No-drifting high accurate open type static pressure guide rail

A static pressure guide rail, high-precision technology, applied in the direction of large fixed members, metal processing machinery parts, metal processing equipment, etc., can solve the problems of poor rigidity, large oil film thickness, etc., and achieve the effect of improving the rigidity of the oil film and increasing the rigidity
CN101549460AInactive Publication Date: 2009-10-07DONGHUA UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
DONGHUA UNIV
Publication Date
2009-10-07
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a no-drifting high accurate open type static pressure guide rail, which comprises a floating guide rail (1) and a supporting guide rail (2); the floating guide rail (1) is placed on the supporting guide rail (2); a static pressure oil chamber (6) and a negative pressure chamber (7) are formed on the contacting surface of the floating guide rail (1) and the supporting guide rail (2); an oil supply system (9) is connected to the static pressure oil chamber (6) by a restrictor (5); the negative pressure chamber (7) is connected with the vacuum pump (4); the vacuum pump is connected with the fuel supply system (9) by a oil gas separator; and a oil-returning groove connected with the oil supply system (9) is formed between the floating guide rail (1) and the supporting guide rail (2). The invention is simple and practicable, increases oil membrane rigidity, can regulate the oil membrane thickness by the vacuum pump, can be widely applied in open type static pressure guide rails with various structures, especially small and middle low load precision or super-precision machine tools such as precision roll grinding machine and sophisticated planer which are limited by the problem of drifting.
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Description

technical field

[0001] The invention belongs to the field of static pressure guide rails, in particular to an open static pressure guide rail. Background technique

[0002] Due to its advantages of long life and high precision, hydrostatic guide rails are widely used in the field of machinery. The open hydrostatic guide rail is force-closed, that is, it can only rely on the weight or load of the moving part to keep the moving part from separating from the support. It only has an oil chamber in one direction of the guide rail, and it can only be horizontal or at a small inclination angle. The rigidity depends on the thickness of the oil film, the thicker the oil film, the worse the rigidity, and the smaller the oil film thickness, the better the rigidity. This static pressure guide rail has a simple structure and is easy to manufacture and adjust. It is mainly used to support heavy loads moving at medium and low speeds, and sometimes it is also used in fast reciprocating pl...

Claims

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