Servo motor stator and rotor double-section assembling device

Abstract

The utility model provides a servo motor stator and rotor double-section assembling device, and belongs to the field of mechanical tools. The utility model discloses a rotor transmission shaft positioning device which comprises a mounting frame, a mounting table top is arranged on the mounting frame, a mounting block is arranged on the mounting table top, a stator placing groove is formed in the mounting block and penetrates through the mounting table top, a rotor transmission shaft positioning sleeve is arranged below the mounting table top, and a rotor transmission shaft is arranged on the rotor transmission shaft positioning sleeve. The lower end of the rotor transmission shaft positioning sleeve is connected with a double-section lifting structure, the double-section lifting structure is arranged on the mounting frame, the rotor transmission shaft positioning sleeve can movably penetrate through the stator placing groove and move to the upper side of the mounting table top, a positioning ejector pin is arranged above the mounting table top, and the positioning ejector pin is connected with the double-section lifting structure. The positioning ejector pin is connected with a downward pressing air cylinder, and the downward pressing air cylinder is arranged on the installation frame.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical tooling, and in particular relates to a dual-section assembly device for a servo motor stator and rotor. Background Technology

[0002] Currently, the assembly of motor stators and rotors typically involves fixing the stator and manually inserting the rotor into the stator using traditional tooling such as a pantograph or dummy shaft. When assembling the stator and rotor of an AC permanent magnet servo motor, the stator is placed outside the rotor. Due to the permanent magnets inside the rotor, a strong magnetic attraction is generated. This process is mostly manual. During assembly, when the stator approaches the rotor, it is attracted to the rotor, causing the inner surface of the stator to contact the outer surface of the rotor. As assembly continues, friction occurs between the contact surfaces of the stator and rotor, resulting in some bumping. Furthermore, due to the strong magnetic characteristics of the servo motor rotor, ensuring the concentricity of the rotor and stator assembly is crucial. High radial positioning accuracy of the rotor within the tooling is required, but achieving this high precision results in a lengthy insertion time for the worker.

[0003] For example, Chinese patent literature discloses a rotor assembly and fixing fixture [patent application number: CN201920335201.5], which includes a base, a positioning fixture fixed on the base, and a protective cover set on the outer wall of the positioning fixture. The positioning fixture is semi-enclosed cylindrical, and the two ends of the side wall form openings. The top of the positioning fixture is also provided with a semi-enclosed upper support ring. The inner side of the support ring is provided with a positioning ring. The positioning ring and the upper support ring form a stepped surface, and the height of the upper end face of the positioning ring is lower than the height of the upper support ring. Multiple positioning pins are also spaced apart on the upper end face of the positioning ring. Utility Model Content

[0004] The purpose of this invention is to address the above-mentioned problems by providing a servo motor stator and rotor dual-section assembly device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A servo motor stator and rotor dual-section assembly device includes a mounting frame, a mounting platform on the mounting frame, a mounting block on the mounting platform, a stator placement slot inside the mounting block, the stator placement slot penetrating the mounting platform, a rotor drive shaft positioning sleeve below the mounting platform, a dual-section lifting structure connected to the lower end of the rotor drive shaft positioning sleeve, the dual-section lifting structure being mounted on the mounting frame, the rotor drive shaft positioning sleeve being movable through the stator placement slot and moving to the upper side of the mounting platform, a positioning pin above the mounting platform, the positioning pin being connected to a pressing cylinder, the pressing cylinder being mounted on the mounting frame.

[0007] In the above-mentioned servo motor stator and rotor dual-stage assembly device, the dual-stage lifting structure includes a first-stage rotor lifting cylinder located at the bottom of the mounting frame. The output shaft end of the first-stage rotor lifting cylinder is provided with a first-stage sliding plate. The first-stage sliding plate is slidably connected to the mounting frame. A second-stage rotor lifting cylinder is provided on the first-stage sliding plate. The output shaft of the second-stage rotor lifting cylinder is connected to the rotor drive shaft positioning sleeve.

[0008] In the above-mentioned servo motor stator and rotor dual-section assembly device, the output shaft end of the second-stage rotor lifting cylinder is provided with a second-stage sliding plate, the second-stage sliding plate is slidably connected to the mounting frame, a fixing block is provided on the second-stage sliding plate, and the rotor drive shaft positioning sleeve is fixedly connected to the fixing block.

