CN106324793A - Small diameter reflector supporting structure - Google Patents
Small diameter reflector supporting structure Download PDFInfo
- Publication number
- CN106324793A CN106324793A CN201610864007.7A CN201610864007A CN106324793A CN 106324793 A CN106324793 A CN 106324793A CN 201610864007 A CN201610864007 A CN 201610864007A CN 106324793 A CN106324793 A CN 106324793A
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- Prior art keywords
- reflecting mirror
- annulus
- mandrel
- pressing plate
- small
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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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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Telescopes (AREA)
- Optical Elements Other Than Lenses (AREA)
Abstract
The invention relates to a small diameter reflector supporting structure which belongs to the technical field of supporting structures. The structure is invented with the object of solving the problems in the prior art that a bonded reflector supporting structure does not have uniform bonding intensity and is sensitive to temperatures. The supporting structure comprises a mandrel, a back plate, a tight pressing mechanism, a pressing plate, a silicon pad and a pad ring. The front end of the mandrel's outer wall is provided with an arc-shaped ring belt. The reflector is capable of making two-dimensional swing, axial movement, and tangential rotation around the arc-shaped ring belt. The pressing plate is fixedly arranged in the concave groove at the front end face of the mandrel. The silicon pad is fixedly arranged at the back surface of the pressing plate and presses tightly at the front ring belt of the reflector. The pad ring is sleeved on the mandrel, and both the front face and the back face of the pad ring are provided with a front boss and a back boss respectively. The bosses are in contact with the reflector's back ring belt and the front surface of the back plate. The tight pressing mechanism presses the pad ring and the back plate tightly on the mandrel shoulder. The supporting structure of the invention can ensure the accurate positioning of a reflector. And it is not affected by face shapes with different temperatures and different pitching angles. In transportation, it can also withstand slight impact and vibrations.
Description
Technical field
The invention belongs to supporting construction technical field, be specifically related to a kind of small-bore (below 300mm) mirror support knot
Structure, is particularly suited for supporting small-bore falcate light-weighted mirror.
Background technology
Along with the aggravation of mankind's space operation, earth orbit space distributed substantial amounts of extraterrestrial target, and (extraterrestrial target is main
Refer to satellite, including satellite and idle satellite of work, also include space junk simultaneously, as entered the boosting fire of space orbit
Arrow, protective cover and other objects, also include the various spaceflight things entering earth outer space, such as comet and asteroid), this
A little extraterrestrial targets have had a strong impact on the space operation of the mankind.It would therefore be desirable to understand the quantity of extraterrestrial target, distribution, track,
States etc., to meet the needs such as space early warning, information countermeasure.These detections are alive with the behavior of identification extraterrestrial target, acquisition information
Dynamic, it is simply that space situation awareness.In prior art, Space Object Detection and identification Data Source are mainly by optoelectronic device and nothing
Line electricity equipment.Wherein, optical device, because wave band is short and utilizes the reflection of target or radiation information to detect, has imaging and differentiates
The feature that rate is high, highly sensitive, detection range is remote, has played important function in supporting and space Situation Awareness.
