Abstract
The hydraulic circuit, through which the mineral oil is brought, is an important part of hydrostatic bearings. The annular hydrostatic thrust bearing consists of two sliding plates divided by a layer of mineral oil. In the lower plate, there are oil grooves which distribute the liquid between the sliding areas. The hydraulic circuit is made of two basic parts: the energy source and the controlling part. The hydraulic pump, which brings the liquid into the sliding bearing, is the source of the pressure energy. The sliding bearing is weighted down by axial force, which can be changed during the process. That´s why in front of the particular oil grooves control components adjusting pressure and flow size are located. This paper deals with a project of a hydraulic circuit for regulation of fluid layer in the annular hydrostatic thrust bearing and the testing equipment for measuring its physical properties. It will include the issue of measuring loading capacity and height of the fluid layer in the annular hydrostatic thrust bearing.
Highlights
The hydraulic circuit, through which the mineral oil is brought, is an important part of hydrostatic bearings
This paper presents the design of experimental equipment which was built to verify the assumptions and results obtained from numerical experiment
Experimental equipment for hydrostatic thrust bearing testing consists of several auxiliary parts, which simulate the function of the rotary table of machine tools
Summary
In the previous work [1] the flow in the annular multirecess hydrostatic thrust bearing was investigated by means of numerical modelling. Control of rotational movement is provided by mechanical coupling which is adjustable to the required size of the bearing speed Another important part is the construction that carries the load acting on the hydrostatic thrust bearing. Oscillatory flow at the outlet of the pump and the resulting pressure pulsations in the lines can result in variation of the fluid layer thickness in a hydrostatic thrust bearing. This may adversely affect the accuracy of position of the movable plate of the bearing. In this case the axial load can be changed continuously For this purpose second source of pressure energy was applied that enables the load control. Detailed description of individual parts, which is essential for the understanding of the experimental apparatus function, will be provided in the chapters
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