Characterization of lubrication sensitivity on dynamic stability in high-speed micromilling of Ti–6Al–4V via a novel numerical scheme

Characterization of lubrication sensitivity on dynamic stability in high-speed micromilling of... •Three distinct operational regimes are found in high-speed micromilling of Ti–6Al–4V: lubrication sensitive, insensitive and the transition regimes.•A significant reduction in cutting forces is observed in the lubrication sensitive regime.•A 2-DOF stability model with the velocity-chip load dependent coefficients yields a transcendental equation with no closed-form solution.•Development of a novel numerical scheme based on Newton-Raphson method to determine the stability limits.•A significant enhancement in the stability limits in lubricated machining beyond the transition regime. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png International Journal of Mechanical Sciences Elsevier

Characterization of lubrication sensitivity on dynamic stability in high-speed micromilling of Ti–6Al–4V via a novel numerical scheme

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Publisher
Elsevier
Copyright
Copyright © 2018 Elsevier Ltd
ISSN
0020-7403
eISSN
1879-2162
D.O.I.
10.1016/j.ijmecsci.2018.04.038
Publisher site
See Article on Publisher Site

Abstract

•Three distinct operational regimes are found in high-speed micromilling of Ti–6Al–4V: lubrication sensitive, insensitive and the transition regimes.•A significant reduction in cutting forces is observed in the lubrication sensitive regime.•A 2-DOF stability model with the velocity-chip load dependent coefficients yields a transcendental equation with no closed-form solution.•Development of a novel numerical scheme based on Newton-Raphson method to determine the stability limits.•A significant enhancement in the stability limits in lubricated machining beyond the transition regime.

Journal

International Journal of Mechanical SciencesElsevier

Published: Jul 1, 2018

References

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