摘要
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。
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.
出处
《航空制造技术》
2015年第10期90-93,97,共5页
Aeronautical Manufacturing Technology
基金
国家自然科学基金项目(51475298)
上海交通大学士后研究基金项目(14X100030001)
中国博士后基金项目(2014M560331资助
