本論文的主要目的在於發展出一套創新的拋光刀具系統之硬體架構，此拋光系統可加裝在CNC工具機上，並且可以用來拋光軸對稱自由曲面工件，精密拋光的工作只要是去移除表面輪廓誤差，經由形狀誤差補償策略，可將工件上的形狀誤差精準的移除，因而提升加工精度。該系統主要包括三個自由度機構，一個可補償偏心的機構和一個介於刀具與馬達之間的無振盪的連接器。
該機構是為了滿足刀具軌跡的運動。這些運動要確保該刀具可以發揮三個特定的功能，第一個是要刀具旋轉軸線與工件法線保持固定夾角；第二個是控制刀具磨耗率分佈，以減少刀具磨耗對加工率的影響；最後一個目標是拋光表面上，每一個點的拋光品質達到均勻化。這機構的概念設計是透過把問題拆解的策略來進行。
這偏心的補償器是為了降低刀頭偏心對於加工率的變化，這補償器擁有一個平移運動並且受限於一個彈簧，當刀具裝置補償器上，透過研究得知，一個適當的彈簧常數能夠明顯的降低刀頭偏心的影響，這項研究將表明，刀具質量越小而補償偏心的效益更高。
這無振盪的連接器主要是分離刀具與馬達，因此馬達的質量並不包含在刀具上，但還保留驅動的功能。連接器分成兩個部分，一部分是連接在刀具端而另一部分裝置在馬達端，這兩部分並沒有懸接在一起。然而，這兩部分的運動事會互相牽制。因此，馬達與刀具能夠維持驅動的功能。如果這連接的部分是一個軟性的材質，據悉，可以隔絕馬達振動傳至刀具上。

The goal of this thesis is to develop a novel polishing tool system, which can be attached to a CNC machine tool and execute a precision polishing job for an axially symmetric free surface. The precision polishing job is to remove the error surface profile, left by the previous machining process, on the work to improve its form precision. The system mainly includes a mechanism of 3 degrees of freedom, a misalignment compensator mounted on the mechanism, and an oscillation-free connector between tool and driver.
The mechanism was designed to meet the required motions of tool trajectories. These motions are to assure the tool can play three specific functions. The first one is to keep the tool axis maintain a constant angle with the normal of polished surface. The second one is to control the wear rate distribution of tool to reduce the effect of tool wear on polishing rate. The final one is to achieve the goal of uniform polishing quality at every spot of polished surface. The conceptual design of this mechanism is done based on a strategy of problem decomposition.
The misalignment compensator is to reduce the effect of tool misalignment on the variation of polishing rate. The compensator allows a translational motion and is constrained by a spring. When the tool is mounted on the compensator, the study will show that with a proper spring constant the effect of tool misalignment can be significantly reduced. The study will indicate that the smaller the tool mass is the higher the compensation efficiency can be.
The oscillation-free connector is to separate the tool and its driver so that the mass of driver is not included in tool, while the driving function retains. It is composed of two parts. One part is connected to tool and the other one is mounted on driver. These two parts are not joined together by any mean. However, the motions of two parts will interfere with each other. Thus, the driving function between tool and drive can be maintained. It is noted that the vibration of driver can be successfully isolated from the tool if a soft material is attached to one part.

謝 誌 I
目 錄 II
圖索引 V
表索引 VIII
中文摘要 IX
Abstract X
第一章 緒論 1
11 研究動機與方法 1
12 現有拋光法之回顧 6
13 內容介紹 9
第二章 理想之拋光系統 10
21 不同加工潤滑區對加工率之影響 10
22 液動壓拋光之點、線、面拋光特性簡介 15
23 理想拋光系統之特性 22
231 加工率具有可控制性 22
232 擁有工件表面均勻性 31
第三章 滿足運動自由度之機構設計 33
31 高精密拋光之刀具系統之機構設計 33
311 滿足法線拋光之機構設計 33
312 滿足抑制刀具磨耗之機構設計 36
313 等向性拋光之機構設計 39
314 滿足刀具運動模式之機構設計 43
32 刀具系統之討論 43
第四章 撓性系統之設計 46
41 滿足直線平移運動機構設計 46
42 建立刀具系統的動態模型 49
43 系統參數對刀頭在垂直分量的絕對振動比值之影響 52
431 刀具質量與懸吊剛性對刀頭在垂直分量的絕對震動比
值之影響 52
432 懸吊剛性與rubber modulus 對刀頭在垂直分量的絕對震
動比值之影響 60
433 操作頻率與搖擺角度對刀頭在垂直分量的絕對震動比
值的影響 63
44 整體刀具系統之運動模式 66
第五章 討論 68
第六章 結論與未來發展 70
參考文獻 73
附錄一 76
附錄二 78
附錄三 83
附錄四 85
附錄五 89

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