CN107783247A - Single-degree-of-freedom rotating shaft, whiffletree supporting constructions and mirror support device - Google Patents
Single-degree-of-freedom rotating shaft, whiffletree supporting constructions and mirror support device Download PDFInfo
- Publication number
- CN107783247A CN107783247A CN201711138288.9A CN201711138288A CN107783247A CN 107783247 A CN107783247 A CN 107783247A CN 201711138288 A CN201711138288 A CN 201711138288A CN 107783247 A CN107783247 A CN 107783247A
- Authority
- CN
- China
- Prior art keywords
- freedom
- degree
- rotating shaft
- inside casing
- flexible
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000010276 construction Methods 0.000 title claims abstract description 44
- 239000000463 material Substances 0.000 claims description 9
- 229910001374 Invar Inorganic materials 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 3
- 238000004026 adhesive bonding Methods 0.000 claims description 3
- 229910052738 indium Inorganic materials 0.000 claims description 3
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 claims description 3
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims 1
- 229910052782 aluminium Inorganic materials 0.000 claims 1
- 239000004411 aluminium Substances 0.000 claims 1
- 230000000149 penetrating effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 9
- 238000010586 diagram Methods 0.000 description 5
- 230000035882 stress Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 4
- 230000003068 static effect Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 229920006335 epoxy glue Polymers 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 2
- 230000008646 thermal stress Effects 0.000 description 2
- 241000233855 Orchidaceae Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 239000008141 laxative Substances 0.000 description 1
- 230000002475 laxative effect Effects 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/18—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors
- G02B7/182—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors
- G02B7/1821—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors for rotating or oscillating mirrors
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/18—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors
- G02B7/182—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors
- G02B7/183—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors specially adapted for very large mirrors, e.g. for astronomy, or solar concentrators
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Astronomy & Astrophysics (AREA)
- Sustainable Development (AREA)
- Aerials With Secondary Devices (AREA)
- Centrifugal Separators (AREA)
Abstract
The invention belongs to space technical field, and in particular to a kind of single-degree-of-freedom rotating shaft, whiffletree supporting constructions and mirror support device.Single-degree-of-freedom rotating shaft includes single-freedom and flexible hinge and the free degree limits device in single-freedom and flexible hinge；Single-freedom and flexible hinge includes the upper flange above free degree limits device and the lower flange below free degree limits device, and upper flange is connected by two flexible boards positioned at both ends with lower flange；Free degree limits device includes inside casing and housing, inside casing by two opposite flanks symmetrically arranged cylindrical roller be connected with housing, the rotating direction of cylindrical roller is identical with the torsional direction of flexible board；The lateral surface that inside casing is connected with cylindrical roller is the arc surface tangent with cylindrical roller；Inside casing is fixedly connected with upper flange, and housing is fixedly connected with lower flange.The present invention solves the technical problem that the rigidity of structure is low, support effect is poor existing for the existing speculum based on whiffletree supporting constructions.
Description
Technical field
The invention belongs to space technical field, and in particular to a kind of single-degree-of-freedom rotating shaft, whiffletree support knots
Structure and mirror support device.
Background technology
With application of the space remote sensing technology in various fields, people propose increasingly to the performance of Space Remote Sensors
High requirement, high-resolution and big visual field are increasingly becoming its developing direction.Principal reflection mirror is most important in space remote sensing camera
Optical element, the height of reflecting mirror surface shape precision are directly related to the quality of remote sensor image quality.With the mouth of principal reflection mirror
Footpath increases, it is necessary to increase support points, therefore can bring the statically indeterminate problem of supporting construction, gravitational load, temperature loading and
Ensure that surface figure accuracy is more difficult under erection stress load, requirement of the speculum to supporting construction is also higher.
