The apparatus and method for testing the thrust and torque on the main cutting edge and chisel edge of drill point was introduced. 通过试验测试了任意形状钻头切削刃的轴向力和扭矩,为钻头受力预测提供了一套完整的研究方法。
The conical grinding method has four grinding parameters, and for three drill point geometric parameters, the lip clearance angle, chisel edge angle and point angle, the flank configuration is not unique. 麻花钻锥面刃磨方法有4个刃磨参数,当给定外缘转点的结构圆周后角、横刃斜角、锋角这3个结构参数时,后刀面的形状并不唯一。
Investigation on the chisel properties of plane& enveloping drill point grinding method 平面包络刃磨横刃形成特性的研究