在切削加工領域中，切削液的使用是普遍的現象；同時也帶來許多負面的影響如增加生產成本、環境危害與影響身體健康等。使用傳統切削 (conventional cutting，CC) 是個好的替代方式，但無法擁有切削液的優點。而振動輔助切削 (vibration assisted cutting，VAC) 則結合了上述兩種切削加工方法的優點。因此本研究以微型鑽石研磨棒振動輔助磨削 (vibration assisted grinding，VAG) 加工SKD61工具鋼為研究方向。討論各種參數下工件表面精度、刀具磨耗並與傳統切削比較。並在振動輔助切削上添加微量潤滑，探討微量潤滑之振動輔助切削的影響。
實驗結果顯示，VAG在1.92 μm/rev低進給有較好的效果，其Ra值達到0.05 μm，具有似鏡面效果。在25000 rpm、進給5.76 μm/rev下會產生chatter，使表面粗糙度Ra值不佳。對轉速的提升，VAG並無太多優勢，只在中轉速25000 rpm才有較明顯的效果。在磨耗上則是VAG較傳統切削為佳，但隨轉速提升抗磨耗能力會快速降低。若在VAG上加入微量潤滑 (MQL)，則刀具壽命可延長至少1.5倍，但工件表面粗糙度會較VAG略為上升。改變VAG振動條件其影響也不同：結果顯示，在振動頻率9 kHz下，振幅越大其表面粗糙度越佳。

Cutting fluids have some drawbacks, like health hazards, extra manufacturing cost and environmental contamination. To decrease the disadvantages of using cutting fluids, conventional cutting is a better choice. However, conventional cutting has no advantages of using cutting fluids, such as lubrication. Therefore, vibration assisted cutting (VAC) is a new technology to achieve both purposes of the above machining techniques. Hence, the goal of this study focuses on the mechanical performance of vibration assisted grinding (VAG) for micro grinding of SKD61 steel based on tool life and surface finish.
In this study, it is observed that chatter happens under VAG in the condition of feed 5.76 μm/rev. Surface roughness (Ra) for the condition of feed 1.92 μm/rev is better than that of 5.76 μm/rev. The best surface finish is 0.05 μm in this study when the feed is 1.92 μm/rev. Spindle speed does not have significant effect on surface roughness in this study. However, the tool life is short under high spindle speed (35000rpm). Experimental results show that tool life will be prolonged two-thirds for VAG combined with MQL. As changing the amplitude of vibration (for a fixed frequency of 9 kHz) , the larger the amplitude, the better the surface roughness.

謝誌 i
目錄 ii
圖目錄 iv
表目錄 vi
摘要 vii
Abstract viii
第一章 緒論 1
1.1 研究背景與動機 1
1.2 研究目的 2
1.3 論文架構 3
第二章 文獻探討 4
2.1 超音波振動輔助切削之基本機制 4
2.2 文獻回顧 7
第三章 實驗配置與方法 13
3.1 實驗配置 13
3.2 實驗方法 19
第四章 實驗結果與討論 25
4.1 傳統切削與振動輔助切削對表面精度的影響 25
4.1.1 傳統切削與振動輔助切削在不同進給下對於表面精度之差異 25
4.1.2 傳統切削與振動輔助切削在不同橫向進給下之影響 29
4.1.3 傳統切削與振動輔助切削在不同轉速下之表面精度變化 32
4.2 傳統切削與振動輔助切削對刀具磨耗之影響 36
4.3 振動輔助切削加入MQL對於刀具磨耗的影響 45
4.4 改變振動輔助切削之振動條件對於表面精度的變化 47
第五章 結論 52
參考文獻 54
附錄：實驗設備 58

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