导出了一般化的角修形条件,解释了角修形的物理意义;提出啮合分析的法截面法,该方法可以用来计算奇异啮合点附近共轭齿面偶的法向距离;运用该方法,通过分析法截线,指明角修形传动蜗杆螺旋面、蜗轮齿面名义原接触区、新接触区三者沿传动副瞬时接触线奇点轨迹相互交叉,说明三者虽然相互密切,但程度不同;阐明角修形切去蜗轮齿面二次接触区,并且使得蜗杆工作长度变短的机理.在角修正型二包传动啮合理论的指导下,对角修形双圆环面二包传动的啮合特性进行了深入系统的研究,发现这是一种性能优良的新型环面蜗杆传动装置. The generalized angular modification condition is derived and the physical meaning of angle modification is explained. A method of meshing analysis is proposed, which can be used to calculate the normal distance of the conjugate tooth surface even near the singular meshing point. By using this method , Through the analysis of the method of cross-line, the specified angle modified worm screw surface, the worm gear tooth nominal contact area, the new contact area along the transmission line instantaneous contact line singularity trajectory cross each other, indicating that although the three close to each other, but the extent The mechanism of cutting off the secondary contact area of ​​worm gear tooth surface and shortening the working length of the worm gear is clarified.Under the guidance of angle-correct two-package transmission meshing theory, In-depth study of the meshing characteristics found that this is a new type of performance excellent toroidal worm drive.