臺灣博碩士論文加值系統

表面粗糙度是精密加工的最重要性能指標之一。本文主要係探討曲面球銑加工時，切削參數對表面粗糙度之影響。所探討之表面粗糙度包括沿進給方向與路徑間隔方向之粗糙度。切削參數則包含每刃進給、主軸轉速、路徑間隔、及曲面法線方向及與刀軸方向形成的角度。在本研究中，我們分別設計13組與19組不同之切削數據，以建立沿進給方向與路徑間隔方向之粗糙度模型與相關參數。依據此粗糙度模型，我們可以拿來預測粗糙度，並做為決定刀具路徑及切削參數之依據，進而提升加工精度與效率。

Surface roughness is one of the most important performance indices for precision machining. This thesis presents an analysis on the effects of cutting parameters on surface roughness in ball-end milling process. The surface roughness in both feed direction and transverse direction is investigated. The cutting parameters include the feed, the spindle speed, the path interval, and the angle between the surface normal and the tool axis. In the study, 13 and 19 sets of data are conducted to establish empirical models for surface roughness in the feed and the transverse directions, respectively. Based on the proposed model, we can predict the surface roughness, design the tool paths and cutting parameters, and consequently, improve the machining quality and efficiency.

誌謝 I
摘要 II
Abstract III
目錄 IV
圖目錄 VI
表目錄 VII
符號索引 VIII
第一章　緒論 1
1.1 前言 1
1.2 研究動機與目的 2
1.3 文獻回顧 4
1.4 研究方法 6
1.5 本文研究架構 7
第二章　相關理論 8
2.1 刀具切削幾何理論 8
2.1.1 刀具進給方向之粗糙度 9
2.1.2 路徑間隔方向之粗糙度 12
2.2 表面粗糙度 15
2.2.1 表面粗糙度定義 15
2.2.2 影響表面粗糙度因素 19
2.3 多重線性回歸 20
2.3.1 最小平方法(method of least square) 20
2.3.2 變異數 21
第三章　實驗設備與實驗方法 24
3.1 實驗流程 24
3.2 實驗設備、刀具與材料 25
3.2.1 三軸切削中心加工機 25
3.2.2 表面粗糙度量測儀 26
3.2.3銑削刀具 28
3.2.4 加工材料 29
3.3 實驗步驟 30
3.4 實驗參數 31
3.4.1 進給方向實驗參數 31
3.4.2 路徑間隔方向實驗參數 32
第四章　實驗結果與分析 33
4.1 進給方向結果分析 33
4.1.1 實驗數據量測 33
4.1.2 進給方向粗糙度ε_fc回歸 34
4.1.3 路徑間隔之影響 35
4.1.4 實驗驗證 36
4.2 路徑間隔方向結果分析 37
4.2.1 實驗數據量測 37
4.2.2 路徑間隔方向粗糙度ε_lc回歸 38
4.2.3每刃進給之影響 40
4.2.4 實驗驗證 41
第五章　結論與未來展望 42
5.1 結論 42
5.2 未來展望 44
參考文獻 45

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