Investigation of gyroscopic effect on the stability of high speed micromilling via bifurcation analysis

Mittal, RK and Singh, RK (2021) Investigation of gyroscopic effect on the stability of high speed micromilling via bifurcation analysis. In: Journal of Manufacturing and Materials Processing, 5 (4).

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Abstract

Catastrophic tool failure due to the low flexural stiffness of the micro-tool is a major concern for micromanufacturing industries. This issue can be addressed using high rotational speed, but the gyroscopic couple becomes prominent at high rotational speeds for micro-tools affecting the dynamic stability of the process. This study uses the multiple degrees of freedom (MDOF) model of the cutting tool to investigate the gyroscopic effect in machining. Hopf bifurcation theory is used to understand the long-term dynamic behavior of the system. A numerical scheme based on the linear multistep method is used to solve the time-periodic delay differential equations. The stability limits have been predicted as a function of the spindle speed. Higher tool deflections occur at higher spindle speeds. Stability lobe diagram shows the conservative limits at high rotational speeds for the MDOF model. The predicted stability limits show good agreement with the experimental limits, especially at high rotational speeds. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.

Item Type:	Journal Article
Publication:	Journal of Manufacturing and Materials Processing
Publisher:	MDPI
Additional Information:	The copyright for this article belongs to MDPI.
Department/Centre:	Division of Mechanical Sciences > Mechanical Engineering
Date Deposited:	05 Jan 2022 06:23
Last Modified:	05 Jan 2022 06:23
URI:	http://eprints.iisc.ac.in/id/eprint/70892

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