[0009] In the aforementioned servo motor stator and rotor dual-section assembly device, the rotor drive shaft positioning sleeve is detachably fixed to the fixing block by a nut.

[0010] In the above-mentioned servo motor stator and rotor dual-section assembly device, the mounting frame is provided with several vertically placed support rods, and the first-stage sliding plate and the second-stage sliding plate are slidably connected to the several support rods.

[0011] In the above-mentioned servo motor stator and rotor dual-section assembly device, the sliding plate is provided with a plurality of sliding sleeves that are slidably connected to the support rod.

[0012] In the above-mentioned servo motor stator and rotor dual-section assembly device, the bottom of the stator placement slot is provided with a stator placement surface, and the stator placement slot passes through the mounting platform through the positioning sleeve moving slot, the diameter of the positioning sleeve moving slot being smaller than the diameter of the stator placement slot.

[0013] In the above-mentioned servo motor stator and rotor dual-segment assembly device, a positioning support structure is provided on the inner side wall of the stator placement slot.

[0014] In the above-mentioned servo motor stator and rotor dual-segment assembly device, the inner wall of the stator placement slot is provided with two layers of positioning support structure. The two layers of positioning support structure are distributed in the vertical direction. The positioning support structure includes at least two positioning support blocks. The positioning support blocks of the upper and lower layers are not located on the same vertical plane.

[0015] In the aforementioned servo motor stator and rotor dual-section assembly device, the end of the positioning pin is conical and the tip is placed downwards.

[0016] Compared with existing technologies, the advantages of this utility model are:

[0017] 1. This technical solution ensures the concentricity between the stator assembly and the rotor assembly, and can overcome magnetic force without collision or wear.

[0018] 2. By using a dual-cylinder lifting mode with a first-stage rotor lifting cylinder and a second-stage rotor lifting cylinder to control the movement of the drive shaft positioning sleeve, the lifting distance of the drive shaft positioning sleeve is increased, the operating space is improved, and the rotor assembly is ensured not to fall off during installation.

[0019] 3. The drive shaft positioning sleeve can be replaced. When the drive shaft positioning sleeve is bent, it may cause insufficient concentricity accuracy. It should be replaced.

[0020] 4. The mounting platform is used to place the stator assembly, and the positioning support block is used to hold the stator assembly in place so that it does not move or rotate. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure;

[0022] Figure 2 yes Figure 1 A schematic diagram of the structure at the mounting block.

[0023] In the figure: mounting bracket 10, mounting platform 11, mounting block 12, stator placement slot 13, rotor drive shaft positioning sleeve 14, double-stage lifting structure 15, positioning pin 16, pressing cylinder 17, first-stage rotor lifting cylinder 18, first-stage sliding plate 19, second-stage rotor lifting cylinder 20, second-stage sliding plate 21, fixing block 22, nut 23, support rod 24, positioning sleeve moving slot 25, sliding sleeve 28, stator placement surface 26, positioning support block 27. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0025] This utility model provides a servo motor stator and rotor dual-section assembly device, combined with Figure 1-2 As shown, the system includes a mounting frame 10, a mounting platform 11 on the mounting frame 10, a mounting block 12 on the mounting platform 11, a stator placement groove 13 inside the mounting block 12, the stator placement groove 13 penetrating the mounting platform 11, a rotor drive shaft positioning sleeve 14 below the mounting platform 11, a double-stage lifting structure 15 connected to the lower end of the rotor drive shaft positioning sleeve 14, the double-stage lifting structure 15 being mounted on the mounting frame 10, the rotor drive shaft positioning sleeve 14 being movable through the stator placement groove 13 and moving to the upper side of the mounting platform 11, a positioning pin 16 above the mounting platform 11, the positioning pin 16 being connected to a pressing cylinder 17, the pressing cylinder 17 being mounted on the mounting frame 10.

