CN106324793B - A kind of small-bore reflecting mirror support structure - Google Patents
A kind of small-bore reflecting mirror support structure Download PDFInfo
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- CN106324793B CN106324793B CN201610864007.7A CN201610864007A CN106324793B CN 106324793 B CN106324793 B CN 106324793B CN 201610864007 A CN201610864007 A CN 201610864007A CN 106324793 B CN106324793 B CN 106324793B
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- annulus
- speculum
- mandrel
- reflecting mirror
- pressing plate
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- 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
- G02B7/198—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors with means for adjusting the mirror relative to its support
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Elements Other Than Lenses (AREA)
- Telescopes (AREA)
Abstract
The present invention relates to a kind of small-bore reflecting mirror support structures, belong to support construction technical field.Solves the problems such as gluing class reflecting mirror support structure adhesive strength is uneven, sensitive to temperature change in the prior art.The support construction includes mandrel, backboard, hold-down mechanism, pressing plate, silicagel pad and gasket ring, wherein, it is arc-shaped annulus that the outer wall front end of mandrel, which is equipped with section, speculum can carry out two-dimensional wiggle, axial movement and tangential rotation around it, pressing plate is fixed in the groove of mandrel front end face, silicagel pad is fixed on the rear surface of pressing plate and is pressed on the front ring band of speculum, gasket ring is sleeved on outside mandrel, front and rear surfaces are respectively equipped with the front and back boss contacted with annulus after speculum and backboard front surface, and gasket ring and backboard are pressed on the shaft shoulder of mandrel by hold-down mechanism.The support construction can ensure that speculum is accurately positioned, and the face shape under different temperatures, different pitch angles is unaffected, and slight impact vibration is resistant under comfortable property.
Description
Technical field
The invention belongs to support construction technical fields, and in particular to a kind of small-bore (300mm or less) mirror support knot
Structure is particularly suitable for supporting small-bore falcate light-weighted mirror.
Background technology
With the aggravation of mankind's space operation, earth orbit space distributed a large amount of extraterrestrial target, and (extraterrestrial target is main
Refer to satellite, including the satellite of work and idle satellite, while also including space junk, such as enters the boosting fire of space orbit
Arrow, protective cover and other objects further include the various space flight objects into earth outer space, such as comet and asteroid), this
A little extraterrestrial targets have seriously affected the space operation of the mankind.It would therefore be desirable to understand the quantity of extraterrestrial target, distribution, track,
State etc., to meet the needs such as space early warning, information countermeasure.These detections and the behavior of identification extraterrestrial target, acquisition information are lived
It is dynamic, it is exactly space situation awareness.In the prior art, Space Object Detection mainly passes through optoelectronic device and nothing with identification data source
Line electric equipment.Wherein, optical device because wave band is short and is detected using the reflection or radiation information of target there is imaging to differentiate
The remote feature of rate height, high sensitivity, detection range, important function has been played in supporting and space Situation Awareness.
Optoelectronic device for Space Object Detection is broadly divided into two kinds of ground and space-based.Ground based detection equipment is visited with space-based
Measurement equipment is compared, and is had many advantages, such as to be easily installed, is debugged, safeguards, upgrading, and cost is relatively low under same bore, because
This application is more extensive.In ground based detection equipment, there is large aperture telescope (main bore is generally 0.6m~8m) and multiple small
The camera lens (bore is in 300mm or less) of bore, large aperture telescope combine each Terminal Type to obtain data, multiple small-bore camera lenses pair
The various features of aerial target carry out monitoring and measuring under different background.Since large aperture telescope and multiple small-bore camera lenses exist
Minute surface is influenced result of detection by deformation induced by gravity under different pitch angles, it is therefore desirable to support construction be taken to prevent its minute surface by certainly
It deforms again.Large aperture telescope mostly uses active support construction and is corrected in real time to mirror shape, such as using with hydraulic pressure, gas
It is dynamic to wait driving units.Small-bore camera lens is mostly using speculum as primary mirror (to mitigate weight of equipment, while keeping sufficiently rigid
Falcate design usually is carried out to primary mirror), using passive support construction, common structure is as shown in Figs. 1-3, including mandrel 1, backboard
