Polishing treatment equipment for motor rotor iron core
By combining electromagnets and limiting rings, the problem of rotor core displacement caused by uneven force during polishing was solved, achieving stable polishing of the rotor core and improving polishing efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HENAN AOTIAN ELECTROMECHANICAL TECH CO LTD
- Filing Date
- 2025-04-23
- Publication Date
- 2026-05-19
AI Technical Summary
Existing motor rotor core polishing equipment is prone to core displacement due to uneven force during clamping, which affects polishing efficiency.
The rotor core is fixed by a combination of electromagnet adsorption and a limiting ring. It is then secured in the polishing box by a telescopic mechanism to prevent displacement, and polishing is performed using polishing equipment.
This improves the stability of the rotor core, ensuring the stability and efficiency of the polishing process.
Smart Images

Figure CN224255023U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of motor manufacturing technology, specifically to a motor rotor core polishing equipment. Background Technology
[0002] After the rotor core of an electric motor is stamped out, it needs to be polished to reduce the surface roughness and obtain a bright and smooth surface. Generally, polishing tools and abrasive particles or other polishing media are used to modify the surface of the workpiece. However, some existing polishing equipment uses two clamps to hold the core upright and polish both sides of the core. However, this method is prone to displacement due to uneven force on the core, resulting in polishing failure and delaying polishing efficiency. Therefore, this application proposes a polishing equipment that can improve the stability of the core. Utility Model Content
[0003] To address the shortcomings of existing technologies, this invention provides a polishing device for motor rotor cores, which facilitates the improvement of core stability.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a motor rotor core polishing device, comprising a worktable, a polishing box with a discharge pipe at the bottom on the worktable, coaxial through slots on the front and rear sides of the polishing box, a first telescopic mechanism coaxial with the through slots on the front side of the worktable via a first support rod, a polishing device at one end of the first telescopic mechanism, and a second telescopic mechanism coaxial with the through slots on the rear side of the worktable via a second support rod, an electromagnet at the end of the second telescopic mechanism facing the polishing box.
[0005] Preferably, the polishing box is provided with a limiting ring coaxial with the through groove via a third support rod.
[0006] Preferably, the polishing box is hinged to the top with an opening and closing door, and a handle is provided on the opening and closing door.
[0007] Preferably, the door is provided with an iron block, and the polishing box is provided with a magnet.
[0008] Preferably, the workbench is provided with a guide trough located below the discharge pipe.
[0009] This utility model provides a polishing equipment for motor rotor cores, which has the following beneficial effects:
[0010] This motor rotor core polishing equipment uses an electromagnet to tightly attract the rotor core, improving its stability. With the cooperation of a limiting ring, it can prevent the rotor core from shifting. During use, it can improve the stability of the core, which is beneficial for the polishing equipment to polish it and improve the polishing efficiency. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the structure of this utility model;
[0012] Figure 2 This is a top view of the structure of this utility model;
[0013] Figure 3 This is a cross-sectional structural diagram of the polishing box of this utility model.
[0014] In the diagram: 1. Workbench; 2. Discharge pipe; 3. Polishing box; 4. Through groove; 5. First support rod; 6. First telescopic mechanism; 7. Polishing equipment; 8. Second support rod; 9. Second telescopic mechanism; 10. Electromagnet; 11. Third support rod; 12. Limiting ring; 13. Opening and closing door; 14. Handle; 15. Iron block; 16. Magnet; 17. Guide trough. Detailed Implementation
[0015] The present invention will be further described below with reference to specific embodiments, such as... Figures 1 to 3 As shown:
[0016] Example 1: A polishing equipment for motor rotor core, including a workbench 1, and a polishing box 3 with a discharge pipe 2 at the bottom on the workbench 1. The polishing debris is discharged from the polishing box 3 through the discharge pipe 2.
[0017] Coaxial through slots 4 are provided on the front and rear sides of the polishing box 3. A first telescopic mechanism 6 coaxial with the through slots 4 is provided on the front side of the worktable 1 via a first support rod 5. A polishing device 7 is provided at one end of the first telescopic mechanism 6.
[0018] A second telescopic mechanism 9, coaxial with the through groove, is provided on the rear side of the workbench 1 via the second support rod 8. An electromagnet 10 is provided at one end of the second telescopic mechanism 9 facing the polishing box 3.
[0019] The telescopic ends of the first telescopic mechanism 6 and the second telescopic mechanism 9 are both set towards the polishing box 3;
[0020] The rotor core is attracted to the electromagnet 10, and then the second telescopic mechanism 9 drives the electromagnet 10 to send the rotor core to the polishing box 3. Then the first telescopic mechanism 6 sends the polishing equipment 7 to the polishing box 3, so that the rotor core is polished and ground in the polishing box 3 by the polishing equipment 7.
