Automatic press-fitting device for motor end cover and press-fitting method thereof

Abstract

The present application relates to motor press equipment technical field, specifically to a kind of automatic press equipment of motor end cover, including base, base is sequentially provided with jacking mechanism, limiting mechanism, press equipment and driving mechanism from bottom to top, by the motor end cover to be press-fitted by limiting mechanism, by jacking mechanism the motor end cover on limiting mechanism is jacked up, by driving press equipment downward movement by driving mechanism, by press equipment downward the motor end cover is press-fitted to motor stator, press equipment includes transmission pressure unit, press unit at the lower end of transmission pressure unit, locking unit connecting transmission pressure unit and press unit, press unit includes press plate and multiple press rods, transmission pressure unit includes transmission pressure plate, locking unit includes locking driving part, locking buckle and locking pin.The present application also provides a kind of motor end cover press method.The present application can make motor end cover and motor stator realize accurate positioning, and can realize the automatic assembly of electronic end cover.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of motor press-fitting equipment, and particularly provides an automatic press-fitting device for a motor end cover and a press-fitting method thereof. BACKGROUND

[0002] The motor end cover is a cover body installed on the motor shell to form a closed space inside the motor. At present, the assembly between the medium-large motor end cover and the stator frame generally adopts a stop opening plus a transition fit or a small interference fit. During assembly, a manual assembly method is used, a guide rod is used for angular positioning of the end, and after the end cover stop opening enters the frame, the self-weight cannot overcome the interference, and then a bolt tensioning method is used to assemble the end cover in place. The specific operation method is as follows: the stator frame is placed on the workbench in advance, the guide rod is screwed into the threaded hole in the stator end face, then the end cover is manually carried or hoisted to the vicinity of the stator frame assembly surface, the angular position is adjusted, the guide rod is inserted through the corresponding assembly hole of the end cover, then the end cover is assembled on the stator frame, the end cover and the stator end face hole are aligned by visual observation, then the wrench is used to cooperate with the process bolt to tension the end cover to the stator end face.

[0003] The above-mentioned traditional operation method depends on the skills of employees, requires a very slow operation process and careful observation to ensure that the end cover and the stator end face hole are aligned correctly, and at the same time, the process bolt tensioning method for the end cover and the stator is difficult to realize automatic assembly. In recent years, with the rapid development of intelligent manufacturing technology, the main manufacturing lines of traction motors have gradually been transformed and upgraded to automatic and intelligent operation. Motor assembly is the most core and important assembly process of traction motors, and the assembly operation mode upgrade is the focus of the current motor manufacturing industry transformation. The above-mentioned end cover assembly method obviously cannot meet the requirements of automatic assembly. In order to solve the above-mentioned problems, the following patents related to the automatic press-fitting of the motor end cover are disclosed in the prior art:

[0004] 1. Patent No. 202311269908.8, Patent Name: Motor End Cover Press-Fitting Device, comprising a workbench and a abutting groove opened on the side wall of the workbench for sliding and abutting the end cover body, a feeding assembly is arranged on one side of the workbench for transporting a single end cover body into the abutting groove, a press-fitting opening is arranged through the workbench for connecting the abutting groove, a fixing assembly is arranged at the bottom of the workbench for fixing the motor body, and a press-fitting assembly is arranged on the workbench for press-fitting the end cover body.

[0005] 2. The invention patent application with the patent number "202211545021.2" and the patent name "Vertical flexible full-automatic press-fitting device for motor stator frame and rear end cover" includes a device body, an automatic assembly line is arranged in the device body, the two ends of the automatic assembly line pass through the device body, a robot is arranged on one end of the automatic assembly line, a product tray carrier is arranged at the upper end of the automatic assembly line, a jacking unloading mechanism is arranged in the device body, a stator frame positioning and transplanting mechanism is arranged at the left end of the device body, and a Z-axis press-fitting mechanism is arranged at the upper end of the device body.

[0006] The above-mentioned prior art can solve the problem that the assembly of the existing motor stator frame and end cover needs manual material taking and placing, can improve the press-fitting efficiency of the motor end cover, save human resources, and avoid the problem of injury during the carrying process of workers. However, the structure in the prior art is complex, it is difficult to ensure the positioning accuracy of the end cover during press-fitting, and it is difficult to ensure the press-fitting efficiency and quality. Therefore, how to design an end cover press-fitting device that can realize accurate positioning of the end cover and the stator frame and realize efficient automatic press-fitting of the motor end cover and the motor stator is a problem that needs to be solved at present. SUMMARY

[0007] The present application provides an automatic press-fitting device for a motor end cover and a press-fitting method thereof, which can improve the press-fitting efficiency and accuracy of the motor end cover and realize automatic press-fitting of the motor end cover and the motor stator.