3, the first locking nut 4 and the second locking nut 5.Wherein, the front end face of mandrel 1 is equipped with flange 11, on outer wall from front to back according to
Secondary to be equipped with the first annulus 12, the second annulus 13 and third annulus 14, the first annulus 12 is equipped with adhesive ring band 121 and multiple leads glue
Slot 122 leads 122 circumference uniform distribution of glue groove, and it is axially disposed run through the first annulus 12, glue flows into adhesive ring from glue groove 122 is led
In band 121, the through-hole wall of speculum 2 is adhesively fixed on by glue on the first annulus 12, and backboard 3 is sleeved on the second annulus 13
Outside, the rear annulus of speculum 2 is contacted with the front surface of backboard 3, and third annulus 13 is equipped with external screw thread, 4 He of the first locking nut
Second locking nut 5 is tightened on third annulus 14, and backboard 2 is pressed on the shaft shoulder 15.The size A ratios of first annulus 12 reflect
The size B long 0.3mm of mirror 2, when the first locking nut 4 and the second locking nut 5 compression backboard 3, speculum 2 still can be around mandrel
1 rotation prevents the flange 11 that 1 front end of mandrel shields from applying pressure to the minute surface of speculum 2, and then influences face shape essence
Degree.Although the support construction can play the role of supporting speculum, following disadvantage is still remained：When due to mandrel 1 with
2 through-hole wall fit clearance very little of speculum (generally tens microns), therefore be easy to ask there are adhesive strength is non-uniform
Topic, second is that since there are mobility for glue, often results in viscose glue between the rear surface of speculum 2 and backboard 3, in speculum
When support construction varies with temperature, mirror shape can be had adverse effect on；Third, due to being fixed using glue, once failure
Long time degumming and again viscose glue are needed, it is time-consuming and laborious.
Invention content
It is uneven, right it is an object of the invention to solve glue sticking intensity existing for reflecting mirror support structure in the prior art
Temperature change is sensitive, the technical problems such as cumbersome, provides a kind of small-bore reflecting mirror support structure.
It is as follows that the present invention solves the technical solution that above-mentioned technical problem uses.
Small-bore reflecting mirror support structure, including mandrel, backboard and hold-down mechanism；
It is equipped with the first annulus, the second annulus and third that outer diameter is sequentially reduced on the outer wall of the mandrel successively from front to back
Annulus, speculum are sleeved on outside the first annulus, and backboard is sleeved on outside the second annulus, and hold-down mechanism is arranged on third annulus；
Further include pressing plate, silicagel pad and gasket ring；
The edge circumference uniform distribution of the mandrel front end face is equipped with multiple grooves, the outer wall front end of the first annulus be equipped with it is anti-
The section for penetrating the through-hole wall contact of mirror is arc-shaped annulus；
The pressing plate is multiple, and each pressing plate is fixed in a groove；
The silicagel pad is multiple, and each silicagel pad is fixed on the rear surface of a pressing plate and is pressed on the front ring of speculum
It takes；
The front surface circumference uniform distribution of the gasket ring is equipped with multiple front boss contacted with annulus after speculum, arbitrary neighborhood
Two front boss between be equipped with and be connected with front boss and contour convex arc band, convex arc band are contacted with the shaft shoulder, and convex arc band outside
Circular diameter is less than the outside diameter of the shaft shoulder；
The rear surface circumference uniform distribution of gasket ring is equipped with multiple rear boss contacted with backboard front surface；
Multiple front boss, multiple rear boss are corresponding in the circumferential direction of mandrel with multiple pressing plates；
Gasket ring and backboard are pressed on the shaft shoulder by the hold-down mechanism.
Further, the bottom portion of groove is equipped with multiple threaded holes, and pressing plate is fixed by screws in groove.
Further, the groove is three, and each bottom portion of groove is set there are two threaded hole.
Further, the front ring band of the speculum is step, and the front end of the through hole in speculum is arranged, the reflection
The rear surface in speculum is arranged in the rear annulus of mirror.
Further, the outer edge of the pressing plate is that arc-shaped and outer edge diameter is straight less than the outer circle of speculum front ring band
Diameter.
Further, the rear surface of the pressing plate is equipped with step, and silicagel pad is fixed in step.
Further, the corresponding central angle of the front boss is 30 °.
Further, the outer wall of the third annulus is equipped with external screw thread, and hold-down mechanism is by the first locking nut and second
Locking nut forms, and the first locking nut and the second locking nut are tightened on third annulus successively from front to back.
Further, the material of the mandrel, pressing plate and gasket ring is all made of the 4J32 that coefficient of thermal expansion is 6/ DEG C of 0.07E ﹣
Invar.
