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研究生： 黃繼賢
Ji-Xian Huang
論文名稱： 結合電泳與磁力研磨之精密拋光技術研發
指導教授： 顏炳華
Biing-Hwa Yan
口試委員:
學位類別： 碩士
Master
系所名稱： 工學院 - 機械工程學系
Department of Mechanical Engineering
畢業學年度： 94
語文別： 中文
論文頁數： 115
中文關鍵詞： 磁力研磨 、田口實驗法 、表面粗糙度 、電泳沉積 、磁性磨粒 、非結合性磨料
外文關鍵詞： surface roughness, ferromagnetic particles, magnetic abrasive finishing, magnetic abrasives, unbonded magnetic abrasive (UMA), Taguchi method
相關次數： 點閱：19  下載：0 
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    • 本文為研究結合電泳與磁力研磨之精密拋光製程技術之研發，其目的為改善傳統拋光技術中，對於精密模具加工表面粗糙度品質難以控制之問題，並提供一種設備簡單、操作容易，可得到高表面精度的加工拋光技術。
    本文研究重點分成二大部份：第一部份主要針對磁力研磨拋光對表面粗糙度之影響探討；主要探討利用非結合性磨料對平面拋光的功效，藉由田口實驗獲得一組較佳參數，再以顯著因子分別作單因子實驗，對其作一特性探討與表面精度觀察。由實驗結果可知磁力研磨能有效改善試片表面粗糙度，可使粗糙度值由1.7μm降低至0.23μm。雖然可以獲得極大的改善，但拋光後的表面卻呈現霧面狀態，無法達到預期所需之效果。
    第二部份則是探討磁力結合電泳拋光對表面粗糙度之影響；主要是將磁力研磨機制與電泳沉積法結合，進行拋光加工實驗，並對其特性作一討論。由實驗結果可知磁力結合電泳拋光能使放電表面之原始粗糙度1.7μm，於20分鐘後改善為0.08μm，達到鏡面效果。
    由本文實驗結果證實，電泳與磁力研磨之精密拋光製程可有效改善表面加工後之粗糙度及降低技術成本與人員訓練費用，縮短生產週期進而提高生產效率，相當具有產業競爭力。

    In this paper, the electrophoresis-magnetic abrasive finishing（EMAF） is applied to the design of a new polishing process. The chief end of EMAF is improving the traditional polishing technology that has the results of uncontrollable quality of machined surface and developing a simple finishing equipment
    In the first stage of the study, The finishing characteristics of SKD61 electrical discharge machined surface in MAF using the unbonded magnetic abrasive (UMA) is investigated. The unbonded magnetic abrasive is a mechanical mixture of ferromagnetic particles and viscoelastic abrasives. Experimental results shows that the surface roughness of the SKD61 workpiece can be improved from 1.7µm Ra to 0.23µm Ra but the surface is mat.
    In the second stage of the study, to elevate the finishing performance, an electrophoresis-magnetic abrasive finishing , which is a compound polishing process by involving the traditional MAF and electrophoresis, is developed.
    The advantage of the compound polishing process is that the magnetic abrasives with electrophoresis using Al2O3 particle still can move and polish along the profile of a complex surface. Experimental results shows that the mirror-like finished surface of 0.08µm Ra can be produced from 1.7µm Ra using the new process.

    第一章 緒論 1 1-1 研究動機與目的 1 1-2 研究背景 2 1-3 文獻回顧 3 1-3-1 磁力研磨拋光 3 1-3-2 電泳沉積拋光 7 1-4 研究方法 8 1-5 論文架構 9 第二章 實驗基礎原理與方法 10 2-1 放電加工原理 10 2-1-1 放電加工基本原理 10 2-1-2 放電加工的材料去除機制 12 2-1-3 放電加工參數設定及其影響 15 2-1-4 放電加工的優缺點 18 2-1-5 放電加工面的改善方式 19 2-2 田口式實驗法 21 2-2-1田口式品質工程概念 21 2-2-2 品質特性 24 2-2-3 品質損失函數與S/N比的詮釋 25 2-2-4 影響製程或品質績效的因子 27 2-2-5 參數設計的步驟 29 第三章 磁力研磨拋光之研究 32 3-1 前言 32 3-2 磁力研磨之加工原理 34 3-3 實驗設備、材料與方法 37 3-3-1 實驗設備 37 3-3-2 實驗材料 43 3-3-3 實驗方法 46 3-4 結果與討論 48 3-4-1 田口實驗結果 48 3-4-1-1 田口式實驗規劃 48 3-4-1-2 磁力研磨田口實驗結果 53 3-4-2 單一參數實驗結果 57 3-4-2-1 加工間隙對表面粗糙度之影響 57 3-4-2-2 鋼砂量對表面粗糙度之影響 59 3-4-2-3 主軸轉速對表面粗糙度之影響 61 3-4-3 較佳參數組合與表面觀察 63 3-5 結論 67 第四章 磁力複合電泳拋光之研究 68 4-1 前言 68 4-2 電泳沉積之加工原理 68 4-2-1 電泳簡史與發展 68 4-2-2 電雙層理論 69 4-2-3 電荷動力學 70 4-2-4 粉體粒子表面電荷來源 71 4-2-5 電泳沉積法原理 72 4-3 實驗設備、材料與方法 74 4-3-1 實驗設備 74 4-3-2 實驗材料 77 4-3-3 實驗方法 78 4-4 結果與討論 81 4-4-1 時間對粗糙度的影響 81 4-4-2 轉速對粗糙度的影響 82 4-4-3 荷重對粗糙度的影響 83 4-4-4 電壓對粗糙度的影響 84 4-4-5 電泳沉積機制對表面拋光之影響比較 85 4-4-6 較佳拋光參數組合與表面觀察 86 4-4-7 利用較佳的參數對曲面作拋光 90 4-5 結論 93 第五章 總結論 94 參考文獻 96 個人簡歷 100

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