以啮合理论为基础，导出了蜗式凸轮机构从动件(即分度转盘)在凸轮实际轮廓和实际机构尺寸诸因素的影响下，分度误差的计算公式。

Based on meshing theory, a formula is derived for calculating index error of worm-type CAM follower (i. e. Tindex plate) under influence of actual worm-type CAM profile and dimensions.

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并结合实例，运用变形梯形加速度运动规律，通过微机计算，得出了该凸轮机构从动件的分度误差曲线。

With an example given, index error curve is obtained by applying acceleration law of deformed trapeze on a computer.

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