Electric motor rotor housing spin riveting device

Abstract

The utility model relates to a motor rotor cover shell spin riveting device, including base, set up on base's loading fixture, up and down removal in loading fixture top's lifting plate, the riveting subassembly of switching in the lifting plate, drive the first driver of lifting plate, drive the second driver of riveting subassembly, riveting subassembly includes rotating shaft, fixed in rotating shaft lower extreme's connecting arm, horizontal switching in connecting arm inside's riveting spare, the axis of rotating shaft coincides with the axis of motor rotor loaded in loading fixture, riveting spare has first disc body, coaxial connection in second disc body in first disc body inner end surface, the diameter of second disc body is less than the diameter of first disc body, and the distance between first disc body inner end surface and rotating shaft axis of rotation is same with the radius of motor rotor. The utility model not only avoids the rotor core damage caused by stamping, prevents the magnetic steel loosening caused by stamping vibration, guarantees product quality, and avoids the safety accident caused by the operation mistake, eliminates the security risk.

Description

Technical Field

[0001] This utility model relates to a riveting device for an electric motor rotor housing, which is applicable to the field of electric motor processing technology. Background Technology

[0002] The motor rotor housing is a protective structure covering the outside of the motor rotor. After the windings or magnets in the motor rotor are installed, a metal shell is placed over them to protect the internal structure and stabilize it. During installation, the rotor housing is typically pre-machined into a cylindrical shape. The rotor is then fitted into the housing, and the edges at both ends of the housing are bent inwards to rivet the housing onto the rotor, thus securing it in place. In existing technology, riveting the housing usually involves manual operation using a stamping machine. A worker places the housing with the rotor inside into a stamping fixture, and then the machine is activated, using the impact force to bend and rivet the edges of the housing. However, because the stamping machine generates significant impact force, over-stamping can easily occur during actual processing, leading to deformation and damage to the rotor core. Furthermore, even without over-stamping, the vibration generated by the impact force is transmitted to the rotor core, causing the magnets mounted on the core to loosen or fall off during vibration, thus negatively impacting the yield rate of the motor rotor. In addition, processing by manually operating stamping equipment may result in injury due to operator error or inattention, posing a significant safety hazard. Utility Model Content

[0003] In order to overcome the defects of the existing technology, this utility model proposes a riveting device for motor rotor housing.

[0004] The technical solution adopted by this utility model is as follows: a motor rotor housing riveting device, comprising a base, a loading fixture disposed on the base and used for loading the motor rotor, a lifting plate movably disposed above the loading fixture, a riveting assembly rotatably connected to the lifting plate and used for riveting the rotor housing, a first driver for driving the lifting plate to move up and down, and a second driver for driving the riveting assembly to rotate. The riveting assembly includes a rotating shaft vertically passing through the lifting plate and rotatably connected to the lifting plate, at least one connecting arm fixedly disposed at the lower end of the rotating shaft and having a distance between it and the axis of the rotating shaft, and a riveting member rotatably connected to the corresponding connecting arm facing the rotating shaft about a horizontally disposed rotating shaft. The axis of the rotating shaft coincides with the axis of the motor rotor mounted in the loading fixture. The riveting component has a first disc and a second disc coaxially connected to the inner end face of the first disc. The diameter of the second disc is smaller than the diameter of the first disc. The distance between the inner end face of the first disc and the axis of the rotating shaft is the same as the radius of the motor rotor. The riveting device has at least two working states. When it is in the first working state, the lifting plate moves away from the loading fixture, and the riveting component is disengaged from the motor rotor. When the riveting device is in the second working state, the lifting plate moves closer to the loading fixture, the riveting component abuts against the motor rotor, and the inner end face of the first disc abuts against the side of the rotor housing, and the side of the second disc abuts against the top of the rotor housing. During the riveting process, the riveting device is first put into its first working state so that the workpiece to be processed can be placed in the loading fixture. Then, the lifting plate is driven to move down by the first driver so that the riveting part on the connecting arm abuts against the workpiece and the inner end face of the first disc abuts against the side of the rotor cover, while the side of the second disc abuts against the top of the rotor cover. Then, the rotating shaft is driven to rotate by the second driver, which drives the riveting part to make a circular motion around the axis of the workpiece. During this process, the riveting part is continuously pressed down by the first driver, thereby gradually bending the edge of the rotor cover inward, thus realizing the riveting process of the rotor cover. The riveting process using the above structure not only avoids damage to the rotor core caused by excessive stamping, but also prevents the vibration generated by stamping from causing the magnets installed inside the core to loosen or fall off, thus ensuring product quality. Furthermore, by replacing stamping riveting with rotary riveting, safety accidents caused by operator error or inattention are avoided, eliminating safety hazards in the processing process.

