioning and forming. After processing, the adjustment motor reverses, and the lifting screw drives the sliding seat and broaching rod to rise and reset, leaving the workpiece.

[0015] The roller grinding mechanism includes a dual-axis adjustment assembly, which is located at the upper end of the perforated conveyor section. The dual-axis adjustment assembly is equipped with a fixing plate, and a grinding motor is fixed at the upper end of the fixing plate. Two drive shaft sleeves are fixed at the lower end of the fixing plate. The rotating shafts of the two drive shaft sleeves are connected to the output shaft of the grinding motor. Grinding rollers are detachably mounted at the lower ends of the rotating shafts of the two drive shaft sleeves.

[0016] Using the above structure, a dual-axis adjusting assembly is set at the upper end of the perforated conveyor section. After the clamping and positioning mechanism fixes the motor rotor support, the dual-axis adjusting assembly drives the fixing plate to move to the processing position. The grinding motor at the upper end of the fixing plate starts and drives the shafts of the two drive shaft sleeves to rotate through the transmission connection. The grinding rollers at the lower end of the two drive shaft sleeves rotate at high speed to perform roller grinding on the corresponding arc surface or specific parts of the motor rotor support. The grinding rollers are detachable for easy replacement according to processing needs. After processing is completed, the dual-axis adjusting assembly drives the fixing plate and grinding rollers to reset and move away from the workpiece.

[0017] The square hole grinding mechanism includes a dual-axis adjustment assembly, which is located at the upper end of the perforated conveyor section. The dual-axis adjustment assembly is equipped with a lifting seat, and two hinged linkage plates are hinged to the lifting seat. The two hinged linkage plates are connected by a transmission. One of the hinged linkage plates is hinged to the lifting seat with a reciprocating electric push rod. The lower ends of the two hinged linkage plates are hinged to a reciprocating seat, and the lower end of the reciprocating seat is detachably equipped with a grinding file.

[0018] Using the above structure, a dual-axis adjusting assembly is set at the upper end of the perforated conveyor section. After the clamping and positioning mechanism fixes the motor rotor bracket, the dual-axis adjusting assembly drives the lifting seat to move to the square hole processing position, causing the square hole grinding mechanism to reciprocate up and down. The grinding file then reciprocates up and down, performing high-precision grinding on the square hole for mounting the permanent magnet of the motor rotor bracket. The reciprocating electric push rod on the lifting seat is activated, pushing the hinged linkage plate connected to it to swing. Through the two transmission-connected hinge linkage plates, the reciprocating seat is driven to swing back and forth. The detachable grinding file at the lower end of the reciprocating seat then reciprocates back and forth, performing high-precision grinding on the bottom of the square hole for mounting the permanent magnet of the motor rotor bracket. The grinding file adopts a detachable design, which is convenient for replacement according to processing needs. After processing is completed, the reciprocating electric push rod is reset, and the dual-axis adjusting assembly drives the square hole grinding mechanism, i.e., the grinding file, to leave the motor rotor bracket.

[0019] The dual-axis adjustment assembly includes a horizontal beam, which is fixed to the upper end of the perforated conveyor section. A horizontally arranged horizontal electric lead screw is provided on the horizontal beam. A vertically arranged vertical electric lead screw is fixed on the moving block of the horizontal electric lead screw. A lead screw slide is fixed on the moving block of the vertical electric lead screw. A fixing plate is fixed on the lead screw slide of the dual-axis adjustment assembly of the roller grinding mechanism. A lifting seat is fixed on the lead screw slide of the dual-axis adjustment assembly of the square hole grinding mechanism.

[0020] Using the above structure, a horizontal beam is fixed to the upper end of the perforated conveyor section as the installation base; the horizontal electric lead screw drives its moving block to move horizontally, which in turn drives the vertical electric lead screw fixed on it to move horizontally; the vertical electric lead screw then drives its moving block to move vertically up and down, thereby enabling the lead screw slide to achieve precise positioning in both horizontal and vertical directions; wherein, the fixing plate of the roller grinding mechanism is fixed on the lead screw slide of the corresponding dual-axis adjustment component, and the lifting seat of the square hole grinding mechanism is fixed on the lead screw slide of the corresponding dual-axis adjustment component. Through the dual-axis movement of this component, the working position of the two grinding mechanisms is precisely adjusted so that they can accurately reach the processing station.

[0021] The clamping and positioning mechanism includes a fixed frame, on which a vertically arranged clamping electric lead screw is provided. A mounting platform is fixed on the moving block of the clamping electric lead screw, and an electric rotating disk is fixed on the mounting platform. An electric gripper is provided at the upper end of the electric rotating disk, and the electric gripper is located directly below the clearance hole at the corresponding position.

[0022] Using the above structure, the device is installed on the ground of the circulating conveyor line via a fixed frame. When the infrared sensor detects that the motor rotor bracket has been conveyed to the corresponding processing station, the clamping electric lead screw is activated, driving the mounting table to rise vertically. The mounting table drives the electric rotary table and electric grippers through the clearance holes of the perforated conveyor section, allowing the electric grippers to reach the workpiece clamping position. The electric grippers clamp the motor rotor bracket and fix it in place. The electric rotary table can adjust the angle and orientation of the motor rotor bracket according to processing needs, and the infrared sensor detects the accurate position of the motor rotor bracket. After processing is completed, the electric grippers release the workpiece, and the clamping electric lead screw drives the mounting table to descend and reset, causing the electric grippers to return to below the conveyor line, awaiting the next clamping command.

