中文摘要：

为了得到能够准确高效计算冷滚打成形实体零件外齿形的成形力和整体金属塑性变形情况的数值模拟方法,根据冷滚打成形的基本原理,建立了能够表征冷滚打成形实体零件外齿形特点的典型有限元模型,并参照实验条件进行了实例计算。所得计算结果与实验相比较,证明了该计算模型和方法能够有效反映出稳定成形时主成形力的平均峰值。同时金属塑性变形的计算结果能有效反映冷滚打成形齿形时的金属变形情况,能够预测和解释外沿飞边和纵向的弓形缺陷的发生。在此基础上研究了提高数值计算效率的方法,得出质量缩放因子取60 000、最小单元格长度0.25mm时可获得较高的计算效率。

英文摘要：

To get an accurate and efficient numerical simulation method of forming forces and the overall metal plastic deformations of the external tooth cold roll-beating forming,based upon the basic principles of cold rolling forming,a typical finite element model was established to characterize external tooth cold roll-beating forming,and the example was calculated according to the experimental conditions.The culculation results compared with the experimental ones,it is shown that this calculation model and method may describe the main forming force average peaks in stable forming.Meanwhile the calculation results of metal plastic deformations may effectively reflect tooth formations of cold rolling forming,predict and explain the occurrences of the flashes on the edges and the bow defects.Then,the method was investigated to improve the efficiency of the numerical calculation,the higher computational efficiency may be obtained when the mass scaling factor is as 60 000 and the minimum element length is as 0.25 mm.