Rotor press-fitting machine of small motor

Abstract

The utility model relates to a rotor press-fitting machine of a small motor. The rotor press-fitting machine comprises a cabinet, a cabinet plate transversely fixed at the top of the cabinet, a press-fitting assembly arranged between the cabinet plate and the cabinet, and a material loading assembly arranged at the top of the cabinet plate and matched with the press-fitting assembly. The press-fitting assembly comprises a lifting air cylinder at the bottom of the cabinet plate, a traction plate transversely fixed to the telescopic end of the lifting air cylinder, two guide columns vertically connected into the cabinet plate in a penetrating mode and symmetrically arranged on the left side and the right side of the lifting air cylinder respectively, a pressing plate transversely fixed between the two guide columns and located above the cabinet plate, and a press-fitting unit arranged at the bottom of the pressing plate. The material loading assembly comprises a moving seat which is movably connected to the top of the cabinet plate and has a front-back translation function and at least two positioning seats which are fixed to the top of the moving seat and are sequentially arranged from left to right; the transmission assembly is arranged between the pressing plate and the moving seat; according to the utility model, at least two annular commutators can be pressed at the same time, so that the processing efficiency is improved, and the use is convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to a rotor press fitting machine of small motor. BACKGROUND

[0002] The motor rotor plays a key role in the motor, which converts electric energy into mechanical energy through interaction with the stator to drive the equipment to run. Although the small motor has small power, the structure of the motor rotor is still composed of a rotating shaft, a core and a bearing. In a direct current motor, a commutator needs to be installed on the motor rotor. The main function of the commutator is to convert alternating current into direct current. The ring is the most common shape of the commutator. Because of the design of the ring, the current is uniformly distributed in the stator winding, which is beneficial to the stable operation of the motor. The ring-shaped commutator is generally connected by interference fit and is sleeved on one end of the rotating shaft of the rotor. The sleeve of the ring-shaped commutator needs to be fixed on the rotating shaft with the help of a matching press fitting equipment. However, the existing press fitting equipment can only press fit one ring-shaped commutator at a time, and the processing efficiency is low. At the same time, the components used to fix the motor rotor in the existing press fitting equipment are far away from the operator, and the components used to fix the ring-shaped commutator are also far away from the operator and always downward, which makes the operator more difficult to take and place the motor rotor and the ring-shaped commutator. Therefore, it is inconvenient to use, and further improvement is needed. SUMMARY

[0003] In view of the above-mentioned status of the prior art, the technical problem to be solved by the utility model is to provide a rotor press fitting machine of small motor which can simultaneously press fit at least two ring-shaped commutators to improve the processing efficiency, and also enables the operator to take and place the motor rotor and the ring-shaped commutator more easily to facilitate use.

[0004] The utility model adopts the technical scheme that: a rotor press fitting machine of small motor, including the cabinet, the cabinet board is fixed horizontally on the top of the cabinet, the press fitting assembly is arranged between the cabinet board and the cabinet, and the load assembly is arranged on the top of the cabinet board and cooperates with the press fitting assembly, characterized in that:

[0005] The press fitting assembly includes a lifting cylinder at the bottom of the cabinet board, a traction plate fixed horizontally on the extension end of the lifting cylinder, two guide columns vertically connected in the cabinet board and symmetrically arranged on the left and right sides of the lifting cylinder, a pressing plate fixed horizontally between the two guide columns and located above the cabinet board, and a press fitting unit arranged at the bottom of the pressing plate. The extension end of the lifting cylinder is vertically downward, and the lower ends of the two guide columns are fixed on the traction plate.

[0006] The load assembly includes a moving seat movably connected to the top of the cabinet board to have forward and backward translation function, and at least two positioning seats fixed on the top of the moving seat and arranged from left to right.

[0007] The transmission assembly is arranged between the pressing plate and the moving seat, and comprises a side frame fixed on the top of the cabinet plate, a guide plate vertically and movably connected to the side frame to have the function of vertical movement, a swing arm rotatably connected to the side frame and located between the side frame and the guide plate, a limiting block fixed on the side frame and located below the swing arm, a swing rod movably inserted into the limiting block, a connecting rod rotatably connected to the lower end of the swing rod, and a return spring fixed between the root of the connecting rod and the lower end of the swing rod.

