ABSTRACT

The cutting conditions in machining usually refer to those variables that are easily changed at the machine tool by the operator and that affect the rate of metal removal. There are five basic types of machine tools: lathe or turning machine; drilling or boring machine; shaper or planer, milling machine; and grinder. The product of the speed, feed, and depth of cut determines the rate of metal removal, which is expressed as cubic inches per minute. Grinding machines can produce any of the surfaces that the four basic machine tools can produce and with much better surface finishes and greater accuracy, but with correspondingly reduced rates of metal removal. As is true of the angles, end-cutting-edge angles of this magnitude have no influence on the relationship between cutting speed, constant tool life. The derivation of this fundamental machinability equation. In addition to influencing the machinability of a material, the mechanical properties help determine the type of chip formed during machining.