[0005] Furthermore, the motor rotor housing riveting device also includes a top plate disposed above the lifting plate, at least one vertically disposed between the top plate and the base, the lifting plate being slidably fitted onto the sliding rod, and the first actuator being configured as a telescopic cylinder, the cylinder body of which is fixed to the top plate, and the output axis of which passes downward through the top plate and connects to the lifting plate. The telescopic cylinder drives the lifting plate to slide up and down, while the at least one sliding rod improves the stability of the lifting plate during sliding, ensuring that the first actuator can apply a force sufficient to bend the rotor housing downward through the lifting plate.

[0006] Furthermore, the second driver is configured as a drive motor, which is fixed to the lifting plate. A first gear is fixedly connected to the output shaft of the drive motor, and a second gear meshing with the first gear is fixedly connected to the upper end of the rotating shaft. By driving the first gear with the drive motor and causing the second gear to rotate, the rotating shaft is driven, so that the riveting parts can move in a circular motion around the motor rotor.

[0007] Furthermore, at least two connecting arms are provided, and at least two connecting arms and their corresponding riveting components are symmetrical about the axis of rotation. By providing multiple connecting arms and riveting components respectively provided on the connecting arms, the riveting process of the rotor housing can be completed more quickly, further improving processing efficiency.

[0008] Furthermore, the riveting assembly also includes a horizontal arm fixedly connected to the lower end of the rotating shaft and arranged horizontally, and an abutment block rotatably connected to the bottom of the horizontal arm. At least two connecting arms are respectively disposed at both ends of the horizontal arm. The rotation axis of the abutment block coincides with the axis of rotation of the rotating shaft. When the riveting device is in the second working state, the lower end of the abutment block abuts against the top of the motor rotor. When the riveting device enters the second working state for riveting processing, the abutment block abuts against the motor rotor, improving the stability of the rotor during processing, preventing the rotor from changing position during riveting and causing riveting errors, and improving the processing yield.

[0009] Furthermore, an arc-shaped chamfer is provided at the connection between the first disc and the second disc, so that the inner end face of the first disc and the side face of the second disc can be smoothly transitioned, thereby reducing the difficulty of riveting.

[0010] Furthermore, the riveting device also includes a detection component fixedly mounted on the base for detecting the riveting status of the rotor housing. The detection component includes a signal transmitting end and a signal receiving end located opposite each other on both sides of the loading fixture. The signal transmitting end and the signal receiving end are at the same height, lower than the height of the rotor housing inside the loading fixture before riveting, and higher than the height of the rotor housing inside the loading fixture after riveting. When the rotor housing is not properly riveted, its height will obstruct signal transmission between the signal transmitting end and the signal receiving end. However, when the housing is properly riveted, the signal receiving end can smoothly receive the signal emitted by the signal transmitting end, thereby detecting the riveting status of the rotor housing and ensuring processing quality.

[0011] Furthermore, the distance between the line connecting the signal transmitter and the signal receiver and the centerline of the rotating shaft is greater than 0 and less than the radius of the motor rotor. By creating a certain distance between the signal transmitter and the signal receiver and the centerline of the motor rotor, signal transmission is prevented from being blocked by the components in the riveting assembly, thus ensuring the riveting quality.

