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Three-Dimensional Endmill Dynamics: Modal Development and Experimental Validation

[+] Author Affiliations
Bekir Bediz, Burak Ozdoganlar

Carnegie Mellon University, Pittsburgh, PA

Uttara Kumar, Tony L. Schmitz

University of Florida, Gainesville, FL

Paper No. MSEC2011-50040, pp. 111-118; 8 pages
doi:10.1115/MSEC2011-50040
From:
  • ASME 2011 International Manufacturing Science and Engineering Conference
  • ASME 2011 International Manufacturing Science and Engineering Conference, Volume 1
  • Corvallis, Oregon, USA, June 13–17, 2011
  • ISBN: 978-0-7918-4430-4
  • Copyright © 2011 by ASME

abstract

In this paper the three-dimensional dynamic behavior of macro-scale milling tools is modeled using the spectral-Tchebychev technique while considering the actual fluted cross-sectional geometry and pretwisted shape of the tools. The bending and torsional behavior of three different fluted endmills is compared to finite element predictions and experimental results obtained using impact testing with free-free boundary conditions. The percent difference between experiment and the spectral-Tchebychev method predictions is shown to be 3% or less for all three tools while considering the first six bending modes and first two torsional modes. For the same modes, the spectral-Tchebychev and finite element model predictions agreed to better than 1%.

Copyright © 2011 by ASME

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