锻压技术

汽车铝合金天窗加强板冲压回弹控制

英文标题：Control on stamping springback for aluminium alloy automobile skylight reinforcing sheet

作者：薛颖陈青山黄瑶王雷刚

分类号：TG386.3

出版年,卷(期):页码：2022,47(4):84-90

摘要：

针对铝板冲压回弹严重的问题，以某汽车铝合金天窗加强板零件为例，研究了减少回弹的措施。首先，对该零件进行工艺分析，初步确定冲压工序；然后，借助同步工程的理念，对回弹较为严重的零件特征进行优化，最终确定冲压工序为OP10落料，OP20拉延，OP30切边和冲孔，OP40切边和冲孔，OP50切边和整形；其次，利用AutoForm软件进行全工序模拟，分别进行整体和局部回弹补偿，使得产品回弹后的尺寸满足公差要求；最后，基于板料流入量进行模具调整，利用调压垫片，控制板料流动性，减少回弹。最终生产表明，同步工程、回弹补偿和调整板料流入量这三者相结合能够有效地减少铝板回弹。

For the problem of serious stamping springback for aluminum sheet, the solution to reduce the springback of an aluminum alloy automobile skylight reinforcing sheet was studied. Firstly, the process analysis of the part was carried out to determine the preliminary stamping process. Secondly, with the help of synchronous engineering (SE), the serious springback features of part were optimized, and the stamping processes were determined as OP10 blanking, OP20 drawing, OP30 trimming and piercing, OP40 trimming and punching and OP50 trimming and shaping. Then, the whole process simulation was conducted by software Autoform to perform overall and local springback compensations, which made the sizes of the part after springback meet the tolerance requirements. Finally, the die was adjusted based on the sheet inflow amount, and the pressure regulating gasket was used to control the fluidity of sheet and reduce the springback. The final production shows that the combination of SE, springback compensation and adjustment of sheet inflow amount can effectively reduce the springback of aluminum alloy sheet.

基金项目：

作者简介：薛颖(1997-)，女，硕士研究生 E-mail：2235848526@qq.com 通信作者：王雷刚(1963-)，男，博士，教授，博士生导师 E-mail：lgwang@ujs.edu.cn

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