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Milling Tool of Micro-EDM by Ultrasonic Assisted Multi-Axial Wire Electrical Discharge Grinding Processes

[+] Author Affiliations
Albert Wen-Jeng Hsue, Jun-Jie Wang, Chia-Hung Chang

National Kaohsiung University of Applied Sciences, Kaohsiung, Taiwan

Paper No. MSEC2012-7415, pp. 473-479; 7 pages
doi:10.1115/MSEC2012-7415
From:
  • ASME 2012 International Manufacturing Science and Engineering Conference collocated with the 40th North American Manufacturing Research Conference and in participation with the International Conference on Tribology Materials and Processing
  • ASME 2012 International Manufacturing Science and Engineering Conference
  • Notre Dame, Indiana, USA, June 4–8, 2012
  • Conference Sponsors: Manufacturing Engineering Division
  • ISBN: 978-0-7918-5499-0
  • Copyright © 2012 by ASME

abstract

Conventional micro EDM milling relies on time-consuming WEDG to achieve acceptable quality of micro tools. In this study, a rotational axis augmented to Wire Electrical Discharge Grinding (WEDG) processes with ultrasonic assistance and its application to EDM micro-milling is reported. On its removing mechanism, a quantitative analysis based upon wire-EDM discharge-angle was proposed to clarify fundamental understanding of such a novel multi-axial machining process. Then, a test on EDM micro-milling with 70 microns of diameter tool is conducted. Its significant effects on improving dressing efficiency and surface integrity of micro tools were verified, and the effectiveness for EDM micro-milling with a screw type of tool was also verified experimentally. Because of its geometric properties, the screw surface contributed to deliver debris from machining region to outsider. Therefore, a better EDM micro-milling configuration may be introduced into the micro-EDM manufacturing field.

Copyright © 2012 by ASME

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