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叙述了钻头顶角、后角、横刃角等对钻削性能的影响以及加工不同材料时这些角度的合理选择;并对钻头的各种刃磨方法与修磨横刃(S形、X形、N形)的方法作了介绍。——编者一、钻头的角度影响钻头切削性能的因素很多,以钻头几何参数为例,有:顶角、后角、横刃角、螺旋角、钻心厚度等。这些因素对钻头的进给率、寿命、切屑的排除、钻孔的精度有直接的影
Describes the influence of the bit top angle, relief angle and chisel angle on the drilling performance and the reasonable choice of these angles when processing different materials. The methods of sharpening the sharpening bit and the grinding chisel (S shape, X shape , N-shaped) method is introduced. - Editor First, the angle drill bit cutting performance of many factors, the drill geometry parameters, for example, there are: top angle, after the angle, horizontal edge angle, helix angle, thickness and so on. These factors have a direct impact on the feed rate of the drill bit, life expectancy, the exclusion of chips, the accuracy of drilling