Transactions of Materials and Heat Treatment

Title：G1 stable extension algorithm on complex surface in die surface design

Authors： Yao Bing Liu Yuqi Zhang Zhibing Wang Zhen Zhang Xilei

Unit： State Key Laboratory of Material Processing and Die & Mould Technology Huazhong University of Science and Technology

KeyWords： surface extension boundary feature automatic segmentation skinning surface G1 continuity

ClassificationCode：TG386.3; TP319

year,vol(issue):pagenumber：2024,49(8):47-52

Abstract：

A complex surface extension algorithm based on boundary features and a bidirectional skinning surface method based on boundary derivatives were proposed, and the stable creation of G1 extension for complex surface was achieved. Then, the algorithm realizes the conformal relationship between extension surface and original surface by using boundary features, and the quality of surface is improved greatly. Furthermore, the extension surfaces in segments are constructed by the hybrid strategy of skin and fill surfaces to overcome the problems of overlapping and wrinkling that were prone in the complex surface extension, and the stability of extension surface is greatly improved. In addition, the bidirectional skinning surface method based on boundary derivatives was proposed to ensure G1 continuity of surface at the extension boundary. Based on platform NX, the boundary extension function was developed, and the automatic extension of die surface boundary was realized. The actual test results show that the proposed algorithm has the advantages of stability, reliability, high degree of automation, and good surface quality, which can effectively shorten the design cycle of the entire die surface.

Funds：

作者简介：姚兵(1999-),男,硕士研究生 E-mail：m202171022@hust.edu.cn 通信作者：章志兵(1978-),男,博士，副教授 E-mail：zhangzb@hust.edu.cn

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