[0023] The flipping detection mechanism includes a side frame fixed to the right side of the main frame. A vertically arranged electric lead screw is mounted on the side frame. A vertical seat is mounted on the moving block of the vertical electric lead screw. A horizontal plate and a reinforcing plate are mounted on the vertical seat. The horizontal plate is located above the reinforcing plate. A vertically arranged detection electric cylinder is fixed on the horizontal plate. The telescopic end of the detection electric cylinder passes through the reinforcing plate and a pressure sensor is fixed on it. A detection seat is fixed at the lower end of the pressure sensor. A pneumatic motor is also fixed on the vertical seat. The vertical seat has a flipping shaft seat. The output shaft of the pneumatic motor is connected to the flipping shaft of the flipping shaft seat. A pneumatic gripper is fixed on the flipping shaft of the flipping shaft seat and is located directly below the detection seat.

[0024] Using the above structure, the motor rotor support is fixed to the right side of the main frame via a side bracket. When the motor rotor support is transported to the inspection station, the vertical electric screw is activated, driving the vertical seat to move vertically and adjusting the inspection and clamping height to a suitable position. The inspection electric cylinder on the vertical seat is activated, and its telescopic end pushes the pressure sensor and inspection seat downward to press and inspect the motor rotor support below. The pressure sensor provides feedback on the inspection data to determine whether the processing quality is qualified. After the inspection is completed, the inspection electric cylinder is reset, the pneumatic motor is activated, and the pneumatic gripper is driven to rotate through the flipping shaft of the flipping shaft seat. The pneumatic gripper clamps the motor rotor support and rotates with the flipping shaft to realize the flipping operation of the motor rotor support. After the flipping is completed, the pneumatic gripper releases the workpiece, and the vertical electric screw drives the vertical seat to reset, waiting for the next inspection command.

[0025] A rotor assembly includes a motor rotor bracket, which is cylindrical. Both sides of the motor rotor bracket have several circumferentially distributed square holes for mounting permanent magnets. Each square hole contains a permanent magnet with adjacent permanent magnets having opposite magnetic pole directions. Symmetrically arranged positioning holes are formed on the arc surface of the motor rotor bracket. The interior of the motor rotor bracket has spline mounting holes and several circumferentially distributed irregularly shaped ventilation holes. The spline mounting holes are located in the center of the irregularly shaped ventilation holes. Both ends of the motor rotor bracket are detachably equipped with cover plates that cover the permanent magnets inside the inner square holes for mounting permanent magnets.

[0026] With the above structure, the motor rotor support serves as the core load-bearing structure. Several circumferentially distributed square holes on both sides are used to install permanent magnets. Adjacent permanent magnets are arranged with opposite magnetic pole directions to form the required magnetic field distribution. The spline mounting holes inside the motor rotor support are used to connect with the motor shaft drive to achieve torque transmission. Several circumferentially distributed irregularly shaped ventilation holes are located around the spline mounting holes for ventilation and heat dissipation during motor operation. Symmetrical positioning holes on the arc surface of the motor rotor support are used for precise positioning during processing and assembly. Removable cover plates at both ends cover and fix the permanent magnets inside the permanent magnet mounting square holes to prevent the permanent magnets from falling off and to protect the internal structure.

[0027] Compared with existing technologies, this high-precision grinding equipment for motor rotor supports has the following advantages:

[0028] The process integrates four steps: disc grinding, broaching, roller grinding, and square hole grinding. Combined with a circulating conveyor line and an automatic clamping and positioning mechanism, it enables continuous automatic processing of the motor rotor bracket on both sides, reducing manual intervention and improving production efficiency and consistency of processing accuracy.

[0029] The machined surface is precisely positioned using an infrared sensor, combined with a laser detector and a pressure detection mechanism, and is inspected multiple times online. Once the inspection is passed, the product is automatically flipped and returned for reprocessing, while defective products are automatically diverted, ensuring that both sides of each product meet high precision requirements and achieving closed-loop quality control.

[0030] The vacuum cleaner blows away dust and debris in the grinding area through the jet hose and assists in heat dissipation, improving the processing environment; the dual-axis adjustment component enables precise positioning of the grinding mechanism in the horizontal and vertical directions, ensuring that each processing part receives high-precision grinding and adapting to the processing needs of complex structures. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall three-dimensional structure on the right side of the present invention.

[0032] Figure 2 This is a schematic diagram of the overall left-side three-dimensional structure of the present invention.

[0033] Figure 3 This is a schematic diagram of the structure of the circulating conveyor line in this invention.

[0034] Figure 4 This is a schematic diagram of the disc-type grinding mechanism in this invention.

[0035] Figure 5 This is a schematic diagram of the clamping and positioning mechanism in this invention.

[0036] Figure 6 This is a schematic diagram of the broaching mechanism in this invention.

[0037] Figure 7 This is a schematic diagram of the roller grinding mechanism in this invention.

[0038] Figure 8 This is a schematic diagram of the square hole grinding mechanism of the present invention.

[0039] Figure 9 This is a schematic diagram of the flipping detection mechanism in this invention.

[0040] Figure 10 This is a three-dimensional structural diagram of the rotor assembly in this invention.

[0041] Figure 11 This is an exploded structural diagram of the rotor assembly in this invention.

[0042] Figure 12 This is a schematic diagram of the motor rotor support structure in this invention.

