A Numerically Controlled Manufacturing System

The process of machining a finished part from a numerical description involves a number of data processing steps, as well as the actual metal cutting operations. The approach to accomplishing this purpose is generally organized in two major groups of equipment. One group consists of a general-purpose digital computer with associated input and output equipment. The second group of equipment consists of electronic machine control units, electrohydraulic servo drives, feedback units, and the machine tool itself. These equipment groups are described with reference to the Bendix system. Also, operating experience in existing installations is discussed.