钻头的检验和重磨后的检验,实际上是要检查钻尖角、横刃修磨情况及横刃是否在钻心位置(左右是否对称)。作为钻头质量项目之一的切削刃对称度,及其对轴心线的法向跳动,要通过图1～4所示的方法来检验。重磨后的检验,不但要用图5所示的角度样板,而且要用图6所示的方法进行检查。 Drill bit inspection and inspection after re-grinding, in fact, is to check the drill tip angle, horizontal edge grinding situation and whether the chisel edge position (whether the symmetry). Cutting edge symmetry, as one of the drill quality items, and its normal runout to the axis, are verified by the methods shown in Figs. 1-4. After the refurbishment of the test, not only to use the angle shown in Figure 5 model, but also to use the method shown in Figure 6 to check.