带纵向内筋筒形件滚珠反旋工艺模拟和缺陷分析  

Process Simulation and Deflection Analysis of Tube with Longitudinal Inner Rib in Ball Backward Spinning

作　　者：许春停[1] 薛克敏[2] 李萍[2] 

机构地区：[1]中国电子科技集团公司第38研究所,安徽合肥230031 [2]合肥工业大学材料科学与工程学院,安徽合肥230009

出　　处：《河南科技大学学报（自然科学版）》2006年第4期9-11,21,共4页Journal of Henan University of Science And Technology:Natural Science

基　　金：黑龙江省留学归国基金项目(lc01c13)

摘　　要：通过对筒形件滚珠旋压工艺特点的分析,依据有限元原理建立了筒形件滚珠旋压反旋的三维有限元模型,用有限元软件对筒形件滚珠旋压工艺进行了数值模拟,分析了带内筋的筒形件滚珠旋压的变形机理及椭圆形端口和表面剥离缺陷产生的原因。分析认为,椭圆形端口是金属变形规律而产生的,因而是不可避免的;表面剥离主要是由于压力角较大而产生的,增大滚珠直径可以减少表面剥离缺陷的产生。The 3D finite element model of tube in ball backward spinning is founded through finite element analysis software based on the analysis of finite element method and process characteristics of tube ball spinning.Processing of ball spinning has been analyzed by FEM software,the forming mechanism of tube with longitudinal inner rib is studied and the causations of oval port as well as superficial peel-off of tube in ball spinning are analyzed.Because laws of metal forming cause oval port,it is inevitable in production.Bigger compressive stress angle brings about superficial peel-off.Choosing bigger ball diameter can reduce the phenomenon of superficial peel-off.

关 键 词：滚珠旋压 反旋成形 数值模拟 缺陷分析 

分 类 号：TG376.9[金属学及工艺—金属压力加工]