High speed machining (HSM) using ball nose end mills, is attracting interest in the aerospace industry for the machining of complex 3D aerofoil surfaces in nickel based superalloys and titanium alloys. The paper initially reviews published data detailing the effect of cutter/workpiece orientation (+/- betafN and +/- betaf), tool coatings/materials and cutting environments (spray mist, high pressure flood, etc.) on tool performance. Experimental work is subsequently detailed aimed at determining the effect of cutter orientation, tool coating and cutting environment on tool life, tool wear mechanisms, cutting forces, chip formation, cutting temperature and workpiece surface roughness, when high speed ball nose end milling Inconel 718. A horizontal downwards cutter orientation with high pressure cutting fluid (70 bar, 26 l/min) provided the best tool life with cut lengths of nearly 15 m which were twice as long as when employing a dry cutting environment. Temperature measurements from the implanted thermocouple technique, indicated that high pressure cutting fluid application substantially reduced workpiece temperature from 320 deg C when cutting dry, to 175 deg C.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    High speed ball nose end milling of inconel 718


    Weitere Titelangaben:

    Hochgeschwindigkeitsstirnfräsen von Inconel 718 mit Kugelkopfschaftfräser


    Beteiligte:
    Ng, E.G. (Autor:in) / Lee, D.W. (Autor:in) / Sharman, A.R.C. (Autor:in) / Dewes, R.C. (Autor:in) / Aspinwall, D.K. (Autor:in)

    Erschienen in:

    CIRP Annals ; 49 , 1


    Erscheinungsdatum :

    2000


    Format / Umfang :

    6 Seiten, 17 Bilder, 3 Tabellen, 15 Quellen





    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Simulating 5-Axis Milling with a Ball Nose Cutting Tool

    Chan, Chun / Barrans, Simon | IEEE | 2021


    Sharpening ball-nose mill cutters

    Burch, C. F. | NTRS | 1977


    Chatter and dynamic cutting force prediction in high-speed ball end milling

    Dikshit, Mithilesh K. / Puri, Asit B. / Maity, Atanu | British Library Online Contents | 2017


    High speed milling

    Emerald Group Publishing | 2003