Chinese invention patent application CN105259635A disclosed in 20 days January in 2016 proposes one kind and is applied to heavy caliber
Whiffletree supporting constructions in the support of speculum static determinacy, in 6 points of supports of back of reflecting mirror, one group passes through two-by-two
Whiffletree supporting constructions connect.As shown in figure 1, in one group of whiffletree supporting construction, two flexible links 1 constrain
Two one-movement-freedom-degrees, it is equivalent to and constrains an one-movement-freedom-degree and a rotational freedom.When no central rotational is free
During degree release structure, the length of the flexible link as caused by manufacturing and positioning errors causes the minute surface of speculum 2 because crossing about for a moment
Beam and be deformed, as shown in bold portion in figure, so that mirror shape deterioration in accuracy.To realize that static determinacy supports, pass through
Single-degree-of-freedom rotating shaft 3 in whiffletree discharges the rotational freedom of superfluous constraint so that minute surface is caused by Planar Mechanisms
Deformation greatly reduces, dashed lines shown in part.6 points of supports are converted into supported at three point by three groups of whiffletree,
One one-movement-freedom-degree of constraint space and two rotational freedoms, perimeter support constrains remaining three degree of freedom, so as to realize
The static determinacy support of speculum.As shown in Fig. 2 single-degree-of-freedom rotating shaft 3 includes whippletree adpting flange 31, vertical flexible thin 32, water
Flat flexible thin 33 and supporting plate adpting flange 34.The whippletree 4 of whippletree adpting flange 31 and whiffletree supporting constructions is fixed
Connection, vertical flexible thin 32 form girder construction with the square crossing of horizontal flexibility thin plate 33 arrangement.Single-degree-of-freedom rotating shaft 3 passes through this
The torsion of one girder construction discharges rotational freedom.
The shortcomings that supporting construction is：In order to fully discharge rotational freedom, wanted around on the trunnion axis of whippletree
There is sufficiently low rotational stiffness, the span of rotating shaft need to be increased, reduce the thickness and width of flexible flake, can so cause optical axis side
To axial rigidity and around optical axis rotational stiffness reduce, under gravity along optical axis direction displacement increase, mirror assembly
Fundamental frequency can also substantially reduce, so as to be difficult in adapt to remote sensing camera transport and emission process in severe vibration environment；And by
In the cross section of rotating shaft and non-circular, after torsional deflection, warping phenomenon can be produced, so as to influence to position support accuracy, is caused anti-
Mirror surface-shaped precision is penetrated to change；Meanwhile under temperature loading effect, due to traditional single-degree-of-freedom rotating shaft both ends fixed constraint meeting
Stress produces thermal deformation, and the heat endurance of structure is deteriorated.
The content of the invention
It is an object of the present invention to provide a kind of single-degree-of-freedom rotating shaft, whiffletree supporting constructions and mirror support device,
Solves the technology that the rigidity of structure is low, support effect is poor existing for the existing speculum based on whiffletree supporting constructions
Problem.
The present invention technical solution be：A kind of single-degree-of-freedom rotating shaft, it is characterized in that：It is soft including single-degree-of-freedom
Property hinge and the free degree limits device in single-freedom and flexible hinge；
The single-freedom and flexible hinge includes the upper flange above free degree limits device and limited positioned at the free degree
Lower flange below device processed, the upper flange are connected by two flexible boards positioned at both ends with lower flange；
The free degree limits device includes inside casing and housing, and the inside casing on two opposite flanks by being symmetrical arranged
Cylindrical roller be connected with housing, the rotating direction of the cylindrical roller is identical with the torsional direction of the flexible board；In described
The lateral surface that frame is connected with cylindrical roller is the arc surface tangent with cylindrical roller；The inside casing is fixedly connected with upper flange, institute
Housing is stated to be fixedly connected with lower flange.
Further, above-mentioned housing includes upper half housing and lower half housing, is set between the upper half housing and lower half housing
It is equipped with dividing plate；
Two cylindrical rollers are provided between the upper half housing and inside casing, two cylindrical rollers are located at two phases of inside casing
To arc surface on；
Two cylindrical rollers are provided between the lower half housing and inside casing, two cylindrical rollers are located at two phases of inside casing
To arc surface on.
Further, the medial surface that above-mentioned upper half housing is connected with cylindrical roller is upper outer including what is seamlessly transitted from up to down
Arc surface and upper inner arc surface, the radius of curvature of the upper exterior arc surface is less than the radius of curvature of upper inner arc surface, described interior
The central shaft of arc surface and the center of rotation overlapping of axles of single-freedom and flexible hinge；
The medial surface that the lower half housing is connected with cylindrical roller include the bottom-up lower exterior arc surface seamlessly transitted and
Lower inner arc surface, the radius of curvature of the lower exterior arc surface are less than the radius of curvature of lower inner arc surface, the lower inner arc surface
The center of rotation overlapping of axles of central shaft and single-freedom and flexible hinge.
Further, it is provided with down to repair between above-mentioned housing and lower flange and grinds pad, is set between the inside casing and upper flange
Repaiied on having and grind pad.
Further, above-mentioned inside casing is provided centrally with manhole, it is described on repair and grind the circle of pad and inside casing center and lead to
Hole forms shaft hole matching.
Further, the upper flange of above-mentioned single-freedom and flexible hinge and lower flange are diameter identical circular flange disks；
The housing of the free degree limits device is mutually nested rectangle frame with inside casing.