Compared with prior art, beneficial effects of the present invention are：
The high-precision section that the mandrel of the small-bore reflecting mirror support structure of the present invention is equipped with is arc-shaped annulus,
It can ensure that speculum carries out two-dimensional wiggle, axial movement and tangential rotation around it；Hold-down mechanism is by pressing force by backboard
It is pressed on the shaft shoulder with gasket ring, pressing force is not transferred to speculum, so that silicagel pad is generated in advance by adjusting axial size gap
It deforming, the pressing plate before speculum applies pressing force and stiction jointly with the front and back boss on the subsequent gasket ring of speculum,
About the two-dimensional wiggle of beam steering mirror, axial movement and tangential rotation are realized eventually by the six-freedom degree of limitation speculum
Speculum is accurately positioned, ensures that face shape of the speculum under different pitch angles is unaffected, and under comfortable property
It is resistant to slight impact vibration；
The small-bore reflecting mirror support structure of the present invention, mandrel, pressing plate and gasket ring use and speculum coefficient of thermal expansion phase
Close 4J32 invar materials reduce sensibility of the support construction to temperature, ensure that support construction can be in wider temperature change
It is used in range；
The small-bore reflecting mirror support structure of the present invention is suitable for the installation of all kinds of speculums, is particularly suitable for small-bore
The installation of (300mm or less) falcate light-weighted mirror.
Description of the drawings
Fig. 1 is the installation diagram of small-bore reflecting mirror support structure in the prior art；
Fig. 2 is the half-sectional front view of the mandrel of small-bore reflecting mirror support structure in the prior art；
Fig. 3 is the left view of the mandrel of small-bore reflecting mirror support structure in the prior art；
Fig. 4 is the installation diagram of the small-bore reflecting mirror support structure of the present invention；
Fig. 5 is the half-sectional front view of the mandrel of the small-bore reflecting mirror support structure of the present invention；
Fig. 6 is the left view of the mandrel of the small-bore reflecting mirror support structure of the present invention；
Fig. 7 is the front view of the gasket ring of the small-bore reflecting mirror support structure of the present invention；
Fig. 8 is the A-A cut away views of Fig. 7；
Fig. 9 is the rearview of the gasket ring of the small-bore reflecting mirror support structure of the present invention；
Figure 10 is the left view of the mandrel of the small-bore reflecting mirror support structure of the present invention, pressing plate and gasket ring assembling structure
(being free of speculum)；
Figure 11 is the left view of the mandrel of the small-bore reflecting mirror support structure of the present invention, pressing plate and gasket ring assembling structure
(containing speculum)；
In figure：1, mandrel, 11, flange, the 12, first annulus, 121, adhesive ring band, 122, lead glue groove, 123, groove,
1231, threaded hole, 124, section be arc-shaped annulus, the 13, second annulus, 14, third annulus, 15, the shaft shoulder, 2, speculum,
3, backboard, the 4, first locking nut, the 5, second locking nut, 6, pressing plate, 7, silicagel pad, 8, gasket ring, 81, front boss, 82, convex arc
Band, 83, rear boss.
Specific implementation mode
Embodiments of the present invention are described further below in conjunction with the accompanying drawings.
(symmetrical structure is omitted in figure) as shown in Figure 4, small-bore reflecting mirror support structure of the invention, including mandrel 1, the back of the body
Plate 3, the first locking nut 4, the second locking nut 5, pressing plate 6, silicagel pad 7 and gasket ring 8.
Wherein, as shown in Figure 5 and Figure 6, the first annulus 12, the second annulus are equipped on the outer wall of mandrel 1 successively from front to back
13 and third annulus 14, the outer diameter of the first annulus 12, the second annulus 13 and third annulus 14 be sequentially reduced.
The through-hole hole that the length of first annulus 12 is slightly less than speculum 2 is long；The edge circumference of the front end face of first annulus 12
Uniformly distributed is equipped with multiple grooves 123, and generally three, groove 123 is interior to be equipped with threaded hole 1231；The outer wall front end of first annulus 12
It is arc-shaped annulus 124 equipped with section, which is that arc-shaped annulus 124 uses high precision design, radian not special
Limitation, speculum 2 can be that arc-shaped annulus 124 carries out two-dimensional wiggle, axial movement and tangential rotation around the section.
The length of second annulus 13 (containing escape) is slightly less than the sum of the thickness of through-hole the hole length and gasket ring 8 of backboard 3.
The length of third annulus 14 (contain escape) slightly larger than the thickness of the first locking nut 4 and the second locking nut 5 it
It is equipped with external screw thread with the outer wall of, third annulus 14.
