渐开线行星传动在现代机械工程中得到了广泛的应用。因此,在日常的设计中常常遇到有变位渐开线行星齿轮齿顶圆尺寸的计算问题。在此,以最常见的2K—H(如图示)进行探讨。 1.存在的问题行星传动的齿轮采用角变位设计中,在选择变位系数时,往往只从提高齿轮接触、弯曲强度、防止根切、配凑中心距等主要方面进行考虑,而没有对经过角变位后进一步考虑顶圆尺寸产生的后果,这样就会导致采用一些不正确的设计计算方法:行星轮与太阳轮相啮合时,得出一个行星轮齿顶圆尺寸,行 Involute planetary drive in modern mechanical engineering has been widely used. Therefore, in the daily design are often encountered with variable involute planetary gear addendum circle size calculation problem. Here, the most common 2K-H (as shown) to explore. 1. The existing problems Planetary gears with angular displacement design, the choice of displacement coefficient, often only from improving gear contact, bending strength, to prevent the root cut, with the center distance and other major aspects of consideration, but not right After cornering, further consideration is given to the effect of the top circle size, which results in some incorrect design calculations: When the planet wheels mesh with the sun gear, the top circle size of the planet gears results in a