Although process damping has a strong effect on cutting dynamics and stability, it has been mostly ignored in chatter analysis as there is no practical model for estimation of the damping coefficient and very limited data are available. This is mainly because of the fact that complicated test setups were used in order to measure the damping force in the past. In this study, a practical identification and modeling method for the process damping is presented. In this approach, the process damping is identified directly from the chatter tests using experimental and analytical stability limits. Once the process damping coefficient is identified, it is related to the instantaneous indentation volume by a coefficient which can be used for different cutting conditions and tool geometries. In determining the indentation coefficient, chatter test results, energy, and tool indentation geometry analyses are used. The determined coefficients are then used for the stability limit and process damping prediction in different cases, and verified using time-domain simulations and experimental results. The presented method can be used to determine chatter-free cutting depths under the influence of process damping for increased productivity.
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October 2009
Research Papers
A New Method for Identification and Modeling of Process Damping in Machining
E. Budak,
E. Budak
Faculty of Engineering and Natural Sciences,
e-mail: ebudak@sabanciuniv.edu
Sabanci University
, Istanbul 34956, Turkey
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L. T. Tunc
L. T. Tunc
Faculty of Engineering and Natural Sciences,
Sabanci University
, Istanbul 34956, Turkey
Search for other works by this author on:
E. Budak
Faculty of Engineering and Natural Sciences,
Sabanci University
, Istanbul 34956, Turkeye-mail: ebudak@sabanciuniv.edu
L. T. Tunc
Faculty of Engineering and Natural Sciences,
Sabanci University
, Istanbul 34956, TurkeyJ. Manuf. Sci. Eng. Oct 2009, 131(5): 051019 (10 pages)
Published Online: October 1, 2009
Article history
Received:
December 4, 2008
Revised:
July 14, 2009
Published:
October 1, 2009
Citation
Budak, E., and Tunc, L. T. (October 1, 2009). "A New Method for Identification and Modeling of Process Damping in Machining." ASME. J. Manuf. Sci. Eng. October 2009; 131(5): 051019. https://doi.org/10.1115/1.4000170
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