精密金属挤压椭圆型材偏心率参数与模腔优化分析  

Analysis of the Eccentric Ratio Parameter of the Ellipse Metal Extrusion Profile and Optimization of the Die Cavity

作　　者：齐红元[1] 朱衡君[1] 邱成[1] 徐趁肖[1] 肖春燕[1] 杜凤山[2] 刘才[2] 

机构地区：[1]北方交通大学 [2]燕山大学

出　　处：《模具工业》2001年第12期9-12,共4页Die & Mould Industry

摘　　要：针对非轴对称异型材挤压塑性流动及模腔研究的理论课题 ,借助于近代共形映射数学理论研究成果和塑性成形理论 ,建立椭圆型材精密挤压模腔和金属塑性流动的三维数学模型 ,由椭圆型材截面的偏心率参数变化 ,通过能量极值原理 ,进行挤压载荷比和优化模腔参数规律性分析 。In view of the theoretical task of studying the metal plastic fluid of non_symmetric extrusion profiles and the die cavity, with the contemporary mathematical theory achievement on conformal mapping and the metal plastic shaping theory, 3D mathematical models for the cavity of the ellipse profile extrusion die and for the metal plastic flow were built up. With the changing of the eccentric ratio parameter of the cross section of the ellipse profile and with the extreme value principle, an analysis was made on the rule of the extrusion load ratio and the parameters of optimizing the die cavity. It provides with technical support for rapidly and precisely realizing the goal of CAD/CAM integration for the ellipse profile extrusion die cavity.

关 键 词：椭圆型材 偏心率 挤压 挤压模具 CAD CAM 

分 类 号：TG375.41[金属学及工艺—金属压力加工]