Scale structure type linear dynamic pressure air bearing and its design method

A technology of dynamic pressure air bearing and scaling structure, applied in the direction of bearing, shaft and bearing, mechanical equipment, etc., can solve the problems of aerodynamic instability and insufficient load, achieve high reliability, increase stability, improve stability and reliability sexual effect

Active Publication Date: 2016-08-03
南京耦合动力工程技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the traditional simple rectangular inner channel, the profile of the channel cannot exert the best effect of dynamic pressure, which will lead to problems of insufficient load and aerodynamic instability

Method used

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  • Scale structure type linear dynamic pressure air bearing and its design method
  • Scale structure type linear dynamic pressure air bearing and its design method
  • Scale structure type linear dynamic pressure air bearing and its design method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A linear dynamic pressure air bearing with a scaling structure, which consists of: a bearing body 1, the inner surface of the bearing body has a dynamic pressure structure, and the dynamic pressure structure is a scaling linear pressurized channel groove.

Embodiment 2

[0026] According to the zoom-shaped linear dynamic pressure air bearing described in Embodiment 1, the zoom-shaped linear pressurized runner groove is a Rafal nozzle-shaped linear pressurized runner groove or a fish head-shaped linear pressurized runner groove The groove line adjusts the radial and axial pressure distribution of the air film through different angles: when the angle between the groove line and the axial direction is large, the radial air film force is large; when the angle is small, the axial air force Membrane force is greater.

[0027] The slot width distribution of the fish head structure is asymmetrical, first decreases and then increases, and the slopes of the decrease and increase are different; the width of the Rafal nozzle structure is symmetrically distributed, first decreases and then increases. According to the characteristics of forming air film force, they are respectively applied to long bearings and short bearings.

Embodiment 3

[0029] A method for manufacturing a linear dynamic pressure air bearing with a scaling structure, the method includes the following parameters:

[0030] (1) Selection of air bearing body material, that is, according to the temperature, pressure and working medium of the air bearing application, reasonably select wear-resistant, high temperature resistant and self-lubricating performance materials as the material of the air bearing body;

[0031] (2) The hydrodynamic structure design of the air bearing, that is, according to the temperature, pressure and working fluid conditions of the air bearing application, as well as the journal rotation, whirl speed and load bearing properties, reasonably determine the shape of the scaling structure;

[0032] (3) The body structure design of the air bearing, that is, according to the load nature, stability requirements and working medium conditions of the air bearing, measures such as rubber rings, metal rubber and elastic composite materia...

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Abstract

The invention relates to a scaling structure type linear dynamic pressure gas bearing and a manufacturing method. A gas lubrication technology originates in the middle of 19th century, and a gas-lubricated bearing, as a supporting technology with high speed, low power consumption and high precision, is widely applied to rotary machines such as gyroscopic instruments, electronic computer memory units, high speed machine tools, centrifugal machines, compressors, blowers and pumps. The scaling structure type linear dynamic pressure gas bearing comprises a bearing body (1), wherein a dynamic pressure structure, which is scaling-shaped linear pressurization channel slot, is formed in the inner surface of the bearing body. The bearing is used for supporting a high-speed rotary machine.

Description

Technical field: [0001] The invention relates to a linear dynamic pressure air bearing with a scaling structure and a manufacturing method thereof. Background technique: [0002] Gas lubrication technology originated in the middle of the 19th century. As a high-speed, low power consumption, and high-precision support technology, gas-lubricated bearings are widely used in rotating machinery such as gyro instruments, electronic computer memory devices, high-speed machine tools, centrifuges, compressors, fans, and pumps. middle. In some ultra-high temperature, ultra-low temperature and strong radiation environments, gas bearings have unique advantages such as no lubricant, no pollution, no moving parts in the bearing itself, and no contact movement. [0003] The gas dynamic pressure bearing is a pressure field generated by viscous gas in the convergent wedge between two relative moving surfaces, forming a gas film force to support the high-speed rotation of the rotor, that is,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16C32/06
Inventor 杨金福陈昌婷黄锴陈策邱敬乐
Owner 南京耦合动力工程技术有限公司
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