A polishing device for motor shaft

Abstract

The present invention discloses a polishing device for a motor shaft, which belongs to the technical field of polishing equipment. The polishing device for a motor shaft comprises a working base, wherein a fixed cavity is provided in the working base, a driving assembly is provided in the fixed cavity, a polishing assembly is fixedly installed in the driving assembly, and a speed reduction assembly is provided below the polishing assembly; a support frame is fixedly installed on one side of the upper surface of the working base, a mounting plate is fixedly connected to the upper end of the support frame, a fixed seat is fixedly connected to the lower end of the mounting plate, a water flow control assembly is fixedly installed in the fixed seat, a shaft fixing assembly is provided at the lower end of the fixed seat, and a water supply assembly is installed at the lower end of the shaft fixing assembly. The present invention can reduce the impact force of the motor shaft by means of a matching speed reduction assembly and a top column, and avoids water resource waste during the non-polishing period by designing a water flow control assembly, thereby effectively improving the utilization rate of water resources.

Description

Technical Field

[0001] The invention belongs to the technical field of polishing equipment, and in particular relates to a polishing device for a motor shaft. Background Art

[0002] The motor shaft is one of the key components in a motor. It is usually a cylindrical shaft made of metal. When the motor is running, the shaft transmits the torque generated by the motor rotor to the external load, driving the load to operate. For example, in industrial production, motor-driven conveyor belts, fans, water pumps and other equipment all transmit power to the corresponding load through the motor shaft, enabling them to complete various work tasks. The machining accuracy and surface quality of the motor shaft are crucial to the performance and operational stability of the motor. A high-precision shaft can ensure a uniform air gap between the rotor and stator, reduce vibration and noise, and improve the efficiency and reliability of the motor. The motor shaft polishing device is a device used to polish the surface of the motor shaft to improve its surface finish, accuracy and performance.

[0003] During the polishing process, friction between the polishing tool and the motor surface generates a significant amount of heat. If heat isn't dissipated promptly, the motor surface temperature can overheat, potentially causing changes in material properties, surface burns, and even compromising the motor's precision and performance. Spraying water onto the workpiece during polishing effectively absorbs and dissipates this heat, keeping the motor surface temperature within a reasonable range and protecting the motor's material and performance.

[0004] During processing, existing polishing devices usually install nozzles above or on the sides of the polishing area to evenly sprinkle water on the motor shaft in the form of a spray. However, when the motor shaft is loaded and unloaded, the nozzles will continue to supply water until all the motor shafts are processed. This often results in a waste of water resources and is not conducive to the sustainable use of resources. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of the above-mentioned prior art and provide a polishing device for a motor shaft.

[0006] The technical solution adopted to solve the above technical problems is: a polishing device for a motor shaft, comprising a working base, an installation groove is provided at the upper end of the working base, a material receiving box is provided in the installation groove, a handle is fixedly installed on one side of the material receiving box, a fixed cavity is provided in the working base, a driving assembly is provided in the fixed cavity, a polishing assembly is fixedly installed in the driving assembly, and a deceleration assembly is provided below the polishing assembly; a support frame is fixedly installed on one side of the upper surface of the working base, the upper end of the support frame is fixedly connected to a mounting plate, the lower end of the mounting plate is fixedly connected to a fixing seat, a water flow control assembly is fixedly installed in the fixing seat, a rotating shaft fixing assembly is provided at the lower end of the fixing seat, and a water supply assembly is installed at the lower end of the rotating shaft fixing assembly; the rotating shaft fixing assembly includes a polishing seat fixedly connected to the fixed seat, a polishing groove is provided in the polishing seat, and a rotating shaft is provided in the polishing groove.

[0007] Through the above technical solution, the water flow control component can not only automatically adjust the water outlet state of the nozzle according to the polishing state of the motor shaft, but also provide thrust for the shaft when unloading, so that the shaft can fall into the receiving box through the deceleration component. The entire device has a high degree of automation.

