摘要
针对静压回转工作台间隙油膜的温升导轨回转工作台本体热变形的问题,采用计算流体力学软件FLUENT对油膜的温度场与压力场进行数值模拟与分析。研究了回转工作台转速和油腔深度对油膜温度场与压力场的影响规律。计算结果表明:油膜压力随着转速的提高而减小,油膜压力随油腔深度的增加而减小。油膜温度随着转速的提高而上升,当转速为40 r/min时,油腔温度为322 K,油膜温度过高易导致热变形,影响机床加工精度;当油腔深度大于3 mm时,油腔深度对油膜温度影响不大。仿真结果为静压回转工作台的结构设计提供了一种思路。
The temperature rise in in the clearance oil film of hydrostatic rotary worktable is the main factor for the deformation of rotary worktable.The temperature field and pressure field of oil film were simulated and analyzed by computational fluid dynamics software FLUENT.The influence of rotary worktable speed and oil chamber depth on oil film temperature field and pressure field was studied.The results show that the oil film pressure decreases with the increase of rotational speed.The oil film pressure decreases with the increase of the depth of the oil chamber.The temperature of oil film increases with the increase of rotational speed.When the rotational speed is 40 r/min,the temperature of oil chamber is 322 K.Excessive oil film temperature can easily lead to thermal deformation and affect the processing accuracy of machine.When the depth of the oil chamber is greater than 3 mm,the influence of the depth of the oil chamber on the oil film temperature is not significant.The simulation results provide an idea for the structure design of hydrostatic rotary worktable.
作者
张敬东
郑彬
ZHANG Jing-dong;ZHENG Bin(College of Transportation and Automobile Engineering,Panzhihua University,Panzhihua 617000)
出处
《机械设计》
CSCD
北大核心
2019年第S02期104-108,共5页
Journal of Machine Design
基金
攀枝花学院科研培育项目(2017ZD007)
攀枝花学院博士科研启动项目(bkqj2017006).
关键词
静压回转工作台
油膜
流场
数值模拟
hydrostatic rotary worktable
oil film
flow field
numerical simulation
