The Parametric Resonance Instability in a Drilling Process

[+] Author and Article Information
Bo-Wun Huang1

Department of Mechanical Engineering, Cheng Shiu University, 840 Cheng Ching Road, Niaosung, Kaohsiung, Taiwanhuangbw@csu.edu.tw

Jao-Hwa Kuang

Department of Mechanical and Electromechanical Engineering, National Sun Yat-Sen University, Kaohsiung 80424, Taiwankuang@mail.nsysu.edu.tw


Corresponding author.

J. Appl. Mech 74(5), 958-964 (Jan 04, 2007) (7 pages) doi:10.1115/1.2722768 History: Received June 15, 2005; Revised January 04, 2007

This study investigates dynamic instability in a high-speed drilling process. A pretwisted beam is used to simulate the drill. The time-dependent nature of the thrust force and the drilling depth is considered in the equation of motion of the drill. A moving Winkler-type elastic foundation assumption is applied to the drill tip to approximate the time-varying boundary conditions in the drilling process. Galerkin’s method is used to formulate the characteristic equation in a discrete form. The variation of the instability regions of the drill system is solved and analyzed by employing the multiple-scales perturbation method. The numerical results indicate that the unstable regions suddenly enlarge and shift toward a lower frequency when the drill first contacts the work piece. The effects of the rotational speed, pretwisted angle, and thrust force of the drill on the variation of the dynamic instability in high-speed drilling are also studied and are found to be highly influential.

Copyright © 2007 by American Society of Mechanical Engineers
Your Session has timed out. Please sign back in to continue.



Grahic Jump Location
Figure 1

Schematic of drill considered in current drilling process

Grahic Jump Location
Figure 2

Variation of lowest natural frequency of drill in drilling process

Grahic Jump Location
Figure 3

Dynamic response of drill in drilling process

Grahic Jump Location
Figure 4

Variation in instability zone of drill during drilling process

Grahic Jump Location
Figure 5

Variation in the instability regions for different axial thrust load with different feed velocity

Grahic Jump Location
Figure 6

Variation in instability zone of drill with different pretwisted angles

Grahic Jump Location
Figure 7

Variation in instability zone of drill with different drilling speeds




Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In