[0008] The automatic press-fitting device for a motor end cover provided by the present application specifically includes a base, and a jacking mechanism, a limiting mechanism, a press-fitting mechanism and a driving mechanism are sequentially arranged on the base from bottom to top; the motor end cover to be press-fitted is accommodated by the limiting mechanism, the motor end cover on the limiting mechanism is jacked up by the jacking mechanism, the press-fitting mechanism is driven by the driving mechanism to move downward, and the motor end cover is press-fitted onto the motor stator by the press-fitting mechanism; the press-fitting mechanism includes a pressure transmission unit, a press-fitting unit at the lower end of the pressure transmission unit, and a locking unit connecting the pressure transmission unit and the press-fitting unit, and the press-fitting unit includes a plurality of press-fitting rods.

[0009] Further, the press-fitting rods include fixed rods and telescopic rods; the plurality of press-fitting rods form a plurality of press-fitting rod groups matched with different specifications of motor end covers, and each group of press-fitting rod groups is sequentially distributed in a circular shape from outside to inside, each group of press-fitting rod groups is composed of fixed rods, or composed of telescopic rods, or composed of fixed rods and telescopic rods.

[0010] Further, the height of the press-fitting rods in each group of press-fitting rods gradually decreases from outside to inside, that is, the height of the press-fitting rods in the outermost circle of press-fitting rod groups is the highest, and the height of the press-fitting rods in the innermost circle of press-fitting rod groups is the lowest; the bottom end of at least one press-fitting rod in each circle of press-fitting rod groups is provided with a spring pin, and the spring pin is inserted into the positioning hole of the motor end cover during the press-fitting process to position and press.

[0011] Further, the press-fit rods in the outermost circle of the press-fit rod group are fixed rods; the press-fit rods in the innermost circle of the press-fit rod group and the press-fit rods between the outermost circle of the press-fit rod group and the innermost circle of the press-fit rod group can be fixed rods or telescopic rods, and the positions of the fixed rods and the telescopic rods are matched with the shapes of the upper planes of the various motor end covers to be press-fit.

[0012] Further, the press-fit unit further comprises a press-fit plate, and the press-fit rods are connected to the lower end of the press-fit plate; the pressure transmission unit comprises a pressure transmission plate connected to the upper end of the press-fit plate, and a locking hole one is formed in the pressure transmission plate; the press-fit plate is provided with a locking groove in communication with the locking hole one; the locking unit comprises a locking driving member located at the upper end of the pressure transmission plate and a locking buckle located below the press-fit plate; the power transmission rod of the locking driving member is arranged in the locking hole one and the locking groove and connected with the locking buckle; the locking buckle is rotatable and abuts against the lower end surface of the press-fit plate to buckle the pressure transmission plate and the press-fit plate.

[0013] Further, the locking unit further comprises a locking pin connected to the lower end of the pressure transmission plate and located inside the locking driving member, and a locking hole two is formed in the press-fit plate and matched with the locking pin.

[0014] Further, the limiting mechanism comprises a positioning plate for initial positioning of the motor end cover to be press-fit; a plurality of positioning platforms and positioning pins are arranged on the upper end of the positioning plate; the motor end cover is centered by the positioning platforms; and the motor end cover is oriented by the cooperation of the positioning platforms and the positioning pins; the positioning platforms comprise a plurality of height-different limiting steps to match the positioning requirements of motor end covers of different specifications.

[0015] Further, the positions of the various positioning pins are matched with the positioning requirements of motor end covers of different specifications to be press-fit, and the plurality of positioning pins are arranged in a ring shape and the centers of the various positioning pins do not coincide; the upper end of each positioning pin is provided with a telescopic head, and when the motor end cover is positioned, the telescopic head extends into the positioning hole of the motor end cover for positioning; for the same motor end cover, the positioning hole of the motor end cover into which the corresponding telescopic head extends is the same as the positioning hole into which the corresponding spring pin extends.

[0016] Further, the base is sequentially provided, from bottom to top, with a frame one, a frame two and a frame three; the jacking mechanism is slidingly arranged on the frame one, and the positioning plate is slidingly arranged on the frame two; the driving mechanism is arranged on the frame one, and the power output rod of the driving mechanism passes through the frame one and is connected with the pressure transmission plate below the frame one.

