试谈刀具切削部分几何角度实验教学方法的改革

Several Geometric Angles of the Blades of Cutting Tools An Experimental Teaching Method under Reformation Process

刀具几何角度是金属切削原理及刀具课教学中的一大难点 .本文提出 ,不采用传统的从制图学 (投影几何 )的角度来讲解这部分内容的方法 ,而是用数学 (矢量代数 )的观点来认识和讲述这个问题 ,可使讲授简洁明了 ,概念更加清楚深刻 ,加强本实验课程与数学基础课的联系 .

The geometric angle of the blades of cutting tools is one of the difficult (complex) concepts in teaching the theory of metal cutting and cutting tools. This essay doesn't explain the teaching methods of this part in the traditional way of graphics (Projection Geometry), but takes the mathematical point of view i.e.Vector Algebra to understand and explain this problem. This is to make the teaching simpler and more specific as well as to make the idea clearer and more meaningful (deep). This strengthens the links between the experimental course and basic mathematics.