Punch process of integral automobile metal bumper

A bumper and automobile technology, applied in the field of stamping, can solve the problems of complex shape of metal bumper, poor product appearance, cumbersome stamping process, etc., and achieve the effect of shortening the debugging cycle, reasonable process design, and reducing the difficulty of forming.
CN1887466AInactive Publication Date: 2007-01-03CHINA NATIONAL HEAVY DUTY TRUCK GROUP
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA NATIONAL HEAVY DUTY TRUCK GROUP
Publication Date
2007-01-03
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The present invention discloses the punch process of integral automobile metal bumper with the advantages of low cost for mold, short production period, high product surface quality, etc. The punch process includes the steps of once drawing to form drawn ribs on two ends of bumper; trimming edge and punching hole; shaping and flanging; punching hole, trimming bevel edge and cutting tongue; re-punching hole, trimming bevel edge and punching side hole.
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Description

technical field

[0001] The invention belongs to the technical field of stamping, and in particular relates to a stamping process of an integral automobile metal bumper. Background technique

[0002] The existing heavy-duty automobile bumper is an appearance part, and its quality directly affects the quality of the automobile. Metal bumpers generally have complex shapes, large drawing depths, and thick materials, generally between 1.5-2.5mm. It is difficult to form and must be processed with molds. The existing stamping process is relatively cumbersome, generally 6 processes, 6 Set of molds, poor product appearance quality, high production cost, low product yield, resulting in greater waste. Contents of the invention

[0003] Aiming at the deficiency of the stamping process of the current metal bumper, the present invention proposes a stamping process of the overall automobile metal bumper, which has the advantages of saving mold costs, saving production man-hours, high su...

Claims

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