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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 黃光裕(Kuang-Yuh Huang) | |
dc.contributor.author | Guan-Chung Ting | en |
dc.contributor.author | 丁貫中 | zh_TW |
dc.date.accessioned | 2023-03-19T23:36:23Z | - |
dc.date.copyright | 2022-10-14 | |
dc.date.issued | 2022 | |
dc.date.submitted | 2022-09-13 | |
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dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/86090 | - |
dc.description.abstract | 高速主軸被大量使用於硬脆材料鑽孔機、微加工機與醫療器械。精密微型軸流式氣渦輪因其超高轉速、自體冷卻以及無電磁場干擾等特性,且具有高輸出功率/重量比、高扭矩輸出與低轉動慣量/低反應時間等優勢,十分適合於微型高速主軸上之運用。 本論文之目的為分析探討及實驗驗證精密微型軸流式氣渦輪之設計與操作參數對輸出性能影響關係。研究由設計目標之精密微型軸流式氣渦輪開始,並針對所開發氣渦輪之設計與操作參數對輸出性能之影響關係,進行分析探討與實驗驗證。 設計階段由微型軸流式氣渦輪之概念結構設計著手,應用電腦輔助設計(CAD)與電腦輔助製造(CAM)軟體,配合四軸精密CNC加工機與斜角銑刀等特殊工具,設計開發出軸流式氣渦輪葉扇3D模型,所開發氣渦輪之關鍵渦輪葉扇可由精密機台程式化大量生產,降低製造時間與成本。由設計模型與加工經驗,定義目標氣渦輪之尺寸與設計參數以供性能分析所用。 氣渦輪之理論模型經推導後,可得到氣渦輪性能之統御方程式。然而氣渦輪之理論模型應用於微型尺度時,存在問題與缺點使分析結果失真。本論文運用計算流體力學(CFD)軟體,分析探討其性能、設計及操作參數之關係。主要設計參數為進氣口數量、進氣口角度與渦輪葉扇幾何外型,操作參數為供氣壓力,而關鍵性能參數則以最大空轉速度、啟動扭矩及輸出功率等為主。 根據設計與模擬之模型,開發出實體微型軸流式氣渦輪裝置,與氣渦輪性能量測平台。所開發之氣渦輪進行並完成相關實驗性能量測與驗證,並與模擬結果進行比較分析。 本論文之研究成果為:(1) 開發新式精密微型軸流式氣渦輪,其性能經量測後符合設計需求與標準,可供應用於微型高速主軸。(2) 設計開發階段考慮加工因素與應用輔助軟體,所設計完成之氣渦輪組件可達到高精密等級與降低加工成本。(3)主要由計算流體力學軟體進行之氣渦輪性能分析,可探討其設計、操作與性能參數之間的關係。(4)經由實際實驗,驗證所開發氣渦輪之實際性能滿足設計需求,並經由比較模擬與實驗結果,確認模擬分析結果之正確性與可行性。 | zh_TW |
dc.description.abstract | The ultra-high-speed spindle system is widely used in various industrial and medical fields, such as printed circuit board (PCB) drilling, micro machining, and dental handpiece. The compressed air driven ultra-high-speed turbine-spindle system has multiple advantages such as self-cooling and insensible to electro-magneto interference. The axial turbine inherits advantages such as higher output power to mass ratio, higher torque output, low response time, and simpler airways when compared with the radial turbine. The purpose of this research is to develop a precision miniature axial turbine. The objective is to enhance its efficiency and precision in diverse application areas such as dental operation and micro machining. The development process consists the design and configuration, performance analysis and experimental verification. In the design and configuration process, the model of precision miniature axial turbine has been developed. From the conceptual design, detailed design with the consideration of manufacturability and precision is then iterated using computer aided design (CAD) and computer aided manufacturing (CAM) software tools. The key dimensions and the design parameters of the miniature axial turbine are defined for the simulation study and prototype fabrication. Theoretical model and computational fluid dynamics (CFD) simulation have been conducted for performance analysis of developed turbine. The preliminary performance analysis is achieved by the theoretical model, but several problems and disadvantages also revealed. The CFD simulation has been selected as the primary tool for performance analysis of developed turbine. The important performance parameters of developed turbine are set to be obtained from simulation. For the experimental verification, the actual precision miniature axial turbines are manufactured with different design parameters. With the experimental result, the real performance of developed turbine and the accuracy of CFD simulation are investigated and analyzed. In conclusion, a novel precision miniature axial turbine has been developed in this research. The newly-developed precision miniature axial turbine is proven to accomplish the objective. The development process has been conducted thoroughly. The performance analysis by CFD simulation predicts the performance of developed axial turbine. The relationship among design, operation, and performance parameters is investigated. The experimental verification validated the actual performance of developed axial turbine and the accuracy of CFD simulation with measurement result. | en |
