Plastic-flow connector and its connecting method

Abstract

The disclosure is concerned with a bonding method for bonding metallic members, which comprises the steps of: fitting a metallic members to another metallic member, followed by effecting preliminarily plastic bonding by means of a preliminarily bonding punch; and generating compression force in an axial direction of the members in the vicinity of the fitting portion of the bonding members after the preliminarily plastic bonding, and allowing part of the material of the bonding member to effect plastic-flow in such a manner as to fill a gap defined between the metallic members, so as to plastically bond the members; whereby the members are tightly integrated with each other.

Description

technical field [0001] The invention relates to a combination method and combination body for combining two components by plastic flow. Background technique [0002] A conventional method of fitting and plastic-flow joining two members employs a method of plastic-flow joining the two members in a state of clearance fit (for example, refer to Patent Document 1). [0003] In addition, a conventional method of fitting and plastic-flow joining two members uses a method of press-fitting and plastic-flow joining two members (for example, refer to Patent Document 2). [0004] 【Patent Document 1】 [0005] Japanese Patent Application Laid-Open No. 11-120743 (page 4, image 3 , Figure 4 ) [0006] 【Patent Document 2】 [0007] Japanese Patent Laid-Open No. 2001-54268 (page 2, figure 1 ) [0008] In the bonding method described in the above-mentioned Patent Document 1, since the plastic flow bonding is performed after the two members are fitted with a clearance fit, the other po...

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Problems solved by technology

[0008] In the bonding method described in the above-mentioned Patent Document 1, since the plastic flow bonding is performed after the two members are fitted with a clearance fit, the other portions except for the vicinity of the portion that was pressed and plastically flowed become strictly gaps. , the bonding strength is weak especially for bending, and it becomes a problem especially when the thin plate members are pushed to make plastic flow for bonding

[0009] In addition, in the bonding method described in Patent Document 2, since the plastic flow bonding is performed after the two members are press-fitted, although there is no gap in the vicinity of the pressed and plastic-flowed part, the bonding strength is especially for The bonding strength of bending is strong, but when press-fitting, it is easy to cause friction or bite on the two members, and bending or contamination due to press-fitting occurs (Contami)

In addition, in order to manage the press-fit allowance, high part accuracy is required, which increases the cost

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