A rotor shaft press fitting

Abstract

The present invention relates to the technical field of rotor and shaft press-fitting, and specifically to a rotor shaft press-fitting tool, comprising a support frame, a workbench fixedly connected to the middle of the support frame, two symmetrically distributed clamping and pressing devices provided on the top of the workbench, a shaft clamping device provided on the top of the clamping and pressing device; the clamping and pressing device comprises two first support rods fixedly connected to the top surface of the workbench, a first shaft rotatably connected between the two first support rods. When the clamping and pressing device of the present invention is working, it only needs to start the hydraulic cylinder to automatically clamp the rotor directly below the shaft, and then the shaft will be inserted into the rotor, completing the clamping, positioning and press-fitting actions in a distributed manner, and at the same time, utilizing the adjustability of the distance between the pressure sensor on the positioning plate and the first column, so as to control the depth of the shaft inserted into the rotor, and the depth of each press-fitting is consistent, thereby ensuring the press-fitting quality.

Description

Technical Field

[0001] The invention relates to the technical field of rotor and shaft press-fitting, in particular to a rotor shaft press-fitting tool. Background Art

[0002] Motors are devices that convert electrical energy into mechanical energy. They use an energized coil (i.e., stator winding) to generate a rotating magnetic field and act on the rotor (such as a squirrel cage closed aluminum frame) to form a magnetic electrodynamic rotating torque. Motors are divided into DC motors and AC motors according to the power supply used. They can be synchronous motors or asynchronous motors (the speed of the motor stator magnetic field and the speed of the rotor rotation do not maintain synchronous speed). The motor is mainly composed of a stator and a rotor. The direction of the force movement of the energized wire in the magnetic field is related to the direction of the current and the direction of the magnetic flux lines (magnetic field direction). The working principle of the motor is that the magnetic field acts on the force of the current, causing the motor to rotate.

[0003] At present, in the process of motor production, the shaft needs to be accurately inserted into the rotor hole to a certain depth for press-fitting. When the existing equipment is in use, the operator will use the equipment to press the fixed shaft into the rotor hole. The press-fitting depth of the shaft depends entirely on the operator's experience, resulting in poor press-fitting accuracy and poor press-fitting quality of the rotor shaft, which in turn affects the quality of motor use.

[0004] The above information disclosed in this Background section is only for enhancement of understanding of the background of the present disclosure and therefore it may contain information that does not constitute the prior art that is already known to one of ordinary skill in the art. Summary of the invention

[0005] In view of the problems in the prior art, the present invention provides a rotor shaft press-fitting tool.

[0006] The technical solution adopted by the present invention to solve the technical problem is: a rotor shaft press-fitting tool, comprising a support frame, a workbench is fixedly connected to the middle of the support frame, two symmetrically distributed clamping and pressing devices are arranged on the top of the workbench, and a shaft clamping device is arranged on the top of the clamping and pressing device;

[0007] The cam is provided with a first gear which is engaged with the first and second gears and is engaged with the first and second gears of the first and second gears respectively.

[0008] The rotating shaft clamping device includes a chassis fixedly connected to a connecting rod, a second support rod fixedly connected to the top of the chassis, a top plate fixedly connected to the top of the second support rod, a first cylinder fixedly connected to the bottom surface of the top plate, a piston fixedly connected to the bottom end of the first column, a second cylinder body is provided outside the piston, the first cylinder and the piston are both slidably connected to the second cylinder, a first pipe fixedly connected to one side of the outer wall of the second cylinder, a one-way valve fixedly connected to the middle of the first pipe, a second pipe fixedly connected to the other side of the outer wall of the second cylinder, a solenoid valve fixedly connected to the middle of the second pipe, the second cylinder body, the first pipe and the second pipe are all filled with hydraulic oil, a transmission disk is fixedly connected to the bottom of the second cylinder, and four clamping structures are provided between the transmission disk and the chassis.

