Transactions of Materials and Heat Treatment

Title：Surface compensation method and application for improving fit rate of automobile drawing dies and parts

Authors： Wang Hui Jin Xiangfeng Fu Jie Liu Lizi

Unit： College of Mechanical Engineering Chongqing Three Gorges University Chongqing Light Alloy Materials and Processing Engineering Technology Research Center Chongqing Engineering Research Center for Advanced Intelligent Manufacturing Technology

KeyWords： surface compensation fit rate die deformation drawing die forming load

ClassificationCode：TG386.1

year,vol(issue):pagenumber：2022,47(11):196-200

Abstract：

For the problem of long research and development cycle in the development of drawing die for automobile cover panels, a die surface compensation method was proposed based on the variation of part thickness and the deformations of punch and die, so as to improve the fit rate of die surface and part in the drawing die trial. Firstly, the numerically simulation of drawing process was carried out by the stamping software, and the change of forming load and thickness of formed part were obtained. Secondly, the maximum load information obtained by the drawing analysis was mapped to the three-dimensional solid model which was divided into meshes, and the static analysis of die was performed to obtain the deformation displacement of die. Finally, with the help of the global shape modeling (GSM) module for software ThinkDesign, the die surface was compensated by the die deformation displacement and the thickness change displacement in turn. Furthermore, for the drawing die of automobile front bulkhead, the die surface compensation and the experimental verification were carried out. The results show that the proposed method can effectively improve the fit rate of drawing die in the first die trial.

Funds：

重庆市教委科学技术研究项目（KJQN202101234）；重庆市自然科学基金资助项目(cstc2019jcyj-msxmX0505)

作者简介：王辉(1989-)，男，博士，讲师，E-mail：wanghui@sanxiau.edu.cn

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