A pretreatment device for the production of motor shafts

Abstract

The present invention provides a pretreatment device for the production of motor shafts, belonging to the technical field of motor shaft production, and is used to solve the problem of low pretreatment efficiency in the existing production of motor shafts. It includes a bottom plate and a cutting component. The cutting component includes a mounting plate, a first spring telescopic rod, a liquid storage tank, and two second spring telescopic rods. The mounting plate is fixed above the bottom plate. A moving groove is formed on the mounting plate. A moving block is detachably arranged inside the moving groove. A rotating plate is rotatably arranged on the moving block. An adjustable telescopic plate is fixed on the rotating plate. An inclined block is fixed at the end of the adjustable telescopic plate. The first spring telescopic rod is rotatably arranged above the bottom plate. An L-shaped block is fixed at the end of the first spring telescopic rod. The inclined block abuts against the L-shaped block. A saw is fixed above the two second spring telescopic rods. A switching component and a straightening component are arranged above the bottom plate. The straightening component is located on the side of the mounting plate; the present invention improves the pretreatment efficiency in the production of motor shafts.

Description

Technical Field

[0001] The invention belongs to the technical field of motor shaft production and relates to a pretreatment device for motor shaft production. Background Art

[0002] The motor shaft is an important component of the motor. The size and weight of the motor shaft vary depending on the motor model. When producing the motor shaft, two stages of preparatory processing and forming processing are generally required. The preparatory processing includes round steel straightening, blank cutting, flat end face and center hole drilling. The purpose of preparatory processing is to provide a blank that meets the processing requirements and process the process positioning benchmark for subsequent forming processing.

[0003] The existing pre-processing is generally most important for round steel straightening and blank cutting. The existing round steel straightening and blank cutting are carried out before the blank enters the mechanical processing process. In the production of motor shafts, it is often necessary to move the motor shaft in each process. The current main transportation method is to place the motor shaft directly on a cart, which often causes falling, collision and wear, causing a certain impact on the product quality of the motor shaft. At the same time, manual participation is required during transportation, which increases the labor intensity and reduces the production efficiency of the motor shaft. Therefore, we propose an efficient pretreatment device for motor shaft production. Summary of the invention

[0004] The purpose of the present invention is to address the above-mentioned problems in the prior art and to propose a pretreatment device for motor shaft production. The technical problem to be solved by the device is: how to improve the efficiency of pretreatment for motor shaft production.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] A pretreatment device for motor shaft production comprises a base plate and a cutting assembly, wherein the cutting assembly comprises a mounting plate, a first spring sleeve rod, a liquid storage tank and two second spring sleeve rods, the mounting plate is fixed above the base plate, a movable groove is provided on the mounting plate, a movable block is detachably provided inside the movable groove, the movable block is L-shaped, a rotating plate is rotatably provided on the movable block, an adjustable telescopic plate is fixed on the rotating plate, an inclined block is fixed on the end of the adjustable telescopic plate, the first spring sleeve rod is rotatably provided above the base plate, an L-shaped block is fixed on the end of the first spring sleeve rod, the inclined block abuts against the L-shaped block, an electric saw is fixed above the two second spring sleeve rods, a spray pipe is provided above the electric saw, the liquid storage tank is filled with coolant, a submersible pump is provided inside the liquid storage tank, an elastic hose is provided at the water outlet of the submersible pump, the elastic hose is connected to the spray pipe, a switching assembly and a straightening assembly are provided above the base plate, and the straightening assembly is located on the side of the mounting plate.

[0007] The working principle of the present invention is: the switching component transports the raw material to the straightening component, the straightening component straightens the raw material, and after the straightening is completed, the switching component transports the raw material to the cutting component, the raw material hits the rotating plate, drives the rotating plate to rotate, the rotating plate drives the adjustable telescopic plate to move, the adjustable telescopic plate drives the inclined block to move, the inclined block drives the L-shaped block to move, the L-shaped block rotates to the top of the electric saw, the switching component drives the electric saw to descend, and the electric saw cuts the raw material.

[0008] Two telescopic rods are arranged above the electric saw, a lower pressing plate is fixed above the two telescopic rods, and a locking piece is arranged on the adjustable telescopic plate.

[0009] With the above structure, the lower pressure plate drives the electric saw to descend, and the adjustable telescopic plate cooperates with the locking member to adjust the length of the adjustable telescopic plate.

