TWB汽车覆盖件成形工艺参数优化  

Research on forming process parameters optimization of TWB for automobile cover panel

作　　者：蒋磊 李十全 王龙 王大鹏 马培兵 张雄飞 JIANG Lei;LI Shiquan;WANG Long;WANG Dapeng;MA Peibing;ZHANG Xiongfei(Dongfeng Honda Automobile Co.,Ltd.,Wuhan 430056,CHN)

机构地区：[1]东风本田汽车有限公司新车型中心,湖北武汉430056

出　　处：《制造技术与机床》2022年第8期122-128,共7页Manufacturing Technology & Machine Tool

基　　金：国家自然科学基金面上项目(51975439,51675392);中国汽车产业创新发展联合基金(U1564202)。

摘　　要：针对TWB汽车覆盖件成形裕度不足,焊缝区域拉延易开裂问题,以应用TWB的某车型前门内板为研究对象,采用试验法与有限元分析相结合的方式,基于正交试验快速筛选出造成前门内板拉延焊缝区域开裂的主要工艺参数,分析了主要工艺参数对前门内板成形性的影响规律。以焊缝区域最大减薄率为评价项目,依次研究了压边力B.H.F.、摩擦系数μ、第一刺破刀高度H1、第二刺破刀高度H2和薄板宽度W对前门内板成形质量的影响。运用极差和方差分析,确定了各工艺参数对焊缝区域最大减薄率影响的主次顺序以及工艺参数取值为:B.H.F.=1000 kN,μ=0.13,W=1044 mm,H2=11 mm,H1=10 mm。利用最优工艺参数组合对前门内板进行成形仿真,并在此基础上进行试模验证,获得了成形质量良好、具有较高裕度的零件,焊缝区域最大减薄率为19.1%,满足质量判断标准。Aiming at the problem that the forming margin of the TWB automotive cover panel was insufficient and the welding area was easy to crack,the front door inner panel of a certain model was used as the research object,and the method of combining the test method and finite element analysis was adopted,and the main process parameters causing the cracking on the welding seam area of the front door inner panel were quickly screened out based on the orthogonal test,and the influence of the main process parameters on the formability of the front door inner panel was analyzed.Based on the evaluation of the maximum thinning rate of the welding seam area,the effects of the blank holder force B.H.F.,the friction coefficientμ,the height of the first piercing cutter H1,the height of the second piercing cutter H2,and the width of the thinner sheet W on the forming quality of the front door inner panel were studied in turn.Using the analysis of variance and range,the primary and secondary order of the influence of each process parameter on the maximum thinning rate of the welding seam area was obtained,and the value of the process parameters were:B.H.F.=1000 kN,μ=0.13,W=1044 mm,H2=11 mm,H1=10 mm.The forming simulation of the front door inner panel was carried out by the optimal combination of process parameters,the die tryout verification was carried out on this basis,and the parts with good forming quality and high margin were obtained,the maximum thinning rate of the weld area was 19.1%,which met the quality judgment standards.

关 键 词：TWB 汽车覆盖件 成形工艺 前门内板 正交试验 极差分析 方差分析 

分 类 号：U466[机械工程—车辆工程] TG386[交通运输工程—载运工具运用工程]