Method for punching stator and rotor sheets

A technology of rotor punching and stator punching, which is applied in the manufacture of stator/rotor body, etc., which can solve problems such as labor-consuming and time-consuming cleaning, increased core loss, and adverse effects on motor performance.

Active Publication Date: 2010-05-05
上海电气集团上海电机厂有限公司
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  • Summary
  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

However, this way of avoiding the problem will cause the coil insulation layer to be easily damaged by the sharp-edged notch when inserting the wire in the subsequent process, which will affect the final quality of the entire motor
[0004] In addition, there is another way to grind the notch into rounded corners after the iron core is laminated in the post-process. The performance of the motor is adversely affected

Method used

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  • Method for punching stator and rotor sheets
  • Method for punching stator and rotor sheets

Examples

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Embodiment Construction

[0013] Please refer to figure 1 , the punching stator of the present invention, the method for rotor stamping, utilize same stator cutting punching die earlier on a piece of wafer 100 along the circumferential direction to flush away stator groove shape waste material 201 and cutting waste material 202 simultaneously successively. After the groove-shaped waste 201 is washed away, the stator groove 301 with a rounded notch angle 302 is formed successively, and the washed-off slitting waste 202 is formed between adjacent stator grooves 302 along the inner circle edge of the stator punching sheet 300 301 is cut and has a certain radial width, which can be determined according to the air gap size requirements of the stator and the rotor. What is shown in the figure is that when a stator slot-shaped scrap 201 is washed away, the cutting scrap 202 separated by a stator slot-shaped size is washed away. At this time, the slitting waste 201 washed away is washed down from the wafer 10...

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PUM

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Abstract

The invention relates to a method for punching stator and rotor sheets, which comprises the following processes: punching stator slot forms with round notch angles one by one on a wafer along a circumferential direction until stator sheets are punched from the wafer and rotor stocks are punched down from the inside of the stator sheets; and then punching rotor slot forms and excircles one by one on the rotor stocks along the circumferential direction until rotor sheets are formed, wherein splitting scraps with sharp angles and radial width between the adjacent stator slot forms are sequentially punched off along the inner circle sidelines of the stator sheets when the stator slot forms are punched on the wafer one by one, so that the sharp angles and the splitting scraps are separated to keep no sharp angles on the finally punched rotor stocks. The method for punching stator and rotor sheets can avoid generating metal scraps, and improve the quality and the punching efficiency of the rotor sheets.

Description

technical field [0001] The invention belongs to the technical field of motors, and relates to a method for manufacturing a stator and a rotor in a motor, in particular to a method for punching out a stator and a rotor on a disc. Background technique [0002] In the manufacture of motor stators and rotors, the stator and rotor are punched out on a wafer. In order to avoid damage to the insulation layer of the coil by the stator notch when inserting the wire in the subsequent process, when designing the stator punching structure, the notch angle at the stator notch is required to be rounded. However, in the existing method of punching stator and rotor sheet, after the corners of stator slots are rounded, there are redundant small sharp corners left on the outer circle of the punched rotor blank, the number of which is consistent with the number of stator slots. However, because the number of slots in the stator and rotor is not always the same, when the rotor cuts the outer c...

Claims

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Application Information

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IPC IPC(8): H02K15/02
Inventor 张帆詹顺余唐群花
Owner 上海电气集团上海电机厂有限公司
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