Optimization of small hole throttling hydrostatic bearing based on orthogonal test
In this study we took the small hole throttling hydrostatic bearing of the internal cylindrical grinding machine as the research object.The oil film three-dimensional model established by SOLIDWORKS was imported into ICEM for mesh generation and boundary conditions naming.Fluid simulation software FLUENT was adopted for simulation analysis.The or-thogonal test method was used to design the test program to analyze the effect of the main parameters of the bearing on the bearing performance and the order of the impact of each parameter.The results showed that,the factors affecting the bearing capacity and stiffness of the hydrostatic bearing were the average clearance,the diameter of throttle holes,the distance from the throttle holes to the end face of the shaft,the number of single-row throttle holes,the eccentricity,the oil supply pres-sure,the lubricant dynamic viscosity,etc.The effect of the main parameters on the bearing capacity and stiffness of the hy-drostatic bearing was significantly different.With the maximum bearing capacity as the optimization goal,the bearing capacity of the optimized model increased by 113.99%,and the stiffness increased by 98.85%.
hydrostatic bearingsimulation analysisorthogonal testbearing capacity and stiffnessinternal cylindrical grind-ing machine
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