[0017] A press-fitting method of a motor end cover, wherein the motor end cover is press-fitted by the automatic press-fitting device, and the method comprises the following steps:

[0018] S1: placing the motor end cover to be press-fit on the positioning plate, centering and orienting the motor end cover by the corresponding limiting steps and the positioning pins; and placing the motor stator at the jacking mechanism and placing the motor stator and the jacking mechanism at the same center;

[0019] S2: sliding the positioning plate on the second frame body, and sliding the positioned motor end cover to below the pressing mechanism;

[0020] S3: sliding the jacking mechanism on the first frame body to below the positioning plate, driving the jacking mechanism upward to jack up the motor end cover on the positioning plate, and moving the positioning plate away from below the motor end cover;

[0021] S4: starting the driving mechanism to apply downward driving force to the pressure transmission plate, driving the pressing plate and the pressing rod to move downward and press the motor end cover, until the motor end cover is pressed and assembled on the motor stator; while the driving mechanism applies downward pressing force, the jacking mechanism needs to maintain upward jacking force.

[0022] Compared with the prior art, the present application can achieve the following beneficial effects:

[0023] The pressing device and the pressing method in the present application can realize automatic pressing of the motor end cover, and can realize automatic and rapid model change of the pressing device through the design of the pressing rod and the pressing plate, so as to ensure the flexibility of the workstation to adapt to the automatic assembly of the motor end cover, improve the universality of the device, and save assembly cost and assembly time.

[0024] The pressing device and the pressing method in the present application can realize the assembly of the motor end cover in the angular direction and the center direction through the pressing rod, the pressing plate and the positioning plate, so as to improve the positioning precision between the motor end cover and the motor stator, and ensure the product quality. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is the overall structure schematic diagram of the pressing device provided according to the embodiment of the present application;

[0026] Figure 2 is the structure schematic diagram of the driving mechanism and the pressing mechanism provided according to the embodiment of the present application;

[0027] Figure 3 is the structure schematic diagram of the pressing unit provided according to the embodiment of the present application;

[0028] Figure 4 is the structure schematic diagram of the pressure transmission unit and the locking unit provided according to the embodiment of the present application;

[0029] Figure 5 is the structure schematic diagram of the limiting mechanism provided according to the embodiment of the present application.

[0030] The reference numerals in the attached drawings include: base 1, lifting mechanism 2, limiting mechanism 3, pressing mechanism 4, driving mechanism 5, pressing rod 6, fixing rod 7, telescopic rod 8, spring pin 9, outermost pressing rod group 10, pressing plate 11, pressure transmission plate 12, locking groove 13, locking buckle 14, locking pin 15, locking hole 2 16, positioning plate 17, positioning platform 18, limiting step 19, positioning pin 20, telescopic head 21, frame 1 22, frame 2 23, frame 3 24, locking drive component 25, stop 26, U-shaped groove 27. Detailed Implementation

[0031] The appendix will be referenced below. Figures 1-5 Embodiments of the present invention are described below. In the following description, the same modules are denoted by the same reference numerals. Where the same reference numerals are used, their names and functions are also the same. Therefore, their detailed description will not be repeated.

[0032] To make the objectives, technical solutions, and advantages of this invention clearer, the following description is provided in conjunction with the appendix. Figures 1-5 The present invention will be further described in detail below with reference to specific embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and do not constitute a limitation thereof.

[0033] An automatic pressing device for motor end caps includes a base 1, such as... Figure 1 As shown, from bottom to top, the base 1 is provided with a lifting mechanism 2, a limiting mechanism 3, a pressing mechanism 4, and a driving mechanism 5. The limiting mechanism 3 is used to accommodate the motor end cover to be pressed, the lifting mechanism 2 is used to lift the motor end cover on the limiting mechanism 3, the driving mechanism 5 is used to drive the pressing mechanism 4 to move downward, and the pressing mechanism 4 is used to press the motor end cover onto the motor stator downward. Above the base 1, from bottom to top, are provided a frame 1 22, a frame 23, and a frame 3 24. The lifting mechanism 2 is slidably mounted on the frame 1 22, the positioning plate 17 is slidably mounted on the frame 2 23, and the driving mechanism 5 is mounted on the frame 1 22.

