CN204188861U - Catoptron back support two-freedom rotates flexible hinge - Google Patents
Catoptron back support two-freedom rotates flexible hinge Download PDFInfo
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- CN204188861U CN204188861U CN201420680780.4U CN201420680780U CN204188861U CN 204188861 U CN204188861 U CN 204188861U CN 201420680780 U CN201420680780 U CN 201420680780U CN 204188861 U CN204188861 U CN 204188861U
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- flexible sheet
- freedom
- rectangular flexible
- rectangular
- platform
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Abstract
The utility model provides a kind of catoptron back support two-freedom and rotates flexible hinge, and described flexible hinge comprises 3-dimensional freedom platform, five degree of freedom flexible structure, stationary magazine creel.3-dimensional freedom platform is connected by the 5th rectangular flexible sheet with five degree of freedom flexible structure; Four rectangular flexible sheets in 3-dimensional freedom platform are evenly arranged along the central axis of article carrying platform, and be fixedly connected with article carrying platform, stationary magazine creel respectively, five degree of freedom flexible structure is fixedly connected with A by the bottom of the second contiguous block.The utility model can realize the two-freedom rotary motion of article carrying platform around x, y axis, has that additional movement amount is little, simple and compact for structure, good manufacturability, is easy to the advantage that regulates.
Description
Technical field
The utility model belongs to accurate machine construction design field, is specifically related to a kind of catoptron back support two-freedom and rotates flexible hinge, can be used in realizing the precision adjustment that such as catoptron etc. is conditioned components and parts bidimensional rotary motion angle.
Background technology
Flexible hinge is the precision drive mechanism combined by one or more flexible member with given shape, and it utilizes the elastic deformation of flexible member to produce limited high-precision motion, is widely used in the design of precision optical machinery and instrument.
Along with the development of optical technology, have higher requirement to the precision of debuging of optical element, traditional installation method has been difficult to meet.Flexible hinge because volume is little, without plurality of advantages such as friction, gapless, highly sensitive, reproducible and stable movement, more and more by the installation of high-precision optical element and adjust structure design adopt.
Current catoptron back support adjusting mechanism many employings mixed type parallel flexible hinge realizes the precision adjustment of large caliber reflecting mirror.This flexible hinge has three rotational freedoms, and catoptron can be made to rotate around three axles, i.e. the rotation of axis and minute surface normal in minute surface.And catoptron only needs the rotation doing axis in minute surface, when adopting merely the flexible hinge of this structure, there is the additional rotation around minute surface normal in catoptron, therefore, needs to be limited by other means.
Summary of the invention
The purpose of this utility model is: provide a kind of catoptron back support two-freedom to rotate flexible hinge.
The scheme that the utility model solves the problems of the technologies described above is:
Catoptron back support two-freedom of the present utility model rotates flexible hinge, and be characterized in, described flexible hinge comprises 3-dimensional freedom platform, five degree of freedom flexible structure, stationary magazine creel.Described 3-dimensional freedom platform contains article carrying platform, the first rectangular flexible sheet, the second rectangular flexible sheet, the 3rd rectangular flexible sheet, the 4th rectangular flexible sheet.Described five degree of freedom flexible structure contains the first contiguous block, the second contiguous block.Its annexation is, the first described rectangular flexible sheet, the second rectangular flexible sheet, the 3rd rectangular flexible sheet, the 4th rectangular flexible sheet are evenly arranged along the central axis of article carrying platform, are fixedly connected with respectively with article carrying platform.The first described contiguous block is provided with the 5th rectangular flexible sheet, and the second contiguous block is provided with the 6th rectangular flexible sheet, and the first contiguous block, the second contiguous block are fixedly connected with by the 6th rectangular flexible sheet.The central plane of the 5th described rectangular flexible sheet is vertical with the central plane of the 6th rectangular flexible sheet.Described 3-dimensional freedom platform is fixedly connected with by the 5th rectangular flexible sheet with five degree of freedom flexible structure, the central axis of 3-dimensional freedom platform and the central axes of five degree of freedom flexible structure.Described 3-dimensional freedom platform is fixedly connected with stationary magazine creel respectively by the first rectangular flexible sheet, the second rectangular flexible sheet, the 3rd rectangular flexible sheet, the 4th rectangular flexible sheet, and five degree of freedom flexible structure is fixedly connected with stationary magazine creel by the bottom of the second contiguous block.