[0043] In the diagram, 1. Main control box; 2. Main frame; 3. Circulating conveyor line; 4. Disc grinding mechanism; 5. Broaching mechanism; 6. Clamping and positioning mechanism; 7. Roller grinding mechanism; 8. Square hole grinding mechanism; 9. Laser detector; 10. Tilting detection mechanism; 11. Vacuum cleaner; 12. Motor rotor support; 13. Perforated conveyor section; 14. Sorting side deflector plate; 15. Discharge conveyor; 16. Side deflector electric push rod; 17. Circulating conveyor section; 18. Guide semi-arc conveyor; 19. U-shaped frame; 20. Lifting electric push rod; 21. Grinding disc motor; 22. Grinding table; 23. Air jet hose; 24. Air inlet hose; 25. Electric gripper; 26. Electric rotary disc; 27. Mounting platform; 28. Clamping electric lead screw; 29. ​​Fixed frame; 30. Vertical beam; 31. Adjustment motor; 32. Slide... 33. Moving seat; 34. Broaching rod; 35. Crossbeam fork plate; 36. Dual-axis adjusting assembly; 37. Fixed plate; 38. Grinding motor; 39. Drive shaft sleeve; 40. Grinding roller; 41. Horizontal beam; 42. Mounting base; 43. Horizontal electric lead screw assembly; 44. Lead screw slide; 45. Grinding file; 46. Reciprocating seat; 47. Hinge linkage plate; 48. Reciprocating electric push rod; 49. Lifting seat; 50. Vertical electric lead screw; 51. Side frame; 52. Vertical seat; 53. Horizontal plate; 54. Detection electric cylinder; 55. Reinforcing plate; 56. Detection seat; 57. Pneumatic gripper; 58. Tilting shaft seat; 59. Pneumatic motor; 60. Positioning hole; 61. Spline mounting hole; 62. Permanent magnet; 63. Cover plate; 64. Irregular ventilation hole; 65. Permanent magnet mounting square hole. Detailed Implementation

[0044] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0045] like Figures 1-9As shown, this high-precision grinding equipment for motor rotor brackets includes a main frame 2 and a circulating conveyor line 3 running through the main frame 2. Inside the main frame 2, from front to back, are arranged a disc grinding mechanism 4, a broaching mechanism 5, a roller grinding mechanism 7, and a square hole grinding mechanism 8, located above the circulating conveyor line 3. Inside the main frame 2, from front to back, are four clamping and positioning mechanisms 6, located below the circulating conveyor line 3 and directly below the disc grinding mechanism 4, broaching mechanism 5, roller grinding mechanism 7, and square hole grinding mechanism 8, respectively. A main control box 1 and a vacuum cleaner 11 are located on the front side of the main frame 2. The air outlet of the vacuum cleaner 11 is connected to the disc grinding mechanism 4 via an air pipe, and the air inlet of the vacuum cleaner 11 is equipped with a dust suction hood, which faces the interior of the main frame 2. A flip detection mechanism 10 is located on the right side of the main frame 2. Located behind the square hole grinding mechanism 8, the circulating conveyor line 3 is equipped with two laser detectors 9 and four infrared sensors. The circulating conveyor line 3 includes a perforated conveyor section 13, and a circulating conveyor section 17 connected to both ends of the perforated conveyor section 13 is located on the right side of the perforated conveyor section 13. The two laser detectors 9 are respectively located at the upper ends of the perforated conveyor section 13 and the circulating conveyor section 17, and the laser detector 9 located in the perforated conveyor section 13 is located in front of the flip detection mechanism 10. The four infrared sensors are respectively directly below the disc grinding mechanism 4, the broaching mechanism 5, the roller grinding mechanism 7, and the square hole grinding mechanism 8. The disc grinding mechanism 4 grinds the corresponding end face of the motor rotor support 12, the broaching mechanism 5 grinds the spline mounting hole 61 of the motor rotor support 12, the roller grinding mechanism 7 performs roller grinding on the corresponding arc surface of the motor rotor support 12, and the square hole grinding mechanism 8 grinds the permanent magnet mounting square hole 65 of the motor rotor support 12.

[0046] The motor rotor bracket 12 is conveyed through the input end of the circulating conveyor line 3 within the main frame 2. When the motor rotor bracket 12 is conveyed to the corresponding infrared sensor position, the corresponding clamping and positioning mechanism 6 rises to clamp and fix it. Subsequently, the disc grinding mechanism 4, broaching mechanism 5, roller grinding mechanism 7, and square hole grinding mechanism 8, arranged sequentially from front to back, perform high-precision grinding on different parts of one side of the motor rotor bracket 12. Specifically, the disc grinding mechanism 4 grinds the corresponding end face of the motor rotor bracket 12, the broaching mechanism 5 grinds the spline mounting hole 61 of the motor rotor bracket 12, the roller grinding mechanism 7 performs roller grinding on the corresponding arc surface of the motor rotor bracket 12, and the square hole grinding mechanism 8 grinds the permanent magnet mounting square hole 65 of the motor rotor bracket 12. During the processing, the vacuum cleaner 11 removes dust through the disc grinding mechanism 4 connected by the air pipe and the dust suction hood facing the inside of the main frame 2. After processing, the motor rotor bracket 12 continues to be conveyed to... The laser detector 9 at the front of the flipping detection mechanism 10 checks whether the motor rotor support 12 is qualified. Then, the flipping detection mechanism 10 at the rear performs a second inspection to check whether it is qualified. If it is qualified, the flipping detection mechanism 10 flips the motor rotor support 12. The circulating conveyor line 3 transports it back to the input end of the circulating conveyor line 3. At this time, the laser detector 9 at the upper end of the circulating conveyor section 17 performs a third inspection on the motor rotor support 12 to ensure the inspection effect. The motor rotor support 12 with one side polished and the new unpolished motor rotor support 12 alternately enter the input end of the circulating conveyor line 3. The different parts on the other side of the motor rotor support 12 are subjected to high-precision grinding again. It is inspected again by the laser detector 9 and the flipping detection mechanism 10. If it is qualified, it is sent out from the qualified output end of the circulating conveyor line 3. If any inspection fails, it is sent out from the unqualified output end of the circulating conveyor line 3 and flipped in conjunction with the laser detector 9.

