A hydrostatic rotary test bench

Abstract

The invention belongs to the field of bearing test beds and particularly discloses a hydrostatic revolution test bed comprising a support, an axial loading device and a hydrostatic thrust bearing device; the axial loading device comprises a displacement output mechanism, a load measuring mechanism and a pressure output mechanism; the displacement output mechanism is used for driving the load measuring mechanism to move up and down, the load measuring mechanism is used for transmitting and measuring the load, and the pressure output mechanism is used for loading the load onto a hydrostatic bearing; the hydrostatic thrust bearing device comprises a revolution workbench, a thrust bearing and a main shaft mechanism, the revolution workbench is used for bearing external load, the annular oil cavity thrust bearing is used for forming a hydrostatic oil film so as to balance the external load, the main shaft mechanism is used for driving the revolution workbench to do rotary motion and dynamically adjusting the rotary precision of the main shaft during motion at the same time. The hydrostatic revolution test bed capable of simulating axial load in the invention has the advantages of beingsimple in structure, convenient to operate, high in applicability and the like.

Description

technical field

[0001] The invention belongs to the field of bearing test benches, and more specifically relates to a hydrostatic rotary test bench. Background technique

[0002] The rotary table, which is widely used in large and medium-sized machine tools, is an important factor affecting the performance of the equipment. As a bearing structure to realize the rotary motion of the rotary table, its performance plays an important role in the precision and performance of the table. Most of the supporting kinematic pairs used in traditional processing equipment are rolling bearings and fluid sliding bearings (hydrodynamic pressure bearings, hydrostatic pressure bearings, and dynamic-static pressure bearings). Due to various limitations, rolling bearings, hydrodynamic pressure bearings, and dynamic-static pressure bearings cannot meet the high-speed, precision, and heavy-duty requirements of high-end processing equipment. The hydrostatic bearing has nearly zero friction and n...

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