Fraunhofer-Institut für Produktionsanlagen und Konstruktionstechnik IPK

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  • Publication
    Beobachtung der Schmierstoffbewegung in Wälzlagern
    ( 1993)
    Spur, G.
    ;
    Göke, U.
    Today in most cases rolling bearings of high-speed spindles of machine tools are lubricated with grease or oil. The practicable advantages of the oil minimum quantity lubrication cannot be used completely, because there is a deficiency of knowledge concerning the motion of oil in the bearing. At the IWF layers of oil on the surface of ball bearings and their change at different parameters have been observed with a high-speed camera. From the results conclusions are drawn about the best location of oil supply.
  • Publication
    Öl-Luftschmierung von Wälzlagern
    ( 1992)
    Spur, G.
    ;
    Göke, U.
    The successful application of the oil/air lubrication presupposes the favourable setting of the parameters. This report deals with results based on a statistical design of experiments. A test stand with a spindel/bearing system has been built to measure the temperature rise at the inner race way of an angular contact ball bearing, it's friction torque and the change of preload. The values to be variied were the viscosity of the oil, the position of the nozzle, the oil and the air volume.
  • Publication
    Optimierung der Öl-Minimalmengenschmierung zum Einsatz bei höheren Drehzahlen. Abschlußbericht DFG Sp84/103-1
    ( 1992)
    Spur, G.
    ;
    Göke, U.
    The oil/air lubrication is one procedure of the minimum quantity lubrication methods to provide roller bearings. Within the research project there have been carried through theoretical and experimental studies. On the one hand there have been steps to improve the knowledge about the favourable settings of different parameters that influence the running conditions of a test stand. Furthermore using a high-speed camera pictures were taken from a single roller bearing ball to observe the motion of oil on the surface. On the other hand analytical approaches in modelling the kinematics of a ball bearing and an angular contact ball bearing have been accomplished. These knowledge is to be regarded as the basis for calculating the motion of oil on a ball's surface.