Further, the material of above-mentioned single-freedom and flexible hinge is titanium alloy, the housing of the free degree limits device
Material with inside casing is indium steel, and the material of the cylindrical roller is aluminum-base silicon carbide.
The present invention also provides a kind of whiffletree supporting constructions based on above-mentioned single-degree-of-freedom rotating shaft, its special character
It is：Including whippletree, single-degree-of-freedom rotating shaft and two flexible links, the center of the whippletree and the upper flange of single-degree-of-freedom rotating shaft are consolidated
Fixed connection, the center of rotation of the whippletree overlap with the center of rotation of single-degree-of-freedom rotating shaft, and two flexible links are symmetricly set in horizontal stroke
The both ends of thick stick, the flexible link is perpendicular to whippletree.
The present invention a kind of mirror support device based on above-mentioned whiffletree supporting constructions is also provided, its it is special it
Be in：Including supporting back board, three whiffletree supporting constructions, the whiffletree supports are set in supporting back board
Structure is fixedly connected by the lower flange of single-degree-of-freedom rotating shaft with supporting back board；The flexibility of the whiffletree supporting constructions
Bar is fixedly connected with the invar inserts of mirror back surface.
Further, the end set of above-mentioned supporting back board has flexible two foot levers of three groups of lateral supports；The lateral support
Flexible two foot levers are fixedly connected with mirrored side by gluing.
The beneficial effects of the present invention are：
1. rigidity is high.Traditional single-degree-of-freedom rotating shaft is led because the span of girder construction is big, and for fully release rotational freedom
Cause the cross section parameter value of beam to diminish, cause the Stiffness on other free degree directions.The present invention is in single-freedom and flexible hinge
On the basis of add free degree limits device, single-freedom and flexible hinge can discharge rotational freedom Rx, and itself is being moved
There is higher rigidity on dynamic free degree Tz；Free degree limits device can realize the gap and can that disappears by the way of pretension is positioned
Stiffness by itself is improved, a rotational freedom Rx is only discharged, there is higher rigidity on other free degree directions, compensate for list
The deficiency of free degree flexible hinge rigidity on rotational freedom Rz, greatly improve the resonant frequency of mirror assembly.
2. heat endurance is good.The both ends of traditional single-degree-of-freedom rotating shaft are fixed constraint, temperature loading effect under, can because
Thermal stress and be deformed.The structure of the present invention is compacter, and size is both less than traditional rotating shaft in all directions, in thermal force
The lower deformation very little of effect；Lower flange is fixed constraint at work, and upper flange is considered as free end, by thermal force making
Used time can fully discharge thermal deformation, will not produce big internal stress；The closing of the free degree limits device pretension of self-contained one itself
System, thermal stress are not transferred to upper and lower flange.
3. surface figure accuracy is high.Traditional single-degree-of-freedom rotating shaft is constrained by other free degree directional stiffness, can not fully be discharged
Rotational freedom, each flexible link support force has notable difference in whiffletree, and because cross section is non-circular, is turning round
Warpage can occur when turning, cause reflecting mirror surface shape deterioration in accuracy.Single-degree-of-freedom rotating shaft in the present invention at work, by flexible thin
The bending release rotational freedom of plate, the center of rotation of free degree limits device and the center of rotation weight of single-freedom and flexible hinge
Close, unnecessary moment of flexure will not be produced at work, it is possible to increase fully discharged while other free degree directional stiffness rotatably mounted
Spend Rx, the error brought can be eliminated in processing and assembling process and cause whiffletree supporting constructions closer to etc. power branch
Support, mirror mirror can obtain higher surface figure accuracy.
4. security is good.The moment of flexure and angular deformation that traditional single-degree-of-freedom rotating shaft is born are proportional, are shaken in severe
When being acted under rotating ring border or by sudden load, primary mirror component meeting stress is excessive to be produced moderate finite deformation and is destroyed.This hair
In bright, the mating surface of upper half housing, lower half housing and cylindrical roller includes the arc surface of two sections of different curvatures, passes through match grinding dividing plate
Thickness can make single-degree-of-freedom rotating shaft have different rotational characteristics, and when whippletree inclination angle is beyond the mark, reaction force can increase rapidly
Greatly, and two sections of arc surfaces seamlessly transit, and will not produce rigid shock, can effectively prevent primary mirror component under extraneous load effect
It is destroyed.
Brief description of the drawings
Fig. 1 is the operation principle schematic diagram of whiffletree supporting constructions.
