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Simulation et quantification tridimensionnelledes défauts générés par un processus de fabrication

Abstract : The manufacturing dimensioning intends to determine the intermediary geometrical and dimensional state of the part during its manufacturing process. This manufacturing dimension also permits to respect the functional requirements given by the design drawing on one hand, and the manufacturing constraints on the other (the machine precision, minimal machining extra thickness...). The TMT method (Three-dimensional Manufacturing Tolerancing) is a three-dimensional approach of manufacturing dimensioning with the concept of small displacements torsor. This approach permits to treat the specification to definition drawing defined by the ISO norms. The purpose is to analyse the impact of the manufacturing deviations on each specification to be considered. This method uses a precise definition of the reference systems in each phase in correlation with the machine adjustment process. The nominal part model is directly fixtured on the datum system of the studied requirement so as to minimize the number of the unknowns. This approach puts into evidence the obtained calculation simplifications, which permits a simple writing of the dimensions chains resultant to verify each requirement.
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Submitted on : Thursday, March 25, 2010 - 3:02:39 PM
Last modification on : Monday, February 15, 2021 - 10:49:59 AM
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  • HAL Id : tel-00466985, version 1


Badreddine Ayadi. Simulation et quantification tridimensionnelledes défauts générés par un processus de fabrication. Mécanique []. École normale supérieure de Cachan - ENS Cachan, 2009. Français. ⟨tel-00466985⟩



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