CN101813128B - Frictionless air flotation device used for following moving trace of suspension centre in extra-long distance - Google Patents
Frictionless air flotation device used for following moving trace of suspension centre in extra-long distance Download PDFInfo
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- CN101813128B CN101813128B CN2010101655360A CN201010165536A CN101813128B CN 101813128 B CN101813128 B CN 101813128B CN 2010101655360 A CN2010101655360 A CN 2010101655360A CN 201010165536 A CN201010165536 A CN 201010165536A CN 101813128 B CN101813128 B CN 101813128B
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- air
- air flotation
- long distance
- bearing shafts
- supporting cover
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Abstract
The invention provides a frictionless air flotation device used for following a moving trace of a suspension centre in an extra-long distance. The frictionless air flotation device comprises an air flotation shaft and an air flotation sleeve, wherein the air flotation sleeve is sleeved on the air flotation shaft; the air flotation sleeve is connected with a suspension rope; and the suspension rope moves together with a moving piece. The frictionless air flotation device also comprises a guide rail, wherein a sliding block is moveably arranged on the guide rail; and the sliding block is fixedly connected with the air flotation shaft. The frictionless air flotation device used for following the moving trace of the suspension centre in the extra-long distance has the advantages of lowering requirements on coaxiality machining accuracy, lowering the requirements on flexural rigidity, reducing cost, improving the reliability and maintainability, along with convenient transportation, installation and use.
Description
Technical field
The present invention relates to the friction-free air floating device, the straight-line friction-free air floating device of especially a kind of realization.
Background technique
For realization-movement parts moves in one direction, generally all relate to complicated guide rail or slider designs.Realizing that frictionless motion then adopts the air supporting implementation usually, is to disclose a kind of linear drive that contains line motor that utilizes air bearing structure to realize high-precision motion in " air bearing structure and use the linear drive of air bearing structure " of CN200510085338.2 as number of patent application.Number of patent application be CN200610156698.1's " pneumatic bearing and installation method thereof and linear drive " with pneumatic bearing also announced a kind of pneumatic bearing of utilizing, on guide rail, realize the design of no friction level direction sideslip.Though above-mentioned two patents all relate to the design of linear drive, yet they all pay attention to utilizing the design of the moving control of magnetic air-bearing, do not relate to the servo-actuated design of the long distance of right-movement parts.
Except that above-mentioned design, production technology development along with pneumatic bearing, pneumatic bearing can be born very high radial load, it is applied in make it not have frictional movement with the realization substantially horizontal with movement parts in the axial motion field on the common air-bearing shafts, has also obtained very wide application.Scheme as shown in Figure 1 is exactly a kind of: movement parts 1 is lain on air supporting cover 2 (pneumatic bearing), air supporting cover 2 directly is enclosed within on the air-bearing shafts 3, when movement parts 1 when air-bearing shafts 3 axially moves, requirement air supporting cover 2 pursuit movement spare 1 is at any time done same motion, and do not have friction at air supporting cover 2 and 3 of air-bearing shafts, thereby avoid because of the influence of friction to movement parts 1 generation.This type systematic has very important meaning in high-precision motion control and fields of measurement.
But for guaranteeing the bearing capacity of pneumatic bearing, the air gap between air supporting cover and the air-bearing shafts requires to be micron order, so the coaxality requirement on machining accuracy of air-bearing shafts is very high.On the other hand, owing to be subjected to the action of gravity of movement parts, air-bearing shafts, air supporting cover etc., very high to the flexural rigidity 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 under the extra long distance occasion air-bearing shafts almost can't process.This scheme can realize short-range frictionless motion, almost can't realize for long distance even over distance frictionless motion.Even but the high-precision air-bearing shafts of processing super long distance also can difficultly transport and installation, and be difficult to safeguard, necessary all replacings in case air-bearing shafts goes wrong.
