工艺参数对三维非轴对称管件缩径旋压成形的影响  

Effect of forming parameters on the neck-spinning process of 3D non-axisymmetric tubes

作　　者：程秀全[1] 夏琴香[2] 

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

出　　处：《现代制造工程》2006年第12期13-16,共4页Modern Manufacturing Engineering

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

摘　　要：以6061T1(挤压态及退火态)铝合金为研究对象,探讨工艺参数对三维非轴对称管件缩径旋压成形的影响。结果表明,当材料状态及其他工艺参数相同时,与轴对称零件相比,偏心及倾斜类零件的极限名义缩径量要小得多;轴对称件所能采取的进给比下限最低,而倾斜件的进给比下限最高;当旋转圆角半径过小时,会使工件表面粗糙度值变大,甚至出现破裂现象;旋轮直径对极限名义缩径量的影响不大。当工艺参数选择不合理时,工件口部或起旋点附近易产生破裂现象,为危险截面所在位置。Investigating the tubes of 6061T1 aluminium treated by both the extrusion and anneal, the effects of forming parameters on neck-spinning process of 3D non-axisymmetric tubes are presented. The limit nominal reduction of the blank radius for offset and oblique tubes are much smaller than the reduction for axisymmetric tube;the lower limit of the axisymmetric tube is the minimum,and the oblique tube is the maximum;the smoothness of the workpiece surface worsens,or fracture occurs in the workpiece when the roundness of roller is over small ;the effect of the roller diameter on limit nominal reduction is slight. During 3D non-axisymmetric tubes neck-spinning, fractures occur near the opening end or the initial spinning zone of the workpiece under unreasonable parameters, where are the locations of the dangerous section.

关 键 词：旋压 偏心件 倾斜件 工艺参数 成形极限 

分 类 号：TH16[机械工程—机械制造及自动化]