Closed hydrostatic slideway

A static pressure guide rail, closed technology, applied in the direction of large fixed members, metal processing machinery parts, metal processing equipment, etc., can solve problems such as difficulties, difficulties in repair and research, and limitation of guide rail accuracy, and achieve low difficulty and good thermal stability , The effect of ensuring accuracy
CN101829904AInactive Publication Date: 2010-09-15XI AN JIAOTONG UNIV +1
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
XI AN JIAOTONG UNIV
Publication Date
2010-09-15
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention provides a closed hydrostatic slideway which comprises a base and a sliding block arranged on the base. The upper surface of the base is provided with a horizontal supporting slideway and a vertical supporting slideway in sequence from bottom to top; the sliding block is inlaid in a groove formed by the base, the horizontal supporting slideway and the vertical supporting slideway; a hydrostatic oil cavity is arranged between the upper surface of the sliding block and the lower surface of the vertical supporting slideway; a hydrostatic oil cavity is arranged between the lower surface of the sliding block and the upper surface of the base; and a hydrostatic oil cavity is arranged between the side surface of the sliding block and the side surface of the horizontal supporting slideway. In the closed hydrostatic slideway, a groove structure with a certain depth-to-width ratio is not adopted, and all main precision surfaces are all of a plane structure and can be ground, thereby reducing the processing difficulty of the slideway. Meanwhile, since the slideway and the base are both made of granite materials with good heat stability, the precision of the slideway is ensured. The straightness error of the closed hydrostatic slideway can be 0.1 mu m / 100mm, and the rigidities of the slideway in horizontal and vertical directions are both larger than 10000N / mu m.
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Description

technical field

[0001] The invention relates to a closed static pressure guide rail, in particular to a high precision and high rigidity closed static pressure guide rail suitable for ultra-precision machine tools. Background technique

[0002] Ultra-precision machine tools require the guide rail to have extremely high manufacturing accuracy, and at the same time require the coupling surface to be free of friction and wear. Based on the above requirements, hydrostatic guide rails are widely used in the design of ultra-precision machine tools. According to the form of the guide rail, the structural form of the static pressure guide rail can be divided into two types: open type and closed type. The planar closed type static pressure guide rail can withstand loads and overturning moments in all directions, and has the characteristics of strong bearing capacity, high precision and high rigidity. The existing planar closed guide rails mostly adopt an integrated structure, and it ...

Claims

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