CIRP Encyclopedia of Production Engineering

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


  • Vikki Franke
Reference work entry


There are several definitions for burrs, but they all describe the same phenomenon. Burrs are undesired but mainly unavoidable. A burr is a material accumulation, which is created on the surface during the manufacturing of a workpiece. It extends over the intended and actual workpiece surface and has a slightly higher volume in comparison with the workpiece (Beier 1999). Burrs are uncut material remaining on the workpiece after being machined.

Burrs occur at the workpiece surface in cutting as well as in shearing operations at the workpiece edges. Further, laser machining can lead to burrs as well. This essay focuses on burrs of machining and shearing processes.

Burrs are of great industrial relevance as they interfere with the workpiece performance and functionality. Ideally, workpieces would be free of burrs, but, as this is often not the case, burrs can only be reduced either by changing the machining parameters, tool path, or tool. Alternatively, the burrs will have to...

This is a preview of subscription content, log in to check access.


  1. Aurich JC, Dornfeld D, Arrazola PJ, Franke V, Leitz L, Min S (2009) Burrs: analysis, control and removal. CIRP Ann 58(2):519–542CrossRefGoogle Scholar
  2. Beier HM (1999) Handbuch Entgrattechnik: Wegweiser zur Gratminimierung und Gratbeseitigung für Konstruktion und Fertigung (Handbook deburring: a burr-minimization and burr-removal guideline for design and manufacturing). Hanser Verlag, MünchenGoogle Scholar
  3. Gillespie LK (1999) Deburring and edge finishing handbook. SME, DearbornGoogle Scholar
  4. Gillespie LK, Blotter PT (1976) The formation and properties of machining burrs. Trans ASME J Eng Ind 98:66–74CrossRefGoogle Scholar
  5. Hashimura M, Hassamontr J, Dornfeld DA (1999) Effect of IN-plane exit angle and rake angles on burr height and thickness in face milling operation. J Manuf Sci Eng 121(1):13–19CrossRefGoogle Scholar
  6. International Standard ISO 13715 (2000) Technical drawings: edges of undefined shape: vocabulary and indications. Beuth Verlag, BerlinGoogle Scholar
  7. Leopold J, Schmidt G, Hoyer K, Freitag A (2005) Modelling and simulation of burr formation: state-of-the-art and future trends. In: Proceedings of the 8th international workshop on modeling of machining operations, Zwickau: Verlag Wissenschaftliche Scripten (Berichte aus dem IWU) pp 73–83Google Scholar
  8. Pekelharing AJ (1964) Why and how does the chip curl and break. CIRP Ann 12(3):144–147Google Scholar
  9. Schäfer F (1975) Entgraten: Theorie, Verfahren, Anlagen [Deburring: theory, processes, systems]. Krausskopf Verlag, MainzGoogle Scholar
  10. Thilow A, Berger K, Prüller H, Maier R, Pryzklenk K, Schäfer F, Pießlinger-Schweiger S (2008) Entgrattechnik: Entwicklungsstand und Problemlösung [Deburring technology: state of the art and solutions]. Expert Verlag, RenningenGoogle Scholar

Copyright information

© CIRP 2014

Authors and Affiliations

  1. 1.MünsingenGermany