CN111555575A - Motor casing end rolling forming device and motor - Google Patents

Abstract

The invention provides a roll forming device for the end of a motor casing and a motor. The device includes a rolling mechanism for rolling the edge of the end of the motor casing and a casing drive for driving the motor casing to rotate. The rolling mechanism and the casing driving mechanism are arranged perpendicular to each other; the rolling mechanism includes a rolling component, a position adjustment component and a first driving component, and the casing driving mechanism includes a limiting component for limiting the motor casing and a The second drive assembly is used to drive the motor casing to rotate. During the rolling operation, the second drive assembly drives the first limiting member to drive the motor casing to rotate in the axial direction. At the same time, the hob of the rolling member is in the first position. The end edge of the motor casing is rolled under the driving of the driving assembly, and the rolling operation is completed after the limiting assembly drives the motor casing to rotate for one cycle. The invention can ensure the concentricity between the casing and the end cover, and at the same time ensure that the joints between the casing and the end cover are uniformly stressed.

Description

Motor case end roll forming device and motor

technical field

The invention relates to a motor casing processing device, in particular to a roll forming device for the end of a motor casing and a motor with a folded edge bent inward at the open end of the casing.

Background technique

The outer casing of the motor is generally composed of a casing and an end cover. Generally, the long screw, nut and spring washer are used to connect and cooperate between the casing and the end cover. When this assembly structure is operated, it is necessary to The screws pass through the front and rear covers and the casing. During the assembly process, it is necessary to repeatedly adjust the positions of the screw holes of the front and rear covers. The screws are easy to be skewed, and the concentricity between the casing and the end covers is poor.

Based on this, the Chinese Patent Publication No. CN208183572A discloses an assembly structure of a casing and an end cover. In the assembly structure, positioning between the casing and the end cover is performed by a positioning member arranged along the radial direction of the casing, However, it does not fundamentally solve the problems of repeatedly adjusting the positions of the screw holes of the front and rear end caps and the poor concentricity between the casing and the end caps during the assembly process;

The Chinese Patent Publication No. CN202395574U discloses an assembly structure of a motor end cover and a casing. In this structure, the outer edge of the end cover body is folded downward with a number of flanges, and the flanges are embedded in the cavity of the casing. The outer side of the casing is close to the end of the inner wall of the casing. This solution solves the problem of poor concentricity between the casing and the end cover to a certain extent. However, this structure requires an interference fit between the end cover and the casing. Both the casing and the end cover have high hardness, so there is a high requirement for the machining accuracy of the casing and the end cover, which inevitably increases the processing cost of the casing and the end cover.

SUMMARY OF THE INVENTION

In order to solve the above technical problems, the first object of the present invention is to provide a roll forming device for the end portion of the motor casing, which is used for rolling the open end of the motor casing to form an inwardly bent open end. In this way, the end cover only needs to be placed on the annular limit table on the inner wall of the casing before rolling, so that not only the concentricity between the casing and the end cover can be ensured, but also the casing and the end cover can be guaranteed. The force is evenly applied throughout the connection; it can also effectively simplify the assembly process of the casing and the end cover, and improve the efficiency of motor assembly.

The second object of the present invention is to provide a motor, the casing of which has a folded edge formed by rolling with the above-mentioned device.

Based on the above object, one aspect of the present invention provides a motor casing end roll forming device, comprising: a rolling mechanism for rolling the end edge of the motor casing and a rolling mechanism for driving the motor casing to rotate The casing driving mechanism is provided, and the rolling mechanism and the casing driving mechanism are arranged perpendicular to each other. When the rolling mechanism rolls the end edge of the motor casing, the casing driving mechanism drives the motor casing to rotate, thereby All the end edges of the motor casing are roll formed;

The rolling mechanism includes a rolling component, a position adjusting component and a first driving component, wherein:

One end of the rolling member is formed with a hob, one end of the hob is a cylinder, and the other end is a circular table, and the generatrix of the side wall of the circular table is an arc concave in the direction of the axis, and the arc is close to the end of the cylinder. The part of the hob is tangent to the side wall of the cylinder; during the rotation of the hob, the cylinder part of the hob rolls the end of the motor casing, so that the end of the motor casing is bent to form a new end face, so The side wall of the round table squeezes the end edge of the motor casing to prevent the end edge of the motor casing from bulging to the outside during the rolling process;

the position adjusting component is connected with the rolling part, and is used for adjusting the position of the rolling part so that the side wall of the hob is directly opposite to the edge of the motor casing;

