Study of the mechanics of the micro-groove cutting process

Keith A. Bourne, Shiv G. Kapoor, Richard E. DeVor

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In an earlier paper, a high-speed micro-groove cutting process that makes use of a flexible single-point cutting tool was presented. In this paper, 3D finite element modeling of this cutting process is used to better understand process mechanics. The development of the model, including parameter estimation and validation, is described. Validation experiments show that on average the model predicts side burr height to within 2.8%, chip curl radius to within 4.1%, and chip thickness to within 25.4%. The model is used to examine chip formation, side burr formation, exit burr formation, and the potential for delamination of a workpiece consisting of a thin film on a substrate. Side burr formation is shown to primarily occur ahead of a tool and is caused by expansion of material compressed after starting to flow around a tool rather than becoming part of a chip. Exit burr formation is shown to occur when a thin membrane of material forms ahead of a tool and splits into two side segments and one bottom segment as the tool exits a workpiece. Lastly, examination of the stresses below a workpiece surface shows that film delamination can occur when the depth of a groove cut into a thin film is large relative to the film thickness.

Original languageEnglish (US)
Title of host publicationASME 2011 International Manufacturing Science and Engineering Conference, MSEC 2011
Pages339-348
Number of pages10
DOIs
StatePublished - Dec 5 2011
EventASME 2011 International Manufacturing Science and Engineering Conference, MSEC 2011 - Corvallis, OR, United States
Duration: Jun 13 2011Jun 17 2011

Publication series

NameASME 2011 International Manufacturing Science and Engineering Conference, MSEC 2011
Volume2

Other

OtherASME 2011 International Manufacturing Science and Engineering Conference, MSEC 2011
Country/TerritoryUnited States
CityCorvallis, OR
Period6/13/116/17/11

ASJC Scopus subject areas

  • Industrial and Manufacturing Engineering

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