关于内螺纹中径三球量法的探讨

Study on Measurement of Pitch Diameter of Internal Thread by Three—ball Method

本文又提出了一种测量精密内螺纹的方法──三球量法，它是基于呈三角形分布的测量球与内螺纹牙型面间的空间几何关系，进行详细分析，进而建立相应的测量计算公式。

篒n this paper，a new method, which called the three ball method，is presented.In order to measure the pitch diameter of an internal thread from measured data，the in-teraction of the measuring ball and the thread groove are not neglected．In the method，numerically solving some non linear equation is necessary. The author derives the conciserelations among the parameters by rigorous analysis in the principle of three ballmethod.