The first driving assembly is pivotally connected with one end of the rolling member away from the hob, and is used for driving the rolling member to rotate;

The casing driving mechanism includes a limiting component for limiting the motor casing and a second driving component for driving the motor casing to rotate, wherein:

The limiting assembly includes a first limiting member, the first limiting member is a cylindrical structure, and the edge side wall of the open end is formed with a plurality of gaps extending along the generatrix direction of the sidewall, and the gaps limit the first limit. The opening end of the positioning member is divided into a plurality of arc-shaped petal-shaped structures. During the rolling operation, the first limiting member is sleeved outside the motor casing with interference, and the plurality of arc-shaped petal-shaped structures are fitted through interference fit. The generated radial elastic force embraces the side wall of the motor casing together, so that the motor casing and the circumferential direction of the first limiting member are relatively fixed;

The second drive assembly is used to drive the first limit member to rotate. During the rolling operation, the second drive assembly drives the first limit member to drive the motor casing to rotate in the axial direction. At the same time, the roller The hob of the pressing part rolls the edge of the end of the motor casing under the driving of the first driving assembly, and the rolling operation is completed after the limiting assembly drives the motor casing to rotate for one cycle.

Preferably, the outer wall of the arc-shaped petal-shaped structure is further formed with a raised portion extending along its circumferential direction, the raised portion is close to the side of the opening end of the first limiting member and is far from the opening end of the first limiting member. The sides are all gently sloped to increase the structural rigidity and elastic force of the arc-shaped petal structure.

Preferably, the limiting component further includes a second limiting component connected to the second driving component, the second limiting component is cylindrical and is sleeved outside the first limiting component, the first limiting component is A limiting member can slide along the axial direction of the second limiting member; when the first limiting member slides away from the second limiting member, the arc-shaped petal structure of the first limiting member can completely protrude from the second limiting member. Outside the second limit part, so that the motor casing can be assembled into the first limit part;

When the first limiting member slides in the opposite direction to the bottom of the second limiting member, the inner wall of the opening end of the second limiting member abuts against the side of the raised portion away from the opening end of the first limiting member, thereby increasing the arc shape The embracing force of the petal structure on the motor casing.

Preferably, the limiting assembly further includes a third limiting component, the third limiting component is disposed at the bottom of the first limiting component, and one end of the third limiting component close to the open end of the first limiting component is formed with the bottom of the motor casing. A recessed portion with a matching shape, when the motor housing is inserted into the first limiting member, the bottom of the motor housing is embedded in the recessed portion.

Preferably, the casing driving mechanism further includes a first lifting mechanism for driving the first limiting member away from or approaching the second limiting member, the first lifting mechanism passing through the second limiting member and the third limiting member The positioning part is then connected to the bottom of the first limiting part.

Preferably, the first lifting mechanism includes a lead screw.

Preferably, the device further includes an anti-shake mechanism and a second lifting mechanism that is connected to the anti-shake mechanism and drives the anti-shake mechanism to rise and fall. The anti-shake mechanism is arranged opposite to the casing driving mechanism. After it is inside a limit part, the lifting mechanism drives the anti-shake mechanism to move downward, so that the end of the anti-shake mechanism abuts on the motor end cover, so as to avoid the motor housing end face caused by the motor rotation jitter during the rolling operation. Rolling is uneven.

Preferably, the end of the anti-shake mechanism facing the drive mechanism of the casing is formed with a plurality of arc-shaped tabs for abutting on the motor end cover, and the arc-shaped tabs are evenly distributed at the end of the anti-shake mechanism.

Preferably, the second lifting mechanism includes a lifting cylinder.

In another aspect of the present invention, a motor is provided, including a casing, an end cover, a rotor and accessories, wherein the end cover is arranged at the open end of the casing, and together with the casing constitutes a container for accommodating the rotor and the accessories. A storage space, wherein the inner wall of the casing is recessed inward near the open end to form an annular limit platform for axially limiting the end cover;

The open end of the casing is bent inward to form a folded edge, the inner edge of the end cover abuts on the annular limiting platform, and the outer edge is wrapped in the folded edge of the open end of the casing, in particular, The folded edge of the casing is roll formed by the above-mentioned motor casing end roll forming device.