The shape and size of the first described rectangular flexible sheet, the second rectangular flexible sheet, the 3rd rectangular flexible sheet, the 4th rectangular flexible sheet are all identical.
The 5th described rectangular flexible sheet is identical with the shape and size of the 6th rectangular flexible sheet.
The width of described article carrying platform and thickness are greater than the first rectangular flexible sheet, the second rectangular flexible sheet, the 3rd rectangular flexible sheet, the width of the 4th rectangular flexible sheet and thickness.
3-dimensional freedom platform in the utility model and five degree of freedom flexible structure form a flexiblesystem, and stationary magazine creel is the rigid support member of flexiblesystem.Described 3-dimensional freedom platform, five degree of freedom flexible structure can be processed as a part.
Each rectangular flexible sheet in the utility model has three degree of freedom, article carrying platform is made to have three degree of freedom by the elastic deformation of the first rectangular flexible sheet, the second rectangular flexible sheet, the 3rd rectangular flexible sheet and the 4th rectangular flexible sheet, namely around the rotational freedom of x, y-axis and the one-movement-freedom-degree along z-axis, five degree of freedom flexible structure then limits the mobile one-movement-freedom-degree of article carrying platform along z-axis, and after combination, article carrying platform only has the rotary freedom around x, y-axis.
Principle of the present utility model: produce reversible limited precise motion by the elastic deformation of rectangular flexible sheet, and being arranged by the combination of rectangular flexible sheet, thus three one-movement-freedom-degrees of constraint article carrying platform and around
zrotary freedom, thus make platform only exist around
x, ythe rotational freedom of axle.Such as catoptron etc. is conditioned element and article carrying platform is connected, utilizes precise driving device to drive, the precision adjustment that the two-freedom that can realize being conditioned components and parts rotates.
The utility model can be used in realizing the precision adjustment that such as catoptron etc. is conditioned components and parts bidimensional rotary motion angle, and two-freedom of the present utility model rotates flexible hinge and has that additional movement amount is little and simple and compact for structure, good manufacturability, be easy to the advantage of adjustment.
Accompanying drawing explanation
Fig. 1 is that two-freedom of the present utility model rotates flexible hinge structure schematic diagram;
Fig. 2 is the structural representation of the flexiblesystem in the utility model;
Fig. 3 be flexiblesystem in the utility model around
xthe structural representation of axle rotational deformation;
Fig. 4 be flexiblesystem in the utility model around
ythe structural representation of axle rotational deformation;
Fig. 5 is the structural representation that the rotational stiffness of article carrying platform in flexiblesystem of the present utility model calculates;
Fig. 6 is the structural representation that the utility model is applied in catoptron back support soft readjustment mechanism.
