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本文讨论了共轭曲线接触点公法线及其与节点重合点的运动问题,并根据公法线运动特征,修订了目前应用的高副与低副间的代换规则;给出了共轭曲线曲率半径图解的一般方法和解析方法;论证了博比利厄(Bobillior)法则是本文提出的曲率半径图解规则的特例。
In this paper, we discuss the common normals of conjugate curves and the motion of coincidence points with nodes. According to the movement characteristics of common normals, the substitution rules of high and low pairs are revised. The curvature of conjugate curves The general method and analytic method of radius graph are illustrated. The Bobillior rule is proved to be a special case of the curvature radii graph rules proposed in this paper.