本文主要在探討微銑削的方法下，刀具幾何與每刃進给對比切削係數及加工面品質之影響。比切削係數的辨識是以銑削捲積力模式之解析式為基礎代入加工條件及實驗所得的平均銑削力來達成。
本文選用玻璃(Soda-lime) 及鋁(Al6061-T6)作為實驗材料，
觀察在不同平均切屑厚度之順、逆銑加工中，比切削係數的變化趨勢。實驗結果發現，玻璃與鋁，順、逆銑時，剪切力之切向比切削係數 與剪切力之徑向比切削係數 隨平均切屑厚度變小有上升的趨勢，犁切力之切向比切削係數 與犁切力之徑向比切削係數 隨平均切屑厚度變小差異不大。玻璃在順、逆銑時，若將總切向銑削力分為剪切力之切向力與犁切力之切向力，發現銑削玻璃時，犁切力之切向力約佔總切向銑削力80%、剪切力之切向力佔總切向銑削力20%，而加工延性材料鋁則發現，犁切力之切向力約佔總切向銑削力50%、剪切力之切向力佔總切向銑削力50%。玻璃順銑時，加工後的延性表面粗糙度值Ra為2~8 nm、臨界切深為52 nm。

This thesis investigates the effect of tool geometry and feed per tooth respectively on cutting coefficients and surface quality in mirco milling . Based on the analytical nature of convolution milling force model, the cutting coefficients can be identified by substituting the milling conditions and the average milling force into the force model.
The experiments were performed with soda-lime glass and Al6061-T6 to observe the effects of average chip thickness to the cutting constants during up and down milling operation. The results show that tangential cutting coefficient for the shearing and radial cutting coefficient for the shearing rise with decrease average chip thickness . The tangential cutting coefficient for the plowing and radial cutting coefficient for the plowing are still constant with differential average chip thickness.
The tangential force for the plowing is 0.8 times the cutting force in tangential direction and the tangential force for the shearing is 0.2 times the cutting force in tangential direction between up and down milling in soda-lime glass.Furthermore, the tangential force for the plowing is 0.5 times the cutting force and the tangential force for the shearing is 0.5 times the cutting force in tangential between up and down milling in Al6061-T6.The surface roughness is within 2~8 nm and the critical depth of cut (C.D.C) is 52 nm in soda-lime glass.

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