CAJ | 학술논문

对PTFE/CFRP/铝合金叠层材料进行了钻削试验研究。结果表明：最高钻削温度随主轴转速的增大而增大，但随进给量的增大反而下降；相同钻削参数下，从铝合金侧钻入能获得更低的钻削温度；采用较大的进给量有利于铝合金形成碎屑状切屑，避免带状切屑排出时划伤已加工CFRP表面；采用较低主轴转速和较大的进给量可获得更好的铝合金孔出口质量。
대PTFE/CFRP/려합금첩층재료진행료찬삭시험연구。결과표명：최고찬삭온도수주축전속적증대이증대，단수진급량적증대반이하강；상동찬삭삼수하，종려합금측찬입능획득경저적찬삭온도；채용교대적진급량유리우려합금형성쇄설상절설，피면대상절설배출시화상이가공CFRP표면；채용교저주축전속화교대적진급량가획득경호적려합금공출구질량。
An experimental study on drilling a stack made of PTFE/CFRP/aluminum is investigated in terms of drilling forces, cutting temperatures, chip mor-phology and push-out hole quality. The results reveal that drilling temperature increases when the spindle speed is elevated while decreases as the feed rate increases. Under the same drilling condition, lower drilling temperature can be obtained while the drilling sequence starting from the aluminum layer. High feed rate is observed to facilitate the formation of segmented chips, which can reduce the sur-face damage of the composite hole during the chip removal process. Besides, when the drilling operation is performed under the cutting condition of low spindle speed and high feed rate, better push-out quality of aluminum layer will be obtained.