基于DFSS的前纵梁Kick-down零件边缘开裂冲压工艺研究  

Research on Stamping Process of Edge Cracking of Front Rail Kick-down based on DFSS

作　　者：鲍立[1] 郑德兵[1] 余欢庆 赵传江 BAO Li;ZHENG Debing;YU Huanqing;ZHAO Chuanjiang

机构地区：[1]泛亚汽车技术中心有限公司,上海201208

出　　处：《上海汽车》2021年第11期57-62,共6页Shanghai Auto

摘　　要：基于DFSS理论方法,解决高强钢车身前纵梁Kick-down零件的边缘开裂问题。通过全流程IDDOV开发,结合大量不同预变形量的扩孔试验数据分析,制定边缘开裂极限评判标准,优化出解决边缘开裂最优的冲压工艺参数。准确预判了原工艺状态下零件边缘开裂的状态,同时优化的工艺方案使边缘应变值下降了25%,零件边缘开裂报废率从15%下降为0,成功解决了边缘开裂的问题。在高强度钢零件的同步成形分析中,要结合最大边缘应变极限评判标准,评价零件成形的边缘应变状态。Based on DFSS theory and method,the edge cracking problem of high strength steel body front rail Kick-down parts is solved.Through the whole process IDDOV development,combined with the analysis of a large number of different pre-stretching test data,the edge cracking limit evaluation standard is formulated,and the optimal stamping process parameters to solve the edge cracking are optimized.At the same time,the optimized process scheme reduces the edge strain value by 25%,and the scrap rate of the part edge cracking from 15%to 0,which successfully solves the problem of edge cracking.In the analysis of synchronous forming of high strength steel parts,the maximum edge strain limit criterion should be combined to evaluate the edge strain state of parts.

关 键 词：六西格玛设计 DFSS理念 高强钢 边缘开裂 冲压 预变形 

分 类 号：U466[机械工程—车辆工程]