多点成形压力机的反复成形技术研究  

Study on Iteratively Forming Technology in Multi-point Forming Press

作　　者：付文智[1] 李明哲[1] 严庆光[1] 隋振[1] 金昕[2] 

机构地区：[1]吉林大学辊锻工艺研究所 [2]北华大学机械工程学院

出　　处：《农业机械学报》2004年第2期126-128,共3页Transactions of the Chinese Society for Agricultural Machinery

基　　金：国家自然科学基金资助项目 (项目编号 :5 0 2 75 0 63 );国家"十五"重点科技攻关项目 (项目编号 :2 0 0 1BA2 0 3 B11)

摘　　要：基于对多点成形过程的分析 ,推导了反复成形过程中基本体对板材的作用力分布 ,得到了基本体作用力与成形力矩的关系。从理论上分析成形件内部残余应力的分布 ,解释了反复成形法减小回弹的机理 ,讨论了反复成形法对成形零件质量的影响。Multi-point forming principle, the forming course in multi-point forming press(MPF) are introduced in this paper. Based on the analysis of the forming course in MPF, the force distribution of sheet metal exerted by the force element in the course of MPF was reasoned and the relation between force element applied on metal sheet and forming bending moment was obtained. The distribution of the residual stress inside the forming parts was analyzed theoretically and the mechanism of reducing spring-back was expounded. Affection of iteratively forming method on forming part quality was expounded.

关 键 词：多点成形 压力机 反复成形 基本体 作用力 成形力矩 零件质量 残余应力 板材 冲压成形 回弹 

分 类 号：TG385.1[金属学及工艺—金属压力加工]