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論文名稱(中文) 銑削參數對不同板厚之平面度影響探討
論文名稱(英文) Influence of Cutting Parameters on The Flatness Under Different Thickness in Machining.
校院名稱 成功大學
系所名稱(中) 機械工程學系
系所名稱(英) Department of Mechanical Engineering
學年度 102
學期 1
出版年 102
研究生(中文) 林玠成
研究生(英文) Chieh-cheng Lin
學號 N16004690
學位類別 碩士
語文別 中文
論文頁數 88頁
口試委員 口試委員-李偉賢
口試委員-何應勤
指導教授-王俊志
中文關鍵字 平面度  板件變形量預測  銑削變形  切削參數 
英文關鍵字 flatness  the deformation after milling  cutting parameters  the prediction of deformation under different thickness 
學科別分類
中文摘要 板型工件銑削加工製程中,材料被銑刀移除後,將會在工件表面產生殘留應力,於工件夾持力鬆開後使工件產生變形,此變形量會隨著加工參數的不同而有所改變,而隨著板厚的減少,殘留應力所產生之變形會越趨明顯,因此其變形量便成為衡量成品品質的重要指標,而針對切削參數對加工後平面度影響的分析便應運而生;另一方面當隨著薄板厚度變薄,材料移除量較大的加工參數會變得不易加工,容易在加工的過程中將材料切破且耗費時間與成本。
因此本文分為兩部分,首先研究切削參數對薄板變形量與表面粗糙度之影響,分析主軸轉速、每刃進給與軸向切深對上述兩衡量成品品質指標的影響,並比較不同切削液供給方式之加工結果與切削參數於系統中影響變形量與表面粗糙度所佔之比重,以作為薄板加工製程切削參數選擇之參考。
本文第二部分建立一薄板不同厚度之變形量預測模式,利用相同的切削參數於不同厚度板件產生相同殘留應力的概念建立模式,移除薄板材料至某一厚度,量測得其變形量,即可預測其餘板厚銑削後之變形量;由驗證實驗證實此預測模式所得之變形量與實驗值之誤差幾乎落在10%之內,可判定此模式為準確,運用於工業或實驗上之分析,可大幅減少加工之成本與時間。
英文摘要 In the milling process, residual stress induced by machining made plate deformed after the clamped force was removed. The amount of deformation affect by the cutting parameters, as it differs along with the change of cutting parameters. When the plate becomes thinner, the deformation of the plate becomes much more distinct. As a result, analyzing how the cutting parameters influenced the deformation would be helpful to modify the parameters in process to get better flatness. On the other hand, when the plate was machining thinner, the plate dilapidated under some cutting parameter with greater material removal rate.
This research included two parts. First, study the influence of cutting parameters- spindle speed, feed per tooth and axial depth- on deformation and surface roughness. Then compare the processing result and how each cutting parameters affect the amount of deformation and surface roughness between different kinds of coolant supply. Therefore, it would be helpful for cutting parameters choosing.
The second part in this study is to establish a prediction model. The model use the concept that amount of residual induced by milling with some cutting parameters remain the some value near the surface of the work piece to derive the prediction model, it could predict the deviation under the different plate thickness.
論文目次 摘要 I
Abstract II
誌謝 III
目錄 IV
圖目錄 VII
表目錄 X
符號說明 XIII
第一章 緒論 1
1.1 動機與目的 1
1.2文獻回顧 2
1.2.1加工後產生殘留應力相關論文 2
1.2.2加工後變形相關論文 7
1.3研究方法與範疇 7
第二章 田口實驗方法 11
2.1 田口實驗方法概述 11
2.2直交表簡介 12
2.3品質特性與因子水準 14
2.3.1 品質特性 14
2.3.2 因子水準 14
2.4信號雜音比(Signal-to-Noise Ratio,S/N比) 15
2.5回應圖表之建立 16
2.6變異數分析 18
2.7設計最佳化與確認實驗 19
第三章 薄板銑削加工後不同厚度變形量預測模式 20
3.1 銑削加工於材料表面產生殘留應力與變形之機制 20
3.2薄板銑削後不同厚度變形量預測模式 22
第四章 實驗設備與規劃 28
4.1 實驗刀具與材料選用 28
4.2實驗設備與儀器 30
4.2.1 工件夾持裝置 32
4.2.2 超音波二流體霧狀噴霧實驗設備 39
4.2.3平面度量測方法與器材 41
4.2.4 表面粗糙度量測方法與實驗儀器 44
4.3 切削參數對薄板變形量與表面粗糙度影響實驗規劃 45
4.4 薄板不同厚度變形量預測實驗規劃 46
第五章 切削參數對薄板變形量與表面粗糙度影響實驗結果與討論 47
5.1 Al6061-T6 與Al6061-T651材料銑削後比較 47
5.2 傳統溼切削下各切削參數對薄板變形量與表面粗糙度之影響 48
5.3 乾切削下各切削參數對薄板變形量與表面粗糙度之影響 54
5.4 超音波二流體霧狀切削液下各切削參數對薄板變形量與表面粗糙度之影響 58
5.5 三種切削液使用加工結果比較 63
第六章 薄板銑削加工後不同厚度變形量預測模式實驗驗證 69
6.1 實驗之變異討論 69
6.2 殘留應力深度z0計算方法 70
6.3 不同厚度下薄板之變形量預測模式驗證實驗 76
6.3.1 與建立模式實驗銑削型態、進刀方向、切削液相同之驗證實驗 77
6.3.2 不同銑削型態之驗證實驗 78
6.3.3 不同切削液之驗證實驗 79
6.3.4不同切削路徑之驗證實驗 80
6.3.5 利用不同試片預測不同厚度下之變形量驗證實驗 81
第七章 結論與建議 83
7.1 結論 83
7.2 建議 84
參考文獻 85
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