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Title:Modeling and Analysis of Micro -End Milling Dynamics
Author(s):Jun, Martin
Doctoral Committee Chair(s):Shiv Kapoor; DeVor, Richard E.
Department / Program:Mechanical Engineering
Discipline:Mechanical Engineering
Degree Granting Institution:University of Illinois at Urbana-Champaign
Subject(s):Engineering, Mechanical
Abstract:Experimental and analytical methods have been developed to estimate the values of the faults in micro-end milling. Experimental validation of the model has been performed, and the model is shown to predict cutting forces and micro-end mill deflections within an average of 15%. Effects of process faults on micro-end mill vibrations have been studied varying feedrates for which the cutting mechanisms vary from ploughing-dominated to shearing-dominated. The stability characteristics based on the regenerative effect that are unique in the micro-end mill have also been studied. Vibration contour maps have been generated to investigate the dynamic behavior of micro-end mills under different cutting mechanisms. The results show that the stability lobes from the second mode, which are generally neglected in macro-scale end milling, affect the micro-end mill stability significantly. The contour maps show that the minimum chip thickness effect has significant effect on the micro-end mill dynamic behavior at low feedrates where the process is ploughing-dominated. The model has also been applied and validated for a high-speed end milling process.
Issue Date:2005
Description:193 p.
Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2005.
Other Identifier(s):(MiAaPQ)AAI3182292
Date Available in IDEALS:2015-09-25
Date Deposited:2005

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