提出了HFT法加工准双曲面齿轮的齿根过渡曲面的解析表达 ,通过计算机数值仿真方法 ,生成了精确的轮齿模型 ,得到被切齿轮的实际齿高和根锥 ;并通过迭代循环设计 ,获得了既能保证设计齿高和根锥 ,又能保证设计要求和啮合质量的整套机床调整参数。进一步结合根切和齿顶干涉检验 ,建立了完整的几何设计、分析和仿真软件系统。 The analytic expression of tooth root transition surface of hypoid gear was proposed by using HFT method. The accurate gear tooth model was generated by computer numerical simulation method, and the actual tooth height and root cone of the cut gear were obtained. Through iterative cycle design, A complete set of machine adjustment parameters was obtained that ensured both design tooth root and root cones, as well as design requirements and engagement quality. Combined with root and top interference test, a complete geometric design, analysis and simulation software system was established.