Study on Precision Machine Table Equipped with Constant-Flow Hydrostatic Water Bearings

Autor:	Etsuo Fujita, Akinori Yui, Shigeki Okuyama, Alexander H. Slocum, Gerald Rothenhofer, Takayuki Kitajima
Rok vydání:	2009
Předmět:	Engineering business.product_category Bearing (mechanical) Foil bearing business.industry General Engineering Mechanical engineering Stiffness Environmental pollution Linear motor Machine tool law.invention Magnetic core law medicine medicine.symptom Hydrostatic equilibrium business
Zdroj:	Advanced Materials Research. :664-669
ISSN:	1662-8985
Popis:	In order to realize environmental-friendly machine tools, a linear-motor-driven table supported by constant-flow hydrostatic water bearings is developed. The table system is free from environmental pollution because the system needs no oil. For simplicity, a single-sided bearing system is chosen for the table-slide. To obtain a high sustaining force, preload is applied to the bearings using the attractive force of an iron core linear-motor’s magnets. The preload is effective in both the vertical and horizontal directions by inclined motor magnets. Miniature gear-pumps supply flow to the bearings without pump pulsation, and the bearings consume very small amounts of water and electric power. The measured table sustaining force was 3.0kN and static stiffness was 0.3kN/m under a flow rate Q=0.92mL/s per bearing and ideal bearing clearance h=16m.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::056f4d0e4e9af5cbf30ed6bc279f9fdb https://doi.org/10.4028/www.scientific.net/amr.76-78.664 Zobrazit plný text záznamu