CN103016441A - Air flotation cylinder for forming stable air film by microporous material - Google Patents
Air flotation cylinder for forming stable air film by microporous material Download PDFInfo
- Publication number
- CN103016441A CN103016441A CN2012105932840A CN201210593284A CN103016441A CN 103016441 A CN103016441 A CN 103016441A CN 2012105932840 A CN2012105932840 A CN 2012105932840A CN 201210593284 A CN201210593284 A CN 201210593284A CN 103016441 A CN103016441 A CN 103016441A
- Authority
- CN
- China
- Prior art keywords
- piston
- air
- cylinder barrel
- cylinder
- groove
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Abstract
The invention discloses an air flotation cylinder for forming stable air film by a microporous material. The air flotation cylinder comprises a cylinder barrel, a piston, an air bearing and a piston rod, wherein the piston is fixedly connected with one end of the piston rod; a base is installed at one end of the cylinder barrel; an end cover is installed at the other end of the cylinder barrel; an air inlet is arranged on the base; an inner wall of the cylinder barrel is connected with an outer ring of the air bearing; the piston rod passes through an inner ring of the air bearing and the end cover; a rod cavity of the cylinder barrel is provided with an air outlet; the piston comprises a piston sleeve and a microporous material layer; a section of boss is arranged on one side (of the piston sleeve) close to a high pressure cavity; a gap is arranged between the boss and the cylinder barrel; the microporous material layer is sleeved over an outer surface of the other side of the boss to form a complete cylindrical piston; an air inlet is arranged on an inner wall of the piston bush and communicated with the high pressure cavity; the microporous material layer is provided with a groove on the air inlet of the piston bush and along axial direction of the piston; and an annular groove is axially distributed on an inner wall of the microporous material layer. This air flotation cylinder is good in stability and high in control precision.
Description
Technical field
The present invention relates to a kind of floating cylinder.
Background technique
Common cylinder adopts mechanical seal usually, has contact friction force between cylinder barrel and the piston.
Traditional low rubbing cylinder relies on and improves machining accuracy, adopts special low-friction material or grease lubrication to reduce friction, but has processing difficulties, cost is high, difficult in maintenance and the life-span is short defective; Perhaps by improving seal form, reduce frictional force, be applied to cylinder such as the special sealing technique of German FESTO company's employing, adopt the one-way sealing seal, have very little resistance of taxing.Japan SMC company adopts ball guide sleeve technology and Gap Sealing Technology, this low rubbing cylinder at the uniform velocity property, high low pressure friction, tell and high frequency aspect all have breakthrough, yet there are too some defectives, such as to Load Sensitive radially, complex structure, manufacturing difficulty are large, expensive.
For satisfying the requirement of the aspects such as ultraprecise constant force output control, minute-pressure action control, the gas lubrication technology is realizing that zero friction cylinder is applied.As number of patent application be 201120080863.6 " a kind of with air-bearing without the friction cylinder " just announced a kind of according to the air supporting principle design without the friction cylinder, leave minimum gap between cylinder barrel and the piston, the throttle orifice of even cloth is set at piston radial, piston rod by hollow and flexible pipe are the piston air feed in the cylinder, and connect so that can bear certain radial load and seizure of piston not occur in cylinder without the friction cylinder by ball pivot.But the plenum system by hollow piston rod and flexible pipe is complicated, assembling is loaded down with trivial details, easy care not, afterwards to being optimized without the friction cylinder, pressurized air in employing cylinder self cavity volume is as oiling agent, gas is introduced in the gap, make piston in cylinder, be in complete state of suspension, piston do not contact each other with cylinder barrel, thereby eliminated the frictional force between the piston and cylinder barrel in the air cylinder structure.But, no matter adopt which kind of plenum system, owing to leaving the gap between piston and the cylinder barrel, there is very large draught head between the hyperbaric chamber of cylinder and the low-pressure cavity, thereby between the gap, can form air pressure stream, directly affect the air pressure film that piston forms in the gap by throttle orifice, on the other hand, the film formed prerequisite of gas is to have certain draught head in the gap, and raise near the gap air pressure of hyperbaric chamber one end, cause air-film thickness, pressure distribution inhomogeneous, this stability, precision, bearing capacity without the friction cylinder has all been caused impact.
Summary of the invention
In order to overcome the lower deficiency of less stable, control accuracy of existing floating cylinder, the invention provides a kind ofly have good stability, employing poromerics that control accuracy is higher form stablize air film air supporting without the cylinder that rubs.
