Experimental Research Regarding the Influence of Pocket Pressure Values on the Stiffness of Hydrostatic Guideways

Abstract:

A very important parameter which must be considered when designing a hydrostatic guideway of high stiffness is the pressure from the hydrostatic pockets. Modifications of this parameter during functioning are caused by variations of flow and supply pressure and also by the defective geometry of the hydrostatic pockets. The pocket pressure has a major importance for achieving the hydraulic sustentation, because it determines the load capacity, which thenceforth determines the film thickness and the flow. The latter is used for determining the hydraulic resistance of lands and also for deciding the geometry of the hydrostatic guideway as a whole. Based on these considerations, the analysis of the pocket pressure variations represents an important criterion which should be taken into account when designing a hydrostatic guideway with a very high stiffness. The present paper contains a new method for analysing the hydrostatic guideway behaviour with regard to its stiffness, for different pocket pressure values. The experimental research was carried out on a closed hydrostatic guideway, with the moving element having the dimensions of 500x260 [m and the pocket dimensions of 150x88 [m.

• Periodical: Applied Mechanics and Materials (Volume 657)
• Pages: 544-548
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.657.544
• Online since: October 2014
• Authors: Marius Pascu*, Gheorghe Stan
• Keywords: Guideway, Hydraulic, Pocket, Restrictor, Stiffness

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