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

Inactive Publication Date: 2009-10-07
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a drift-free high-precision open hydrostatic guide rail to solve the defects of large oil film thickness and poor rigidity in the prior art

Method used

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  • No-drifting high accurate open type static pressure guide rail
  • No-drifting high accurate open type static pressure guide rail
  • No-drifting high accurate open type static pressure guide rail

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Such as figure 2 As shown, a drift-free high-precision open hydrostatic guide rail includes a planar floating guide rail 1 and a supporting guide rail 2. The floating guide rail 1 is placed on the supporting guide rail 2. The contact between the floating guide rail 1 and the supporting guide rail 2 There is a static pressure oil chamber 6 and a circular negative pressure chamber 7 on the surface. The negative pressure chamber 7 is opened between the two static pressure oil chambers 6. In order to ensure the stable flow of the oil supply system 9, a constant pressure supply is adopted. The oil system is connected to the static pressure oil chamber 6 through the restrictor 5, the negative pressure chamber 7 is connected to the jet vacuum pump 4, and the vacuum pump is connected to the oil supply system 9 through the oil-gas separation device, and the opening between the floating guide rail 1 and the support guide rail 2 There is an oil return groove communicated with the...

Embodiment 2

[0040] The difference between the second embodiment of the drift-free high-precision open static pressure guide rail of the present invention and the first embodiment is that the floating guide rail 1 and the support guide rail 2 are V-shaped guide rails, and the static pressure oil chamber 6 and the negative pressure chamber 7 are symmetrically arranged on the two planes of the "V" shape, the negative pressure chamber 7 is square, and the oil return groove is composed of the longitudinal oil return groove 8 opened on the surface of the floating guide rail 1 and the transverse oil return groove 3 opened on the support guide rail 2 composition.

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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.

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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23Q1/01
Inventor 戴惠良邹鯤周勤之丁振乾朱丰训闫如忠杨延竹马涛张亮刘思仁李兴军
Owner DONGHUA UNIV
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