The paper describes the design of disk machines which are used to simulate the contact and scuffing conditions in high-speed aerospace gears and rolling contact bearings. The main advantage of disk machines as a means of predicting the behavior of heavily loaded lubricated contacts found in gears and rolling element bearings is the simplicity and relatively low cost of the test specimens. In ground gears the surface finish of the teeth is predominantly in the direction perpendicular to that in which rolling and sliding takes place, and in order to reproduce this configuration in disk tests it is necessary to axially grind the specimens. This has been achieved using a novel grinding/generating process which also gives a self-aligning crowned geometry, thus avoiding spurious edge effects. In the case of rolling element bearings, surface finish is generally of a much higher quality with finish predominantly in the rolling direction. The disk machine developed for simulation of this type of contact therefore uses honed/polished surfaces. The calculated values of minimum EHL (elastohydrodynamic lubrication) film thickness just prior to scuffing in the M50 tests showed remarkable constancy (in the range 0.100 micron to 0.109 micron). This observation lends support to the idea of calculated EHL film thickness in relation to roughness as a criterion for scuffing. Results obtained from the disk machines are shown corresponding to typical high-speed/high-temperature conditions found in aerospace practice.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Determination of gear and bearing material scuffing limits using high-speed disk machines


    Weitere Titelangaben:

    Bestimmung der Freßgrenzen für Zahnrad- und Lagerwerkstoffe mit Hilfe von Hochgeschwindigkeits-Scheibenmaschinen


    Beteiligte:
    Snidle, R.W. (Autor:in) / Evans, H.P. (Autor:in) / Alanou, M.P. (Autor:in)


    Erscheinungsdatum :

    2001


    Format / Umfang :

    16 Seiten, 12 Bilder, 9 Quellen





    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Gear Scuffing Characteristics

    Ku, P. M. | SAE Technical Papers | 1962


    Influence of Micro-Geometry on Gear Scuffing

    Ganti, V. / Dewangan, Y. / Arvariya, S. et al. | British Library Conference Proceedings | 2015


    Influence of Micro-Geometry on Gear Scuffing

    Arvariya, Saurabh / Madhavan, Shyamsananth / Ganti, Venu et al. | SAE Technical Papers | 2015



    Piston ring scuffing

    Murray,E.J. / Hepworth and Grandage,Bradford,GB | Kraftfahrwesen | 1977