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Unformatted text preview: KC Constraint1 … … Figure 6: KC Flowdown. In this application, we add the notion of KC level constraint; we specify the KC link by a mathematical aspect and we focus on the geometrical KC: Indeed, the best way to determine the optimal tolerances is to simulate the influences of deviations on the geometrical behavior of the mechanism. Usually, for mathematical formulation of tolerance analysis or tolerance synthesis, the geometrical behavior is described using different concepts as Variational geometry, Geometrical behavior law, Clearance space and deviation space, Gap space and kinematic models. We principally need a detailed description of each variation to characterize the geometrical behavior. Each variation is a key characteristic: surface deviations of each part (situation deviations and intrinsic deviations) and relative displacements between parts according to gap (gaps and functional characteristics) [Dantan et al, 2005]. Example: α1a /1 , β1a /1 , w1a /1 , α1b /1 , β1b /1 , u1b /1 , v1b /1 , ... 62 J.-Y. Dantan...
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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.

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