[0026] In this embodiment, the stator placement slot 13 within the mounting block 12 is used to place the stator assembly. The mounting block 12 secures the stator placement slot 13 to the inside. The rotor drive shaft positioning sleeve 14 moves upward through the stator assembly under the operation of the dual-stage lifting structure 15, continuing upward to place one end of the rotor assembly's drive shaft into the rotor drive shaft positioning sleeve 14. The pressing cylinder 17 moves downward with the positioning pin 16, causing the other end of the rotor assembly to abut against the positioning pin 16. This fixes the rotor assembly through the positioning pin 16 and the drive shaft positioning sleeve 14. Then, the pressing cylinder 17 and the dual-stage lifting structure 15 operate, causing the positioning pin 16 and the rotor drive shaft positioning sleeve 14 to move downward at the same speed, or the moving speed of the positioning pin 16 to be greater than the moving speed of the rotor drive shaft positioning sleeve 14. This ensures that the rotor assembly remains fixed between the positioning pin 16 and the drive shaft positioning sleeve 14 during the movement, until the stator assembly and rotor assembly are successfully assembled. This scheme ensures the concentricity between the stator assembly and the rotor assembly, overcomes magnetic forces, and prevents collisions and wear.

[0027] The dual-stage lifting structure 15 includes a first-stage rotor lifting cylinder 18 located at the bottom of the mounting frame 10. The output shaft end of the first-stage rotor lifting cylinder 18 is provided with a first-stage sliding plate 19. The first-stage sliding plate 19 is slidably connected to the mounting frame 10. A second-stage rotor lifting cylinder 20 is provided on the first-stage sliding plate 19. The output shaft of the second-stage rotor lifting cylinder 20 is connected to the rotor drive shaft positioning sleeve 14.

[0028] In this embodiment, the movement of the drive shaft positioning sleeve 14 is controlled by a dual-cylinder lifting mode using a first-stage rotor lifting cylinder 18 and a second-stage rotor lifting cylinder 20, thereby increasing the lifting distance of the drive shaft positioning sleeve 14, improving the operating space, and ensuring that the rotor assembly will not fall off during installation.

[0029] The output shaft end of the second-stage rotor lifting cylinder 20 is provided with a second-stage sliding plate 21. The second-stage sliding plate 21 is slidably connected to the mounting bracket 10. A fixing block 22 is provided on the second-stage sliding plate 21. The rotor drive shaft positioning sleeve 14 is fixedly connected to the fixing block 22.

[0030] In this embodiment, the transition connection of the second-stage sliding plate 21 makes the movement of the output shaft of the second-stage rotor lifting cylinder 20 more stable, preventing insufficient concentricity accuracy caused by the shaking of the transmission shaft positioning sleeve 14 during movement.

[0031] The rotor drive shaft positioning sleeve 14 is detachably fixed to the fixing block 22 by a nut 23.

[0032] In this embodiment, the drive shaft positioning sleeve 14 can be replaced. When the drive shaft positioning sleeve 14 is bent, it is easy to cause insufficient concentricity accuracy, so it should be replaced.

[0033] The mounting frame 10 is provided with several vertically placed support rods 24, and the first-stage sliding plate 19 and the second-stage sliding plate 21 are slidably connected to the several support rods 24.

[0034] In this embodiment, the movement of the first-order sliding plate 19 and the second-order sliding plate 21 is made more stable by the guidance and support of the support rod 24, thereby further ensuring the concentricity accuracy.

[0035] The sliding plate is provided with a plurality of sliding sleeves 28 that are slidably connected to the support rod 24.

[0036] In this embodiment, the sliding sleeve 28 can be used to counteract the vibration generated between the first-order sliding plate 19 and the second-order sliding plate 21 and the support rod 24 when they move, making the installation process more stable.

[0037] The bottom of the stator placement groove 13 is provided with a stator placement surface 26. The stator placement groove 13 passes through the mounting platform 11 through the positioning sleeve moving groove 25. The diameter of the positioning sleeve moving groove 25 is smaller than the diameter of the stator placement groove 13.

[0038] The inner wall of the stator placement slot 13 is provided with a positioning support structure.

[0039] The inner wall of the stator placement slot 13 is provided with two layers of positioning support structure. The two layers of positioning support structure are distributed in the vertical direction. The positioning support structure includes at least two positioning support blocks 27. The positioning support blocks 27 of the upper and lower layers are not located on the same vertical plane.

[0040] In this embodiment, the mounting platform 11 is used to place the stator assembly, and the positioning support block 27 is used to hold the stator assembly in place so that the stator assembly will not move or rotate.

