用逆投影法画工程截断体和相贯体的轴测图

Drawing of Axis Measure Map of Cut Solid and Mutual-transfixing Solid by Counter-Projection Method

画轴测图的方法很多 ,有坐标法、叠加法、切割法和特征面法等 ,但这些方法对画工程截断体和相贯体的轴测图存在着作图烦锁 ,且必须在投影图中要先把交线求出来后方能作轴测图 ,不易于掌握 ,现提出用逆投影法画截断体和相贯体的轴测图 ,方法简单 ,作图便利。

There are many methods for drawing axis measure map, for instance, coordinate method, superposing method, cutting method and featuring surface method and so on, but these methods for drawing axis measure map of both cut solid and solid transfixing each other are complex and one has to find out the cut line in projectional map befere drawing the axle measure map, these methods are not easy to be mastered, Now a simple and convenient method for drawing axis measure map of cut solid and solid transfixing each other by reverse projection is put forward.