回油槽结构参数对静压推力轴承内部流场影响研究

发布时间：2018-01-01 19:32

本文关键词：回油槽结构参数对静压推力轴承内部流场影响研究　出处：《哈尔滨理工大学》2012年硕士论文　论文类型：学位论文

【摘要】：静压推力轴承由于承载能力大、运行可靠、摩擦小、刚度高等优点而广泛应用，且对其要求亦逐渐提高，尤其是静压推力轴承的使用可靠性和使用寿命。由于静压推力轴承高速下出现温度升高、油膜破裂已致静压轴承失效，直接影响可靠性与寿命，故针对此类问题，数值模拟静压推力轴承间隙流体的压力场和温度场，并进行仿真分析与性能研究，对静压轴承结构提出补充设计准则，从而提高其运行效率和使用寿命。本课题以齐重数控装备股份有限公司生产的重型数控立式车床系列化产品中的10米立车静压轴承为研究对象，依据计算流体力学、润滑理论和静压技术，建立静压推力轴承间隙油膜的数学模型，使用三维CAD软件Unigraphics NX4对其进行三维建模，采用有限体积法，利用通用有限元分析软件ICEM CFD对静压推力轴承进行网格划分，考虑变粘度条件下，，利用CFX首先模拟计算多油腔静压推力轴承和多油垫静压推力轴承的内部流场并进行对比分析，探讨回油槽设置与否对静压推力轴承的影响；然后针对多油垫静压推力轴承，变粘度条件下分别计算顺时针转速6r/min和20r/min时，回油槽宽度变化对静压推力轴承的温度分布以及压力分布的影响规律；又在回油槽宽度15mm时，其他条件不变，计算回油槽深度变化对静压推力轴承温度分布以及压力分布的影响规律，最终通过分析数值模拟结果得出回油槽结构参数对静压推力轴承温度分布和压力分布的影响规律。通过对数值计算结果进行分析，验证静压推力轴承内部流场分布情况，揭示回油槽设置对静压推力轴承内部流场影响以及回油槽结构参数即宽度和深度对多油垫静压推力轴承压力场和温度场的影响规律，完善多油垫静压推力轴承的结构设计，提高静压推力轴承工作寿命和运行效率，对工程实际中静压推力轴承设计、仿真分析及性能研究均有指导意义。
[Abstract]:The hydrostatic thrust bearing bearing capacity, reliable operation, small friction, high stiffness and wide application, and the requirements are also gradually improve, especially the reliability of hydrostatic thrust bearing and long service life. Due to hydrostatic thrust bearing under high speed temperature rise, has caused the hydrostatic bearing oil film rupture failure, directly affects the reliability of and life, so to solve this problem, numerical simulation of hydrostatic thrust bearing clearance fluid pressure field and temperature field, and analysis and performance simulation, supplementary design criteria on the structure of hydrostatic bearing, so as to improve the efficiency and service life.
In this paper 10 meters vertical lathe hydrostatic bearing products Heavy CNC vertical lathe series of Qiqihar Heavy CNC equipment produced by Limited by Share Ltd as the research object, based on computational fluid mechanics, static pressure lubrication theory and technology, establish mathematical model of oil film clearance hydrostatic thrust bearing, the 3-D modeling using 3D CAD software Unigraphics NX4, using the finite volume method of meshing hydrostatic thrust bearing using finite element analysis software ICEM CFD, considering the variable viscosity conditions, using CFX to simulate the flow field calculation of first oil cavity hydrostatic thrust bearing and oil hydrostatic thrust bearing were analyzed, to explore the oil return groove is provided with no influence on the hydrostatic thrust bearing; then the oil hydrostatic thrust bearing, under the condition of variable viscosity were calculated clockwise rotate speed of 6r/min and 20r/min, the oil return groove width of static The temperature distribution of thrust bearings and pressure distribution are studied; and in the oil return groove width 15mm, other conditions remain unchanged, the calculation of bearing oil groove depth to change the temperature distribution and pressure distribution of hydrostatic thrust were investigated, finally through the analysis of numerical simulation results of the oil return groove structure parameters on the temperature distribution of hydrostatic thrust bearing and the effect of pressure distribution.
Based on the numerical calculation results verify the hydrostatic thrust bearing internal flow field distribution, reveal the oil return groove set on the internal flow field of hydrostatic thrust bearing and oil groove structure parameters of width and depth of oil hydrostatic thrust bearing pressure field and temperature field of influence, improve the structural design of multi pad hydrostatic thrust oil to improve the working life of bearing, static pressure thrust bearing and the operation efficiency of hydrostatic thrust bearing in actual engineering design, analysis and simulation research is significant.

【学位授予单位】：哈尔滨理工大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH133.36

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