- 期刊
Analysis of Burr Height in Ultrasonic-Assisted Drilling of Ti-6Al-4V Alloy
超音波輔助鑽削Ti-6Al-4V合金毛邊高度之分析
摘要
本研究旨在處理麻花鑚超音波輔助鑚削參數之強健設計，對鑚削Ti-6Al-4V合金毛邊高度的分析。利用田口方法與正交陣列，可確認不同鑚削因子間之最佳化組合。實驗結果顯示，超音波輔助鑚削Ti-6Al-4V合金之最佳化條件為有頻率追蹤、400 V的工作電壓、2.5 mm的鑽頭直徑、20 mm/min的進給速率與700 rpm的主軸轉速。在五個可控因子當中，以鑽頭直徑、進給速率與頻率追蹤是影響超音波輔助鑚削Ti-6Al-4V合金毛邊高度最重要的因子。此外，頻率追蹤提供在可變條件之下，自調鑚削系統以達保持共振模式振動的可能性。同時，涵蓋研究與應用的LabVIEW軟體，具有提供頻率追蹤之控制與監測的特點。此特點對超音波輔助鑚削所獲致的結果，具有極其之重要性。
關鍵字
無資料並列摘要
In this study, the robust design of ultrasonic-assisted drilling (UAD) parameters for twist drills deals with the burr height in drilling Ti-6Al-4V alloy. The optimum combinations between the various drilling factors can be identified using Taguchi methods and orthogonal array. Experimental results show the optimum conditions were the frequency tracing of ON, operating voltage of 400V, drill diameter of 2.5 mm, feed rate of 20 mm/min and spindle speed of 700 rpm. The drill diameter, feed rate and frequency tracing are the most significant factors among the five controllable factors affecting the burr height in UAD of Ti-6Al-4V alloy. The frequency tracing provides the possibility of self-tuning the drilling system to keep the resonant mode of oscillations under variable conditions. The LabVIEW software provides features for control and monitoring of the frequency tracing operation, which cover the essential needs of research and application. This feature is vital for obtaining consistent results during UAD.