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Modélisation des tolérances géométriques des mécanismes pour leur intégration en conception assistée par ordinateur

Abstract : This study proposes a new approach to analysis and synthesis of geometrical tolerance mechanisms. We present the approach through tolerancing equations and the static approach which are based on the theory of mechanisms. These two approaches make it possible to give a qualitative determination of the relative positional tolerances between any functional features of the same component. We present tolerance analysis and synthesis methods by using both clearance and deviation domains. In the case of a single loop mechanism, the analysis method checks the assembly requirements, thanks to geometrical operations between clearance and deviation domains. In the case of given functional requirements, for the most part, the synthesis method is able to give optimal geometrical tolerances from a qualitative and quantitative point of view. In the case of a mechanism with a parallel structure, we introduce the notion of residual and uncertainty clearance domains. With these concepts, the synthesis methods is able to define the necessary and sufficient assembly requirements. It also generalises this study to check other functional requirements like accuracy. Perspectives of developments consists in generalising the study on mechanisms of any structure. These methods will be integrated into CAD systems..
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Submitted on : Wednesday, September 23, 2009 - 11:29:47 AM
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  • HAL Id : tel-00419316, version 1

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Bassam Kataya. Modélisation des tolérances géométriques des mécanismes pour leur intégration en conception assistée par ordinateur. Mécanique [physics.med-ph]. Université de Savoie, 2002. Français. ⟨tel-00419316⟩

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