借助数学模型突破截交线与相贯线的教学难点

Using Mathematical Model to Break the Teaching Difficulty of Interception Line and Intersection Line

为适应数控自动化机械操作的需要,改革传统机械制图教材;增加截交线、相贯线及其展开方程的介绍;力求提高学生的操作技能。

In order to meet the needs of CNC automatic mechanical operation, it needs to reform the traditional mechanical drawing materials,add intersecting lines and extended equation and improve the operational skills of students.