锻压技术

大长宽比零件尺寸回弹分析及控制方法

英文标题：Dimensional springback analysis and control method for large aspect ratio parts

作者：颜丹丹1 赵晶石2 潘远安1

单位：1. 长春汽车职业技术大学电气工程学院 2. 中国第一汽车集团有限公司解放汽车分公司

关键词：冲压风窗外板回弹长宽比拉延

分类号：TG386.3+2

出版年,卷(期):页码：2025,50(7):82-87

摘要：

为解决商用车风窗外板造型长宽比悬殊、回弹大，且尺寸精度对白车身总成精度影响大的问题,以某商用车风窗外板实际生产回弹问题为例，通过Autoform对冲压零件产品工艺过程进行回弹分析，确定工序件的回弹趋势，在拉延工序的相关区域进行最大值2.22 mm的回弹补偿，并通过模拟分析验证补偿结果。结果表明：补偿后产品在检具夹持的状态下零件全部达到理论公差值以内。现场调试控制拉延的研配着色和板料流入量等因素条件与CAE仿真一致，实际生产零件的回弹与模拟仿真结果也一致。生产实践证明，通过CAE模拟仿真可以有效控制和调整长宽比较大的冲压风窗外板零件的回弹问题。

In order to solve the problem that the windshield outer panel of a commercial vehicle has a large aspect ratio, large springback, and the dimensional accuracy has a great impact on the accuracy of body-in-white assembly, for the springback problem in actual production of a commercial vehicle windshield outer panel, the springback analysis on the stamping process of part was conducted by Autoform, and the springback trend of process parts was determined. Then, the springback compensation with a maximum value of 2.22 mm was given in the relevant area of the drawing process, and the compensation results were verified by simulation analysis. The results show that after compensation, all parts are within theoretical tolerance value in the fixture-clamped state. The on-site debugging ensures that the drawbead contact pattern, sheet metal inflow and other factors of drawing are consistent with the CAE simulation, and the springback of actual produced parts is also consistent with the simulation result. Thus, the production practice proves that CAE simulation can effectively control and adjust the springback problem of stamping windshield outer panel parts with a large aspect ratio.

基金项目：

吉林省教育厅科学技术研究项目(JJKH20251907KJ);中国汽车工业协会职业技术课题（2024QX370121）；长春汽车职业技术大学校级科研课题（XJKY202412）

作者简介：颜丹丹（1982-），女，硕士，副教授 E-mail：49364102@qq.com 通信作者：潘远安（1983-），男，硕士，正高级工程师 E-mail：116521719@qq.com

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