[0047] The circulating conveyor line 3 includes a perforated conveyor section 13. The conveyor chain of the perforated conveyor section 13 has several evenly spaced clearance holes. The perforated conveyor section 13 penetrates the main frame 2. A circulating conveyor section 17, connected to both ends of the perforated conveyor section 13, is located on the right side of the perforated conveyor section 13. A guiding semi-arc conveyor 18, connected to the right side of the circulating conveyor section 17, is also located on the right side of the circulating conveyor section 17. Inclined discharge conveyors 15 are located at the ends of both the perforated conveyor section 13 and the guiding semi-arc conveyor 18. A sorting side deflector plate 14 is hinged to the opposite side of the connection between the rear side of section 3 and the circulating conveyor section 17. A side deflector electric push rod 16 is provided between the sorting side deflector plate 14 and the perforated conveyor section 13. A sorting side deflector plate 14 is also hinged to the opposite side of the connection between the circulating conveyor section 17 and the guide semi-arc conveyor 18. A side deflector electric push rod 16 is provided between the sorting side deflector plate 14 and the circulating conveyor section 17. Two laser detectors 9 are respectively set at the upper ends of the perforated conveyor section 13 and the circulating conveyor section 17.

[0048] The perforated conveyor section 13 alternately transports a motor rotor bracket 12 with one side polished and a new, unpolished motor rotor bracket 12. The clearance holes on the conveyor chain provide upward space for the clamping and positioning mechanism 6 below. After the motor rotor bracket 12 has completed processing and inspection on one side, the side-push electric push rod 16 at the rear of the perforated conveyor section 13 drives the sorting side push wheel plate 14 to push the motor rotor bracket 12 that needs to be processed on the other side into the circulating conveyor section 17. The motor rotor bracket 12 flows back to the input end of the perforated conveyor section 13 via the circulating conveyor section 17, realizing the circulation of the motor rotor bracket 12. The motor rotor bracket 12 that has been polished on both sides is sent from the output end of the perforated conveyor section 13 to the discharge conveyor 15 at its end and is sent out. The laser detector 9 at the upper end of the circulating conveyor section 17 performs three inspections to ensure the inspection effect.

[0049] If the inspection fails, the side-push electric push rod 16 on the rear side of the perforated conveyor section 13 drives the sorting side deflector plate 14 to push the motor rotor bracket 12 into the circulating conveyor section 17. If the laser detector 9 still fails the inspection, the side-push electric push rod 16 at the circulating conveyor section 17 drives the sorting side deflector plate 14 to push the motor rotor bracket 12 into the guiding semi-arc conveyor 18. The unqualified motor rotor bracket 12 is sent from the output end of the guiding semi-arc conveyor 18 to the discharge conveyor 15 at its end for discharge.

[0050] The disc sanding mechanism 4 includes a U-shaped frame 19, which is fixed to the inner top of the main frame 2. A vertically downward-mounted lifting electric push rod 20 is fixed on the U-shaped frame 19. The telescopic end of the lifting electric push rod 20 passes through the U-shaped frame 19 and a grinding disc motor 21 is fixed on it. A sanding table 22 is fixed on the output shaft of the sanding disc motor 21. Several air jet hoses 23 are provided on the sanding table 22. The ends of the several air jet hoses 23 are connected to the same air intake hose 24. The air intake hose 24 is connected to the air outlet of the vacuum cleaner 11.

[0051] The motor rotor support 12 is fixed to the top of the main frame 2 by the U-shaped frame 19. After the clamping and positioning mechanism 6 fixes the motor rotor support 12, the lifting electric push rod 20 drives the grinding disc motor 21 and the grinding table 22 to descend vertically to the processing position. The grinding disc motor 21 drives the grinding table 22 to rotate back and forth, performing high-precision grinding on the corresponding end face of the motor rotor support 12. During the grinding process, the air outlet of the vacuum cleaner 11 delivers airflow to several air jet hoses 23 through the air inlet hose 24. The air jet hoses 23 spray the airflow onto the grinding area, which plays the role of cleaning grinding debris and assisting in heat dissipation. After the grinding is completed, the lifting electric push rod 20 is reset, driving the grinding table 22 to rise away from the workpiece.

[0052] The broaching mechanism 5 includes a crossbeam fork plate 34, which is fixed to the upper end of the perforated conveyor section 13. A vertical beam 30 is fixed to the upper end of the crossbeam fork plate 34, and an adjustment motor 31 is fixed to the upper end of the vertical beam 30. A lifting screw is fixed to the output shaft of the adjustment motor 31. A sliding seat 32 is slidably provided on the side of the vertical beam 30. The lifting screw is connected to the sliding seat 32 in a transmission manner. A broaching rod 33 is detachably provided at the lower end of the sliding seat 32. A conical head is provided at the lower end of the broaching rod 33. The broaching rod 33 is located directly above the crossbeam fork plate 34.

[0053] The crossbeam fork plate 34 is fixed above the perforated conveyor section 13. After the clamping and positioning mechanism 6 fixes the motor rotor bracket 12, the adjustment motor 31 starts and drives the sliding seat 32 to slide down along the vertical beam 30 through the lifting screw. The sliding seat 32 drives the lower detachable broaching rod 33 to reciprocate and gradually descend, so that the broaching rod 33 passes through the crossbeam fork plate 34 and enters the spline mounting hole 61 of the motor rotor bracket 12. The conical head at the lower end of the broaching rod 33 can be quickly inserted into the spline mounting hole 61 of the motor rotor bracket 12 to achieve precise positioning and forming. After processing, the adjustment motor 31 reverses and drives the sliding seat 32 and the broaching rod 33 to rise and reset through the lifting screw, leaving the workpiece.

[0054] The roller grinding mechanism 7 includes a dual-shaft adjustment assembly 35, which is located at the upper end of the perforated conveyor section 13. The dual-shaft adjustment assembly 35 is provided with a fixing plate 36, and a grinding motor 37 is fixed at the upper end of the fixing plate 36. Two drive shaft sleeves 38 are fixed at the lower end of the fixing plate 36. The rotating shafts of the two drive shaft sleeves 38 are connected to the output shaft of the grinding motor 37. Grinding rollers 39 are detachably provided at the lower ends of the rotating shafts of the two drive shaft sleeves 38.