In figure, 1. article carrying platform 2. first rectangular flexible sheet 3. second rectangular flexible sheet 4. the 3rd rectangular flexible sheet 5. the 4th rectangular flexible sheet 6. first contiguous block 7. second contiguous block 8. the 5th rectangular flexible sheet 9. the 6th rectangular flexible sheet 10. stationary magazine creel 11. catoptron 12. first bond pad 13. two-freedom rotates flexible hinge 14. fixed support 15. first precise driving device 16. second bond pad 17. second precise driving device 18. the 3rd bond pad.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail
Embodiment 1
Fig. 1 is that two-freedom of the present utility model rotates flexible hinge structure schematic diagram, and Fig. 2 is the structural representation of the flexiblesystem in the utility model, Fig. 3 be flexiblesystem in the utility model around
xthe structural representation of axle rotational deformation, Fig. 4 be flexiblesystem in the utility model around
ythe structural representation of axle rotational deformation.In Fig. 1 ~ Fig. 4, catoptron back support two-freedom of the present utility model rotates flexible hinge, comprises 3-dimensional freedom platform, five degree of freedom flexible structure, stationary magazine creel 10.Described 3-dimensional freedom platform and five degree of freedom flexible structure form a flexiblesystem.Described 3-dimensional freedom platform contains article carrying platform 1, first rectangular flexible sheet 2, second rectangular flexible sheet 3, the 3rd rectangular flexible sheet 4, the 4th rectangular flexible sheet 5.Described five degree of freedom flexible structure contains the first contiguous block 6, second contiguous block 7.Its annexation is, the first described rectangular flexible sheet 2, second rectangular flexible sheet 3, the 3rd rectangular flexible sheet 4, the 4th rectangular flexible sheet 5 are evenly arranged along the central axis of article carrying platform 1, and one end of the first rectangular flexible sheet 2, second rectangular flexible sheet 3, the 3rd rectangular flexible sheet 4, the 4th rectangular flexible sheet 5 is fixedly connected with article carrying platform 1 respectively.The first described contiguous block 6 is provided with the 5th rectangular flexible sheet 8, second contiguous block 7 and is provided with the 6th rectangular flexible sheet 9, first contiguous block 6, second contiguous block 7 and is fixedly connected with by the 6th rectangular flexible sheet 9.The central plane of the 5th described rectangular flexible sheet 8 is vertical with the central plane of the 6th rectangular flexible sheet 9.Described 3-dimensional freedom platform is fixedly connected with by the 5th rectangular flexible sheet 8 with five degree of freedom flexible structure, the central axis of 3-dimensional freedom platform and the central axes of five degree of freedom flexible structure.Described 3-dimensional freedom platform is fixedly connected with stationary magazine creel 10 respectively by the other end of the first rectangular flexible sheet 2, second rectangular flexible sheet 3, the 3rd rectangular flexible sheet 4, the 4th rectangular flexible sheet 5, and five degree of freedom flexible structure is fixedly connected with stationary magazine creel 10 by the bottom of the second contiguous block 7.
The structure of the first described rectangular flexible sheet 2, second rectangular flexible sheet 3, the 3rd rectangular flexible sheet 4, the 4th rectangular flexible sheet 5 is identical.
The 5th described rectangular flexible sheet 8, the structure of the 6th rectangular flexible sheet 9 are identical.
The width of described article carrying platform 1 and thickness are greater than the first rectangular flexible sheet 2, second rectangular flexible sheet 3, the 3rd rectangular flexible sheet 4, the width of the 4th rectangular flexible sheet 5 and thickness.
Each rectangular flexible sheet in the utility model has three degree of freedom, makes article carrying platform 1 have three degree of freedom by the elastic deformation of the first rectangular flexible sheet 2, second rectangular flexible sheet 3, the 3rd rectangular flexible sheet 4 and the 4th rectangular flexible sheet 5, namely around
x,
ythe rotational freedom of axle and edge
zthe one-movement-freedom-degree of axle, five degree of freedom flexible structure then limits article carrying platform 1 edge
zthe mobile one-movement-freedom-degree of axle, namely combination after article carrying platform 1 only have around
x,
ythe rotation rotary freedom of axle, as shown in Figure 3, Figure 4.
Fig. 5 is the structural representation that the rotational stiffness of article carrying platform in flexiblesystem of the present utility model calculates, and in flexiblesystem of the present utility model, the rotational stiffness of article carrying platform is important kinematic parameter, therefore, needs to carry out designing and calculating in the application of reality.
