An experimental study on the geometry of microholes in microelectric discharge machining

Shape and dimensional geometry of blind microholes produced by microelectric discharge machining (micro-EDM) is investigated experimentally to explore the relational dependency with respect to machining time. For this purpose, microholes are machined with machining times ranging from 1-80min on plastic mold steel samples using tungsten carbide tool electrode and hydro carbide dielectric liquid composed of mineral and synthetic oils. All other operational machining parameters such as pulse time, gap voltage, average current, and so forth, are kept constant during machining. Depth, diametric expansions, end-tip shape, wall side parallelisms of holes were analyzed both on surface and cross-sections of the samples. Consequently, nine different end-tip shape formations were observed, and these shapes discussed on basis of dielectric liquid circulation and sparking conditions during machining. Enlargement in hole diameter was predicted by defining a band-width of 20µm hole expansion. Moreover, parallel wall-side length was expressed as the microhole depth where 5% reduction in entrance diameter was measured at the tapered section.

Dergi Adı Materials and Manufacturing Processes
Dergi Cilt Bilgisi 24
Dergi Sayısı 12
Sayfalar 1236 - 1241
Yayın Yılı 2009
Eser Adı
[dc.title]
An experimental study on the geometry of microholes in microelectric discharge machining
Yazar
[dc.contributor.author]
Öpöz T.T.
Yazar
[dc.contributor.author]
Ekmekci B.
Yazar
[dc.contributor.author]
Erden A.
Yayın Yılı
[dc.date.issued]
2009
Yayın Türü
[dc.type]
article
Özet
[dc.description.abstract]
Shape and dimensional geometry of blind microholes produced by microelectric discharge machining (micro-EDM) is investigated experimentally to explore the relational dependency with respect to machining time. For this purpose, microholes are machined with machining times ranging from 1-80min on plastic mold steel samples using tungsten carbide tool electrode and hydro carbide dielectric liquid composed of mineral and synthetic oils. All other operational machining parameters such as pulse time, gap voltage, average current, and so forth, are kept constant during machining. Depth, diametric expansions, end-tip shape, wall side parallelisms of holes were analyzed both on surface and cross-sections of the samples. Consequently, nine different end-tip shape formations were observed, and these shapes discussed on basis of dielectric liquid circulation and sparking conditions during machining. Enlargement in hole diameter was predicted by defining a band-width of 20µm hole expansion. Moreover, parallel wall-side length was expressed as the microhole depth where 5% reduction in entrance diameter was measured at the tapered section.
Kayıt Giriş Tarihi
[dc.date.accessioned]
2019-12-23
Açık Erişim Tarihi
[dc.date.available]
2019-12-23
Yayın Dili
[dc.language.iso]
eng
Konu Başlıkları
[dc.subject]
Geometry of micro holes
Konu Başlıkları
[dc.subject]
Micro hole manufacturing
Konu Başlıkları
[dc.subject]
Micro tool wear
Konu Başlıkları
[dc.subject]
Microelectrical discharge machining
Haklar
[dc.rights]
info:eu-repo/semantics/closedAccess
ISSN
[dc.identifier.issn]
1042-6914
İlk Sayfa Sayısı
[dc.identifier.startpage]
1236
Son Sayfa Sayısı
[dc.identifier.endpage]
1241
Dergi Adı
[dc.relation.journal]
Materials and Manufacturing Processes
Dergi Sayısı
[dc.identifier.issue]
12
Dergi Cilt Bilgisi
[dc.identifier.volume]
24
Tek Biçim Adres
[dc.identifier.uri]
https://dx.doi.org/10.1080/10426910903129422
Tek Biçim Adres
[dc.identifier.uri]
https://hdl.handle.net/20.500.12628/4216
Görüntülenme Sayısı ( Şehir )
Görüntülenme Sayısı ( Ülke )
Görüntülenme Sayısı ( Zaman Dağılımı )
Görüntülenme
17
09.12.2022 tarihinden bu yana
İndirme
1
09.12.2022 tarihinden bu yana
Son Erişim Tarihi
18 Mayıs 2024 13:17
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Tıklayınız
machining liquid dielectric carbide diameter end-tip during samples microholes Consequently discussed shapes observed formations different cross-sections parallelisms section surface analyzed tapered measured parallel defining wall-side length Moreover expansion expressed band-width predicted circulation microhole reduction Enlargement
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