Optoelectronic device for Space Object Detection is broadly divided into ground and space-based two kinds.Ground based detection equipment is visited with space-based
Measurement equipment is compared, have be easily installed, debug, safeguard, upgrading, the advantage such as cost is relatively low under same bore, because of
This application is the most extensive.In ground based detection equipment, there is large aperture telescope (main bore is generally 0.6m～8m) and multiple little
The camera lens (bore is at below 300mm) of bore, large aperture telescope combines each Terminal Type and obtains data, multiple small-bore camera lenses pair
Under different background, the various features of aerial target carry out monitoring and measuring.Owing to large aperture telescope and multiple small-bore camera lens exist
Under different luffing angles, minute surface is by deformation induced by gravity, affects result of detection, it is therefore desirable to take supporting construction to prevent its minute surface by certainly
Heavily deform.Mirror shape is corrected by large aperture telescope many employings Active support structure in real time, as used with hydraulic pressure, gas
Move and wait driver element.Small-bore camera lens many using reflecting mirror as primary mirror (for alleviating weight of equipment, keep sufficiently rigid while
Generally primary mirror is carried out falcate design), use passive supporting construction, common structure as Figure 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 provided with flange 11, and outer wall depends on from front to back
Secondary being provided with the first annulus the 12, second annulus 13 and the 3rd annulus 14, the first annulus 12 is provided with bonding annulus 121 and multiple leads glue
Groove 122, leads glue groove 122 circumference uniform distribution, and axially disposed runs through the first annulus 12, and glue flows into bonding ring from leading glue groove 122
In band 121, the through-hole wall of reflecting mirror 2 is adhesively fixed on the first annulus 12 by glue, and backboard 3 is sleeved on the second annulus 13
Outward, the rear annulus of reflecting mirror 2 contacts with the front surface of backboard 3, and the 3rd annulus 13 is provided with external screw thread, the first locking nut 4 He
Second locking nut 5 is tightened on the 3rd annulus 14, is pressed on the shaft shoulder 15 by backboard 2.Size A of the first annulus 12 is than reflection
The long 0.3mm of size B of mirror 2, when the first locking nut 4 and the second locking nut 5 compress backboard 3, reflecting mirror 2 still can be around mandrel
1 rotates, and the flange 11 preventing mandrel 1 front end from shielding applies pressure to the minute surface of reflecting mirror 2, and then affects face shape essence
Degree.Although this supporting construction can play the effect supporting reflecting mirror, but still have the disadvantage in that one be due to mandrel 1 with
Reflecting mirror 2 through-hole wall fit clearance the least (generally tens microns), is therefore easy to there is uneven the asking of adhesive strength
Topic, two is owing to glue exists mobility, therefore often results in viscose glue between the rear surface of reflecting mirror 2 and backboard 3, at reflecting mirror
When supporting construction varies with temperature, mirror shape can be had adverse effect on；Three is owing to using glue to fix, once failure
Need long time degumming and viscose glue again, waste time and energy.
Summary of the invention
It is an object of the invention to solve the glue adhesive strength that in prior art, reflecting mirror support structure exists uneven, right
The technical problems such as variations in temperature sensitivity, complex operation, it is provided that a kind of small-bore reflecting mirror support structure.
The technical scheme that the present invention solves the employing of above-mentioned technical problem is as follows.
Small-bore reflecting mirror support structure, including mandrel, backboard and hold-down mechanism；
The first annulus, the second annulus and the 3rd that external diameter is sequentially reduced it is sequentially provided with from front to back on the outer wall of described mandrel
Annulus, reflecting mirror is sleeved on outside the first annulus, and backboard is sleeved on outside the second annulus, and hold-down mechanism is arranged on the 3rd annulus；
Also include, pressing plate, silicagel pad and gasket ring；
The edge circumference uniform distribution of described mandrel front end face be provided with multiple groove, the outer wall front end of the first annulus be provided with instead
Penetrate the annulus that section is circular arc of the through-hole wall contact of mirror；
Described pressing plate is multiple, and each pressing plate is fixed in a groove；
Described 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 reflecting mirror
On band；
The front surface circumference uniform distribution of described gasket ring be provided with multiple front boss contacted with annulus after reflecting mirror, arbitrary neighborhood
Two front boss between be provided with and be connected with front boss and contour convex arc band, convex arc band contacts with the shaft shoulder, and outside convex arc band
Circular diameter is less than the outside diameter of the shaft shoulder；
The rear surface circumference uniform distribution of gasket ring be provided with multiple rear boss contacted with backboard front surface；
Multiple front boss, multiple rear boss and multiple pressing plates are corresponding in the circumference of mandrel；
Gasket ring and backboard are pressed on the shaft shoulder by described hold-down mechanism.
Further, described bottom portion of groove is provided with multiple screwed hole, and pressing plate is fixed by screws in groove.
Further, described groove is three, and each bottom portion of groove is provided with two screwed holes.
Further, the front annulus of described reflecting mirror is step, and is arranged on the through hole front end of reflecting mirror, described reflection
The rear annulus of mirror is arranged on the rear surface of reflecting mirror.
Further, the outward flange of described pressing plate is that circular arc and outward flange diameter are straight less than the cylindrical of annulus before reflecting mirror
Footpath.
Further, the rear surface of described pressing plate is provided with step, and silicagel pad is fixed in step.
Further, the central angle that described front boss is corresponding is 30 °.
Further, the outer wall of described 3rd annulus is provided 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 the 3rd annulus the most successively.