[0009] Specifically, the clamping structure includes a limit rod fixedly connected to the top surface of the chassis, the limit rod is slidably connected to a sliding rod inside the limit rod, the top of the sliding rod is fixedly connected to the transmission plate, and the sliding rod is rotatably connected to two first rods at one end away from the transmission plate, the first rod is rotatably connected to the outside of one end away from the sliding rod, the second rod is fixedly connected to the second clamping block at one end away from the first rod, the first rod is rotatably connected to the inside of one end away from the sliding rod, the second spring is fixedly connected to one side of the outer wall of the positioning column, the second spring is fixedly connected to the limit rod at one end away from the positioning column, the top of the chassis is fixedly connected to a limit block, and the limit block is slidably connected to the second rod.

[0010] Specifically, a circular blind hole is opened on the top of the workbench, a sliding hole is passed through the circular blind hole and the chassis, a rotating shaft is slidably connected inside the sliding hole, and a rotor is placed on the top of the circular blind hole.

[0011] Specifically, rectangular through holes are opened on both sides of the workbench, and the first rack passes through the rectangular through holes.

[0012] Specifically, a support plate is fixedly connected to the top of the support frame, a hydraulic cylinder is fixedly connected to the bottom of the support plate, and a top end of an output shaft of the hydraulic cylinder is fixedly connected to a top plate.

[0013] Specifically, the hydraulic cylinder and the external single chip microcomputer are both electrically connected to the pressure sensor.

[0014] Beneficial effects of the present invention:

[0015] (1) The rotor shaft press-fitting tool described in the present invention can reliably clamp and position the shaft through the shaft clamping device and the clamping structure, and can clamp shafts of different diameters and realize automatic centering. To clamp the shaft, one only needs to hold the shaft and lift it upward. After the press-fitting is completed, one only needs to open the solenoid valve to stop clamping the shaft. The operation is simple and easy to use.

[0016] (2) The rotor shaft pressing tool described in the present invention, when the clamping and pressing device is in operation, only needs to start the hydraulic cylinder to automatically clamp the rotor to the bottom of the shaft, and then the shaft will be inserted into the rotor, completing the clamping, positioning and pressing actions in a distributed manner. At the same time, the distance between the pressure sensor on the positioning plate and the first column can be adjusted to control the depth of the shaft inserted into the rotor, and the depth of each pressing is consistent, thereby ensuring the pressing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a partial cross-sectional view of the present invention;

[0020] Figure 3 It is a schematic diagram of the connection between the clamping device of the present invention and the rotating shaft clamping device;

[0021] Figure 4 A three-dimensional diagram of the rotating shaft clamping device of the present invention;

[0022] Figure 5 A partial cross-sectional view of the rotating shaft clamping device of the present invention;

[0023] Figure 6 A partial cross-sectional view of the clamping structure of the present invention;

[0024] Figure 7 It is a schematic diagram of the internal structure of the first column of the present invention;

[0025] Figure 8 It is a schematic diagram of the connection between the positioning plate and the pressure sensor of the present invention.

[0026] In the figure: 1 support frame, 2 workbench, 3 clamping and pressing device, 4 rotating shaft clamping device, 5 first support rod, 6 first shaft, 7 first gear, 8 first rack, 9 second gear, 10 second rack, 11 push rod, 12 first clamping block, 13 shaped plate, 14 first column, 15 first spring, 16 disc, 17 pressing column, 18 connecting rod, 19 positioning plate, 20 pressure sensor, 21 chassis, 22 second support rod, 23 Top plate, 24 first cylinder, 25 piston, 26 second cylinder, 27 first pipeline, 28 one-way valve, 29 second pipeline, 30 solenoid valve, 31 transmission plate, 32 clamping structure, 33 limit rod, 34 slide rod, 35 first rod, 36 second rod, 37 second clamping block, 38 positioning column, 39 second spring, 40 limit block, 41 circular blind hole, 42 slide hole, 43 rotating shaft, 44 rotor, 45 rectangular through hole, 46 hydraulic cylinder. DETAILED DESCRIPTION

[0027] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these example embodiments are provided so that the description of the present disclosure will be more comprehensive and complete and the concepts of the example embodiments will be fully conveyed to those skilled in the art. The accompanying drawings are only schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the figures represent the same or similar parts, and thus their repeated description will be omitted.

