CN101825141B - Friction-free air floating guide rail for long distance - Google Patents
Friction-free air floating guide rail for long distance Download PDFInfo
- Publication number
- CN101825141B CN101825141B CN2010101659732A CN201010165973A CN101825141B CN 101825141 B CN101825141 B CN 101825141B CN 2010101659732 A CN2010101659732 A CN 2010101659732A CN 201010165973 A CN201010165973 A CN 201010165973A CN 101825141 B CN101825141 B CN 101825141B
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- Prior art keywords
- air
- supporting cover
- air supporting
- air floating
- guide rail
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- 238000007667 floating Methods 0.000 title claims abstract description 34
- 230000008093 supporting effect Effects 0.000 claims description 63
- 210000000621 bronchi Anatomy 0.000 claims description 12
- 238000009434 installation Methods 0.000 abstract description 6
- 238000005452 bending Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 5
- 238000003754 machining Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
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- Magnetic Bearings And Hydrostatic Bearings (AREA)
- Bearings For Parts Moving Linearly (AREA)
Abstract
The invention relates to a friction-free air floating guide rail for long distance, which comprises an air floating sleeve and an air floating shaft; the air floating sleeve is sleeved on the air floating shaft; the air floating sleeve comprises a left air floating sleeve and a right air floating sleeve, the left air floating sleeve is sleeved on the left side of the air floating shaft, and the right air floating sleeve is sleeved on the right side of the air floating shaft; the middle part of the air floating shaft is provided with a connecting seat, the connecting seat is connected with a bearing guiding piece, and the bearing guiding piece follows up a movement piece; an air flowing device also comprises a long-distance linear guide rail, a main slider is arranged on the long-distance linear guide rail in a sliding way, and the main slider is fixedly connected with the left and the right air floating sleeves; and a main air pipe is connected with the main slider, the main air pipe is communicated with a left branch air pipe and a right branch air pipe, the left branch air pipe is connected with the left air floating sleeve, and the right branch air pipe is connected with the right air floating sleeve. The friction-free air floating guide rail for long distance reduces the coaxial processing precision requirement, the bending rigidity requirement, and the cost, improves the reliability and the maintainability, and facilitates transportation, installation and use.
Description
Technical field
The present invention relates to a kind of device of realizing long distance nothing friction linear rail.
Background technique
Line slideway is used for the straight reciprocating motion occasion, has the nominal load higher than linear bearing, can bear certain moment of torsion simultaneously, can realize high-precision rectilinear motion in the situation of high capacity.The effect of linear motion guide rail is to be used for supporting and the guided-moving parts, does linear reciprocating motion by given direction.Decide according to pressing friction character, linear motion guide rail can be divided into kinds such as sliding friction guide rail, rolling friction guide rail, elastic-friction guide rail, fluid friction guide rail.When movement parts during along the guide moving linearly, the guide rail on the guide plays a part to support and guiding, i.e. support motion spare and guarantee that movement parts under the effect of external force (weight of load and movement parts itself), carries out rectilinear motion along given direction.
Air-float guide rail has characteristics such as surface friction drag is little, kinematic accuracy is high, cleanliness without any pollution, has obtained in recent years using widely in surveying instrument, precision optical machinery.Briefly, air-float guide rail is made up of the gentle empty boasting of air-bearing shafts, and the air gap between air supporting cover and the air-bearing shafts requires to be micron order, so the axiality requirement on machining accuracy of air-bearing shafts is very high.On the other hand, owing to be subjected to Action of Gravity Field, very high to the bending stiffness requirement of air-bearing shafts material.Along with the increase of movement parts displacement distance, the length of air-bearing shafts increases, because air-bearing shafts is a slender rod piece, guarantee the gap between air-bearing shafts length total length and the air supporting cover, and difficulty of processing is very big.Therefore, can be applied in length almost can't process apart from occasion therapeutic method to keep the adverse qi flowing downward floating axle.
Be 200710035021.7 " installation method of ultralong air-float guide rail and device " such as application number, in order to realize ultralong air-float guide rail, need many air-float guide rails are connected, assurance seam precision and a kind of installation method and the device that propose.This scheme realizes very difficult, is not easy to installation, use and maintenance.