Further, the 4J32 that the material of described mandrel, pressing plate and gasket ring all uses thermal coefficient of expansion to be 0.07E 6/ DEG C
Invar.
Compared with prior art, the invention have the benefit that
The annulus that high-precision section is circular arc that the mandrel of the small-bore reflecting mirror support structure of the present invention is provided with,
Ensure that reflecting mirror carries out two-dimensional wiggle around it, moves axially and tangentially rotate；Hold-down mechanism passes through thrust by backboard
Being pressed on the shaft shoulder with gasket ring, thrust is not transferred to reflecting mirror, makes silicagel pad produce by regulation axial dimension gap pre-
Before and after on deformation, the pressing plate before reflecting mirror and reflecting mirror gasket ring below, boss applies thrust and stiction jointly,
About beam steering mirror two-dimensional wiggle, move axially and tangentially rotate, eventually through limit reflecting mirror six-freedom degree, it is achieved
Reflecting mirror is accurately positioned, it is ensured that reflecting mirror face shape under different luffing angles is unaffected, and under comfortable property
It is resistant to slight impact shock；
The small-bore reflecting mirror support structure of the present invention, mandrel, pressing plate and gasket ring use and reflecting mirror thermal coefficient of expansion phase
Near 4J32 invar material, reduces the supporting construction sensitivity to temperature, it is ensured that supporting construction can be in wider variations in temperature
In the range of use；
The small-bore reflecting mirror support structure of the present invention is applicable to the installation of all kinds of reflecting mirror, is particularly suited for small-bore
The installation of (below 300mm) falcate light-weighted mirror.
Accompanying drawing explanation
Fig. 1 is the installation diagram of small-bore reflecting mirror support structure in prior art；
Fig. 2 be in prior art the mandrel of small-bore reflecting mirror support structure partly cut open front view；
Fig. 3 is the left view of the mandrel of small-bore reflecting mirror support structure in prior art；
Fig. 4 is the installation diagram of the small-bore reflecting mirror support structure of the present invention；
Fig. 5 be the mandrel of the small-bore reflecting mirror support structure of the present invention partly cut open front view；
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 view 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 mandrel of small-bore reflecting mirror support structure of the present invention, pressing plate and the left view of gasket ring assembling structure
(without reflecting mirror)；
Figure 11 is the mandrel of small-bore reflecting mirror support structure of the present invention, pressing plate and the left view of gasket ring assembling structure
(containing reflecting mirror)；
In figure: 1, mandrel, 11, flange, the 12, first annulus, 121, bonding annulus, 122, lead glue groove, 123, groove,
1231, screwed hole, 124, section be the annulus of circular arc, the 13, second annulus, the 14, the 3rd annulus, 15, the shaft shoulder, 2, reflecting mirror,
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.
Detailed description of the invention
Below in conjunction with the accompanying drawings embodiments of the present invention are described further.
(omitting symmetrical structure in figure) as shown in Figure 4, the small-bore reflecting mirror support structure of the present invention, including mandrel 1, the back of the body
Plate the 3, first locking nut the 4, second locking nut 5, pressing plate 6, silicagel pad 7 and gasket ring 8.
Wherein, as shown in Figure 5 and Figure 6, the outer wall of mandrel 1 is sequentially provided with from front to back first annulus the 12, second annulus
13 and the 3rd annulus 14, the external diameter of first annulus the 12, second annulus 13 and the 3rd annulus 14 is sequentially reduced.
The through hole hole that the length of the first annulus 12 is slightly less than reflecting mirror 2 is long；The edge circumference of the front end face of the first annulus 12
Uniform is provided with multiple groove 123, generally three, is provided with screwed hole 1231 in groove 123；The outer wall front end of the first annulus 12
Being provided with the annulus 124 that section is circular arc, this section is that the annulus 124 of circular arc uses high precision design, and radian is the most special
Limiting, reflecting mirror 2 can be carried out two-dimensional wiggle around the annulus 124 that this section is circular arc, move axially and tangentially rotate.
The length of the second annulus 13 (containing escape) is slightly less than the through hole hole length of backboard 3 and the thickness sum of gasket ring 8.
The length of the 3rd annulus 14 (containing escape) slightly larger than the first locking nut 4 and the second locking nut 5 thickness it
With, the outer wall of the 3rd annulus 14 is provided with external screw thread.
