Stamping process profile compensation method for vehicle roof cover with sunroof

A technology for car roof and surface compensation, applied in vehicle parts, transportation and packaging, etc., can solve problems such as insufficient concave resistance, springback, collapse, etc., and achieve the effect of reducing debugging workload, improving quality, and reducing development costs.

Active Publication Date: 2019-10-01
柳州业泰汽车零部件有限公司
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AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to address the above-mentioned defects in the prior art, and provide a method for compensating the stamping process profile of a car roof with a sunroof. During the forming process, due to insufficient dent resistance, surface quality defects such as rebound and collapse occur

Method used

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  • Stamping process profile compensation method for vehicle roof cover with sunroof
  • Stamping process profile compensation method for vehicle roof cover with sunroof
  • Stamping process profile compensation method for vehicle roof cover with sunroof

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Embodiment Construction

[0028] Such as figure 1 The car roof with a sunroof is shown, the front end of the car roof is provided with a front sunroof, and the middle of the car roof is provided with a middle sunroof. The stamping of the car roof product includes the following four processes: the first process is drawing, and the most Part of the shape is obtained in one process; the second process is trimming, punching, and side shaping, and the skylight hole needs to be punched, and the hole outline is determined by flanging; the third process is trimming, flanging, and shaping, which needs to be turned at the skylight Edge; the fourth process is trimming, punching, side punching, side shaping, and upward flanging, which requires side shaping at the skylight. figure 2 It is the stamping direction Z of each process and the X and Y axes of the mold centerline.

[0029] Two technical terms are explained here. The change of the profile refers to the numerical change of several feature points in the hei...

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Abstract

The invention discloses a stamping process profile compensation method for a vehicle roof cover with a sunroof. A stamping process for the vehicle roof cover with the sunroof comprises the following four procedures: 1. drawing; 2. trimming, punching and side shaping; 3. trimming, flanging and shaping; 4. trimming, punching, side punching, side shaping and upward flanging. As for the stamping process profile compensation method, die profiles from the first procedure to the third procedure are compensated. Through the method of the invention, the stamping process profiles are compensated by thepreliminary CAE analysis, and the process compensation scheme is formulated at the process design stage, thereby greatly reducing the die debugging workload, shortening the die forming cycle of complicated panel dies such as the roof cover, reducing die development costs, and improving the quality of the large panel dies.

Description

technical field [0001] The invention relates to the field of manufacturing automobile cover parts, in particular to a method for compensating the profile of a stamping process of an automobile roof with a sunroof. Background technique [0002] The car roof is an important large-scale outer covering. Usually, the car roof is divided into two types: one with a sunroof on the top of the car and one without a sunroof. [0003] The material thickness of the car roof is generally between 0.65-0.8mm, the drawing depth is shallow, most of the deformation and stress are relatively uniform, and the stress value on the forming surface is far less than the tensile strength limit. If the rigidity is insufficient, there will be restlessness when driving and increase the noise inside the car. In the process design, it should be considered how to make the material of the top cover fully extend during forming, and have good strength, rigidity and surface quality. [0004] The anti-dent perf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D35/00B21D53/88
CPCB21D35/001B21D35/002B21D53/88
Inventor 向小汉黄志江毛丹丹刘驰何秀龚荣叶青
Owner 柳州业泰汽车零部件有限公司
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