锻压技术

高强钢拼焊板前地板纵梁成形工艺设计及回弹控制

英文标题：Forming process and springback control of front rail tailor-welded blanks for high-strength steel

作者：闫瑞雪王波

关键词：回弹拉延拼焊板高强钢前地板纵梁

分类号：TG386.3+2

出版年,卷(期):页码：2016,41(10):52-57

摘要：

以高强钢拼焊板为研究对象，基于有限元软件Dynaform对某轿车前地板纵梁成形过程进行工艺设计并利用模拟结果进行工艺优化。将考虑每道工序变形累积的回弹模拟结果和不考虑每道工序变形累积的回弹模拟结果进行对比分析，结果表明，考虑变形累积可以提高回弹模拟精度，并对每工序卸载回弹结果进行补偿。基于补偿结果进行实际生产，运用白光扫描仪对零件进行逆向获取新模型，并与原始模型对比得到回弹结果，发现零件两侧直壁和圆角部分主要存在正偏差，且两侧回弹不一致。以新模型为基础再次进行回弹补偿，对整形模具进行修整，最终得到满足工程需要的零件。

For tailor-welded blanks of high strength steel, the forming process of front rail part for an automobile was designed based on Dynaform software and optimized based on simulation results. The simulation results of springback with and without considering deformation accumulation of every procedure were contrasted. Taking a consideration of deformation accumulation of every procedure can improve the simulation accuracy of springback, and the unloading springback results of every procedure was compensated. The compensated results were applied to practical production, and parts were scanned by the White-light scanner to get the new model. Then, the springback results were obtained by comparing the new model and the original model. It is found that there are positive bias on both sides of straight wall and rounded corners, and the springback results of both sides of parts are inconsistent. The springback obtained by the new model was compensated again to adjust the shaping die, and the parts meeting the needs of engineering were gained finally.

基金项目：

国家科技部技术创新项目(07C26215110824)

作者简介：闫瑞雪（1985-），女，硕士，讲师 E-mail：18875207938@163.com

参考文献：

[1]戴洪.前纵梁高强激光拼焊板全工序成形及回弹控制研究[D].重庆:重庆大学,2014.

Dai H. Research on Forming and Springback Control of Front Rail with High-Strengh Laser Tailor Welded Blanks[D]. Chongqing: Chongqing University,2014.

[2]张旭,周杰. 高强度钢后保险杠成形工艺优化及回弹控制[J].热加工工艺,2010,39(5):102-106.

Zhang X, Zhou J. Optimization and springback control of rear bumper forming process[J]. Hot Working Technology, 2010, 39(5): 102-106.

[3]鄂大辛. 成形工艺与模具设计[M]. 北京: 北京理工大学出版社, 2007.

E D X. The Forming Technology and Die Design[M]. Beijing: Beijing Institute Technology Press, 2007.

[4]程洁青,王玉超,兰凤崇. 基于正交试验的汽车覆盖件冲压工艺参数优化[J].计算机集成制造系统, 2007, 13(12): 2433- 2440.

Cheng J Q, Wang Y C, Lan F C. Optimization for stamping process parameters of automotive body parts based on orthogonal experiments[J]. Computer Integrated Manufacturing System, 2007, 13(12): 2433-2440.

[5]霍春梅. 差厚拼焊板 U 形件的回弹规律及控制的研究[J]. 热加工工艺, 2009,38(7):17-20.

Huo C M. Research on springback rules and control of U-shaped bending of trailor-welded blanks[J]. Hot Working Technology, 2009, 38(7):17-20.

[6]周杰,罗艳,王珣，等. 汽车前纵梁高强激光拼焊板成形工艺多目标优化[J]. 华中科技大学学报,2015,43(2):45-49.

Zhou J, Luo Y, Wang X, et al. Multi-objective optimization of stamping forming process for TWB[J]. Journal of Huazhong University of Science and Technology, 2015,43(2):45-49.

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