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Méthodologie de maîtrise des variations géométriques des produits en conception, fabrication et contrôle dans le contexte de l'usine numérique

Abstract : Functional drawing describes geometrical requirements to respect for a part in order to ensure the good functioning of a mechanism. Process engineer determines a plan process for the realization of the part in accordance with the functional requirements. He must determine manufacturing requirements for each phase, which allow to respect functional requirements. The method introduced in this PhD thesis aims at automatically generating these manufacturing requirements for a given plan process. The transfer method is based on the analyse of toleranced surfaces and datum surfaces mobilities. Mobilities are modeled by vectorial representations, expressed in a local frame for each element. Four operators are put forward to manipulate these mobilities. The method is ascendant. A manufacturing requirement locates or orientes the last manufactured surface regarding the datum target frame of the phase. The analysis line method gives the impact of its tolerance on the functional requirement. The transfert follows through until all surfaces are active in the same phase. A transfer software has been developped with Excel for a part and a plan process described in CATIA.
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Mickael Caux. Méthodologie de maîtrise des variations géométriques des produits en conception, fabrication et contrôle dans le contexte de l'usine numérique. Autre. École normale supérieure de Cachan - ENS Cachan, 2012. Français. ⟨NNT : 2012DENS0030⟩. ⟨tel-00777192⟩

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