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研究生: 張金正
Chang, Jin-Jeng
論文名稱: 多孔瓦片靜動壓混合軸承之改良與精進
Improvements of the Porous Hybrid Hydrostatic-dynamic Bearing
指導教授: 蕭德瑛
Shaw, De-In
口試委員: 宋震國
Sung, Cheng-Kuo
林士傑
Lin, Shih-Chieh
學位類別: 碩士
Master
系所名稱: 工學院 - 動力機械工程學系
Department of Power Mechanical Engineering
論文出版年: 2019
畢業學年度: 107
語文別: 中文
論文頁數: 75
中文關鍵詞: 液靜壓軸承液動壓軸承多孔隙材料
外文關鍵詞: hydrostatic, hydrodynamic, porous
相關次數: 點閱:3下載:0
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  • 本研究改良現有靜動壓混合軸承,即在傳統液靜壓軸承之油腔中放置多孔材料瓦片,使軸承同時具有靜壓及動壓的性能特性以適應主軸在不同轉速下的工作情形。
    本研究將基於前人所製造之多孔瓦片軸承,改善瓦片脫落與瓦片於軸承接合處的漏油情形,同時各周邊零件將會以接近真實實驗的環境進行性能量測,並發想一可拆裝瓦片的新型軸承架構,以因應未來替換不同材料瓦片的需求。
    設計階段使用CAE軟體協助設計相關零件並評估軸承性能,製造完成後將於量測平台上進行實驗加以驗證並以理論計算結果比較差異。


    A new type of hydrostatic-dynamic bearing is introduced in this study. By putting pads made of sintered porous material in the chambers, the new bearing remain the same performance of a traditional hydrostatic bearing at start-up and low speeds but benefits from hydrodynamic effects at high rotating speeds.
    This study is based on a hydrostatic-dynamic bearing built by previous researchers. A new way to attach the pad to the bearing chamber is developed to solve the leaking problem. Related parts are tested individually under close-to experiment environments. An assembled bearing is also attempted in case the porous material needs to be changed.
    CAE software is used to help designing and estimating the performance of the bearing. The bearing is tested on a platform to see its real performance and the results are compared to numerical results.

    摘要 目錄 第一章 緒論 1 1.1研究背景與動機 1 1.2 靜壓軸承文獻回顧 4 1.3 靜動壓軸承文獻回顧 7 1.4多孔材料軸承文獻回顧 11 1.5研究目標 15 第二章 基礎理論與推導 16 2.1 雷諾方程式 16 2.2 流量與流阻 19 2.2.1 小孔節流器 20 2.2.2 封油面流阻 22 2.3 達西滲透定律 25 第三章 軸承設計 27 3.1 軸承檢討與改進 28 3.2 新型軸承設計 30 3.2.1 焊接式軸承 30 3.2.2 組裝式軸承 32 3.2.3 軸承結構剛性模擬 34 3.3 軸承規格參數 35 第四章 周邊零件實驗 36 4.1 瓦片密封實驗 36 4.2 瓦片滲透率實驗 40 4.3 節流器流阻實驗 46 4.4 溫昇模擬與實驗 49 4.4.1 熱變形模擬 49 4.4.2 液壓油黏度實驗 51 4.5 渦電流位移計校正 53 第五章 軸承製造與性能實驗 55 5.1 軸承製造 55 5.2 流量實驗 57 5.3 軸承剛性實驗 59 5.3.1 實驗設備 59 5.3.2 油膜厚度與結構剛性量測 62 5.3.3 軸承靜剛性實驗 65 5.3.4 軸承動剛性實驗 68 第六章 結論與未來展望 71 參考文獻 73

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