多点压板成形技术及其板料冲压成形工艺  

The multi-point pressing and forming technology and its stamping process

作　　者：宋爱平[1] 王隆太[1] 陈婷[1] 李鹭扬[1] 

机构地区：[1]扬州大学机械工程学院,扬州225009

出　　处：《塑性工程学报》2008年第5期108-114,共7页Journal of Plasticity Engineering

基　　金：江苏省高校自然科学研究计划项目(04KJB460165);扬州市扬州大学合作基金项目(YZ2006054-4)

摘　　要：板料在冲压成形过程中常出现起皱现象,这是板料受压失稳的结果。论文提出一种新型的多点压板成形冲压技术,板料在冲压成形过程中,板料的上、下面受弹性压板力的约束,从而可以提升板料的失稳临界应力,减少板料的受压屈曲与起皱。同时研制一种可重构的杆系柔性成形模具,实施多点压板成形冲压工艺。试验表明,这种新型模具可以实施快速重构,同时可以有效地控制板料的起皱,特别适用于中小批量曲面板件的冲压成形加工。Wrinkling often occur in the sheet metal forming processes, it is the result of the compression buckling. “Multi-point forming and pressing” technique was explored that can improve the sheet stability and reduce the wrinkling of the sheet metal forming processes. Sheet metal is restricted by the elastic pressing force putting on the upper and lower surfaces of sheet in stamping. Based on the technique, reconfigurable poles flexible die was developed. The die can be used to implement the stamping processes of “multi-point pressing and forming”. The results of tests indicated that the die can be reconfigured quickly and suppress the wrinkling of sheet. Multi-point pressing and forming technology provides a practical and effective way for the curved sheet metal forming. It is especially applied to form the sheet metal parts with middle-small batch.

关 键 词：冲压工艺 起皱 可重构 模具 

分 类 号：TG386[金属学及工艺—金属压力加工]