In Fig. 5, in flexiblesystem of the present utility model, the computing formula of the rotational stiffness of article carrying platform is as follows: from structural symmetry of the present utility model, article carrying platform respectively around
xaxle and
ythe rigidity that axle rotates is identical, and due to the rotational stiffness of five degree of freedom flexible structure usually less than the rotational stiffness of 3-dimensional freedom platform many, therefore, can ignore its impact on rotational stiffness of the present utility model, namely rotational stiffness of the present utility model can replace by the rotational stiffness of 3-dimensional freedom platform is approximate.Each rectangular flexible sheet has identical physical dimension, and article carrying platform length is identical with width,
lrepresent rectangular flexible leaf length,
wrepresent rectangular flexible sheet width,
trepresent the thickness of rectangular flexible sheet,
erepresent the length of article carrying platform,
k 1represent article carrying platform 1 around
xaxle or
ythe rotational stiffness of axle,
k 2represent article carrying platform 1 around
zthe rotational stiffness of axle.Derive
k 1with
k 2approximate formula be:
In formula,
erepresent the utility model adopt the elastic modulus of material,
νrepresent the utility model adopt the Poisson ratio of material,
arepresent the thickness of rectangular flexible sheet and the ratio of length and
a=
t/
l,
brepresent hold the width of flexible sheets and the ratio of length and
b=
w/
l,
crepresent the length of article carrying platform 1 and the length of rectangular flexible sheet ratio and
c=
e/
l.Usually, when designing
amuch smaller than 1 and much smaller than
b, therefore formula (1) can be expressed as:
λ represent article carrying platform 1 around
zthe rotational stiffness of axle
k 2with around
xaxle or
ythe rotational stiffness of axle
k 1ratio, characterize the size of additional displacement amount.Can obtain according to formula (2) and formula (3):
By rational selection material and optimum structural parameter
a,
b,
c, rational rotational stiffness value can be obtained, and λ can be made much larger than 1, and then reduce additional movement amount.
Fig. 6 is the structural representation that the utility model is applied in catoptron back support soft readjustment mechanism.In Fig. 6, catoptron back support soft readjustment structure mainly comprises: catoptron 11, first bond pad 12, two-freedom of the present utility model rotate flexible hinge 13, fixed support 14, first precise driving device 15, second bond pad 16, second precise driving device 17, the 3rd bond pad 18.Its annexation is, the article carrying platform 1 that catoptron 11 rotates flexible hinge 13 by the first bond pad 12 and two-freedom is connected, and is connected respectively with the 3rd bond pad 18 by the second bond pad 16 with the first precise driving device 15 and the second precise driving device 17.Two-freedom rotates flexible hinge 13, first precise driving device 15, second precise driving device 17 and is separately fixed on fixed support 14.Adjust the displacement along catoptron 11 minute surface normal direction of the second bond pad 16 and the 3rd bond pad 18 by the first precise driving device 15 and the second precise driving device 17, make catoptron 11 produce respectively around
x,
ythe precision rotation of axle rotates, thus realizes the bidimensional anglec of rotation of accurate adjustment catoptron 11.
The reflector alignment process being provided with the catoptron back support soft readjustment mechanism of two-freedom of the present utility model rotation flexible hinge is as follows:
(1) adjust the first precise driving device 15 and the second precise driving device 17, make the second bond pad 16 and the 3rd bond pad 18 produce the displacement of equivalent in the same way along catoptron 11 minute surface normal, thus make catoptron 11 only around
yaxle rotates.
(2) adjust the first precise driving device 15 and the second precise driving device 17, make the second bond pad 16 and the 3rd bond pad 18 produce the displacement of reverse equivalent along catoptron 11 minute surface normal, thus make catoptron 11 only around
xaxle rotates.
(3) adjust the first precise driving device 15 and the second precise driving device 17, make the second bond pad 16 and the 3rd bond pad 18 produce a certain amount of displacement along catoptron 11 minute surface normal, thus make catoptron 11 simultaneously around
xwith
yaxle rotates, by controlling normal displacement that the first precise driving device 15 and the second precise driving device 17 produce and direction, can minute adjustment catoptron 11 respectively around
xaxle and
ythe angle of axle.
The utility model does not elaborate part and belongs to techniques well known.
