Aircraft Virtual Assembly System

Assembly plays very important role to ensure product quality.Performing product assembliability analysis during the product design stage so as to solving the would occur assembly problems as early as possible is of great meanings to ensure the product assembliability,enhance assembly efficiency,lower product cost and shorten R&Dtime.This thesis researches product assembliability analysis technique based on vector-loop tolerance analysis model and dynamic assembly process planning and simulation, providing designers both static and dynamic assembliability analysis tools.Through static assembly analysis,the assembly tolerance design could be verified and the tolerance accumulation effects to the product assembliability would be evaluated;Through dynamic assembly analysis,the product assembly process would be planned and simulated to ensure the product has feasible assembly sequence and non-interference assembly path.Main research topics include:1) Research and establish virtual assembly system prototype architecture with tolerance information.2) Research tolerance analysis modeling technique;discuss one kind of vector loop based assembly tolerance analysis model,which takes fully account of dimension tolerance,geometric feature tolerance and kinematics effects.3) Research direct linear tolerance analysis algorithm.4) Research the effects of tolerance to the assembly sequence and path planning;improve the assembly sequence and path generating algorithms.5) The assembly process analysis capability of the virtual assembly system prototype is realized and embedded into the general UG CAD plaform.