一种弧形高强钢车身零件冲压回弹控制方法  

A new method of control of springback of high strength steel parts with arched surface

作　　者：吴磊[1] 曹昭展[1] 李光耀[1] 

机构地区：[1]湖南大学汽车车身先进设计制造国家重点实验室,长沙410082

出　　处：《计算力学学报》2011年第1期37-43,共7页Chinese Journal of Computational Mechanics

基　　金：国家杰出青年科学基金(50625519);教育部长江学者与创新团队发展计划资助项目

摘　　要：高强度钢板材料冲压性能对冲压成形后零件精度的影响较大,主要表现在成形性能不稳定和回弹控制复杂。弧形零件具有典型的回弹特征,且回弹量较大,难以获取回弹的具体运动规律,给回弹控制和补偿带来了困难。本文在分析弧形高强钢零件回弹特征规律的基础上,开发典型截面回弹运动规律分析程序,定量分析回弹截面整体和局部的平动与转动量,采用反向补偿因子法生成回弹控制截面,应用整体变形方法生成补偿模型。实践证明,应用该方法的某弧形高强钢零件的回弹得到了有效控制,节省了生产调试时间,缩短了制造周期。High strength steels are widely used in automotive industry,they are often found to be more likely to cracked and springback than ordinary plain-carbon steels when they are used.It is difficult to control springback of parts with arched surface in respect that more springback warp.The paper studied on springback of a typical part with arched surface,a system which can control springback is presented based on the characteristic cross-section of the movement of springback method.Firstly,the result of springback could be calculated by FE system or obtained by scan way.Secondly,the parameters of springback movement in the characteristic cross-sections could be analyzed by springback movement of characteristic cross-section method（SMCS）.And thirdly,springback control section could be obtained based on the parameters of springback movement by compensation factor method.And last,based on the origin CAD surface and the control section of springback,the mould was compensated for springback by application of shape global deformation method.The practice proved that the system can save more time to deal with springback of part with arched surface,the result of springback compensation is right and applied and the method is worth to spread.

关 键 词：先进高强度钢板 冲压 回弹 补偿 截面回弹运动法 

分 类 号：TG386.1[金属学及工艺—金属压力加工]