The technical solution adopted for the present invention to solve the technical problems is:
A kind ofly adopt poromerics to form to stablize the air supporting of air film without the friction cylinder, comprise cylinder barrel, piston, air-bearing and piston rod, described piston is fixedly connected with piston rod one end, described cylinder barrel one end mounting base, the other end of described cylinder barrel is installed end cap, described base is provided with gas source air inlet, the inwall of described cylinder barrel is connected with the air-bearing outer ring, described piston rod passes inner ring and the end cap of air-bearing, the rod chamber of cylinder barrel is provided with the air outlet, described piston comprises piston sleeve and poromerics layer, described piston sleeve has one section boss near hyperbaric chamber one side, leave the gap between described boss and cylinder barrel, the outer surface that described poromerics layer is sleeved on the boss opposite side forms complete cylindrical piston, on the described piston sleeve inwall inlet hole is arranged, and described inlet hole communicates with hyperbaric chamber, described poromerics layer has one along the groove of piston axial direction at the enterprising pore of piston sleeve place, and annular groove and axially uniform is arranged on the inwall of described poromerics layer.
Further, described piston sleeve boss external cylindrical surface place is provided with a circle groove, radially beats blind hole from the groove top, gets through the hole along the piston jacket wall to the rod chamber direction again and forms pressure relief groove, and described pressure relief groove groove is provided with gradient near rodless cavity one end.
Beneficial effect of the present invention is mainly manifested in: effectively avoid the high low pressure air-flow to air film exert an influence, control accuracy is higher.
Description of drawings
Fig. 1 a kind ofly adopts poromerics to form to stablize the air supporting of air film without the schematic diagram of friction cylinder.
Fig. 2 is the structural drawing of piston.
Fig. 3 is the A-A sectional view of Fig. 2.
Fig. 4 is the B-B sectional view of Fig. 2.
Embodiment
The invention will be further described below in conjunction with accompanying drawing.
With reference to Fig. 1～Fig. 4, a kind ofly adopt poromerics to form to stablize the air supporting of air film without the friction cylinder, comprise cylinder barrel 3, piston, air-bearing 4 and piston rod 1, described piston is fixedly connected with piston rod 1 one ends, described cylinder barrel 3 one end mounting base 11, the other end of described cylinder barrel 3 is installed end cap 2, described base 11 is provided with gas source air inlet 12, the inwall of described cylinder barrel 3 is connected with air-bearing 4 outer rings, described piston rod 1 passes inner ring and the end cap 2 of air-bearing 4, and the rod chamber of cylinder barrel 3 is provided with air outlet 16.
Described piston is comprised of poromerics 5 and piston sleeve 8, described piston sleeve 8 has one section boss near hyperbaric chamber one side, leave minimum gap between described boss and cylinder barrel, described poromerics cover 5 outer surfaces that are contained in the boss opposite side form complete cylindrical piston, on described piston sleeve 8 inwalls inlet hole 13 is arranged, described inlet hole communicates with hyperbaric chamber, described poromerics 5 has one along the groove of piston axial direction at the enterprising pore of piston sleeve place, and annular groove 6 and axially uniform is arranged on the described poromerics inwall.
Described piston sleeve boss external cylindrical surface place is provided with a circle groove 10, radially beats blind hole from the groove top, gets through hole 9 along the piston jacket wall to the rod chamber direction again and forms pressure relief groove, and described pressure relief groove groove is provided with gradient near rodless cavity one end.
Claims (2)
1. an air supporting of adopting poromerics to form to stablize air film is without the friction cylinder, comprise cylinder barrel, piston, air-bearing and piston rod, described piston is fixedly connected with piston rod one end, described cylinder barrel one end mounting base, the other end of described cylinder barrel is installed end cap, and described base is provided with gas source air inlet, the inwall of described cylinder barrel is connected with the air-bearing outer ring, described piston rod passes inner ring and the end cap of air-bearing, and the rod chamber of cylinder barrel is provided with the air outlet, it is characterized in that:
Described piston comprises piston sleeve and poromerics layer, described piston sleeve has one section boss near hyperbaric chamber one side, leave the gap between described boss and cylinder barrel, the outer surface that described poromerics layer is sleeved on the boss opposite side forms complete cylindrical piston, on the described piston sleeve inwall inlet hole is arranged, described inlet hole communicates with hyperbaric chamber, described poromerics layer has one along the groove of piston axial direction at the enterprising pore of piston sleeve place, and annular groove and axially uniform is arranged on the inwall of described poromerics layer.
