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1 LCFC - Laboratoire de Conception Fabrication Commande 2 L2MA - Laboratoire de Métrologie et de Mathématiques Appliquées

Abstract : To develop Net Shape parts by forging, process planing must take design, production, heat treatment and control difficulties into account the earliest it-s possible. In this perspective, we propose to present an aspect of our work, made in collaboration with an industry, which deals with the dimensional control of the functionality of forgedstraight bevel gear for car differentials. To study the functionality of the gear, we have split it up into entities which could be looked from different views designer, manufacturer, metallurgist, …. The metrologist is interested in the geometry of the entities. After the measurement on coordinate measuring machine, the development of a software enable us to obtain the standard deviations of gears by analysing the position defaults or the intrinsic defaults of all entities. This new approach enables to qualify the whole process planning. Then, the development reported in this paperdeals with the eccentricity between the Net Shape teeth and the assembly surfaces manufactured before heat treatment.

Keywords : process capability precision manufacturing bevel gear geometric control integrated design

Autor: Cyrille Baudouin - Régis Bigot - Stéphane Leleu - Patrick Martin -



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