Design and Experimental Investigation on High Efficient Horizontal Micro Electrical Discharge Machine

Abstract:

Micro-electrical discharge machining is a non-contact manufacturing process without macroscopic force. Microelectrode fabrication is the fundamental and influence factor of micro electric discharge machining. As for the efficiency of microelectrode fabrication, this paper proposed a fast online microelectrode fabrication method by an efficient horizontal micro electric discharge machine, in which an online diamond wheel ultra-precision grinding method and an online wire electrical discharge grinding method is combined to fabricate microelectrode. Machine designed in this paper consist of a CCD online dimension examination system, precision motion and feeding system, nanosecond-pulse independent discharged power supply and gap state-detection system. experimental study on microelectrode, micro nozzle fabrication and microstructure milling by the machine conducted. Microelectrode with 15 micrometers in diameter and micro hole with 50 micrometers in diameter are done in experiment. Results show that the composite method improves the efficiency of micro electrical discharge machining.

• Periodical: Applied Mechanics and Materials (Volume 456)
• Pages: 32-37
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.456.32
• Online since: October 2013
• Authors: Xia Yun Shu, Hong Hai Zhang
• Keywords: Electro Discharge Machining, Electrode Fabrication, Micro-EDM, WEDG

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