Influence of machining parameters and tool geometry on tool wear during cobalt chromium-molybdenum micro drilling
Cobalt chromium (CoCr) alloys find extensive use in medical applications due to their unique mechanical properties, such as high strength and low thermal conductivity. However, machining these alloys poses challenges as they are classified as hard-to-cut materials, leading to issues like short tool...
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| Format: | Article |
| Language: | English |
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Penerbit UTM Press
2024
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| Online Access: | http://eprints.utm.my/109050/1/MohdAzlan2024_InfluenceofMachiningParametersandTool.pdf |
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| author | Abdul Patar, Mohd. Affifudin Suhaimi, Mohd. Azlan Sharif, Safian Amrifan S. Mohruni, Amrifan S. Mohruni Hisam, Muhammad Juzaili Shaharum, Mohd. Sallehuddin |
| author_facet | Abdul Patar, Mohd. Affifudin Suhaimi, Mohd. Azlan Sharif, Safian Amrifan S. Mohruni, Amrifan S. Mohruni Hisam, Muhammad Juzaili Shaharum, Mohd. Sallehuddin |
| author_sort | Abdul Patar, Mohd. Affifudin |
| collection | ePrints |
| description | Cobalt chromium (CoCr) alloys find extensive use in medical applications due to their unique mechanical properties, such as high strength and low thermal conductivity. However, machining these alloys poses challenges as they are classified as hard-to-cut materials, leading to issues like short tool life, poor surface quality, and low productivity. Rapid tool wear is a significant problem when machining hard alloys, with cutting parameters, drill bit geometry, and types of cutting fluids being the main factors influencing tool wear. In this study, a series of experiments was conducted to investigate the influence of different cutting speeds and tool geometry on tool wear during micro drilling of CoCrMo. A flood cooling system was employed throughout the study, with a constant machining feed rate of 0.1 mm/rev. Three cutting tools with different point angles (118°, 130°, and 140°) and a diameter of 0.2 mm were utilized. The cutting speeds of 50 m/min, 65 m/min, and 80 m/min were varied. A total of 11 runs were performed, with each run consisting of drilling 30 holes. Forces, torques, and tool wear were measured after every subsequent 10 holes drilled. The results indicate that the combination of a 140° point angle and an 80 m/min cutting speed yielded the best performance, exhibiting the lowest force, torque, and tool wear values. The study highlights the importance of selecting appropriate cutting speeds and tool geometry to minimize tool wear and improve machining efficiency when working with CoCr alloys. |
| first_indexed | 2025-02-19T02:45:01Z |
| format | Article |
| id | utm.eprints-109050 |
| institution | Universiti Teknologi Malaysia - ePrints |
| language | English |
| last_indexed | 2025-02-19T02:45:01Z |
| publishDate | 2024 |
| publisher | Penerbit UTM Press |
| record_format | dspace |
| spelling | utm.eprints-1090502025-01-28T06:47:43Z http://eprints.utm.my/109050/ Influence of machining parameters and tool geometry on tool wear during cobalt chromium-molybdenum micro drilling Abdul Patar, Mohd. Affifudin Suhaimi, Mohd. Azlan Sharif, Safian Amrifan S. Mohruni, Amrifan S. Mohruni Hisam, Muhammad Juzaili Shaharum, Mohd. Sallehuddin TJ Mechanical engineering and machinery Cobalt chromium (CoCr) alloys find extensive use in medical applications due to their unique mechanical properties, such as high strength and low thermal conductivity. However, machining these alloys poses challenges as they are classified as hard-to-cut materials, leading to issues like short tool life, poor surface quality, and low productivity. Rapid tool wear is a significant problem when machining hard alloys, with cutting parameters, drill bit geometry, and types of cutting fluids being the main factors influencing tool wear. In this study, a series of experiments was conducted to investigate the influence of different cutting speeds and tool geometry on tool wear during micro drilling of CoCrMo. A flood cooling system was employed throughout the study, with a constant machining feed rate of 0.1 mm/rev. Three cutting tools with different point angles (118°, 130°, and 140°) and a diameter of 0.2 mm were utilized. The cutting speeds of 50 m/min, 65 m/min, and 80 m/min were varied. A total of 11 runs were performed, with each run consisting of drilling 30 holes. Forces, torques, and tool wear were measured after every subsequent 10 holes drilled. The results indicate that the combination of a 140° point angle and an 80 m/min cutting speed yielded the best performance, exhibiting the lowest force, torque, and tool wear values. The study highlights the importance of selecting appropriate cutting speeds and tool geometry to minimize tool wear and improve machining efficiency when working with CoCr alloys. Penerbit UTM Press 2024-03 Article PeerReviewed application/pdf en http://eprints.utm.my/109050/1/MohdAzlan2024_InfluenceofMachiningParametersandTool.pdf Abdul Patar, Mohd. Affifudin and Suhaimi, Mohd. Azlan and Sharif, Safian and Amrifan S. Mohruni, Amrifan S. Mohruni and Hisam, Muhammad Juzaili and Shaharum, Mohd. Sallehuddin (2024) Influence of machining parameters and tool geometry on tool wear during cobalt chromium-molybdenum micro drilling. Jurnal Teknologi, 86 (2). pp. 101-114. ISSN 0127-9696 http://dx.doi.org/10.11113/jurnalteknologi.v86.20842 DOI:10.11113/jurnalteknologi.v86.20842 |
| spellingShingle | TJ Mechanical engineering and machinery Abdul Patar, Mohd. Affifudin Suhaimi, Mohd. Azlan Sharif, Safian Amrifan S. Mohruni, Amrifan S. Mohruni Hisam, Muhammad Juzaili Shaharum, Mohd. Sallehuddin Influence of machining parameters and tool geometry on tool wear during cobalt chromium-molybdenum micro drilling |
| title | Influence of machining parameters and tool geometry on tool wear during cobalt chromium-molybdenum micro drilling |
| title_full | Influence of machining parameters and tool geometry on tool wear during cobalt chromium-molybdenum micro drilling |
| title_fullStr | Influence of machining parameters and tool geometry on tool wear during cobalt chromium-molybdenum micro drilling |
| title_full_unstemmed | Influence of machining parameters and tool geometry on tool wear during cobalt chromium-molybdenum micro drilling |
| title_short | Influence of machining parameters and tool geometry on tool wear during cobalt chromium-molybdenum micro drilling |
| title_sort | influence of machining parameters and tool geometry on tool wear during cobalt chromium molybdenum micro drilling |
| topic | TJ Mechanical engineering and machinery |
| url | http://eprints.utm.my/109050/1/MohdAzlan2024_InfluenceofMachiningParametersandTool.pdf |
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