[0055] The dual-axis adjustment assembly 35 is set at the upper end of the perforated conveyor section 13. After the clamping and positioning mechanism 6 fixes the motor rotor support 12, the dual-axis adjustment assembly 35 drives the fixing plate 36 to move to the processing position. The grinding motor 37 at the upper end of the fixing plate 36 starts and drives the shafts of the two transmission shaft sleeves 38 to rotate through the transmission connection. The grinding rollers 39 at the lower end of the two transmission shaft sleeves 38 rotate at high speed to perform roller grinding on the corresponding arc surface or specific parts of the motor rotor support 12. The grinding rollers 39 are detachable and can be easily replaced according to processing needs. After processing is completed, the dual-axis adjustment assembly 35 drives the fixing plate 36 and the grinding rollers 39 to reset and leave the workpiece.

[0056] The square hole grinding mechanism 8 includes a dual-axis adjustment assembly 35, which is located at the upper end of the perforated conveyor section 13. The dual-axis adjustment assembly 35 is provided with a lifting seat 48, and two hinged linkage plates 46 are hinged to the lifting seat 48. The two hinged linkage plates 46 are connected by a transmission. One of the hinged linkage plates 46 is hinged to the lifting seat 48 with a reciprocating electric push rod 47. The lower ends of the two hinged linkage plates 46 are hinged to a reciprocating seat 45, and a grinding file 44 is detachably provided at the lower end of the reciprocating seat 45.

[0057] The dual-axis adjustment assembly 35 is set at the upper end of the perforated conveyor section 13. After the clamping and positioning mechanism 6 fixes the motor rotor bracket 12, the dual-axis adjustment assembly 35 drives the lifting seat 48 to move to the square hole processing position, driving the square hole grinding mechanism 8 to reciprocate up and down. The grinding file 44 then reciprocates up and down, performing high-precision grinding on the permanent magnet mounting square hole 65 of the motor rotor bracket 12. The reciprocating electric push rod 47 on the lifting seat 48 is activated, pushing the hinged linkage plate 46, which is hinged to it, to swing. The hinged linkage plate 46, which is connected by two transmissions, drives the reciprocating seat 45 to swing back and forth. The detachable grinding file 44 at the lower end of the reciprocating seat 45 then moves back and forth to perform high-precision grinding on the bottom of the permanent magnet mounting square hole 65 of the motor rotor bracket 12. The grinding file 44 is designed to be detachable, making it easy to replace according to processing needs. After processing is completed, the reciprocating electric push rod 47 is reset, and the dual-axis adjustment component 35 drives the square hole grinding mechanism 8, i.e., the grinding file 44, to leave the motor rotor bracket 12.

[0058] The dual-axis adjustment assembly 35 includes a horizontal beam 40, which is fixed to the upper end of the perforated conveyor section 13. A horizontally arranged horizontal electric lead screw 42 is provided on the horizontal beam 40. A vertically arranged vertical electric lead screw 49 is fixed on the moving block of the horizontal electric lead screw 42. A lead screw slide 43 is fixed on the moving block of the vertical electric lead screw 49. A fixing plate 36 is fixed on the lead screw slide 43 of the dual-axis adjustment assembly 35 of the roller grinding mechanism 7. A lifting seat 48 is fixed on the lead screw slide 43 of the dual-axis adjustment assembly 35 of the square hole grinding mechanism 8.

[0059] The horizontal beam 40 is fixed to the upper end of the perforated conveyor section 13 as an installation base; the horizontal electric lead screw 42 drives its moving block to move horizontally, which in turn drives the vertical electric lead screw 49 fixed on it to move horizontally; the vertical electric lead screw 49 then drives its moving block to move vertically up and down, thereby driving the lead screw slide 43 to achieve precise positioning in both horizontal and vertical directions; wherein, the fixing plate 36 of the roller grinding mechanism 7 is fixed on the lead screw slide 43 of the corresponding dual-axis adjustment assembly 35, and the lifting seat 48 of the square hole grinding mechanism 8 is fixed on the lead screw slide 43 of the corresponding dual-axis adjustment assembly 35. Through the dual-axis movement of this assembly, the working position of the two grinding mechanisms is precisely adjusted so that they can accurately reach the processing station.

[0060] The clamping and positioning mechanism 6 includes a fixed frame 29, on which a vertically arranged clamping electric lead screw 28 is provided. A mounting platform 27 is fixed on the moving block of the clamping electric lead screw 28. An electric rotating disk 26 is fixed on the mounting platform 27. An electric gripper 25 is provided at the upper end of the electric rotating disk 26. The electric gripper 25 is located directly below the clearance hole at the corresponding position.

[0061] Mounted on the ground of the circulating conveyor line 3 via a fixed frame 29, when the infrared sensor detects that the motor rotor bracket 12 has been conveyed to the corresponding processing station, the clamping electric lead screw 28 is activated, driving the mounting platform 27 to rise vertically. The mounting platform 27 drives the electric rotary disk 26 and the electric gripper 25 through the clearance hole of the perforated conveyor section 13, so that the electric gripper 25 reaches the workpiece clamping position. The electric gripper 25 clamps the motor rotor bracket 12 and fixes it. The electric rotary disk 26 can adjust the angle and orientation of the motor rotor bracket 12 according to the processing needs, and the infrared sensor detects the accurate position of the motor rotor bracket 12. After processing is completed, the electric gripper 25 releases the workpiece, and the clamping electric lead screw 28 drives the mounting platform 27 to descend and reset, so that the electric gripper 25 returns to below the conveyor line, waiting for the next clamping command.

