由硬质合金刀组成的连续工作的刀排,能够在一次行程中完成不通螺纹的切削,该刀排装夹在螺丝车床的普通刀杆中。 切削螺纹时,每把刀切至螺纹后的空刀槽之后,在横向退出一个距离:使刀具继续纵向移动时,不致碰到螺纹后已经加工过的表面。第一把刀退出螺纹之后,第二把刀随即开始工 A continuously working knife row consisting of a carbide knife is able to complete threadless cutting in one pass, which is clamped in a common arbor of a screw lathe. When cutting a thread, each knife cuts to an empty pocket behind the thread and exits laterally by a distance that will allow the tool to continue to move longitudinally without touching the machined surface after threading. After the first knife exits the thread, the second knife begins to work immediately