The widespread increase in the quantity of production requiring a multiplicity of operation such as, milling, facing, boring, grilling has led to the development of a method of manufacture known as transfer machine. A transfer machine consists of several machining heads, or units fastened together by conveying units, the whole constituting one automatic installation. In short, a transfer device is a combination of arranged and integrated with interlocked controls and a transferring device to form an automatic machine. The term transfer refers to the transfer of the job from machining station to the next as it proceeds through the machining processes involved. Components are loaded at one end and completed workpieces leave the transfer line at the other end.
Application of transfer machining leads to increase in productivity, and reduces the number of machine tools and floor space by 30 to 50 percent. Transfer machining also leads to better quality and reduced manufacturing cost