多平面截割平面立体截交线画法研究

Multi-plane Three-dimensional Intersecting Line Drawing Method

截交线作为形体表面交线之一,是《机械制图》教学的重点和难点,多平面截割以单平面截割为基础,是单平面截割的扩展和延伸。文章介绍了多平面截割平面立体的基本思想、画法步骤、三种有效方法及注意的问题。

As one of intersecting lines on body surface,intersecting line is the key and difficult teaching point.Multi-plane intersection is based on monoplane intersection,and is the expansion and extension.The article introduces the basic idea,painting steps,three effective methods,and the problems that should be given attention to.