Influence of torsional motion on vibratory drilling

Alexander M. Gouskov, Sergey A. Voronov, Alexey S. Kvashnin, Eric A. Butcher, S. C. Sinha

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

The nonlinear dynamics of a tool commonly employed in deep hole drilling is analyzed. The tool is modeled as a two-degree of freedom system that vibrates in axial directions and twists caused by the cutting process. The mechanical model of cutting forces is a nonlinear function of cutting tool displacement including state variables with time delay. The equations of new surface formation are separated as a specific set. These equations naturally include the regeneration effect of oscillations under cutting and it is possible to analyze continuous and intermittent cutting involving either stationary or non-stationary processes. The vibratory drilling tool feed consists of a constant as well as a periodic component. The influence of tool axial and torsional dynamics on chip formation is considered. The Poincare maps of state variables for various sets of operating conditions are presented. The obtained results allow prediction of conditions for stable continuous cutting and unstable regions. The conditions of tool axial vibrations synchronized at frequency of external excitation are analyzed. The time domain simulation allows determination of the chip shape most suitable for certain workpiece material and tool geometry. It is also shown that disregarding tool torsional vibrations may significantly change the chip formation process. The suggested model can be applied at the stage of the manufacturing process design.

Original languageEnglish (US)
Title of host publicationProc. of the ASME Int. Des. Eng. Tech. Conf. and Comput. and Information in Engineering Conferences - DETC2005
Subtitle of host publication5th International Conference on Multibody Systems, Nonlinear Dynamics, and Control
Pages987-997
Number of pages11
StatePublished - Dec 1 2005
Externally publishedYes
EventDETC2005: ASME International Design Engineering Technical Conferences and Computers and Information in Engineering Conference - Long Beach, CA, United States
Duration: Sep 24 2005Sep 28 2005

Publication series

NameProceedings of the ASME International Design Engineering Technical Conferences and Computers and Information in Engineering Conference - DETC2005
Volume6 B

Other

OtherDETC2005: ASME International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
CountryUnited States
CityLong Beach, CA
Period9/24/059/28/05

Keywords

  • Chip formation
  • Simulation
  • Stability
  • Vibratory drilling

ASJC Scopus subject areas

  • Engineering(all)

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  • Cite this

    Gouskov, A. M., Voronov, S. A., Kvashnin, A. S., Butcher, E. A., & Sinha, S. C. (2005). Influence of torsional motion on vibratory drilling. In Proc. of the ASME Int. Des. Eng. Tech. Conf. and Comput. and Information in Engineering Conferences - DETC2005: 5th International Conference on Multibody Systems, Nonlinear Dynamics, and Control (pp. 987-997). (Proceedings of the ASME International Design Engineering Technical Conferences and Computers and Information in Engineering Conference - DETC2005; Vol. 6 B).