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Electrodischarge Drilling of Microholes in c-BN

Cubic boron nitride (c-BN) is a “difficult-to-cut” material. High precision machining of this material is problematic because it is difficult to control the material removal rate and maintain acceptable accuracy. This paper describes an application of electrodischarge machining (EDM) for drilling mi...

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Autores principales: Wyszynski, Dominik, Bizon, Wojciech, Miernik, Krzysztof
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7074580/
https://www.ncbi.nlm.nih.gov/pubmed/32050510
http://dx.doi.org/10.3390/mi11020179
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author Wyszynski, Dominik
Bizon, Wojciech
Miernik, Krzysztof
author_facet Wyszynski, Dominik
Bizon, Wojciech
Miernik, Krzysztof
author_sort Wyszynski, Dominik
collection PubMed
description Cubic boron nitride (c-BN) is a “difficult-to-cut” material. High precision machining of this material is problematic because it is difficult to control the material removal rate and maintain acceptable accuracy. This paper describes an application of electrodischarge machining (EDM) for drilling micro holes in c-BN. The goal of this research was to determine a set of parameters and technical specifications for such a process. We used an isoenergetic transistor power supply with a microsecond voltage pulse generator and a tungsten tool electrode of diameter d = 381 μm. Each hole was drilled for 10 min. The holes did not exceed 410 μm in diameter and were at least 1000 μm deep. The process was carried out in a hydrocarbon dielectric liquid. We assess the quality of the holes from a qualitative and quantitative point of view. The results show that electrodischarge is a precise, accurate, and efficient method for machining c-BN.
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spelling pubmed-70745802020-03-20 Electrodischarge Drilling of Microholes in c-BN Wyszynski, Dominik Bizon, Wojciech Miernik, Krzysztof Micromachines (Basel) Article Cubic boron nitride (c-BN) is a “difficult-to-cut” material. High precision machining of this material is problematic because it is difficult to control the material removal rate and maintain acceptable accuracy. This paper describes an application of electrodischarge machining (EDM) for drilling micro holes in c-BN. The goal of this research was to determine a set of parameters and technical specifications for such a process. We used an isoenergetic transistor power supply with a microsecond voltage pulse generator and a tungsten tool electrode of diameter d = 381 μm. Each hole was drilled for 10 min. The holes did not exceed 410 μm in diameter and were at least 1000 μm deep. The process was carried out in a hydrocarbon dielectric liquid. We assess the quality of the holes from a qualitative and quantitative point of view. The results show that electrodischarge is a precise, accurate, and efficient method for machining c-BN. MDPI 2020-02-10 /pmc/articles/PMC7074580/ /pubmed/32050510 http://dx.doi.org/10.3390/mi11020179 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Wyszynski, Dominik
Bizon, Wojciech
Miernik, Krzysztof
Electrodischarge Drilling of Microholes in c-BN
title Electrodischarge Drilling of Microholes in c-BN
title_full Electrodischarge Drilling of Microholes in c-BN
title_fullStr Electrodischarge Drilling of Microholes in c-BN
title_full_unstemmed Electrodischarge Drilling of Microholes in c-BN
title_short Electrodischarge Drilling of Microholes in c-BN
title_sort electrodischarge drilling of microholes in c-bn
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7074580/
https://www.ncbi.nlm.nih.gov/pubmed/32050510
http://dx.doi.org/10.3390/mi11020179
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