[0062] The flipping detection mechanism 10 includes a side frame 50, which is fixed to the right side of the main frame 2. A vertically arranged vertical electric screw 52 is provided on the side frame 50. A vertical seat 51 is provided on the moving block of the vertical electric screw 52. A horizontally arranged horizontal plate 53 and a reinforcing plate 55 are provided on the vertical seat 51. The horizontal plate 53 is located at the upper end of the reinforcing plate 55. A vertically arranged detection electric cylinder 54 is fixed on the horizontal plate 53. The telescopic end of the detection electric cylinder 54 passes through the reinforcing plate 55 and a pressure sensor is fixed on it. A detection seat 56 is fixed at the lower end of the pressure sensor. A pneumatic motor 59 is also fixed on the vertical seat 51. A flipping shaft seat 58 is provided on the vertical seat 51. The output shaft of the pneumatic motor 59 is connected to the flipping shaft of the flipping shaft seat 58. A pneumatic gripper 57 is fixed on the flipping shaft of the flipping shaft seat 58. The pneumatic gripper 57 is located directly below the detection seat 56.

[0063] Fixed to the right side of the main frame 2 by the side bracket 50, when the motor rotor bracket 12 is transported to the inspection station, the vertical electric lead screw 52 is activated, driving the vertical seat 51 to move vertically and adjust the inspection and clamping height to a suitable position; the inspection electric cylinder 54 on the vertical seat 51 is activated, and its telescopic end pushes the pressure sensor and inspection seat 56 downward to press and inspect the motor rotor bracket 12 below. The pressure sensor feeds back the inspection data to determine whether the processing quality is qualified; after the inspection is completed, the inspection electric cylinder 54 is reset, the pneumatic motor 59 is activated, and the pneumatic gripper 57 is driven to rotate through the flipping shaft of the flipping shaft seat 58. The pneumatic gripper 57 clamps the motor rotor bracket 12 and rotates with the flipping shaft to realize the flipping operation of the motor rotor bracket 12; after the flipping is completed, the pneumatic gripper 57 releases the workpiece, the vertical electric lead screw 52 drives the vertical seat 51 to reset, and waits for the next inspection command.

[0064] The working principle of this invention is as follows: the motor rotor support 12 is automatically transported and circulated through the circulating conveyor line 3 within the main frame 2. The perforated conveyor section 13 of the circulating conveyor line 3 alternately transports the motor rotor support 12 with one side polished and the new unpolished motor rotor support 12. The clearance holes on its conveyor chain provide upward space for the clamping and positioning mechanism 6 below.

[0065] When the motor rotor support 12 is transported to the corresponding processing station, four infrared sensors are positioned directly below the disc grinding mechanism 4, broaching mechanism 5, roller grinding mechanism 7, and square hole grinding mechanism 8, respectively, to detect the workpiece. Once the workpiece is detected in place, the corresponding clamping and positioning mechanism 6 is activated: the clamping electric lead screw 28 drives the mounting table 27 to rise vertically, causing the electric rotary table 26 and electric grippers 25 to pass through the clearance hole and reach the workpiece clamping position; the electric grippers 25 clamp the motor rotor support 12 to fix it in place, and the electric rotary table 26 can adjust the angle and orientation of the workpiece according to processing requirements.

[0066] Subsequently, four machining mechanisms arranged sequentially from front to back perform high-precision grinding on different parts of one side of the motor rotor support 12:

[0067] Disc-type grinding mechanism 4: The lifting electric push rod 20 drives the grinding disc motor 21 and the grinding table 22 to descend vertically to the processing position. The grinding disc motor 21 drives the grinding table 22 to rotate back and forth, grinding the corresponding end face of the motor rotor support 12. At the same time, the air outlet of the vacuum cleaner 11 delivers airflow to the air jet hose 23 through the air inlet hose 24, which sprays on the grinding area to clean the grinding debris and assist in heat dissipation.

[0068] Broaching mechanism 5: The adjusting motor 31 drives the sliding seat 32 to slide down along the vertical beam 30 through the lifting screw, which drives the detachable broaching rod 33 at the lower end to reciprocate and gradually descend for feeding, so that the broaching rod 33 passes through the crossbeam fork plate 34 and enters the spline mounting hole 61 of the motor rotor bracket 12. The conical head at its lower end is easy to quickly insert to achieve precise positioning and forming.

[0069] Roller grinding mechanism 7: The dual-axis adjustment component 35 drives the fixed plate 36 to move to the processing position, and the grinding motor 37 starts to drive the rotating shafts of the two transmission shaft sleeves 38 to rotate, which drives the detachable grinding roller 39 at the lower end to rotate at high speed, and performs roller grinding on the corresponding arc surface of the motor rotor support 12.

[0070] Square hole grinding mechanism 8: The dual-axis adjustment component 35 drives the lifting seat 48 to move to the square hole processing position. The reciprocating electric push rod 47 starts to push the hinged linkage plate 46 to swing, which drives the reciprocating seat 45 to perform reciprocating swing motion, so that the grinding file 44 grinds the square hole 65 where the permanent magnet is installed; at the same time, the linkage mechanism can also realize the back-and-forth reciprocating motion to grind the bottom of the square hole.

[0071] During the processing, the vacuum cleaner 11 removes dust through the disc polishing mechanism 4 connected by the air pipe and the dust suction hood facing the inside of the main frame 2.

[0072] After processing, the electric gripper 25 releases the workpiece, and the electric lead screw 28 drives the mounting table 27 to descend and reset, allowing the workpiece to continue to be transported to the inspection station. The laser detector 9 on the front side of the flipping inspection mechanism 10 performs the first inspection, and then the flipping inspection mechanism 10 on the rear side performs the second inspection: the vertical electric lead screw 52 drives the vertical seat 51 to adjust the height, and the detection electric cylinder 54 pushes the pressure sensor and the detection seat 56 downward to press the workpiece for inspection. The processing quality is judged by the feedback data from the pressure sensor.

[0073] After passing the inspection, the pneumatic motor 59 drives the pneumatic gripper 57 to clamp the motor rotor bracket 12 through the flipping shaft seat 58 for flipping. Then, the workpiece is transported back to the input end by the circulating conveyor line 3. At this time, another laser detector 9 performs three inspections on the workpiece to ensure the inspection effect. The motor rotor bracket 12 with one side polished and the new unpolished motor rotor bracket 12 alternately enter the input end, and the above processing process is repeated to process the other side.