2. employing poromerics as claimed in claim 1 forms the air supporting of stablizing air film without the friction cylinder, it is characterized in that: described piston sleeve boss external cylindrical surface place is provided with a circle groove, radially beat blind hole from the groove top, get through the hole along the piston jacket wall to the rod chamber direction again and form pressure relief groove, described pressure relief groove groove is provided with gradient near rodless cavity one end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210593284.0A CN103016441B (en) | 2012-12-31 | 2012-12-31 | Air flotation cylinder for forming stable air film by microporous material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210593284.0A CN103016441B (en) | 2012-12-31 | 2012-12-31 | Air flotation cylinder for forming stable air film by microporous material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103016441A true CN103016441A (en) | 2013-04-03 |
| CN103016441B CN103016441B (en) | 2015-02-18 |
Family
ID=47965409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210593284.0A Active CN103016441B (en) | 2012-12-31 | 2012-12-31 | Air flotation cylinder for forming stable air film by microporous material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103016441B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103245493A (en) * | 2013-04-10 | 2013-08-14 | 浙江工业大学 | Bending moment resistance testing device for frictionless cylinder |
| CN103508385A (en) * | 2013-10-18 | 2014-01-15 | 浙江工业大学 | Long distance and two-dimensional constant force hoisting device |
| CN103511391A (en) * | 2013-10-18 | 2014-01-15 | 浙江工业大学 | Constant force output air floating device with air storage sleeve |
| CN103523719A (en) * | 2013-10-18 | 2014-01-22 | 浙江工业大学 | Long-distance two-dimensional following constant force hoisting device |
| CN103527570A (en) * | 2013-10-23 | 2014-01-22 | 浙江工商大学 | High-precision constant force-output air floatation device |
| CN104595277A (en) * | 2014-12-29 | 2015-05-06 | 广东工业大学 | Friction-free quick-response balancing device |
| CN104806584A (en) * | 2015-04-20 | 2015-07-29 | 广东工业大学 | Frictionless quick-response balance system |
| CN113653697A (en) * | 2021-07-09 | 2021-11-16 | 湖南大学 | Zero-friction cylinder with air floatation piston independently supplying air based on porous material |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07224807A (en) * | 1994-02-10 | 1995-08-22 | Nippondenso Co Ltd | Cylinder device |
| CN2520436Y (en) * | 2002-01-23 | 2002-11-13 | 周磊 | W-inner cavity medium pressure self-compensation sealing ring |
| CN1986337A (en) * | 2006-12-02 | 2007-06-27 | 中国科学院合肥物质科学研究院 | Three-dimensional air floating platform and pneumatic gravitational compensation method |
| CN101429984A (en) * | 2008-12-01 | 2009-05-13 | 江阴强顺科技有限公司 | Hydraulic damper with excellent leak tightness |
| CN201636125U (en) * | 2010-04-07 | 2010-11-17 | 大连万讯电力仪表有限公司 | Oil-free lubricating structure of power cylinder |
| CN102155465A (en) * | 2011-03-24 | 2011-08-17 | 浙江大学 | Zero-friction air cylinder with air bearing |
| CN102374208A (en) * | 2011-11-04 | 2012-03-14 | 中国航空工业集团公司北京航空精密机械研究所 | Aerostatic bearing guiding cylinder without friction interference |
| CN203176049U (en) * | 2012-12-31 | 2013-09-04 | 浙江工业大学 | Air flotation friction-free air cylinder for adopting cellular materials to form stable air film |
-
2012
- 2012-12-31 CN CN201210593284.0A patent/CN103016441B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07224807A (en) * | 1994-02-10 | 1995-08-22 | Nippondenso Co Ltd | Cylinder device |
| CN2520436Y (en) * | 2002-01-23 | 2002-11-13 | 周磊 | W-inner cavity medium pressure self-compensation sealing ring |
| CN1986337A (en) * | 2006-12-02 | 2007-06-27 | 中国科学院合肥物质科学研究院 | Three-dimensional air floating platform and pneumatic gravitational compensation method |
| CN101429984A (en) * | 2008-12-01 | 2009-05-13 | 江阴强顺科技有限公司 | Hydraulic damper with excellent leak tightness |
| CN201636125U (en) * | 2010-04-07 | 2010-11-17 | 大连万讯电力仪表有限公司 | Oil-free lubricating structure of power cylinder |
| CN102155465A (en) * | 2011-03-24 | 2011-08-17 | 浙江大学 | Zero-friction air cylinder with air bearing |
| CN102374208A (en) * | 2011-11-04 | 2012-03-14 | 中国航空工业集团公司北京航空精密机械研究所 | Aerostatic bearing guiding cylinder without friction interference |
| CN203176049U (en) * | 2012-12-31 | 2013-09-04 | 浙江工业大学 | Air flotation friction-free air cylinder for adopting cellular materials to form stable air film |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103245493A (en) * | 2013-04-10 | 2013-08-14 | 浙江工业大学 | Bending moment resistance testing device for frictionless cylinder |
