High-accuracy vertical work table base static seal structure pressing static oil cavity

Abstract

The invention discloses a static-pressure sealing structure of a base of a vertical high-precision working table and adopts the technical scheme that an annular upward bulge is arranged on the end surface of the base (5); the outer diameter of the annular upward bulge is radially greater than that of a fan-shaped static pressure supporting block (7) and is coaxial with the fan-shaped static pressure supporting block (7); a groove matched with the bulge in shape is formed in the lower surface of a driven wheel (3); the bulge and the groove form the sealing structure. With the adoption of the technical scheme, the working table forms closed static pressure support with high rigidity and high tilting moment resistance under the actions of upward, downward and radial static pressure supporting forces; since the driven wheel moves under the support of a high-pressure oil film axially and radially, the working table has the advantages of high rotation accuracy, high rigidity, high vibration resistance, strong tilting moment resistance, simple structure and small starting moment.

Description

[0001] This application is a divisional application of the following invention patent application: [0002] Original application number: 201310308718.2 [0003] Date of original filing: July 22, 2013 technical field [0004] The invention belongs to the technical field of mechanical manufacturing equipment, and relates to a workbench structure of a large-scale machining machine tool. More specifically, the invention relates to a down-pressure hydrostatic oil chamber of a hydrostatic sealing structure of a high-precision vertical workbench base. Background technique [0005] Most of the high-precision vertical worktables in the prior art are supported by plane thrust bearings and radial roller bearings. Their rotation accuracy is restricted by rolling bearings, and it is difficult to make a breakthrough improvement. Most of the accuracy is in the order of percent It is several millimeters in size, and its vibration absorption performance is very poor, so it can no longer ad...

AI Technical Summary

Problems solved by technology

[0005] Most of the high-precision vertical worktables in the prior art are supported by plane thrust bearings and radial roller bearings. Their rotation accuracy is restricted by rolling bearings, and it is difficult to make a breakthrough improvement. Most of the accuracy is in the order of percent It is several millimeters in size, and its vibration-absorbing performance is very poor, so it can no longer adapt to the processing of modern high-precision parts, especially for large-scale high-precision parts in aviation, aerospace, wind power and other industries, let alone meet its precision requirements

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