Compared with the prior art, the beneficial effects of the present invention are:

The purpose of connecting the end cover of the motor to the casing is mainly to protect the rotor and other parts inside the casing. Therefore, as long as the end cover will not be separated from the edge of the casing, and the strength of the connection between the two is even, the casing is based on this. The device is used to roll the open end of the motor casing, so that the open end forms a folded edge bent inward, so that the open end forms a folded edge bent inward. Before pressing, place the end cover on the annular limit table on the inner wall of the casing. In this way, it can not only ensure the concentricity between the casing and the end cover, but also ensure that the connection between the casing and the end cover is evenly stressed; it can also effectively simplify the The assembly process of the casing and the end cover improves the assembly efficiency of the motor.

Description of drawings

The accompanying drawings that constitute a part of the present application are used to provide further understanding of the present application, and the schematic embodiments and descriptions of the present application are used to explain the present application and do not constitute a limitation to the present application.

1 is a schematic diagram of the overall structure of the roll forming device for the end of the motor casing in the first embodiment of the present invention;

Fig. 2 is the longitudinal sectional view of Fig. 1;

3 is a schematic diagram of the overall structure of the first limiting component of the present invention;

Figure 4 is the motor casing after the end of the motor casing is rolled by the roll forming device for the end of the motor casing in the first embodiment;

5 is a schematic diagram of the overall structure of the roll forming device for the end of the motor casing in the second embodiment of the present invention;

6 is a schematic diagram of the overall structure of the anti-shake mechanism in the second embodiment of the present invention;

Among them, 1. rolling mechanism; 2. casing driving mechanism; 3. anti-shake mechanism; 4. casing; 5. end cover;

11. Hob; 12. The first bearing;

21. The first limit part; 22, the second limit part; 23, the third limit part; 24, the lead screw;

211, arc-shaped petal structure; 212, convex part;

31. Arc-shaped tabs;

41. Hemming; 42. Ring limit table.

Detailed ways

The present invention will be further described below with reference to the accompanying drawings and embodiments.

It should be noted that the following detailed description is exemplary and intended to provide further explanation of the application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It should be noted that the terminology used herein is for the purpose of describing specific embodiments only, and is not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural as well, furthermore, it is to be understood that when the terms "comprising" and/or "including" are used in this specification, it indicates that There are features, steps, operations, devices, components and/or combinations thereof.

Example 1

As shown in FIG. 1 , a motor casing end roll forming device includes: a rolling mechanism 1 for rolling the end edge of the motor casing 4 and a machine for driving the motor casing 4 to rotate Shell driving mechanism 2, the rolling mechanism 1 and the casing driving mechanism 2 are arranged perpendicular to each other, when the rolling mechanism 1 rolls the edge of the motor casing 4, the casing driving mechanism 2 drives the motor The casing 4 is rotated, so that the end edges of the motor casing 4 are all roll-formed;

The rolling mechanism 1 includes a rolling component, a position adjusting component and a first driving component, wherein:

One end of the rolling member is formed with a hob 11, one end of the hob 11 is a cylinder, the other end is a circular table, the side wall generatrix of the circular table is a concave arc in the direction of the axis, and the arc is close to the cylinder. The end of the hob is tangent to the side wall of the cylinder; during the rotation of the hob 11, the cylindrical part of the hob 11 rolls the end of the motor casing 4, so that the end of the motor casing 4 is bent to form The new end face, the side wall of the circular table squeezes the edge of the end of the motor casing 4 to avoid the edge of the end of the motor casing 4 bulging to the outside during the rolling process;

The position adjustment assembly is connected with the rolling member, and is used to adjust the position of the rolling member so that the side wall of the hob 11 is directly opposite to the edge of the motor casing 4;

The first driving assembly is pivotally connected with one end of the rolling member away from the hob 11, and is used to drive the rolling member to rotate;

The casing driving mechanism 2 includes a limiting component for limiting the motor casing 4 and a second driving component for driving the motor casing 4 to rotate, wherein:

The limiting assembly includes a first limiting member 21 , as shown in FIG. 2 and FIG. 3 , the first limiting member 21 is a cylindrical structure, and a plurality of edge walls along the sidewall generatrix are formed on the edge sidewall of the open end. The extended gap divides the open end of the first limiting member 21 into a plurality of arc-shaped petal-like structures 211. During the rolling operation, the first limiting member 21 is interferingly sleeved on the motor. Outside the shell 4, a plurality of arc-shaped petal structures 211 jointly embrace the side wall of the motor casing 4 through the radial elastic force generated by the interference fit, so that the circumferential direction of the motor casing 4 and the first limiting member 21 is relatively fixed. ;

The second driving assembly is used to drive the first limiting member 21 to rotate. During the rolling operation, the second driving assembly drives the first limiting member 21 to drive the motor casing 4 to rotate in the axial direction. At the same time, the hob 11 of the rolling component rolls the edge of the motor casing 4 under the driving of the first driving assembly. When the limiting assembly drives the motor casing 4 to rotate for one week, the rolling operation is completed and is rolled. The molded case 4 is shown in FIG. 4 .

