TY - GEN
T1 - Nonlinear flexural-torsional vibrations of a gundrilling tool
AU - Gouskov, Alexander M.
AU - Butcher, Eric A.
AU - Voronov, Sergey A.
AU - Sinha, Subhash C.
PY - 2005
Y1 - 2005
N2 - The nonlinear dynamics of a tool commonly employed in deep hole drilling is analyzed. The tool is modeled as a continuous beam that vibrates in transverse and axial directions caused by 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. Due to the constant component of feed, the distance between the supports of beam is regarded as a slowly varying function of time. The system includes three types of non-linearity, viz., discontinuity of cutting, nonlinear machining law, and the influence of transverse displacement of beam on axial deflection of cutting edges. Variation of machined chip thickness cause variation of axial trust force and it is an additional source of parametric excitation of system oscillations.
AB - The nonlinear dynamics of a tool commonly employed in deep hole drilling is analyzed. The tool is modeled as a continuous beam that vibrates in transverse and axial directions caused by 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. Due to the constant component of feed, the distance between the supports of beam is regarded as a slowly varying function of time. The system includes three types of non-linearity, viz., discontinuity of cutting, nonlinear machining law, and the influence of transverse displacement of beam on axial deflection of cutting edges. Variation of machined chip thickness cause variation of axial trust force and it is an additional source of parametric excitation of system oscillations.
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U2 - 10.1115/detc2005-85308
DO - 10.1115/detc2005-85308
M3 - Conference contribution
AN - SCOPUS:33244494658
SN - 0791847438
SN - 9780791847435
T3 - Proceedings of the ASME International Design Engineering Technical Conferences and Computers and Information in Engineering Conference - DETC2005
SP - 971
EP - 980
BT - Proc. of the ASME Int. Des. Eng. Tech. Conf. and Comput. and Information in Engineering Conferences - DETC2005
PB - American Society of Mechanical Engineers
T2 - DETC2005: ASME International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
Y2 - 24 September 2005 through 28 September 2005
ER -