Abstract:

The choice of a manufacturing process (machine tools, cutting tools, part-holders, process plan) which allows the production of parts conform with the objective in terms of quality and price depends on many criteria. One of these is the compliance with the functional part tolerances. To check this point, the manufacturing process is simulated (positioning and machining operations). This simulation results in a Model of Manufactured Part (MMP). The deviations of all the MMP surfaces are described with regards to their nominal position (nominal part) using a small displacement torsor. Then, for all the functional tolerances to be checked, a virtual gauge is designed and developed and assembled with the MMP and the gap between the tolerance zone and the toleranced surface is calculated. The verification of each tolerance is performed via a...