國外對於刀具微幾何研究已經有相當一段時間，但是台灣對於刀具微幾何的研究卻屈指可數，同時鈍化技術涉及刀具製造商的技術機密，因此國內可查詢的技術資料近乎沒有，原因在於，微幾何的加工過程可以透過自動化鈍化處理，該製程成本僅佔整把刀具的一小部分，卻能夠大幅增加刀具壽命與刃口穩定性，以避免過早出現刃口崩損，由此可見鈍化對切削性能的影響至關重要。
本篇研究之刀具在固定的切削條件下，透過不同的巨觀幾何角度(切削角、離隙角)、微觀的倒角角度(30°、45°、60°、75°)與不同的圓角尺寸來增加刀具切削距離且保持刃口不崩損，以提供穩定的未鈍化刀具作為不同種類的鍍層測試之用，再從鍍層測試中挑出最佳的鍍層種類作優化並與國外刀具做比較。
從1.不同圓角大小的實驗中得知，圓角尺寸對於刃口穩定性有至關重要的影響。2.從鍍層測試的實驗中得知，刀面、刀腹的鍍層減緩刀面凹陷磨損與刀腹磨耗對於微幾何形狀的影響。3.從市售刀具比較的實驗得知，不同碳化鎢棒材的鈷含量、粒徑會影響耐衝擊強度，耐衝擊強度越高，棒材韌性越佳，相當於刀尖處越不會崩損，因此，衝擊強度會決定刃口微幾何的最終尺寸，刀尖點會隨著加工距離增加，使粉末冶金製成的碳化鎢棒材慢慢出現微小的崩離，進而增加圓角尺寸，只要微幾何尺寸隨著切削距離增長的速度約略等同刀腹磨耗降低微幾何圓角尺寸的速度，即可達到長距離切削同時保持刃口完整，刃口保持在適當的微幾何尺寸可以改善毛邊高度、擠壓型切屑。
實驗使用的棒材(TF25+)在沒有鍍層的前提下，僅能透過增加微幾何尺寸提高刃口穩定性，但是加工時候的主軸負載、毛邊高度、擠壓型切屑也會隨之增加，初期刀腹磨耗會顯著影響微幾何的高度，進而降低微幾何尺寸，此速度快於碳化鎢棒材隨加工距離增加造成刀尖自然崩離使微幾何尺寸增加的速度，因此在已知第一離隙角的條件下，可以預期刀腹磨耗達到某一值的時候，刀尖會因為過尖而導致明顯的崩刃。本研究希望透過實驗結果能夠提供一些建議給有需要的人，作為刀具設計時的參考之用，減少設計刀具時花費的時間。

verseas research on cutting tool microgeometry has been discussed for quite some time, but there are only a handful of researches on tool microgeometry. At the same time, the edge preparation involves the secrets of the tool manufacturers techniques, hence there is rarely any technical information available in Taiwan. The reason for this phenomenon is because the process of micro-geometry can be processed through automatic machinery process procedures. It costs very little in the entire tool making process, but it can greatly increase the tool life and cutting edge stability to avoid unexpected broken that is because of the edge chipping. It can be seen that edge preparation technology has an important impact on the cutting tools performance.
Under the same cutting conditions, in testing of the cutting tools with: A-different macroscopic-geometric angles(cutting angle, relief angle), B-microscopic-geometric chamfer with 30 degrees, 45 degrees, 60 degrees, 75 degrees, and C-different size of the honed tools in order to maintain no broken chip on the cutting edge for a long time and to increase the cutting distance of the tool as much as possible under the great level of surface roughness in this paper, so as to provide a stable tool for coating testing, and then compare the tool life with Sandvik cutting tool.
It has also been observed from the experiments that the coating also has a crucial impact on the edge stability. The micro-geometry of the cutting edge is not changed, comparing with the micro-geometric measurement results before and after the coating. Therefore, the coating on the tool face and flank can significant reduce the deformation of the microgeometry size due to the crater and flank wear, whereas the micro-geometry of the uncoated cutting tool tip, which is made of tungsten carbide powder metallurgy will slowly fall into very small pieces with increasing processing distance, as a result, to maintain the edge radius size, as long as the edge radius size increases with the cutting distance at a speed approximately equal to the speed which the flank wear reduces the edge radius size. that is to say, It can achieve long-distance cutting and still keep the cutting edge intact
As a result of experience, The cutting tool(TF25+) can increase the cutting edge stability only by increasing edge radius size, but the spindle load, burr height, and compressed chips increase in the same time. The flank wear will gradually decrease the height of the edge radius size, which is faster than the speed that the tungsten carbide gradually fall into pieces with the increase of the machining distance, which increases the edge radius. Under the condition of the cutting tool with the first relief angle, it can be expected that when the flank wear reaches a certain value, the edge of the cutting tool will be broken.
It is hoped that through the results of this experiment, the suggestions can be provided to those in need, which can be used as a reference for tool design.