Reflecting mirror 2 is sleeved on outside the first annulus 12 by its through hole.The structure of reflecting mirror 2 is not particularly limited, and is preferably
Falcate reflecting mirror.Generally, the front annulus of reflecting mirror 2 is step, and is arranged on the through hole front end of reflecting mirror 2, reflecting mirror 2
Rear annulus is arranged on the rear surface of reflecting mirror 2, and the front annulus of this reflecting mirror 2 and the structure of rear annulus are reflecting mirror in prior art
The common structure of annulus.
Backboard 3 is sleeved on outside the second annulus 13 by its through hole, and backboard 3 is for connecting mandrel 1 and mirror head outer shell, and structure does not has
Particular restriction, backboard of the prior art is had all to be suitable for the present invention.
The outward flange of pressing plate 6 be circular arc and outward flange diameter less than the outside diameter of annulus before reflecting mirror 2, so can
Avoid concentrating owing to contact produces stress, affect reflecting mirror 2 surface figure accuracy.The rear surface of pressing plate 6 is provided with step.The number of pressing plate 6
Measuring identical with the quantity of groove 123, a pressing plate 6 is fixed by screws in a groove 123.
The quantity of silicagel pad 7 is identical with 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 annulus of reflecting mirror 2.The shape of silicagel pad 7 preferably step shape with pressing plate 6 mates.
As Figure 7-9, gasket ring 8 is annular gasket, the front surface circumference uniform distribution of gasket ring 8 be provided with multiple and reflecting mirror
The front boss 81 of annulus contact after 2, the preferably central angle of front boss 81 correspondence is 30 °；Two front boss 81 of arbitrary neighborhood it
Between be provided with and be connected with front boss 81 and contour convex arc band 82, convex arc band 82 contacts with the shaft shoulder 15, and the cylindrical of convex arc band 82 is straight
Footpath is less than the outside diameter of the shaft shoulder 15；
The rear surface circumference uniform distribution of gasket ring 8 be provided with multiple rear boss 83 contacted with backboard 2 front surface.
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 the most successively on the 3rd annulus 14, gasket ring 8 and backboard 3 are 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, identical for realizing being applied to the point of force application of reflecting mirror 2 front-back, Duo Geqian
Boss 81, multiple rear boss 83 and multiple pressing plates 6 are corresponding in the circumference of mandrel 1.
In the present invention, the micro crystal material thermal coefficient of expansion that reflecting mirror 2 uses is generally 0.1E 6/ DEG C, mandrel 1, pressing plate 6 and
The material of gasket ring 8 preferably employs the 4J32 invar that thermal coefficient of expansion is 0.07E 6/ DEG C, so by Reasonable adjustment radial fit
Gap, it is possible to ensure in wider range of temperature, supporting construction does not affect the mirror surface-shaped precision of reflecting mirror 2.
The assembling process of the small-bore mirror support device of the present invention is: by gasket ring 8, backboard 3 by mandrel 1 rear portion successively
Assemble with the shaft shoulder 15 of mandrel 1, first locking nut the 4, second locking nut 5 is tightened on the 3rd ring by mandrel 1 rear portion successively
On band 14, gasket ring 8, backboard 3 are pressed on the shaft shoulder 15, then reflecting mirror 2 are inserted in by mandrel 1 front portion, then silicon will be fixed with
The pressing plate 6 of rubber cushion 7 is fixed at the screwed hole 1231 of mandrel 1, by silicagel pad 7, reflecting mirror 2 is pressed on gasket ring 8 front surface
On.
Claims (9)
- The most small-bore reflecting mirror support structure, including mandrel (1), backboard (3) and hold-down mechanism；The first annulus (12), the second annulus that external diameter is sequentially reduced it is sequentially provided with from front to back on the outer wall of described mandrel (1) And the 3rd annulus (14) (13), reflecting mirror (2) is sleeved on the first annulus (12) outward, and backboard (3) is sleeved on the second annulus (13) outward, Hold-down mechanism is arranged on the 3rd annulus (14)；It is characterized in that, also include, pressing plate (6), silicagel pad (7) and gasket ring (8)；The edge circumference uniform distribution of described mandrel (1) front end face be provided with multiple groove (123), the outer wall front end of the first annulus (12) It is provided with the annulus that section is circular arc (124) that the through-hole wall with reflecting mirror (2) contacts；Described pressing plate (6) is multiple, and each pressing plate (6) is fixed in a groove (123)；Described 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 reflecting mirror (2) on front annulus；The front surface circumference uniform distribution of described gasket ring (8) be provided with multiple front boss (81) contacted with reflecting mirror (2) annulus afterwards, appoint Be provided with between two front boss (81) anticipating adjacent and be connected with front boss (81) and contour convex arc band (82), convex arc band (82) with 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) be provided 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 circumference of mandrel (1)；Gasket ring (8) and backboard (3) are pressed on the shaft shoulder (15) by described hold-down mechanism.
