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Unformatted text preview: on operations. In this paper, a complete methodology is developed and implemented to assign process tolerances and locator tolerances to satisfy design tolerance requirements and optimize the assignment with genetic algorithm to reduce 213 J.K. Davidson (ed.), Models for Computer Aided Tolerancing in Design and Manufacturing, 2 1 3 – 224. © 2007 Springer. 214 H. Song et al. cost and/or cycle time without sacrificing product quality. This work is part of a comprehensive computer aided tolerance analysis (CATA) system developed by CAM Lab, WPI (Monte Carlo simulation based tolerance stack up analysis and quality control plan are discussed in separated papers). 2. LITERATURE REVIEW Tolerance assignment is an important area where the product designer and process planner often need to work closely together. Despite the intensive studies in tolerancing, this area has been neglected by most researchers. This section reviews papers on some closely related issues, e.g. the tolerance synthesis/allocation, manufacturing cost models, and application of genetic algorithm in tolerancing. 2.1. Tolerance synthesis/allocation Most of the established tolerance synthesis methods are focusing on assembly processes, allocating the assembly functional tolerance to the individual workpiece tolerance to ensure that al...
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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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