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Unformatted text preview: facturing, 341– 350. © 2007 Springer. 342 T. H. M. Nguyen et al. resulting in sufficiently accurate realisation of critical dimensions for a given part, without requiring the time consuming tasks of geometric calculations or simulations [Shpitalni et al., 1999]. Other authors used tolerance verification as a tool to generate or validate the (partial) bend sequences [De Vin, 1996], [Inui et al., 1998]. These contributions consisted of a deterministic approach in which accumulated errors in a worst-case scenario were compared to preset tolerances. In contrast, 3D Monte-Carlo simulations have been used to estimate the total achievable accuracy, which is used in turn as a tool to select an appropriate process plan from a list of prepared solutions [Hagenah, 2003]. However, due to the computational restrictions, mainly simplified physical models and limited influencing factors have been covered in this approach. Other contributions focussed on investigating the factors leading to inaccuracy in sheet metal bending. Among those, an intensive...
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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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