准双曲面齿轮冷摆辗加工新方法及其数值模拟

A New Type Cold Rotary Forging Method for Hypoid Gear and Its Numerical Simulation

针对目前准双曲面齿轮冷摆辗技术存在模具结构复杂、摆辗力相对较大等问题,提出了一种新型的冷摆辗方法。该方法简化了模具结构,采用局部线接触连续塑性成形。基于刚塑性有限元法基本理论,借助通用三维有限元软件DEFORM-3D对准双曲齿轮摆辗成形全过程进行了三维动态分析,研究了速度场量、接触区以及模具受力的分布和变化规律。研究结果揭示了准双曲面齿轮冷摆辗的变形规律。

At present,the cold rotary forging technology of hypoid gears existed problems such as very complex die structure and bigger rotary forging force,therefor the authors put forward a new type cold rotary forging technology.The method simplified the die structure,adopted the local line contact continuous plastic forming.Based on the basic theory of rigid-plastic finite element （FE） method,a three-dimensional dynamic FE simulation model of the whole process of hypoid gear cold ro-tary forming was analyzed by means of a common three-dimensional finite element software Deform-3D V6.0.The distribution and variation laws of velocity field,contact zone and die stress were inves-tigated.The results of this research reveal the deformation mechanism of cold rotary forging for hy-poid gears.