楔横轧椭圆轴直角台阶轧齐曲线  

Shaping curve of the right-angle step for a cross wedge rolling elliptical shaft

作　　者：胡发国[1] 王宝雨[1] 胡正寰[1] 

机构地区：[1]北京科技大学机械工程学院,北京100083

出　　处：《北京科技大学学报》2010年第4期520-524,共5页Journal of University of Science and Technology Beijing

基　　金：国家自然科学基金资助项目(No.50675019);国家科技支撑计划资助项目(No.2006BAF04B03);北京市自然科学基金资助项目(No.3082013)

摘　　要：根据楔横轧工艺的特点,推导了椭圆轴在轧齐过程中螺旋斜锥体大端半径随轧件转角变化的旋转公式.通过对轧齐过程的分析,获得了各阶段的体积公式,并依据体积平衡原理得到了椭圆轴直角台阶轧齐曲线.最后采用刚塑性有限元软件Deform-3D对椭圆轴的轧齐过程进行了模拟,取得了良好的结果,同时验证了曲线方程的正确性.A rotation formula which indicates the big end radius of the spiral declined cone changing with the rotation angle of rolled pieces for an elliptical shaft was proposed according to the process characteristics of cross wedge rolling.The volume formula for each stage was obtained by analyzing the shaping process.The shaping curve of the right-angle step in cross wedge rolling was derived from the volume balance principle.Finally,the shaping process of the elliptical shaft was simulated with the rigid-plastic FEM software Deform-3D.Excellent simulation results verified the correctness of the shaping curve.

关 键 词：楔横轧 椭圆轴 轧齐曲线 有限元法 

分 类 号：TG335.19[金属学及工艺—金属压力加工]