How to make a magnetic pole of a motor

Abstract

The invention provides a motor magnetic pole manufacturing method and belongs to the technical field of motors. The problems that existing motor magnetic pole machining is high in cost and low in production efficiency are solved. A magnetic pole comprises a pole shoe which is in a circular arc sheet shape, and a pole core located on the middle portion of a convex surface of the pole shoe. The motor magnetic pole manufacturing method comprises the following sequential steps that firstly, a billet is selected; secondly, preforming is performed, specifically, the billet is placed into a first cold extruding die to be subjected to cold extrusion, and the billet is preformed to be a preformed component; thirdly, forming is performed, specifically, the preformed component is placed into a secondcold extruding die to be subjected to cold extrusion, and the preformed component is formed to be a formed component; and fourthly, side cutting is performed, specifically, scrap portions of the formed component are cut off to obtain the magnetic pole. According to the motor magnetic pole, the method that the pole core is subjected to cold extrusion forming firstly and then the pole shoe is subjected to cold extrusion forming is adopted, the pole shoe forming precision and the pole shoe portion metal structure density uniformity are effectively guaranteed, and accordingly, it is effectively guaranteed that motor magnetic fields are distributed uniformly.

Description

technical field [0001] The invention belongs to the technical field of motors, and relates to a magnetic pole of a motor, in particular to a method for manufacturing a magnetic pole of a motor. Background technique [0002] The magnetic pole is one of the important parts of the excitation motor, and there are many relevant literatures about the excitation motor, such as the DC motor (public number CN1805250A). [0003] Such as Picture 1-1 It is a magnetic pole. The main process in the existing magnetic pole manufacturing method is to firstly use the continuous casting method to make rods. The cross-sectional shape and size of the rods are consistent with the cross-sectional shape and size of the magnetic poles; then cut according to the length of the magnetic poles. ,Such as figure 2 shown; final drilling, chamfering and tapping. The existing magnetic poles have the following disadvantages: 1. The size of the magnetic poles processed by different batches of bars varies g...

AI Technical Summary

Problems solved by technology

The existing magnetic poles have the following disadvantages: 1. The size of the magnetic poles processed by different batches of bars varies greatly, which in turn affects the distribution of the magnetic field; 2. The position accuracy of the threaded holes is insufficient, especially when there are two threaded holes, the position Insufficient precision makes it difficult to install the magnetic pole; 3. It is not suitable for processing such as Figure 1-2 The poles of the structure shown

[0004] In order to solve the above technical problems, those skilled in the art can think of using CNC machine tools to carry out subsequent processing on the blank cut from the bar, but there are problems of high processing cost and low production efficiency

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