摘要..i
Abstract..ii
誌謝..iv
目錄..v
表目錄..viii
圖目錄..ix
符號說明..xiii
第一章 緒論..1
1.1 研究動機與目..1
1.2 文獻回顧..2
1.3 研究流程..5
1.4 論文大綱..8
第二章 理論基礎..9
2.1 刀具切削理論..9
2.1.1 剪切綜合效應切削力常數模式(LGCC)..9
8.1.1 剪切及犁切雙效應切削力常數模式(DGCC)..14
2.1.2 切削厚度..16
2.2 端銑刀具幾何..16
2.2.1 刀刃數..17
2.2.2 主偏角..18
2.2.3 螺旋角..18
2.2.4 直角、圓鼻端銑刀幾何與角度..19
2.2.5 圓鼻端銑刀幾何與角度..24
2.2.6 速度向、法向幾何角度..26
2.3 微幾何量測..28
2.4 端銑刀具補正..34
2.4.1 徑向第一離隙..34
2.4.2 軸向第一離隙角..35
2.4.3 軸向第二離隙角..35
2.4.4 開槽..36
第三章 實驗設備與軟體程式開發工具..38
3.1 Surfcorder SEF-3500表面粗糙度測定器..38
3.2 Zoller genius3刀具量測儀..38
3.3 TD-5砂輪修整機..39
3.4 TOP TG-5 PLUS工具磨床..40
3.5 Walter五軸刀具研磨機..41
3.6 KEEJAAN KJ-202 刀具量測儀..42
3.7 TAKUMI B8三軸工具機..43
3.8 Olympus STM 6高精度工具顯微鏡..43
3.9 Haimer TD-99動平衡機..44
3.10 Zoller pomSkpGo刀尖鈍化量測儀..45
3.11 EDSING POLL TECH PT-G4鈍化機..45
第四章 實驗規劃..47
4.1 巨觀幾何角度實驗..47
4.2 巨觀幾何角度實驗規劃..47
4.3 微觀幾何實驗..48
4.3.1 刃口倒角..48
4.3.2 刃口圓角..50
4.4 微觀幾何實驗規劃..51
4.4.1 不同倒角角度的比較..51
4.4.2 不同圓角大小的比較..51
4.4.3 圓邊對於微幾何變形速率的影響..52
4.4.4 圓邊對於表面粗糙度的影響..52
4.5 鍍層測試規劃..53
4.6 市售刀具比較規劃..53
第五章 實驗結果與討論..54
5.1 刃口倒角微幾何的實驗結果..54
5.2 不同圓角大小的比較..60
5.3 圓邊對於微幾何變形速率的影響..64
5.4 圓邊對於表面粗糙度的影響..69
5.4.1 圓邊對於進給方向表面粗糙度影響..69
5.4.2 圓邊對於軸向方向表面粗糙度的影響..70
5.5 鍍層對刀具的影響..73
5.6 市售刀具之比較..76
第六章 結論與未來展望..88
6.1 結論..88
6.2 未來展望..88
參 考 文 獻..89
附件A-碳化鎢棒材性質..91
Abstract..92
1. Introduction..94
2. The effect of different edge radius sizes..94
3. The effect of coating on micro-geometry..95
4.Discussion and Conclusions..96
References..97

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