CN107269701A - A kind of plane air-bearing with air drain - Google Patents

A kind of plane air-bearing with air drain Download PDF

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Publication number
CN107269701A
CN107269701A CN201710564930.3A CN201710564930A CN107269701A CN 107269701 A CN107269701 A CN 107269701A CN 201710564930 A CN201710564930 A CN 201710564930A CN 107269701 A CN107269701 A CN 107269701A
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China
Prior art keywords
bearing
air
high pressure
gases
groove
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CN201710564930.3A
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Chinese (zh)
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CN107269701B (en
Inventor
赵明翰
王磊
葛升民
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Harbin Institute of Technology
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Harbin Institute of Technology
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Priority to CN201710564930.3A priority Critical patent/CN107269701B/en
Publication of CN107269701A publication Critical patent/CN107269701A/en
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Publication of CN107269701B publication Critical patent/CN107269701B/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C32/00—Bearings not otherwise provided for
    • F16C32/06—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings
    • F16C32/0603—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a gas cushion, e.g. an air cushion
    • F16C32/0614—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a gas cushion, e.g. an air cushion the gas being supplied under pressure, e.g. aerostatic bearings

Abstract

The invention provides a kind of plane air-bearing with air drain, belong to the plane air-bearing technical field with air drain.The top surface of the bearing air supporting part is set to gases at high pressure gas film behavior face and damping area, center of circle part and outer ring portion of the damping area for bearing air supporting portion top surface, gases at high pressure gas film behavior face is arranged between center of circle part and outer ring portion, inner groove is provided between gases at high pressure gas film behavior face and center of circle part, outer groove is provided between gases at high pressure gas film behavior face and outer ring portion, the inner end of straight-line groove is connected with inner groove, the stage casing of straight-line groove is connected with outer groove, the edge of bearing air supporting part is led in the outer end of straight-line groove, gases at high pressure gas film behavior face is provided with upward stomata.The present invention is applied to the occasion of plane air-bearing, the larger application field especially to requiring air supporting bearing capacity, such as large-scale single-axle air bearing table.The present invention can provide damping action in plane air-bearing, so as to inhibit the generation of " pneumatic hammer " phenomenon.

Description

A kind of plane air-bearing with air drain
Technical field
The present invention relates to a kind of plane air-bearing with air drain, belong to plane air-bearing technical field.
Background technology
The plane air-bearing primary structure proposed both at home and abroad at present is as shown in figure 1, upward stomata outlet provides gravity The lift of gas in direction, floats bearing, and lateral stomata outlet provides the lift of gas of horizontal direction, limits bearing transverse shifting, its The top view of air supporting part is as shown in Figure 2.Illustrated in Fig. 2 by taking four holes as an example, the several holes of actual conditions are needed according to meter Result is calculated to obtain.Four hole outgassing directions uniform outlet as shown in arrow forms air film in whole round bearing plane in Fig. 2.This Planting the shortcoming of structure is：Whole air film is integrated, once the weight of loading ability of bearing is bigger than normal, is then easily formed air film lift of gas and is shaken Swing, that is, described " pneumatic hammer " phenomenon, it is impossible to normal work, tracing it to its cause, to be that air supporting rigidity is excessive can not be effectively formed resistance Buddhist nun.
The content of the invention
The invention aims to solve the problem of above-mentioned prior art is present, and then provide a kind of plane with air drain Air-bearing.
The purpose of the present invention is achieved through the following technical solutions：
A kind of plane air-bearing with air drain, including：Bearing air supporting part, the top surface of the bearing air supporting part is set to Gases at high pressure gas film behavior face and damping area, center of circle part and outer ring portion of the damping area for bearing air supporting portion top surface, Gases at high pressure gas film behavior face is arranged between center of circle part and outer ring portion, gases at high pressure gas film behavior face and center of circle part it Between be provided with inner groove, between gases at high pressure gas film behavior face and outer ring portion be provided with outer groove, the inner end of straight-line groove and inner groove It is connected, the stage casing of straight-line groove is connected with outer groove, the edge of bearing air supporting part, gases at high pressure are led in the outer end of straight-line groove Gas film behavior face is provided with upward stomata.
The operation principle of the present invention is as follows：
When air-bearing load becomes weight, whole bearing interior space can quickly diminish, and the air on damping area is compressed, Air after compression serves the effect for preventing bearing interior space from diminishing when being discharged bearing by air drain；When air-bearing shafts are carried When load lightens, whole bearing interior space can quickly become big, and the air on damping area is stretched, and the air after stretching passes through air drain The effect for preventing bearing interior space from becoming big is served when drawing air into bearing.
Beneficial effects of the present invention：
Instant invention overcomes the shortcoming and defect that prior art is present.Present invention could apply to answering for plane air-bearing With occasion, the larger application field especially to requiring air supporting bearing capacity, for example：Large-scale single-axle air bearing table.The present invention can be flat Effective damping action is provided in the air-bearing of face, so as to inhibit the generation of " pneumatic hammer " phenomenon.
Brief description of the drawings
Fig. 1 is the structural representation of existing plane air-bearing.
Fig. 2 is the top view of existing plane air-bearing air supporting part.
Fig. 3 is the top view of air-bearing air supporting part of the present invention.
Fig. 4 is the stereogram of air-bearing air supporting part of the present invention.
Reference in figure, 1 is bearing air supporting part, and 2 be center of circle part, and 3 be outer ring portion, and 4 be inner groove, and 5 are Outer groove, 6 be straight-line groove, and 7 be upward stomata, and A is gases at high pressure gas film behavior face, and B is damping area.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail：The present embodiment using technical solution of the present invention as Under the premise of implemented, give detailed embodiment, but protection scope of the present invention is not limited to following embodiments.
As shown in Figure 3 and Figure 4, a kind of plane air-bearing with air drain involved by the present embodiment, including：Bearing air supporting Part 1, it is axle that the top surface of the bearing air supporting part 1, which is set to gases at high pressure gas film behavior face A and damping area B, the damping area B, Center of circle part 2 and the outer ring portion 3 of the top surface of air supporting part 1 are held, gases at high pressure gas film behavior face A is arranged on center of circle part 2 and outer Between loop section 3, inner groove 4, gases at high pressure gas film behavior face A are provided between gases at high pressure gas film behavior face A and center of circle part 2 Outer groove 5 is provided between outer ring portion 3, the inner end of straight-line groove 6 is connected with inner groove 4, the stage casing of straight-line groove 6 and outer groove 5 are connected, and the edge of bearing air supporting part 1 is led in the outer end of straight-line groove 6, and gases at high pressure gas film behavior face A is provided with upward Stomata 7.
The inner groove 4 and outer groove 5 are concentric circles.
The straight-line groove 6 is four, and four straight-line grooves 6 are distributed in gases at high pressure gas film behavior face A and outer ring portion 3.
Four upward stomatas 7 are evenly equipped with the gases at high pressure gas film behavior face A.
The foregoing is only a preferred embodiment of the present invention, these embodiments are all based on the present invention Different implementations under general idea, and protection scope of the present invention is not limited thereto, it is any to be familiar with the art Technical staff the invention discloses technical scope in, the change or replacement that can be readily occurred in, should all cover the present invention Within protection domain.Therefore, protection scope of the present invention should be defined by the protection domain of claims.

