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在车床上攻大直径螺孔时,由于扭矩大,丝锥不易夹紧,而且采用车床尾架安装丝锥,当卡头张开到最大程度时,有些丝锥仍无法装夹进去,若采用图示的刀架装夹丝锥攻大直径螺孔,即可收到满意的效果。其方法是:在刀架上加几块垫块,组合成适合丝锥方榫柄的方孔,将丝锥方榫柄插入方孔,周边均留几个微米的间隙,然后摇动手柄,进给刀架,即可攻丝。自动进给攻丝时,应使走刀与攻丝同步,这样即可安全、方便、省力地攻削大直径螺孔。
Tapping large diameter screw holes in the lathe, because the torque is large, the tap is not easy to clamp, and the use of lathe tails to install taps, when the chuck open to the maximum extent, some taps still can not be clamped in, if the icon Tapping tapping tapping large diameter screw holes, you can receive satisfactory results. The method comprises the following steps of: adding a plurality of pads on a knife holder to form a square hole which is suitable for a square tenon handle of a tap; inserting the square tenon handle of the tap into a square hole, leaving several millimeters of gaps around the handle, shaking the handle and feeding knife Rack, you can tap. Automatic feed tapping, should make the knife and tapping synchronization, so you can safely, easily and effortlessly tapping large diameter screw hole.