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目前,国内设计制造的渐开线少齿差传动,普遍采用短齿(f_(?)=0.6～0.8),大变位系数(x>1.5)的内啮合齿轮副来实现无干涉连续传动。这不仅设计计算十分复杂,而且给制造也带来了一定困难,以致在一定程度上限制这种传动的应用和推广。本文结合我们在《少齿差减速零齿差输出矿用调度绞车》研制工作中的体会,着重阐述采用正常齿(f_(?)=1),压力角(α_(?)=20°)和小变位系数(x(?)1)的渐开线内啮合齿轮副,实现重合度大于1,完全没有干涉的少齿差传动的可能性和优越性。
At present, involute less differential transmission designed and manufactured in China generally adopts the internal gear pair with short gear (f_ (?) = 0.6 ~ 0.8) and large displacement coefficient (x> 1.5) to realize continuous transmission without interference. This not only design calculation is very complicated, but also brought some difficulties to the manufacturing, so to a certain extent, limit the application and promotion of this drive. In this paper, combining with our experience in the development of mine scheduling winch with few teeth difference decelerating and zero differential output, the paper discusses the relationship between normal tooth (f_ (?) = 1), pressure angle (α_ (20) Small variable coefficient (x (?) 1) of the involute internal gear pairs to achieve a coincidence greater than 1, there is no interference with the possibility of small tooth differential transmission and superiority.