Transactions of Materials and Heat Treatment

Title：A stable generation method for gap surface of trimming die for automotive panels based on 3D offset mapping

Authors： Tao Jikun1 Liu Yuqi1 Zhang Zhibing1 Wang Zhen2

Unit： 1.State Key Laboratory of Material Processing and Die & Moduld Technology Huazhong University of Science and Technology 2.Wuhan Hua Feng Hui Zhong Technology Co. Ltd.

KeyWords： automotive panel trimming die curve offset geometric mapping gap surface

ClassificationCode：TG386.3; TP319

year,vol(issue):pagenumber：2024,49(11):126-134

Abstract：

In order to quickly and stably construct the gap surfaces of trimming die for automotive panels, a method based on geometric offset mapping was proposed to construct the gap surface, which extended the rolling circle algorithm commonly used in 2D curve offset to 3D space to realize the horizontal and vertical offset of spatial curves, generate the overall smooth offset curve, and improve the stability and quality of complex spatial curve offset. Then, the gap surface of trimming die was constructed based on offset curve and 3D offset mapping relationship, and the quality problems such as wrinkles and overlaps that were prone to occur on the gap surface were solved. Furthermore, based on NX platform, the method was integrated into the intelligent design system of automotive panel trimming die, and a large number of tests were carried out on the actual automotive panel trimming die. The results indicate that the method is stable and reliable, and the shape quality of the constructed gap surface is good, which significatly improves the design quality and efficiency of trimming die.

Funds：

广东省重点领域研发计划资助项目（2021B0101220001）

作者简介：陶继坤（1999-），男，硕士研究生 E-mail：524362942@qq.com 通信作者：章志兵（1978-），男，博士，副教授 E-mail：zhangzb@hust.edu.cn

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