[0034] like Figure 2 , Figure 3 As shown, the pressing mechanism 4 includes a pressure transmitting unit, a pressing unit located at the lower end of the pressure transmitting unit, and a locking unit connecting the pressure transmitting unit and the pressing unit. The pressing unit includes multiple pressing rods 6 and a pressing plate 11. The pressing rods 6 are connected to the lower end of the pressing plate 11. The pressing rods 6 include fixed rods 7 and telescopic rods 8. Multiple pressing rods 6 form multiple sets of pressing rod groups to match motor end caps of different specifications. Each set of pressing rod groups is arranged in a ring shape from the outside to the inside. Each set of pressing rod groups is composed of fixed rods 7, or telescopic rods 8, or a combination of fixed rods 7 and telescopic rods 8.

[0035] The height of the press-fitting rods 6 in each press-fitting rod group gradually decreases from the outside to the inside, that is, the height of the press-fitting rods 6 in the outermost press-fitting rod group 10 is the highest, and the height of the press-fitting rods 6 in the innermost press-fitting rod group is the lowest. The outer diameter of the electronic end cover of the innermost press-fitting rod group is greater than the overall outer diameter of the press-fitting rod group of the outermost press-fitting rod group, that is, the electronic end cover of the innermost press-fitting rod group can be accommodated in the press-fitting rod group of the outermost press-fitting rod group without interference. At least one bottom end of the press-fitting rods 6 in each press-fitting rod group is provided with a spring pin 9. During the press-fitting process, the spring pin 9 extends into the positioning hole of the motor end cover for press-fitting positioning. When the motor end cover is press-fitted in place, the spring pin 9 will exit from the positioning hole of the motor end cover.

[0036] The press-fitting rods 6 in the outermost press-fitting rod group 10 are all in the form of fixed rods 7 to match the press-fitting requirements of the motor end cover with a larger outer diameter. The press-fitting rods 6 in the innermost press-fitting rod group, the press-fitting rods 6 in the press-fitting rod group between the outermost press-fitting rod group 10 and the innermost press-fitting rod group can be in the form of fixed rods 7 or telescopic rods 8. The positions of the fixed rods 7 and the telescopic rods 8 are matched with the upper plane shape of each motor end cover to be press-fitted and are set accordingly.

[0037] In specific applications, the optimal implementation is to set each press-fitting rod group to correspond to one motor end cover. The heights of the press-fitting rods in each press-fitting rod group remain consistent. If the press-fitting rod group simultaneously includes fixed rods 7 and telescopic rods 8, the height of the telescopic rods 8 after extension remains consistent with the fixed rods 7. However, in order to match some special-shaped motor end covers, fixed rods 7 or telescopic rods 8 can be set in different press-fitting rod groups to match the press-fitting requirements of the special-shaped motor end cover. Those skilled in the art can adaptively design according to the actual shape of the motor end cover.

[0038] As Figure 3 , Figure 4As shown, the pressure transmission unit includes a pressure transmission plate 12 connected to the upper end of the press plate 11, and the power output rod of the driving mechanism 5 passes through the frame body 22 and is connected to the pressure transmission plate 12 below the frame body 22, and the pressure transmission plate 12 transmits the pressing power of the driving motor to the pressing unit. A locking hole 1 is formed in the upper end of the pressure transmission plate 12, and a locking groove 13 is formed in the press plate 11 and communicates with the locking hole 1. The locking unit includes a locking driving member 25 located at the upper end of the pressure transmission plate 12 and a locking buckle 14 located below the press plate 11. The power transmission rod of the locking driving member 25 passes through the locking hole 1 and the locking groove 13 and is connected to the locking buckle 14. The locking buckle 14 can rotate and abut against the lower end surface of the press plate 11 to tighten the pressure transmission plate 12 and the press plate 11. The locking groove 13 can accommodate the power output rod of the locking driving member 25 to prevent interference, and can make the locking buckle 14 and the press plate 11 have a larger contact area, thereby improving the locking force. The locking unit further includes a locking pin 15 connected to the lower end of the pressure transmission plate 12 and located inside the locking driving member 25. A locking hole 2 16 is formed in the press plate 11 and matches the locking pin 15. The stability of the connection between the press plate 11 and the pressure transmission plate 12 is further improved by the locking pin 15.

[0039] As shown in Figure 5 The limiting mechanism 3 includes a positioning plate 17 for initial positioning of the motor end cover to be pressed. The positioning plate 17 is used to position the motor end cover in a circle and in an angular direction. A U-shaped groove 27 is formed in the positioning plate 17 to allow the power output head of the jacking mechanism 2 to pass through and jack up the motor end cover. The upper end of the positioning plate 17 is provided with a plurality of positioning platforms 18 and positioning pins 20. The positioning platforms 18 are used to position the motor end cover in a circle, and the positioning platforms 18 and the positioning pins 20 are used to position the motor end cover in an angular direction. The positioning platforms 18 include a plurality of height-limiting steps 19 to match the positioning requirements of motor end covers of different specifications.

