重卡顶盖边梁拉伸起皱的改善  

Improvement of Drawing Wrinkle for the Heavy Truck Roof Inner Beam Side

作　　者：王乐勇 余浪 高秀波 刘大壮 

机构地区：[1]潍柴动力上海研发中心,上海201114

出　　处：《模具制造》2018年第12期20-22,共3页Die & Mould Manufacture

摘　　要：重卡顶盖边梁由于有较大弯曲,在拉伸过程中会在弯曲部位材料聚集产生皱褶。为防止拉伸过程中材料聚集隆起,在拉伸模结构中增加了上压料器。但在拉伸结束时上压料器回程会将零件压变形,为解决该问题,上压料器的压力源选择有延时回程功能(闭锁)的氮气弹簧。Due to the large bending of heavy truck roof inner beam side,wrinkling will occur in the bending part of the material being accumulated during drawing.In order to prevent the material from wrinkling during the drawing process,an upper pressure pad is added to the drawing die structure.But at the end of drawing,the return stroke of the upper press will deform the parts.To solve this problem,the pressure source of the upper press will choose the nitrogen spring with delay return function (locking).

关 键 词：顶盖边梁 氮气弹簧 拉伸起皱 延时回程 

分 类 号：TG385.2[金属学及工艺—金属压力加工]