Analysis of Hydrodynamic Porous Bearing with External Pressure Supply

For the need of high speed and load capacity of precision industry, a bearing used in a high speed spindle is studied. The hydrodynamic bearing composed a hydrodynamic bearing made of porous material and several hydrostatic chambers with an external oil system. The hydrodynamic bearing is pressurize...

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Bibliographic Details
Published in:Key engineering materials 2015-04, Vol.642, p.328-332
Main Authors: Lo, Chi Yu, Hsieh, Hui An, Shaw, Dein
Format: Article
Language:English
Subjects:
Bearing
Chambers
Fluid dynamics
Fluid flow
High speed
Hydrodynamics
Porous materials
Spindles
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Summary:For the need of high speed and load capacity of precision industry, a bearing used in a high speed spindle is studied. The hydrodynamic bearing composed a hydrodynamic bearing made of porous material and several hydrostatic chambers with an external oil system. The hydrodynamic bearing is pressurized with oil chamber and supports the spindle shaft both at rest and at rotation state. Because of the external pressure and the property of porous material, the load capacity of hydraulic bearing can be promoted without decreasing precision. To consider the relationship of parameters, we applied the Reynolds equation and Darcy’s law to describe the flow of the oil film between bearing and spindle shaft.
ISSN:1013-9826
1662-9795
1662-9795
DOI:10.4028/www.scientific.net/KEM.642.328