[0028] In addition, the described features, structures or characteristics may be combined in one or more example embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the example embodiments of the present disclosure. However, those skilled in the art will appreciate that the technical solutions of the present disclosure may be practiced while omitting one or more of the specific details, or other methods, components, steps, etc. may be adopted. In other cases, well-known structures, methods, implementations or operations are not shown or described in detail to avoid obscuring various aspects of the present disclosure.

[0029] like Figure 1-Figure 8 As shown, a rotor shaft press-fitting tool of the present invention comprises a support frame 1, a workbench 2 is fixedly connected to the middle of the support frame 1, two symmetrically distributed clamping and pressing devices 3 are arranged on the top of the workbench 2, and a shaft clamping device 4 is arranged on the top of the clamping and pressing device 3;

[0030] The clamping and pressing device 3 includes two first support rods 5 fixedly connected to the top surface of the workbench 2, a first shaft 6 is rotatably connected between the two first support rods 5, a first gear 7 is fixedly connected to the middle of the first shaft 6, a first rack 8 is meshed on one side of the first gear 7, second gears 9 are fixedly connected on both sides of the first gear 7 on the first shaft 6, a second rack 10 is meshed at the bottom of the second gear 9, a push rod 11 is fixedly connected to the bottom of the second rack 10, and a first clamping block 12 is fixedly connected to the end of the push rod 11 away from the first rack 8. A convex plate 13 is connected, and the convex plate 13 is slidably connected to the push rod 11. The top of the first rack 8 is fixedly connected to the first column 14, and the bottom of the inner cavity of the first column 14 is fixedly connected to the first spring 15. The top of the first spring 15 is fixedly connected to a disc 16, and the disc 16 is slidably connected to the inner wall of the first column 14. The top of the disc 16 is fixedly connected to a pressing column 17, and the top of the pressing column 17 is fixedly connected to a connecting rod 18. The outer peripheral surface of the pressing column 17 is threadedly connected to a positioning disk 19, and the bottom surface of the positioning disk 19 is fixedly connected to a pressure sensor 20. The positioning plate 19 is moved to adjust the distance between the pressure sensor 20 below the positioning plate 19 and the top surface of the first column 14, and the pressing column 17 is driven to descend through the connecting rod 18. The pressing column 17 drives the disc 16 to slide downward in the first column 14, and the disc 16 drives the first spring 15 to compress. The first spring 15 drives the first rack 8 to descend through the elastic force and the gravity of the first column 14 itself, and the first rack 8 drives the first gear 7 to rotate through meshing, and the first gear 7 drives the second gear 9 to rotate through the first shaft 6, and the second gear 9 drives the second rack 10, and the second rack 10 drives the push rod 11 to slide, and the push rod 11 drives the push rod 11 to slide. The rod 11 drives the first clamping block 12 to clamp the rotor 44. When the first spring 15 continues to be compressed, the first clamping block 12 continues to clamp the rotor 44. When the pressure sensor 20 contacts the first column 14, pressure is generated. The pressure sensor 20 is electrically connected to the external single-chip computer and the hydraulic cylinder 46. When the pressure reaches a certain value, the pressure sensor 20 controls the output shaft of the hydraulic cylinder 46 to be unable to continue to extend, so that the clamping and pressing device 3 can arbitrarily control the extension length of the output shaft of the hydraulic cylinder 46 while clamping the rotor 44, thereby controlling the position of the rotating shaft 43 in the rotor 44;