As a preferred embodiment, the position adjustment assembly includes a horizontal position adjustment member and a vertical position adjustment member. Preferably, both the horizontal position adjustment member and the vertical position adjustment member include an air cylinder.

As a preferred embodiment, as shown in FIG. 3 , the outer wall of the arc-shaped petal structure 211 is further formed with a raised portion 212 extending along its circumferential direction, and the raised portion 212 is close to the first limit position The side of the open end of the component 21 and the side away from the open end of the first limiting component 21 are both gently sloped, so as to increase the structural rigidity and elastic force of the arc-shaped petal structure 211 .

As a preferred embodiment, as shown in FIG. 2 , the limiting assembly further includes a second limiting member 22 connected to the second driving assembly, and the second limiting member 22 is cylindrical, It is sleeved outside the first limiting member 21 , and the first limiting member 21 can slide along the axial direction of the second limiting member 22 ; when the first limiting member 21 slides away from the second limiting member 22 , the arc-shaped petal structure 211 of the first limiting member 21 can be completely extended out of the second limiting member 22, so that the motor casing 4 can be assembled into the first limiting member 21;

When the first limiting member 21 slides in the opposite direction to the bottom of the second limiting member 22 , the inner wall of the opening end of the second limiting member 22 abuts against the side of the raised portion 212 away from the opening end of the first limiting member 21 , thereby increasing the embracing force of the arc-shaped petal structure 211 to the motor casing 4 .

As a preferred embodiment, as shown in FIG. 2 , the limiting assembly further includes a third limiting member 23 , and the third limiting member 23 is disposed at the bottom of the first limiting member 21 and is close to the One end of the open end of the first limiting member 21 is formed with a concave portion that matches the shape of the bottom of the motor casing 4. When the motor casing 4 is inserted into the first limiting member 21, the bottom of the motor casing 4 is embedded in the bottom of the motor casing 4. inside the depression.

As a preferred embodiment, as shown in FIG. 2 , the casing driving mechanism 2 further includes a first lifting mechanism for driving the first limiting member 21 away from or approaching the second limiting member 22 . A lifting mechanism penetrates through the second limiting member 22 and the third limiting member 23 and is connected to the bottom of the first limiting member 21 .

As a preferred embodiment, the first lifting mechanism includes a lead screw 24 .

This embodiment also provides a motor, which includes a casing 4, an end cover 5, a rotor and accessories. The end cover 5 is disposed at the open end of the casing 4 and is formed together with the casing 4 to accommodate the rotor and the accessories. The accommodating space, wherein, as shown in FIG. 4 , the inner wall of the casing 4 is recessed inwardly near the open end to form an annular limiting platform 42 for axially limiting the end cover 5;

The open end of the casing 4 is bent inward to form a folded edge 41 , the inner edge of the end cover 5 abuts on the annular stop 42 , and the outer edge is covered by the folded edge of the open end of the casing 4 . Inside 41 , in particular, the folded edge 41 of the casing 4 is roll-formed by the above-mentioned roll forming device for the end portion of the motor casing 4 .

As a preferred embodiment, a plurality of raised edges are formed on the open end of the casing 4. In this way, before the rolling operation is performed, the position of the hob 11 is adjusted to the gap between the adjacent raised edges. After the rolling operation is started, the hob 11 and the casing 4 rotate simultaneously, and there is no need to adjust the position of the hob 11 during the rolling process.

Embodiment 2

As shown in FIG. 5 , the difference from the first embodiment is that this embodiment is further provided with an anti-shake mechanism 3 and a second lifting mechanism that is connected to the anti-shake mechanism 3 and drives the anti-shake mechanism 3 to rise and fall. It is arranged opposite to the casing driving mechanism 2. After the motor casing 4 is assembled into the first limiting member 21, the lifting mechanism drives the anti-shake mechanism 3 to move downward, so that the end of the anti-shake mechanism 3 abuts against the motor end. cover 5, so as to avoid uneven rolling of the end face of the motor housing 4 due to motor rotation jitter during the rolling operation.

