A methodology for tuning the stiffness of machine tool supports is described based on a stiffness model using the contact stiffness approach. Using this model, the mathematical relationship between the load of the support and its stiffness is established. The relationship is separated into three regions. When the total stiffness of all supports is maximized, the load must be tuned so that the stiffness–support load relationship is in the critical region, whereby the contact stiffness is slightly larger than the bulk stiffness. Correspondingly, a placement method of supports is proposed that increases their stiffness without anchor bolts. The effectiveness of the proposed method is verified in two experiments. In the first experiment, the natural frequency of a small machine tool prototype is compared for several placements of three supports. The lowest natural frequency of the machine tool under the proposed placement scheme is maximized. In the second experiment, the proposed method is applied to increase the lowest natural frequency of a horizontal milling machine. The lowest natural frequency with a distinct arrangement of three supports is increased by 15–55%, compared to other popular placements of these three supports. The experimental results show that the proposed placement method is effective for enhancing the stiffness of machine tool supports.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    A method for stiffness tuning of machine tool supports considering contact stiffness


    Beteiligte:
    Kono, Daisuke (Autor:in) / Nishio, Syuya (Autor:in) / Yamaji, Iwao (Autor:in) / Matsubara, Atsushi (Autor:in)


    Erscheinungsdatum :

    2015


    Format / Umfang :

    10 Seiten, 20 Quellen




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch




    Dynamic Wear Analysis of Clearance Joint Considering Contact Stiffness

    Zhu, Aibin / He, Shengli / Zou, Chao et al. | British Library Online Contents | 2016




    Main Stiffness and Main Damping of Sliding Bearings Considering Local Contact

    Ouyang, W. / Chen, R. / Peng, L. et al. | British Library Online Contents | 2014


    Stiffness Matching Design for Feed System of High-Speed Machine Tool Considering Modal Characteristics

    Liu, H. / Wang, L. / Zhao, W. | British Library Online Contents | 2014