Speculum 2 is sleeved on by its through-hole outside the first annulus 12.The structure of speculum 2 is not particularly limited, preferably
Falcate speculum.In general, the front ring band of speculum 2 is step, and the front end of the through hole in speculum 2 is set, speculum 2
The rear surface in speculum 2, the front ring band of the speculum 2 and the structure of rear annulus is arranged as speculum in the prior art in annulus afterwards
The common structure of annulus.
Backboard 3 is sleeved on by its through-hole outside the second annulus 13, and backboard 3 is used for connecting mandrel 1 and mirror head outer shell, and structure does not have
There is specifically limited, all applicable present invention of backboard in the prior art.
The outer edge of pressing plate 6 is the outside diameter that arc-shaped and outer edge diameter is less than 2 front ring band of speculum, in this way can
It avoids generating stress concentration due to contact, influences 2 surface figure accuracy of speculum.The rear surface of pressing plate 6 is equipped with step.The number of pressing plate 6
Amount is identical as the quantity of groove 123, and a pressing plate 6 is fixed by screws in a groove 123.
The quantity of silicagel pad 7 is identical as the quantity of pressing plate 6, and a silicagel pad 7 is fixed in the step of a pressing plate 6, and
It is pressed on the front ring band of speculum 2.The shape of silicagel pad 7 is preferably matched with the step shape of pressing plate 6.
As Figure 7-9, gasket ring 8 is annular gasket, and the front surface circumference uniform distribution of gasket ring 8 is equipped with multiple and speculum
The front boss 81 that annulus contacts after 2, preferably 81 corresponding central angle of front boss are 30 °；Two front boss 81 of arbitrary neighborhood it
Between be equipped with and be connected with front boss 81 and contour convex arc band 82, convex arc band 82 are contacted with the shaft shoulder 15, and the outer circle of convex arc band 82 is straight
Diameter is less than the outside diameter of the shaft shoulder 15；
The rear surface circumference uniform distribution of gasket ring 8 is equipped with multiple rear boss 83 contacted with 2 front surface of backboard.
First locking nut 4 and the second locking nut 5 form hold-down mechanism, the first locking nut 4 and the second locking nut 5
It is tightened on successively on third annulus 14 from front to back, gasket ring 8 and backboard 3 is pressed abd fixed on the first annulus 12 and the second annulus 13
The shaft shoulder 15 on.
As shown in figs. 10-11, in the present invention, to realize that the point of force application for being applied to 2 front-back of speculum is identical, Duo Geqian
Boss 81, multiple rear boss 83 are corresponding in the circumferential direction of mandrel 1 with multiple pressing plates 6.
In the present invention, the micro crystal material coefficient of thermal expansion that speculum 2 uses is generally 6/ DEG C of 0.1E ﹣, mandrel 1,6 and of pressing plate
The material of gasket ring 8 preferably uses coefficient of thermal expansion for the 4J32 invar of 6/ DEG C of 0.07E ﹣, in this way by rationally adjusting radial fit
Gap can ensure that in wider range of temperature, support construction does not influence the mirror surface-shaped precision of speculum 2.
The assembling process of small-bore mirror support device of the present invention is：Successively by 1 rear portion of mandrel by gasket ring 8, backboard 3
It is assembled with the shaft shoulder 15 of mandrel 1, the first locking nut 4, the second locking nut 5 is tightened on third ring by 1 rear portion of mandrel successively
On band 14, gasket ring 8, backboard 3 are pressed on the shaft shoulder 15, are then inserted in speculum 2 by 1 front of mandrel, then silicon will be fixed with
The pressing plate 6 of rubber cushion 7 is fixed at the threaded hole 1231 of mandrel 1, and speculum 2 is pressed on 8 front surface of gasket ring by silicagel pad 7
On.
