CFRP超声振动切削刀具磨损特性研究  

Study on Wear Characteristics of CFRP Ultrasonic Vibration Cutting Tools

作　　者：封志彬 焦锋[1] 王雪 FENG Zhibin;JIAO Feng;WANG Xue(Henan Polytechnic University,School of Mechanical and Power Engineering,Jiaozuo 454003,He′nan,China)

机构地区：[1]河南理工大学机械与动力工程学院,河南焦作454003

出　　处：《机械科学与技术》2024年第11期1855-1864,共10页Mechanical Science and Technology for Aerospace Engineering

基　　金：国家自然科学基金项目(51675164);河南省高等学校重点科研项目(24B460010);河南省高等学校重点科研项目(24A460012);河南省科技攻关项目(242102220002)。

摘　　要：为揭示不同振动方向在CFRP(Carbon fiber reinforced plastic)切削中对刀具磨损的影响,分别给刀具施加切向和径向两种振动来切削不同方向角的CFRP,并与普通切削进行对比。通过理论分析,不同振动方向对占空比和刀具角度有着很大的影响。除此,方向角对纤维的弯曲变形和断裂位置也有着很大的影响。试验结果表明:切向振动切削的刀具磨损值整体较低,较普通切削和径向振动切削最多可降低分别约27.9%和37.1%;钝角切削时的刀具磨损值整体低于锐角切削时的刀具磨损值,普通切削、径向振动切削和切向振动切削3种切削中降低的幅度最低分别约为71.8%、66.2%和70.9%。平行切削或者临近平行切削,刀具后刀面的磨损宽度较为均匀,其长度约占整体磨损长度的2/3。切向振动切削有利于延长刀具的使用寿命。In order to reveal the influence of the different vibration directions on the tool wear in CFRP(carbon fiber reinforced plastic)cutting,tangential and radial vibration were applied separately to the tool to cut CFRP with different direction angles,and compared with ordinary cutting.Through theoretical analysis,different vibration directions have great influence on the duty cycle and tool angle.In addition,the orientation angle also has a great influence on the bending deformation and fracture position of the fiber.The experimental results show that the tool wear value of tangential vibration cutting is generally low,which can be reduced by about 27.9%and 37.1%respectively compared with ordinary cutting and radial vibration cutting.The tool wear value of obtuse angle cutting is generally lower than that of acute angle cutting.The minimum reduction ranges of ordinary cutting,radial vibration cutting and tangential vibration cutting are about 71.8%,66.2%and 70.9%respectively.In parallel cutting or near parallel cutting,the wear width of the tool flank is relatively uniform,and its length accounts for about 2/3 of the overall wear length.Tangential vibration cutting is beneficial to prolong the service life of the cutting tool.

关 键 词：方向角 径向振动 切向振动 刀具磨损 撕裂长度 

分 类 号：TG506.5[金属学及工艺—金属切削加工及机床]