Optimum Design And Knowledge Expression Of Automobile Welding Fixture

Automobile welding fixture is an important process equipment in automobilemanufacturing industry, affecting the entire automotive manufacturing precision andproduction cycle, is also an important factor to ensure the quality of body welding. Fixturedesign existing dependent accumulation and the designer’s knowledge and experience, atthe same time, the defects in the design process, fixture design resource sharing and Kn-owledge representation, retrieval and reuse and so on, insufficient fixture design providesa good technical support.This is "a sub project of the Shandong province science and technologydevelopment plan project-“Research on knowledge of car body welding production linesupport system based on”. The main study is the main subject in two aspects:extractrelative rules design of automobile welding fixture and expression. designautomation based on rules, in order to improve the efficiency of the design.This work is: the automobile welding fixture structure optimization model, andanalyze thecreated different fixture model. summary and proposes the weldingfixture structure parametric model commonly used in automobile, mainly is toparameterize the main dimensions, can change the values of the parameters to change theshape of the model. implementation of automobile welding fixture motionmechanism analysis, and the design rules. We through the movement of the clampopen, have a lookwhether satisfies the constraint condition, if not satisfied, we will changetheparameter values, the model change shape to meet the conditions, from the analysisof a series we extract the design rules, the design for the future lay the foundation.implementation of the welding fixture structure optimization design of automobile, andverified by an example.The research work of this paper is to optimize the design of weldingfixture, theparametric model and the motion analysis, through the analysisof extracted ruleswelding fixture design optimization, and lay the foundation for the design ofautomation. On the other hand, the optimal design for the strength, the weldingfixture optimization method based on genetic algorithm.This paper established a mathematical model of4kinds of fixture design rules,andextracted4kinds of welding. On the other hand, the optimal design forthestrength, the welding fixture optimization method based on genetic algorithm.