本文讨论在阿基米德蜗轮加工时用公法线进行测量的新方法。本文首先从分析阿基米德蜗轮齿面特性出发,论述了阿基米德蜗轮公法线在蜗轮齿面上的唯一性,并推导了阿基米德蜗轮公法线计算公式;其次本文叙述测量阿基米德蜗轮公法线的必要测量条件,指出阿基米德蜗轮在加工时公法线长度变动量和进刀量之间存在线性关系,利用这个特性,在生产中可以解决三个实际生产问题,并从实际例子说明。 This article discusses a new method of measuring common normals at Archimedes worm gear machining. In this paper, starting from the analysis of Archimedes worm gear tooth surface characteristics, discusses the uniqueness of the Archimedes worm gear normals on the worm gear tooth surface, and deduces the calculation formula of Archimedes worm gear common normal; secondly, It is pointed out that there is a linear relationship between the normal length of the Archimedes worm gear and the amount of feed when machining the worm gear. By using this feature, three actual production problems can be solved in production, And from the actual examples.