[0074] During the cyclic conveying process, the side-push electric push rod 16 at the rear of the perforated conveyor section 13 drives the sorting side pusher plate 14 to push the motor rotor bracket 12, which needs to be processed on the other side and has passed inspection, into the cyclic conveyor section 17. The rotor bracket 12 then flows back to the input end of the perforated conveyor section 13 via the cyclic conveyor section 17 to achieve circulation. The motor rotor bracket 12, which has passed inspection after grinding on both sides, is fed from the output end of the perforated conveyor section 13 into the discharge conveyor 15 at its end for discharge.

[0075] If any inspection fails, the side-push electric push rod 16 at the rear of the perforated conveyor section 13 drives the sorting side deflector plate 14 to push the workpiece into the circulating conveyor section 17. After the laser detector 9 confirms that the workpiece is unqualified, the side-push electric push rod 16 at the circulating conveyor section 17 drives the sorting side deflector plate 14 at that location to push the workpiece into the guiding semi-arc conveyor 18. The workpiece is then sent from the output end of the guiding semi-arc conveyor 18 to the discharge conveyor 15 at its end for discharge, thus realizing automatic sorting of unqualified products.

[0076] In summary, by integrating four processes—disc grinding, broaching, roller grinding, and square hole grinding—into one, and cooperating with a circulating conveyor line and an automatic clamping and positioning mechanism, continuous automatic processing of the motor rotor bracket on both sides can be achieved, reducing manual intervention and improving production efficiency and consistency of processing accuracy.

[0077] The machined surface is precisely positioned using an infrared sensor, combined with a laser detector and a pressure detection mechanism, and is inspected multiple times online. Once the inspection is passed, the product is automatically flipped and returned for reprocessing, while defective products are automatically diverted, ensuring that both sides of each product meet high precision requirements and achieving closed-loop quality control.

[0078] The vacuum cleaner blows away dust and debris in the grinding area through the jet hose and assists in heat dissipation, improving the processing environment; the dual-axis adjustment component enables precise positioning of the grinding mechanism in the horizontal and vertical directions, ensuring that each processing part receives high-precision grinding and adapting to the processing needs of complex structures.

[0079] like Figures 10-12 As shown, this rotor assembly includes a motor rotor support 12, which is cylindrical. Both sides of the motor rotor support 12 have several circumferentially distributed square holes 65 for mounting permanent magnets. Each square hole 65 contains a permanent magnet 62, with adjacent permanent magnets 62 having opposite magnetic pole directions. Symmetrically arranged positioning holes 60 are provided on the arc surface of the motor rotor support 12. The interior of the motor rotor support 12 has spline mounting holes 61 and several circumferentially distributed irregularly shaped ventilation holes 64. The spline mounting holes 61 are located in the center of the several circumferentially distributed irregularly shaped ventilation holes 64. Both ends of the motor rotor support 12 are detachably equipped with cover plates 63, which cover the permanent magnets 62 inside the inner square holes 65 for mounting permanent magnets.

[0080] The motor rotor bracket 12 serves as the core load-bearing structure. Several circumferentially distributed square holes 65 on both sides are used to install permanent magnets 62. Adjacent permanent magnets 62 are arranged with opposite magnetic pole directions to form the required magnetic field distribution. The spline mounting holes 61 inside the motor rotor bracket 12 are used to connect with the motor shaft drive to realize torque transmission. Several circumferentially distributed irregularly shaped ventilation holes 64 are located around the spline mounting holes 61 for ventilation and heat dissipation during motor operation. The symmetrical positioning holes 60 on the arc surface of the motor rotor bracket 12 are used for precise positioning during processing and assembly. The removable cover plates 63 at both ends cover and fix the permanent magnets 62 inside the permanent magnet mounting square holes 65 to prevent the permanent magnets from falling off and to protect the internal structure.

