University of Illinois Urbana-Champaign

Modeling and Analysis of Micro -End Milling Dynamics

Jun, Martin

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https://hdl.handle.net/2142/83825

Description

Title
Modeling and Analysis of Micro -End Milling Dynamics
Author(s)
Jun, Martin
Issue Date
2005
Doctoral Committee Chair(s)
  • Shiv Kapoor
  • DeVor, Richard E.
Department of Study
Mechanical Engineering
Discipline
Mechanical Engineering
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Engineering, Mechanical
Language
eng
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.
Graduation Semester
2005
Type of Resource
text
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http://hdl.handle.net/2142/83825

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