Claims (4)

1. a kind of plane air-bearing with air drain, including：Bearing air supporting part (1), it is characterised in that the bearing air supporting portion The top surface of (1) is divided to be set to gases at high pressure gas film behavior face (A) and damping area (B), the damping area (B) is bearing air supporting part (1) center of circle part (2) of top surface and outer ring portion (3), gases at high pressure gas film behavior face (A) are arranged on center of circle part (2) and outer Between loop section (3), inner groove (4), gases at high pressure gas are provided between gases at high pressure gas film behavior face (A) and center of circle part (2) Outer groove (5) is provided between film formation face (A) and outer ring portion (3), the inner end of straight-line groove (6) is connected with inner groove (4), directly The stage casing of wire casing (6) is connected with outer groove (5), and the edge of bearing air supporting part (1), high pressure are led in the outer end of straight-line groove (6) Gas gas film behavior face (A) is provided with upward stomata (7).
2. the plane air-bearing according to claim 1 with air drain, it is characterised in that the inner groove (4) and outer shroud Groove (5) is concentric circles.
3. the plane air-bearing according to claim 1 with air drain, it is characterised in that the straight-line groove (6) is four, Four straight-line grooves (6) are distributed on gases at high pressure gas film behavior face (A) and outer ring portion (3).
4. the plane air-bearing according to claim 1 with air drain, it is characterised in that the gases at high pressure gas film behavior Four upward stomatas (7) are evenly equipped with face (A).
CN201710564930.3A 2017-07-12 2017-07-12 Plane air bearing with air groove Active CN107269701B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710564930.3A CN107269701B (en) 2017-07-12 2017-07-12 Plane air bearing with air groove

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710564930.3A CN107269701B (en) 2017-07-12 2017-07-12 Plane air bearing with air groove

Publications (2)

Publication Number Publication Date
CN107269701A true CN107269701A (en) 2017-10-20
CN107269701B CN107269701B (en) 2023-06-16

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CN201710564930.3A Active CN107269701B (en) 2017-07-12 2017-07-12 Plane air bearing with air groove

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109765002A (en) * 2018-12-11 2019-05-17 中国航空工业集团公司北京长城计量测试技术研究所 A kind of Combined static-pressure air-bearing supporting device
CN110617272A (en) * 2019-09-27 2019-12-27 广东工业大学 Air bearing

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EP0212277A1 (en) * 1985-07-26 1987-03-04 Compact Spindle Bearing Corporation Improved gas bearing
JP2004330384A (en) * 2003-05-12 2004-11-25 Canon Inc Rotary main shaft device and working device
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JP2007092974A (en) * 2005-09-30 2007-04-12 Psc Kk Thrust gas bearing mechanism
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JP2016148455A (en) * 2016-04-13 2016-08-18 オイレス工業株式会社 Static pressure gas bearing and linear motion guide device using the same
CN206845691U (en) * 2017-07-12 2018-01-05 哈尔滨工业大学 A kind of plane air-bearing with air drain

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109765002A (en) * 2018-12-11 2019-05-17 中国航空工业集团公司北京长城计量测试技术研究所 A kind of Combined static-pressure air-bearing supporting device
CN109765002B (en) * 2018-12-11 2021-09-03 中国航空工业集团公司北京长城计量测试技术研究所 Combined static pressure air bearing supporting mechanism
CN110617272A (en) * 2019-09-27 2019-12-27 广东工业大学 Air bearing

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