[0031] The rotating shaft clamping device 4 includes a chassis 21 fixedly connected to the connecting rod 18, a second support rod 22 is fixedly connected to the top of the chassis 21, a top plate 23 is fixedly connected to the top of the second support rod 22, a first cylinder 24 is fixedly connected to the bottom of the top plate 23, a piston 25 is fixedly connected to the bottom end of the first cylinder, a second cylinder 26 is arranged outside the piston 25, the first cylinder 24 and the piston 25 are both slidably connected to the second cylinder 26, a first pipe 27 is fixedly connected to one side of the outer wall of the second cylinder 26, a one-way valve 28 is fixedly connected to the middle of the first pipe 27, a second pipe 29 is fixedly connected to the other side of the outer wall of the second cylinder 26, a solenoid valve 30 is fixedly connected to the middle of the second pipe 29, and the second cylinder 2 6. The first pipeline 27 and the second pipeline 29 are both filled with hydraulic oil. A transmission disc 31 is fixedly connected to the bottom of the second column 26. Four clamping structures 32 are arranged between the transmission disc 31 and the chassis 21. The transmission disc 31 passes through the chassis 21 through the rotating shaft 43 and then slides upward, thereby driving the transmission disc 31 to slide upward. The transmission disc 31 drives the second column 26 to rise. At this time, the hydraulic oil at the bottom of the piston 25 is squeezed into the first pipeline 27, and enters the top of the piston 25 after passing through the one-way valve 28. At this time, the transmission disc 31 cannot descend by gravity. When the press assembly is completed, the solenoid valve 30 is opened, and the second column 26 moves downward under the action of gravity. The hydraulic oil at the top of the piston 25 is pressed into the bottom of the piston 25 through the second pipeline 29, and the transmission disc 31 descends.

[0032] Specifically, the clamping structure 32 includes a limiting rod 33 fixedly connected to the top surface of the chassis 21, a sliding rod 34 is slidably connected inside the limiting rod 33, the top of the sliding rod 34 is fixedly connected to the transmission plate 31, and the sliding rod 34 is rotatably connected to two first rods 35 at one end away from the transmission plate 31, and the first rod 35 is rotatably connected to the outside of the end away from the sliding rod 34 with a second rod 36, and the second rod 36 is fixedly connected to the second clamping block 37 at one end away from the first rod 35, and the first rod 35 is rotatably connected to the inside of the end away from the sliding rod 34 with a positioning column 38, and one side of the outer wall of the positioning column 38 is fixedly connected to a second spring 39, and the end of the second spring 39 away from the positioning column 38 is connected to the limiting rod 33 is fixedly connected, and a limiting block 40 is fixedly connected to the top of the chassis 21. The limiting block 40 is slidably connected to the second rod 36, and the transmission disk 31 is driven to move upward through the rotating shaft 43. The transmission disk 31 drives the sliding rod 34 to rise in the limiting rod 33, and the sliding rod 34 drives the first rod 35. The first rod 35 drives the second rod 36 to slide in the limiting block 40 and drives the positioning column 38 away from the limiting rod 33. The positioning column 38 drives the second spring 39 to stretch, and the second rod 36 slides toward the second clamping block 37. The second rod 36 drives the second clamping block 37 to clamp the rotating shaft 43. When the transmission disk 31 descends, the spring is reset, the sliding rod 34 descends, and the second clamping block 37 no longer clamps the rotating shaft 43.

[0033] Specifically, a circular blind hole 41 is opened on the top of the workbench 2, a sliding hole 42 is penetrated inside the circular blind hole 41 and the chassis 21, a rotating shaft 43 is slidably connected inside the sliding hole 42, a rotor 44 is placed on the top of the circular blind hole 41, the rotor 44 is initially placed through the circular blind hole 41, and slides upward in the sliding hole 42 through the rotating shaft 43, thereby squeezing the transmission plate 31 to rise.

[0034] Specifically, rectangular through holes 45 are opened on both sides of the workbench 2, and the first rack 8 passes through the rectangular through holes 45. The rectangular through holes 45 facilitate the first rack 8 to descend without knocking over the workbench 2, causing the first rack 8 to be unable to descend.

[0035] Specifically, a support plate is fixedly connected to the top of the support frame 1, and a hydraulic cylinder 46 is fixedly connected to the bottom of the support plate. The top end of the output shaft of the hydraulic cylinder 46 is fixedly connected to the top plate 23. The output power is provided by the hydraulic cylinder 46 to drive the top plate 23 to descend, and the top plate 23 drives the second support rod 22, and the second support rod 22 drives the chassis 21, and the chassis 21 drives the pressing column 17 to rise or fall, thereby starting the clamping and pressing device 3.

