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Plane hook shaped reverser integral cold-forging processing method

A processing method and commutator technology are applied in the field of cold forging to achieve the effects of less equipment occupation, high material utilization rate and good wear resistance.

Inactive Publication Date: 2010-03-17
NANCHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to adopt the cold pressing precision forming method for the existing production process of the plane hook commutator, so as to overcome the shortcomings of the existing extrusion end face and other manufacturing methods mainly based on cutting processing, and directly adopt the cold extrusion process Form a whole copper shell of a plane hook commutator with separate claws, and process a plane hook commutator as a whole

Method used

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  • Plane hook shaped reverser integral cold-forging processing method
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Examples

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Embodiment Construction

[0013] The present invention will be further illustrated by the following examples.

[0014] Examples.

[0015] An eight-piece claw type plane hook commutator. First prepare a washer-shaped blank, Picture 1-1 ), the billet is directly placed in the cold extrusion die for extrusion, and the whole copper shell can be obtained Figure 1-2 ), eight of the claws are simultaneously extruded at their separate positions, and then resin is injected, and the claws are bent into a hook shape, and then the plate end face milling and other conventional processes can be processed into a flat hook shape commutator.

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Abstract

The invention is a kind of integral cold-forging process method for plane hook reverser, which includes performing, cold-extruding, pressure resin, hook, milling slot etc. processes. The character lies in: the one-time cold-press forming has a whole copper shell which has several claws, the invention uses cold-pressure fine molding method, overcomes the deficiencies of current method, the invention uses cold-extruding process to form out the integral copper shell of plane hook reverser whose piece and claws are separated, the process is little, the appliance is little, the operation is easy. The lifespan of the product is long.

Description

Technical field [0001] The invention belongs to the technical field of motor commutator production, and relates to cold forging (mainly cold extrusion) technology in metal plastic forming technology. Background technique [0002] The motor commutator is made of several copper commutator pieces, embedded with several mica pieces and pressed with phenolic resin. It is a component with a copper shell (cylindrical or disc as the main body). At present, most of its production technology is to use commutator segments to process them separately, and then combine them to form commutator products. The Chinese Invention Patent Bulletin discloses a patent application for "a method for manufacturing a cold-extruded end-face commutator and its products" (publication number CN1391319A), and proposes a method for integral processing of a flat hook commutator, but its Only a part of the end face is extruded, and multiple processes such as internal and external turning, milling out of the hook a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P23/04B21C23/00H01R43/06
Inventor 卢险峰闵水根张如华褚亮
Owner NANCHANG UNIV