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2009-05-29 - Colloque/Article dans les actes avec comité de lecture - Anglais - 7 page(s)

Ducobu François , Filippi Enrico , Rivière Edouard , "Chip formation in micro-milling" in National Congress of Theoretical and Applied Mechanics, 8, 333-339, VUB, Brussels, Belgique, 2009

  • Codes CREF : Mécanique appliquée générale (DI2100), Façonnage des métaux (DI2733), Usinage (DI2131), Mécanique appliquée spéciale (DI2200)
  • Unités de recherche UMONS : Génie Mécanique (F707)
  • Instituts UMONS : Institut de Recherche en Science et Ingénierie des Matériaux (Matériaux)
  • Centres UMONS : Ingénierie des matériaux (CRIM)
Texte intégral :

Abstract(s) :

(Anglais) In the current context of miniaturisation, micro-machining processes are in full expansion. One of them is micro-milling, able to produce parts with features ranging from several mm to several µm. Despite the down-sizing of the macro-milling process, micro-cutting is not a simple scaling-down of macro-cutting. The new way of forming chips involves the so-called ‘minimum chip thickness’ phenomenon, below which no chip is formed. Estimating the minimum chip thickness value is one of the main challenges in micro-milling. A review of the current state-of-the-art in chip formation and minimum chip thickness in micro-milling is reported in this paper from an experimental and numerical point of view. In order to model the chip formation process, 2D numerical simulations are performed using the finite element method and a commercial software programme, ABAQUS/Explicit v6.7. The Lagrangian formulation has been adopted and a chip separation criterion is used to make chip formation possible. Results of the finite element simulations are presented and compared to results found in the literature.