CIRP Encyclopedia of Production Engineering

2014 Edition
| Editors: The International Academy for Production Engineering, Luc Laperrière, Gunther Reinhart

Computer Numerical Control

Reference work entry
DOI: https://doi.org/10.1007/978-3-642-20617-7_6524

Synonyms

Definition

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

Introduction

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)....

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References

  1. Altintas Y (2000) Manufacturing automation. Cambridge University Press, Cambridge, UKGoogle Scholar
  2. Altintas Y, Verl A, Brecher C, Uriarte L, Pritschow G (2011) Machine tool feed drives. Ann CIRP 60(2):779–796CrossRefGoogle Scholar
  3. Koren Y, Lo CC (1992) Advanced controllers for feed drives. Ann CIRP 41(2):689–698CrossRefGoogle Scholar
  4. Pritschow G (1998) A comparison of linear and conventional electromechanical drives. Ann CIRP 47(2):541–547CrossRefGoogle Scholar
  5. Pritschow G, Altintas Y, Jovane F, Koren Y, Mitsuishi M, Takata S, Van Brussel H, Weck M, Yamazaki K (2001) Open controller architecture: past, present and future. Ann CIRP 50(2):446–463CrossRefGoogle Scholar

Copyright information

© CIRP 2014

Authors and Affiliations

  1. 1.Mechanical EngineeringUniversity of British ColumbiaVancouverCanada