Tristan Régnier, PhD student atLaBoMaP, will defend his thesis on Friday, December 14, 2018, on "Experimental analysis and modeling of burr formation in AlSi7Mg0.3+0.5Cu alloy – Application in orthogonal cutting and milling."
JURY MEMBERS
Rapporteurs
- Pedro-José ARRAZOLA ARRIOLA - Mondragon University, Spain
- Joël RECH - ENI Saint-Etienne
Examiners
- Gilles DESSEIN - ENI in Tarbes
- Guillaume FROMENTIN - Cluny Arts et Métiers Campus
- José OUTEIRO - Cluny Arts et Métiers Campus
- Alain D'ACUNTO - Arts et Métiers Campus Arts et Métiers Metz
Guests
- Arnaud CROLET - Linamar-Montupet
- Bertrand MARCON - Cluny Arts et Métiers Campus
SUMMARY
"In the context of production line optimization, controlling the quality of parts and machine capabilities is essential. Several studies have focused on the formation of burrs during machining, but the mechanisms are still poorly understood, although a strong link with cutting forces has been established by various authors. Controlling cutting forces therefore has two benefits: it optimizes production lines and provides input data for predicting burr size. This study therefore aims to improve our understanding of the mechanisms involved in the formation of burrs generated by a tool exiting the material, and to predict cutting forces in high-speed milling of AlSi7Mg0.3+0.5Cu aluminum alloy. Various burr formation mechanisms are studied in cross-sectional analysis. A new in situ measurement method makes it possible to identify the influence of operating conditions on the statistical evolution of geometric criteria characterizing the burrs generated heterogeneously in the case of the alloy studied, whose behavior is highly dependent on its local stress state and microstructure. An analysis of the displacement and deformation fields using coupled image correlation and a finite element simulation model enable the burr formation mechanisms to be identified in greater detail. Surface finishing is studied to model the cutting forces and then compare the forces produced when the teeth exit with the characteristics of the burrs obtained. Finally, a strategy for minimizing burr height during high-feed milling is studied.
PRACTICAL INFORMATION
Campus Arts et Métiers Cluny- rue Porte de Paris - 71250 Cluny
Defense Friday, December 14, 2018 - 9 a.m. - Lecture Hall 2
