CNC turning is the most common machining method in machining. The
main working principle is: through the high-speed rotation of the
workpiece on the machine tool, the tool shifts in the axial and
vertical axes, so that the blade cuts off some materials of the
interfering parts. NC turning is a way to distinguish manual
turning. Manual turning depends on manual control of machine speed
and feed. NC turning is a way to realize semi manual machining by
manually setting machine parameters.