“角度分度”是分度头分度的主要方法之一,一般应用公式n=θ/9来计算。但当遇到工件角度带有分、秒数值时,用因式分解计算分度板孔圈,就比较麻烦,甚至难以计算。针对这个问题,我们在“圓周精密分度表”(国防工业出版社出版)一书中, 摘取分度板22排孔圈的分度值T,经计算整理 “Angle indexing” is one of the main methods of indexing the indexing head, which is generally calculated using the formula n=θ/9. However, when the workpiece angle is measured with points and seconds, calculating the index plate hole circle by factorization is more troublesome and even more difficult to calculate. In response to this problem, in the book “Circular Precision Indexing Table” (published by the National Defense Industry Press), we took the index value T of the hole circle of the index plate 22 and calculated