| HIGH THROUGHPUT DRILLING OF TITANIUM ALLOYS |
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| 作者姓名： | SHIH Albert Jau-Min |
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| 作者单位： | Department of |
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| 基金项目： | Selected from Proceedings of the 7th International Conference on Frontiers of Design and Manufacturing (ICFDM’2006). |
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| 摘 要： | The experiments of high throughput drilling of Ti-6Al-4V at 183 m/min cutting speed and 156 mm3/s material removal rate using a 4 mm diameter WC-Co spiral point drill are conducted. At this material removal rate, it took only 0.57 s to drill a hole in a 6.35 mm thick Ti plate. Supplying the cutting fluid via through-the-drill holes and the balance of cutting speed and feed have proven to be critical for drill life. An inverse heat transfer model is developed to predict the heat flux and the drill temperature distribution in drilling. A three-dimensional finite element modeling of drilling is con-ducted to predict the thrust force and torque. Experimental result demonstrates that, using proper machining process parameters, tool geometry, and fine-grained WC-Co tool material, the high throughput machining of Ti alloy is technically feasible.
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| 关 键 词： | 钻空技术 热迁移 钛合金 机械 |
HIGH THROUGHPUT DRILLING OF TITANIUM ALLOYS |
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| SHIH Albert Jau-Min.HIGH THROUGHPUT DRILLING OF TITANIUM ALLOYS[J].Chinese Journal of Mechanical Engineering,2007,20(3):62-66. |
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| Authors: | LI Rui SHIH Albert Jau-Min |
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| Affiliation: | Department of Mechanical Engineering, University of Michigan, Ann Arbor. MI. USA |
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| Abstract: | The experiments of high throughput drilling of Ti-6Al-4V at 183 m/min cutting speed and 156 mm3/s material removal rate using a 4 mm diameter WC-Co spiral point drill are conducted. At this material removal rate, it took only 0.57 s to drill a hole in a 6.35 mm thick Ti plate. Supplying the cutting fluid via through-the-drill holes and the balance of cutting speed and feed have proven to be critical for drill life. An inverse heat transfer model is developed to predict the heat flux and the drill temperature distribution in drilling. A three-dimensional finite element modeling of drilling is conducted to predict the thrust force and torque. Experimental result demonstrates that, using proper machining process parameters, tool geometry, and fine-grained WC-Co tool material, the high throughput machining of Ti alloy is technically feasible. |
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| Keywords: | Titanium Drilling High throughput Inverse heat transfer Finite element modeling TITANIUM ALLOYS DRILLING THROUGHPUT Ti alloy feasible tool geometry machining process parameters Experimental result finite element modeling thrust force torque inverse heat transfer model predict heat flux temperature distribution cutting fluid |
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