[0081] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A high-precision grinding equipment for motor rotor brackets, comprising a main frame (2) and a circulating conveyor line (3) penetrating the main frame (2), characterized in that, The main frame (2) is equipped with a disc grinding mechanism (4), a broaching mechanism (5), a roller grinding mechanism (7), and a square hole grinding mechanism (8) arranged sequentially from front to back inside. The disc grinding mechanism (4), broaching mechanism (5), roller grinding mechanism (7), and square hole grinding mechanism (8) are located above the circulating conveyor line (3). The main frame (2) is also equipped with four clamping and positioning mechanisms (6) arranged sequentially from front to back inside. The four clamping and positioning mechanisms (6) are located below the circulating conveyor line (3) and are respectively located below the disc grinding mechanism (4). 4) Directly below the broaching mechanism (5), roller grinding mechanism (7), and square hole grinding mechanism (8), the main control box (1) and vacuum cleaner (11) are located on the front side of the main frame (2). The air outlet of the vacuum cleaner (11) is connected to the disc grinding mechanism (4) via an air pipe. The air inlet of the vacuum cleaner (11) is equipped with a dust suction hood, which faces the inside of the main frame (2). The right side of the main frame (2) is equipped with a flip detection mechanism (10), which is located behind the square hole grinding mechanism (8) and circulates the conveyor. The line (3) is equipped with two laser detectors (9) and four infrared sensors. The circulating conveyor line (3) includes a perforated conveyor section (13). A circulating conveyor section (17) is connected to both ends of the perforated conveyor section (13) on the right side. The two laser detectors (9) are respectively located at the upper ends of the perforated conveyor section (13) and the circulating conveyor section (17). The laser detector (9) located in the perforated conveyor section (13) is located in front of the flip detection mechanism (10). The four infrared sensors are respectively facing the disc. Below the disc grinding mechanism (4), broaching mechanism (5), roller grinding mechanism (7) and square hole grinding mechanism (8), the disc grinding mechanism (4) grinds the corresponding end face of the motor rotor support (12), the broaching mechanism (5) grinds the spline mounting hole (61) of the motor rotor support (12), the roller grinding mechanism (7) performs roller grinding on the corresponding arc surface of the motor rotor support (12), and the square hole grinding mechanism (8) grinds the permanent magnet mounting square hole (65) of the motor rotor support (12). The conveyor chain of the perforated conveyor section (13) is provided with several equally spaced clearance holes. The perforated conveyor section (13) penetrates the main frame (2). The right side of the circulating conveyor section (17) is provided with a material guiding semi-arc conveyor (18) connected to it. The ends of the perforated conveyor section (13) and the material guiding semi-arc conveyor (18) are both provided with inclined discharge conveyors (15). The rear side of the perforated conveyor section (13) is hinged to the opposite side of the connection between the connection between the perforated conveyor section (13) and the circulating conveyor section (17). The sorting side deflector plate (14) is provided between the sorting side deflector plate (14) and the perforated conveyor section (13). The opposite side of the connection between the circulating conveyor section (17) and the material guiding semi-arc conveyor (18) is provided with a sorting side deflector plate (14). The sorting side deflector plate (14) is provided between the sorting side deflector plate (14) and the circulating conveyor section (17). The disc grinding mechanism (4) includes a U-shaped frame (19), which is fixed to the inner top of the main frame (2). A vertically downward lifting electric push rod (20) is fixed on the U-shaped frame (19). The telescopic end of the lifting electric push rod (20) passes through the U-shaped frame (19) and a grinding disc motor (21) is fixed on it. A grinding table (22) is fixed on the output shaft of the grinding disc motor (21). Several jet hoses (23) are provided on the grinding table (22). The ends of the several jet hoses (23) are connected to the same air inlet hose (24). The air inlet hose (24) is connected to the air outlet of the vacuum cleaner (11). The broaching mechanism (5) includes a crossbeam fork plate (34), which is fixed to the upper end of the perforated conveyor section (13). A vertical beam (30) is fixed to the upper end of the crossbeam fork plate (34), and an adjustment motor (31) is fixed to the upper end of the vertical beam (30). A lifting screw is fixed to the output shaft of the adjustment motor (31). A sliding seat (32) is slidably provided on the side of the vertical beam (30). The lifting screw is connected to the sliding seat (32) in a transmission. A broaching rod (33) is detachably provided at the lower end of the sliding seat (32). A conical head is provided at the lower end of the broaching rod (33). The broaching rod (33) is located directly above the crossbeam fork plate (34). The roller grinding mechanism (7) includes a dual-axis adjustment assembly (35), which is located at the upper end of the perforated conveyor section (13). The dual-axis adjustment assembly (35) is provided with a fixing plate (36), and a grinding motor (37) is fixed at the upper end of the fixing plate (36). Two drive shaft sleeves (38) are fixed at the lower end of the fixing plate (36). The rotating shafts of the two drive shaft sleeves (38) are connected to the output shaft of the grinding motor (37). Grinding rollers (39) are detachably provided at the lower ends of the rotating shafts of the two drive shaft sleeves (38). The square hole grinding mechanism (8) includes a dual-axis adjustment assembly (35), which is located at the upper end of the perforated conveyor section (13). The dual-axis adjustment assembly (35) is provided with a lifting seat (48), and two hinged linkage plates (46) are hinged on the lifting seat (48). The two hinged linkage plates (46) are connected by a transmission. One of the hinged linkage plates (46) is hinged to the lifting seat (48) with a reciprocating electric push rod (47). The lower ends of the two hinged linkage plates (46) are hinged to a reciprocating seat (45), and the lower end of the reciprocating seat (45) is detachably provided with a grinding file (44). The dual-axis adjustment assembly (35) includes a horizontal beam (40), which is fixed at the upper end of the perforated conveyor section (13). A horizontally arranged horizontal electric lead screw (42) is provided on the horizontal beam (40). A vertically arranged vertical electric lead screw (49) is fixed on the moving block of the horizontal electric lead screw (42). A lead screw slide (43) is fixed on the moving block of the vertical electric lead screw (49). A fixing plate (36) is fixed on the lead screw slide (43) of the dual-axis adjustment assembly (35) of the roller grinding mechanism (7). A lifting seat (48) is fixed on the lead screw slide (43) of the dual-axis adjustment assembly (35) of the square hole grinding mechanism (8). The clamping and positioning mechanism (6) includes a fixed frame (29), on which a vertically arranged clamping electric screw (28) is provided. A mounting platform (27) is fixed on the moving block of the clamping electric screw (28), and an electric rotating disk (26) is fixed on the mounting platform (27). An electric gripper (25) is provided at the upper end of the electric rotating disk (26), and the electric gripper (25) is located directly below the clearance hole at the corresponding position. The flipping detection mechanism (10) includes a side frame (50), which is fixed to the right side of the main frame (2). The side frame (50) is provided with a vertically arranged vertical electric screw (52). The moving block of the vertical electric screw (52) is provided with a vertical seat (51). The vertical seat (51) is provided with a horizontally arranged horizontal plate (53) and a reinforcing plate (55). The horizontal plate (53) is located at the upper end of the reinforcing plate (55). A vertically arranged detection electric cylinder (54) is fixed on the horizontal plate (53). The telescopic end of the detection electric cylinder (54) passes through the reinforcing plate (55) and a pressure sensor is fixed on it. The lower end of the pressure sensor is fixed with a detection seat (56). A pneumatic motor (59) is also fixed on the vertical seat (51). The vertical seat (51) is provided with a flipping shaft seat (58). The output shaft of the pneumatic motor (59) is connected to the flipping shaft of the flipping shaft seat (58). A pneumatic gripper (57) is fixed on the flipping shaft of the flipping shaft seat (58). The pneumatic gripper (57) is located directly below the detection seat (56).

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