本論文目的在探討拋光法過程中不同工件表面波長(work’s wavelength)對終極粗度(ultimate roughness)的效應，此處終極粗度定義為應用拋光法於粗度移除時所能達到之最小粗度。研究內容將包括實驗分析及理論研究兩部分，實驗分析的部份為經由實驗的方法觀察分析有關不同操作條件對不同工件表面波長之終極粗度的影響；理論研究部分則透過對不同參數下之單一磨粒移除率的探討，推導出有關不同表面波長效應之終極粗度理論，最後並以實驗結果驗證理論所呈現的定性關係。

實驗結果顯示波長愈大則終極粗度愈大，且刀具轉速及刀具粗度對終極粗度的影響均不明顯，而理論部分則提出當表面粗度移除效率小於某定義值時則終極粗度發生，此處粗度移除效率為針對加工深度與粗度改善量的比例而言。最後並根據粗度移除效率之電腦模擬結果建立一終極粗度數學模式描述表面波長、操作條件以及材料參數對終極粗度的效應，而數學模式指出在大波長部分的終極粗度會較小波長部分之終極粗度為高，且終極粗度不敏感於刀具轉速及負載的變化，此趨勢與實驗結果吻合。

The effects of work’s surface wavelength on the ultimate surface roughness are considered in this study. Both the experimental and theoretical studies will be done in this study. In the experimental study, the relationships between ultimate surface roughness and various operating parameters will be examined. In the theoretical study, a mathematical model relating the machining rate and various machining parameters are proposed. In the mathematical model, qualitative and quantitative properties of machining rate under various surface geometric condition are obtained by the aid of computer simulation.

For the experimental study, a series of experiments will be done to investigate the effects of various factors on the ultimate surface roughness of different work’s surface wavelength.The factors may include the the tool speed, the tool’s surface irregularity, and the particle density of slurry.

The comouter simulation indicates that the removal rate is non-linear proportional to tool speed and normal load. Besides, results also showed that the difference of removal rate between peak and valley of surface profile always decreases as the work’s surface wavelength increases. The experimental study confirmed that the relationship between ultimate roughness and wavelength does exist in the specific range of work’s surface wavelength . The model appears to be consistent with currently available experimental data.

目錄


謝誌……………………………………………………………………………i
英文摘要………………………………………….…………………………ii
中文摘要……………………………………………………………………iii
目錄………………………………………………………………………… iv
圖索引………………………………………………………………………vii
表索引………………………………………………………………………xii

第一章 緒論………………………………………………………………1
1.1 前言………………………………………………………………………1
1.2 研究動機…………………………………………………………………2
1.3 研究方法…………………………………………………………………4
1.4 內容介紹…………………………………………………………………6

第二章 液動壓拋光法加工特性及終極粗度理論之回顧………………7
2.1 液動壓拋光法之簡介……………………………………………………7
2.2 不同潤滑條件之加工率特性探討………………………………………9
2.2.1 非接觸潤滑狀態加工率之特性…………………………………10
2.2.2 半接觸潤滑狀態加工率之特性…………………………………13
2.3 終極粗度之理論基礎……………………………………………………20
2.4 結論………………………………………………………………………21

第三章 液動壓拋光法終極粗度之實驗規劃與結果……………………22
3.1 實驗考量…………………………………………………………………23
3.2 實驗規劃…………………………………………………………………24
3.3 實驗系統儀器之簡介……………………………………………………25
3.4 實驗結果…………………………………………………………………27
3.5 結論………………………………………………………………………29

第四章 單一磨粒移除能力與表面波長效應之探討……………………30
4.1 拋光法表面材料移除機制之探討………………………………………30
4.2 磨粒純滾動運動下之動態分析與移除特性……………………………32
4.3 單一磨粒於表面移除機制之受力分析及動態方程式之建立…………37
4.3.1滾動滑動並存下之力方程式建立………………………………37
4.3.2 磨粒於表面動態及移除行為之探討………………………… 39
4.3.3介面吸附能大於材料表面能之材料移除機制探討……………39
4.3.4 應用動力學觀念求解拋光法單一磨粒移除率之動態……… 40
4.4 工件表面幾何效應之探討………………………………………………43
4.4.1 磨粒與工件表面接觸面積之探討…………………………… 43
4.4.2工件表面幾何對粗度移除效應之探討…………………………44
4.5 結論………………………………………………………………………46

第五章 拋光法移除率及工件表面終極粗度模式之建立與特性分析… 47
5.1 單一磨粒移除率之特性分析……………………………………………47
5.1.1 不同操作條件對磨粒移除動態之效應………………………………49
5.1.2 不同材料參數對磨粒移除動態之效應………………………………51
5.2 拋光法粗度移除效率特性之分析…………………………………52
5.2.1 粗度移除效率之定義………………………………………52
5.2.2 粗度移除效率之分析………………………………………55
5.3 終極粗度特性之探討………………………………………………57
5.3.1 終極粗度數學模式之建立…………………………………57
5.3.2 終極粗度特性之分析…………………………………………………58
5.4 終極粗度理論分析與實驗結果之討論……………………………59
5.5 結論…………………………………………………………………60
第六章 結論……………………………………………………………… 62
參考文獻………………………………………………………………………64
附錄………………………………………………………………………… 162

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