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Method for compensating surface product defects of automobile outer covering part

A technology of outer cover and compensation method, which is applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problems of high cost and long rectification time, so as to improve the quality of noodle products, reduce the workload of training, shorten the The effect of the debug cycle

Inactive Publication Date: 2020-09-18
CHINA FIRST AUTOMOBILE +1
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Problems solved by technology

At present, the main method for rectifying the defects of noodle products is that the fitter conducts manual training on the punch corresponding to the position of the defect according to the subjective detection results, and when the degree of defect of noodle products is too large, it may even require CNC milling and milling of the mold surface. The final mold surface still needs to be re-studied manually, which takes a long time and costs a lot

Method used

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  • Method for compensating surface product defects of automobile outer covering part
  • Method for compensating surface product defects of automobile outer covering part
  • Method for compensating surface product defects of automobile outer covering part

Examples

Experimental program
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Embodiment

[0063] The door panel product model of a car is as follows: figure 2 As shown, according to the model, after the stamping process design is completed, surface product defects need to be compensated, and the specific steps are as follows:

[0064] The first step is to obtain the analysis results of surface product defects before compensation, and the sub-steps are:

[0065] (1) Finite element analysis of product defects before compensation: Construct surface product defect analysis files in the plate forming finite element analysis software Autoform. Among them, the material parameters are shown in Table 1, and the tool and sheet mesh size parameters are shown in Table 2.

[0066] Table 1 Material parameters of a certain car door panel

[0067]

[0068] Table 2 Tools and sheet metal grid size parameters

[0069]

[0070] (2) Evaluation of product defect results before compensation: Use the Surface command in the Evaluation of Autoform software to perform quantitative ...

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Abstract

The invention discloses a method for compensating stamping surface product defects of an automobile outer covering part. Firstly, obtaining a surface product defect analysis result before compensationby adopting plate forming finite element analysis software; compensating the molded surface of the product on the premise that the quality of the curved surface is not changed; outputting a compensated molded surface meeting the quality requirement of a surface product; importing the profile compensated by the plate forming finite element analysis software into Catia software; and comparing withthe product profile before compensation to form a surface product defect compensation amount reference cloud picture, and compensating the original product profile in a manner of manufacturing a driving curved surface according to the surface product defect position and the deviation value shown in the reference cloud picture, thereby realizing compensation of the surface product defect in the design stage. According to the invention, the workload of bench worker manual grinding and repairing caused by surface product defect rectification can be reduced, the surface product quality of the automobile outer covering part is rapidly improved, and the mold debugging period is shortened.

Description

technical field [0001] The invention belongs to the technical field of stamping die manufacturing of automobile cover parts, and in particular relates to a compensation method for stamping surface product defects of automobile outer cover parts. Background technique [0002] Under the background of increasingly fierce competition in the domestic automobile manufacturing industry, major automobile manufacturers have put forward higher requirements for the manufacturing quality of automobile bodies. For automobile outer panels, it is necessary not only to ensure its forming performance and dimensional accuracy, but also to ensure its good surface quality, which puts forward higher requirements for the mold equipment for the production of stamping parts. At present, in the mold debugging stage, the manpower and material resources invested in improving the surface quality of the outer cover are gradually increasing, which has become the main factor restricting the production cyc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/23G06F30/15G06F30/17
CPCG06F30/23G06F30/15G06F30/17G06F2113/22
Inventor 闫巍张健王刚李悦冯岩程保权杨宏伟
Owner CHINA FIRST AUTOMOBILE
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