ISSN 1842-3183

 
 
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□ Volume No. 3, 2008

 

 

 

 

 

 

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New edition 2009

 

Proceedings of the 17th International Conference on Manufacturing Systems – ICMaS

Published by Editura Academiei Române, ISSN 1842-3183

Volume No. 3, 2008

University POLITEHNICA of Bucharest, Machine and Manufacturing Systems Department

Bucharest, Romania, 13-14 November, 2008

 

pp. 247-252

 

EXPERIMENTAL STUDY OF THIN PART VIBRATION MODES IN MACHINING

 

Toufic WEHBE, Gilles DESSEIN, Lionel ARNAUD

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 Abstract:  The machining of thin walls generally generates milling chatter, that damage surface roughness and manufacturing tools. Stability lobes which include natural frequencies are successful in case of tool chatter. When milling thin webs models are less adequate, because the interaction with the tool disrupts the behaviour of the work piece. The modal approach generally used for stability charts may be not adequate enough because of neglecting the tool and the work piece contact. This paper presents the experimental phase of a work aiming at analyse vibration modes of a thin web during machining. A finite element calculation shows the influence of a contact on natural frequencies of the part. For a better investigation, field displacements of the work piece are analysed. This work eventually aims at better knowledge of the contact between the tool and the part to improve the hardiness of models.

 

Key words: milling, chatter, flexible part, modal shape, displacement field.

 

Authors:

Toufic WEHBE, PhD student, Laboratoire Génie de Production, Ecole Nationale d’Ingénieurs de Tarbes, France,

E-mail: toufic.wehbe@enit.fr

Gilles DESSEIN, Assistant professor, Laboratoire Génie de Production, Ecole Nationale d’Ingénieurs de Tarbes, France,

E-mail: gilles.dessein@enit.fr

Lionel ARNAUD, Assistant professor, Laboratoire Génie de Production, Ecole Nationale d’Ingénieurs de Tarbes, FRANCE,

E-mail: Lionel.Arnaud@enit.fr

  

Electronic mail: orgcom@icmas.eu   /   General Information:  http://www.edition2009.icmas.eu/