[0008] Furthermore, the driving assembly includes a first driving motor fixedly mounted on a fixed cavity, a driving gear fixedly mounted on the output end of the first driving motor, driven gears symmetrically arranged on both sides of the driving gear, the two driven gears respectively meshing with the driving gear for transmission, the driven gear is rotatably connected to the working base, a threaded rod is fixedly connected to the center position of the driven gear, a wire cylinder is threadedly connected to the threaded rod, the wire cylinder is fixedly connected to the movable seat, a connecting ring is rotatably connected to the movable seat, a gear ring is fixedly mounted on the outside of the connecting ring, a driving gear is meshingly transmitted on one side of the gear ring, the lower end of the driving gear is fixedly mounted on the output end of the second driving motor, and the second driving motor is fixedly connected to the movable seat.

[0009] Through the above technical solution, the first drive motor drives the driving gear to rotate, and the driving gear drives the driven gears on both sides to rotate synchronously through engagement. Due to the threaded transmission between the threaded rod and the screw cylinder, the screw cylinder drives the movable seat to move upward.

[0010] Furthermore, the deceleration assembly includes a connecting frame fixedly installed on the inner wall of the movable seat, the connecting frame is fixedly installed between one end away from the movable seat and the buffer seat, a plurality of connecting grooves are evenly opened on the inner circumference of the buffer seat, and a plurality of mounting protrusions are slidably connected in the plurality of connecting grooves, one end of the mounting protrusion is fixedly connected to a fixing spring, the fixing spring is fixedly installed between one end away from the mounting protrusion and the buffer seat, and one side of the mounting protrusion is arranged in an arc shape.

[0011] Through the above technical solution, after the motor shaft is processed, when it loses its fixation and falls naturally due to gravity, the deceleration component can reduce the impact force of the motor shaft, thereby preventing the precision structures inside the motor shaft, such as the bearing mounting parts and keyways, from being deformed or damaged due to excessive impact.

[0012] Furthermore, the polishing assembly includes a positioning seat fixedly mounted on the inner wall of the connecting ring, a slide rail fixedly mounted on the upper end of the positioning seat, a slide seat slidably connected to the slide rail, one end of the slide seat is fixedly connected to a support block, a polishing head is fixedly connected to the support block, the other end of the polishing head is fixedly connected to the output end of the second hydraulic cylinder, and the second hydraulic cylinder is fixedly mounted between the positioning seat.

[0013] Through the above technical solution, the output end of the second hydraulic cylinder drives the slide to slide along the slide rail, and the polishing head approaches the rotating shaft to polish the rotating shaft.

[0014] Furthermore, the water flow control component includes a fixed sleeve fixedly connected to the fixed seat, a connecting shell fixedly installed at one end of the fixed sleeve, a moving block slidably connected inside the fixed sleeve, a top column fixedly connected at one end of the moving block, a connecting hole is opened in the moving block, water flow holes are opened on both sides of the fixed sleeve, one end of the moving block is fixedly connected to a mounting spring, and the other end of the mounting spring is fixed to the connecting shell.

[0015] Through the above technical solution, the rotating shaft can push the top column to slide into the fixed sleeve when inserted, and the top column drives the moving block to move, so that the connecting hole is aligned with the water outlet pipe and the connecting pipe on both sides, so that a passage is formed between the water outlet pipe and the connecting pipe. When the processing of the rotating shaft is completed, the spring is installed to push the top column to move, so that the position of the connecting hole moves, the passage between the water outlet pipe and the connecting pipe is closed, and water no longer flows.

[0016] Furthermore, the water supply component includes a guide seat fixedly connected to the rotating shaft fixing component, a flow cavity is opened in the guide seat, a plurality of nozzles are evenly fixedly connected to the inner side of the guide seat, the upper end of the mounting plate is fixedly connected to the water tank, a water outlet pipe is fixedly installed on one side of the water tank, the other end of the water outlet pipe is fixedly connected to the water flow control component, a water pump is installed on the water outlet pipe, the water flow control component is fixedly connected to a connecting pipe on the side away from the water outlet pipe, and a guide cavity is opened on one side of the polishing seat.

