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.

Inactive Publication Date: 2007-01-03
CHINA NATIONAL HEAVY DUTY TRUCK GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

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 cumbersome, generally 6 processes, 6 set of molds, poor product appearance quality, high production cost, low product yield, resulting in large waste

Method used

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  • Punch process of integral automobile metal bumper
  • Punch process of integral automobile metal bumper
  • Punch process of integral automobile metal bumper

Examples

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0019] Figure 1-Figure 5 This is the process diagram of the stamping process.

[0020] First, proceed figure 1 In the drawing process of the bumper, due to the large warpage height at both ends of the bumper, process supplements are added at both ends, and drawbeads 1 are added around the periphery, which greatly improves the formability and greatly reduces the difficulty of forming. Then carry out the trimming and punching process, such as figure 2 As shown, punch holes 3 at both ends and the middle of the drawn bumper, and at the same time carry out special-shaped punching 4 in the middle; cut off the redundant process waste outside the drawn bead 1, and trim the edge along the trimming contour line 2 . proceed image 3 The shaping and flanging process combines the shaping process and the flanging process through the mold, and the side, end and...

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PUM

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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.

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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D35/00B21D22/20B21D28/24B21D28/02B21D19/12
Inventor 李相伟付磊
Owner CHINA NATIONAL HEAVY DUTY TRUCK GROUP
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