高低频复合振动钻削CFRP/钛合金叠层结构试验  

Experiment on high and low frequency compound vibration-assisted drilling of CFRP/titanium alloy laminated structure

作　　者：李远霄 焦锋[1] 张世杰 张顺 王雪 童景琳[1] LI Yuanxiao;JIAO Feng;ZHANG Shijie;ZHANG Shun;WANG Xue;TONG Jinglin(School of Mechanical and Power Engineering,Henan Polytechnic University,Jiaozuo 454000,China)

机构地区：[1]河南理工大学机械与动力工程学院,焦作454000

出　　处：《航空学报》2021年第10期337-350,共14页Acta Aeronautica et Astronautica Sinica

基　　金：国家自然科学基金(51675164)。

摘　　要：针对碳纤维增强复合材料(CFRP)和钛合金叠层结构在传统钻削过程中切削温度高、加工质量差等问题,基于低频振动钻削和高频(超声)振动钻削的优势,提出了高低频复合振动钻削的加工方法。采用自主研制的高低频复合振动钻削装置,对CFRP/钛合金叠层结构进行了制孔试验,对比研究了普通钻削、超声钻削、低频振动钻削和高低频复合振动钻削4种方式下的切削力、钛合金切屑形貌、切削温度和CFRP孔加工质量。结果表明:4种加工方式中,高低频复合振动钻削的轴向力波动相对较大,切削温度显著降低,产生的钛合金切屑呈不连续扇形且整体尺寸最小,CFRP孔出入口及孔壁的损伤程度最低,显著提高了加工质量,为复合材料叠层结构一体化制孔加工提供了指导意义。To overcome the problems of high cutting temperature and poor machining quality in the traditional drilling process of Carbon Fiber Reinforced Plastic(CFRP)and titanium alloy laminated structure,this paper proposes a processing method of high and low frequency compound vibration-assisted drilling of CFRP/titanium alloy laminated structure-assisted drilling based on the respective advantages of these two drilling methods.The self-developed high and low frequency compound vibration-assisted drilling device is used to carry out the drilling experiment of CFRP/titanium alloy laminated structure.The cutting force,titanium alloy chip morphology,cutting temperature and the hole processing quality of CFRP in four drilling modes(conventional drilling,ultrasonic vibration drilling,low frequency vibration drilling,and high and low frequency compound vibration-assisted drilling)are compared.The results show that among the four processing methods,in the high and low frequency compound vibration-assisted drilling,the thrust force fluctuation is relatively large,the cutting temperature is significantly reduced,the titanium alloy chips are discontinuous fan-shaped and the overall size is the smallest,and the damage degree of CFRP hole entrance and exit and surface is the lowest,demonstrating significant improvement of the machining quality.This study can provide guidance for the integrated drilling of laminated composite structure.

关 键 词：碳纤维增强复合材料(CFRP) 钛合金 叠层结构 低频振动钻削 超声振动钻削 高低频复合振动钻削 

分 类 号：V19[航空宇航科学与技术—人机与环境工程] V257[一般工业技术—材料科学与工程]