Title

A study of computer-assisted analysis of effects of drill geometry and surface coating on forces and power in drilling

Document Type

Journal Article

Publisher

Elsevier

Faculty

Regional Professional Studies

School

Regional Professional Studies, Centre for Sustainable Regional Futures

RAS ID

5427

Comments

This article was originally published as: Audy, J. (2008). A study of computer-assisted analysis of effects of drill geometry and surface coating on forces and power in drilling. Journal of Materials Processing Technology, 204(1-3), 130-138. Original article available here

Abstract

The success of continuous improved drill performance in cutting applications has to date largely been based on significant advances through tool surface coatings and modifications of drill point geometry, i.e, optimisation of the rake angle distributions along the drill lips and the chisel edge. It has been recognised that due to the complexity of equations for the force and power predictions, computer assistance is needed. Consequently, this paper presents the results of a systematic - computer-assisted - study focused on determining, and describing, from a mathematical point of view, the relationship between the drill point geometrical features and the performance measures as assessed by the cutting forces and power in drilling. This is followed by a study of predicted influences of drilling variables on the generated thrust, torque and power, The results are presented for different types of modem commercial tool surface coatings and work-piece materials, It is suggested that this sort of information may be used, by both tool manufacturers and users, to assist in the optimisation, and selection, of the drill point geometrical features for 'best' performance.

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Link to publisher version (DOI)

10.1016/j.jmatprotec.2007.10.079