新型国产T800碳纤维复合材料制孔特性  

Hole making characteristics of novel domestic T800 carbon fiber reinforced composite

作　　者：董慧民 王赫 孟繁星 耿大喜 李跃腾 钱黄海 苏正涛 DONG Huimin;WANG He;MENG Fanxing;GENG Daxi;LI Yueteng;QIAN Huanghai;SU Zhengtao(Aviation Key Laboratory of Science and Technology on Materials and Application Research for Vibration and Noise Reduction,AECC Beijing Institute of Aeronautical Materials,Beijing 100095,China;School of Mechanical Engineering and Automation,Beihang University,Beijing 100191,China)

机构地区：[1]中国航发北京航空材料研究院减振降噪材料及应用技术航空科技重点实验室,北京100095 [2]北京航空航天大学机械工程及自动化学院,北京100191

出　　处：《航空材料学报》2023年第3期94-104,共11页Journal of Aeronautical Materials

摘　　要：针对新型国产T800复合材料(carbon fiber reinforced plastic, CFRP)在切削过程中因钻削力及扭矩较大易产生的分层撕裂、纤维损失等缺陷问题,搭建包含立式超声加工中心和测力系统的实验平台,采用硬质合金麻花钻、三尖钻、匕首钻对T800碳纤维复合材料进行制孔质量对比实验。在相同的工艺参数下,对比了三种刀具结构在普通钻削(conventional drilling, CD)下对T800复合材料制孔的切削力、孔出入口表面形貌、孔径偏差及孔表面粗糙度的影响规律。在优选刀具结构的基础上,采用超声振动辅助钻削(ultrasonic vibration assisted drilling, UVAD)方法开展可行性实验。结果表明:硬质合金匕首钻可以有效地抑制T800复合材料制孔时的表面缺陷,然而入口孔径精度较差;超声振动辅助匕首钻可以进一步提升制孔质量,特别是通过提高入钻稳定性显著改善孔径精度。In view of the defects of the new domestic T800 carbon fiber reinforced plastic(CFRP),such as lamellar tearing and fiber loss,which would be easily caused by large drilling force and torque during cutting,an experimental platform including a vertical ultrasonic machining center and force measurement system was constructed.Carbide twist drill,carbide candle stick drill and carbide dagger drill were used to compare the hole quality of T800 carbon fiber composite.Under the same technological parameters,the influences of three kinds of cutting tool structures on the cutting force,surface morphology of hole inlet and outlet,aperture deviation and surface roughness of T800 composite were compared with those of conventional drilling(CD).The ultrasonic vibration assisted drilling(UVAD)method was adopted to carry out feasibility experiments on optimum tool structure.The results show that the carbide dagger drill can effectively suppress the surface defects of T800 composite materials,but the entrance aperture accuracy is poor.The ultrasonic vibration assisted dagger drilling can further improve the quality of hole making,especially significantly improve the aperture accuracy by improving the drilling stability.

关 键 词：T800 复合材料 超声振动钻削 匕首钻 加工精度 

分 类 号：V262[航空宇航科学与技术—航空宇航制造工程] V258.3[一般工业技术—材料科学与工程]