dc.description.provenance | Made available in DSpace on 2023-03-19T23:36:23Z (GMT). No. of bitstreams: 1 U0001-0208202223583300.pdf: 19167181 bytes, checksum: c766238bdd866f96c25db3f7ff0e6397 (MD5) Previous issue date: 2022 | en |
dc.description.tableofcontents | 摘要 i Abstract ii Contents iii List of Figures vi List of Tables xi Nomenclature xii 1. Introduction 1 1.1 Background and motivation 1 1.2 Literature review 4 1.2.1 Micro turbine and spindle for micro machining 4 1.2.2 Turbine design 8 1.2.3 Computational fluid dynamics (CFD) 14 1.2.4 Bearings and components 19 1.2.5 Various Applications 20 1.2.6 Summary of references 22 1.3 Purpose, objective and methodology 23 1.4 Chapter organization 28 2. Design and configuration 29 2.1 Concept and Structure of axial turbine 30 2.2 CAD and CAM design 34 2.2.1 CNC Turning and milling machine 35 2.2.2 CAD model development 37 2.3 Prototype manufacture of component 46 2.4 Configuration of the precision miniature axial turbine 51 2.5 Summary of design and configuration 55 3. Performance analysis 57 3.1 Performance analysis by theoretical model 58 3.1.1 Working principle and theoretical models of axial turbine 58 3.1.2 Dimensionless parameters 64 3.1.3 Losses 67 3.1.4 Theoretical solution of the developed axial turbine 70 3.1.5 Summary of theoretical performance analysis 74 3.2 Performance analysis by CFD simulation 77 3.2.1 Target model and design parameters 77 3.2.2 Mesh and simulation settings 82 3.2.3 Transient simulation 84 3.2.4 Steady-State simulation 88 3.3 Summary of performance analysis 107 4. Experimental verification 109 4.1 Experimental setup 109 4.1.1 Specimens of turbine system 109 4.1.2 Experimental platform 111 4.2 Inlet volume flow rate of supplied air Qsu 116 4.3 Maximum no-load rotational speed ωmax 118 4.4 Stall Torque τsta 121 4.5 Dynamic output torque τ 123 4.5.1 Dynamic output torque from acceleration 124 4.5.2 Dynamic output torque from braking 128 4.5.3 Maximum dynamic output torque and inlet pressure of supplied air. 130 4.6 Dynamic output power Pot 131 4.6.1 Dynamic output power Pot from acceleration 131 4.6.2 Dynamic output power Pot from braking 133 4.6.3 Maximum dynamic output power and inlet pressure of supplied air 135 4.7 Efficiency 136 4.8 Rotational stability 138 4.8.1 Free deceleration 138 4.8.2 Acoustic noise 140 4.9 Overall performance and conclusion from experiment 141 4.9.1 Performance conclusion 141 4.9.2 Relationship among design, operation, and performance parameters 142 4.9.3 Comparison between CFD simulation and experimental result 143 4.9.4 Comparison with radial Twin-Bladed air turbine [6] 145 5. Conclusion 147 5.1 Developed precision miniature axial turbine 147 5.2 Design and configuration process 150 5.3 Performance analysis 151 5.4 Experimental verification 153 5.5 Future work 154 References 156 Appendix 161 | |
dc.language.iso | en | |
dc.title | 分析探討及實驗驗證精密微型軸流式氣渦輪之設計與操作參數對輸出性能影響關係 | zh_TW |
dc.title | Analysis, Investigation, and Experimental Verification of Relationship Among Design, Operation, and Performance Parameters for Precision Miniature Axial Turbine | en |
dc.type | Thesis | |
dc.date.schoolyear | 110-2 | |
dc.description.degree | 博士 | |
dc.contributor.author-orcid | 0000-0002-5999-9037 | |
dc.contributor.advisor-orcid | 黃光裕(0000-0002-2981-4986) | |
dc.contributor.oralexamcommittee | 蔡得民(Der-Min Tsay),廖先順(Hsien-Shun Liao),蔡協澄(Hsieh-Chen Tsai),李宇修(Yu-Hsiu Lee) | |
dc.contributor.oralexamcommittee-orcid | 蔡得民(0000-0003-0335-9329),廖先順(0000-0003-1338-0332),蔡協澄(0000-0002-4240-4332),李宇修(0000-0003-4363-2051) | |
dc.subject.keyword | 微型高速主軸,精密加工,軸流式氣渦輪,計算流體力學,實驗驗證, | zh_TW |
dc.subject.keyword | Precision,Miniature spindle,Axial turbine,CFD,Experimental verification, | en |
dc.relation.page | 187 | |
dc.identifier.doi | 10.6342/NTU202201994 | |
dc.rights.note | 同意授權(全球公開) | |
dc.date.accepted | 2022-09-13 | |
dc.contributor.author-college | 工學院 | zh_TW |
dc.contributor.author-dept | 機械工程學研究所 | zh_TW |
dc.date.embargo-lift | 2023-03-01 | - |
顯示於系所單位: | 機械工程學系 |
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