[0040] The positions of the positioning pins 20 are matched with the positioning requirements of motor end covers of different specifications and are set accordingly. The plurality of positioning pins 20 are arranged in a ring shape and the centers of the positioning pins 20 do not coincide. Each positioning pin 20 is matched with one type of motor end cover. The upper end of each positioning pin 20 is provided with a telescopic head 21. When positioning the motor end cover, the telescopic head 21 is inserted into the positioning hole of the motor end cover for positioning. For the same motor end cover, the positioning hole of the motor end cover into which the corresponding telescopic head 21 is inserted is the same as the positioning hole into which the corresponding spring pin 9 is inserted.

[0041] A method for pressing a motor end cover, the motor end cover is pressed by the automatic pressing device of claim 9, comprising the following steps:

[0042] S1: the motor end cover to be pressed is placed on the positioning plate 17, the motor end cover is positioned at the center and the angle by the corresponding limiting step 19 and the positioning pin 20, and the corresponding limiting step 19 is selected according to the outer diameter of the motor end cover. The motor stator is placed at the jacking mechanism 2 and placed with the jacking mechanism 2 at the center, and the motor stator is placed at the position shown in A in FIG. 2, and the motor stator is not moved when the jacking mechanism 2 jacks up the motor end cover. Figure 1

[0043] S2: slide the positioning plate 17 on the frame body two 23, and slide the positioned motor end cover to the lower side of the pressing mechanism 4.

[0044] S3: slide the jacking mechanism 2 to the lower side of the positioning plate 17 on the frame body one 22 (the state before the jacking mechanism 2 is slid to the lower side of the positioning plate 17), drive the jacking mechanism 2 to jack up the motor end cover on the positioning plate 17, and the motor end cover is jacked up by the power output head of the jacking mechanism 2 shown in B through the U-shaped groove 27 of the positioning plate 17, and then the positioning plate 17 is removed from the lower side of the motor end cover. Figure 1

[0045] S4: start the driving mechanism 5 to apply a downward driving force to the transmission plate 12, drive the pressing plate 11 and the pressing rod 6 to move downward and press the motor end cover, until the pressing rod 6 presses the motor end cover and presses the motor end cover to the motor stator, and at the same time the driving mechanism 5 applies the pressing force downward, the jacking mechanism 2 needs to keep the jacking force upward, and in the pressing process, the driving force of the driving mechanism 5 is getting bigger and bigger, and the jacking force of the jacking mechanism 2 is getting smaller and smaller, but the driving force of the driving mechanism 5 and the jacking force of the jacking mechanism 2 need to be kept at the same time.

[0046] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

[0047] The specific embodiments of the present application do not constitute a limitation on the scope of protection of the present application. Any other corresponding changes and modifications made according to the technical concept of the present application should be included in the protection scope of the claims of the present application.​​

