液体静压轴承试验台设计及油膜承载性能研究-design of hydrostatic bearing test bed and research on oil film bearing performance.docxVIP

AbstractHydrostatic bearing is an important support for high-end manufacturing equipment, its components’ precision, longevity, reliability directly affect the operating performance of high-end manufacturing equipment, and the research for mechanism of hydrostatic support system for supporting and the accuracy of the resulting performance of its control is not sufficient, so it is urgent to do the research of the hydrostatic bearing. The purpose of this study is to design a hydrostatic bearing test rig, which can test the hydrostatic bearing’s oil film temperature, pressure and thickness, providing realistic basis for the study of the hydrostatic bearing.Firstly, This paper analyzes the present situation of the development of bearing test rig, the working principle, characteristics of hydrostatic bearings, throttle and working principle of the classification.Secondly, the working principle of hydrostatic bearing and the advantages and disadvantages are analyzed In this paper, and it also introduces the most widely constant supply working principle of hydrostatic bearings.Thirdly, the hydrostatic bearing test rig design programs studied were introduced, and ultimately chose the most reasonable mechanical structure design. Structural design innovation of this trial hydrostatic bearings, spindles, loading mechanism described in detail, mainly serpentine cooling circuit design hydrostatic bearing test. Spindle divided into two sections, according to the principles of the Morse taper, the use of bolted connections; loading mechanism with hydraulic cylinder compression spring from the top of the load bearing loads.In the last, On the basis of this design, Hydrostatic bearing oil film on the test was simulated in pressure field and carrying capacity based on the principles of fluid dynamics, referring to provide comparative test results for the design of the test rig.Keywords: hydrostatic bearing test rig, structural design, bearing, load test, simulation analysis