[0010] The switching assembly includes a first U-shaped plate, two second vertical plates are fixed below the first U-shaped plate, and the two second vertical plates are fixed above the bottom plate. An electric push rod and two third spring sleeve rods are respectively fixed on the inner wall of the first U-shaped plate, and the electric push rod and the two third spring sleeve rods are in opposite directions. A slot plate is provided at the ends of the electric push rod and the two third spring sleeve rods, and a first threaded rod is provided for rotation inside the slot plate, and a sliding block is provided for sliding inside the slot plate, and a first wheel frame is provided above the sliding block. A second wheel frame is fixed inside the slot plate, and a moving plate is threadedly connected to the first threaded rod, and a rotating motor is fixed on the side of the moving plate, and the output shaft of the rotating motor extends through the moving plate. An electric three-jaw chuck is fixed on the output shaft of the rotating motor, and a rod is fixed on the electric three-jaw chuck, and the rod is located on the first wheel frame and the second wheel frame. A threaded motor is fixed at the end of the slot plate, and the output shaft of the threaded motor is connected to the first threaded rod through a coupling.

[0011] With the above structure, the electric push rod drives the slot plate to move, the slot plate squeezes the two third spring sleeve rods to shrink, thereby moving the slot plate to the electric saw, the threaded motor drives the first threaded rod to rotate through the output shaft, and the first threaded rod drives some components to move.

[0012] A second U-shaped plate is fixed above the first U-shaped plate, a fixed plate is fixed above the second U-shaped plate, a cam motor is fixed on the side of the fixed plate, an output shaft of the cam motor extends through the fixed plate, a cam is fixed on the output shaft of the cam motor, and the cam is located above the lower pressure plate.

[0013] With the above structure, the cam motor drives the cam to rotate through the output shaft, and the cam drives the lower pressure plate to descend.

[0014] The straightening assembly includes a support plate. Two first vertical plates are fixed below the support plate, and the two first vertical plates are fixed above the bottom plate. Sliding grooves are formed on both sides of the support plate. A sliding rod and a second threaded rod are separately arranged inside the two sliding grooves. A third U-shaped plate is slidably arranged on the two sliding grooves. One end of the third U-shaped plate is slidably arranged on the sliding rod, and the other end of the third U-shaped plate is threadedly connected to the second threaded rod. A moving motor is fixed at the end of the support plate, and the output shaft of the moving motor is connected to the second threaded rod through a coupling. A hydraulic cylinder is fixed below the third U-shaped plate, and an extrusion block is fixed at the telescopic end of the hydraulic cylinder.

[0015] With the above structure, the moving motor drives the second threaded rod to rotate through the output shaft, the second threaded rod drives the third U-shaped plate to move, the third U-shaped plate drives the hydraulic cylinder to move, the hydraulic cylinder drives the extrusion block to move. When the extrusion block moves to a suitable position, the telescopic end of the hydraulic cylinder drives the extrusion block to move downward, and the extrusion block descends to extrude the bar stock, thereby straightening the bar stock.

[0016] The straightening assembly further includes two support frames and a plurality of U-shaped blocks. The two support frames and the plurality of U-shaped blocks are all fixed on the support plate, and the plurality of U-shaped blocks are located between the two support frames. Pressure sensors are arranged on the plurality of U-shaped blocks.

[0017] With the above structure, the two support frames can support both ends of the bar stock, and the plurality of U-shaped blocks provide installation positions for the pressure sensors.

[0018] A blanking box is fixed above the bottom plate. A falling plate is fixed inside the blanking box. A collection box is slidably arranged inside the blanking box, and the collection box is located below the falling plate.

[0019] With the above structure, the cut bar stock falls onto the falling plate, and the falling plate guides the bar stock into the collection box.

[0020] Compared with the prior art, the preprocessing device for motor shaft production has the following advantages:

[0021] 1. Through the cooperation of the bottom plate and the switching assembly, the threaded motor drives the first threaded rod to rotate in the reverse direction through the output shaft, the first threaded rod drives the moving plate to move in the reverse direction, the moving plate drives the rotating motor and the electric three-jaw chuck to move in the reverse direction, and the electric three-jaw chuck drives the bar stock to move in the reverse direction. The bar stock moves to the first wheel rack and the second wheel rack, and the bar stock can be automatically switched, reducing the labor intensity of workers and improving the production efficiency of the motor shaft;