Fig. 2 is the structural representation of single-degree-of-freedom rotating shaft in the prior art.
Fig. 3 is the structural representation of present pre-ferred embodiments single-degree-of-freedom rotating shaft.
Fig. 4 is the structural representation of free degree limits device in present pre-ferred embodiments single-degree-of-freedom rotating shaft.
Fig. 5 is the top view of present pre-ferred embodiments single-degree-of-freedom rotating shaft.
Fig. 6 is the upward view of present pre-ferred embodiments single-degree-of-freedom rotating shaft.
Fig. 7 is the operation principle schematic diagram of present pre-ferred embodiments single-degree-of-freedom rotating shaft.
Fig. 8 is the profile of present pre-ferred embodiments single-degree-of-freedom rotating shaft.
Fig. 9 is the partial enlarged drawing at A in Fig. 8.
Figure 10 is the whiffletree supporting construction schematic diagrames of the invention based on single-degree-of-freedom rotating shaft.
Figure 11 is the mirror support device schematic diagram of the invention based on whiffletree supporting constructions.
Figure 12 is the assembling schematic diagram of mirror support device of the present invention.
Wherein, reference is as follows：1- flexible links, 2- speculums, 3- single-degree-of-freedom rotating shafts, 31- whippletree adpting flanges,
The vertical flexible thins of 32-, 33- horizontal flexibility thin plates, 34- supporting plate adpting flanges, 4- whippletrees, 5- single-freedom and flexible hinges,
51- upper flanges, 511- upper flange fixing holes, 512- upper flange bolts, 52- lower flanges, 521- lower flange fixing holes, 522- laxative remedies
Blue bolt, 53- flexible boards, 6- free degree limits devices, 61- inside casings, 62- housings, 621- upper half housings, 622- lower half housings,
623- dividing plates, 63- cylindrical rollers, repair on 71- and grind pad, repaiied under 72- and grind pad, 8- supporting back boards, 9- lateral supports two foot levers of flexibility.
Embodiment
As shown in figure 3, the present invention is a kind of single-degree-of-freedom rotating shaft, the structure of its preferred embodiment mainly includes single-degree-of-freedom
Flexible hinge 5 and the free degree limits device 6 in single-freedom and flexible hinge 5；
Single-freedom and flexible hinge 5 includes limiting positioned at the upper flange 51 of the top of free degree limits device 6 and positioned at the free degree
The lower flange 52 of the lower section of device 6 processed, upper flange 51 are connected by two flexible boards 53 positioned at both ends with lower flange 52；To finish
The globality of structure, single-freedom and flexible hinge 5 is designed as an entirety.
The present embodiment single-degree-of-freedom rotating shaft can apply in whiffletree supporting constructions.Based on the three-dimensional shown in Fig. 3
Rectangular coordinate system, the rotatably mounted of Planar Mechanisms can be discharged by the flexural deformation of flexible board 53 in single-freedom and flexible hinge 5
Rx is spent, so that whiffletree supporting constructions switch at 2 points a bit, to realize that static determinacy supports.Meanwhile free degree limits device
6 can discharge rotational freedom Rx, and have higher rigidity on rotational freedom Rz and one-movement-freedom-degree Tz, improve
The mechanical characteristic of single-degree-of-freedom rotating shaft and the fundamental frequency of mirror assembly.
As shown in figure 4, free degree limits device 6 specifically includes inside casing 61 and housing 62, inside casing is mutually nested with housing
Rectangle frame.Inside casing 61 by two opposite flanks symmetrically arranged cylindrical roller 63 be connected with housing, cylindrical roller 63
Rotating direction it is identical with the torsional direction of flexible board 53；Inside casing 61 with the lateral surface that cylindrical roller 63 is connected is and cylindrical roller
63 tangent arc surfaces.Housing 62 includes upper half housing 621 and lower half housing 622, upper half housing 621 and lower half housing 622 it
Between be provided with dividing plate 623.Four screwed holes 624 and two pin holes 625 are provided with housing 62, screwed hole 624 is used to install
Pre-loading screw, with reference to the thickness of match grinding dividing plate 623, it can adjust between upper half housing 621, lower half housing 622 and dividing plate 623
Pretension degree；Pin hole 625 is used to install alignment pin, so as to upper half housing 621, lower half housing 622 and dividing plate 623
Relative position is positioned.