| CN103511391B (en) * | 2013-10-18 | 2015-12-30 | 浙江工业大学 | A kind of constant force with gas storage jacket exports air-floating apparatus |
| CN103511391A (en) * | 2013-10-18 | 2014-01-15 | 浙江工业大学 | Constant force output air floating device with air storage sleeve |
| CN103523719A (en) * | 2013-10-18 | 2014-01-22 | 浙江工业大学 | Long-distance two-dimensional following constant force hoisting device |
| CN103523719B (en) * | 2013-10-18 | 2015-08-05 | 浙江工业大学 | Long-distance 2 D follows constant force erecting by overhang |
| CN103508385B (en) * | 2013-10-18 | 2015-08-05 | 浙江工业大学 | A kind of long-distance 2 D constant force erecting by overhang |
| CN103508385A (en) * | 2013-10-18 | 2014-01-15 | 浙江工业大学 | Long distance and two-dimensional constant force hoisting device |
| CN103527570A (en) * | 2013-10-23 | 2014-01-22 | 浙江工商大学 | High-precision constant force-output air floatation device |
| CN104595277A (en) * | 2014-12-29 | 2015-05-06 | 广东工业大学 | Friction-free quick-response balancing device |
| CN104595277B (en) * | 2014-12-29 | 2017-01-04 | 广东工业大学 | A kind of without the quick response balance device that rubs |
| CN104806584A (en) * | 2015-04-20 | 2015-07-29 | 广东工业大学 | Frictionless quick-response balance system |
| CN104806584B (en) * | 2015-04-20 | 2017-02-01 | 广东工业大学 | Frictionless quick-response balance system |
| CN113653697A (en) * | 2021-07-09 | 2021-11-16 | 湖南大学 | Zero-friction cylinder with air floatation piston independently supplying air based on porous material |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103016441B (en) | 2015-02-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103016441B (en) | Air flotation cylinder for forming stable air film by microporous material | |
| CN103016443B (en) | A kind of gas suspension with pressure relief groove is without friction cylinder | |
| CN103016442B (en) | A kind of gas suspension do not affected by pressurized gas with spherical hinge is without friction cylinder | |
| CN103047221B (en) | Double-action gas suspension is without friction cylinder | |
| CN103016445B (en) | Air-suspending frictionless cylinder with pressure equalizing type gas unloading groove | |
| CN103016444B (en) | Air-suspending friction-free air cylinder with cylinder barrels for air supply | |
| CN102486208B (en) | Self-compensating hydrostatic journal bearing | |
| CN106369050B (en) | A kind of magnetic suspension aero dynamic bearing | |
| CN103299066B (en) | The bearing assembly of ship turbine arbor and comprise the cruising turbine of this bearing assembly | |
| CN203051293U (en) | Air-suspending frictionless cylinder with pressure-relieving groove | |
| CN103047220B (en) | Cylinder barrel air supply pressure equalizing air floatation friction-free air cylinder | |
| CN103511385B (en) | High frequency loads servo vibration hydraulic cylinder | |
| CN203176049U (en) | Air flotation friction-free air cylinder for adopting cellular materials to form stable air film | |
| CN103016529B (en) | Air floatation combination device not affected by air pipe disturbance and high-pressure gas | |
| WO2019019693A1 (en) | Porous ultrasonic bearing | |
| CN201521556U (en) | Hybrid spindle structure adopting electro-hydraulic servo valve for control | |
| CN203051294U (en) | Cylinder barrel air supply pressure-equalizing type air flotation non-friction air cylinder | |
| CN203730561U (en) | Aerostatic bearing | |
| CN100373059C (en) | Hydraulic cylinder with static pressure support guide | |
| CN203051292U (en) | Double-acting air-suspending zero-friction air cylinder | |
| JP5702094B2 (en) | Air bearing type air cylinder device | |
| CN203051295U (en) | Air-suspending frictionless air cylinder with cylinder barrel supplying air | |
| CN203176047U (en) | Air-suspending non-friction air cylinder provided with spherical hinge and not affected by high-pressure gas | |
| CN104454993B (en) | Aerostatic-pressurized thrust bearing | |
| CN204357829U (en) | Without the quick response balance device of friction |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: Hangzhou City, Zhejiang province 310014 City Zhaohui District Six Patentee after: Zhejiang University of Technology Address before: 310014 Chao Wang Road, Xiacheng City, Hangzhou, Zhejiang Province, No. 18 Patentee before: Zhejiang University of Technology |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20181220 Address after: 401120 No. 5 Shangke Road, Shuangfengqiao Street, Yubei District, Chongqing Patentee after: Chongqing Rongyu Machinery Manufacturing Co., Ltd. Address before: Hangzhou City, Zhejiang province 310014 City Zhaohui District Six Patentee before: Zhejiang University of Technology |