工學院: 機械工程學研究所指導教授: 廖運炫許鐘元Hsu, Chung-YuanChung-YuanHsu2017-03-132018-06-282017-03-132018-06-282016http://ntur.lib.ntu.edu.tw//handle/246246/278443印刷電路板(Printed circuit board)在日常生活中極為常見，然而因應近年的環保法規，使其有著因加入無機填充劑造成剛性提升難加工、刀具磨耗上升使產品尺寸提早超過管制線、還有因加工時粉塵堆積不利於後續製程等問題。 為了改善上述中粉塵之堆積問題，本研究主要在探討複合材料加工時刀具磨耗及切屑形態，並找出關聯性，以改進積粉現象。首先分析粉塵的產生因素，進而去抑制並改善積粉。透過實驗顯示，粉塵的產生與初期便具有的複合材料特性與加工參數等切削條件，以及隨著加工進行產生的刀具磨耗有關。 由上述討論的兩個層面來看，一個是材料特性與加工條件，這個部分由於產品的特性條件隨著原料及不同廠商提供的差異會有所影響並難以控制故不加以討論；另一個則是刀具的磨耗，這是在切削上可以進行實驗並改善之部分。 針對刀具磨耗之問題，本實驗採用的鍍層為類鑽碳，取其優異的耐磨性，低磨擦係數及低表面沾黏性。由實驗得知，在切削5個panel的電路板後，更換適合的鍍層可以比原本的ZrN鍍層之結果改善約26%的粉塵堆積情況。 本實驗亦設計一遮罩裝置於刀具外側，於切削時加以高壓空氣輔助排屑。實驗結果顯示，透過此裝置，能有效改善刀具磨耗及粉塵堆積，在切削5個panel後，有吹氣裝置能比原始狀況改善約44%之積粉情形。若將吹氣改為吸氣，其較原始狀況則能改善27%。 最後，將鍍層以及吹氣遮罩做結合進行測試，在切削5個panel後，選用適合的鍍層，其積粉比起原始狀況改善了約56%的程。 依據本實驗的預測，更換適當的類鑽碳鍍層並同時用遮罩加以吹氣進行加工，可將原本35米的加工上限提高至約130米。Printed circuit board is very common in everyday life. However, in response to environmental regulations in recent years, there are problems such like difficult machining due to the addition of inorganic fillers to enhance the rigidity, tool wear increasing caused the size of the product earlier exceeded the control limit, and the powder accumulation during machining is harmful to the subsequent process. In order to improve the above problems of powder accumulation, this research focus on the tool wear and chip forms in the composite material machining, and find the relevance to improve powder accumulation. Firstly, analyze the factors of powder formation, and then to suppress and to improve it. Through machining experiments, it show that the composite material properties, machining parameters, and tool wear during machining have relevance with powder accumulation. Talking about the two levels discussed above, one is the material properties and processing conditions, which is difficult to control and it is not discussed due to the difference of characteristics of the product with the difference of materials and different firms; the other is tool wear, which is possible to experiment on and to improve. About the problem of tool wear, the coating which has been chosen is diamond-like carbon, which has excellent wear resistance, low friction coefficient and less adhesion on the surface. After cutting 5 panels, the experiment result shows that the replacement for the coating can improve the accumulation of powder on about 26 percent than the original ZrN result of coating. This research also use a designed mask to cover the tool, and supply the high-pressure air in order to raise the removal rate of cutting chips. Experimental results show that using this device can effectively improve the tool wear and dust accumulation. After cutting 5 panels, using the mask with blowing can improve the accumulation of powder on about 44 percent than the original condition. If the blowing change into inhale, it is able to improve the situation on about 27 percent than the original condition. In the test of the usage of air mask with blowing and changing of coating, after cutting 5 panels, choose a suitable coating can improve the accumulation of powder on about 56 percent than the original condition. According to the prediction of the experiment, the replacement of the diamond-like carbon coating and the usage of air mask with blowing may be processing the original 35 meters to raise the ceiling to about 130 meters.論文使用權限: 不同意授權印刷電路板無鹵素玻璃纖維複合材料銑削磨削磨耗切屑類鑽碳吹氣裝置printed circuit boardhalogen freeglass fiber reinforced plasticmillingabrasive wearchipdiamond-like carbonblowing devicethesis10.6342/NTU201600381