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Reliability evaluation of auto body multistation seriesparallel hybrid assembly system
Published:2018-12-13 author:LIU Jingcai, YANG Jing Browse: 1787 Check PDF documents
                               Reliability evaluation of auto body multistation seriesparallel hybrid assembly system
                                                                                  LIU Jingcai, YANG Jing
    (School of Mechanical Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China)




Abstract: Aiming at the problem of auto body reliability incomplete evaluation for deviation factors, correlation between reliability factors, process decline, the structure of locating pin deviation source were studied. The locating pin wear model was established according to the dimension of the locating hole, the size and quality of the slot and the positioning ability of the positioning pin. The correlation between the reliability of system elements was analyzed. According to the theory of Copula function, the correlation model was established.Consider the reliability of all KPC points on the product, the weight of the whole product quality reliability was assigned, and the quality reliability of the product was modeled by combining the weight and the quality reliability of a single KPC point. The idea of material incomingoutput flow was proposed to simplify the series parallel hybrid system.Finally,a reliability evaluation model of dynamic multi station body serial and parallel hybrid assembly system considering dynamic input of each deviation source was proposed. Taking an assembly system for a car body as an example, the manufacturing cost was optimized based on the proposed reliability model, and a preventive maintenance strategy was presented.The results indicate that the reliability model has a high accuracy and can be used to guide the optimization of manufacturing cost and to contribute preventive maintenance strategy.

Key words: auto body assembly; system reliability; series parallel hybrid assembly system
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