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Integrated Synthesis of Assembly and Fixture Scheme for Properly Constrained Assembly

By Byungwoo Lee and Kazuhiro Saitou

Abstract

This paper presents an integrated approach to design an assembly, fixture schemes and an assembly sequence, such that the dimensional integrity of the assembly is insensitive to the dimensional variations of individual parts. The adjustability of critical dimensions and the proper constraining of parts during assembly process are the keys in achieving the dimensional integrity of the final assembly. A top down design method is developed which recursively decomposes a lump of initial product geometry and fixture elements matching critical dimensions, into parts and fixtures. At each recursion, joints are assigned to the interfaces between two subassemblies to ensure parts and fixtures are properly constrained at every assembly step. A case study on a simple frame structure is presented to demonstrate the method

Publisher: ASME
Year: 2004
DOI identifier: 10.1115/DETC2004-57771
OAI identifier: oai:deepblue.lib.umich.edu:2027.42/87224
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