Claims (4)
1. catoptron back support two-freedom rotates a flexible hinge, it is characterized in that: described flexible hinge comprises 3-dimensional freedom platform, five degree of freedom flexible structure, stationary magazine creel (10); Described 3-dimensional freedom platform and five degree of freedom flexible structure form a flexiblesystem; Described 3-dimensional freedom platform contains article carrying platform (1), the first rectangular flexible sheet (2), the second rectangular flexible sheet (3), the 3rd rectangular flexible sheet (4), the 4th rectangular flexible sheet (5); Described five degree of freedom flexible structure contains the first contiguous block (6), the second contiguous block (7); Its annexation is, the first described rectangular flexible sheet (2), the second rectangular flexible sheet (3), the 3rd rectangular flexible sheet (4), the 4th rectangular flexible sheet (5) are evenly arranged along the central axis of article carrying platform (1), are fixedly connected with respectively with article carrying platform (1); Described the first contiguous block (6) is provided with the 5th rectangular flexible sheet (8), and the second contiguous block (7) is provided with the 6th rectangular flexible sheet (9), and the first contiguous block (6), the second contiguous block (7) are fixedly connected with by the 6th rectangular flexible sheet (9); The central plane of the 5th described rectangular flexible sheet (8) is vertical with the central plane of the 6th rectangular flexible sheet (9); Described 3-dimensional freedom platform is fixedly connected with by the 5th rectangular flexible sheet (8) with five degree of freedom flexible structure, the central axis of 3-dimensional freedom platform and the central axes of five degree of freedom flexible structure; Described 3-dimensional freedom platform is fixedly connected with stationary magazine creel (10) respectively by the first rectangular flexible sheet (2), the second rectangular flexible sheet (3), the 3rd rectangular flexible sheet (4), the 4th rectangular flexible sheet (5), and five degree of freedom flexible structure is fixedly connected with stationary magazine creel (10) by the bottom of the second contiguous block (7).
2. catoptron back support two-freedom according to claim 1 rotates flexible hinge, it is characterized in that: the shape and size of the first described rectangular flexible sheet (2), the second rectangular flexible sheet (3), the 3rd rectangular flexible sheet (4), the 4th rectangular flexible sheet (5) are all identical.
3. catoptron back support two-freedom according to claim 1 rotates flexible hinge, it is characterized in that: the 5th described rectangular flexible sheet (8) is identical with the shape and size of the 6th rectangular flexible sheet (9).
4. catoptron back support two-freedom according to claim 1 rotates flexible hinge, it is characterized in that: the width of described article carrying platform (1) and thickness are greater than the first rectangular flexible sheet (2), the second rectangular flexible sheet (3), the 3rd rectangular flexible sheet (4), the width of the 4th rectangular flexible sheet (5) and thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420680780.4U CN204188861U (en) | 2014-11-14 | 2014-11-14 | Catoptron back support two-freedom rotates flexible hinge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420680780.4U CN204188861U (en) | 2014-11-14 | 2014-11-14 | Catoptron back support two-freedom rotates flexible hinge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204188861U true CN204188861U (en) | 2015-03-04 |
Family
ID=52620843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420680780.4U Withdrawn - After Issue CN204188861U (en) | 2014-11-14 | 2014-11-14 | Catoptron back support two-freedom rotates flexible hinge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204188861U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104375258A (en) * | 2014-11-14 | 2015-02-25 | 中国工程物理研究院总体工程研究所 | Reflecting mirror back support two-freedom-degree rotation flexible hinge |
| CN105929519A (en) * | 2016-07-12 | 2016-09-07 | 中国科学院光电技术研究所 | Serial-connected load carrying type rapid reflector structure |
| CN108562992A (en) * | 2018-06-20 | 2018-09-21 | 中国人民解放军国防科技大学 | Precise reflector frame based on flexible hinge |
-
2014
- 2014-11-14 CN CN201420680780.4U patent/CN204188861U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104375258A (en) * | 2014-11-14 | 2015-02-25 | 中国工程物理研究院总体工程研究所 | Reflecting mirror back support two-freedom-degree rotation flexible hinge |
| CN105929519A (en) * | 2016-07-12 | 2016-09-07 | 中国科学院光电技术研究所 | Serial-connected load carrying type rapid reflector structure |
| CN108562992A (en) * | 2018-06-20 | 2018-09-21 | 中国人民解放军国防科技大学 | Precise reflector frame based on flexible hinge |
| CN108562992B (en) * | 2018-06-20 | 2024-01-19 | 中国人民解放军国防科技大学 | Precise reflector frame based on flexible hinge |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150304 Effective date of abandoning: 20160622 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |