Proceedings of the 12th International Symposium in Fluid Control, Measurement and Visualization
巻, 号, ページ
OS19-01-3
pp. 1-7
出版年月
2013年11月19日
出版者
和文:
英文:
会議名称
和文:
英文:
12th International Symposium in Fluid Control, Measurement and Visualization (FLUCOME 2013)
開催地
和文:
奈良
英文:
Nara
アブストラクト
Demands for hard-to-cut materials have increased in ultra-precision machining field. In order to meet such demands, high performance guideways of a machine tool are required. In this study, in order to realize a bearing with high dynamic and static stiffness, a hydrostatic bearing using an inherent restrictor with a thin metal plate is newly proposed. The proposed bearing has a thin metal plate which can deform elastically according to the pressure difference of working oil between both sides of the plate. Consequently, the deformation compensates the bearing clearance by adjusting the inherent restrictor. In this study, modelling and numerical analysis of the proposed bearing were conducted. From the result, it was clarified that the bearing stiffness and damping can be improved and the oil flow can be reduced by applying the inherent restrictor with a thin metal plate. Furthermore, an evaluation system for the bearing property was constructed and the load capability, the static stiffness, the dynamic stiffness, the flow characteristic, and the response characteristic of the bearing with a thin metal plate were compared with that of the conventional bearing. Experimental results confirmed that a high performance hydrostatic bearing can be realized by applying the proposed inherent restrictor.
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