Claims (9)
1. small-bore reflecting mirror support structure, including mandrel (1), backboard (3) and hold-down mechanism；
It is equipped with the first annulus (12), the second annulus that outer diameter is sequentially reduced on the outer wall of the mandrel (1) successively from front to back
(13) and third annulus (14), speculum (2) are sleeved on the first annulus (12) outside, and backboard (3) is sleeved on the second annulus (13) outside,
Hold-down mechanism is arranged on third annulus (14)；
It is characterized in that, further including pressing plate (6), silicagel pad (7) and gasket ring (8)；
The edge circumference uniform distribution of mandrel (1) front end face is equipped with multiple grooves (123), the outer wall front end of the first annulus (12)
It is arc-shaped annulus (124) equipped with the section contacted with the through-hole wall of speculum (2)；
The pressing plate (6) is multiple, and each pressing plate (6) is fixed in a groove (123)；
The silicagel pad (7) is multiple, and each silicagel pad (7) is fixed on the rear surface of a pressing plate (6) and is pressed on speculum
(2) on front ring band；
Being equipped with for the front surface circumference uniform distribution of the gasket ring (8) is multiple with speculum (2) front boss (81) that annulus contacts afterwards, times
Be equipped with and be connected with front boss (81) and contour convex arc band (82) between two front boss (81) for anticipating adjacent, convex arc band (82) and
The shaft shoulder (15) contacts, and the outside diameter of convex arc band (82) is less than the outside diameter of the shaft shoulder (15)；
The rear surface circumference uniform distribution of gasket ring (8) is equipped with multiple rear boss (83) contacted with backboard (3) front surface；
Multiple front boss (81), multiple rear boss (83) and multiple pressing plates (6) are corresponding in the circumferential direction of mandrel (1)；
Gasket ring (8) and backboard (3) are pressed on the shaft shoulder (15) by the hold-down mechanism.
2. small-bore reflecting mirror support structure according to claim 1, which is characterized in that groove (123) bottom is set
There are multiple threaded holes (1231), pressing plate (6) to be fixed by screws in groove (123).
3. small-bore reflecting mirror support structure according to claim 2, which is characterized in that the groove (123) is three,
Each groove (123) bottom sets that there are two threaded holes (1231).
4. small-bore reflecting mirror support structure according to claim 1, which is characterized in that the front ring of the speculum (2)
Band is step, and the front end of the through hole in speculum (2) is arranged, and the rear annulus of the speculum (2) is arranged in speculum (2)
Rear surface.
5. small-bore reflecting mirror support structure according to claim 1, which is characterized in that the outer edge of the pressing plate (6)
It is less than the outside diameter of speculum (2) front ring band for arc-shaped and outer edge diameter.
6. small-bore reflecting mirror support structure according to claim 1, which is characterized in that the rear surface of the pressing plate (6)
Equipped with step, silicagel pad (7) is fixed in step.
7. small-bore reflecting mirror support structure according to claim 1, which is characterized in that the front boss (81) is corresponding
Central angle is 30 °.
8. small-bore reflecting mirror support structure according to claim 1, which is characterized in that outside the third annulus (14)
Wall is equipped with external screw thread, and hold-down mechanism is made of the first locking nut (4) and the second locking nut (5), the first locking nut (4)
It is tightened on successively from front to back on third annulus (14) with the second locking nut (5).
9. small-bore reflecting mirror support structure according to claim 1, which is characterized in that the mandrel (1), pressing plate (6)
It is all made of the 4J32 invar that coefficient of thermal expansion is 6/ DEG C of 0.07E ﹣ with the material of gasket ring (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610864007.7A CN106324793B (en) | 2016-09-29 | 2016-09-29 | A kind of small-bore reflecting mirror support structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610864007.7A CN106324793B (en) | 2016-09-29 | 2016-09-29 | A kind of small-bore reflecting mirror support structure |
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| Publication Number | Publication Date |
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| CN106324793A CN106324793A (en) | 2017-01-11 |
| CN106324793B true CN106324793B (en) | 2018-11-02 |
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| CN201610864007.7A Active CN106324793B (en) | 2016-09-29 | 2016-09-29 | A kind of small-bore reflecting mirror support structure |
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| CN107037567B (en) * | 2017-05-19 | 2020-09-18 | 北京空间机电研究所 | Reflector supporting structure with three-point ball head combined with radial cementation |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP5620704B2 (en) * | 2010-04-09 | 2014-11-05 | 浜松ホトニクス株式会社 | Optical element holder |
| CN102200623B (en) * | 2011-06-20 | 2012-08-22 | 北京空间机电研究所 | Micro-stress assembly flexible supporting method of small-calibre micro-crystal glass material reflector |
| CN105182502B (en) * | 2015-07-22 | 2017-09-26 | 中国科学院西安光学精密机械研究所 | A kind of microstress supporting construction of spaceborne spacing reflection mirror |
| CN105242373B (en) * | 2015-11-13 | 2017-07-21 | 长光卫星技术有限公司 | Space camera mirror center support meanss |
| CN105700109B (en) * | 2016-03-04 | 2018-02-27 | 中国科学院西安光学精密机械研究所 | A kind of microstress supporting construction of large caliber reflecting mirror |
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