摆辗镦挤成形的上限分析  

AN UPPER BOUND ANALYSIS FOR SIMULTANEOUSBACKWARD EXTRUSION-UPSETTING BY ROTARY FORGING

作　　者：伍太宾[1] 胡亚民[1] 任广升[1] 张承鉴 

机构地区：[1]西南技术工程研究所,机械部北京机电研究所,吉林工业大学

出　　处：《塑性工程学报》1996年第1期11-19,共9页Journal of Plasticity Engineering

摘　　要：本文应用上限法对圆柱体自由摆辗镦挤成形过程的力能参数和变形规律进行了分析研究，变形区域由接触变形区、非接触变形区和塑性铰组成，并建立了相应的动可容速度场。通过优化计算，获得了摆辗镦挤变形力、反挤压高度随着坯件高度压下量、摆头每转压下量、坯件与模具接触面上的摩擦的变化而变化的关系。The calculation of force and energy and the deformation in the process of simultaneous backwardextrusion-Upsetting by rotary forging a investigated by means of the upper bound method. The deformationregion is composed of the contacted deformation region. The uncontacted deformation region and the plastical hinge. The kinematically admissible velocity field is established. By optimum, calculation, the effects of the reduction in height of blank. Draft per oscillation of upper die and lubricating condition on the force and the backward extrusion height are obtained.

关 键 词：摆动辗压 镦挤成形 压力加工 

分 类 号：TG316.11[金属学及工艺—金属压力加工]