Cut off should use cut off a knife. Cut off the appearance of the knife and grooving knife likeness, but because narrow and knife head is long, break off very easily. Cut off a method commonly usedly to have lend knife law two kinds into law and left and right sides continuously, if pursue,1 is shown. Take a way continuously commonly used at cutting off cast-iron wait for brittleness material; Or so law borrowing a knife is commonly used wait for plasticity material at cutting off steel. Graph 1 the following should notice when cutting off a method: 1) is cut off undertake on chuck commonly, if pursue,2 are shown. Of workpiece cut off place should be apart from chuck some closer, avoid to be cut off on the workpiece of top installation. Graph 2 2) is cut off to cut off knife point of a knife to must wait with work center on chuck tall, cut off place general remnant to have protruding station otherwise, and knife head damages easily also (graph 3) . Graph 3 cut off knife point of a knife to must wait with work center tall 3) the length that cuts off a knife to reach tool carrier does not grow too, feed wants slow and even. When will be being cut off, must speed of rein in feed, lest knife head breaks off. 4) cuts off steel when need adds cutting fluid to undertake cooling lubricating, cut cast-iron when do not add cutting juice commonly, but can undertake cooling lubricating with kerosene when necessary. When two top workpiece cut off 5) , cannot cut a center directly, in case lathe tool breaks off, workpiece flies off. CNC MillingCNC Machining