本文在文献[1]关于摆线针轮啮合副齿形修正问题理论分析的基础上,进一步探讨了摆线针轮啮合副初始径向间隙的分布规律。根据摆线副在摆线针轮行星减速器等各种机械中的具体结构形式和受力情况,推导了其初始径向间隙与齿形修正量的数学关系表达式,为定性、定量分析和计算各类摆线副的工作性能提供了必要的理论依据。 In this paper, based on the theoretical analysis of [1] on the correction of gear pair meshing with cycloid pinwheel, the distribution of the initial radial clearance of the pinion pair of cycloid pinwheel is further discussed. According to the specific structure and force of the cycloidal pair in various kinds of machinery such as cycloid and planetary reducer, the mathematical relation expression of the initial radial clearance and the tooth correction is deduced. For the qualitative and quantitative analysis and Calculating the working performance of various types of cycloid provides the necessary theoretical basis.