锻压技术

汽车座椅对称件冲压成形仿真设计及优化

英文标题：Simulation design and optimization on stamping of symmetrical parts for automobile seats

作者：任维泽段绪星林益文雷鹏英裴泽宇

单位：中国核动力研究设计院

分类号：TH162

出版年,卷(期):页码：2024,49(1):75-80

摘要：

为了解决高强度钢作为汽车零件材料在冲压成形过程中存在的成形缺陷，以某品牌汽车座椅的调角器边板为例，针对其几何结构和对称件的特征进行了冲压工艺流程设计及优化、零件成形精度优化。首先，确定零件的冲压工序，根据其结构特点将冲孔工序的工作内容与其他工序合并，合理减少总工序数，并一次对两个零件同时进行冲压，优化后的冲压工艺流程为：落料、拉深、修边、翻边。然后，通过调整压边力、摩擦因数和拉深模具间隙3个工艺参数对零件的成形精度进行优化，降低其回弹量，使零件满足实际尺寸精度要求，优化后的工艺参数组合为压边力为33 kN、摩擦因数为0.13、拉深模具间隙为2.70 mm，仿真结果中零件的最大回弹量为1.264 mm。最后，进行样件试冲，零件实际的最大回弹量为1.270 mm，与仿真结果基本一致，验证了仿真结果的有效性。

In order to solve the forming defects in the stamping process of high-strength steel as the material of automobile part, for the side panel of angle adjuster for automobile seat of a certain brand, according to its geometric structure and the characteristics of symmetrical parts, the design and optimization on the stamping process flow and the optimization of part forming accuracy were carried out. First, the stamping process of parts is determined, the work content of punching process is merged with other processes according to its structural characteristics so as to reduce the total number of processes reasonably and complete the stamping of two parts simultaneously and the optimized stamping process is blanking, deep drawing, trimming and flanging. Then, the forming accuracy of part is optimized by adjusting blank holder force, friction coefficient and deep drawing die clearance to reduce its springback amount and make the part meet the actual dimensional accuracy requirements. The optimized combination of process parameters is that the blank holder force is 33 kN, the friction coefficient is 0.13 and the deep drawing die clearance is 2.70 mm, and the maximum springback amount of part in the simulation results is 1.264 mm. Finally, the test stamping of sample shows that the actual maximum springback amount of part is 1.270 mm, which is basically consistent with the simulation results and verifies the validity of the simulation results.

基金项目：

作者简介：任维泽（1995-），男，硕士，研究实习员 E-mail：renwz7@163.com 通信作者：段绪星（1995-），男，硕士，助理研究员 E-mail：xxing_duan@163.com

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