[0012] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0013] The motor rotor housing riveting device of this utility model has a simple structure and is easy to operate. By cooperating with the lifting plate and riveting parts, the traditional stamping riveting process is improved to rotary roller riveting. This not only avoids damage to the rotor core caused by excessive stamping, but also prevents the vibration generated by stamping from causing the magnets installed inside the core to loosen or fall off, thus ensuring product quality. Furthermore, by replacing stamping riveting with rotary riveting, safety accidents caused by operator error or inattention are avoided, and safety hazards in the processing process are eliminated. Attached Figure Description

[0014] The following sections will describe some specific embodiments of the present invention in a detailed manner by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar components or parts. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0015] Figure 1 This is a schematic diagram of the structure of one embodiment of the present utility model. Figure 1 ;

[0016] Figure 2 yes Figure 1 Enlarged view of the structure of region A in the illustrated embodiment;

[0017] Figure 3 yes Figure 1 Structural diagram of the embodiment shown Figure 2 ;

[0018] The annotations in the attached figures are explained as follows:

[0019] 1. Base; 2. Loading fixture; 3. Lifting plate; 4. Riveting assembly; 41. Rotating shaft; 42. Connecting arm; 43. Riveting piece; 431. First disc; 432. Second disc; 44. Cross arm; 45. Abutment block; 5. First driver; 6. Second driver; 61. First gear; 62. Second gear; 7. Top plate; 8. Slide rod; 9. Detection assembly; 91. Signal transmitter; 92. Signal receiver. Detailed Implementation

[0020] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] In the description of this utility model, it should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0022] Reference Appendix Figure 1-3The motor rotor housing riveting device in this embodiment includes a base 1, a loading fixture 2 mounted on the base 1 for loading the motor rotor, a lifting plate 3 movably mounted above the loading fixture 2, a riveting assembly 4 rotatably connected to the lifting plate 3 for riveting the rotor housing, a first driver 5 for driving the lifting plate 3 to move up and down, and a second driver 6 for driving the riveting assembly 4 to rotate. The riveting assembly 4 includes a rotating shaft 41 vertically passing through the lifting plate 3 and rotatably connected to the lifting plate 3, at least one connecting arm 42 fixedly mounted at the lower end of the rotating shaft 41 and spaced apart from the axis of the rotating shaft 41, and a riveting member 43 rotatably connected to the corresponding connecting arm 42 about a horizontally mounted rotating shaft, facing the rotating shaft 41. The axis of the motor rotor loaded in the loading fixture 2 coincides. The riveting part 43 has a first disc 431 and a second disc 432 coaxially connected to the inner end face of the first disc 431. The diameter of the second disc 432 is smaller than the diameter of the first disc 431. The distance between the inner end face of the first disc 431 and the axis of rotation 41 is the same as the radius of the motor rotor. The riveting device has at least two working states. When it is in the first working state, the lifting plate 3 moves away from the loading fixture 2 and the riveting part 43 is separated from the motor rotor. When the riveting device is in the second working state, the lifting plate 3 moves closer to the loading fixture 2 and the riveting part 43 abuts against the motor rotor. The inner end face of the first disc 431 abuts against the side of the rotor cover, and the side of the second disc 432 abuts against the top of the rotor cover. During riveting, the riveting device is first put into its first working state so that the workpiece to be processed can be placed in the loading fixture 2. Then, the first driver 5 drives the lifting plate 3 to move downward, so that the riveting part 43 on the connecting arm 42 abuts against the workpiece to be processed, and the inner end face of the first disc 431 abuts against the side of the rotor cover, while the side of the second disc 432 abuts against the top of the rotor cover. Then, the second driver 6 drives the rotating shaft 41 to rotate, causing the riveting part to move in a circular motion around the axis of the workpiece to be processed. During this process, the first driver 5 drives the riveting part 43 to continuously press down, thereby gradually bending the edge of the rotor cover inward to achieve the riveting process of the rotor cover. The riveting process using the above structure not only avoids damage to the rotor core caused by excessive stamping, but also prevents the vibration generated by stamping from causing the magnets installed inside the core to loosen or fall off, thus ensuring product quality. Furthermore, by replacing stamping riveting with rotary riveting, safety accidents caused by operator error or inattention are avoided, and safety hazards during the processing are eliminated.

[0023] In a more preferred embodiment, the motor rotor housing riveting device further includes a top plate 7 disposed above the lifting plate 3, and at least one slide rod 8 vertically disposed between the top plate 7 and the base 1. The lifting plate 3 is slidably fitted onto the slide rod 8. The first actuator 5 is configured as a telescopic cylinder, the cylinder body of which is fixed to the top plate 7, and the output axis of the telescopic cylinder passes downward through the top plate 7 and is connected to the lifting plate 3. The telescopic cylinder drives the lifting plate 3 to slide up and down, while the at least one slide rod 8 improves the stability of the lifting plate 3 during sliding, ensuring that the first actuator 5 can apply a force sufficient to bend the rotor housing downward through the lifting plate 3.