[0017] Through the above technical solution, the water in the water tank can be pumped into the passage by a water pump, then flow into the flow cavity in the guide seat through the guide cavity, and then sprayed out toward the middle rotating shaft through multiple nozzles.

[0018] Furthermore, the connecting pipe is interconnected with the guide cavity and the flow cavity, and the plurality of nozzles are installed at an angle.

[0019] Through the above technical solution, a passage is formed between the water outlet pipe and the connecting pipe. The water in the water tank is pumped into the passage through a water pump, and then sprayed toward the middle rotating shaft through multiple nozzles. When the motor shaft is processed and unloaded, the passage between the water outlet pipe and the connecting pipe is closed, avoiding the waste of water resources during the non-polishing period and effectively improving the utilization rate of water resources.

[0020] Furthermore, a positioning cavity is provided in the polishing seat, and a first hydraulic cylinder is symmetrically fixedly connected in the positioning cavity. Two output ends of the first hydraulic cylinder are respectively fixedly connected to limiting rings, and the two limiting rings are slidably connected to the polishing seat.

[0021] Through the above technical solution, the first hydraulic cylinder drives the limiting ring to move to the middle position, and the limiting ring can limit the position of the rotating shaft.

[0022] The beneficial effects of the present invention are as follows: (1) The present invention designs a matching deceleration component and a top column, so that after the motor shaft is processed, when it loses its fixation and falls naturally due to gravity, the deceleration component can reduce the impact force of the motor shaft, thereby preventing the precision structures inside the motor shaft, such as the bearing mounting part and the keyway, from being deformed or damaged due to excessive impact; (2) The present invention designs a water flow control component, so that when the motor shaft is installed and processed, a passage is formed between the water outlet pipe and the connecting pipe, and the water in the water tank is pumped into the passage through the water pump, and then sprayed onto the middle shaft through multiple nozzles. When the motor shaft is processed and unloaded, the passage between the water outlet pipe and the connecting pipe is closed, thereby avoiding water waste during the non-polishing period and effectively improving the utilization rate of water resources; (3) The present invention adopts a matching water flow control component, which can not only automatically adjust the water outlet state of the nozzle according to the polishing state of the motor shaft, but also provide thrust for the shaft when the shaft is unloaded, so that the shaft can fall into the receiving box through the deceleration component, and the entire device has a high degree of automation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a first-view stereoscopic structural diagram of the present invention;

[0024] Figure 2 This is a second perspective three-dimensional structural diagram of the present invention;

[0025] Figure 3 is a cross-sectional view of the present invention;

[0026] Figure 4 is a cross-sectional view of the water flow control assembly and the rotating shaft fixing assembly of the present invention;

[0027] Figure 5 is a diagram of the internal structure of the water flow control assembly of the present invention;

[0028] Figure 6 This invention Figure 3 A magnified view of the structure at point A;

[0029] Figure 7 It is a three-dimensional structural diagram of the drive assembly of the present invention;

[0030] Figure 8 It is a three-dimensional structural diagram of the polishing assembly of the present invention;

[0031] Figure 9 is a cross-sectional view of the movable seat of the present invention;

[0032] Figure 10 This invention Figure 9 A magnified view of the structure at point B.

