用同心辅助球面法求两圆柱斜交相贯线的讨论

Discussion on Intersecting Line of Two Skew Cylinders Using Auxiliary Concentric Sperical Method

本文针对用同心铺助球面法求两圆柱斜交相贯线时遇到的问题,对如何确定作图时的最小球面半径进行了深入的讨论。定义了小圆柱分界直径φ_s和大圆柱轮廓素线分界长度L两个基本概念,并由此得出两种确定最小球面半径的原则,根据这两种原则,可以迅速;准确地完成相贯线的投影图。

When the intersecting line of two skew cylinders is solvel by means of auxiliary concentric spherical methol, the problem how to determine minimum drawing radius can be encountered.In this paper that problem large cylinder is discussed thoroughly.And the small cylinder separatrix diameter φs and Large cylinder contour line dividing length L ,two basic concepts,are defined .Thereby, two principles of determinating the less spherical adius are obtained. According to the principles, the pro eet drawing of intersecting lines can be made rapidly and exactly.