Inside casing 61 is provided with four bolt holes, for being fixedly connected with upper flange 51；Housing 62 is also respectively arranged with four
Individual bolt hole, for being fixedly connected with lower flange 52.Referring to Fig. 5 and Fig. 6, upper flange 51 and lower flange 52 are diameter identicals
Circular flange disk, is provided with six upper flange fixing holes 511 and four upper flange bolts 512 on upper flange 51, on lower flange 52
It is provided with six lower flange fixing holes 521 and four lower flange bolts 522.Upper flange fixing hole 511 and lower flange fixing hole 521
It is respectively used to upper flange 51 or lower flange 52 being fixedly connected with corresponding support meanss or support object.Such as based on
In the mirror support device of whiffletree supporting constructions, upper flange 51 by upper flange fixing hole 511 with
The whippletree of whiffletree supporting constructions is fixedly connected, and lower flange 52 is carried on the back by the support of lower flange fixing hole 521 and speculum
Plate is fixedly connected.The position correspondence of four bolt holes set on upper flange bolt 512 and inside casing 61, for by upper flange 51
It is fixedly connected with inside casing 61.Lower flange bolt 522 and the position correspondence of four bolt holes set on housing 62, for by under
Flange 52 is fixedly connected with housing 62.
As shown in fig. 7, the mismachining tolerance of two flexible links and rigging error will cause list in whiffletree supporting constructions
Flexible board in free degree flexible hinge is respectively by Moment, its deflection curve equation and equations of rotating angle：
Wherein, E is modulus of elasticity, and I is the moment of inertia of flexible board cross section, and M is moment of flexure, and h is flexible board height, ω be
The amount of deflection of the lower single-degree-of-freedom flexible hinge of moment M effect, θ are the corners of the single-degree-of-freedom flexible hinge under moment M effect.
Because rotational angle theta is minimum, therefore have：
θ=tan θ
Under moment M effect, the tangent line on flexible board top or the normal of upper flange central point intersect with line of symmetry all the time
In O points, it will be appreciated that for upper flange rotary middle spindle at the half of flexible board short transverse., will freely in assembling
The center of rotation of degree limits device overlaps with the center of rotation of single-freedom and flexible hinge upper flange, can so avoid single freedom
Degree rotating shaft in the course of the work because flexible board bending when discontinuity produce stress concentration.
As shown in figure 8, being based on principles above, the present embodiment is repaiied under being provided between housing 62 and lower flange 52 and grinds pad
72, it is provided with to repair between inside casing 61 and upper flange 51 and grinds pad 71.Inside casing 61 is provided centrally with manhole, above repaiies and grinds pad
71 form shaft hole matching with the manhole inside casing center.By repaiied on match grinding grind pad 71, under repair and grind pad 72, it is ensured that upper method
Orchid 51 and the depth of parallelism and spacing of inside casing 61 and the depth of parallelism and spacing of lower flange 52 and housing 62, and ensure that the free degree limits
The center of rotation of device 6 processed overlaps with the center of rotation of single-freedom and flexible hinge 5.
It is preferred that being provided with two cylindrical rollers 63 between upper half housing 621 and inside casing 61, two cylindrical rollers are positioned at interior
On two relative arc surfaces of frame.
As shown in figure 9, the medial surface that upper half housing 621 is connected with cylindrical roller 63 is upper including seamlessly transitting from up to down
Exterior arc surface R1 and upper inner arc surface R2, upper exterior arc surface R1 radius of curvature are less than upper inner arc surface R2 radius of curvature, on
Inner arc surface R2 central shaft and the center of rotation overlapping of axles of single-freedom and flexible hinge 5.Cylindrical roller 63 is in upper inner arc surface
It is unfettered when being rotated in R2, it can increase rapidly with the increase restraining force of corner when being rotated in upper exterior arc surface R1, to anti-
Mirror assembly is penetrated to play a protective role；Because upper exterior arc surface R1, upper inner arc surface R2 are seamlessly transitted, therefore will not be produced in vibration
Raw rigid shock.By the thickness of match grinding dividing plate 623, different rotational characteristics can be set with reference to regulation pre-loading screw.
Correspondingly, two cylindrical rollers 63 are also equipped between lower half housing 622 and inside casing 61, two cylindrical rollers are located at
On two relative arc surfaces of inside casing.
The medial surface that lower half housing 622 is connected with cylindrical roller 63 include the bottom-up lower exterior arc surface seamlessly transitted and
Lower inner arc surface, the radius of curvature of lower exterior arc surface are less than the radius of curvature of lower inner arc surface, the central shaft of lower inner arc surface with
The center of rotation overlapping of axles of single-freedom and flexible hinge.Its overall structure is symmetrically set with two arc surfaces in upper half housing 621
Put.