[0024] In a more preferred embodiment, the second driver 6 is configured as a drive motor, which is fixed to the lifting plate 3. A first gear 61 is fixedly connected to the output shaft of the drive motor, and a second gear 62 that meshes with the first gear 61 is fixedly connected to the upper end of the rotating shaft 41. By driving the first gear 61 and the second gear 62 to rotate through the drive motor, the rotating shaft 41 is driven, thereby causing the riveting part 43 to move in a circular motion around the motor rotor.

[0025] In a more preferred embodiment, at least two connecting arms 42 are provided, and the at least two connecting arms 42 and the corresponding riveting parts 43 are symmetrical about the axis of rotation 41. By providing multiple connecting arms 42 and riveting parts 43 respectively provided on the connecting arms 42, the riveting process of the rotor cover can be completed more quickly, further improving the processing efficiency.

[0026] In a more preferred embodiment, the riveting assembly 4 further includes a horizontal arm 44 fixedly connected to the lower end of the rotating shaft 41 and arranged in a horizontal direction, and an abutment block 45 rotatably connected to the bottom of the horizontal arm 44. At least two connecting arms 42 are respectively disposed at both ends of the horizontal arm 44. The rotation axis of the abutment block 45 coincides with the axis of rotation of the rotating shaft 41. When the riveting device is in the second working state, the lower end of the abutment block 45 abuts against the top of the motor rotor. When the riveting device enters the second working state for riveting processing, the abutment block 45 abuts against the motor rotor, improving the stability of the rotor during processing, preventing the rotor from changing position during riveting and causing riveting errors, and improving the processing yield.

[0027] In a more preferred embodiment, an arc-shaped chamfer is provided at the connection between the first disc 431 and the second disc 432, so that the inner end face of the first disc 431 and the side face of the second disc 432 can be smoothly transitioned, thereby reducing the difficulty of riveting.

[0028] In a more preferred embodiment, the riveting device further includes a detection component 9 fixedly mounted on the base 1 for detecting the riveting status of the rotor cover. The detection component 9 includes a signal transmitting end 91 and a signal receiving end 92 located opposite each other on both sides of the loading fixture 2. The signal transmitting end 91 and the signal receiving end 92 are at the same height, and their height is lower than the height of the rotor cover inside the loading fixture 2 before riveting, and higher than the height of the rotor cover inside the loading fixture 2 after riveting. When the rotor cover is not riveted properly, its height will obstruct signal transmission between the signal transmitting end 91 and the signal receiving end 92. However, when the cover is riveted properly, the signal receiving end 92 can smoothly receive the signal emitted by the signal transmitting end 91, thereby detecting the riveting status of the rotor cover and ensuring processing quality.

[0029] In a more preferred embodiment, the distance between the line connecting the signal transmitter 91 and the signal receiver 92 and the axis of rotation 41 is greater than 0 and less than the radius of the motor rotor. By creating a certain distance between the signal transmitter 91 and the signal receiver 92 and the axis of rotation of the motor rotor, signal transmission is prevented from being blocked by the components in the riveting assembly, thus ensuring the riveting quality.

[0030] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0031] The motor rotor housing riveting device of this utility model has a simple structure and is easy to operate. By cooperating with the lifting plate and riveting parts, the traditional stamping riveting process is improved to rotary roller riveting. This not only avoids damage to the rotor core caused by excessive stamping, but also prevents the vibration generated by stamping from causing the magnets installed inside the core to loosen or fall off, thus ensuring product quality. Furthermore, by replacing stamping riveting with rotary riveting, safety accidents caused by operator error or inattention are avoided, and safety hazards in the processing process are eliminated.

[0032] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the protection scope of this utility model.