Summary of the invention
Existing air-bearing shafts is very high at extra long distance occasion coaxality requirement on machining accuracy 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 device that extra long distance is followed the suspension centre movement locus that is used for 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 ofly be used for the friction-free air floating device that extra long distance is followed the suspension centre movement locus, comprise the gentle empty boasting of air-bearing shafts, described air supporting cover is sleeved on the described air-bearing shafts, described air supporting cover is connected with hanging rope, described hanging rope and described movement parts servo-actuated, described friction-free air floating device also comprises guide rail, and slide block is installed on the described guide rail slidably, and described slide block is fixedlyed connected with described air-bearing shafts.
Further, the two ends of described air-bearing shafts are set with fitting seat, and described fitting seat is fixedlyed connected with described slide block.
Further again, described friction-free air floating device comprises that also described position transducer is installed between fitting seat and the air supporting cover in order to judge that the air supporting cover departs from the position transducer whether the air-bearing shafts neutral position reaches setting value.
Described position transducer is Hall transducer and permanent magnet, and described Hall transducer is installed on the described fitting seat, and described permanent magnet is installed in the both sides of air supporting cover.Certainly, also can adopt other non-contact type approach switch such as photoelectric sensor.
The air supporting cover does not have the friction servo-actuated according to the movement parts hoisting point position, according to detecting air supporting cover position, driving sources such as ACTIVE CONTROL motor move by ball screw, the slide block of all kinds of usual manner control such as band, belt or wire rope synchronously, guarantee that the air supporting cover is positioned at the air-bearing shafts central position.So just can guarantee that air supporting is enclosed within to remain under the extra long distance situation of movement and does not have friction.
Beneficial effect of the present invention mainly shows: reduction coaxality requirement on machining accuracy, reduction flexural rigidity require, reduce cost, improve reliability and maintainability and be convenient to transportation, installation and use.So just can guarantee that movement parts remains the nothing friction under the extra long distance situation of movement.
Description of drawings
Fig. 1 is the schematic representation of existing air-bearing shafts follow-up unit.
Fig. 2 is the structural drawing that extra long distance is followed the friction-free air floating device of suspension centre movement locus that is used for of the present invention.
Embodiment
Below in conjunction with accompanying drawing the present invention is further described.
With reference to Fig. 2, a kind ofly be used for the friction-free air floating device that extra long distance is followed the suspension centre movement locus, comprise air-bearing shafts 3 gentle empty boastings 2, described air supporting cover 2 is sleeved on the described air-bearing shafts 3,, described air supporting cover 2 is connected with hanging rope, described hanging rope and 1 servo-actuated of described movement parts, described friction-free air floating device also comprises guide rail 4, on the described guide rail 4 slide block 5 is installed slidably, and described slide block 5 is fixedlyed connected with described air-bearing shafts 3.
The two ends of described air-bearing shafts 3 are set with fitting seat 6, and described fitting seat 6 is fixedlyed connected with described slide block 5.
Described friction-free air floating device comprises that also described position transducer is installed between fitting seat and the air supporting cover in order to judge that the air supporting cover departs from the position transducer whether the air-bearing shafts neutral position reaches setting value.
Described position transducer is Hall transducer 7 and permanent magnet 8, and described Hall transducer 7 is installed on the described fitting seat, and described permanent magnet 8 is installed in the both sides of air supporting cover.
Circle can be adopted in the cross section of described air-bearing shafts, also can adopt non-circular cross-section, such as rectangle etc., adopts the non-circular cross-section air-bearing shafts can prevent that axle from rotating.
In the present embodiment, when move with the direction short distance of air-bearing shafts 3 parallel to an axiss on movement parts 1 edge, drag air supporting cover 2 axially servo-actuated on air-bearing shafts 3 immediately, when the position transducer of a certain direction detect the air supporting cover near signal after, driving sources such as ACTIVE CONTROL motor, move by air supporting cover same direction of movement, thereby guarantee that the air supporting cover is positioned at the air-bearing shafts central position by ball screw, the slide block of all kinds of usual manner control such as band, belt or wire rope synchronously.
