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Ultrasonic-assisted micro-EDM of deep bores: Process and discharge analysis

Ultraschallunterstützte Mikrofunkenerosion von tiefen Bohrungen
: Schubert, Andreas; Zeidler, Henning; Wolf, Nicolas; Hackert-Oschätzchen, Matthias; Schneider, Jörg

Shore, P. ; European Society for Precision Engineering and Nanotechnology -EUSPEN-:
12th International Conference of the European Society for Precision Engineering and Nanotechnology 2012. Proceedings. Vol.2 : June 4th - 7th 2012, Stockholm, Sweden
Bedford: Euspen, 2012
ISBN: 978-0-9566790-0-0
European Society for Precision Engineering and Nanotechnology (EUSPEN International Conference) <12, 2012, Stockholm>
Conference Paper
Fraunhofer IWU ()
micro-EDM; vibration assistance; process analysis

Ultrasonic vibration has been found very beneficial for the micro electro discharge machining (ìEDM) of deep microstructures with high aspect ratios. In this study, the discharge properties of ìEDM aided with direct ultrasonic workpiece vibration are analysed and compared to conventional ìEDM machining. It can be shown that not only the number of discharges per second is significantly improved, but also the typical height of the discharge current is differently distributed. The investigation shows that the amount of open circuit states in ìEDM can be noticeably reduced by using ultrasonic vibration assistance.