[0022] 2. The cutting component and the switching component cooperate. The electric push rod drives the groove plate to move. The groove plate squeezes the two third spring sleeve rods to contract, so as to move the groove plate to the electric saw. The threaded motor drives the first threaded rod to rotate through the output shaft. The first threaded rod drives the moving plate to move. The moving plate drives the rotating motor and the electric three-jaw chuck to move. The electric three-jaw chuck drives the rod material to move. The rod material abuts against the rotating plate, driving the rotating plate to rotate. The rotating plate drives the adjustable telescopic plate to move. The adjustable telescopic plate drives the inclined block to move. The inclined block drives the L-shaped block to move. The L-shaped block rotates between the electric saw and the lower pressing plate. The cam motor drives the cam to rotate through the output shaft. The cam drives the lower pressing plate to descend. The lower pressing plate drives the L-shaped block to descend. The L-shaped block drives the electric saw to move. The electric saw cuts the rod material, and can automatically cut according to the length of the rod material, improving the cutting efficiency and also improving the production efficiency of the motor shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is the front three-dimensional structural schematic diagram of the present invention;

[0024] Figure 2 is the rear three-dimensional structural schematic diagram of the present invention;

[0025] Figure 3 is the front view structural schematic diagram of the present invention;

[0026] Figure 4 is the sectional structural schematic diagram of the present invention;

[0027] Figure 5 is the top view structural schematic diagram of the present invention;

[0028] In the figure: 1. mounting plate; 2. moving groove; 3. support frame; 4. moving motor; 5. collection box; 6. blanking box; 7. first spring sleeve rod; 8. second spring sleeve rod; 9. liquid storage tank; 10. electric saw; 11. fixing plate; 12. bottom plate; 13. third spring sleeve rod; 14. first U-shaped plate; 15. threaded motor; 16. rotating motor; 17. electric push rod; 18. second U-shaped plate; 19. L-shaped block; 20. third U-shaped plate; 21. hydraulic cylinder; 22. electric three-jaw chuck; 23. moving plate; 24. first wheel frame; 25. sliding rod; 26. sliding groove; 27. support plate; 28. first vertical plate; 29. U-shaped block; 30. pressure sensor; 31. extrusion block; 32. rotating plate; 33. cam; 34. cam motor; 35. rod material 35; 36. second wheel frame; 37. second vertical plate; 38. moving block; 39. falling plate; 40. sliding block; 41. adjustable telescopic plate; 42. flexible hose; 43. groove plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] The technical solutions of this patent will be further described in detail below in conjunction with the specific embodiments.

[0030] Embodiments of the present patent will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present patent and should not be construed as a limitation to the present patent.

[0031] In the description of the present patent, it should be understood that the orientation or positional relationships indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present patent and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present patent.

[0032] In the description of the present patent, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "coupling", "setting" should be understood in a broad sense. For example, it can be fixedly connected and set, or detachably connected and set, or integrally connected and set. For those of ordinary skill in the art, the specific meanings of the above terms in the present patent can be understood according to specific circumstances.

[0033] Please refer to Figures 1-5 , this embodiment provides a pretreatment device for the production of motor shafts, including a bottom plate 12 and a cutting assembly. The cutting assembly includes a mounting plate 1, a first spring telescopic rod 7, a liquid storage tank 9 and two second spring telescopic rods 8. The mounting plate 1 is fixed above the bottom plate 12. A moving groove 2 is formed on the mounting plate 1. A moving block 38 is detachably arranged inside the moving groove 2. The moving block 38 is L-shaped. A rotating plate 32 is rotatably arranged on the moving block 38. An adjustable telescopic plate 41 is fixed on the rotating plate 32. An inclined block is fixed at the end of the adjustable telescopic plate 41. The first spring telescopic rod 7 is rotatably arranged above the bottom plate 12. An L-shaped block 19 is fixed at the end of the first spring telescopic rod 7. The inclined block abuts against the L-shaped block 19. A saw 10 is fixed above the two second spring telescopic rods 8. A spray pipe is arranged above the saw 10. The liquid storage tank 9 is filled with coolant. A submersible pump is arranged inside the liquid storage tank 9. An elastic hose 42 is arranged at the water outlet of the submersible pump. The elastic hose 42 is connected to the spray pipe. A switching assembly and a straightening assembly are arranged above the bottom plate 12. The straightening assembly is located on the side of the mounting plate 1.

