锻压技术

汽车冷却器缓冲罩多工位成形工艺设计及数值模拟

英文标题：Multi-position forming process design and numerical simulation for car cooler buffer

作者：蔡丹云丁明明

单位：浙江水利水电学院

分类号：

出版年,卷(期):页码：2015,40(4):28-33

摘要：

分析了汽车冷却器缓冲罩的结构特点和冲压工艺特性，制定了该零件成形工艺方案。运用Dynaform软件对其多工位级进冲压过程中主要涉及的拉深、整形、冲孔、翻边等工序进行数值模拟。分析了每个成形工序的板料成形极限图（FLD）和零件壁厚分布图，模拟结果符合零件成形要求。据此设计出该零件12工位的级进冲压模具，试模生产出了合格的产品。通过对模拟和试冲结果相比较，其零件厚度的最大相对误差为2.87%，获得了较好的一致性。目前该汽车冷却器缓冲罩级进模已投入大批量生产。

The structural and stamping process characteristics of the car cooler buffer were analyzed. The reasonable multi-position forming process scheme was formulated. The multi-position progressive stamping process including drawing, sizing, punching and flanging was simulated numerically by the Dynaform software. The forming limit diagram(FLD) and the thickness distribution for each process were analyzed. The simulation results meet the requirements of part. According to the simulation results, twelve-position progressive stamping die was designed, and the qualified product was produced by the die-testing. Through the comparison between simulation and die-testing, the maximum relative error of the product thickness is only 2.87%, which shows good consistency. At present, the car cooler hood progressive die has been put into mass production.

基金项目：

浙江省科技厅公益技术研究工业项目（2014c31112）;浙江省教育厅科研项目（Y201329634）

蔡丹云（1975-），女，硕士，讲师

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