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
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- 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
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- Prior art keywords
- piston
- air
- cylinder barrel
- cylinder
- groove
- Prior art date
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- 239000003570 air Substances 0.000 title claims abstract description 51
- 239000012229 microporous materials Substances 0.000 title abstract 6
- 238000005188 flotation Methods 0.000 title abstract 4
- 239000010410 layers Substances 0.000 claims abstract description 12
- 239000007789 gases Substances 0.000 claims description 6
- 239000011148 porous materials Substances 0.000 claims description 3
- 101710043253 KNTC1 Proteins 0.000 description 3
- 238000005516 engineering processes Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000002950 deficient Effects 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000000034 methods Methods 0.000 description 2
- 281000014039 Festo companies 0.000 description 1
- 239000003677 Sheet moulding compound Substances 0.000 description 1
- 238000010586 diagrams Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabrics Substances 0.000 description 1
- 239000002783 friction materials Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000008041 oiling agents Substances 0.000 description 1
- 239000000725 suspensions Substances 0.000 description 1
Abstract
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)
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
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210593284.0A CN103016441B (en) | 2012-12-31 | 2012-12-31 | Air flotation cylinder for forming stable air film by microporous material |
Country Status (1)
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| CN (1) | CN103016441B (en) |
Cited By (7)
| 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 |
| CN103527570A (en) * | 2013-10-23 | 2014-01-22 | 浙江工商大学 | High-precision constant force-output air floatation device |
| CN103523719A (en) * | 2013-10-18 | 2014-01-22 | 浙江工业大学 | Long-distance two-dimensional following constant force hoisting 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 |
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| 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 |
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| 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 |
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2012
- 2012-12-31 CN CN201210593284.0A patent/CN103016441B/en active IP Right Grant
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 |
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| 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 |
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Cited By (12)
| 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 |
| 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 |
| CN103523719A (en) * | 2013-10-18 | 2014-01-22 | 浙江工业大学 | Long-distance two-dimensional following constant force hoisting device |
| 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 |
| CN103523719B (en) * | 2013-10-18 | 2015-08-05 | 浙江工业大学 | Long-distance 2 D follows constant force erecting by overhang |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103016441B (en) | 2015-02-18 |
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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 |
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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 |
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