摘要：运用空间啮合原理推导渐开线蜗轮齿面及单位法矢方程式，并进行实例计算与齿面验证；对蜗轮齿面进行测量前的网格划分，得到网格点坐标值及单位法矢值。

关键词：渐开线蜗轮；空间啮合原理；齿面网格化

中图分类号：TH132.44；TH161+12文献标志码：A

Modeling and Measurement Point Calculation of Involute Worm Gear Surface Mesh 

Yang Tao，Lao QichengAbstract:The principle of spatial meshing is used to derive the tooth surface equations and the unit normal vector equation of the involute worm gear.A case is calculated and the tooth surface is verified.The tooth surfaces of the worm gear are meshed before the measurement to calculate the coordinate value of the measuring grid and the unit normal vector coordinates.

Keywords:involute worm gear；principle of spatial meshing；gears′tooth surfaces meshing