As a preferred embodiment, as shown in FIG. 6 , a plurality of arc-shaped tabs 31 for abutting on the motor end cover 5 are formed at the end of the anti-shake mechanism 3 facing the casing driving mechanism 2 . , each arc-shaped convex piece 31 is evenly distributed at the end of the anti-shake mechanism 3 ; preferably, there are four arc-shaped convex pieces 31 .

As a preferred embodiment, the second lifting mechanism includes a lifting cylinder (not shown in the figure).

It should be noted that since the casing with accessories such as rotors is assembled, its weight is heavier than the casing without accessories such as rotors. Therefore, when rolling the end of the latter, the scheme of Embodiment 2 is mostly used. A process that is mostly used for rolling the casing without motor accessories such as rotors.

The purpose of connecting the end cover of the motor to the casing is mainly to protect the rotor and other parts inside the casing. Therefore, as long as the end cover will not be separated from the edge of the casing, and the strength of the connection between the two is even, the casing is based on this. The device is used to roll the open end of the motor casing, so that the open end forms a folded edge bent inward, so that the open end forms a folded edge bent inward. Before pressing, place the end cover on the annular limit table on the inner wall of the casing. In this way, it can not only ensure the concentricity between the casing and the end cover, but also ensure that the connection between the casing 4 and the end cover is evenly stressed; it can also effectively Simplify the assembly process of the casing and the end cover, and improve the efficiency of motor assembly.

Although the embodiments of the present invention 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 invention, and those of ordinary skill in the art will not depart from the principles and spirit of the present invention Under the circumstance of the present invention, the above-described embodiments can be changed, modified, replaced and modified within the scope of the present invention, and any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention still belong to the present invention within the scope of the technical solution.

Claims (10)