Summary of the invention
Existing air-bearing shafts closes at long distance field that the coaxality requirement on machining accuracy is very high in order to overcome, flexural rigidity require very high, cost is high, the deficiency of reliability and maintainable difference, the invention provides a kind ofly to reduce the coaxality requirement on machining accuracy, reduce the friction-free air floating guide rail that is used for the length distance that flexural rigidity required, reduced cost, improves reliability and maintainability and is convenient to transportation, installation and use.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of friction-free air floating guide rail for long distance, comprise air supporting cover and air-bearing shafts, described air supporting cover is sleeved on the described air-bearing shafts, described air supporting cover comprises left air supporting cover and right air supporting cover, described left air supporting cover is sleeved on the left side of described air-bearing shafts, described right air supporting cover is sleeved on the right side of described air-bearing shafts, Connection Block is installed at described air-bearing shafts middle part, described Connection Block connects guide, described guide and movement parts are servo-actuated, described air-floating apparatus also comprises long apart from line slideway, and described length is apart from master slider being installed slidably, described master slider and left air supporting cover on the line slideway, right air supporting cover is fixedly connected with; Main tracheae is connected with master slider, and described main tracheae is communicated with left bronchus, right bronchus, and described left bronchus is connected with described left air supporting cover, and described right bronchus is connected with described right air supporting cover.
Further, described master slider is fixedlyed connected with the leading screw slide block, and described leading screw slide block and leading screw are slidingly connected, and described leading screw is installed on the leading screw seat, and described leading screw is connected with motor.
Again further, the middle part of described air-bearing shafts is fixedly connected with guide by mount pad.
Further, described left air supporting cover, right air supporting cover are fixedly connected with by Connection Block with described straight-line guide rail slide block,
Described friction-free air floating guide rail comprises that also holding guiding element in order to judgement departs from the position transducer that whether reaches setting value in the middle of the left and right sides air supporting cover, and described position transducer is installed between connecting base 4 overlaps with left air supporting cover, right air supporting.
Described position transducer is Hall transducer and permanent magnet, and described Hall transducer is installed in described left air supporting cover and right air supporting puts, and described permanent magnet is installed on the connecting base.Certainly, also can adopt other position sensors or other non-contact type approach switch such as photoelectric sensor.Described position sensor is installed to be needed to guarantee no-output lead on the guide, thereby can not introduce additional force.
The basic fundamental thinking that the present invention adopts is: utilize conventional line slideway technology, and the precision of line slideway when guaranteeing grand movement, in conjunction with air-float guide rail technology among a small circle, the no friction of realization guide rail movement.And by ACTIVE CONTROL generic linear guide rail slide block motion, thereby follow the guide motion, when guaranteeing the guide motion all the time in the air-float guide rail scope, thereby realize the nothing friction rectilinear motion of long distance.
According to the guide position that non-contact position sensor detects, the ACTIVE CONTROL ball-screw drives the master slider motion, guarantees that the air supporting guide is positioned near the air supporting cover center, the left and right sides.So just can guarantee to hold guiding element and not have friction apart from remaining under the situation of movement long.Described slide block control module can also move by all kinds of usual manner control such as Timing Belt, belt or steel wire rope slide block except using ball-screw.
Beneficial effect of the present invention is mainly manifested in: extend air-float guide rail rectilinear motion distance by ACTIVE CONTROL, reduce cost, improve reliability and maintainability and be convenient to transportation, installation and maintenance.Realize long distance nothing friction linear rail function.
Description of drawings
Fig. 1 is the structural drawing that is used for the friction-free air floating guide rail of long distance of the present invention.
Embodiment
Below in conjunction with accompanying drawing the present invention is further described.
With reference to Fig. 1, a kind of friction-free air floating guide rail for long distance, comprise air supporting cover 2 and air-bearing shafts 3, described air supporting cover 2 is sleeved on the described air-bearing shafts 3, described air supporting cover comprises left air supporting cover and right air supporting cover, described left air supporting cover is sleeved on the left side of described air-bearing shafts 3, described right air supporting cover is sleeved on the right side of described air-bearing shafts 3, Connection Block 4 is installed at described air-bearing shafts 3 middle parts, described Connection Block 4 connects guide 1, and described guide 1 is servo-actuated with movement parts, and described air-floating apparatus also comprises long apart from line slideway 5, described length is apart from master slider 6 being installed slidably, described master slider 6 and left air supporting cover on the line slideway 5, right air supporting cover is fixedly connected with; Main tracheae 7 is connected with slide block 6, and described main tracheae 7 is communicated with left bronchus 9, right bronchus 8, and described left bronchus 9 is connected with described left air supporting cover, and described right bronchus 8 is connected with described right air supporting cover.
Described master slider 6 is fixedlyed connected with leading screw slide block 16, and described leading screw slide block 16 is slidingly connected with leading screw 15, and described leading screw slide block 16 positions are subjected to leading screw 15 controls, and described leading screw 15 is installed on the leading screw seat 14, and described leading screw 15 is connected with motor 13.
Described left air supporting cover, right air supporting cover are connected and installed respectively seat 10, and described mount pad 10 is fixedly connected with described slide block 6.
