How Do CNC Machines Work?
Put simply, a CNC machine is a computer-controlled device that manipulates the sort of manufacturing tools that you would find in many factories and other industrial settings. In the past, numerical control (NC) machines used systems like punched tape to send instructions to motors and servos which, in turn, controlled machines.
A typical example might have been the 1950s punched tape system which gave the instructions for where a drill bit would be automatically applied to a workpiece.