Thrust air dynamic-pressure bearing

An aerodynamic bearing and thrust technology, which is applied to sliding contact bearings, rotating bearings, bearings, etc., can solve the problems of low bearing capacity of thrust aerodynamic bearings, and achieve the effect of strong bearing capacity and simple structure.

Active Publication Date: 2020-04-10
江苏毅合捷汽车科技股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to address the above problems and provide a thrust air dynamic pressure bearing to solve the problem of low bearing capacity of the existing thrust air dynamic pressure bearing

Method used

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Embodiment Construction

[0022] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods. It should be understood that the embodiments described here are only used to explain the present invention, but not to limit the present invention.

[0023] Please refer to figure 1 and figure 2 as shown, figure 1 It is a structural schematic diagram of a thrust aerodynamic pressure bearing of the present invention; figure 2 It is a partially enlarged view of a thrust air dynamic pressure bearing of the present invention.

[0024] In this embodiment, a thrust aerodynamic pressure bearing includes an air bearing surface 2 of the aerodynamic pressure bearing, and a plurality of grid groups 1 are arranged on the air bearing surface 2, and a grid group 1 is arranged between adjacent grid groups 1 The first gap, each grid group 1 includes a plurality of grids 3 uniformly distributed along the circumf...

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Abstract

The invention discloses a thrust air dynamic-pressure bearing. The thrust air dynamic-pressure bearing comprises an air flotation surface of the air dynamic-pressure bearing, wherein a plurality of grid groups are arranged on the air flotation surface; a first gap is arranged between adjacent grid groups; each grid group comprises a plurality of grids which are uniformly distributed along a peripheral direction; the grids are sunken inwards and are arc-shaped; a central angle of each grid is defined as alpha, is greater than 0 degree and is less than or equal to 60 degrees; all the grids in the same grid group are same in width; a second gap is arranged between adjacent grids in the same grid group; all the grids located on the air flotation surface are same in length; and the widths of all the grids located on the air flotation surface are gradually reduced from the center of the air flotation surface to the outer edge of the air flotation surface. The thrust air dynamic-pressure bearing is simple in structure and high bearing capacity.

Description

technical field [0001] The invention relates to the technical field of bearings, in particular to a thrust air dynamic pressure bearing. Background technique [0002] With the development of ultra-precision machining and testing technology, the realization of ultra-high-precision rotary motion and linear motion is becoming more and more important. Aerodynamic bearings are widely used in modern ultra-precision machining machine tools and measuring instruments due to their low frictional power consumption, smooth operation, and cleanliness to achieve high-precision rotary and linear motion. [0003] The principle of the air dynamic pressure bearing is that the air with a certain viscosity is brought into the convergence space by the high-speed rotating journal, and a dynamic pressure air film is formed between it and the working surface of the journal, so that the two working surfaces are separated from each other. For journal bearings, the converging space can be formed by t...

Claims

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Application Information

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IPC IPC(8): F16C17/04
CPCF16C17/045
Inventor 刘全姜开春俞芸萝
Owner 江苏毅合捷汽车科技股份有限公司
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