Novel air dynamic pressure bearing
An aerodynamic pressure bearing and bearing technology, which is applied in the direction of sliding contact bearings, rotating bearings, bearings, etc., can solve the problems of foil deformation, poor impact resistance and fatigue resistance, and reduced service life, and achieve stability High, good fixation effect
Pending Publication Date: 2021-11-02
北京智拓博科技有限公司
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Problems solved by technology
[0004] The present invention provides a new type of aerodynamic pressure bearing to solve the problem of low assembly precision of the aerodynamic pressure bearing in the prior art, poor bearing capacity, poor impact resistance and fatigue resistance, and friction with air during high-speed rotation. High temperature will cause the foil of the air dynamic pressure bearing to deform at high speed, which will lead to the decrease of its buoyancy and service life, and dust will enter from the air inlet of the bearing sheet to form a dust layer. With the gradual increase of the dust layer, It will cause the frictional resistance between the foil and the foil wave to increase, causing the phenomenon of stagnation, and in severe cases, it will damage the technical problem of the bearing
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[0027] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial", The orientation or positional relationship indicated by "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the referred device or element Must be in a particular orientation, be constructed in a particular orientation, and operate in a particular orientation, and therefore should not be construed as limiting the invention.
[0028] In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative impo...
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The invention relates to the technical field of air dynamic pressure bearings, in particular to a novel air dynamic pressure bearing which is sequentially provided with a bearing seat, a foil wave, a top-layer foil piece and a bearing piece from outside to inside, and the bearing seat, the foil wave, the top-layer foil piece and the bearing piece make contact with one another in sequence. The bearing piece is an integrally-formed cylinder, and a flow guide groove is formed in the inner wall of the bearing piece; and the fluid dynamic pressure effect can be achieved according to the flow guide grooves when the bearing pieces rotate at a high speed. The following problems in the prior art are solved: an air dynamic pressure bearing is low in assembly precision and poor in bearing capacity, impact resistance and fatigue resistance, high temperature generated by friction between the air dynamic pressure bearing and air during high-speed rotation can cause foil deformation of the air dynamic pressure bearing during high-speed rotation, then buoyancy of the air dynamic pressure bearing is lowered, the service life is shortened, and dust enters from an air inlet of the bearing piece to form a dust layer, and along with the gradual increase of the dust layer, the friction resistance between the foil piece and the foil wave is increased, the clamping stagnation phenomenon occurs, and the bearing is damaged in a severe case.
Description
technical field [0001] The invention relates to the technical field of air dynamic pressure bearings, in particular to a novel air dynamic pressure bearing. Background technique [0002] Aerodynamic pressure bearings are used in more and more fields due to their low frictional resistance, high applicable speed, and wide applicable temperature range. Since the viscosity of air at room temperature is only one-fifth of that of No. 10 mechanical oil, the When it is up to 50,000 rpm, its temperature rise does not exceed 20-30°C, and it can even meet the speed requirement of up to 1.3 million rpm. Its excellent performance has become synonymous with higher efficiency and high speed, and its application prospects are very broad. [0003] In the prior art, the bearing piece of the aerodynamic pressure bearing is composed of three-section or multi-section foils. Since the aerodynamic pressure bearing requires high assembly accuracy, it is difficult to guarantee the assembly accuracy ...
Claims
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IPC IPC(8): F16C17/02F16C33/10F16C33/12
CPCF16C17/028F16C33/1015F16C33/121F16C33/125F16C33/124F16C2202/06F16C2204/42F16C2300/22
Inventor 李记东朱思伟
Owner 北京智拓博科技有限公司