锻压技术

面向自动化设计的拉深筋参数化建模方法

英文标题：Parametric modeling method of drawbead by automated design

作者：王振张秋翀柳玉起章志兵

单位：华中科技大学

分类号：TP391.7

出版年,卷(期):页码：2016,41(10):37-42

摘要：

提出一种拉深筋参数化建模与自动化设计的方法，实现了拉深筋的实时设计、实时更新以及参数化设计。该方法根据定义的拉深筋控制点参数信息，应用正交截面法创建拉深筋截面曲线，解决了拉深筋创建中容易出现的冲压负角关键问题。采用同形分段法，实现了多形状混合拉深筋的功能，显著提高了拉深筋设计的灵活性。通过沿压料面法向延伸拉深筋线，对拉深筋端头进行光顺设计。该方法基于CATIA的参数关联和自定义特征（UDF）技术，提出了实体拉深筋UDF概念，开发了拉深筋参数化设计系统(DBDS)，实现了拉深筋的参数化创建和编辑。经过大量汽车覆盖件实例测试，该方法稳定可靠、拉深筋参数准确，适用于拉深筋的自动优化设计。

A method for parametric modeling and automated design of drawbead was proposed to achieve real-time design, real-time update and parametric design. According to defined parameters of control points, the section curves were created by the orthogonal section method to avoid the undercut shape that easily appeared in the modeling of drawbead. The function of hybrid drawbead with the multiple shapes was implemented by segmenting the same drawbead, and the design flexibility of drawbead was improved observably. Through extrapolating the drawbead curve along the normal direction of binder, the ends of drawbead were designed smoothly. Based on the parameter association of CATIA and user defined feature (UDF), the UDF of the real drawbead was proposed and a system for parametric design of drawbead (DBDS) was developed, which realized the parametric creation and modification of drawbead. Through testing massive amounts of automotive cover panels, the method is proved to be reliable and accurate, which is appropriate for automated optimization design of drawbead.

基金项目：

国家自然科学基金资助项目(51275184)

作者简介：王振（1989-），男，博士研究生 E-mail：wzyuchen1989@163.com；通讯作者：柳玉起（1966-），男，博士，教授 E-mail：liuyq@mail.hust.edu.cn

参考文献：

[1]李奇涵，王文广，邓义，等. 基于数值模拟的油箱底壳拉延筋设置与优化 [J].锻压技术,2014, 39(12) : 31-38.

Li Q H, Wang W G, Deng Y, et al. Design and optimization of drawbead of oil pan drawing based on numerical simulation [J]. Forging & Stamping Technology, 2014, 39(12) : 31-38.

[2]肖景容，姜奎华.冲压工艺学 [M].北京：机械工业出版社，1990.

Xiao J R, Jiang K H. Stamping Technology [M]. Beijing: China Machine Press, 1990.

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

Cui L J. Automotive Covering Parts Forming Technology [M]. Beijing: China Machine Press, 2003．

[4]Firat M. An analysis of sheet drawing characteristics with drawbead elements [J]. Computational Materials Science, 2008,41(3): 266-274.

[5]Larsson M. Computational characterization of drawbeads a basic modeling method for data generation [J].Journal of Materials Processing Technology, 2009, 209(1):376 -386.

[6]张敏，苏兰海，王君英.基于CAA的CATIA用户自定义特征创建 [J].机械设计与制造，2008，(9) :87-89.

Zhang M, Su L H, Wang J Y. The creation of user defined geometric feature based on CAA/CATIA [J]. Machinery Design & Manufacture, 2008, (9):87-89.

[7]余海燕，陈关龙，张卫刚，等.板料成形技术中拉深筋的研究进展 [J].塑性工程学报，2004，11 (3):77-81.

Yu H Y, Chen G L, Zhang W G, et al. Development of drawbead investigation in sheet metal forming technology [J]. Journal of Plasticity Engineering, 2004, 11 (3):77-81.

[8]王新宝，谢延敏，王杰，等.基于改进 PSO－BP 的拉延筋参数反求优化 [J].锻压技术, 2014, 39(4):10-15.

Wang X B, Xie Y M, Wang J, et al. Parameter inverse optimization for drawbeads based on improved PSO－BP model [J]. Forging & Stamping Technology, 2014, 39(4):10-15.

[9]金淼. 板料成形中拉深筋的力学性能及影响因素研究 [D].秦皇岛：燕山大学, 2000.

Jin M. Drawbead Mechanics Characters and Influences in Sheet Forming [D]. Qinhuangdao: Yanshan University, 2000.

[10]金淼，郭宝锋，李硕本，等.半圆形拉深筋尺寸参数对其阻力的影响 [J].塑性工程学报, 2003, 10 (1): 32-35.

Jin M, Guo B F, Li S B, et al. The relation between circle drawbead restraining force and its dimension parameters [J]. Journal of Plasticity Engineering, 2003, 10 (1): 32-35.

[11]Stoughton T B. Model of drawbead forces in sheet metal forming [A].Proc.of IDDRG 15th Biennial Congress [C].USA: Dearborn，1988.

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