Occasion for long distance moves at first drives slide block by active drive mechanism and moves, because the characteristic of frictionless motion between air supporting cover and the air-bearing shafts, the moving process of slide block does not impact the spatial position and the motion of air supporting cover and movement parts.So will axially grow the no frictional movement grafting of distance dexterously to the slide block guide rail assembly of general precision, can realize that air supporting is enclosed within the utmost point floating axle of losing heart and moves with the big displacement of movement parts.
Because microcontroller on the powerful advantages of real time signal processing and computing function, can be realized the movement parts under the certain speed is carried out good following.
Claims (4)
1. one kind is used for the friction-free air floating device that extra long distance is followed the suspension centre movement locus, comprise the gentle empty boasting of air-bearing shafts, described air supporting cover is sleeved on the described air-bearing shafts, described air supporting cover is connected with hanging rope, described hanging rope and described movement parts servo-actuated, it is characterized in that: described air-floating apparatus also comprises guide rail, and slide block is installed on the described guide rail slidably, and described slide block is fixedlyed connected with described air-bearing shafts.
2. as claimed in claim 1ly be used for the friction-free air floating device that extra long distance is followed the suspension centre movement locus, it is characterized in that: the two ends of described air-bearing shafts are set with fitting seat, and described fitting seat is fixedlyed connected with described slide block.
3. as claimed in claim 2ly be used for the friction-free air floating device that extra long distance is followed the suspension centre movement locus, it is characterized in that: described air-floating apparatus comprises that also described position transducer is installed between fitting seat and the air supporting cover in order to judge that the air supporting cover departs from the position transducer whether the air-bearing shafts neutral position reaches setting value.
4. as claimed in claim 3ly be used for the friction-free air floating device that extra long distance is followed the suspension centre movement locus, it is characterized in that: described position transducer is Hall transducer and permanent magnet, described Hall transducer is installed on the described fitting seat, and described permanent magnet is installed in the both sides of air supporting cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101655360A CN101813128B (en) | 2010-05-07 | 2010-05-07 | Frictionless air flotation device used for following moving trace of suspension centre in extra-long distance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101655360A CN101813128B (en) | 2010-05-07 | 2010-05-07 | Frictionless air flotation device used for following moving trace of suspension centre in extra-long distance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101813128A CN101813128A (en) | 2010-08-25 |
| CN101813128B true CN101813128B (en) | 2011-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101655360A Expired - Fee Related CN101813128B (en) | 2010-05-07 | 2010-05-07 | Frictionless air flotation device used for following moving trace of suspension centre in extra-long distance |
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| CN (1) | CN101813128B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6540402B1 (en) * | 2000-02-08 | 2003-04-01 | Fitel Usa Corporation | Hydrostatic guidance of moving lathe carriage |
| CN1249797C (en) * | 2000-04-04 | 2006-04-05 | Esec公司 | Linear conductor with air bearing |
| CN201679861U (en) * | 2010-05-07 | 2010-12-22 | 浙江工业大学 | Frictionless air flotation device used for following motion trail of lifting point over ultra-long distance |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4328165B2 (en) * | 2003-09-29 | 2009-09-09 | 株式会社ダイヘン | Slide device |
-
2010
- 2010-05-07 CN CN2010101655360A patent/CN101813128B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6540402B1 (en) * | 2000-02-08 | 2003-04-01 | Fitel Usa Corporation | Hydrostatic guidance of moving lathe carriage |
| CN1249797C (en) * | 2000-04-04 | 2006-04-05 | Esec公司 | Linear conductor with air bearing |
| CN201679861U (en) * | 2010-05-07 | 2010-12-22 | 浙江工业大学 | Frictionless air flotation device used for following motion trail of lifting point over ultra-long distance |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2005-106097A 2005.04.21 |
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| CN101813128A (en) | 2010-08-25 |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110831 Termination date: 20180507 |