[0034] The switching component conveys the raw material to the straightening component. The straightening component straightens the raw material. After the straightening is completed, the switching component conveys the raw material to the cutting component. The raw material touches the rotating plate 32, driving the rotating plate 32 to rotate. The rotating plate 32 drives the adjustable telescopic plate 41 to move. The adjustable telescopic plate 41 drives the inclined block to move. The inclined block drives the L-shaped block 19 to move. The L-shaped block 19 rotates above the electric saw 10. The switching component drives the electric saw 10 to descend, and the electric saw 10 cuts the raw material.

[0035] There are two telescopic rods arranged above the electric saw 10. A lower pressing plate is fixed above the two telescopic rods. A locking member is arranged on the adjustable telescopic plate 41. The lower pressing plate drives the electric saw 10 to descend. The adjustable telescopic plate 41 and the locking member cooperate to adjust the length of the adjustable telescopic plate 41.

[0036] The switching component includes a first U-shaped plate 14. Two second vertical plates 37 are fixed below the first U-shaped plate 14. Both of the two second vertical plates 37 are fixed above the bottom plate 12. An electric push rod 17 and two third spring sleeve rods 13 are respectively fixed on the inner wall of the first U-shaped plate 14. The electric push rod 17 and the two third spring sleeve rods 13 are in opposite directions. A groove plate 43 is arranged at the end of the electric push rod 17 and the two third spring sleeve rods 13. A first threaded rod is rotatably arranged inside the groove plate 43. A sliding block 40 is slidably arranged inside the groove plate 43. A first wheel frame 24 is arranged above the sliding block 40. A second wheel frame 36 is fixed inside the groove plate 43. A moving plate 23 is threadedly connected to the first threaded rod. A rotating motor 16 is fixed on the side of the moving plate 23. The output shaft of the rotating motor 16 penetrates and extends out of the moving plate 23. An electric three-jaw chuck 22 is fixed on the output shaft of the rotating motor 16. A bar stock 35 is fixed on the electric three-jaw chuck 22. The bar stock 35 is located on the first wheel frame 24 and the second wheel frame 36. A threaded motor 15 is fixed at the end of the groove plate 43. The output shaft of the threaded motor 15 is connected to the first threaded rod through a coupling. The electric push rod 17 drives the groove plate 43 to move. The groove plate 43 squeezes the two third spring sleeve rods 13 to contract, thereby moving the groove plate 43 to the position of the electric saw 10. The threaded motor 15 drives the first threaded rod to rotate through the output shaft, and the first threaded rod drives some components to move.

[0037] A second U-shaped plate 18 is fixed above the first U-shaped plate 14. A fixing plate 11 is fixed above the second U-shaped plate 18. A cam motor 34 is fixed on the side of the fixing plate 11. The output shaft of the cam motor 34 penetrates and extends out of the fixing plate 11. A cam 33 is fixed on the output shaft of the cam motor 34. The cam 33 is located above the lower pressing plate. The cam motor 34 drives the cam 33 to rotate through the output shaft, and the cam 33 drives the lower pressing plate to descend.

[0038] The straightening assembly includes a support plate 27. Below the support plate 27, two first vertical plates 28 are fixed. The two first vertical plates 28 are fixed above the bottom plate 12. On both sides of the support plate 27, sliding grooves 26 are provided. Inside the two sliding grooves 26, a sliding rod 25 and a second threaded rod are separately arranged. A third U-shaped plate 20 is slidably arranged on the two sliding grooves 26. One end of the third U-shaped plate is slidably arranged on the sliding rod 25, and the other end of the third U-shaped plate is threadedly connected to the second threaded rod. At the end of the support plate 27, a moving motor 4 is fixed. The output shaft of the moving motor 4 is connected to the second threaded rod through a coupling. Below the third U-shaped plate 20, a hydraulic cylinder 21 is fixed. The telescopic end of the hydraulic cylinder 21 is fixed with a pressing block 31. The moving motor 4 drives the second threaded rod to rotate through the output shaft. The second threaded rod drives the third U-shaped plate 20 to move. The third U-shaped plate 20 drives the hydraulic cylinder 21 to move. The hydraulic cylinder 21 drives the pressing block 31 to move. When the pressing block 31 moves to a suitable position, the telescopic end of the hydraulic cylinder 21 drives the pressing block 31 to move downward. The pressing block 31 descends to press the bar stock 35, thereby straightening the bar stock 35.

