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Influence of twist drill geometry on chip split with selfvibratory drilling head

Published online by Cambridge University Press:  23 April 2012

Olcay Önder*
Affiliation:
G-SCOP, 46 Av. Felix Viallet, 38041 Grenoble Cedex 1, France
Henri Paris
Affiliation:
G-SCOP, 46 Av. Felix Viallet, 38041 Grenoble Cedex 1, France
Joël Rech
Affiliation:
LTDS, 58 Av. Jean Parot, 42000 St Étienne, France
*
a Corresponding author: [email protected]
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Abstract

In industrial area, drilling is one of the most commonly used machining operations. Today, conventional drilling methods have found their limits in deep hole drilling. To be able to push these limits, we have developed a new technology: vibratory drilling. The aim of this study is to determine the influence of the twist drill geometry on performance of the self vibratory drilling head. For that reason, it is necessary to identify the geometrical properties which have the strongest influence on axial vibrations of twist drill and on chip fragmentation. Moreover, we have also validated the experimental results by a simulator which can predict the behaviour of the self vibratory drilling head by taking into account geometrical defects of the tool.

Type
Research Article
Copyright
© AFM, EDP Sciences 2012

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