摘要
采用正十二边形切削轨迹方法研究了碳纤维增强复合材料(CFRP)的高速切削性能,重点研究了冷却润滑条件、纤维切削角、切削速度和顺/逆铣对材料加工性能的影响,揭示了典型纤维切削角下的材料去除机理。研究表明:使用聚晶金刚石铣刀沿等差为30°的切削角侧铣单向CFRP时,法向切削力F_(n)和切向切削力F_(t)均遵循一个特定的规律。相较于顺铣,逆铣时的F_(n)最大减小25%,F t最大减小40%,表面粗糙度Sa减小10%~35%。相较于干切削,纳米流体微量润滑切削下的F t减小约20%,切削温度降低约40%。
High-speed cutting performance of CFRP was investigated by a specially designed regular dodecagonal cutting trajectory method.Factors such as cooling and lubrication conditions,fiber cutting angles,cutting speed,and down/up milling were analyzed for their influence mechanism on the cutting performance of CFRP.Material removal mechanism under typical fiber cutting angles was analyzed.The results indicate that when PCD milling cutter mills unidirectional CFRP with a constant 30°angular difference,both of normal cutting force(F n)and tangential cutting force(F_(t))follows a specific pattern.Compared to down milling,F_(n)reduces 25%at least and F_(t)reduces 40%at least in up milling,while the surface roughness Sa reduces 10%to 35%.Compared to dry cutting,nanofluid for minimal quantity lubrication machining F t reduces 20%approximately,and cutting temperature decreases around 40%.
作者
张立峰
张晓光
ZHANG Lifeng;ZHANG Xiaoguang(College of Aeronautical Engineering,Civil Aviation University of China,Tianjin,300300)
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2023年第21期2622-2628,共7页
China Mechanical Engineering
基金
天津市教委科研计划(2021KJ039)。
关键词
纳米流体微量润滑
顺/逆铣
高速铣削
材料去除模型
碳纤维增强复合材料
nanofluid minimum quantity lubrication
down/up milling
high speed milling
material removal model
carbon fiber reinforced plastic(CFRP)composite material
作者简介
张立峰,男,1983年生,讲师。研究方向为航空材料精密加工技术、复合材料力学。发表论文30余篇。E-mail:zhanglifeng@tju.edu.cn。