[0008] Preferably, the pressing unit comprises two side plates vertically fixed on the bottom of the pressing plate and arranged symmetrically left and right, a seat block arranged between the two side plates, and at least two pressing modules arranged in sequence from left to right on the seat block, the number of the pressing modules being equal to the number of the positioning seats, and each of the pressing modules being arranged directly above a corresponding positioning seat.

[0009] Preferably, the pressing module comprises a pressing shaft movably inserted into the seat block, a pressing head concentrically fixed on the lower end of the pressing shaft, a stop ring fixed on the upper end of the pressing shaft and located above the seat block, and a pressing spring sleeved on the pressing shaft and located between the pressing head and the seat block, the pressing spring being always in a compressed state to make the pressing shaft always have the tendency of downward movement and reset.

[0010] Preferably, the guide plate is provided with vertically distributed guide grooves, the lower end of the guide groove is formed with a turning groove downward and rearward, the upper end of the swing arm is further connected with a rotatable roller, and the roller is rolled and embedded in the guide groove or the turning groove.

[0011] Preferably, a swing mechanism is further arranged between the seat block and the two side plates, and the swing mechanism comprises a pin shaft, a traction arm and a swing cylinder, the pin shaft comprises two pin shafts which are fixed transversely on the left and right sides of the seat block and arranged concentrically, the ends of the two pin shafts are rotatably inserted into the two side plates, the end of one of the pin shafts is fixed with the traction arm, the shell of the swing cylinder is rotatably connected to one of the side plates and located rearward of the traction arm, and the telescopic end of the swing cylinder is arranged forward and rotatably connected to the end of the traction arm.

[0012] Preferably, the bottom of the pressing plate is further fixed with at least two pressure sensors arranged in sequence from left to right, the number of the pressure sensors being equal to the number of the pressing modules, and the sensing end of each of the pressure sensors is arranged vertically downward and cooperates with the upper end of the pressing shaft in a corresponding pressing module.

[0013] Preferably, the swing mechanism further comprises a fixed block fixed on the bottom of the pressing plate and located above the seat block, a moving block fixed on the upper side of the seat block, a limiting head fixed on the moving block, and a limiting column fixed on the fixed block and matched with the limiting head.

[0014] Preferably, a counterbore is formed in the center of the top of the positioning seat, a plurality of opening grooves are formed in the inner wall of the counterbore and distributed in the circumferential direction, a flexible positioning block is embedded in the inner wall of the counterbore, a clamping strip is formed on the side wall of the flexible positioning block and extends into the counterbore, and a shaft sleeve is embedded in the center of the bottom of the counterbore and distributed concentrically.

[0015] Preferably, a vertical calibration sleeve is fixed on the top of the moving seat, and a stop column is vertically arranged on the bottom of the pressing plate and located directly above the calibration sleeve, and a calibration column is vertically arranged on the end of the stop column and distributed concentrically with the calibration sleeve.

[0016] Compared with the prior art, the utility model has the advantages that: the utility model can simultaneously press and assemble at least two annular commutators, thereby improving the processing efficiency; meanwhile, the up-down movement of the pressing plate can be converted into the forward-backward movement of the material carrying assembly by the transmission assembly, so that the material carrying assembly can be moved close to the operator when the motor rotor is taken and placed; in addition, the forward-backward rotation of each press assembly head can be realized by the swing mechanism, so that the annular commutator is placed in the forward direction relative to each press assembly head, thereby enabling the operator to directly observe each press assembly head and quickly find the position, so that the operator can take and place the motor rotor and the annular commutator with less effort, thereby facilitating use. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 It is a right front side structure drawing of the utility model;

[0018] Fig. 2 It is a right rear side structure drawing of the pressing assembly, the material carrying assembly and the transmission assembly of the utility model;

[0019] Fig. 3 It is a left front side exploded structure drawing of the pressing assembly, the material carrying assembly and the transmission assembly of the utility model;

[0020] Fig. 4 It is a right front side bottom view structure drawing of the pressing unit of the utility model;

[0021] Fig. 5 It is a left rear side bottom view structure drawing of the pressing unit of the utility model;

[0022] Fig. 6 It is a left rear side exploded structure drawing of the material carrying assembly of the utility model. DETAILED DESCRIPTION

[0023] Unless otherwise defined, technical terms or scientific terms used in the present application shall have the ordinary meaning as understood by a person of ordinary skill in the art to which the present application pertains. The terms "first", "second", and similar terms are used herein merely to distinguish one element from another, and are not intended to imply any order or importance. The terms "include", "comprise", and similar terms are used herein to indicate the presence of the elements or objects that follow the terms, but not to the exclusion of other elements or objects. The terms "connected" and "coupled" are used herein to indicate any connection or coupling between two elements, which can be either direct or indirect, and can be mechanical, electrical, or any combination of these. The terms "upper", "lower", "left", "right", and similar terms are used herein merely to indicate relative positions, and can change accordingly when the absolute positions of the described objects change.

[0024] In order to keep the following description of the embodiments of the present application clear and concise, detailed descriptions of known functions and known components are omitted.

[0025] As shown in Figs. 1-6 A rotor press-fitting machine of a small motor includes a cabinet 1, a cabinet plate 2 horizontally fixed on the top of the cabinet 1, a press-fitting assembly 3 arranged between the cabinet plate 2 and the cabinet 1, and a material loading assembly 4 arranged on the top of the cabinet plate 2 and cooperated with the press-fitting assembly 3.

[0026] The press-fitting assembly 3 includes a lifting cylinder 34 arranged at the bottom of the cabinet plate 2, a traction plate 32 horizontally fixed on the telescopic end of the lifting cylinder 34, two guide columns 31 vertically and penetratingly connected in the cabinet plate 2 and symmetrically arranged on the left and right sides of the lifting cylinder 34 respectively, a pressing plate 33 horizontally fixed between the two guide columns 31 and located above the cabinet plate 2, and a press-fitting unit 35 arranged at the bottom of the pressing plate 33. The telescopic end of the lifting cylinder 34 is arranged vertically downward, and the lower ends of the two guide columns 31 are both fixed on the traction plate 32.

[0027] The material loading assembly 4 includes a moving seat 41 movably connected on the top of the cabinet plate 2 to have a front-to-back translation function, and at least two positioning seats 42 fixed on the top of the moving seat 41 and arranged in sequence from left to right.

[0028] Further comprising a transmission assembly 5 arranged between the pressing plate 33 and the moving seat 41, the transmission assembly 5 comprises a side frame 51 fixed on the top of the cabinet plate 2, a guide plate 52 vertically and movably connected on the side frame 51 to have the function of vertical movement, a swing arm 53 rotatably connected on the side frame 51 and located between the side frame 51 and the guide plate 52, a limiting block 54 fixed on the side frame 51 and located below the swing arm 53, a swing rod 55 movably arranged in the limiting block 54, a connecting rod 56 rotatably connected at the lower end of the swing rod 55, and a reset spring 57 fixed between the root of the connecting rod 56 and the lower end of the swing rod 55, the upper side of the guide plate 52 is fixed on the bottom of the pressing plate 33, the upper end of the swing arm 53 is movably connected on the guide plate 52, the upper end of the swing rod 55 is rotatably connected on the lower end of the swing arm 53, and the end of the connecting rod 56 is rotatably connected on the rear side of the moving seat 41.

[0029] The pressing unit 35 comprises two side plates 351 vertically fixed on the bottom of the pressing plate 33 and arranged symmetrically left and right, a seat block 352 arranged between the two side plates 351, and at least two pressing modules arranged on the seat block 352 and distributed in sequence from left to right, the number of the pressing modules is equal to the number of the positioning seats 42, and each pressing module is arranged directly above a corresponding positioning seat 42.

[0030] The pressing module comprises a pressing shaft 3510 movably arranged in the seat block 352, a pressing head concentrically fixed on the lower end of the pressing shaft 3510, a stop ring 3512 fixedly sleeved on the upper end of the pressing shaft 3510 and located above the seat block 352, and a pressing spring 3511 sleeved on the pressing shaft 3510 and located between the pressing head and the seat block 352, the pressing spring 3511 is always in a compressed state to make the pressing shaft 3510 always have the tendency of downward movement reset.

[0031] The guide plate 52 is provided with vertically distributed guide grooves 521, the lower end of the guide grooves 521 is formed with a turning groove 522 downward and rearward, the upper end of the swing arm 53 is further connected with a rotatable roller 58, and the roller 58 is rolled and embedded in the guide grooves 521 or the turning groove 522.

