Unlock instant, AI-driven research and patent intelligence for your innovation.

Gas-liquid two-phase composite static pressure support structure

A technology of static pressure support and air intake structure, applied in bearings, shafts and bearings, mechanical equipment, etc., can solve the problems of poor rigidity, low viscosity of compressed air, high viscosity of hydraulic oil, etc., and achieve low friction, low heat generation, and incompressibility good sex effect

Active Publication Date: 2019-06-07
SUZHOU CHENNA AUTOMATION TECH CO LTD
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at high speed, due to the high viscosity of the hydraulic oil, the internal friction and heat will be serious
At the same time, traditional aerostatic bearings and guide rails, due to the low viscosity of compressed air, generate less heat at high speeds, but due to the poor incompressibility of air, the rigidity is also poor

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Gas-liquid two-phase composite static pressure support structure
  • Gas-liquid two-phase composite static pressure support structure
  • Gas-liquid two-phase composite static pressure support structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Such as Figure 1 to Figure 4 As shown, the slider 1 and the pad 2 are used, and a small gap h0 is set between the two. When in use, the compressed air from the air source 4 flows into the air inlet 1-1 through the throttle 3, and the hydraulic oil from the oil source 6 flows into the oil inlet 2-1 through the throttle 5. Compressed air and hydraulic oil form a gas-liquid two-phase composite film at the oil cavity 2-2 and the oil sealing surface 2-3.

[0052] During this period, the thickness h1 of the air film in the composite film at the oil sealing surface 2-3 can be controlled by adjusting the air resistance of the restrictor 3 and the liquid resistance of the restrictor 5 . During general adjustment, it is necessary to ensure that the gas film thickness h1 is much smaller than the oil film thickness h2, so as to obtain high rigidity and low friction of the composite film. combine as Figure 4 It shows a schematic diagram of the velocity gradient distribution in ...

Embodiment 2

[0057] This embodiment describes the situation when the gas-liquid two-phase composite static pressure support structure is applied to the static pressure radial bearing.

[0058] Such as Figure 5 to Figure 7 As shown, after adopting the configuration of the present invention, the bearing bush 7 and the mandrel 8 may be included. A slight gap is provided between the two. Simultaneously, the bearing bush 7 is provided with some oil inlet holes 7-1, the oil cavity 7-2, the oil sealing surface 7-3, and the mandrel 8 is provided with some air inlet holes 8-1, and the journal surface 8-2.

[0059]Each oil inlet hole 7-1 is provided with a restrictor and an oil source similar to those in the first embodiment. Each air inlet 8-1 is provided with a restrictor and an air source similar to those in the first embodiment. Moreover, the adjustment of the air film thickness is substantially smaller than the micro gap, and the principle of air film thickness adjustment is the same as tha...

Embodiment 3

[0062] This embodiment describes the situation when the gas-liquid two-phase composite static pressure support structure is applied to a static pressure thrust bearing.

[0063] Such as Figure 8-10 As shown, it includes a thrust plate 9 and a bearing bush 10 . Similarly, a small gap is provided between the two, and an air inlet 9-1 and a thrust surface 9-2 are arranged on the thrust disc 9 . The bearing bush 10 is provided with an oil inlet hole 10-1, an oil chamber 10-2, an oil sealing surface 10-3, and an oil return groove 10-4.

[0064] During use, each air inlet 9-1 is provided with a restrictor similar to that in the first embodiment. Moreover, a restrictor similar to that in Embodiment 1 is provided at the oil inlet hole 10-1. The air film thickness is adjusted to be substantially smaller than the tiny gap, and the principle of air film thickness adjustment is the same as that in Embodiment 1, which will not be repeated here.

[0065] In actual implementation, when ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a gas-liquid two-phase compound hydrostatic supporting structure which comprises a sliding block and a tile block, wherein compressed air and hydraulic oil are simultaneously fed into the sliding block and the tile block, so that a gas-liquid two-phase compound thin film is formed in a tiny gap between the sliding block and the tile block; and the thickness of the gas film can be controlled according to resistance values of flow controllers on two sides. When the thickness of the gas film is extremely small when compared with the tiny gap, the compound hydrostatic support has the advantages of a pure hydrostatic support and a pure gas-static support; and the compound thin film is high in rigidity, and low in heat when the sliding block slides at high speed.

Description

technical field [0001] The invention relates to a static pressure support structure, in particular to a gas-liquid two-phase composite static pressure support structure. Background technique [0002] Liquid and gas hydrostatic bearings and guideways are widely used in precision ultra-precision machining machine tools due to their high precision and low cost. [0003] Traditional hydrostatic bearings and guides offer better rigidity. However, at high speed, due to the high viscosity of the hydraulic oil, the internal friction and heat will be serious. At the same time, traditional gas static pressure bearings and guide rails, due to the low viscosity of compressed air, generate less heat at high speeds, but due to the poor incompressibility of air, the rigidity is also poor. [0004] In view of the above-mentioned defects, the designers actively research and innovate in order to create a gas-liquid two-phase composite static pressure support structure to make it more indust...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): F16C32/06
CPCF16C32/06
Inventor 陈耀龙张朋海查俊
Owner SUZHOU CHENNA AUTOMATION TECH CO LTD