Claims

1. An automatic press fitting device of a motor end cover, characterized by, The application relates to a motor end cover pressing device, which comprises a base (1), wherein a jacking mechanism (2), a limiting mechanism (3), a pressing mechanism (4) and a driving mechanism (5) are sequentially arranged on the base (1) from bottom to top; the motor end cover to be pressed is accommodated by the limiting mechanism (3), the motor end cover on the limiting mechanism (3) is jacked by the jacking mechanism (2), the pressing mechanism (4) is driven by the driving mechanism (5) to move downwards, and the motor end cover is pressed downwards by the pressing mechanism (4) and is pressed onto a motor stator; the pressing mechanism (4) comprises a pressure transmission unit, a pressing unit at the lower end of the pressure transmission unit and a locking unit connecting the pressure transmission unit and the pressing unit; the pressing unit comprises a plurality of pressing rods (6); the pressing rod (6) comprises a fixed rod (7) and a telescopic rod (8); the plurality of pressing rods (6) form a plurality of groups of pressing rod groups matched with motor end covers of different specifications; each group of pressing rod groups is distributed in a ring shape from outside to inside; each group of pressing rod groups is composed of the fixed rod (7), the telescopic rod (8) or the fixed rod (7) and the telescopic rod (8); the height of the pressing rod (6) in each group of pressing rod groups gradually decreases from outside to inside, that is, the height of the pressing rod (6) in the outermost group of pressing rod groups (10) is the highest, and the height of the pressing rod (6) in the innermost group of pressing rod groups is the lowest; the bottom end of at least one pressing rod (6) in each group of pressing rod groups is provided with a spring pin (9) which is inserted into a positioning hole in the motor end cover during the pressing process; the pressing rod (6) in the outermost group of pressing rod groups (10) is in the form of the fixed rod (7); the pressing rod (6) in the innermost group of pressing rod groups, the pressing rod (6) in the group of pressing rod groups between the outermost group of pressing rod groups (10) and the innermost group of pressing rod groups can be in the form of the fixed rod (7) or the telescopic rod (8); the positions of the fixed rod (7) and the telescopic rod (8) are matched with the upper plane shape of each motor end cover to be pressed and are correspondingly arranged; the pressing unit further comprises a pressing plate (11), and the pressing rod (6) is connected to the lower end of the pressing plate (11); the pressure transmission unit comprises a pressure transmission plate (12) connected to the upper end of the pressing plate (11), the pressure transmission plate (12) is provided with a locking hole one, and the pressing plate (11) is provided with a locking groove (13) in communication with the locking hole one; the locking unit comprises a locking driving element (25) at the upper end of the pressure transmission plate (12) and a locking buckle (14) below the pressing plate (11); the power transmission rod of the locking driving element (25) is arranged in the locking hole one and the locking groove (13) and is connected with the locking buckle (14); the locking buckle (14) is rotatable and abuts against the lower end surface of the pressing plate (11) to buckle the pressure transmission plate (12) and the pressing plate (11); the locking unit further comprises a locking pin (15) connected to the lower end of the pressure transmission plate (12) and located on the inner side of the locking driving element (25); the pressing plate (11) is provided with a locking hole two (16) matched with the locking pin (15); the limiting mechanism (3) comprises a positioning plate (17) for initially positioning the motor end cover to be pressed.The positioning plate (17) is provided with a plurality of positioning tables (18) and positioning pins (20) at the upper end, the motor end cover is centered by the positioning tables (18), and the motor end cover is angularly positioned by the cooperation of the positioning tables (18) and the positioning pins (20); the positioning table (18) comprises a plurality of height-limiting steps (19) that are different in height to match the positioning requirements of motor end covers of different specifications; the positions of the positioning pins (20) are set correspondingly to match the positioning requirements of motor end covers of different specifications, the plurality of positioning pins (20) are distributed in a ring shape, and the centers of the positioning pins (20) do not coincide; the upper end of each positioning pin (20) is provided with a telescopic head (21), when the motor end cover is positioned, the telescopic head (21) is inserted into the positioning hole of the motor end cover to position; for the same motor end cover, the positioning hole of the motor end cover into which the corresponding telescopic head (21) is inserted is the same as the positioning hole into which the corresponding spring pin (9) is inserted.

2. The automatic press fitting device of the motor end cover according to claim 1, characterized in that, The base (1) is sequentially provided with a frame body one (22), a frame body two (23) and a frame body three (24) from bottom to top; the jacking mechanism (2) is slidingly arranged on the frame body one (22), and the positioning plate (17) is slidingly arranged on the frame body two (23); the driving mechanism (5) is arranged on the frame body one (22), and a power output rod of the driving mechanism (5) penetrates through the frame body one (22) and is connected with the pressure transmission plate (12) below the frame body one (22).

3. A method of press fitting a motor end shield by the automatic press fitting apparatus of claim 2, wherein The method comprises the following steps: S1: placing the motor end cover to be pressed and mounted on the positioning plate (17), and positioning the motor end cover by the corresponding limiting step (19) and the positioning pin (20); placing the motor stator at the jacking mechanism (2) and placing the motor stator and the jacking mechanism (2) with the same center; S2: sliding the positioning plate (17) on the frame body two (23), and sliding the positioned motor end cover to below the pressing and mounting mechanism (4); S3: sliding the jacking mechanism (2) to below the positioning plate (17) on the frame body one (22), driving the jacking mechanism (2) to upwardly jack up the motor end cover on the positioning plate (17), and moving the positioning plate (17) away from below the motor end cover; S4: starting the driving mechanism (5) to apply downward driving force to the pressure transmission plate (12), driving the pressing plate (11) and the pressing rod (6) to move downward and press the motor end cover, until the motor end cover is pressed and mounted on the motor stator; while the driving mechanism (5) applies downward pressing force, the jacking mechanism (2) needs to keep upward jacking force.

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