The material of single-freedom and flexible hinge 5 is titanium alloy, the housing 62 of free degree limits device 6 and the material of inside casing 61
It is indium steel, the material of cylindrical roller 63 is aluminum-base silicon carbide.
It is a kind of whiffletree supporting constructions based on the present embodiment single-degree-of-freedom rotating shaft shown in Figure 10, including whippletree
4th, single-degree-of-freedom rotating shaft 3 and two flexible links 1, the center of whippletree 4 are fixedly connected with the upper flange of single-degree-of-freedom rotating shaft 3, whippletree 4
Length direction it is identical with the torsional direction of single-degree-of-freedom rotating shaft 3, two flexible links 1 are symmetricly set in the both ends of whippletree 4, flexible
Bar 1 is perpendicular to whippletree 4.
It is to be made with three groups of whiffletree supporting constructions based on the present embodiment single-degree-of-freedom rotating shaft shown in Figure 11 and Figure 12
For the mirror support device of main support section, its structure includes supporting back board 8, upper each three groups of setting of supporting back board 8
Whiffletree supporting constructions, whiffletree supporting constructions are solid by the lower flange and supporting back board 8 of single-degree-of-freedom rotating shaft
Fixed connection；The flexible link of whiffletree supporting constructions is fixedly connected with the invar inserts at the back side of speculum 2.Supporting back board 8
End set has flexible two foot levers 9 of lateral support；The foot lever 9 of lateral support flexibility two is connected with mirrored side by gluing fixation
Connect.6 points of supports are converted into supported at three point by three groups of whiffletree supporting constructions, constrain three spatial degrees of freedom jointly：Rx、
Ry、Tz；Three foot levers 9 of lateral support flexibility two constrain three spatial degrees of freedom jointly：Tx、Ty、Rz.
The assembling process being supported using the mirror support device to speculum is as follows：
Free degree limits device 6 is assembled first, and a small amount of MoS is used in the place with relative motion2Lubricating grease, pass through
Match grinding dividing plate 623 adjusts the gap of upper half housing 621 and lower half housing 622, after the completion of be connected using regulation pre-loading screw.
By repaiied on match grinding grind pad 71, under repair and grind pad 72 and ensure the center of rotation and free degree limits device of single-freedom and flexible hinge 5
The center of rotation of component 6 overlaps, with flange bolt 512 and the connection single-freedom and flexible of lower flange bolt 522 hinge 5 and freely
Spend limits device 6.
After single-degree-of-freedom rotating shaft installation, three groups of whiffletree supporting constructions are installed respectively.First by epoxy
Glue bonds together back invar inserts with speculum 2, after consolidation week age, successively using mode connects for screw back Yin
Steel inserts and flexible link, flexible link and the whippletree, whippletree and single-degree-of-freedom rotating shaft of whiffletree supporting constructions.Install three
After group whiffletree supporting constructions, mode connects for screw fastening support backboard 8 is used.
After back-supported component installation, by between match grinding supporting back board 8 and flexible two foot levers 9 of lateral support
Repair and grind pad, ensure that support median plane and the center of gravity of speculum 2 place plane overlaps, and by epoxy glue by lateral support flexibility bipod
Bar 9 bonds together with speculum 2, finally by with being screwed flexible two foot levers 9 of lateral support as punching, and with positioning
Finger setting, complete the assembling of reflecting mirror support structure.
Claims (10)
- A kind of 1. single-degree-of-freedom rotating shaft, it is characterised in that：Including single-freedom and flexible hinge and positioned at single-freedom and flexible hinge Interior free degree limits device；The single-freedom and flexible hinge includes the upper flange above free degree limits device and limited positioned at the free degree to fill The lower flange of lower section is put, the upper flange is connected by two flexible boards positioned at both ends with lower flange；The free degree limits device includes inside casing and housing, and the inside casing passes through the symmetrically arranged circle on two opposite flanks Post roller is connected with housing, and the rotating direction of the cylindrical roller is identical with the torsional direction of the flexible board；The inside casing with The connected lateral surface of cylindrical roller is the arc surface tangent with cylindrical roller；The inside casing is fixedly connected with upper flange, described outer Frame is fixedly connected with lower flange.
- 2. single-degree-of-freedom rotating shaft according to claim 1, it is characterised in that：The housing is included outside upper half housing and lower half Frame, dividing plate is provided between the upper half housing and lower half housing；Be provided with two cylindrical rollers between the upper half housing and inside casing, two cylindrical rollers be located at two of inside casing it is relative On arc surface；Be provided with two cylindrical rollers between the lower half housing and inside casing, two cylindrical rollers be located at two of inside casing it is relative On arc surface.