[0033] Figure numerals: 1. working base; 11. mounting groove; 12. receiving box; 13. handle; 14. fixed cavity; 15. support frame; 16. mounting plate; 17. rotating shaft; 18. fixed seat; 2. driving assembly; 20. first driving motor; 21. driving gear; 22. driven gear; 23. threaded rod; 24. screw cylinder; 25. moving seat; 26. connecting ring; 27. gear ring; 28. driving gear; 29. ​​second driving motor; 3. reduction assembly; 30. connecting frame; 31. buffer seat; 32. connecting groove; 33. mounting protrusion; 34. fixing spring; 4. water supply assembly ;40. Water tank;41. Water outlet pipe;42. Water pump;43. Connecting pipe;44. Diversion chamber;45. Diversion seat;46. Circulation chamber;47. Nozzle;5. Water flow control assembly;50. Fixing sleeve;51. Connecting shell;52. Moving block;53. Top column;54. Mounting spring;55. Connecting hole;6. Rotating shaft fixing assembly;60. Polishing seat;61. Polishing groove;62. Positioning chamber;63. First hydraulic cylinder;64. Limiting ring;7. Polishing assembly;70. Positioning seat;71. Slide rail;72. Slide seat;73. Support block;74. Second hydraulic cylinder;75. ​​Polishing head. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0035] like Figure 1-Figure 3As shown, a polishing device for a motor shaft in this embodiment includes a working base 1, a mounting groove 11 is provided on the upper end of the working base 1, a material receiving box 12 is provided in the mounting groove 11, a handle 13 is fixedly installed on one side of the material receiving box 12, a fixed cavity 14 is provided in the working base 1, a driving component 2 is provided in the fixed cavity 14, a polishing component 7 is fixedly installed in the driving component 2, and a speed reduction component 3 is provided below the polishing component 7; a support frame 15 is fixedly installed on one side of the upper surface of the working base 1, the upper end of the support frame 15 is fixedly connected to a mounting plate 16, the lower end of the mounting plate 16 is fixedly connected to a fixing seat 18, and the fixing seat 1 8 is fixedly installed with a water flow control component 5, a rotating shaft fixing component 6 is provided at the lower end of the fixing seat 18, and a water supply component 4 is installed at the lower end of the rotating shaft fixing component 6; the rotating shaft fixing component 6 includes a polishing seat 60 fixedly connected to the fixing seat 18, a polishing groove 61 is provided in the polishing seat 60, and a rotating shaft 17 is provided in the polishing groove 61. The water flow control component 5 can not only automatically adjust the water outlet state of the nozzle 47 according to the polishing state of the motor shaft, but also provide thrust for the rotating shaft 17 when the rotating shaft 17 is unloading, so that the rotating shaft 17 can fall into the receiving box 12 through the deceleration component 3. The whole device has a high degree of automation.

[0036] like Figures 1-8 As shown, the drive assembly 2 includes a first drive motor 20 fixedly mounted on the fixed cavity 14, a drive gear 21 is fixedly mounted on the output end of the first drive motor 20, and driven gears 22 are symmetrically arranged on both sides of the drive gear 21, and the two driven gears 22 are respectively meshed with the drive gear 21 for transmission, and the driven gear 22 is rotatably connected to the working base 1, and a threaded rod 23 is fixedly connected to the center position of the driven gear 22, and a wire cylinder 24 is threadedly connected to the threaded rod 23, and the wire cylinder 24 is fixedly connected to the movable seat 25, and a connecting ring 26 is rotatably connected to the movable seat 25, and a gear ring 27 is fixedly mounted on the outer side of the connecting ring 26, and a driving gear 28 is meshed with the gear ring 27 on one side. The lower end of the driving gear 28 is fixedly mounted on the output end of the second drive motor 29, and the second drive motor 29 is fixed between the movable seat 25 The first drive motor 20 drives the driving gear 21 to rotate, and the driving gear 21 drives the driven gears 22 on both sides to rotate synchronously through meshing. Due to the threaded transmission between the threaded rod 23 and the wire cylinder 24, the wire cylinder 24 drives the moving seat 25 to move upward; the polishing assembly 7 includes a positioning seat 70 fixedly installed on the inner wall of the connecting ring 26, and a slide rail 71 is fixedly installed on the upper end of the positioning seat 70. A slide 72 is slidably connected to the slide rail 71, and one end of the slide 72 is fixedly connected to a support block 73, and a polishing head 75 is fixedly connected to the support block 73. The other end of the polishing head 75 is fixedly connected to the output end of the second hydraulic cylinder 74. The second hydraulic cylinder 74 is fixedly installed between the positioning seat 70, and the output end of the second hydraulic cylinder 74 drives the slide 72 to slide along the slide rail 71, and the polishing head 75 approaches the rotating shaft 17 and then polishes the rotating shaft 17.