Claims

1. An electrical machine rotor can enclosure spin riveting device, characterized by: The device includes a base (1), a loading fixture (2) mounted on the base (1) for loading a motor rotor, a lifting plate (3) movably mounted above the loading fixture (2), a riveting assembly (4) rotatably connected to the lifting plate (3) for riveting a rotor housing, a first driver (5) for driving the lifting plate (3) to move up and down, and a second driver (6) for driving the riveting assembly (4) to rotate. The riveting assembly (4) includes a rotating shaft (41) vertically inserted through the lifting plate (3) and rotatably connected to the lifting plate (3), at least one connecting arm (42) fixedly mounted at the lower end of the rotating shaft (41) and spaced apart from the axis of the rotating shaft (41), and a riveting piece (43) rotatably connected to the corresponding connecting arm (42) about a horizontally mounted rotating shaft and facing the rotating shaft (41). The axis of the rotating shaft (41) is connected to the loading fixture. (2) The axis of the motor rotor coincides. The riveting part (43) has a first disc (431) and a second disc (432) coaxially connected to the inner end face of the first disc (431). The diameter of the second disc (432) is smaller than the diameter of the first disc (431). The distance between the inner end face of the first disc (431) and the axis of the rotating shaft (41) is the same as the radius of the motor rotor. The riveting device has at least two working states. When it is in the first working state, the lifting plate (3) is away from the loading fixture (2), and the riveting part (43) is separated from the motor rotor. When the riveting device is in the second working state, the lifting plate (3) is close to the loading fixture (2), the riveting part (43) abuts against the motor rotor, and the inner end face of the first disc (431) abuts against the side of the rotor cover, and the side of the second disc (432) abuts against the top of the rotor cover.

2. The motor rotor housing riveting device according to claim 1, characterized in that: The motor rotor housing riveting device also includes a top plate (7) disposed above the lifting plate (3) and at least one slide rod (8) vertically disposed between the top plate (7) and the base (1). The lifting plate (3) is slidably sleeved on the slide rod (8). The first driver (5) is configured as a telescopic cylinder. The cylinder body of the telescopic cylinder is fixed on the top plate (7), and the output axis of the telescopic cylinder passes downward through the top plate (7) and is connected to the lifting plate (3).

3. The motor rotor housing riveting device according to claim 1, characterized in that: The second driver (6) is configured as a drive motor, and the drive motor is fixed on the lifting plate (3). A first gear (61) is fixedly connected to the output shaft of the drive motor, and a second gear (62) that meshes with the first gear (61) is fixedly connected to the upper end of the rotating shaft (41).

4. The motor rotor housing riveting device according to claim 1, characterized in that: At least two connecting arms (42) are provided, and at least two connecting arms (42) and the corresponding riveting parts (43) are symmetrical about the axis of rotation (41).

5. The motor rotor housing riveting device according to claim 4, characterized in that: The riveting assembly (4) further includes a horizontal arm (44) fixedly connected to the lower end of the rotating shaft (41) and arranged in the horizontal direction, and an abutment block (45) rotatably connected to the bottom of the horizontal arm (44). At least two connecting arms (42) are respectively disposed at both ends of the horizontal arm (44). The rotation axis of the abutment block (45) coincides with the axis of rotation of the rotating shaft (41). When the riveting device is in the second working state, the lower end of the abutment block (45) abuts against the top of the motor rotor.

6. The motor rotor housing riveting device according to claim 1, characterized in that: An arc-shaped chamfer is provided at the connection between the first disk body (431) and the second disk body (432).

7. The motor rotor housing riveting device according to claim 1, characterized in that: It also includes a detection component (9) fixedly mounted on the base (1) and used to detect the riveting status of the rotor cover. The detection component (9) includes a signal transmitting end (91) and a signal receiving end (92) respectively located on both sides of the loading fixture (2) and arranged opposite to each other. The signal transmitting end (91) and the signal receiving end (92) are at the same height. The height of the signal transmitting end (91) and the signal receiving end (92) is lower than the height of the rotor cover inside the loading fixture (2) before riveting, and the height of the signal transmitting end (91) and the signal receiving end (92) is higher than the height of the rotor cover inside the loading fixture (2) after riveting.

8. The motor rotor housing riveting device according to claim 7, characterized in that: The distance between the line connecting the signal transmitter (91) and the signal receiver (92) and the axis of rotation (41) is greater than 0 and less than the radius of the motor rotor.

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