基于变压边力技术的汽车前轮罩拉深工艺研究
Research on Deep Drawing Process for Front Wheel Cowling Panel of Automobile Based on Variable Blank Holder Force
陈从升1， 李 恩2， 韩 豫2， 李 亨2
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作者单位：（1.安徽建筑工业学院 机电工程学院，安徽 合肥 230601；2.合肥工业大学 材料科学与工程学院，安徽 合肥 230009
中文关键字：汽车前轮罩板； 拉深成形； 变压边力； 神经网络； 遗传算法
英文关键字： front wheel cowling panel of the automobile; deep drawing; variable blank holder force; neural network；genetic algorithm
中文摘要：为有效解决实际生产中汽车前轮罩拉深成形困难、产品质量差的问题，采用变压边力控制技术对其拉深成形过程进行研究，得出U型变压边力加载模式为最适合该件成形的变压边力控制模式。借助人工神经网络和遗传算法对U型变压边力加载曲线进行优化，得到了最优压边力控制曲线。在该加载模式下，拉深件无起皱和拉裂缺陷，零件区域厚度分布均匀，整体成形质量较好，满足设计和使用要求。
英文摘要：To effectively solve the problems of forming difficulty and poor quality in the deep drawing of front wheel cowling panels, the variable blank holder force（VBHF） technique was adopted. The results show that U-type is the best style of VBHF. Moreover, the artificial neural network and genetic algorithm are used to optimize the U load curve, and the optimal VBHF control curve is obtained. In this mode, there is no wrinkle and crack in drawing parts, the thickness distribution is even and the overall forming quality is better, which meet the design and use requirements.