Helical milling tools of nonuniform helix angles are widely used in manufacturing industry. While the milling tools with these special cutting edges are already available in the market, their cutting dynamics has not been fully explored. Also, there have been several attempts to introduce complex harmonically varied helix tools, but the manufacturing of harmonic edges is extremely difficult, and their effect on cutting dynamics is not clear either. In this study, a general mechanical model is introduced to predict the linear stability of these special cutters with optional continuous variation of the helix angle. It is shown that these milling tools cause distribution in regeneration. The corresponding time-periodic distributed delay differential equations are investigated by semi-discretization. This work points out how the nonuniform and harmonically varied helix cutters behave in case of high and low cutting speed applications.
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e-mail: dombo@mm.bme.hu
e-mail: stepan@mm.bme.hu
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October 2012
Research Papers
The Effect of Helix Angle Variation on Milling Stability
Zoltan Dombovari,
Zoltan Dombovari
Department of Applied Mechanics,
e-mail: dombo@mm.bme.hu
Budapest University of Technology and Economics
, Budapest H-1521, Hungary
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Gabor Stepan
Gabor Stepan
Department of Applied Mechanics,
e-mail: stepan@mm.bme.hu
Budapest University of Technology and Economics
, Budapest H-1521, Hungary
Search for other works by this author on:
Zoltan Dombovari
Department of Applied Mechanics,
Budapest University of Technology and Economics
, Budapest H-1521, Hungary
e-mail: dombo@mm.bme.hu
Gabor Stepan
Department of Applied Mechanics,
Budapest University of Technology and Economics
, Budapest H-1521, Hungary
e-mail: stepan@mm.bme.hu
J. Manuf. Sci. Eng. Oct 2012, 134(5): 051015 (6 pages)
Published Online: September 28, 2012
Article history
Received:
February 24, 2012
Revised:
August 9, 2012
Published:
September 25, 2012
Online:
September 28, 2012
Citation
Dombovari, Z., and Stepan, G. (September 28, 2012). "The Effect of Helix Angle Variation on Milling Stability." ASME. J. Manuf. Sci. Eng. October 2012; 134(5): 051015. https://doi.org/10.1115/1.4007466
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