[0037] like Figures 1-10 As shown, the deceleration assembly 3 includes a connecting frame 30 fixedly installed on the inner wall of the moving seat 25, the connecting frame 30 is fixedly installed between the end away from the moving seat 25 and the buffer seat 31, and a plurality of connecting grooves 32 are evenly opened on the inner circumference of the buffer seat 31, and a plurality of connecting grooves 32 are slidably connected with mounting protrusions 33, and one end of the mounting protrusion 33 is fixedly connected with a fixing spring 34, and the fixing spring 34 is fixedly installed between the end away from the mounting protrusion 33 and the buffer seat 31, and one side of the mounting protrusion 33 is arranged in an arc shape. After the motor shaft is processed, when it loses its fixation and falls naturally due to gravity, the deceleration assembly 3 can reduce the impact force of the motor shaft, thereby preventing the precision structures inside the motor shaft, such as the bearing mounting parts, keyways, etc., from being deformed or damaged due to excessive impact.

[0038] like Figures 1-6 As shown, the water flow control component 5 includes a fixed sleeve 50 fixedly connected to the fixed seat 18, one end of the fixed sleeve 50 is fixedly installed with a connecting shell 51, a moving block 52 is slidably connected in the fixed sleeve 50, one end of the moving block 52 is fixedly connected to a top column 53, a connecting hole 55 is provided in the moving block 52, and water flow holes are provided on both sides of the fixed sleeve 50, one end of the moving block 52 is fixedly connected to a mounting spring 54, and the other end of the mounting spring 54 is fixed to the connecting shell 51, and the rotating shaft 17 can push the top column 53 to slide into the fixed sleeve 50 when inserted, and the top column 53 drives the moving block 52 to move, so that the connecting hole 55 is aligned with the water outlet pipe 41 and the connecting pipe 43 on both sides, so that a passage is formed between the water outlet pipe 41 and the connecting pipe 43, and when the rotating shaft 17 is processed, the mounting spring 54 pushes the top column 53 to move, so that the position of the connecting hole 55 moves, and water discharge The passage between the tube 41 and the connecting pipe 43 is closed, and the water flow no longer circulates; the water supply component 4 includes a guide seat 45 fixedly connected to the rotating shaft fixing component 6, and a circulation cavity 46 is opened in the guide seat 45. A plurality of nozzles 47 are evenly fixedly connected to the inner side of the guide seat 45. The upper end of the mounting plate 16 is fixedly connected to the water tank 40, and a water outlet pipe 41 is fixedly installed on one side of the water tank 40. The other end of the water outlet pipe 41 is fixedly connected to the water flow control component 5. A water pump 42 is installed on the water outlet pipe 41, and the water flow control component 5 is fixedly connected to the connecting pipe 43 on the side away from the water outlet pipe 41. A guide cavity 44 is opened on one side of the polishing seat 60. The water in the water tank 40 can be pumped into the passage by the water pump 42, and then flows into the circulation cavity 46 in the guide seat 45 through the guide cavity 44, and then sprayed toward the middle rotating shaft 17 through multiple nozzles 47.

[0039] like Figures 1-6As shown, the connecting pipe 43 is interconnected with the guide cavity 44 and the circulation cavity 46, and multiple nozzles 47 are installed at an angle. A passage is formed between the water outlet pipe 41 and the connecting pipe 43. The water in the water tank 40 is pumped into the passage through the water pump 42, and then sprayed toward the middle rotating shaft 17 through multiple nozzles 47. When the motor shaft is processed and unloaded, the passage between the water outlet pipe 41 and the connecting pipe 43 is closed, avoiding the waste of water resources during the non-polishing period and effectively improving the utilization rate of water resources.