[0032] Further comprising a swing mechanism arranged between the seat block 352 and the two side plates 351, the swing mechanism comprises a pin shaft 353, a traction arm 354 and a swing cylinder 355, the pin shaft 353 comprises two, the two pin shafts 353 are fixed horizontally on the left and right sides of the seat block 352 and arranged concentrically, the ends of the two pin shafts 353 are rotatably connected in the two side plates 351, the end of the traction arm 354 is fixed on one of the pin shafts 353, the shell of the swing cylinder 355 is rotatably connected on one of the side plates 351 and located rearward of the traction arm 354, and the telescopic end of the swing cylinder 355 is arranged forward and rotatably connected on the end of the traction arm 354.

[0033] The bottom of the pressing plate 33 is also fixed with at least two pressure sensors 3513 distributed in sequence from left to right, the number of the pressure sensors 3513 is equal to the number of the pressing modules, and the sensing end of each pressure sensor 3513 is vertically downward and cooperates with the upper end of the pressing shaft 3510 in the corresponding pressing module.

[0034] The swing mechanism further includes a fixed block 3515 fixed on the bottom of the pressing plate 33 and located above the seat block 352, a movable block 3514 fixed on the upper side of the seat block 352, a limiting head 3516 fixed on the movable block 3514, and a limiting column 3517 fixed on the fixed block 3515 and cooperating with the limiting head 3516.

[0035] The pressing head includes a base 356 fixed on the lower end of the pressing shaft 3510, a base seat 357 concentrically fixed on the end of the base 356, a clamping seat 358 concentrically embedded on the end of the base seat 357, and a pressing ring cover 359 concentrically fixed on the end of the clamping seat 358.

[0036] The top center of the positioning seat 42 is provided with a counterbore 421, a plurality of opening grooves 422 are arranged in sequence in the circumferential direction on the inner wall of the counterbore 421, and a flexible positioning block 43 is embedded on the inner wall of the counterbore 421. The side wall of the flexible positioning block 43 towards the inside of the counterbore 421 further forms a clamping strip 431 outwardly, and the end of the clamping strip 431 extends into the inside of the counterbore 421.

[0037] The bottom surface center of the counterbore 421 is also embedded with concentrically distributed shaft sleeves 44.

[0038] The top of the moving seat 41 is also fixed with a vertically arranged calibration sleeve 8. Correspondingly, the bottom of the pressing plate 33 is also fixed with a vertically arranged stop column 9 located directly above the calibration sleeve 8, and the end of the stop column 9 further forms a vertically arranged calibration column 91 which is concentrically distributed with the calibration sleeve 8.

[0039] The limiting block 54 is provided with a limiting groove 541, and the swing rod 55 is inserted into the limiting groove 541, and the limiting groove 541 is used to limit the amplitude of the swing rod 55.

[0040] The top of the cabinet plate 2 is also fixed with a vertically arranged baffle 10 located behind the moving seat 41, and the baffle 10 is also inserted with a transversely arranged screw rod 11, and the front end of the screw rod 11 cooperates with the rear side outer wall of the moving seat 41.

[0041] Working principle:

[0042] According to the number of positioning seats 42, the same number of motor shafts 6 is taken, and the iron core on each motor rotor 6 is vertically inserted into the counterbore 421. The outer circumferential surface of the iron core extrudes the end of the clamping strip 431 out of the counterbore 421, and the end of the clamping strip 431 is pressed against the outer circumferential surface of the iron core by its own elasticity, thereby completing the fixation of the iron core of the motor shaft 6. One end of the shaft of the motor shaft 6 is inserted into the shaft sleeve 44 downward, and the other end of the shaft of the motor shaft 6 protrudes above the positioning seat 42.

[0043] The extension end of the swing cylinder 355 in the driving swing mechanism is driven to extend outward to drive the corresponding pin shaft 353 to rotate through the traction arm 354, thereby driving each compression assembly to rotate forward through the seat block 352, so that each compression head in each compression assembly is arranged forward. Then, each commutator 7 is inserted into the compression ring cover 359 in each compression head.

[0044] The extension end of the swing cylinder 355 is driven to retract inward, so as to drive each compression assembly to rotate backward in the same way until the end of the limiting head 3516 on the moving block 3514 abuts against the end of the limiting column 3517 on the fixed block 3515. At this time, each compression head is vertically arranged downward. Then, the extension end of the lifting cylinder 34 in the compression assembly 3 is driven to extend outward to drive the pressing plate 33 to move downward through the traction plate 32 and the two guide columns 31, thereby driving the compression unit 35 to move downward.