[0036] Specifically, the hydraulic cylinder 46 and the external single chip computer are electrically connected to the pressure sensor 20. When the force on the pressure sensor 20 reaches a set value, the extension distance of the output shaft of the hydraulic cylinder 46 is controlled, thereby controlling the depth of the rotary pump 43 inserted into the rotor 44.

[0037] The implementation method is as follows: Preparation stage: first, rotate the positioning plate 19, and use the threaded connection between the positioning plate 19 and the pressing column 17 to adjust the distance between the pressure sensor 20 and the top surface of the first column 14, and control the extension distance of the output shaft of the hydraulic cylinder 46, thereby controlling the depth of the shaft 43 inserted into the rotor 44:

[0038] Install the rotating shaft 43: The staff holds the rotating shaft 43 and passes it through the sliding hole 42 on the chassis 21, so that the top of the rotating shaft 43 touches the bottom surface of the transmission disc 31, and then drives the rotating shaft 43 to slide upward, and the rotating shaft 43 drives the transmission disc 31 to rise. The clamping structure 32 cooperates with the second column 26, the piston 25, the first pipe 27, the one-way valve 28 and the first cylinder 24 on the transmission disc 31 to clamp the rotating shaft 43. After the press-fitting is completed, the solenoid valve 30 is opened, and the clamping structure 32 will no longer clamp the rotating shaft 43;

[0039] Pressing steps: After the rotating shaft 43 is clamped, the rotor 44 is placed in the circular blind hole 41, and then the hydraulic cylinder 46 is started. The hydraulic cylinder 46 drives the clamping and pressing device 3 to clamp the rotor 44 first, and drives the rotating shaft clamping device 4 to descend. As the first spring 15 in the clamping and pressing device 3 is slowly compressed, the rotating shaft clamping device 4 drives the rotating shaft 43 to slowly insert into the rotor 44. When the pressure sensor 20 contacts the top of the first column 14 and generates pressure, the output shaft of the hydraulic cylinder 46 stops extending. At this time, the rotating shaft 43 is inserted into the rotor 44 to a predetermined depth. Then the solenoid valve 30 is opened and the output shaft of the hydraulic cylinder 46 is shortened. At this time, the rotating shaft clamping device 4 no longer clamps the rotating shaft 43. The hydraulic cylinder 46 drives the rotating shaft clamping device 4 to rise and drives the clamping and pressing device 3 to reset. Then the rotor 44 and the rotating shaft 43 that have been pressed can be taken out.

[0040] Technical effects and advantages: The rotating shaft 43 can be reliably clamped and positioned by the rotating shaft clamping device 4 and the clamping structure 32, and the rotating shafts 43 of different diameters can be clamped, and automatic centering can be achieved. To clamp the rotating shaft 43, it is only necessary to hold the rotating shaft 43 and lift it upward. After the press-fitting is completed, it is only necessary to open the solenoid valve 30 to stop clamping the rotating shaft 43. The operation is simple and convenient to use.

[0041] When the clamping and pressing device 3 is working, it only needs to start the hydraulic cylinder 46 to automatically clamp the rotor 44 to the bottom of the shaft 43, and then the shaft 43 will be inserted into the rotor 44 to complete the clamping positioning and pressing actions. At the same time, the distance adjustability between the pressure sensor 20 on the positioning plate 19 and the first column 14 can be used to control the depth of the shaft 43 inserted into the rotor 44, and the depth of each pressing is consistent to ensure the pressing quality. This embodiment specifically solves the problem that in the motor production process, the shaft 43 needs to be inserted into the hole of the rotor 44 for pressing, and the existing equipment has large manual installation errors. The pressing depth of the shaft 43 depends entirely on the experience of the operator, resulting in poor pressing accuracy and poor pressing quality of the rotor 44 shaft 43, which in turn affects the quality of the motor.

