This paper presents a measurement case study of an automotive stamped sheet metal sub-assembly, in order to build a better understanding of flexible component tolerance stack-up in a physical production line assembly. Here, corresponding points are measured before and after assembly to capture changes in variation. Variation levels, variation stack-up, and positional shifts were investigated. It was found that that in terms of a Process Potential Index (Pp), the assembly was dimensionally better than its components. In some regions variation levels were found to be higher after assembly compared to before: in other regions, variation levels were found to be lower after assembly than before. Observation of positional shifts of features over the assembly process revealed consistent directional changes. Suspected causes are datum-shifts between assembly stations and measurement gauges, and assembly processes deforming/shifting the components in a consistent manner. The findings of this study begin to identify characteristics of variation and tolerance stack-up in flexible sheet-metal assemblies.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

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


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:

    Kongress:

    SAE 2006 World Congress & Exhibition ; 2006



    Erscheinungsdatum :

    03.04.2006




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch


    Schlagwörter :


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

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


    Modeling and analysis of compliant sheet metal assembly variation

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


    IPC2001D016 Demensional Variation Modeling and Simulation of Sheet Metal Assembly

    Jun, L. / Zhongqin, L. / Xinmin, L. et al. | British Library Conference Proceedings | 2001


    Flexible fixture design with applications to assembly of sheet metal automotive body parts

    Arzanpour, S. / Fung, J. / Mills, J.K. et al. | Tema Archiv | 2006


    Hot sheet metal forming in automotive production

    Lamprecht, Klaus / Deinzer, Günter | Tema Archiv | 2008