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Critical parameters in ultrasonic assisted diamond turning of hardened steel alloys

Kritische Parameter beim ultraschallunterstützten Diamantdrehen von gehärteten Stählen
 
: Klocke, F.; Dambon, O.; Bulla, B.; Heselhaus, M.

European Society for Precision Engineering and Nanotechnology -EUSPEN-:
EUSPEN 2009, 9th International Conference of the European Society for Precision Engineering & Nanotechnology. Proceedings. Vol.1 : 2nd-5th June 2009, San Sebastian, Spain
Bedford: Euspen, 2009
ISBN: 978-0-9553082-6-0
pp.37-40
European Society for Precision Engineering and Nanotechnology (International Conference) <9, 2009, San Sebastian>
English
Conference Paper
Fraunhofer IPT ()
Diamantwerkzeug; Drehen; gehärteter Stahl; Härte; Oberflächenrauigkeit; Ultraschallbearbeiten

Abstract
Ultra-precision machining with raonocrystalline diamonds is limited to non-ferrous, some crystalline and plastic materials. However, the development of a vibration assisted machining tool at the Fraunhofer IPT enables this technology to machine ferrous materials, such as steel. This paper describes the newest developments in ultrasonic assisted diamond turning using a worldwide unique 60 kHz oscillator. The investigations will focus on the influence of the critical process parameters on the results and the process quality. The investigations demonstrate, that optical surfaces (Ra < 10 nm) can be generated on hardened steel parts applying ultrasonic assisted diamond turning. The machined steel (STAVAX ESU, 1.2083, X40Crl4) was hardened to 35, 40, 45 and 53 HRC and does not seem to have a considerable influence on the process results. As demonstrated in this paper, a fundamental understanding of the dynamic influencing factors applying the ultrasonic assisted technology is crucial in order to achieve the desired results.

: http://publica.fraunhofer.de/documents/N-114565.html