[0042] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

[0043] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0044] Secondly: In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

[0045] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A rotor shaft press-fitting tool, characterized in that: It comprises a support frame (1), a workbench (2) is fixedly connected to the middle of the support frame (1), two symmetrically distributed clamping and pressing devices (3) are provided on the top of the workbench (2), and a rotating shaft clamping device (4) is provided on the top of the clamping and pressing device (3); The clamping and pressing device (3) comprises two first support rods (5) fixedly connected to the top surface of the workbench (2); a first shaft (6) is rotatably connected between the two first support rods (5); a first gear (7) is fixedly connected to the middle of the first shaft (6); a first rack (8) is meshed on one side of the first gear (7); second gears (9) are fixedly connected on both sides of the first gear (7) on the first shaft (6); a second rack (10) is meshed at the bottom of the second gear (9); a push rod (11) is fixedly connected to the bottom of the second rack (10); a first clamping block (12) is fixedly connected to the end of the push rod (11) away from the first rack (8); the top of the workbench (2) The first rack (8) is fixedly connected with a first column (14) at the top, and a first spring (15) is fixedly connected to the bottom of the inner cavity of the first column (14). The top of the first spring (15) is fixedly connected with a disc (16), and the disc (16) is slidably connected to the inner wall of the first column (14). The top of the disc (16) is fixedly connected with a pressing column (17), and the top of the pressing column (17) is fixedly connected with a connecting rod (18). The outer peripheral surface of the pressing column (17) is threadedly connected with a positioning plate (19), and the bottom surface of the positioning plate (19) is fixedly connected with a pressure sensor (20); The rotating shaft clamping device (4) comprises a chassis (21) fixedly connected to a connecting rod (18); a second supporting rod (22) is fixedly connected to the top of the chassis (21); a top plate (23) is fixedly connected to the top of the second supporting rod (22); a first cylinder (24) is fixedly connected to the bottom surface of the top plate (23); a piston (25) is fixedly connected to the bottom end of the first cylinder; a second column (26) is provided outside the piston (25); the first cylinder (24) and the piston (25) are both slidably connected to the second column (26); and the second column (26) A first pipeline (27) is fixedly connected to one side of the outer wall, a one-way valve (28) is fixedly connected to the middle of the first pipeline (27), a second pipeline (29) is fixedly connected to the other side of the outer wall of the second column (26), a solenoid valve (30) is fixedly connected to the middle of the second pipeline (29), the second column (26), the first pipeline (27) and the second pipeline (29) are all filled with hydraulic oil, a transmission disc (31) is fixedly connected to the bottom of the second column (26), and four clamping structures (32) are provided between the transmission disc (31) and the chassis (21); The top of the support frame (1) is fixedly connected to a support plate, the bottom of the support plate is fixedly connected to a hydraulic cylinder (46), and the top end of the output shaft of the hydraulic cylinder (46) is fixedly connected to the top plate (23); The hydraulic cylinder (46) and the external single chip computer are both electrically connected to the pressure sensor (20).

2. The rotor shaft press-fitting tool according to claim 1, characterized in that: The clamping structure (32) comprises a limiting rod (33) fixedly connected to the top surface of the chassis (21); a sliding rod (34) is slidably connected inside the limiting rod (33); the top end of the sliding rod (34) is fixedly connected to the transmission plate (31); one end of the sliding rod (34) away from the transmission plate (31) is rotatably connected to two first rods (35); the outer side of one end of the first rod (35) away from the sliding rod (34) is rotatably connected to a second rod (36); the second rod (36) away from the first A second clamping block (37) is fixedly connected to one end of the rod (35); a positioning column (38) is rotatably connected to the inner side of one end of the first rod (35) away from the sliding rod (34); a second spring (39) is fixedly connected to one side of the outer wall of the positioning column (38); an end of the second spring (39) away from the positioning column (38) is fixedly connected to the limiting rod (33); a limiting block (40) is fixedly connected to the top of the chassis (21); and the limiting block (40) is slidably connected to the second rod (36).

3. The rotor shaft press-fitting tool according to claim 1, characterized in that: A circular blind hole (41) is opened on the top of the workbench (2), a sliding hole (42) passes through the circular blind hole (41) and the bottom plate (21), a rotating shaft (43) is slidably connected inside the sliding hole (42), and a rotor (44) is placed on the top of the circular blind hole (41).

4. The rotor shaft press-fitting tool according to claim 1, characterized in that: Rectangular through holes (45) are opened on both sides of the interior of the workbench (2), and the first rack (8) passes through the rectangular through holes (45).

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