CIRP Encyclopedia of Production Engineering

Living Edition
| Editors: Sami Chatti (Editor-in-Chief), Luc Laperrière (Editor-in-Chief), Gunther Reinhart (Editor-in-Chief), Tullio Tolio (Editor-in-Chief), The International Academy for Production

Computer Numerical Control

Living reference work entry
DOI: https://doi.org/10.1007/978-3-642-35950-7_6524-4

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 (2012) Manufacturing automation. 2nd Edition, Cambridge University Press, CambridgeGoogle 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 2018

Authors and Affiliations

  1. 1.Faculty of Applied Science, Department Mechanical Engineering/MAL- Manufacturing Automation LaboratoryUniversity of British ColumbiaVancouverCanada

Section editors and affiliations

  • Hans-Christian Möhring
    • 1
  1. 1.Institut für WerkzeugmaschinenUniversität StuttgartStuttgartGermany