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Title:Springback compensation research of stamping for automobile hood outer plate
Authors:  
Unit:  
KeyWords:  
ClassificationCode:TG386
year,vol(issue):pagenumber:2021,46(5):64-71
Abstract:

 For the hood outer plate of a certain car, the springback vector after the stress release of each process was calculated by the process simulation analysis of the part. At the same time,considering the material flow and springback caused by the additional deformation of process parts when the pressed plate in the upper die was contacting with the lower die in each process, the reasonable compensation scheme was selected. Then, the spingback vector was simulated and evaluated exactly, and A-surface restructure was conducted by the compensation data. Based on the reconstructed and optimized data, the scheme was verified by producing the parts on site. The results show that the try-out work of the A-surface area for product is reduced by 60%, and the first part is qualified in size, which is consistent with the simulation prediction result. So the die does not require rectification work to solve the problem of the unstable springback for hood outer plate effectively, and the method proposed has important guiding significance for improving the accuracy of CAE simulation and springback compensation, avoiding the rectification of surface machining after die assembly, reducing the optimization times of die debugging, and meeting the requirements for assembling the whole car in advance.

 
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AuthorIntro:
孙刚(1977-),男,博士,高级工程师 E-mail:gang.sun.pl@faw-vw.com 通讯作者:徐建军(1982-),男,硕士,高级工程师 E-mail:qs2463001982@163.com
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