- 3. single-degree-of-freedom rotating shaft according to claim 2, it is characterised in that：What the upper half housing was connected with cylindrical roller Medial surface includes the upper exterior arc surface seamlessly transitted from up to down and upper inner arc surface, the radius of curvature of the upper exterior arc surface are small In the radius of curvature of upper inner arc surface, the central shaft of the upper inner arc surface and the rotary middle spindle weight of single-freedom and flexible hinge Close；The medial surface that the lower half housing is connected with cylindrical roller includes the bottom-up lower exterior arc surface seamlessly transitted and lower interior Arc surface, the radius of curvature of the lower exterior arc surface are less than the radius of curvature of lower inner arc surface, the center of the lower inner arc surface The center of rotation overlapping of axles of axle and single-freedom and flexible hinge.
- 4. according to any described single-degree-of-freedom rotating shaft in claim 1-3, it is characterised in that：Between the housing and lower flange It is provided with down to repair and grinds pad, is provided with to repair between the inside casing and upper flange and grinds pad.
- 5. single-degree-of-freedom rotating shaft according to claim 4, it is characterised in that：Being provided centrally with for the inside casing is circular logical Hole, it is described on repair and grind pad and form shaft hole matching with the manhole inside casing center.
- 6. single-degree-of-freedom rotating shaft according to claim 5, it is characterised in that：The upper flange of the single-freedom and flexible hinge It is diameter identical circular flange disk with lower flange；The housing of the free degree limits device is mutually nested rectangle with inside casing Frame.
- 7. single-degree-of-freedom rotating shaft according to claim 6, it is characterised in that：The material of the single-freedom and flexible hinge is Titanium alloy, the housing of the free degree limits device and the material of inside casing are indium steel, and the material of the cylindrical roller is aluminium base Carborundum.
- 8. the whiffletree supporting constructions of any described single-degree-of-freedom rotating shaft, its feature in a kind of 1-7 based on claim It is：Including whippletree, single-degree-of-freedom rotating shaft and two flexible links, the center of the whippletree and the upper flange of single-degree-of-freedom rotating shaft are consolidated Fixed connection, the center of rotation of the whippletree overlap with the center of rotation of single-degree-of-freedom rotating shaft, and two flexible links are symmetricly set in horizontal stroke The both ends of thick stick, the flexible link is perpendicular to whippletree.
- A kind of 9. mirror support device of the whiffletree supporting constructions based on described in claim 8, it is characterised in that： Including supporting back board, three groups of whiffletree supporting constructions are set, the whiffletree supporting constructions are led in supporting back board The lower flange for crossing single-degree-of-freedom rotating shaft is fixedly connected with supporting back board；The flexible link of the whiffletree supporting constructions with it is anti- The invar inserts for penetrating the mirror back side is fixedly connected.
- 10. the mirror support device of whiffletree supporting constructions according to claim 9, it is characterised in that：It is described The end set of supporting back board has flexible two foot levers of three groups of lateral supports；Flexible two foot levers of the lateral support and mirrored side It is fixedly connected by gluing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711138288.9A CN107783247B (en) | 2017-11-16 | 2017-11-16 | Single-degree-of-freedom rotating shaft, whistle supporting structure and reflector supporting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711138288.9A CN107783247B (en) | 2017-11-16 | 2017-11-16 | Single-degree-of-freedom rotating shaft, whistle supporting structure and reflector supporting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107783247A true CN107783247A (en) | 2018-03-09 |
| CN107783247B CN107783247B (en) | 2024-04-05 |
Family
ID=61433283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711138288.9A Active CN107783247B (en) | 2017-11-16 | 2017-11-16 | Single-degree-of-freedom rotating shaft, whistle supporting structure and reflector supporting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107783247B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111427130A (en) * | 2020-04-17 | 2020-07-17 | 中国科学院长春光学精密机械与物理研究所 | Flexible supporting structure of optical reflector |