1. A motor casing end roll forming device, characterized in that it comprises: a rolling mechanism (1) for rolling the end edge of the motor casing (4) and a rolling mechanism (1) for driving the motor casing (4) The rotating casing driving mechanism (2), the rolling mechanism (1) and the casing driving mechanism (2) are arranged perpendicular to each other. When the end edge is rolled, the casing driving mechanism (2) drives the motor casing (4) to rotate, so that all the end edges of the motor casing (4) are formed by roll forming; The rolling mechanism (1) includes a rolling component, a position adjusting component and a first driving component, wherein: One end of the rolling member is formed with a hob (11), one end of the hob (11) is a cylinder, the other end is a circular table, and the generatrix of the side wall of the circular table is an arc concave in the direction of the axis, the arc The end of the line close to the cylinder is tangent to the side wall of the cylinder; during the rotation of the hob (11), the cylindrical part of the hob (11) rolls the end of the motor casing (4), A new end face is formed by bending the end of the motor casing (4), and the side wall of the circular table presses the edge of the end of the motor casing (4), so as to prevent the motor casing (4) from being damaged during the rolling process. The edge of the end bulges outwards; The position adjustment assembly is connected with the rolling member, and is used to adjust the position of the rolling member so that the side wall of the hob (11) is directly opposite to the edge of the motor casing (4); The first driving assembly is axially connected with one end of the rolling member away from the hob (11), and is used for driving the rolling member to rotate; The casing driving mechanism (2) includes a limiting component for limiting the motor casing (4) and a second driving component for driving the motor casing (4) to rotate, wherein: The limiting assembly includes a first limiting member (21), the first limiting member (21) is a cylindrical structure, and a plurality of gaps extending along the generatrix direction of the sidewall are formed on the edge sidewall of its open end, so the The gap divides the open end of the first limiting member (21) into a plurality of arc-shaped petal-like structures (211), and during the rolling operation, the first limiting member (21) is tightly sleeved on the motor Outside the casing (4), a plurality of arc-shaped petal structures (211) jointly embrace the side wall of the motor casing (4) through the radial elastic force generated by the interference fit, so that the motor casing (4) and the first The circumferential direction of the limiting member (21) is relatively fixed; The second driving assembly is used for driving the first limiting member (21) to rotate, and during the rolling operation, the second driving assembly drives the first limiting member (21) to drive the motor casing (4). ) rotates in the axial direction, at the same time, the hob (11) of the rolling part rolls the edge of the end of the motor casing (4) under the driving of the first driving assembly, when the limiting assembly drives the motor casing (4) After one rotation, the rolling operation is completed. 2 . The roll forming device for the end of a motor casing according to claim 1 , wherein the outer wall of the arc-shaped petal structure ( 211 ) is further formed with a raised portion extending along its circumferential direction. 3 . (212), the side of the raised portion (212) close to the opening end of the first limiting member (21) and the side away from the opening end of the first limiting member (21) are both gently sloped, so as to increase the arc-shaped petal structure (211) Structural stiffness and elastic force. 3 . The roll forming device for the end of a motor casing according to claim 2 , wherein the limiting assembly further comprises a second limiting member ( 22 ) connected with the second driving assembly, 3 . The second limiting member (22) is cylindrical, and is sleeved outside the first limiting member (21), and the first limiting member (21) can be along the axis of the second limiting member (22). sliding; when the first limiting member (21) slides away from the second limiting member (22), the arc-shaped petal structure (211) of the first limiting member (21) can completely protrude from the second limiting member (21) outside the limiting part (22), so that the motor casing (4) can be assembled into the first limiting part (21); When the first limiting member (21) slides in the opposite direction to the bottom of the second limiting member (22), the inner wall of the opening end of the second limiting member (22) and the raised portion (212) are away from the first limiting member (212). One side of the open end of the positioning member (21) is abutted against, thereby increasing the embracing force of the arc-shaped petal structure (211) on the motor casing (4). 4 . The roll forming device for the end of a motor casing according to claim 3 , wherein the limiting assembly further comprises a third limiting component ( 23 ), and the third limiting component ( 23 ). 5 . ) is arranged at the bottom of the first limiting member (21), and its end close to the open end of the first limiting member (21) is formed with a recessed portion that matches the shape of the bottom of the motor casing (4). 4) When inserted into the first limiting member (21), the bottom of the motor casing (4) is embedded in the concave portion. 5. A motor casing end roll forming device according to claim 4, wherein the casing driving mechanism (2) further comprises a device for driving the first limiting member (21) away from or close to The first lifting mechanism of the second limiting member (22), the first lifting mechanism penetrates the second limiting member (22) and the third limiting member (23) and is connected to the first limiting member (21) bottom of. 6 . The roll forming device for the end of a motor casing according to claim 5 , wherein the first lifting mechanism comprises a lead screw ( 24 ). 7 . 7 . The roll forming device for the end of a motor casing according to claim 1 , wherein the device further comprises an anti-shake mechanism ( 3 ) and an anti-shake mechanism ( 3 ) which is connected to the anti-shake mechanism ( 3 ) and drives the anti-shake mechanism ( 7 . 8 . 3) The second lifting mechanism for lifting, the anti-shake mechanism (3) is arranged opposite to the casing driving mechanism (2), and after the motor casing (4) is assembled into the first limiting member (21), The lifting mechanism drives the anti-shake mechanism (3) to move downward, so that the end of the anti-shake mechanism (3) abuts on the motor end cover (5), so as to avoid the motor casing caused by the motor rotating jitter during the rolling operation. (4) Rolling of the end face of the body is not smooth. 8 . The roll forming device for the end of a motor casing according to claim 7 , wherein the anti-shake mechanism ( 3 ) is formed with a plurality of With respect to the arc-shaped lugs (31) abutting on the motor end cover (5), the arc-shaped lugs (31) are evenly distributed at the end of the anti-shake mechanism (3). 9 . The roll forming device for the end of a motor casing according to claim 7 , wherein the second lifting mechanism comprises a lifting cylinder. 10 . 10. A motor comprising a casing (4), an end cover (5), a rotor and accessories, wherein the end cover (5) is arranged at an open end of the casing (4) and is formed together with the casing (4) An accommodating space for accommodating rotors and accessories, characterized in that the inner wall of the casing (4) is recessed inward near the open end to form an annular limiter for axially limiting the end cover (5). Desk (42); The open end of the casing (4) is bent inward to form a folded edge (41), the inner edge of the end cover (5) abuts on the annular limiting platform (42), and the outer edge is covered Inside the folded edge (41) of the open end of the casing (4), wherein the folded edge (41) of the casing (4) is formed by the roll forming device for the end of the motor casing according to any one of claims 1-9 Roll forming.

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