A.5°~15° B.15°~20° C.20°~25°
A.0.05~0.1 B.0.1~0.15 C.0.15~0.3
A.兩主切削刃、三副切削刃 B.四主切削刃、一副切削刃 C.三主切削刃、二副切削刃 D.兩主切削刃、二副切削刃、一橫刃