[0039] The straightening assembly further includes two support frames 3 and several U-shaped blocks 29. The two support frames 3 and several U-shaped blocks 29 are all fixed on the support plate 27, and several U-shaped blocks 29 are located between the two support frames 3. Pressure sensors 30 are arranged on several U-shaped blocks 29. The two support frames 3 can support both ends of the bar stock 35, and several U-shaped blocks 29 provide installation positions for the pressure sensors 30.

[0040] Above the bottom plate 12, a blanking box 6 is fixed. Inside the blanking box 6, a falling plate 39 is fixed. Inside the blanking box 6, a collection box 5 is slidably arranged. The collection box 5 is located below the falling plate 39. The cut bar stock 35 falls onto the falling plate 39, and the falling plate 39 guides the bar stock 35 into the collection box 5.

[0041] The working principle of the present invention:

[0042] The threaded motor 15 drives the first threaded rod to rotate through the output shaft. The first threaded rod drives the moving plate 23 to move. The moving plate 23 drives the rotating motor 16 and the electric three-jaw chuck 22 to move. The electric three-jaw chuck 22 drives the bar stock 35 to move. The bar stock 35 moves to the two support frames 3. The rotating motor 16 drives the electric three-jaw chuck 22 to rotate through the output shaft. The electric three-jaw chuck 22 drives the bar stock 35 to rotate. The bar stock 35 drives the pressure sensor 30 at the corresponding position to rotate. According to the pressure value, the moving motor 4 drives the second threaded rod to rotate through the output shaft. The second threaded rod drives the third U-shaped plate 20 to move. The third U-shaped plate 20 drives the hydraulic cylinder 21 to move. The hydraulic cylinder 21 drives the extrusion block 31 to move. When the extrusion block 31 moves to a suitable position, the telescopic end of the hydraulic cylinder 21 drives the extrusion block 31 to move downward. The extrusion block 31 descends to extrude the bar stock 35. After multiple extrusions, the straightening of the bar stock 35 is completed. After the straightening is completed, the threaded motor 15 drives the first threaded rod to rotate in the reverse direction through the output shaft. The first threaded rod drives the moving plate 23 to move in the reverse direction. The moving plate 23 drives the rotating motor 16 and the electric three-jaw chuck 22 to move in the reverse direction. The electric three-jaw chuck 22 drives the bar stock 35 to move in the reverse direction. The bar stock 35 moves to the first wheel frame 24 and the second wheel frame 36. The electric push rod 17 drives the groove plate 43 to move. The groove plate 43 squeezes the two third spring sleeve rods 13 to contract, so as to move the groove plate 43 to the electric saw 10. The threaded motor 15 drives the first threaded rod to rotate through the output shaft. The first threaded rod drives the moving plate 23 to move. The moving plate 23 drives the rotating motor 16 and the electric three-jaw chuck 22 to move. The electric three-jaw chuck 22 drives the bar stock 35 to move. The bar stock 35 abuts against the rotating plate 32, driving the rotating plate 32 to rotate. The rotating plate 32 drives the adjustable telescopic plate 41 to move. The adjustable telescopic plate 41 drives the inclined block to move. The inclined block drives the L-shaped block 19 to move. The L-shaped block 19 rotates between the electric saw 10 and the lower pressing plate. The cam motor 34 drives the cam 33 to rotate through the output shaft. The cam 33 drives the lower pressing plate to descend. The lower pressing plate drives the L-shaped block 19 to descend. The L-shaped block 19 drives the electric saw 10 to move. The electric saw 10 cuts the bar stock 35. The submersible pump transports the coolant to the elastic hose 42. The elastic hose 42 transports the coolant to the spray pipe. The spray pipe sprays the coolant onto the electric saw 10. The electric saw 10 cuts the raw material. The cut bar stock 35 falls onto the falling plate 39. The falling plate 39 guides the bar stock 35 into the collection box 5.

[0043] The above describes the preferred embodiments of the present patent in detail. However, the present patent is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various changes can be made without departing from the gist of the present patent.

