Journal
TRIBOLOGY INTERNATIONAL
Volume 42, Issue 5, Pages 738-744Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.triboint.2008.10.007
Keywords
Friction; Numerical modelling; Cutting
Categories
Funding
- ASCOMETAL CREAS Company
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The characterization of friction coefficients at the tool-chip-workpiece interface remains an issue. This paper aims to identify a friction model able to describe the friction coefficient at this interface during the dry cutting of an AISI1045 with TiN coated carbide tools. A new tribometer has been designed in order to reach relevant values of pressures and sliding velocities. This set-up is based on a modified pin-on-ring system. Additionally a numerical model simulating the frictional test has been associated in order to quantify average friction coefficients around the spherical pin, from the standard macroscopic data provided by the experimental system. A range of cutting speeds has been investigated. It has been shown that the friction coefficient is very much dependant on the sliding velocity. A new friction model has been identified based on the average local sliding velocity. (C) 2008 Elsevier Ltd. All rights reserved.
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