A Die Surface Compensation Method for the Thinning of Automobile Body Outer Panels

An outer cover, thickness reduction technology, applied in vehicle parts, forming tools, manufacturing tools, etc., can solve the problems of difficult control of mold quality and debugging cycle, high labor intensity of fitters, etc. The effect of reducing workload and shortening debugging cycle

Active Publication Date: 2020-08-21
CHINA FIRST AUTOMOBILE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Usually, the time for mold research and matching and blue oil inspection occupies a large proportion in the entire mold debugging cycle. The cycle is not easy to control

Method used

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  • A Die Surface Compensation Method for the Thinning of Automobile Body Outer Panels
  • A Die Surface Compensation Method for the Thinning of Automobile Body Outer Panels
  • A Die Surface Compensation Method for the Thinning of Automobile Body Outer Panels

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Embodiment Construction

[0026] Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

[0027] The product model of a car fender is as follows: image 3 As shown, the theoretical design thickness of the part is 1.1mm, and the material is 6014-T4 aluminum alloy plate. In the Autoform software, the simulation of the drawing process is carried out according to the content of the stamping process, and the cloud map of the thickness distribution of the drawn part after forming is obtained, as shown in Figure 4 As shown, there is uneven thickness reduction in the A-level curved surface area, and it is necessary to compensate for the thickness reduction of the mold surface. The steps are as follows:

[0028] The first step is to obtain the fender compensation benchmark grid data, the sub-steps are:

[0029] (1) Adjust the fender forming process in the Autoform software to the drawing end time node, and export the upper and lower surface grids of the...

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Abstract

The invention provides a die profile surface compensation method for thickness reduction of an automotive body outer cover piece, and belongs to the technical field of die designing and manufacturing.The invention aims to provide a die surface design method capable of reducing working amount on grinding for a bench worker and improving coloring rate. According to the method, firstly compensated reference grid data should be acquired, and then compensation for thickness reduction on an A-grade curved surface should be carried out through combining functions of an OmniCAD software and a CATIA software. The practice proves that, by adopting the method, the working amount on grinding for the bench worker is reduced, the coloring rate on the A-grade curved surface of the automotive body outercover piece is improved, and die debugging periods are shortened.

Description

technical field [0001] The invention belongs to the technical field of mold design and manufacture. Background technique [0002] The automobile outer cover is mainly composed of two parts: the A-level curved surface area and the structural surface area. The A-level curved surface area mainly refers to the exposed outer surface of the body after assembly, while the structural surface area mainly refers to the hidden inside of the body after assembly. Areas where other parts overlap, such as figure 1 shown. Automobile outer panels are mainly manufactured by die stamping, and the forming quality of the A-level curved surface area determines the appearance quality of the automobile. In the manufacturing of traditional automobile outer panel molds, the gap between the upper and lower mold surfaces is designed according to the initial sheet thickness before the parts are formed. However, in the actual drawing forming process of the sheet metal, the phenomenon of thickness redu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D37/20B21D22/20B21D53/88
CPCB21D22/20B21D37/20B21D53/88
Inventor 王刚张健闫巍
Owner CHINA FIRST AUTOMOBILE
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