[0045] At the same time, the downward movement of the pressing plate 33 drives the guide plate 52 in the transmission assembly 5 to move downward, thereby making the roller 58 move upward into the guide groove 521 from the turning groove 522 in the guide plate 52, thereby driving the upper end of the swing arm 53 to swing forward, so as to drive the upper end of the swing rod 55 to swing backward and stretch the return spring 57 through the lower end of the swing arm 53, thereby driving the moving seat 41 to move backward through the lower end of the swing rod 55 and the connecting rod 56, thereby driving each positioning seat 42 and each motor shaft 6 in the positioning seat 42 to move backward. Until the rear outer wall of the moving seat 41 is blocked by the front end of the screw 11 in the baffle 10, at this time, each motor shaft 6 is located directly below the corresponding compression head.

[0046] The extension end of the lifting cylinder 34 is continuously driven to extend outward to drive each compression head to continue to move downward, and the relative position between the pressing plate 33 and the moving seat 41 can remain unchanged and achieve accurate alignment after the end of the calibration column 91 is inserted into the calibration sleeve 8. Then, the continuous downward movement of each compression head makes each commutator 7 be sleeved on the upper end of the shaft of the motor shaft 6. The upper end of the shaft of the motor shaft 6 will pass through the compression ring cover 359, the clamping seat 358 and the base 357 in turn, until each commutator 7 is compressed to the specified position.

[0047] The reaction force received by the commutator 7 during the pressing process can push the pressing shaft 3510 to move upward and compress the pressing spring 3511 to achieve flexible pressing, and when the upper end of each pressing shaft 3510 is in contact with the sensing end of a corresponding pressure sensor 3513, each pressure sensor 3513 can measure the pressure from the pressing shaft 3510 in real time, and if the pressure value exceeds the limit, the extension end of the lifting cylinder 34 will be automatically stopped to continue to extend outward to play an effective protection role.

[0048] After the pressing is completed, the extension end of the lifting cylinder 34 is driven to retract inward to drive each pressing head to move upward, and the guide plate 52 is also driven to move upward, and when the roller 58 enters the turning groove 522, the roller 58 drives the upper end of the swing arm 53 to swing backward, and the lower end of the swing arm 53 drives the upper end of the swing rod 55 to swing forward, and the rebound force of the reset spring 57 drives the upper end of the swing rod 55 to swing reversely to reset and drive the moving seat 41 to move forward through the connecting rod 56, and each positioning seat 42 and the motor shaft 6 in each positioning seat 42 are driven to move forward, until the roller 58 reaches the end of the turning groove 522, and then each motor shaft 6 with the commutator 7 is taken out upward.

[0049] The utility model discloses can press at least two annular commutators simultaneously, and then improve the processing efficiency, and simultaneously, still can with the transmission assembly 5 synchronously convert the process that the pressing plate 33 moves up and down into the front -and -back movement process of the material loading assembly 4, so that can move the material loading assembly 4 to the operator place at close range when taking and placing the motor rotor, in addition, still can with swing mechanism realize the front -and -back rotation of each pressing head, and then can make each pressing head be in the direction of facing forward when placing annular commutator, so that can make the operator directly observe each pressing head to find the position quickly, so that make the operator can take and place the motor rotor and place annular commutator more easily, and then facilitate use.