Described friction-free air floating guide rail comprises that also holding guiding element in order to judgement departs from the position transducer that whether reaches setting value in the middle of the left and right sides air supporting cover, and described position transducer is installed between connecting base 4 overlaps with left air supporting cover, right air supporting.
Described position transducer is Hall transducer 12 and permanent magnet 17, and described Hall transducer 12 is installed in described left air supporting cover and right air supporting puts, and described permanent magnet 17 is installed on the connecting base 4.Certainly, also can adopt other position sensors or other non-contact type approach switch such as photoelectric sensor.
In the present embodiment, when guide 1 along with the direction short-distance movement of air-bearing shafts 3 axially parallels the time, it is axially servo-actuated on air supporting cover 2 to drag immediately air-bearing shafts 3.When the position transducer of a certain direction detect the air-bearing shafts center near after, ACTIVE CONTROL motor 13 moves by air-bearing shafts 3 same direction of movement by leading screw 15 control leading screw slide blocks 16, thereby guarantees the neutral position of connecting base 4 between two air supportings covers.For the occasion of long distance moving, move by active drive mechanism band movable slider, because the characteristic of frictionless motion between air supporting cover and the air-bearing shafts, the moving process of slide block does not impact locus and the motion of air-bearing shafts and guide.There is not the friction linear rail so realize long distance dexterously.Simultaneously because air-floating apparatus is overlapped air feed by air supporting, and guide is fixed on the air-bearing shafts, and the crooked resistance that produces of tracheae can not be delivered to air-bearing shafts when therefore device was mobile, thereby can not produce to guide the impact of additional force yet.
Claims (4)
1. friction-free air floating guide rail that is used for long distance, comprise air supporting cover and air-bearing shafts, described air supporting cover is sleeved on the described air-bearing shafts, it is characterized in that: described air supporting cover comprises left air supporting cover and right air supporting cover, described left air supporting cover is sleeved on the left side of described air-bearing shafts, described right air supporting cover is sleeved on the right side of described air-bearing shafts, described air-bearing shafts middle part is fixedly connected with guide by Connection Block, described guide and movement parts are servo-actuated, described air-float guide rail also comprises long apart from line slideway, described length is apart from master slider being installed slidably, described master slider and left air supporting cover on the line slideway, right air supporting cover is fixedly connected with; Main tracheae is connected with master slider, described main tracheae is communicated with left bronchus, right bronchus, described left bronchus is connected with described left air supporting cover, described right bronchus is connected with described right air supporting cover, the guide that also comprises described friction-free air floating guide rail judging departs from the position sensor that whether reaches setting value in the middle of the left and right air supporting cover, and described position sensor is installed between Connection Block overlaps with left air supporting cover, right air supporting.
2. the friction-free air floating guide rail that is used for long distance as claimed in claim 1, it is characterized in that: described master slider is fixedlyed connected with the leading screw slide block, and described leading screw slide block and leading screw are slidingly connected, and described leading screw is installed on the leading screw seat, and described leading screw is connected with motor.
3. the friction-free air floating guide rail for long distance as claimed in claim 1 or 2, it is characterized in that: described left air supporting cover, right air supporting cover are fixedly connected with by mount pad with described master slider.
4. the friction-free air floating guide rail that is used for long distance as claimed in claim 1 or 2, it is characterized in that: described position transducer is Hall transducer and permanent magnet, described Hall transducer is installed in described left air supporting cover and right air supporting puts, and described permanent magnet is installed on the connecting base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101659732A CN101825141B (en) | 2010-05-07 | 2010-05-07 | Friction-free air floating guide rail for long distance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101659732A CN101825141B (en) | 2010-05-07 | 2010-05-07 | Friction-free air floating guide rail for long distance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101825141A CN101825141A (en) | 2010-09-08 |
| CN101825141B true CN101825141B (en) | 2011-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101659732A Expired - Fee Related CN101825141B (en) | 2010-05-07 | 2010-05-07 | Friction-free air floating guide rail for long distance |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| TWI461682B (en) * | 2012-12-25 | 2014-11-21 | Metal Ind Res & Dev Ct | Device for measuring the friction coefficient |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH076542B2 (en) * | 1987-11-30 | 1995-01-30 | 松下電器産業株式会社 | Static pressure slide device |
| CN2472212Y (en) * | 2001-03-19 | 2002-01-16 | 中国航空工业总公司第三○三研究所 | Electromagnetic force adder |
| CN201407984Y (en) * | 2009-05-05 | 2010-02-17 | 西安威而信精密仪器有限公司 | Movable column type profile meter |
| CN201739350U (en) * | 2010-05-07 | 2011-02-09 | 浙江工业大学 | Non-friction air-floating guide rail used at long distance |
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- 2010-05-07 CN CN2010101659732A patent/CN101825141B/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN101825141A (en) | 2010-09-08 |
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