CN101149979B - Precision rotation positioning platform based on compliant mechanism - Google Patents
Precision rotation positioning platform based on compliant mechanism Download PDFInfo
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- CN101149979B CN101149979B CN200710031074A CN200710031074A CN101149979B CN 101149979 B CN101149979 B CN 101149979B CN 200710031074 A CN200710031074 A CN 200710031074A CN 200710031074 A CN200710031074 A CN 200710031074A CN 101149979 B CN101149979 B CN 101149979B
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Abstract
The precious rotary positioning platform comprises a base, a moving platform, a guiding mechanism and two groups of driving device. The said base, moving platform and guiding mechanism are processed from a block of material and made into an integrally assembled compliance mechanism. At the two opposite sides of the base is provided respectively with a circular hole for mounting two groups of driving mechanisms which are arranged at the two opposite sides of the moving platform and staggered each other. In any one group of driving device there are two balls and a spring are provided in the said circular holes. An extending brake is fixed on the base through a fixing member. The forehead of the extending brake compresses tightly the ball which compresses tightly the spring which compresses tightly another ball which compresses tightly the moving platform. Advantage: obtained high-precision output under low-precision input, simple control and operation of platform and low cost.
Description
Technical field
The present invention relates to a kind of precision rotation positioning platform based on compliant mechanism, specifically is a kind of meticulous adjustment meek precisively positioning platform of realizing around the rotation of Z axle of angle.
Background technology
At present, rotation positioning platform all adopts motor-driven usually, perhaps worm gear and worm drive, this platform center all has an axle usually, worktable under the driving of external force around axis rotation.Because this class platform is a rigid mechanism all, has certain tolerance clearance, running accuracy generally can only reach the milliradian level.Along with the development of precision positioning technology, the bearing accuracy of rotation positioning platform there has been higher requirement, require the bearing accuracy of platform to reach the microradian level, traditional rigid rotating platform is difficult to meet the demands.And employing piezoelectric ceramics comparatively commonly used at present directly drives the method for meek precisively positioning platform, though can arrive very high bearing accuracy, involves great expense, and cost is very high, safeguards also relatively difficulty.
Summary of the invention
The objective of the invention is to provides a kind of precision rotation positioning platform based on compliant mechanism at the existing above-mentioned shortcoming of prior art.The present invention adopts submissive displacement scaling device, makes platform obtain high-precision output under the input of low precision.
For achieving the above object, the present invention has taked following technical proposals:
A kind of precision rotation positioning platform based on compliant mechanism comprises pedestal 1, motion platform 3, guiding mechanism 2 and two groups of drive units.Comprise pedestal 1, motion platform 3, guiding mechanism 2 and two groups of drive units compositions.Pedestal 1, motion platform 3 and guiding mechanism 2 are processed by a block of material, are integrated assembling free flexible mechanism.During the The Nomenclature Composition and Structure of Complexes of two groups of drive units is identical, wherein form by flexible detent 4, fixture 5, two balls 7,9 and spring 8 for one group.Place, both sides relative in the pedestal 1 respectively is provided with circular hole 6, circular hole 12, is used to install two groups of drive units; Two groups of drive units are distributed in two opposite side places of motion platform 3, and are dislocatedly distributed; In described one group of drive unit, two balls 7,9 and spring 8 are installed in the circular hole 6; Flexible detent 4 is fixed on the pedestal 1 by fixture 5, and the front end of flexible detent 4 is pressed on the ball 7, and ball 7 is pressed on the spring 8, and spring 8 is pressed on the ball 9, and ball 9 is pressed on the motion platform 3.
The input of whole platform is finished by flexible detent 4 and flexible detent 10, and described flexible detent 4 is fine setting screw thread pair, motor leading screw, milscale or linear electric motors.
Compare with existing platform, the present invention has following effect:
The present invention adopts submissive displacement scaling device, promptly can manually also can mix control system and realize location automatically, makes platform obtain high-precision output under the input of low precision, under the prerequisite that guarantees bearing accuracy, has reduced the cost of platform significantly.Motion platform has symmetrical structure, has very strong temperature resistance distortion function, adopts all-in-one-piece compliant mechanism, and the bearing accuracy of platform is effectively guaranteed.
The present invention not only has the bearing accuracy height, safeguards advantages such as simple, and it is low to have a cost, assembles advantages such as simple.Therefore have good versatility and practical value.
Description of drawings
Fig. 1 is the structural representation that the present invention is based on the precision rotation positioning platform of compliant mechanism.
Fig. 2 is a kind of cylindrical structure, can replace the ball 7,9,13,15 among Fig. 1.
Embodiment
Below in conjunction with Figure of description the specific embodiment of the present invention is described further:
As shown in Figure 1, the precision rotation positioning platform based on compliant mechanism comprises pedestal 1, motion platform 3, guiding mechanism 2 and two groups of drive units.In two groups of drive units, wherein form by flexible detent 4, fixture 5, two balls 7,9 and spring 8 for one group; Another group is made up of flexible detent 10, fixture 11, two balls 13,15 and spring 14.Place, both sides relative in the pedestal 1 respectively is provided with a circular hole, as circular hole among the figure 6 and circular hole 12, is used to install two groups of drive units; Two groups of drive units are distributed in two opposite side places of motion platform 3, and are dislocatedly distributed; In one group of drive unit, two balls 7,9 and spring 8 are installed in the circular hole 6 therein; Flexible detent 4 is fixed on the pedestal 1 by fixture 5, and the front end of flexible detent 4 is pressed on the ball 7, and ball 7 is pressed on the spring 8, and spring 8 is pressed on the ball 9, and ball 9 is pressed on the motion platform 3; In another group drive unit, two balls 13,15 and spring 14 are installed in the circular hole 12; Flexible detent 10 is fixed on the pedestal 1 by fixture 11, and the front end of flexible detent 10 is pressed on the ball 13, and ball 13 is pressed on the spring 14, and spring 14 is pressed on the ball 15, and ball 15 is pressed on the motion platform 3.