| CN114442256A (en) * | 2022-01-11 | 2022-05-06 | 智慧星空(上海)工程技术有限公司 | Flexible adjusting device for reflector |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020092352A1 (en) * | 2001-01-17 | 2002-07-18 | Honeywell International, Inc. | Whiffletree accelerometer |
| CN102416590A (en) * | 2011-10-28 | 2012-04-18 | 中国科学院光电技术研究所 | Flexible limit support device for large-caliber light reflecting mirror and installation method for device |
| US8570675B1 (en) * | 2012-05-02 | 2013-10-29 | Raytheon Company | Kinematic optical device mount |
| CN105259635A (en) * | 2015-11-17 | 2016-01-20 | 中国科学院长春光学精密机械与物理研究所 | Whiffletree support structure applied to statically determined support of large-aperture reflector |
| CN105259634A (en) * | 2015-11-17 | 2016-01-20 | 中国科学院长春光学精密机械与物理研究所 | Two-degree-of-freedom flexible joint in whiffletree supporting structure of large-aperture reflecting mirror |
| CN207541320U (en) * | 2017-11-16 | 2018-06-26 | 中国科学院西安光学精密机械研究所 | Single-degree-of-freedom shaft, whiffletree support constructions and mirror support device |
-
2017
- 2017-11-16 CN CN201711138288.9A patent/CN107783247B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020092352A1 (en) * | 2001-01-17 | 2002-07-18 | Honeywell International, Inc. | Whiffletree accelerometer |
| CN102416590A (en) * | 2011-10-28 | 2012-04-18 | 中国科学院光电技术研究所 | Flexible limit support device for large-caliber light reflecting mirror and installation method for device |
| US8570675B1 (en) * | 2012-05-02 | 2013-10-29 | Raytheon Company | Kinematic optical device mount |
| CN105259635A (en) * | 2015-11-17 | 2016-01-20 | 中国科学院长春光学精密机械与物理研究所 | Whiffletree support structure applied to statically determined support of large-aperture reflector |
| CN105259634A (en) * | 2015-11-17 | 2016-01-20 | 中国科学院长春光学精密机械与物理研究所 | Two-degree-of-freedom flexible joint in whiffletree supporting structure of large-aperture reflecting mirror |
| CN207541320U (en) * | 2017-11-16 | 2018-06-26 | 中国科学院西安光学精密机械研究所 | Single-degree-of-freedom shaft, whiffletree support constructions and mirror support device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111427130A (en) * | 2020-04-17 | 2020-07-17 | 中国科学院长春光学精密机械与物理研究所 | Flexible supporting structure of optical reflector |
| CN111427130B (en) * | 2020-04-17 | 2021-05-11 | 中国科学院长春光学精密机械与物理研究所 | Flexible supporting structure of optical reflector |
| CN114442256A (en) * | 2022-01-11 | 2022-05-06 | 智慧星空(上海)工程技术有限公司 | Flexible adjusting device for reflector |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107783247B (en) | 2024-04-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207541320U (en) | Single-degree-of-freedom shaft, whiffletree support constructions and mirror support device | |
| CN107783247A (en) | Single-degree-of-freedom rotating shaft, whiffletree supporting constructions and mirror support device | |
| CN104280858B (en) | A kind of large caliber reflecting mirror back flexible supporting device | |
| ITMI20001097A1 (en) | HELICOPTER SUPPORT SHOE WITH DISCONNECTED RIGIDITY. | |
| CN104819164B (en) | A kind of adjustable stator blade linkage adjusting apparatus | |
| CN101713487A (en) | Lifting mechanism | |
| CN104267481B (en) | A kind of large caliber reflecting mirror back support device | |
| CN104360455B (en) | A kind of space remote sensing camera speculum flexibility Hooke's hinge supporting mechanism | |
| CN101661689A (en) | Display device | |
| CN101858482A (en) | Supporting mechanism | |
| CN107957671A (en) | High quality factor resonator for stem-winder | |
| CN101737417A (en) | Hinge structure | |
| Neill et al. | Final design of the LSST primary/tertiary mirror cell assembly | |
| WO2019200985A1 (en) | Arc-shaped lock and led display screen having same | |
| CN105911670A (en) | Planar mirror optical pointing assembly used for space | |
| CN115446692B (en) | Lower pendulum machine | |
| CN107887700B (en) | Transmission mechanism of seeker servo system | |
| CN109521546A (en) | A kind of microstress support construction of heavy caliber parallel light tube reflecting mirror | |
| Richard et al. | A new concept of modular kinematics to design ultra-high precision flexure-based robots | |
| US8610891B2 (en) | Gantry apparatus | |
| CN107765387A (en) | Rotating fine-regulating device based on thermal deformation driving | |
| Gong et al. | Design and analysis of support system of the LAMOST primary mirror | |
| JP2014137071A (en) | Friction damper | |
| CN102853221A (en) | Quickly-assembled/disassembled inner-frame mechanism of airborne photoelectric platform | |
| CN204203574U (en) | Based on the conllinear press-bending driving mechanism of double leval jib flexible hinge |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |