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系統識別號 U0026-0812200912024052
論文名稱(中文) 銑削條件與刀具幾何對比切削係數影響之研究
論文名稱(英文) The Effect of Milling Conditions and Tool Geometry on Cutting Coefficients
校院名稱 成功大學
系所名稱(中) 機械工程學系碩博士班
系所名稱(英) Department of Mechanical Engineering
學年度 94
學期 2
出版年 95
研究生(中文) 郭銘修
研究生(英文) Ming-Hsiu Kuo
學號 n1693157
學位類別 碩士
語文別 中文
論文頁數 69頁
口試委員 召集委員-李榮顯
口試委員-李偉賢
指導教授-王俊志
中文關鍵字 銑削條件  刀具幾何  比切削係數  銑削力  切削速度 
英文關鍵字 milling conditions  tool geometry  cutting coefficients  milling force  cutting speed 
學科別分類
中文摘要 本文主要在探討不同銑削條件與刀具幾何對比切削係數之影響。比切削係數的求法是以實驗所得的時域銑削力訊號,透過最小平方法辨識比切削係數,此法相較於平均力或諧合力的辨識方法,誤差較小。本文利用此法辨識方法比較不同材料(Al 6061-T651、SUS 304和Inconel 718)、不同切削方式(順、逆銑)、不同切削條件(轉速、切深)以及不同刀具幾何(斜角、隙角、螺旋角)之比切削係數的差異,並觀測其變化趨勢。在Al 6061-T651順逆銑的比切削係數實驗中,發現若平均切屑厚度相同,則順逆銑比切削係數差異是很小可以忽略的。另外以不同幾何之刀具銑削SUS 304,實驗發現螺旋角越大其比切削係數越小;而刀口斜角越大的銑刀比切削係數越小,且負斜角的銑刀切削力比正斜角大;而隙角對比切削係數影響很小。而在不同切削速度的比切削係數辨識實驗中發現,銑削Al 6061與SUS 304的過程中,比切削係數隨切削速度上升有下降的趨勢,但Inconel 718的比切削係數反而隨切削速度上升而增加。




英文摘要 This thesis investigates the effect of milling conditions and tool geometry on cutting coefficients. The cutting coefficients are identified by using the Least Square method with the milling force in time domain. The Least Square method has smaller errors than mean force method and harmonic force method to identify the cutting coefficients. The experiment investigates cutting coefficients by choosing different materials (Al 6061-T6, SUS 304 and Inconel 718), milling configuration (up milling, down milling), conditions (different radial of depth), and tool Geometry (rake angle, clearance angle, helix angle). The results of experiments on Al6061 show that the diversity of down milling and up milling can be ignored for the same mean chip thickness. In milling SUS 304 by different tool factors, the results show that a large helix angle, results is smaller specific coefficients; the bigger rake angle, the smaller specific coefficients. The clearance angle has less effect on specific coefficient. In different cutting speed experiments, on using Al 6061 and SUS 304, the results of experiment show specific coefficients decrease with increase cutting speed, on the contrast, the specific coefficients of Inconel 718 increase with cutting speed.

論文目次 中文摘要----------------------------------------I
英文摘要---------------------------------------II
致謝------------------------------------------III
總目錄-----------------------------------------IV
表目錄----------------------------------------VII
圖目錄---------------------------------------VIII
符號說明----------------------------------------X
第一章 緒論----------------------------------1
1.1前言-----------------------------------------1
1.2文獻回顧-------------------------------------3
1.3研究範疇及論文架-----------------------------5
第二章 端銑刀之銑削力模式-----------------------7
2.1前言-----------------------------------------7
2.2銑刀座標系統---------------------------------7
2.3 包含剪切、犁切局部側銑模式-----------------10
2.3.1 LGCC局部銑削力模式-----------------------12
2.3.2 DGCC局部銑削力模式-----------------------13
2.4 單刃側銑總銑削力---------------------------15
2.4.1 屑寬密度函數-----------------------------15
2.4.2 刀刃序列函數-----------------------------16
2.5 總銑削力-----------------------------------17
第三章 比切削係數之辨識------------------------18
3.1前言----------------------------------------18
3.2比切削係數的辨識方法------------------------18
3.3 比較各種辨識切削常數方法辨識結果-----------19
第四章 切削條件對Al 6061-T651比切削係數的影響實驗---------------------------------------------27
4.1前言----------------------------------------27
4.2比較LGCC與DGCC的應用結果優缺點比較----------27
4.3 不同切速下比切削係數的變化探討-------------32
4.4 比較順逆銑的切削係數的差異-----------------41
第五章 SUS303及Inconel 718的比切削係數實驗-----44
5.1前言----------------------------------------44
5.2 SUS 304不同切速下比切削係數的變化----------45
5.3 刀具幾何對比切削係數的影響-----------------48
5.3.1 不同螺旋角銑刀其比切削係數的差異---------49
5.3.2 不同斜角銑刀其比切削係數的差異-----------51
5.3.3 不同隙角銑刀其比切削係數的差異-----------52
5.4 比較側銑與槽銑辨識的切削係數差異-----------53
5.5 Inconel 718的比切削係數實驗----------------60
第六章 結論與建議------------------------------63
6.1 結論---------------------------------------63
6.2建議----------------------------------------65
參考文獻---------------------------------------67
自述-------------------------------------------69
參考文獻 [1]M. E. Martellotti, “An Analysis of the Milling Process,”
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[17]D. Dudzinski, A.Molinari, and H. Schulz, “Metal Cutting And Hight Speed Machining,“ Kluwer Academic/Plenum Publishers, New York, pp.191~200, 2001
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