锻压技术

热收口成形对模具寿命影响的研究

英文标题：Research on the die life under the influence of hot shell nosing

作者：张志明吴歆符韵赵志祥

单位：中国兵器工业第五九研究所中国兵器工业第五九研究所中国兵器工业第五九研究所中国兵器工业第五九研究所重庆400039 重庆400039 重庆400039 重庆400039

关键词：热收口模具寿命摩擦有限元分析

分类号：TG315.2

出版年,卷(期):页码：2007,32(1):59-61

摘要：

厚壁筒形件在热收口成形时,由于变形抗力大,工件对模具产生剧烈摩擦,导致在生产过程中模具寿命低。本文通过力学分析,并应用有限元分析软件DEFORM对热收口过程进行数值模拟,最终采用了减小入模角的方法对热收口上模进行了优化设计,从而避免了成形过程中模具表面的应力集中。通过工艺试制,优化设计后的热收口模具明显提高了使用寿命。

The thick-wall shell-shape part has a strong resistance in the process of hot shell nosing,so the die life is low during the process of production resulting from the friction by part.The FEM software DEFORM is used to numerical simulation of this process by mechanical analysis.Finally,top die after optimization is used to avoid the stress concentration in surface of die by reducing the enter-die angle during process of forming.The life of die after optimization is obviously increased by process test.

基金项目：

参考文献：

[1]Lahoti G D,Subramanian T L,Altan T.Development of acomputerized mathematical,model for the hot/cold nosing ofshells[C]Contract Report ARSCD-CD-78019,Battelle Co-lumbus Laboratories,1978.
[2]Ming Ching Tang,May Hsu,Shire Kobayashi,Analysis ofshell nosing process mechanics and preform design[J].In-ternational Journal of Machine Tools Des.Res.,1982,22(4):293 307.
[3]Shire Kobayashi,Appoximate solutions for preform design inshell nosing[J].Int.J.Mach.Tool Des.Res.,1983,23(2 3):111 122.
[4]Hwang S M,Kobayashi S.Preform design in shell nosing atelevated temperatures[J].International Journal of MachineTools and Manufacture,1987,27(1):1 14.
[5]陈如欣,胡忠民.塑性有限元及其在金属成形中的应用[M].重庆:重庆大学出版社,1989.
[6]吕炎,等.锻压成形理论与工艺[M].北京:机械工业出版社,1991.
[7]周杰,尹红灵,伍驭美,等.摩擦对收口的影响研究[J].锻压技术,2001,(1):39 41.

服务与反馈：

【文章下载】【加入收藏】