Processing method for automobile-chassis elliptical welded tube fitting

Abstract

The invention discloses a processing method for an automobile-chassis elliptical welded tube fitting. Processing is carried out through a cold header; the processing method mainly includes the following steps that S1, a wire is cut to be at the required length through a cutting tool of the cold header, and a cut product is obtained; S2, the two ends of the product are pressed into a deep hole anda positioning hole through a mold of the cold header respectively, and both the deep hole and the positioning hole are elliptical; S3, the portion between the deep hole and the positioning hole is punched, and generated waste is removed; then a molded welding spot and chamfers on the two end faces are processed. By accurately designing the size of a mold, designing the size of the workblank wire,designing related spare and accessory parts, prejudging metal forming flowing and the like, processing manufacturing of an elliptical special-shaped piece on the cold header is achieved accordingly, limiting of the shape and the size of the welded tube fitting is broken through, and diversification of chassis parts is promoted.

Description

technical field [0001] The invention relates to a processing and manufacturing process for automobile chassis parts, in particular to a processing method for an automobile chassis elliptical welded pipe fitting. Background technique [0002] At present, the processing technology of elliptical welded pipe fittings in the automobile industry is still immature, and there are mainly difficulties in several aspects: 1. The shape is special, and the inside and outside of the product are oval; 2. It is formed by machining, which takes a long time and is difficult to process; 3. 1. Extrusion molding is used, and the mold needs to take into account the molding size, processing accuracy and size matching of the mold, which is prone to deviation, which directly affects the assembly and product molding; 4. Since the traditional round wire cannot be used, it is necessary to redevelop the extrusion mold and Cold heading machine accessories. Contents of the invention [0003] The purpos...

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Problems solved by technology

[0002] At present, the processing technology of elliptical welded pipe fittings in the automobile industry is still immature, and there are mainly difficulties in several aspects: 1. The shape is special, and the inside and outside of the product are oval; 2. It is formed by machining, which takes a long time and is difficult to process; 3. 1. Extrusion molding is used, and the mold needs to take into account the molding size, processing accuracy and size matching of the mold, which is prone to deviation, which directly affects the assembly and product molding; 4. Since the traditional round wire cannot be used, it is necessary to redevelop the extrusion mold and Cold heading machine accessories

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