Computer Numerical Control
Computer numerical control (CNC) means the digital control of machine tool units that consist of series of integrated mechanical actuators, electrical or electrohydraulic servomotors, power amplifiers, position and velocity sensors, and a dedicated computer running under a real-time operating system.
Theory and Application
CNC systems control the moving units of a machine tool. The moving units are classified under feed and spindle drives, and auxiliary components such as tool and pallet changers, coolant pumps, and chip conveyors. Feed and spindle drives require smooth position, speed, and acceleration control which are carried out by the trajectory generation and digital control algorithms executed in fixed time intervals by dedicated computers. The auxiliary units are activated by programmable logical controllers (PLCs) that operate on the basis of ON/OFF logic (Altintas 2000).
- Altintas Y (2012) Manufacturing automation. 2nd Edition, Cambridge University Press, CambridgeGoogle Scholar