1.3 Characteristics of modern CNC machine tools
Controllable feed and rotation axis
Work part machining on CNC machine tools requires controllable and adjustable infeed axes which are run
by the servo motors independent of each other. The hand wheels typical of conventional machine tools are
consequently redundant on a modern machine tool.
CNC lathes (see figure 3) have at least 2 controllable or adjustable feed axes marked as X and Z.