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論文名稱(中文) 高壓氣冷與超音波潤滑對模具鋼銑削特性影響之研究
論文名稱(英文) The effects of high pressure air cooling and ultrasonic lubrication on the milling characteristics of tool steels
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 98
學期 2
出版年 99
研究生(中文) 王偉倫
研究生(英文) Wei-Lun Wang
學號 n1695163
學位類別 碩士
語文別 中文
論文頁數 61頁
口試委員 指導教授-王俊志
口試委員-李偉賢
口試委員-林昌進
中文關鍵字 高壓氣冷  超音波潤滑  潤滑方式  比切削係數 
英文關鍵字 high-pressure air cooling  ultrasonic lubrication  lubrication method  cutting coefficients 
學科別分類
中文摘要 本文主要探討高壓氣冷與超音波潤條件下銑削SKD11(HRc60)以及SKD61(HRc40)模具鋼,觀察不同潤滑條件對加工後工件表面粗糙度與刀具磨耗的影響,並分析切削力與比切削係數的差異。實驗結果再與乾切削實驗作詳細的結果比較。
在SKD11的實驗結果中,當徑向切深小,超音波潤滑的條件下,工件表面粗糙度及刀具磨耗的結果為最佳,其次為高壓氣冷,最差的是乾切削;隨著徑向切深加大,超音波潤滑及高壓氣冷可以有效地降低刀腹與工件之間的犁切效應,增加刀具壽命。SKD61的實驗中,同樣發現超音波潤滑與高壓氣冷可以降低刀腹與工件間的犁切力量。
比切削係數的分析結果發現,高壓空氣冷卻與超音波潤滑皆能有效降低刀具犁切效應,尤其以超音波潤滑的效果最為明顯;而此兩種潤滑方式都能進一步改善刀具壽命,提升加工表面品質。
SKD11(HRc60)實驗中,透過切屑顏色與溫度的關係來看,乾切削實驗的溫度最高,高壓氣冷次之,超音波潤滑對於降低切削溫度的效果最明顯。
英文摘要 This thesis discussed surface roughness and tool wear in milling tool steel material with different cutting fluid supply conditions. SKD11(HRc60) and SKD61(HRc40) were milled on the condition of high pressure air cooling and ultrasonic lubrication. The milling force was analyzed to
identify both the cutting coefficients of shearing and plowing effects individually.
The experiment results showed that less tool wear and better roughness of milling surface can be found on the condition of ultrasonic lubrication and less radial cutting depth. Even on the condition of higher radial cutting depth, the influences of the ultrasonic lubrication to the milling performance were superior to that of the high pressure air cooling.According to the cutting coefficients identified from the milling force, the plowing coefficient in tangential direction mostly reduced while supplying the ultrasonic lubricant. Moreover, the ultrasonic lubrication can suppress the rapid growth of milling temperature more efficiently than the high pressure air cooling when cutting load was increased in milling the high hardness tool steel.
論文目次 中文摘要I
英文摘要II
誌謝III
總目錄IV
圖目錄VII
表目錄XI
符號說明XII
第一章 緒論1
1.1研究動機1
1.2文獻回顧2
1.2.1銑削力模式文獻回顧2
1.2.2潤滑條件對各種切削條件影響之相關文獻4
1.2.3模具鋼加工技術相關文獻5
1.3研究範疇及論文架構6
第二章 端銑刀之銑削力模式8
2.1切削常數的物理意義8
2.2銑刀座標系統8
2.3包含剪切、犁切局部側銑模式11
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14
2.4.1 屑寬密度函數15
2.4.2 刀刃序列函數16
2.4.3 總銑削力16
2.4.4 比切削係數的辨識方法17
第三章 實驗設備與規劃19
3.1前言19
3.2實驗設備19
3.3實驗規劃21
第四章 潤滑條件對比切削係數的影響29
4.1潤滑條件對比切削係數的影響29
4.1.1比切削係數正確性的驗證29
4.1.2潤滑條件對比切削係數Kts與Ktp的影響31
第五章 潤滑條件對刀具磨耗及表面粗糙度之影響40
5.1 表面粗糙度量測40
5.2 表面粗糙度量測結果40
5.3 刀具磨耗的量測44
5.4 SKD11(HRc60)切屑顏色探討50
第六章 結論與建議55
6.1結論55
6.2建議56
參考文獻57
自述61
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