[0041] The end of the positioning pin 16 is conical and the tip is placed downwards.

[0042] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0043] Although this article frequently uses terms such as mounting bracket 10, mounting platform 11, mounting block 12, stator placement slot 13, rotor drive shaft positioning sleeve 14, double-stage lifting structure 15, positioning pin 16, pressing cylinder 17, first-stage rotor lifting cylinder 18, first-stage sliding plate 19, second-stage rotor lifting cylinder 20, second-stage sliding plate 21, fixing block 22, nut 23, support rod 24, positioning sleeve moving slot 25, sliding sleeve 28, stator placement surface 26, positioning support block 27, etc., these terms are used merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any kind of additional limitation would contradict the spirit of this utility model.

Claims

1. A servo motor stator and rotor dual-section assembly device, comprising a mounting bracket (10), characterized in that, The mounting frame (10) is provided with a mounting platform (11), and the mounting platform (11) is provided with a mounting block (12). The mounting block (12) is provided with a stator placement groove (13), which penetrates the mounting platform (11). The mounting platform (11) is provided with a rotor drive shaft positioning sleeve (14) below it. The lower end of the rotor drive shaft positioning sleeve (14) is connected to a double-stage lifting structure (15). The double-stage lifting structure (15) is provided on the mounting frame (10). The rotor drive shaft positioning sleeve (14) can move through the stator placement groove (13) and move to the upper side of the mounting platform (11). The mounting platform (11) is provided with a positioning pin (16) above it. The positioning pin (16) is connected to a pressing cylinder (17), which is provided on the mounting frame (10).

2. The servo motor stator and rotor dual-section assembly device according to claim 1, characterized in that, The dual-stage lifting structure (15) includes a first-stage rotor lifting cylinder (18) located at the bottom of the mounting frame (10). The output shaft end of the first-stage rotor lifting cylinder (18) is provided with a first-stage sliding plate (19). The first-stage sliding plate (19) is slidably connected to the mounting frame (10). A second-stage rotor lifting cylinder (20) is provided on the first-stage sliding plate (19). The output shaft of the second-stage rotor lifting cylinder (20) is connected to the rotor drive shaft positioning sleeve (14).

3. The servo motor stator and rotor dual-section assembly device according to claim 2, characterized in that, The output shaft end of the second-stage rotor lifting cylinder (20) is provided with a second-stage sliding plate (21), the second-stage sliding plate (21) is slidably connected to the mounting bracket (10), the second-stage sliding plate (21) is provided with a fixing block (22), and the rotor drive shaft positioning sleeve (14) is fixedly connected to the fixing block (22).

4. The servo motor stator and rotor dual-section assembly device according to claim 3, characterized in that, The rotor drive shaft positioning sleeve (14) is detachably fixed to the fixing block (22) by a nut (23).

5. The servo motor stator and rotor dual-section assembly device according to claim 3, characterized in that, The mounting frame (10) is provided with several vertically placed support rods (24), and the first-stage sliding plate (19) and the second-stage sliding plate (21) are slidably connected to the several support rods (24).

6. The servo motor stator and rotor dual-section assembly device according to claim 5, characterized in that, The sliding plate is provided with several sliding sleeves (28) that are slidably connected to the support rod (24).

7. The servo motor stator and rotor dual-section assembly device according to claim 1, characterized in that, The stator placement groove (13) has a stator placement surface (26) at its bottom. The stator placement groove (13) passes through the mounting platform (11) through the positioning sleeve moving groove (25). The diameter of the positioning sleeve moving groove (25) is smaller than the diameter of the stator placement groove (13).

8. A servo motor stator and rotor dual-section assembly device according to claim 7, characterized in that, The inner wall of the stator placement slot (13) is provided with a positioning support structure.

9. A servo motor stator and rotor dual-section assembly device according to claim 8, characterized in that, The inner wall of the stator placement slot (13) is provided with two layers of positioning support structure. The two layers of positioning support structure are distributed in the vertical direction. The positioning support structure includes at least two positioning support blocks (27). The positioning support blocks (27) of the upper and lower layers are not located on the same vertical plane.

10. A servo motor stator and rotor dual-section assembly device according to claim 1, characterized in that, The end of the positioning pin (16) is conical and the tip is placed downwards.

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