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提出了圆柱与圆锥正交、圆锥与球偏交、圆柱与球偏交等三种情况下确定相贯线上特殊点的数学模型及相应的作图法，为实现回转体相贯线的计算机辅助绘图提供了理论基础，为实际工程应用提供了一种快速精确的作图方法．
In this paper, a mathematical model to determine the special point on the intersecting line and the corresponding drawing method are put forward under three kinds of situations: the orthogonal intersection of the cylinder with the cone, the deviation between the cone and the ball, the deviation between the cylinder and the ball, etc. In order to realize the computer Auxiliary drawing provides the theoretical basis for practical engineering application provides a fast and accurate mapping method.