基于FLUENT的微量润滑磨削流场仿真研究  

Minimal quantities lubricant grinding based on FLUENT flow field simulation

作　　者：孙建 钱炜[1] 丁子珊 SUN Jian;QIAN Wei;DING Zi-shan(College of Mechatronics and Electrical Engineering,University of Shanghai for Science and Technology,Shanghai 200090,China)

机构地区：[1]上海理工大学机械工程学院,上海200090

出　　处：《机电工程》2021年第7期865-872,共8页Journal of Mechanical & Electrical Engineering

基　　金：国家自然科学基金资助项目(51705323)。

摘　　要：为了对微量润滑参数进行优化,提高微量润滑的冷却润滑效果,对砂轮流场和流场中磨削液雾滴轨迹进行了分析,对影响磨削液有效流量的因素进行了研究。基于二维仿真模型,应用k-ε湍流模型,通过FLUENT软件对砂轮流场进行了仿真研究,获得了不同参数条件下的流场分布;应用离散相模型对磨削液雾滴运动轨迹进行了仿真,得到了不同参数条件下雾滴的轨迹状态。研究结果表明:随着砂轮线速度的增大和最小间隙的减小,磨削区的返回流不断增强;磨削液进入磨削区的有效流量与砂轮线速度、压缩空气压强有关;相同线速度条件下,磨削液的有效流量随压缩空气的增大而先增大、后减小;磨削液流量对进入磨削区的有效流量影响较小。In order to optimize the minimal quantities lubrication parameters and improve the cooling and lubrication effect of the minimal quantities lubrication,the flow field of the grinding wheel and the trajectory of the grinding fluid droplets in the flow field were studied,and the factors affecting the effective flow of the grinding fluid were explored.Based on two-dimensional simulation model and the k-εturbulence model,the flow field of the grinding wheel was simulated through FLUENT software,and the flow field distribution under different parameter conditions was obtained.Based on the discrete phase model,the motion trajectory of the grinding liquid droplets was simulated,and the droplet trajectory state under different parameter conditions was obtained.The research results show that,with the increase of the linear speed of the grinding wheel and the decrease of the minimum gap,the return flow in the grinding zone continues to increase.The effective flow of grinding fluid into the grinding zone is related to the linear velocity of the grinding wheel and the pressure of compressed air.Under the same linear velocity,the effective flow rate of grinding fluid first increases and then decreases with the increase of compressed air.The flow of grinding fluid has little effect on the effective flow entering the grinding zone.

关 键 词：磨削液 气流场 微量润滑 有效流量 

分 类 号：TH16[机械工程—机械制造及自动化] TG580.1[金属学及工艺—金属切削加工及机床]