The complexity of the assembly line due to the number of parts, stations and its high production rate, places a high demand on the tooling equipment. Tooling failure diagnosis based on in-line measurements is an important issue in the dimensional control, and various efforts have been made in the past. However, there were no models available to describe the overall body assembly processes for the purposes of process monitoring and diagnosis in manufacturing. In this paper, a state space modeling approach is developed for the dimensional control of sheet metal assembly processes. In this study, a conventional heuristic 3-2-1 scheme is assumed for the sheet metal assembly. Several key concepts, such as tooling locating error, part accumulative error, and re-orientation error, are defined. The inherent relationships among these error components are developed. Those relationships finally lead to a state space model which describes the variation propagation throughout the assembly process. An observation equation is also developed to represent the relationship between the observation vector (the in-line Optical Coordinate Measuring Machine OCMM measurement information) and the state vector (the part accumulative error). Potential usage of the developed model is discussed in the paper.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    State space modeling of sheet metal assembly for dimensional control


    Additional title:

    Zustandsvariablenmodell der Blechbauteilmontage zur Maßkontrolle


    Contributors:
    Jin, J. (author) / Shi, J. (author)


    Publication date :

    1999


    Size :

    7 Seiten, 7 Bilder, 18 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




    Modeling and analysis of compliant sheet metal assembly variation

    Yu, Kuigang / Fin, Sun / Lai, Xinmin et al. | Tema Archive | 2008


    Observing Dimensional Variation in an Automotive Sheet-Metal Sub-Assembly

    Rolfe, Bernard Frank / Cardew-Hall, Michael / Matuszyk, Timothy Ian | SAE Technical Papers | 2006


    Observing dimensional variation in an automotive sheet-metal sub-assembly

    Matsuszyk,T.I. / Cardew-Hall,M. / Rolfe,B.F. et al. | Automotive engineering | 2006


    Aircraft sheet metal part numerical control detection method and system based on three-dimensional modeling

    WANG TIANZHONG / XU QINGHUA / LIU XUDONG | European Patent Office | 2022

    Free access

    The dimensional quality of sheet metal assembly with welding-induced internal stress

    Shiu, B. W. / Shi, J / Tse, K. H. | SAGE Publications | 2000