低温铣削T800 CFRP多向层合板的刀具磨损研究  

Tool Wear of T800 CFRP Multi-directional Laminates Under Cryogenic Milling

作　　者：陈啸宇 赵威[1] 赵国龙[2] 李亮[2] 李浩[1] CHEN Xiaoyu;ZHAO Wei;ZHAO Guolong;LI Liang;LI Hao(Key Laboratory of Science and Technology on Helicopter Transmission,Nanjing University of Aeronautics&Astronautics,Nanjing 210016,China;College of Mechanical and Electrical Engineering,Nanjing University of Aeronautics&Astronautics,Nanjing 210016,China)

机构地区：[1]南京航空航天大学直升机传动技术重点实验室,南京210016 [2]南京航空航天大学机电学院,南京210016

出　　处：《南京航空航天大学学报》2022年第3期397-403,共7页Journal of Nanjing University of Aeronautics & Astronautics

基　　金：国家重点研发计划(2018YFB2002202)。

摘　　要：碳纤维增强树脂基复合材料(Carbon fiber reinforced plastics,CFRP)因其高强度比以及优秀的耐腐蚀等优异性能在航空航天、汽车等领域得到广泛应用。然而,由于CFRP材料的非均质性和各向异性,其加工过程相较传统均质材料更为复杂,导致刀具磨损严重。针对这一问题,本文选用PCD立铣刀对T800 CFRP多向层合板材料进行低温铣削试验,研究了切削速度、每齿进给量以及切削介质温度等对PCD刀具后刀面磨损的影响规律。结果表明,随着切削速度和每齿进给量的增大,刀具后刀面磨损带宽VB呈下降趋势,切削介质温度为-50℃时能够得到较小的刀具后刀面磨损带宽。此外,通过MATLAB对试验结果进行了非线性拟合,获得了切削速度、每齿进给量以及切削介质温度与刀具后刀面磨损带宽的映射关系经验模型,为T800 CFRP材料铣削刀具磨损抑制和延长刀具寿命提供了关键支撑数据。Carbon fiber reinforced plastics(CFRP)are widely used in aerospace and automobile field because of its advantages,such as high strength and excellent corrosion resistance.However,due to its heterogeneity and anisotropy,the machining process is more complex than machining of traditional metal materials,which can lead to serious tool wear.In order to address this issue,PCD milling cutters are selected to conduct T800 CFRP multi-directional laminates milling tests under cryogenic condition.And then,the effect of cutting parameters and jet temperature on wear band width of flank face VB are analyzed.The results show that VB decreases with the increase of the cutting speed and the feed per teeth,and smaller VB is obtained when coolants temperature is-50℃.In addition,nonlinear fitting of the test results is carried out by MATLAB.The empirical model of mapping relationship between cutting parameters,coolants temperature and VB is obtained,which can provide key support data for T800 CFRP milling tool wear suppression and tool life prolonging.

关 键 词：碳纤维增强树脂基复合材料 低温铣削 刀具磨损 PCD立铣刀 低温氮气射流 

分 类 号：TH162[机械工程—机械制造及自动化] V258[一般工业技术—材料科学与工程]