CIRP Encyclopedia of Production Engineering

2019 Edition
| Editors: Sami Chatti, Luc Laperrière, Gunther Reinhart, Tullio Tolio

Fine Finishing of Holes

  • Christoph GeyEmail author
Reference work entry



Fine finishing of holes or reaming process belongs to the high-precision machining processes and is aimed to fabricate boreholes of high quality to serve engineering fits. The reaming process especially improves the surface roughness, diameter, and form tolerance of a borehole, whereas the hole location will not necessarily be effected. In preparation of the reaming process, the holes have to be predrilled or core drilled. The process can be divided into round and profile reaming.

Theory and Application


Fine finishing of holes was introduced to ensure fits to mating of two mechanical components as either clearance, interference, or transition fit (ISO 286-1, ISO 286-2, ISO-R286 and ANSI B4.2-1978). Besides the multi-flute fine finishing tools were known for a long time, the guiding principles for single-blade reamers were inspired by the concept of deep hole drilling application with auto-guiding...

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  1. Koppka F (2009) A contribution to the maximization of productivity and workpiece quality of the reaming process by analyzing its static and dynamic behaviour: an analysis with focus on automotive powertrain production Dissertation Aachen: Shaker VerlagGoogle Scholar
  2. Kress D (1975) Reiben mit hohen schnittgeschwindigkeiten: untersuchung der möglichkeit beim reiben die schnittgeschwindigkeit an der erheblich höheren schnittgeschwindigkeiten anderer spanender verfahren anzupasse [Reaming with high cutting speed: investigations on adapting the cutting velocity to reasonable higher speeds of other cutting processes]. Vogel, Würzburg, (in German)sGoogle Scholar

Copyright information

© CIRP 2019

Authors and Affiliations

  1. 1.Kennametal Shared Services GmbHFürthGermany

Section editors and affiliations

  • Garret O'Donnell
    • 1
  1. 1.Trinity College DublinDublinIreland