锻压技术

基于3D偏置映射的汽车覆盖件修边模具空开面稳定生成方法

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

单位：1.华中科技大学材料科学与模具技术国家重点实验室 2.武汉华锋惠众科技有限公司

分类号：TG386.3; TP319

出版年,卷(期):页码：2024,49(11):126-134

摘要：

为了快速稳定地构建汽车覆盖件修边模具中的空开面，提出了一种基于几何偏置映射构建空开面的方法。该方法将二维曲线偏置中常用的滚圆算法扩展至三维空间，实现了空间曲线的水平和竖直偏置，生成的偏置曲线整体光顺，提高了复杂空间曲线偏置的稳定性和质量。基于偏置曲线和3D偏置映射关系构造修边模具的空开面，解决了空开面容易出现的褶皱、重叠等质量问题。基于NX平台，将该方法集成于汽车覆盖件修边模具智能设计系统中，并对实际汽车覆盖件修边模具进行了大量测试，结果表明，该方法稳定可靠，构建的空开面形态质量好，显著提高了修边模具的设计质量和效率。

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.

基金项目：

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

参考文献：

[1]崔令江. 汽车覆盖件冲压成型技术[M]. 北京: 机械工业出版社, 2003.

Cui L J. Stamping and Forming Technology of Automobile Covering Parts [M]. Beijing: China Machine Press, 2003.

[2]张紫阳, 章志兵, 柳玉起. 一种基于CATIA平台的修边镶件刃口面拟合方法[J]. 模具工业, 2017, 43(8): 1-4，9.

Zhang Z Y, Zhang Z B, Liu Y Q. A method of cutting surface fitting for trimming insert based on CATIA platform[J]. Die & Mould Industry, 2017, 43(8): 1-4, 9.

[3]周泽明. 基于CATIA平台的智能符形空开设计系统开发[D]. 武汉: 华中科技大学, 2015.

Zhou Z M. Intelligentized Shape-conforming and Opening Design System Based on CATIA[D]. Wuhan: Huazhong University of Science and Technology, 2015.

[4]张虎, 杨海龙, 陈永飞，等. 基于NX的覆盖件修边模工作部件模块化设计[J]. 模具制造, 2014, 14(3): 5-8.

Zhang H, Yang H L, Chen Y F, et al. Modular design of working parts of trimming die for automobile panel based on NX[J]. Die & Mould Manufacture, 2014, 14(3): 5-8.

[5]黄辉. 基于NX平台的覆盖件修边冲孔镶块自动化设计关键技术研究[D]. 武汉: 华中科技大学, 2017.

Huang H. Research on Automatic Design of Trimming and Punching Insert Based on NX Platform[D]. Wuhan: Huazhong University of Science and Technology, 2017.

[6]梁中凯. 参数和草图驱动的汽车覆盖件修边刀块自动化设计研究[D]. 武汉: 武汉科技大学, 2020.

Liang Z K. Research on Automated Design of Trimming Block for Automotive Panels Driven by Parameters and Sketch[D]. Wuhan: Wuhan University of Science and Technology, 2020.

[7]Piegl L, Tiller W. The NURBS Book[M]. Berlin, Heidelberg: Springer Science & Business Media, 1996.

[8]Li J J, Kong C P, Zhou X H. Automatic design for trimming die insert of automotive panel[J]. The International Journal of Advanced Manufacturing Technology, 2020, 106(9-10), 4451-4465.

[9]李俊杰. 曲线曲面偏置理论研究及其在模具智能设计中的应用[D]. 上海: 上海交通大学, 2020.

Li J J. Research on the Offset Theory of Curve/Surface and Its Application in the Intelligent Design of Die and Mould[D]. Shanghai: Shanghai Jiao Tong University, 2020.

[10]胡英柯. 基于特征工程的预批量拉延模具智能辅助设计系统研究[D]. 长沙: 湖南大学, 2022.

Hu Y K. Research on Intelligent Aided Design System of Soft Tooling Drawing Die for Body Panels[D]. Changsha: Hunan University, 2022.

[11]Li G, Liang Z K. Onesided offsetting and smoothing algorithm for complex 3D trimming curve of trimming insert steel for automotive panels[J]. International Journal of Computer Integrated Manufacturing, 2020, 33(12):1356-1370.

[12]Li G, Liang Z K. Intelligent design method and system of trimming block for stamping dies of complex automotive panels[J]. The International Journal of Advanced Manufacturing Technology, 2020, 109(9-12):2855-2879.

[13]张阿飞, 柳玉起, 章志兵, 等. 汽车覆盖件模面工程中复杂圆角建模算法[J]. 锻压技术, 2023, 48(9): 41-48.

Zhang A F, Liu Y Q, Zhang Z B, et al. Modeling algorithm on complex fillets in die surface engineering of automobile covering panels [J]. Forging & Stamping Technology, 2023, 48(9): 41-48.

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