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Technical Briefs

Stability Predictions for End Milling Operations With a Nonlinear Cutting Force Model

[+] Author and Article Information
Alex Elías-Zúñiga, Jovanny Pacheco-Bolívar, Francisco Araya, Alejandro Martínez-López, Oscar Martínez-Romero

Department of Mechanical Engineering, Tecnológico de Monterrey, Monterrey, NL, Mexico 64849

Ciro A. Rodríguez

Center for Innovation in Design and Technology, Tecnológico de Monterrey, Monterrey, NL, Mexico 64849

J. Manuf. Sci. Eng 131(6), 064504 (Nov 13, 2009) (6 pages) doi:10.1115/1.4000450 History: Received September 29, 2006; Revised March 28, 2009; Published November 13, 2009; Online November 13, 2009

The aim of this paper is to obtain the stability lobes for milling operations with a nonlinear cutting force model. The work is focused on the generation of stability lobes based on a formulation with Chebyshev polynomials and the semidiscretization method, considering a nonlinear cutting force model. Comparisons were conducted between experimental data at 5% radial immersion with aluminum workpiece and predictions based on Chebyshev and semidiscretization. In all cases, the use of nonlinear cutting force model provides better prediction of process stability conditions.

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Copyright © 2009 by American Society of Mechanical Engineers
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Figures

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Figure 1

Theoretical versus measured cutting forces for one teeth cut at b=2 mm, Ω=900 rpm with a two flute 19.05 mm end mill

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Figure 2

Down-milling experimental results (5% radial immersion for a tool diameter 19.05 mm) versus Chebyshev and semidiscretization theoretical predictions

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Figure 3

Down-milling experimental results (5% radial immersion for a tool diameter of 12.7 mm) versus Chebyshev and the semidiscretization theoretical predictions

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