[0040] like Figures 1-4 As shown, a positioning cavity 62 is opened in the polishing seat 60, and a first hydraulic cylinder 63 is symmetrically fixedly connected in the positioning cavity 62. The output ends of the two first hydraulic cylinders 63 are respectively fixedly connected to the limiting rings 64. The two limiting rings 64 are slidingly connected to the polishing seat 60. The first hydraulic cylinder 63 drives the limiting ring 64 to move to the middle position, and the limiting ring 64 can limit the position of the rotating shaft 17.

[0041] The working principle of this embodiment is as follows: the rotating shaft 17 is aligned with the polishing groove 61 and inserted, and the first hydraulic cylinder 63 is started at the same time. The first hydraulic cylinder 63 drives the limiting ring 64 to move to the middle position, limiting the position of the rotating shaft 17. At this time, the rotating shaft 17 pushes the top column 53 to slide into the fixed sleeve 50 during insertion. The top column 53 drives the moving block 52 to move, so that the connecting hole 55 is aligned with the water outlet pipe 41 and the connecting pipe 43 on both sides, so that a passage is formed between the water outlet pipe 41 and the connecting pipe 43. The water in the water tank 40 is pumped into the passage by the water pump 42, and then flows into the flow chamber 46 in the guide seat 45 through the guide chamber 44, and then sprayed toward the central rotating shaft 17 through multiple nozzles 47;

[0042] The power supply of the first drive motor 20 is started, and the first drive motor 20 drives the drive gear 21 to rotate. The drive gear 21 drives the driven gears 22 on both sides to rotate synchronously through meshing. Due to the threaded transmission between the threaded rod 23 and the screw cylinder 24, the screw cylinder 24 drives the movable seat 25 to move upward. When the movable seat 25 moves to the bottom end of the rotating shaft 17, the output end of the second hydraulic cylinder 74 drives the polishing head 75 to approach the rotating shaft 17. At the same time, the output end of the second drive motor 29 drives the driving gear 28 to rotate, so that the polishing head 75 on the connecting ring 26 rotates accordingly to polish the rotating shaft 17.

[0043] When the processing of the rotating shaft 17 is completed, the limiting ring 64 is recovered, and the rotating shaft 17 naturally falls to the middle of the deceleration assembly 3 due to gravity. The installing spring 54 pushes the top column 53 to move, so that the position of the connecting hole 55 moves, and the passage between the outlet pipe 41 and the connecting pipe 43 is closed, and the water flow no longer circulates, thereby causing the nozzle 47 to stop spraying water; at the same time, the top column 53 is pushed outward to push one end of the rotating shaft 17, and the installing protrusion 33 is compressed by pressure to slide the fixing spring 34 into the connecting groove 32, so that the rotating shaft 17 can pass through the deceleration assembly 3 and fall into the receiving box 12.

[0044] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention.

Claims

1. A polishing device for a motor shaft, comprising a working base (1), characterized in that: The upper end of the working base (1) is provided with a mounting groove (11), a material receiving box (12) is provided in the mounting groove (11), a handle (13) is fixedly installed on one side of the material receiving box (12), a fixed cavity (14) is provided in the working base (1), a driving assembly (2) is provided in the fixed cavity (14), a polishing assembly (7) is fixedly installed in the driving assembly (2), and a speed reduction assembly (3) is provided below the polishing assembly (7); A support frame (15) is fixedly mounted on one side of the upper surface of the working base (1), a mounting plate (16) is fixedly connected to the upper end of the support frame (15), a fixing seat (18) is fixedly connected to the lower end of the fixing plate (16), a water flow control component (5) is fixedly mounted in the fixing seat (18), a rotating shaft fixing component (6) is provided at the lower end of the fixing seat (18), and a water supply component (4) is installed at the lower end of the rotating shaft fixing component (6); The rotating shaft fixing assembly (6) includes a polishing seat (60) fixedly connected to the fixing seat (18), a polishing groove (61) is provided in the polishing seat (60), and a rotating shaft (17) is provided in the polishing groove (61); The water flow control assembly (5) comprises a fixed sleeve (50) fixedly connected to the fixed seat (18), a connecting shell (51) fixedly mounted on one end of the fixed sleeve (50), a moving block (52) slidably connected in the fixed sleeve (50), a top column (53) fixedly connected to one end of the moving block (52), a connecting hole (55) provided in the moving block (52), water flow holes provided on both sides of the fixed sleeve (50), a mounting spring (54) fixedly connected to one end of the moving block (52), and the other end of the mounting spring (54) fixed to the connecting shell (51); The water supply assembly (4) includes a flow guide seat (45) fixedly connected to the rotating shaft fixing assembly (6), a flow chamber (46) is provided in the flow guide seat (45), a plurality of nozzles (47) are evenly fixedly connected to the inner side of the flow guide seat (45), the upper end of the mounting plate (16) is fixedly connected to a water tank (40), a water outlet pipe (41) is fixedly installed on one side of the water tank (40), the other end of the water outlet pipe (41) is fixedly connected to the water flow control assembly (5), a water pump (42) is installed on the water outlet pipe (41), a connecting pipe (43) is fixedly connected to the side of the water flow control assembly (5) away from the water outlet pipe (41), and a flow guide chamber (44) is provided on one side of the polishing seat (60); The connecting pipe (43) is interconnected with the guide cavity (44) and the circulation cavity (46), and the plurality of nozzles (47) are installed at an angle.

