一、引言齿轮造型与理论尺寸的误差直接影响对齿轮的有限元分析和齿轮产品的CAM制造精度,目前对工程中常用的渐开线圆柱齿轮的三维造型理论与方法,在齿根过渡曲线处仍采用近似的圆弧代替,变位齿轮的造型仍为空白,势必会直接影响对齿轮的弯曲强度校核的准确性。本文结合渐开线圆 I. INTRODUCTION The error of gear shape and theoretical size directly affects the finite element analysis of gears and the CAM manufacturing precision of gear products. At present, the three-dimensional modeling theory and method of involute cylindrical gears commonly used in engineering are analyzed. Still use the approximate arc instead, the displacement of the gear shape is still blank, is bound to directly affect the accuracy of the gear bending strength check. This article combines involute circles