本文針對脈衝與連續波兩種不同雷射輔助方式對不同硬度之模具鋼加工進行探討。由文獻得知相關研究多僅使用連續波雷射為輔助熱源，未有同時比較脈衝與連續波雷射輔助加工之差異，本研究針對此方向進行深入探討。由雷射輔助切削硬化模具鋼之磨耗實驗中可得出連續波雷射輔助加工時降低刀腹磨耗效果較脈衝雷射輔助加工為佳，因脈衝雷射高集中能量之特性會將材料汽化而加速能量散失。本文利用銑削力模式建立切向犁切比切削常數與刀腹磨耗值之關係，並進一步求得比磨耗能以利往後銑削磨耗之預測。本論文於刀腹磨耗實驗中比較有無雷射輔助加工之效應，結果發現在相同磨耗值下，由於工件受熱軟化增加犁切效應，所以雷射輔助銑削之切向犁切比切削常數會高於無雷射輔助銑削。最後進行工件表面觀察，發現雷射輔助銑削硬化模具鋼可有效改善工件毛邊情形，但加工未硬化模具鋼卻成相反趨勢。

The main objective of this work was to compare the results of processing hardened　and unhardened tool steel with two kinds of laser assistant method, pulsed laser and continuous wave laser. In the past literature, most research about laser assisted machining only using continuous wave laser, none of them compare impulse an continuous wave laser in the same time, this thesis study in the topic. The result of the wearing experiment obtained that continuous wave laser assistant is the best reducing flank wear, and impulse laser makes is the next best. Next, Ktp of processing hardened tool steel was determined in milling force model, and combined with the measured flank wear value to obtain the specific wearing energy. Compared with the effect reduce flank wearing, under the situation of the same wearing value, because the plowing effect increases due to the softening of heated work piece, the Ktp of milling with laser assistant is higher than that without laser assistant. Otherwise, by observing of the processed work piece, laser assistant milling makes the burr and the roughness of processed unhardened tool steel worse, but improves those properties of hardened tool steel.

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張煌權，包含側邊及底面犁切力之端銑及面銑力模式，國立成功大學機械研究所，九十年碩士論文

鄭茗元，SKD61硬化模具鋼銑削特性之探討，國立成功大學機械研究所，九十年碩士論文

郭晉瑋，微量潤滑對刀腹磨耗及銑削穩定性之影響，國立成功大學機械研究所，一百年碩士論文