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Method for forming tail door inner plate die surface

A technology of surface forming and plate mold, which is applied in the field of surface forming of tailgate inner plate mold, can solve the problems of large surface defects, achieve the effect of reducing the size of the blank and improving the utilization rate of materials

Active Publication Date: 2014-07-02
ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition to drawing forming, trimming, punching and other processes are easy to solve, but the surface defects formed during drawing forming have always been the biggest problem

Method used

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  • Method for forming tail door inner plate die surface
  • Method for forming tail door inner plate die surface
  • Method for forming tail door inner plate die surface

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Embodiment Construction

[0021] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0022] The wrinkle-prone parts mentioned in the present invention refer to the parts that are wrinkled in the existing technology or production process, such as the lower corners of the inner and outer panels of the door, and the front ends of the upper pillars on the side wall. This part belongs to the main defect in the actual production , those skilled in the art all understand the problem of this position.

[0023] The remaining meat mentioned in the present invention refers to the accumulation formed at the bend after bending relati...

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Abstract

The invention relates to a die surface for controlling surface wrinkling when an automobile panel tail door inner plate is drawn to form. Specifically, the corresponding technological complement of an easy wrinkling position is made to form a 'residual part' characteristic; the corresponding technological complement of the easy wrinkling position adopts 'semi-opening' drawing; and a novel parting line mode is adopted, a panel veneer is reversely tensioned to control the panel veneer moving. The die surface well controls the wrinkling degree, the blank size is reduced, and the material utilization rate is greatly improved.

Description

technical field [0001] The patent relates to a mold surface for controlling surface wrinkling during drawing forming of an inner panel of a tailgate of an automobile cover, especially a method for forming a mold surface of an inner panel of a tailgate. Background technique [0002] In the car structure, the body-in-white is the main component of the car, accounting for more than 70% of the body weight. The accuracy of the covering parts is the main guarantee for the accuracy of the body-in-white. How to obtain the outer covering parts with high precision and good surface quality has become an important research topic in the automotive industry. [0003] The forming process of automobile panels generally has four procedures, and surface quality defects may occur in any one of the procedures. In addition to drawing forming, trimming, punching and other processes are easy to solve, but the surface defects formed during drawing forming have always been the biggest problem. For...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D25/00
Inventor 韩永志
Owner ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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