Drilling of carbon composites using a one shot drill bit. Part 2 Empirical modeling of maximum thrust force

Authors

Marta A. FernandesFollow
Christopher David Cook, University of WollongongFollow

RIS ID

21294

Publication Details

Fernandes, M. A. & Cook, C. David. (2006). Drilling of carbon composites using a one shot drill bit. Part 2 Empirical modeling of maximum thrust force. International Journal of Machine Tools and Manufacture, 46 (1), 76-79.

Abstract

In order to extend tool life and improve quality of hole drilling in carboncomposite materials, a better understanding of ‘oneshot’ hole drilling is required. This paper describes the development of an empirical model of the maximum thrust force and torque produced during drilling of carbon fiber with a ‘oneshot’ drillbit. Shaw's simplified equations are adapted in order to accommodate for tool wear and used to predict maximum thrust force and torque in the drilling of carboncomposite with a ‘oneshot’ drillbit. The mathematical model is dependent on the number of holes drilled previously, the geometry of the drillbit, the feed used and the thickness of the workpiece. The model presented here is verified by extensive experimental data.