人们往往忽视对刃磨后的钻头进行研磨,钻头和其它刀具一样,手工刃磨后切削刃通常不够平滑光洁,用放大镜观察,可以发现刃口上凸凹不平,有锯齿状,这样的钻头直接影响使用寿命。对于硬质合金钻头,在加工时还容易产生掉渣和崩刃现象,根据我们多年使用钻头的体会,φ15以上钻 People often neglect to grind the sharpened drill bit. The drill bit is the same as other tools. The cutting edge is not smooth and smooth after manual sharpening. When viewed with a magnifying glass, it can be found that the cutting edge is uneven and jagged. Such a drill directly affects the use life. For the carbide drill, the processing is also prone to slag and chipping phenomenon, according to our many years of experience using the drill, drill more than φ15