2. The polishing device for a motor shaft according to claim 1, characterized in that: The driving assembly (2) includes a first driving motor (20) fixedly mounted on the fixed cavity (14), a driving gear (21) fixedly mounted on the output end of the first driving motor (20), driven gears (22) symmetrically arranged on both sides of the driving gear (21), the two driven gears (22) respectively meshing with the driving gear (21) for transmission, the driven gears (22) are rotatably connected to the working base (1), a threaded rod (23) is fixedly connected to the center of the driven gear (22), and the driven gears (22) are symmetrically arranged on both sides of the driving gear (21). A threaded cylinder (24) is threadedly connected to the threaded rod (23), and the threaded cylinder (24) is fixedly connected to the movable seat (25). A connecting ring (26) is rotatably connected to the movable seat (25), and a gear ring (27) is fixedly installed on the outer side of the connecting ring (26). A driving gear (28) is provided on one side of the gear ring (27) for meshing transmission. The lower end of the driving gear (28) is fixedly installed with the output end of the second drive motor (29), and the second drive motor (29) is fixedly connected to the movable seat (25).

3. The polishing device for a motor shaft according to claim 2, characterized in that: The deceleration assembly (3) includes a connecting frame (30) fixedly mounted on the inner wall of the movable seat (25), the connecting frame (30) is fixedly mounted between one end away from the movable seat (25) and the buffer seat (31), a plurality of connecting grooves (32) are evenly opened on the inner circumference of the buffer seat (31), a plurality of mounting protrusions (33) are slidably connected in the plurality of connecting grooves (32), one end of the mounting protrusion (33) is fixedly connected to a fixing spring (34), the fixing spring (34) is fixedly mounted between one end away from the mounting protrusion (33) and the buffer seat (31), and one side of the mounting protrusion (33) is arranged in an arc shape.

4. The polishing device for a motor shaft according to claim 2, characterized in that: The polishing assembly (7) includes a positioning seat (70) fixedly mounted on the inner wall of the connecting ring (26), a slide rail (71) fixedly mounted on the upper end of the positioning seat (70), a slide seat (72) slidably connected to the slide rail (71), one end of the slide seat (72) fixedly connected to a support block (73), a polishing head (75) fixedly connected to the support block (73), the other end of the polishing head (75) fixedly connected to the output end of a second hydraulic cylinder (74), and the second hydraulic cylinder (74) is fixedly mounted between the positioning seat (70).

5. The polishing device for a motor shaft according to claim 1, characterized in that: A positioning cavity (62) is provided in the polishing seat (60), and a first hydraulic cylinder (63) is symmetrically fixedly connected in the positioning cavity (62). The output ends of the two first hydraulic cylinders (63) are respectively fixedly connected to a limiting ring (64), and the two limiting rings (64) are slidably connected to the polishing seat (60).

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