五十年代以来,在研制新的圆分度器件方面取得了一些成果,其中很重要的一个因素是应用了平均效应原理,研制成功了一些诸如多齿分度的圆分度器件,大大地提高了分度的精度。为此人们对平均效应的理论发生了兴趣,有的从多齿分度台的生产工艺的角度解释平均效应理论;有的则从多齿分度台上下齿盘的旋转力矩总和的力学观点出发去解释多齿分度器件。笔者认为对多齿分度台的平均效应可以用车比雪夫不等式得到说明。它从数量上说明了 Since the 1950s, some achievements have been made in the development of new circular indexing devices. One of the most important factors has been the application of the principle of average effect. Some circular indexing devices such as multi-tooth indexing have been successfully developed, Degree of precision. To this end, people have an interest in the theory of the average effect, some explain the mean effect theory from the perspective of the manufacturing process of the multi-tooth indexing table, and others from the mechanical point of view of the total torque of the upper and lower chainring on the multi-tooth indexing table To explain the multi-tooth indexing device. The author thinks that the average effect on the multi-tooth indexing table can be illustrated by the ratio of Chebyshev inequality. It is quantitatively explained