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Open-contraction brake block rivet and production method thereof

A technology for brake pads and rivets, which is applied to rivets, connecting components, etc., can solve the problems of reducing the quality risk of rivets, unable to feed materials normally, etc., and achieves the effects of simple structure, reduced scrap rate, and stable product forming.

Inactive Publication Date: 2013-02-13
SANMEN TONGSHUN RIVET
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a brake pad rivet with necking and a brake pad rivet that can not only solve the problem that the material cannot be fed normally during assembly, but also save the processing cost of the original machining chamfer, and further reduce the quality risk of the rivet in use. its production method

Method used

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  • Open-contraction brake block rivet and production method thereof
  • Open-contraction brake block rivet and production method thereof
  • Open-contraction brake block rivet and production method thereof

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Embodiment Construction

[0015] Below in conjunction with accompanying drawing, the present invention will be further described with specific embodiment, see figure 1 —3:

[0016] The shrinking brake pad rivet includes a head 1 and a shaft 2, the head and the shaft are integrally connected, the head and the shaft are provided with an axial through hole 3 formed by cold heading and drilling, the The end of the shaft is provided with a tapered portion 4 formed by cold extrusion and chamfering. The common machining chamfering treatment is easy to cause burrs on the surface of the part. If the thickness of the hollow rivet wall is too thin, the chamfering treatment will easily make the rivet scrapped directly. Therefore, the use of cold extrusion can enhance the strength of the rivet and reduce the processing time. Scrap rate.

[0017] The above-mentioned head has a frusto-conical shape with a through hole.

[0018] As a second embodiment of the structure of the present invention, the above-mentioned h...

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Abstract

The invention provides an open-contraction brake block rivet and a production method thereof and belongs to the technical field of rivets. The rivet and the method resolve the problem that normal feeding of the existing brake block rivets cannot be conducted in assembly due to lack of chamfer structure, or the rivets are disqualified in batch caused by burrs and the like. The rivet comprises a head portion and a rod body which are integrally connected. Axial through holes formed by cold heading and punching are arranged on the head portion and the rod body, and a conical portion formed by cold extruding chamfering processing is arranged on at the end of the rod body. The production method of the rivet includes the following step: 1 material tampering: delivering material bases with designated length to the below of a punch which punches the rivet and for axial through holes; and 2 cold extruding: utilizing a cold extruding mould to conduct cold extruding chamfering processing on the rivet rod end to form the conical portion. The rivet has the advantages of being simple in structure and stable in product formation, reducing scrappage and the like.

Description

technical field [0001] The invention belongs to the technical field of rivets, in particular to a shrinking brake pad rivet. Background technique [0002] As a special rivet part, the shrinking brake pad rivet is used in the accessories of the automobile industry. Because the original brake pad rivet has no chamfer structure, it cannot be fed normally during assembly, or there are burrs, resulting in batch failure. When improving this structure, many manufacturers in the same industry often solve the problem by machining chamfering, but for brake pad rivets with a thinner thickness, it is impossible to realize the problem of chamfering and bad material after processing. Contents of the invention [0003] The purpose of the present invention is to provide a brake pad rivet with necking and a brake pad rivet that can not only solve the problem that the material cannot be fed normally during assembly, but also save the processing cost of the original machining chamfer, and fu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16B19/08B21K1/58
Inventor 郑士旺
Owner SANMEN TONGSHUN RIVET
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