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在六角车床(水平轴)上切削端面,刀具的前角和后角是在变化着的,这和变化给刀具的刃磨带来很大困难,若操作者不能合理的选择后角,必然会使刀具寿命显著降低。现在介绍一种合理选择刀具角度的计算方法: 附图中D是圆盘刀架直径,d是工件直径,如果车刀沿着AB直线前进,则通过工件中心,角度不发生变化,这时y=0、在a_16～8°之间,是最合理的后角。实际情况并不是这样,而是刀尖从C点切入沿CO_1前进,这时刀具的前面就是C点的
In the hexagonal lathe (horizontal axis) cutting face, the tool rake and relief angle is changing, and this change to the tool sharpening very difficult, if the operator can not be a reasonable choice of the relief angle, the inevitable will The tool life is significantly reduced. Now introduce a reasonable choice of tool angle calculation method: Figure D is the diameter of the disk turntable, d is the workpiece diameter, if the tool along the AB straight forward, then through the workpiece center, the angle does not change, then y = 0, between a_16 ~ 8 °, is the most reasonable posterior horn. The actual situation is not the case, but the tip cut from C to move along CO_1, then the front of the tool is C