标准麻花钻的刃磨方法研究

Research on Dressing Method of Standard Twist Drill

实践教学中,学生不能较好的完成钻头刃磨课题,降低了学生的学习兴趣。在教学中采用口诀法和示范法演示的方式讲解标准麻花钻切削部分之间的关系,学生掌握效果练好。

In practice teaching, students could not complete the course of dressing twist drill, which lowers the stu-dents' interest. It is demonstrated that students have a good knowledge of relations between cutting parts of standard twist drill by pithy formula and demonstration.