锻压技术

覆盖件修边镶块随形曲面的优化处理方法

英文标题：Optimized method of trimmed inserts shape-fitting surface for automobile panel

作者：黄辉章志兵柳玉起

单位：华中科技大学

分类号：TG386; TP391.7

出版年,卷(期):页码：2017,42(5):14-18

摘要：

为了解决符形类修边镶块刃口面、空刀面等随形曲面创建效率低的问题，提出了一种局部型面裁剪法，仅使用镶块所在位置处的局部型面去裁剪镶块实体，避免对整个型面进行数据搜索处理，解决了完整型面裁剪法耗时过长的问题，使单个镶块的设计效率提高约100%。同时，为了改善非符形类修边镶块随形曲面质量，提出了一种分段式扫略作面法，采用标记法识别曲线的曲率剧变区域，据此将曲线分为多段，进行对应扫略作面再缝合，可解决整体式扫略作面法产生的曲面局部扭曲问题。并通过实例进行效率和质量的对比分析，说明了两种方法的有效性。

In order to solve the problem of low efficiency on creating trimmed inserts shape-fitting surface of cutting surface and clearance surface, a partial-profile splitting method was presented to trim insert by the partial profile at the insert location, and the data searching process for the whole profile was omitted. Therefore, the time-consume problem of whole surface trimming method was solved, and the design efficiency of single insert was improved by 100%. At the same time, a segmented-sweeping method was put forward to improve the shape-fitting surface quality of non-shape-fitting trimming insert. Furthermore, the curvature upheaval area was recognized by the tag method, and the curves were divided into several segments to sew the corresponding sweeping surfaces. Thus, the local distortions of surface produced by the integral sweep method were solved, and the effectiveness of two methods was analyzed by examples to make comparisons of their efficiency and quality.

基金项目：

国家自然科学基金资助项目（51275184）

黄辉（1990-），女，硕士研究生章志兵（1978-），男，博士，讲师

参考文献：

［1］李雅. 汽车覆盖件冲压成形技术[M]. 北京：机械工业出版社，2012.Li Y. Auto Body Parts′Stamping Forming Technology [M].Beijing: China Machine Press, 2012．
［2］史茂华. 镶块结构的模具设计[J]. 汽车工艺与材料，2010，(10)：26-41.Shi M H. The mould design of insert structure[J]. Automobile Technology & Material，2010，(10):26-41.
［3］向红英. 拉延模型面采用镶块拼接的原因分析[J]. 西华大学学报:自然科学版，2006, 25(3):44-45.Xiang H Y. The analysis of the reasons of die-face of drawing die by inserts joint[J].Journal of Xihua University: Natural Science, 2006，25(3)：44-45.
［4］窦宇, 王金卓, 王义林. 基于UG的修边翻边镶件参数化设计系统研究[J]. 模具工业, 2015, 41(11):7-11.Dou Y, Wang J Z, Wang Y L. Parametric design system of trimming and flanging die insert based on UG [J]. Die & Mould Industry, 2015, 41(11):7-11.
［5］徐川淇, 王义林, 郭强,等. 基于UG的修边镶块参数化设计方法[J]. 模具制造，2014, 14(2):77-80.Xu C Q, Wang Y L, Guo Q, et al. The parametric design method of trimming die insert based on UG NX[J]. Die & Mould Manufacture, 2014, 14(2):77-80.
［6］杨亘，彭庆红. 基于UG的覆盖件翻边模凹模镶块的自动设计[J]. 顺德职业技术学院学报，2006, 4(1):16-19.Yang G, Peng Q H. An automatic design method in panel flange die design based on UG [J]. Journal of Shunde Polytechnic, 2006, 4(1):16-19.
［7］陶文, 章志兵, 柳玉起. 基于滚圆方法的修边镶块曲线快速拟合算法研究[J]. 锻压技术, 2016, 41(6):150-155.Tao W, Zhang Z B, Liu Y Q. Study on rapid fitting method for trimming insert curve based on circle rolling [J]. Forging & Stamping Technology, 2016, 41(6):150-155.
［8］贾春阳, 杨岳, 陈峰,等. 等弧长原则的NURBS曲线离散算法[J]. 计算机工程与应用, 2014, 50(3):165-167.Jia C Y, Yang Y, Chen F, et al. NURBS curve discrete algorithm based on equal arc-length principle[J]. Computer Engineering and Applications, 2014, 50(3):165-167.
［9］甘屹, 齐从谦, 陈亚洲. 基于遗传算法的曲线曲面光顺[J]. 同济大学学报:自然科学版, 2002, 30(3):322-325.Gan Y, Qi C Q, Chen Y Z. Smoothing of curves and surfaces based on genetic algorithm [J]. Journal of Tongji University: Natural Science, 2002, 30(3):322-325.

服务与反馈：

【本网站尚未开通全文下载服务】【加入收藏】