Machining process of protective ring for traction motor

Abstract

The invention relates to a machining process of a protective ring for a traction motor. The machining process comprises the following steps of step 1, rough turning: taking an annular blank, performing rough turning on an excircle, an inner hole and an end surface, and leaving a margin unilateral edge for 1.5mm; step 2, taking an annular clamping jaw, clamping the blank inner hole through the annular clamping jaw, leveling the end surface, turning the excircle, and leaving a margin unilateral edge for 0.5mm; step 3, clamping the blank excircle through the annular clamping jaw, leveling the endsurface, turning the inner hole, and leaving a margin unilateral edge for 0.5mm; step 4, clamping the blank excircle through the annular clamping jaw, leveling the end surface, turning the inner hole, nd leaving a margin unilateral edge for 0.25mm; step 5, clamping the blank excircle through the annular clamping jaw, leveling the end surface, turning the inner hole, and leaving a margin unilateral edge for 0.25mm; step 5, taking a pressure plate, compressing the end surface of the blank through the pressure plate, and performing finish turning on the excircle; and step 7, clamping the blank excircle through the annular clamping jaw, compressing the end surface of the blank through the pressure plate, and performing finish turning on the inner hole. The machining process of the protectivering for the traction motor can effectively protect the processing quality of the protective ring.

Description

technical field [0001] The invention relates to a mechanical processing technology of a retaining ring for a traction motor, belonging to the technical field of rail transportation. Background technique [0002] The new type of traction motor uses 50Mn18Cr5 magnetic isolation material as the guard ring. This material has poor thermal conductivity, is easy to deform, and is hard to cut due to its red hardness. figure 1 It is a schematic diagram of the structure of this kind of retaining ring. Its structure is simple in shape and difficult to process. It is mainly a thin-walled part. Therefore, it is necessary to overcome the problems of excessive dimensional accuracy and shape accuracy caused by deformation. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a machining process for a retaining ring for a traction motor in view of the above prior art, which can effectively ensure the processing quality of the retainin...

AI Technical Summary

Problems solved by technology

[0002] The new type of traction motor uses 50Mn18Cr5 magnetic isolation material as the retaining ring. This material has poor thermal conductivity, is easy to deform, and is red and hard and not suitable for cutting.

figure 1 It is a schematic diagram of the structure of this kind of retaining ring. Its structure is simple in shape and difficult to process. It is mainly thin-walled parts. Therefore, it is necessary to overcome the problems of excessive dimensional accuracy and shape accuracy caused by deformation.

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