Microend milling offers the ability to machine microparts of complex geometry relatively quickly when compared with photolithographic techniques. The key to good surface quality is the minimization of tool chatter. This requires an understanding of the milling tool and the milling structure system dynamics. However, impact hammer testing cannot be applied directly to the prediction of tool tip dynamics because microend mills are fragile, with tip diameters as small as . This paper investigates the application of the receptance coupling technique to mathematically couple the spindle/micromachine and arbitrary microtools with different geometries. The frequency response functions (FRFs) of the spindle/micromachine tool are measured experimentally through impact hammer testing, utilizing laser displacement and capacitance sensors. The dynamics of an arbitrary tool substructure are determined through modal finite element analyses. Joint rotational dynamics are indirectly determined through experimentally measuring the FRFs of gauge tools. From the FRFs, chatter conditions are predicted and verified through micromilling experiments.
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e-mail: simon.park@ucalgary.ca
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February 2008
Research Papers
Substructure Coupling of Microend Mills to Aid in the Suppression of Chatter
Brock A. Mascardelli,
Brock A. Mascardelli
Micro Engineering Dynamics Automation Laboratory (MEDAL), Department of Mechanical and Manufacturing Engineering,
University of Calgary
, 2500 University Drive North West, Calgary, AB, T2 N 1N4, Canada
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Simon S. Park,
Simon S. Park
Micro Engineering Dynamics Automation Laboratory (MEDAL), Department of Mechanical and Manufacturing Engineering,
e-mail: simon.park@ucalgary.ca
University of Calgary
, 2500 University Drive North West, Calgary, AB, T2 N 1N4, Canada
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Theodor Freiheit
Theodor Freiheit
Micro Engineering Dynamics Automation Laboratory (MEDAL), Department of Mechanical and Manufacturing Engineering,
University of Calgary
, 2500 University Drive North West, Calgary, AB, T2 N 1N4, Canada
Search for other works by this author on:
Brock A. Mascardelli
Micro Engineering Dynamics Automation Laboratory (MEDAL), Department of Mechanical and Manufacturing Engineering,
University of Calgary
, 2500 University Drive North West, Calgary, AB, T2 N 1N4, Canada
Simon S. Park
Micro Engineering Dynamics Automation Laboratory (MEDAL), Department of Mechanical and Manufacturing Engineering,
University of Calgary
, 2500 University Drive North West, Calgary, AB, T2 N 1N4, Canadae-mail: simon.park@ucalgary.ca
Theodor Freiheit
Micro Engineering Dynamics Automation Laboratory (MEDAL), Department of Mechanical and Manufacturing Engineering,
University of Calgary
, 2500 University Drive North West, Calgary, AB, T2 N 1N4, CanadaJ. Manuf. Sci. Eng. Feb 2008, 130(1): 011010 (12 pages)
Published Online: February 6, 2008
Article history
Received:
May 30, 2007
Revised:
October 2, 2007
Published:
February 6, 2008
Citation
Mascardelli, B. A., Park, S. S., and Freiheit, T. (February 6, 2008). "Substructure Coupling of Microend Mills to Aid in the Suppression of Chatter." ASME. J. Manuf. Sci. Eng. February 2008; 130(1): 011010. https://doi.org/10.1115/1.2816104
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