Improving Machining Performance for Deep Hole Drilling in the Electrical Discharge Machining Process Using a Step Cylindrical Electrode
The performance of electrical discharge machining for drilling holes decreases with machining depth because the conventional flushing and electrode cannot completely eliminate debris particles from the machining area. In this study, a modified electrode for self-flushing in the electrical discharge...
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| Format: | Article |
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MDPI AG
2021-02-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/11/5/2084 |
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| author | Kamonpong Jamkamon Pichai Janmanee |
| author_facet | Kamonpong Jamkamon Pichai Janmanee |
| author_sort | Kamonpong Jamkamon |
| collection | DOAJ |
| description | The performance of electrical discharge machining for drilling holes decreases with machining depth because the conventional flushing and electrode cannot completely eliminate debris particles from the machining area. In this study, a modified electrode for self-flushing in the electrical discharge machining process with a step cylindrical shape was designed to improve machining performance for deep hole drilling. The experimental results of the step cylindrical electrode showed that the material removal rate increased by approximately 215.7%, 203.8%, and 130.4%, and the electrode wear ratio decreased by approximately 47.2%, 63.1%, and 37.3%, when compared with a conventional electrode for the diameters of 6, 9, and 12 mm, respectively. In addition, the gap clearance and concavity of the side wall of the drilled hole was reduced with the step cylindrical electrode. The limited high flank of the electrode led to an increase in the escape area of the debris that was partially removed from the machining area, and the limited secondary spark on the side wall of the electrode resulted in a reduction in machining time. |
| first_indexed | 2024-03-09T00:29:36Z |
| format | Article |
| id | doaj.art-92ba9e082b6f41e5b4e4bdfcc74a5834 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-09T00:29:36Z |
| publishDate | 2021-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-92ba9e082b6f41e5b4e4bdfcc74a58342023-12-11T18:35:44ZengMDPI AGApplied Sciences2076-34172021-02-01115208410.3390/app11052084Improving Machining Performance for Deep Hole Drilling in the Electrical Discharge Machining Process Using a Step Cylindrical ElectrodeKamonpong Jamkamon0Pichai Janmanee1Mechanical and Industrial Engineering, Faculty of Engineering, Rajamangala University of Technology Krungthep, 2 Nanglinchee, Thungmahamek, Sathon, Bangkok 10120, ThailandMechanical and Industrial Engineering, Faculty of Engineering, Rajamangala University of Technology Krungthep, 2 Nanglinchee, Thungmahamek, Sathon, Bangkok 10120, ThailandThe performance of electrical discharge machining for drilling holes decreases with machining depth because the conventional flushing and electrode cannot completely eliminate debris particles from the machining area. In this study, a modified electrode for self-flushing in the electrical discharge machining process with a step cylindrical shape was designed to improve machining performance for deep hole drilling. The experimental results of the step cylindrical electrode showed that the material removal rate increased by approximately 215.7%, 203.8%, and 130.4%, and the electrode wear ratio decreased by approximately 47.2%, 63.1%, and 37.3%, when compared with a conventional electrode for the diameters of 6, 9, and 12 mm, respectively. In addition, the gap clearance and concavity of the side wall of the drilled hole was reduced with the step cylindrical electrode. The limited high flank of the electrode led to an increase in the escape area of the debris that was partially removed from the machining area, and the limited secondary spark on the side wall of the electrode resulted in a reduction in machining time.https://www.mdpi.com/2076-3417/11/5/2084depth holeEDMself-flushingstep cylindrical electrode |
| spellingShingle | Kamonpong Jamkamon Pichai Janmanee Improving Machining Performance for Deep Hole Drilling in the Electrical Discharge Machining Process Using a Step Cylindrical Electrode Applied Sciences depth hole EDM self-flushing step cylindrical electrode |
| title | Improving Machining Performance for Deep Hole Drilling in the Electrical Discharge Machining Process Using a Step Cylindrical Electrode |
| title_full | Improving Machining Performance for Deep Hole Drilling in the Electrical Discharge Machining Process Using a Step Cylindrical Electrode |
| title_fullStr | Improving Machining Performance for Deep Hole Drilling in the Electrical Discharge Machining Process Using a Step Cylindrical Electrode |
| title_full_unstemmed | Improving Machining Performance for Deep Hole Drilling in the Electrical Discharge Machining Process Using a Step Cylindrical Electrode |
| title_short | Improving Machining Performance for Deep Hole Drilling in the Electrical Discharge Machining Process Using a Step Cylindrical Electrode |
| title_sort | improving machining performance for deep hole drilling in the electrical discharge machining process using a step cylindrical electrode |
| topic | depth hole EDM self-flushing step cylindrical electrode |
| url | https://www.mdpi.com/2076-3417/11/5/2084 |
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