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2023 | OriginalPaper | Chapter

Localization of Discharges in Drilling EDM Through Segmented Workpiece Electrodes

Authors : K. Thißen, S. Yabroudi, E. Uhlmann

Published in: Production at the Leading Edge of Technology

Publisher: Springer International Publishing

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Abstract

In drilling EDM different flushing methods and electrode geometries are applied to improve the process stability and avoid form deviations as a consequence of discharges in the lateral working gap. These methods are usually reviewed indirectly by determining target parameters of the process, the tool electrode or the bore hole. A localization of discharges along the bore hole however provides a quantitative measure for the ratio of discharges in the frontal and lateral working gap. This paper presents a setup for localizing discharges by use of a workpiece electrode consisting of electrically insulated segments and performing signal analyses. Tool electrodes with interior and exterior flushing channels are analyzed with this experimental setup to compare the effectiveness of the resulting flushing conditions. It was found that the use of a helix tool electrode leads to an increased material removal rate by at least 11% and a considerable reduction of lateral discharges.

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previous chapter Experimental Investigation of Friction-Drilled Bushings for Metal-Plastic In-Mold Assembly
next chapter Experimental Studies in Deep Hole Drilling of Ti-6Al-4V with Twist Drills
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Metadata
Title
Localization of Discharges in Drilling EDM Through Segmented Workpiece Electrodes
Authors
K. Thißen
S. Yabroudi
E. Uhlmann
Copyright Year
2023
Book
Production at the Leading Edge of Technology

Print ISBN: 978-3-031-18317-1

Electronic ISBN: 978-3-031-18318-8

Copyright Year: 2023

DOI
https://doi.org/10.1007/978-3-031-18318-8_22

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