- Small-bore reflecting mirror support structure the most according to claim 1, it is characterised in that described groove (123) bottom sets Multiple screwed hole (1231), pressing plate (6) is had to be fixed by screws in groove (123).
- Small-bore reflecting mirror support structure the most according to claim 2, it is characterised in that described groove (123) is three, Each groove (123) bottom is provided with two screwed holes (1231).
- Small-bore reflecting mirror support structure the most according to claim 1, it is characterised in that the front ring of described reflecting mirror (2) Band is step, and is arranged on the through hole front end of reflecting mirror (2), and the rear annulus of described reflecting mirror (2) is arranged on reflecting mirror (2) Rear surface.
- Small-bore reflecting mirror support structure the most according to claim 1, it is characterised in that the outward flange of described pressing plate (6) The outside diameter of reflecting mirror (2) front annulus it is less than for circular arc and outward flange diameter.
- Small-bore reflecting mirror support structure the most according to claim 1, it is characterised in that the rear surface of described pressing plate (6) Being provided with step, silicagel pad (7) is fixed in step.
- Small-bore reflecting mirror support structure the most according to claim 1, it is characterised in that described front boss (81) correspondence Central angle is 30 °.
- Small-bore reflecting mirror support structure the most according to claim 1, it is characterised in that outside described 3rd annulus (14) Wall is provided with external screw thread, and hold-down mechanism is made up of the first locking nut (4) and the second locking nut (5), the first locking nut (4) It is tightened on the most successively on the 3rd annulus (14) with the second locking nut (5).
- Small-bore reflecting mirror support structure the most according to claim 1, it is characterised in that described mandrel (1), pressing plate (6) The 4J32 invar all using thermal coefficient of expansion to be 0.07E 6/ DEG C 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 |
Applications Claiming Priority (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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| Publication Number | Publication Date |
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| CN106324793A true CN106324793A (en) | 2017-01-11 |
| CN106324793B 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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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107037567A (en) * | 2017-05-19 | 2017-08-11 | 北京空间机电研究所 | A kind of 3 bulbs combine radially cementing reflecting mirror support structure |
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| JP2011221298A (en) * | 2010-04-09 | 2011-11-04 | Hamamatsu Photonics Kk | Optical element holder |
| CN105182502A (en) * | 2015-07-22 | 2015-12-23 | 中国科学院西安光学精密机械研究所 | Micro-stress supporting structure of space-borne space reflector |
| CN105242373A (en) * | 2015-11-13 | 2016-01-13 | 长光卫星技术有限公司 | Space camera reflecting mirror center support device |
| CN105700109A (en) * | 2016-03-04 | 2016-06-22 | 中国科学院西安光学精密机械研究所 | Micro-stress supporting structure of large-caliber reflector |
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| JP2011221298A (en) * | 2010-04-09 | 2011-11-04 | Hamamatsu Photonics Kk | Optical element holder |
| CN102200623A (en) * | 2011-06-20 | 2011-09-28 | 北京空间机电研究所 | Micro-stress assembly flexible supporting method of small-calibre micro-crystal glass material reflector |
| CN105182502A (en) * | 2015-07-22 | 2015-12-23 | 中国科学院西安光学精密机械研究所 | Micro-stress supporting structure of space-borne space reflector |
| CN105242373A (en) * | 2015-11-13 | 2016-01-13 | 长光卫星技术有限公司 | Space camera reflecting mirror center support device |
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| CN107037567A (en) * | 2017-05-19 | 2017-08-11 | 北京空间机电研究所 | A kind of 3 bulbs combine radially cementing reflecting mirror support structure |
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| CN106324793B (en) | 2018-11-02 |
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