臺灣博碩士論文加值系統

在利用端銑刀作輪廓加工時，常以銑切表面之粗糙度作為性能指標來判定工件品質。影響表面粗糙度的因素很多，而切削參數(包含主軸轉速、進給率、切削深度、順逆銑等)係最容易做調整以改善表面粗糙度的，因此是本文主要探討的參數。為節省實驗時間與成本，本文係採用田口實驗方法，規劃實驗流程，進而找出最佳的加工參數，以達到提高加工品質的目標。

Surface roughness is one of the most important performance or quality measures for end-milling contouring process. Among the enormous parameters for roughness, cutting conditions that includes the spindle speed, federate, depth of cut, etc. are easy to be manipulated and therefore are our main concerns in the thesis. To improve the machining quality as well as the experimental efficiency, we use Taguchi’s method to schedule the experiment procedure and thereby determine the optimal cutting parameters.

誌謝………………………………………i
摘要………………………………………ii
ABSTRACT………………………………………iii
目錄………………………………………iv
圖目錄………………………………………vii
表目錄………………………………………ix
第一章 緒 論………………………………………1
1.1前言………………………………………1
1.2 文獻回顧………………………………………2
1.3 研究動機與目的………………………………………4
1.4 本文架構………………………………………5
第二章 理論分析………………………………………6
2.1 表面粗糙度………………………………………6
2.1.1 表面粗糙度產生的原因…………………………………6
2.1.2 影響粗糙度的因素………………………………………8
2.1.3 定義表面粗糙度………………………………………9
2.1.4 端銑刀刀刃運動路徑與表面粗糙度……………………13
2.2 田口方法理論………………………………………14
2.2.1 參數設計………………………………………15
2.2.2 直交表………………………………………16
2.2.3 信號雜訊比………………………………………17
2.2.4 變異數分析(ANOVA)及貢獻度計算…………………………18
第三章 實驗器材與步驟………………………………………22
3.1 實驗設備………………………………………22
3.1.1 CNC三軸切削中心機………………………………………22
3.1.2 銑切刀具………………………………………23
3.1.3 加工工件………………………………………24
3.1.4 表面粗糙度量測儀………………………………………25
3.1.5 CNC模擬程式………………………………………26
3.1.6 表面粗糙度擷取程式………………………………………27
3.1.7 工具顯微鏡………………………………………28
3.2 實驗方法………………………………………29
3.2.1 實驗步驟………………………………………29
3.2.2 決定設計參數………………………………………31
3.2.3 水準數及直交表配表………………………………………32
3.2.4 規劃切削路徑………………………………………33
3.2.5 表面粗糙度的量測………………………………………35
第四章 實驗結果與分析………………………………………36
4.1 實驗數據分析………………………………………36
4.1.1 量測表面粗糙度與計算S/N比…………………………36
4.1.2 S/N比分析………………………………………37
4.2 變異數分析(ANOVA)………………………………………39
4.3 驗證實驗………………………………………41
第五章 結果與討論………………………………………45
5.1 結論………………………………………45
5.2 未來展望………………………………………46
參考文獻………………………………………47

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