滚压包边角度对包边件轮廓尺寸变动的影响  

Effect of hemming angle on dimensional deviation during roller hemming process

作　　者：伍俊棠[1] 赵亦希[1] 李淑慧[1] 席升印[2] 王斌锋[2] 王武荣[3] 

机构地区：[1]上海交通大学上海市数字化汽车车身工程重点实验室,上海200240 [2]上海大众汽车有限公司,上海201805 [3]上海大学材料科学与工程学院,上海200072

出　　处：《锻压技术》2010年第3期29-33,共5页Forging & Stamping Technology

基　　金：国家863计划资助项目(2007AA04Z145);上海汽车工业科技发展基金(0804)

摘　　要：机器人滚压包边是一种新型汽车车身制造工艺,主要应用于汽车车身四门两盖总成外板与内板的连接。四门两盖是汽车车身外表开启件,要求装配后与周围零件保持圆滑过渡和均匀间隙,包边后零件出现的尺寸变动(尺寸缩进和尺寸胀出)会直接影响零件装配精度。本文通过实验研究表明:包边件自由端的尺寸缩进大于中间部位;包边件轮廓在第1道包边过程中向内缩进,在终包边过程中向外胀出;最后道次的滚压角度增量越大,尺寸胀出的现象越明显。Robot roller hemming is a new technology in auto industry.It＇s mainly used to join inner and outer closures panels,such as car doors and deck lids.Since these closures are exterior autobody components,smooth fitting and uniform gaps between assembled components are critical concerned.The dimensional defects appeared in hemming process,namely roll-in and roll-out,could affect assembly accuracy.The experimental results show that dimensional deviation is more serious at the free edges than in the middle of the parts.Moreover,the profile tends to roll in during the first hemming step,while roll out during final hemming.And bigger hemming angle incremental in the last step may cause lager roll-out.

关 键 词：滚压包边 滚压角度 轮廓尺寸变动 尺寸缩进 尺寸胀出 

分 类 号：U466[机械工程—车辆工程]