锻压技术

翼子板内板冲压工艺数值模拟及回弹补偿

英文标题：Numerical simulation and springback compensation on stamping process for fender inner plate

作者：唐妍1 蒋松2

分类号：TG376.9

出版年,卷(期):页码：2021,46(12):105-111

摘要：

构建翼子板内板冲压成形有限元模型，对制件拉延成形过程进行数值模拟；综合考虑材料利用率、塑性应变、面品缺陷及回弹量，确定了制件拼合方式及拉延补充形式。为了提高成形对量产中材料的性能波动、摩擦条件变化、摩擦生热而导致的模具间隙变化等工况的适应性，设计压边力浮动为-10%~30%来确定制件成形裕度，并分析拉延成形压边力的浮动对回弹量的影响。对比制件自由回弹及夹持状态回弹的数值模拟结果，确定回弹补偿基准、回弹补偿策略和回弹补偿区域。数值模拟的回弹结果与调试制件的回弹结果存在一定差异。根据制件生产情况，确定压边力、摩擦因数、屈服强度、抗拉强度、厚向异性指数为主要变量，从制件自由回弹及夹紧回弹的波动情况分析差异性原因。

The finite element model of stamping process for fender inner plate was established, and the drawing process of part was simulated. Then, the splicing way of part and the form of draw-addendum were determined by considering the material utilization rate, plastic strain, surface defects and springback amount comprehensively. In order to enhance the adaptability of the forming on working conditions such as material performance fluctuations, friction condition changes, die clearance changes caused by frictional heat generation in the mass production, the formability margin of part by fluctuating the blank holder force of -10%-30% was designed, and the influence of the blank holder force fluctuation in drawing on the springback was analyzed. Furthermore, the benchmark, strategy and area of springback compensation were determined by comparing the simulation results of free springback and clamping springback of parts, and there was a certain difference of the springback results between numerical simulation and debugged part. Finally, the blank holder force, friction factor, yield strength, tensile strength and thickness anisotropy index were designed as main variables according to the production situation of part, and the reasons for the differences from the fluctuation of free springback and clamping springback of parts were analyzed.

基金项目：

唐妍（1983-），女，硕士，讲师 E-mail：tangyan4job@foxmail.com

参考文献：

[1]孔敏，胡伟，莫建华，等.基于AutoForm的高强钢板成形回弹分析与补偿收敛性研究[J].锻压技术，2019，44（9）：172-179.

Kong M, Hu W, Mo J H，et al. Springback analysis and convergence research on formed parts of high strength steel plate based on AutoForm[J]. Forging & Stamping Technology, 2019，44（9）：172-179.

[2]徐虹，谷诤巍，于婷,等.顶端板拉伸回弹控制与影响因素分析[J].模具工业，2014，40（1）：26-29.

Xu H, Gu Z W, Yu T，et al. Control of drawing springback of top plate and analysis of influence factors[J]. Die Mould Industry，2014，40（1）：26-29.

[3]张继承. 浅谈汽车钣金冲压件回弹的解决方法[J].模具工业，2019， (7)：13-15.

Zhang J C. A brief talk on the solution of springback of automobile sheet metal stamping parts[J]. Die Mould Industry，2019，(7)：13-15.

[4]刘磊. 汽车冷冲压材料利用率提高方案解析[J] .汽车材料与涂装，2018，(14)：195-196.

Liu L. Analysis on improving material utilization rate of automobile cold stamping parts[J]. Automobile Applied Technology，2018，(14)：195-196.

[5]武鹏飞，张璐.汽车翼子板前门区域尺寸匹配控制方法研究[J].精密成形工程，2018，10（4）：145-150.

Wu P F, Zhang L. Control of dimension match in front doorside area of automobile fender[J]. Journal of Netshape Forming Engineering，2018，10（4）：145-150.

[6]孔敏，胡伟，莫建华,等.基于AUTOFORM的汽车顶棚冲压回弹评估及补偿研究[J] .锻压技术，2019，44（8）：42-47.

Kong M, Hu W, Mo J H,et al. Research on evaluation and compensation of stamping springback for automobile roof based on AUTOFORM[J]. Forging & Stamping Technology, 2019，44（8）：42-47.

[7]奚道俊，韩小后.汽车行李箱外板回弹控制的工艺研究 [J].模具工业，2018，44（2）：19-21.

Xi D J, Han X H. Process research on springback control of automobile trunk lid outer panel[J]. Die Mould Industry，2018，44（2）：19-21.

[8]贾文博，王振宏，尹凯.基于Autoform的汽车翼子板回弹补偿方法研究[J].模具工业，2017，43（9）：7-9.

Jia W B, Wang Z H, Yin K. Study on springback compensation method of automobile fender based on Autoform[J]. Die Mould Industry，2017，43（9）：7-9.

[9]肖华，刘艳，汤禹城,等. 高强度钢冲压回弹量对板料力学性能参数的灵敏度分析[J].冲压，2007，42(2)：69-71.

Xiao H, Liu Y, Tang Y C，et al. Sensitivity analysis of effect of material properties to spingback of high strength steel[J]. Stamping，2007，42(2)： 69-71.

服务与反馈：

【文章下载】【加入收藏】