筒形件冲压缩口成形工艺研究  

Research on Stamping-Necking Process of Barrel-type Piece

作　　者：刘波[1] 刘宏杰[2] 

机构地区：[1]广西机电职业技术学院机械工程系,广西南宁530007 [2]漯河职业技术学院机电工程系,河南漯河462000

出　　处：《热加工工艺》2009年第13期84-87,共4页Hot Working Technology

摘　　要：应用ANSYS有限元分析软件建立了筒形件冲压缩口成形工艺模具的三维有限元模型,利用软件中的显式动力学求解器模拟了筒形零件缩口成形工艺过程中应力、应变和位移流向的分布云图,分析了工件成形时的塑性变形特点及其对成形质量的影响关系。研究表明:筒形件冲压缩口成形工艺主要失效形式是缩径区的裂纹、定径区的起皱和传力区部分的失稳等;冲压缩口力随着摩擦系数和模具锥角的增大而增大,但是会随着模具型腔内圆角半径的增大而减小。因此,有限元分析的结果为进一步研究冲压缩口的变形机理奠定了基础,也为其成形工艺方案的制定提供了理论指导。Using the finite element analysis sofhvare ANSYS to establish the finite clement model of forming die for the barrel-type piece. The explicit dynamic finite element method can be used effectively to analyze the distribution of stress, strain and displacement in the stamping-necking process of barrel-type pieceare, the relations between the forming quality and the plastic deformation behaviour of the workpiece. The study shows that the main failure modes of stamping-necking process of barrel-type piece are crackes, crinkle and instability; the necking force increases with the increase of friction coefficient and die angle; the flecking force decreases with the increase of the fillet radius of die＇s brim. The finite element analysis result may provide theoretical basis for research of plastic deformation mechanism of stamping-necking and theoretical direction for its forming plan.

关 键 词：筒形零件 缩口工艺 数值模拟 

分 类 号：TG306[金属学及工艺—金属压力加工]