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Unformatted text preview: e analysis of gap and flush defects for automotive exterior body panels. It consists in verifying if the chosen tolerances on functional contact surfaces of an assembly (mechanism in open- 245
J.K. Davidson (ed.), Models for Computer Aided Tolerancing in Design and Manufacturing, 2 45 – 254. © 2007 Springer. 246 J.-P. Petit, S. Samper and I. Perpoli chain constituted of four parts) allow a functional requirement between two of these parts. A representation of the consequences of the designer’s choices on the geometry variations of the assembly will be given in a CAD environment. 2. MODEL OF CLEARANCES AND DEVIATIONS DOMAINS International standards [ISO 1101] allow to represent every geometric specification by a tolerance zone. This zone is built on the nominal geometry of the toleranced feature. The tolerance will be validate if the real feature (the theoretical geometric element actually) associated to the nominal feature lies inside the tolerance zone. In our model, a general datum frame is built for the mechanism. A datum frame is attached to each functional associated feature and ano...
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This note was uploaded on 08/03/2010 for the course DD 1234 taught by Professor Zczxc during the Spring '10 term at Magnolia Bible.
- Spring '10
- The Land