Fixtures play a key role in locating workpieces to manufacture high quality products within many processes of the product lifecycle. Inaccuracies in workpiece location lead to errors in position and orientation of machined features on the workpiece, and strongly affect the assemblability and the final quality of the product. The accurate positioning of workpiece on a fixture is influenced by rigid body displacements and rotations of the workpiece. In this paper, a systematic approach is introduced to investigate the located workpiece position errors. A new mathematical formulation of fixture locators modeling is proposed to establish the relationship between the workpiece position error and its sources. Based on the proposed method, the final locating errors of the workpiece can be accurately estimated by relating them to the specific dimensional and geometric errors or tolerances of the workpiece and the related locators. The proposed method is developed for error analysis based on worst case and statistical approaches. The application of the presented method is illustrated through presenting an example and the computational results are compared with the results of simulation of the case study in a CAD/CAM system.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    An Efficient Method for Workpiece Locating Error Prediction in Machining Process


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    SAE 2016 World Congress and Exhibition ; 2016



    Publication date :

    2016-04-05




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    An efficient method for workpiece locating error prediction in machining process

    Khodaygan,S. / Sharif Univ.of Technol.,IR | Automotive engineering | 2016


    Algorithm for workpiece locating design

    Guangfeng Chen, / Yize Sun, | IEEE | 2006


    Tool for oversized heavy workpiece and machining process of oversized heavy workpiece

    MOU XINGHUA / OU YANG / CHEN SIJIE et al. | European Patent Office | 2020

    Free access

    Machine tool for machining a workpiece

    GEISSLER ALFRED / TRENKLE MICHAEL / RIEDEL SEBASTIAN | European Patent Office | 2022

    Free access

    Conveying device for galvanized sheet workpiece machining

    YANG JIANHUI / YANG LINA / LI HUI et al. | European Patent Office | 2024

    Free access