Bracket body cold press forming process

Abstract

The invention discloses a cold press molding process for a carrier body. The cold press molding process is characterized by comprising the following process steps of a, performing fixed-length blanking on a seamless steel tube; b, reducing the diameter of one end of the seamless steel tube; c, bending the tube; d, necking down one end of the seamless steel tube; and e, performing local flattening forming on the wall of the seamless steel tube in a forming mold, and filling the interior of the seamless steel tube with steel balls during flattening forming and blocking the two ends movably. According to the cold press molding process for the carrier body, the carrier body is subjected to cold press molding through the seamless steel tube, the process is simple, and the molded carrier body is high in strength, low in cost, high in size accuracy and attractive in appearance.

Description

technical field [0001] The invention relates to an automobile bracket used in an automobile chassis suspension system, in particular to a cold-press forming process of the automobile bracket body. Background technique [0002] The car bracket is used in the suspension system of the car chassis. The bracket body of the car bracket is a metal part. It is generally made by welding. The cost is high, the welding area is large, and the thermal deformation caused by welding is also large. Therefore, the installation size The precision is not high, the shape quality is poor, and the strength of the product is not high. If the bracket body is made by cold pressing of steel pipes, the technical problem is that in the final partial flattening of steel pipes, only fine sand can be filled into the inner cavity of the steel pipes. The fine sand has poor fluidity, and the steel pipes require partial The flattened deformation space is large, so the local flattened parts of the steel pipe ...

AI Technical Summary

Problems solved by technology

[0002] The car bracket is used in the suspension system of the car chassis. The bracket body of the car bracket is a metal part. It is generally made by welding. The cost is high, the welding area is large, and the thermal deformation caused by welding is also large. Therefore, the installation size The precision is not high, the shape quality is poor, and the strength of the product is not high

If the bracket body is made by cold pressing of steel pipes, the technical problem is that in the final partial flattening of steel pipes, only fine sand can be filled into the inner cavity of the steel pipes. The fine sand has poor fluidity, and the steel pipes require partial The flattened deformation space is large, so the local flattened parts of the steel pipe are often not formed well, either the forming is too flat or the forming is not in place, the product installation size accuracy is low, the shape quality is poor, and the product consistency is also poor

Therefore, steel pipe cold forming process is rarely used

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