非轴对称管件缩径旋压的数值模拟与参数优化的研究  

The study on the numerical simulation of non-axisymmetric tube neck-spinning and process parameters optimization

作　　者：程秀全[1] 冯万林[2] 夏琴香[2] 

机构地区：[1]广州民航职业技术学院机务工程系,广州510403 [2]华南理工大学机械工程学院,广州510640

出　　处：《塑性工程学报》2008年第4期61-66,共6页Journal of Plasticity Engineering

基　　金：国家自然科学基金资助项目(50275054);广东省自然科学基金资助项目(020923);广东省工业科技攻关计划资助项目(2003C102013)

摘　　要：针对具有两个回转轴线的三维非轴对称薄壁空心管件,通过数值模拟与正交试验相结合的方法,研究主要成形工艺参数(偏移量、倾斜角、名义压下量、进给比、旋轮圆角半径、旋轮直径)对成形尺寸精度(壁厚偏差、椭圆度和直线度)的影响显著性的主次顺序;根据影响规律给出了几组较好的工艺参数组合,然后利用灰色决策理论进行了效果测度,分别得到了偏心类和倾斜类管件缩径旋压成形的最优工艺参数组合。Aiming to the non-axisymmetric thin-walled tubes with two rotational axes,combining the numerical simulation and orthogonal design,the principle sequence of the effect of main forming parameters including offset amount,oblique angle,nominal reduction of blank radius,feed ratio,roundness radius and diameter of roller on the dimension precision of spun tubes,such as thickness deviation,ellipticity and linearity had been investigated.Several sets of reasonable parameters are obtained and the efficient measure of dimension precision had been studied by the gray decision theory.Two different sets of optimization parameters of offset and oblique tubes spinning process are obtained.The scientific datum is presented for the 3D non-axisymmetric thin-walled tubes spinning.

关 键 词：非轴对称管件 缩径旋压 数值模拟 正交设计 灰色决策 参数优化 

分 类 号：TG386.43[金属学及工艺—金属压力加工]