A thin and high-precision hydrostatic rotary table structure

Abstract

The invention discloses a thin-wall high-precision static-pressure rotation workbench. A motor is arranged in a static-pressure radial and thrust joint bearing inner hole, the high thrust rigidity of the rotation workbench is obtained and meanwhile the thickness of the rotation workbench is greatly reduced. A common oil supply track and a common oil returning track are arranged to carry out oil supplying and oil returning on radial bearings and thrust bearings at the same time, and the oil way structure is simplified. A thrust oil cavity structure and a radial oil cavity structure are distributed on a bearing bush in a centralized manner, and centrality of the integral structure is improved. The static-pressure rotation workbench has the beneficial effects of being small in thickness, good in thrust rigidity and compact in structure.

Description

technical field [0001] The invention relates to a rotary table structure used for precision ultra-precision machining machine tools, in particular to a thin, high-precision static pressure rotary table structure. Background technique [0002] The rotary table supported by hydrostatic bearing is widely used in precision ultra-precision machining machine tools because of its high rigidity, high precision and low cost. [0003] The traditional hydrostatic rotary table adopts the method of connecting the hydrostatic bearing and the motor axially in series, so the axial size of the rotary table is at least the superposition of the axial size of the hydrostatic bearing and the motor, and the general requirement for the rotary table is The axial direction should be thin; the radial bearing and the thrust bearing of the traditional hydrostatic rotary table are designed separately, each oil chamber is supplied with oil separately, and the oil return grooves of the radial bearing and ...

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Problems solved by technology

[0003] The traditional hydrostatic rotary table adopts the method of connecting the hydrostatic bearing and the motor axially in series, so the axial size of the rotary table is at least the superposition of the axial size of the hydrostatic bearing and the motor, and the general requirement for the rotary table is The axial direction should be thin; the radial bearing and the thrust bearing of the traditional hydrostatic rotary table are designed separately, each oil chamber is supplied with oil separately, and the oil return grooves of the radial bearing and the thrust bearing are not shared, which undoubtedly causes oil complexity of road design

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