The input of whole platform is finished by flexible detent 4 and flexible detent 10.The input of flexible detent 4 drives ball 7 and slides, and ball 7 has compressed spring 8 in sliding process, after spring 8 is compressed, the pressure that is subjected to is delivered on the ball 9, and ball 9 directly promotes motion platform 3 and rotates.The input of flexible detent 10 and the input process of flexible detent 4 are identical.When the input of flexible detent 10 was identical with the input of flexible detent 4 size, it is identical that motion platform 3 is subjected to two sizes, and direction is opposite and along centrosymmetric two the driving force effects of platform, rotatablely moves thereby produce.
Because the rigidity of spring 8, spring 14 and guiding mechanism 2 differs greatly, therefore when flexible detent 4 had input, the move distance of ball 7 and ball 9 was diverse.The rigidity of spring 8, spring 14 and guiding mechanism 2 differs big more, it is also just big more that the move distance of ball 7 and ball 9 differs, main cause is can shorten after spring 8 is under pressure, the input displacement major part of flexible detent 4 is lost in the compression deformation of spring 8, the effective displacement that is delivered to ball 9 and motion platform 3 significantly reduces, simultaneously, corresponding the reducing of input offset deviation that this also makes flexible detent 4 that is to say that the bearing accuracy of platform is largely increased.Because the displacement accuracy of flexible detent 4 is certain, the move distance of ball 7 and ball 9 differs big more, and the bearing accuracy of platform is also just high more.By this mechanism, can make low precision, drive unit obtains high-precision output cheaply, has reduced the cost of platform significantly, has strengthened the universal of platform, has good practical value.
Claims (4)
1. precision rotation positioning platform based on compliant mechanism, comprise pedestal (1), motion platform (3), guiding mechanism (2) and two groups of drive units, in two groups of drive units, form by flexible detent (4), fixture (5), two balls (7,9) and spring (8) for any one group, it is characterized in that: one group of relative both sides respectively is provided with a circular hole (6,12) in the pedestal (1), is used to install two groups of drive units; Two groups of drive units are distributed in above-mentioned one group of relative place, both sides of motion platform (3), and are dislocatedly distributed; In any one group of drive unit, two balls (7,9) and spring (8) are installed in the circular hole (6); Flexible detent (4) is fixed on the pedestal (1) by fixture (5), the front end of flexible detent (4) is pressed on one of them ball (7), this ball (7) is pressed on an end of spring (8), the other end of spring (8) is pressed on the another one ball (9), and this another one ball (9) is pressed on again on the motion platform (3).
2. the precision rotation positioning platform based on compliant mechanism according to claim 1 is characterized in that: pedestal (1), motion platform (3) and guiding mechanism (2) are processed by a block of material, are integrated assembling free flexible mechanism.
3. the precision rotation positioning platform based on compliant mechanism according to claim 1 and 2 is characterized in that described flexible detent (4) is fine setting screw thread pair, motor leading screw, milscale or linear electric motors.
4. the precision rotation positioning platform based on compliant mechanism according to claim 3 is characterized in that: described two balls (7,9) replace with two right cylinders.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710031074A CN101149979B (en) | 2007-10-26 | 2007-10-26 | Precision rotation positioning platform based on compliant mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710031074A CN101149979B (en) | 2007-10-26 | 2007-10-26 | Precision rotation positioning platform based on compliant mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101149979A CN101149979A (en) | 2008-03-26 |
| CN101149979B true CN101149979B (en) | 2010-05-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200710031074A Expired - Fee Related CN101149979B (en) | 2007-10-26 | 2007-10-26 | Precision rotation positioning platform based on compliant mechanism |
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| Country | Link |
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| CN (1) | CN101149979B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103448056A (en) * | 2013-08-26 | 2013-12-18 | 江西理工大学 | Plane integrated full-smooth parallel microoperation mechanism |
| CN103495967B (en) * | 2013-09-28 | 2015-12-09 | 北京工业大学 | The submissive joint parallel robot experiment device of a kind of plane five bar |
| CN103531252B (en) * | 2013-10-22 | 2015-06-03 | 大连交通大学 | Micrometric displacement working table |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201111936Y (en) * | 2007-10-26 | 2008-09-10 | 华南理工大学 | Precision rotating locating platform based on submissiveness mechanism |
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- 2007-10-26 CN CN200710031074A patent/CN101149979B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201111936Y (en) * | 2007-10-26 | 2008-09-10 | 华南理工大学 | Precision rotating locating platform based on submissiveness mechanism |
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| CN101149979A (en) | 2008-03-26 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: ZHONGYUAN TECHNOLOGY (SHENZHEN) CO.,LTD. Assignor: South China University of Technology Contract record no.: 2011990001125 Denomination of invention: Precision rotation positioning platform based on compliant mechanism Granted publication date: 20100519 License type: Exclusive License Open date: 20080326 Record date: 20111228 |
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| EM01 | Change of recordation of patent licensing contract |
Change date: 20150522 Contract record no.: 2011990001125 Assignee after: CHINA UNITED SMART TECHNOLOGY (SZ) CO.,LTD. Assignee before: ZHONGYUAN TECHNOLOGY (SHENZHEN) CO.,LTD. |
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| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| 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: 20100519 Termination date: 20211026 |