Claims

1. A pretreatment device for motor shaft production, comprising a bottom plate (12) and a cutting assembly, characterized in that, The cutting assembly includes a mounting plate (1), a first spring sleeve rod (7), a liquid storage tank (9), and two second spring sleeve rods (8). The mounting plate (1) is fixed above the bottom plate (12). A moving groove (2) is formed in the mounting plate (1). A moving block (38) is detachably arranged inside the moving groove (2). The moving block (38) is L-shaped. A rotating plate (32) is rotatably arranged on the moving block (38). An adjustable telescopic plate (41) is fixed on the rotating plate (32). An inclined block is fixed at the end of the adjustable telescopic plate (41). The first spring sleeve rod (7) is rotatably arranged above the bottom plate (12). An L-shaped block (19) is fixed at the end of the first spring sleeve rod (7). The inclined block abuts against the L-shaped block (19). A saw (10) is fixed above the two second spring sleeve rods (8). A spray pipe is arranged above the saw (10). The liquid storage tank (9) is filled with coolant inside. A submersible pump is arranged inside the liquid storage tank (9). An elastic hose (42) is arranged at the water outlet of the submersible pump. The elastic hose (42) is connected to the spray pipe. A switching assembly and a straightening assembly are arranged above the bottom plate (12). The straightening assembly is located on the side of the mounting plate (1). The switching assembly includes a first U-shaped plate (14). Two second vertical plates (37) are fixed below the first U-shaped plate (14). Both of the two second vertical plates (37) are fixed above the bottom plate (12). An electric push rod (17) and two third spring sleeve rods (13) are respectively fixed on the inner wall of the first U-shaped plate (14). The electric push rod (17) and the two third spring sleeve rods (13) are in opposite directions. A groove plate (43) is arranged at the ends of the electric push rod (17) and the two third spring sleeve rods (13). A first threaded rod is rotatably arranged inside the groove plate (43). A sliding block (40) is slidably arranged inside the groove plate (43). A first wheel frame (24) is arranged above the sliding block (40). A second wheel frame (36) is fixed inside the groove plate (43). A moving plate (23) is threadedly connected to the first threaded rod. A rotating motor (16) is fixed on the side of the moving plate (23). The output shaft of the rotating motor (16) penetrates and extends out of the moving plate (23). An electric three-jaw chuck (22) is fixed on the output shaft of the rotating motor (16). A bar stock (35) is fixed on the electric three-jaw chuck (22). The bar stock (35) is located on the first wheel frame (24) and the second wheel frame (36). A threaded motor (15) is fixed at the end of the groove plate (43). The output shaft of the threaded motor (15) is connected to the first threaded rod through a coupling. A second U-shaped plate (18) is fixed above the first U-shaped plate (14). A fixing plate (11) is fixed above the second U-shaped plate (18). A cam motor (34) is fixed on the side of the fixing plate (11). The output shaft of the cam motor (34) penetrates and extends out of the fixing plate (11). A cam (33) is fixed on the output shaft of the cam motor (34). The cam (33) is located above the lower pressing plate.

2. The pretreatment device for motor shaft production according to claim 1, characterized in that, Above the described electric saw (10), there are two telescopic rods. A lower pressing plate is fixed above the two telescopic rods, and a locking member is provided on the adjustable telescopic plate (41).

3. The pretreatment device for motor shaft production according to claim 1, characterized in that, The straightening assembly includes a support plate (27). Below the support plate (27), two first vertical plates (28) are fixed. The two first vertical plates (28) are fixed above the bottom plate (12). Sliding grooves (26) are provided on both sides of the support plate (27). A sliding rod (25) and a second threaded rod are separately arranged inside the two sliding grooves (26). A third U-shaped plate (20) is slidably arranged on the two sliding grooves (26). One end of the third U-shaped plate is slidably arranged on the sliding rod (25), and the other end of the third U-shaped plate is threadedly connected to the second threaded rod. A moving motor (4) is fixed at the end of the support plate (27). The output shaft of the moving motor (4) is connected to the second threaded rod through a coupling. A hydraulic cylinder (21) is fixed below the third U-shaped plate (20), and an extrusion block (31) is fixed at the telescopic end of the hydraulic cylinder (21).

4. The pretreatment device for motor shaft production according to claim 3, characterized in that, The straightening assembly further includes two support frames (3) and several U-shaped blocks (29). The two support frames (3) and several U-shaped blocks (29) are all fixed on the support plate (27), and several U-shaped blocks (29) are located between the two support frames (3). Pressure sensors (30) are provided on several U-shaped blocks (29).

5. The pretreatment device for motor shaft production according to claim 4, characterized in that, A blanking box (6) is fixed above the bottom plate (12). A falling plate (39) is fixed inside the blanking box (6). A collection box (5) is slidably arranged inside the blanking box (6), and the collection box (5) is located below the falling plate (39).

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