内孔的键槽通常采用刨床或插床进行加工。对于小孔内的键槽加工颇感困难。为此,我厂自制了专用的键槽推刀(附图),把刀具夹持在车床的刀架上,用车床推削出键槽,获得了较好的效果。其方法是用卡盘夹紧工件(工件不转动),把推刀装在刀架上,对好中心,利用中拖板作径向进刀,用摇动大拖板进行推槽,即可推削出合格的键槽。用此法在直径小于14毫米的内孔中加 The keyway of the inner hole is usually processed by a planer or a slotting machine. For the keyhole processing holes quite difficult. To this end, our factory made a special key slot push knife (with photos), the tool holder in the lathe turret, with a lathe push out the keyway, get better results. The method is to clamp the workpiece with the chuck (the workpiece does not rotate), the push knife mounted on the turret, the right center, the use of the drag plate for radial feed, with a large sliding plate to push the slot, you can push Cut out the qualified keyway. Use this method in the diameter of less than 14 mm hole plus