[0021] Example 1: A polishing equipment for motor rotor core, including a workbench 1, and a polishing box 3 with a discharge pipe 2 at the bottom on the workbench 1. The polishing debris is discharged from the polishing box 3 through the discharge pipe 2.
[0022] The workbench 1 is provided with a guide chute 17 located below the discharge pipe 2; through the setting of the guide chute 17, after the material is discharged from the polishing box 3, the material can be discharged from the workbench 1 through the guide chute 17.
[0023] The polishing box 3 is hinged to the top of the door 13, and a handle 14 is provided on the door 13 to facilitate cleaning the debris inside the polishing box 3.
[0024] An iron block 15 is provided on the opening and closing door 13, and a magnet 16 is provided on the polishing box 3. After the magnet 16 and the iron block 15 are attracted, the debris is prevented from splashing out of the polishing box 3 as much as possible.
[0025] Coaxial through slots 4 are provided on the front and rear sides of the polishing box 3. A first telescopic mechanism 6 coaxial with the through slots 4 is provided on the front side of the worktable 1 via a first support rod 5. A polishing device 7 is provided at one end of the first telescopic mechanism 6.
[0026] A second telescopic mechanism 9, coaxial with the through groove, is provided on the rear side of the workbench 1 via the second support rod 8. An electromagnet 10 is provided at one end of the second telescopic mechanism 9 facing the polishing box 3.
[0027] The telescopic ends of the first telescopic mechanism 6 and the second telescopic mechanism 9 are both set towards the polishing box 3;
[0028] The polishing box 3 is provided with a limiting ring 12 coaxial with the through groove 4 via the third support rod 11. The second telescopic mechanism 9 can move the rotor core into the limiting ring 12, so that the limiting ring 12 can limit it and prevent the rotor core from deviating on the electromagnet 10 as much as possible.
[0029] The upper side of the limiting ring 12 is provided with a square groove, which makes it convenient for staff to watch the polishing equipment 7 and the rotor core polishing process.
[0030] The rotor core is attracted to the electromagnet 10. Then the second telescopic mechanism 9 drives the electromagnet 10 to send the rotor core to the polishing box 3. Then the first telescopic mechanism 6 sends the polishing equipment 7 to the polishing box 3, so that the rotor core is polished and ground in the polishing box 3 by the polishing equipment 7.
[0031] Two horizontal plates inserted into the first support rod 5 are provided on the lower side of the polishing equipment 7 to provide support for the polishing equipment 7.
[0032] Working principle:
[0033] The rotor core to be polished is placed on the electromagnet 10 and held in place by the electromagnet 10. The second telescopic mechanism 9 moves it into the limiting ring 12 of the polishing box 3 and limits it by the limiting ring 12. Then, the first telescopic mechanism 6 moves the polishing equipment 7 to the position where the polishing disc contacts the rotor core, which is convenient for polishing the rotor core. The degree of contact between the polishing disc and the rotor core can be seen through the square groove on the limiting ring 12. After polishing, the generated debris is discharged into the guide trough 17 through the discharge pipe 2. The guide trough 17 is set at an angle to facilitate material discharge.
[0034] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A polishing device for motor rotor cores, comprising a workbench (1), characterized in that: The workbench (1) is provided with a polishing box (3) with a discharge pipe (2) at the bottom. Coaxial through slots (4) are provided on the front and rear sides of the polishing box (3). A first telescopic mechanism (6) coaxial with the through slot (4) is provided on the front side of the workbench (1) via a first support rod (5). A polishing device (7) is provided at one end of the first telescopic mechanism (6). A second telescopic mechanism (9) coaxial with the through slot is provided on the rear side of the workbench (1) via a second support rod (8). An electromagnet (10) is provided at one end of the second telescopic mechanism (9) facing the polishing box (3).
2. The motor rotor core polishing equipment according to claim 1, characterized in that: The polishing box (3) is provided with a limiting ring (12) coaxial with the through groove (4) via the third support rod (11).
3. The motor rotor core polishing equipment according to claim 1, characterized in that: The polishing box (3) is hinged to the top of a door (13), and a handle (14) is provided on the door (13).
4. The motor rotor core polishing equipment according to claim 3, characterized in that: The opening and closing door (13) is provided with an iron block (15), and the polishing box (3) is provided with a magnet (16).
5. The motor rotor core polishing equipment according to claim 1, characterized in that: The workbench (1) is provided with a guide trough (17) located below the discharge pipe (2).