Title: Material removal mechanisms in ultrasonic-assisted diamond turning of brittle materials

Authors: Fritz Klocke, Axel Demmer, Michael Heselhaus

Addresses: Fraunhofer Institute of Production Technology IPT, Steinbachstrasse 17, 52074 Aachen, Germany. ' Fraunhofer Institute of Production Technology IPT, Steinbachstrasse 17, 52074 Aachen, Germany. ' Fraunhofer Institute of Production Technology IPT, Steinbachstrasse 17, 52074 Aachen, Germany

Abstract: The innovative technology of ultrasonic-assisted turning has already demonstrated the potential to bridge the gap between challenging materials such as steel and glass and ultraprecision machining with monocrystalline diamond tools. Now, extensive technological investigations of this process have been performed to identify the relevant parameters, which determine the material removal mechanisms for the ductile diamond turning of optical glass. In a first step, the complex kinematics, which correspond to the combination of the constant spindle speed and the high-dynamic oscillation of the tool, have been simulated. The material removal mechanisms have been identified on the basis of the results of these investigations.

Keywords: production process; diamond turning; glass machining; material removal; ultrasonic-assisted turning; ultrasonic-assisted machining.

DOI: 10.1504/IJMPT.2004.004249

International Journal of Materials and Product Technology, 2004 Vol.20 No.4, pp.231 - 238

Published online: 10 May 2004 *

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