鋁合金6061-T6通訊元件微攻牙扭矩測試

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Title:	鋁合金6061-T6通訊元件微攻牙扭矩測試 The Measurement of Torque for Micro Tapping of Aluminum Alloy 6061-T6
Authors:	楊祖航
Contributors:	機械工程學系數位機電碩士班
Keywords:	鋁合金6061-T6 通訊元件微攻牙積屑 BUE Aluminium alloy 6061-T6 Communication components Micro taps Build-up edge BUE
Date:	2022
Issue Date:	2023-03-03 15:09:28 (UTC+8)
Abstract:	通訊元件常以鋁合金6061-T6製作完成，其中必須鎖螺絲之機率很高，因此鑽孔攻牙為必要之加工程序；尤其是攻牙加工相當困擾，因鋁合金6061-T6為難切削之材料，若要切削精良，鋁合金6061-T6切削速度甚至超過每分鐘1000米以上。這種切削狀況在攻牙加工是不可能存在的。攻牙加工都是慢速切削，積屑狀況必然會產生。本研究之重點就是達到減少攻牙扭矩與延遲積屑(Built-up edge)之形成時間。本研究先以1.乾切削 2.機油 3.底盤潤滑脂當切削液作先導性探討。經過文獻探討、研究架構與設計，以及進行實驗，之後得到研究結果有，感測器誤差比較值、乾切削扭矩數值及切削油當切削液扭矩數值作先導性探討其效果是否如預期一般，能夠減少BUE產生，降低攻牙時間及提高加工精度。最後得到研究結論有：1. 固定轉速200rpm攻牙M3，切削鋁合金6061-T6，測量平均最大扭矩為：(1) 乾切削 0.18 N-m (2) 機油 0.11 N-m (3) 底盤潤滑脂0.1N-m 。2. 經過實驗後得知乾切削的情況下扭矩過大，較不適合用在攻牙上。3. 底盤潤滑脂較切削油更適合作為攻牙時的切削液，因其攻牙時間較短且後段的振盪幅度相對較小。4. 鑽孔之真圓度與粗糙度，也是對於BUE產生之重要因素。 Communication components are often made of Aluminium alloy 6061-T6, where the probability of having to lock screws is high, so drilling and tapping are necessary machining procedures. Especially the tooth-tapping machining is quite troublesome, because aluminum alloy 6061-T6 is a difficult material to cut. To cut it well, the cutting speed would alloy even exceeds 1000 meters per minute. This cutting condition is not possible in tapping. Tapping machining is slow generally, the accumulation condition will inevitably produce. The focus of this study is to achieve the reduction of tapping torque and the formation time of the Build-up edge. This study starts with 1. Dry Cut 2. Oil 3. The chassis lubricating grease is used as the cutting fluid as the lead. After literature discussion, research structure and design, and experiment, the results are as follows: sensor error comparison value, dry cutting torque value and cutting oil torque value as a precursor. Finally, the conclusion of the study is: 1. Fixed speed 200 rpm tapping M3, cutting aluminum alloy 6061-T6, measuring average maximum torque is: (1) dry cut 0.18 N-m (2) oil 0.11 N-m (3) chassis grease 0.1N-m. 2. After the experiment, it is known that the torque is too large for dry cutting, which is less suitable for tooth tapping. 3. Chassis grease is more suitable as cutting fluid for tapping because of its shorter tapping time and smaller oscillation amplitude in the back section. 4. The true roundness and roughness of drilling are also important factors for BUE generation.
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