[0050] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the utility model, and not to limit them; although the utility model has been described in detail with reference to the foregoing examples, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for some technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A rotor press-fitting machine of a small motor, comprising a cabinet, a cabinet plate fixed transversely on the top of the cabinet, a press-fitting assembly arranged between the cabinet plate and the cabinet, and a material loading assembly arranged on the top of the cabinet plate and cooperating with the press-fitting assembly, characterized in that: the press-fitting assembly comprises a lifting cylinder arranged at the bottom of the cabinet plate, a traction plate fixed transversely on the telescopic end of the lifting cylinder, two guide columns vertically and movably connected in the cabinet plate and symmetrically arranged on the left and right sides of the lifting cylinder, a pressing plate fixed transversely between the two guide columns and above the cabinet plate, and a press-fitting unit arranged at the bottom of the pressing plate, the telescopic end of the lifting cylinder is arranged vertically downward, and the lower ends of the two guide columns are fixed on the traction plate; the material loading assembly comprises a moving seat movably connected on the top of the cabinet plate to have a forward and backward translation function, and at least two positioning seats fixed on the top of the moving seat and arranged in sequence from left to right; further comprising a transmission assembly arranged between the pressing plate and the moving seat, the transmission assembly comprises a side frame fixed on the top of the cabinet plate, a guide plate vertically and movably connected on the side frame to have an up and down vertical movement function, a swing arm rotatably connected on the side frame and located between the side frame and the guide plate, a limiting block fixed on the side frame and located below the swing arm, a swing rod movably inserted in the limiting block, a connecting rod rotatably connected on the lower end of the swing rod, and a return spring fixed between the root of the connecting rod and the lower end of the swing rod, the upper side of the guide plate is fixed on the bottom of the pressing plate, the upper end of the swing arm is movably connected on the guide plate, the upper end of the swing rod is rotatably connected on the lower end of the swing arm, and the end of the connecting rod is rotatably connected on the rear side of the moving seat; the press-fitting unit comprises two side plates vertically fixed on the bottom of the pressing plate and symmetrically arranged on the left and right sides, a seat block arranged between the two side plates, and at least two press-fitting modules arranged on the seat block and distributed in sequence from left to right, the number of the press-fitting modules is equal to the number of the positioning seats, and each press-fitting module is arranged directly above a corresponding positioning seat; the press-fitting module comprises a press-fitting shaft movably inserted in the seat block, a press-fitting head concentrically fixed on the lower end of the press-fitting shaft, a retaining ring fixedly sleeved on the upper end of the press-fitting shaft and located above the seat block, and a press-fitting spring sleeved on the press-fitting shaft and located between the press-fitting head and the seat block, the press-fitting spring is always in a compressed state to make the press-fitting shaft always have a downward movement reset tendency; the guide plate is provided with vertically distributed guide grooves, the lower end of the guide groove is formed with a turning groove downward and rearward, the upper end of the swing arm is further connected with a rotatable roller, and the roller is rollingly embedded in the guide groove or the turning groove; further comprising a swing mechanism arranged between the seat block and the two side plates, the swing mechanism comprises a pin shaft, a traction arm and a swing cylinder, the pin shaft comprises two pin shafts, the two pin shafts are fixed transversely on the left and right sides of the seat block and concentrically arranged, the ends of the two pin shafts are rotatably inserted in the two side plates, the end of one of the pin shafts is fixed with the traction arm, the outer shell of the swing cylinder is rotatably connected on one of the side plates and located rearward of the traction arm, the telescopic end of the swing cylinder is arranged forward and rotatably connected on the end of the traction arm. ​ ​ ​ 2. A rotor press fitting machine for small electric machines according to claim 1, characterized in that, ​ 3. A rotor press fitting machine for small electric machines according to claim 2, characterized in that, ​ 4. The rotor press fitting machine of a small motor according to claim 1, wherein ​ 5. The rotor press fitting machine of a small motor according to claim 2, wherein ​ 6. The rotor press fitting machine of a small motor according to claim 2, wherein The bottom of the pressing plate is also fixed with at least two pressure sensors distributed in sequence from left to right, the number of the pressure sensors is equal to the number of the pressing modules, and the sensing end of each pressure sensor is vertically downward and cooperates with the upper end of the pressing shaft in the corresponding pressing module.

7. A rotor press fitting machine for small electric machines according to claim 5, characterized in that, The swing mechanism further comprises a fixed block fixed on the bottom of the pressing plate and located above the seat block, a moving block fixed on the upper side of the seat block, a limiting head fixed on the moving block, and a limiting column fixed on the fixed block and cooperated with the limiting head.

8. The rotor press fitting machine of a small motor according to claim 1, wherein The top center of the positioning seat is provided with a counterbore, a plurality of opening grooves are arranged on the inner wall of the counterbore in the circumferential direction, a flexible positioning block is embedded on the inner wall of the counterbore, a clamping strip is formed on the side wall of the flexible positioning block towards the inside of the counterbore, and the end of the clamping strip extends into the inside of the counterbore; and the bottom center of the counterbore is also embedded with concentrically distributed shaft sleeves.

9. The rotor press fitting machine of a small motor according to claim 1, wherein The top of the moving seat is also fixed with a vertically arranged calibration sleeve, and correspondingly, the bottom of the pressing plate is also fixed with a vertically arranged blocking column located directly above the calibration sleeve, and the end of the blocking column is also formed with a vertically arranged calibration column which is concentrically distributed with the calibration sleeve.

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