CN209417400U - Large caliber reflecting mirror vibration damping flexible support structure and mirror assembly - Google Patents
Large caliber reflecting mirror vibration damping flexible support structure and mirror assembly Download PDFInfo
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- CN209417400U CN209417400U CN201920173253.7U CN201920173253U CN209417400U CN 209417400 U CN209417400 U CN 209417400U CN 201920173253 U CN201920173253 U CN 201920173253U CN 209417400 U CN209417400 U CN 209417400U
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Abstract
The utility model provides a kind of large caliber reflecting mirror vibration damping flexible support structure and mirror assembly, including connecting bottom board, flexible leg and connection frame, and connecting bottom board passes through two flexible legs connections with frame connect；Wherein flexible leg is made of multiple flexible elastic slices being wholely set；Connecting bottom board and the flexible elastic slice two sides for connecting frame connection are provided with elastic slice armlet；L-type gap is formed between elastic slice armlet and flexible elastic slice；Damping material is filled in L-type gap；Flexible elastic slice two sides are each fixes one group of viscoplasticity constrained damping structure for other.It solves the problems, such as that reflecting mirror flexible support structure support stiffness is poor, vibratory response is big, can be applied in the support construction of 1 meter or more large caliber reflecting mirror, under the premise of not influencing reflecting mirror surface precision, reduce the risk that flexible support is used for large caliber reflecting mirror.
Description
Technical field
The utility model belongs to space optical remote sensor technical field, is related to a kind of vibration damping flexibility branch of large caliber reflecting mirror
Support structure and the mirror assembly.
Background technique
Large caliber reflecting mirror is the core element of large space optical sensor, positioning accuracy and the direct shadow of surface precision
The image quality of entire optical system is rung, and reflecting mirror support structure is the key that influence reflecting mirror surface precision.
Change to reduce mirror surface type caused by the external environments such as temperature and erection stress, usually by support structure designs
At flexible support.But there is also following defects simultaneously:
1) flexible support can weaken the support stiffness of mirror assembly significantly, lead to the reduction of component intrinsic frequency, or even draw
Play the resonance with satellite platform.Mirror assembly big for bore, that weight is big then becomes apparent；
2) mirror assembly is excessive in launching phase vibratory response, and support weak part stress is significantly increased, and easily causes
Yield deformation, which occurs, for supporting structure even destroys.
Utility model content
In order to solve the problems, such as that reflecting mirror flexible support structure support stiffness is poor, vibratory response is big, the utility model is provided
The vibration damping flexible support structure and mirror assembly of a kind of large caliber reflecting mirror.
The support construction can promote support stiffness, substantially drop under the premise of guarantee large caliber reflecting mirror high surface precision
It is low to respond problems of too because emitting vibration bring, to effectively ensure the safety of component.
The technical solution of the utility model is to provide a kind of vibration damping flexible support structure of large caliber reflecting mirror, including
Connecting bottom board, flexible leg and connection frame, above-mentioned connecting bottom board pass through two flexible legs connections with frame is connect；Above-mentioned connection bottom
Plate with reflecting mirror microscope base for connecting, and above-mentioned connection frame with mirror body for connecting；
It is characterized in that above-mentioned flexible leg is made of multiple flexible elastic slices being wholely set；With connecting bottom board and
The flexible elastic slice two sides of connection frame connection are provided with elastic slice armlet；L-type gap is formed between elastic slice armlet and flexible elastic slice；It is above-mentioned
Damping material is filled in L-type gap；One group of viscoplasticity constrained damping structure is respectively arranged in other flexible elastic slice two sides.
Further, above-mentioned damping material is ZN series damping material；Viscoplasticity constrained damping structure is by viscoelastic damping
Layer and rigid constraint layer are bonded, and visco-elastic damping layer side is pasted to flexible elastic slice surface.
Further, above-mentioned flexible leg successively includes the first flexible elastic slice, the second flexible elastic slice and third from top to bottom
Flexible elastic slice；Above-mentioned first flexible elastic slice and third flexibility elastic slice respectively with connect frame and connecting bottom board connection；
First flexible elastic slice is parallel to each other with third flexibility elastic slice and thickness is equal, the first flexible elastic slice, third flexible pellet
Piece normal direction and the normal direction of the second flexible elastic slice are orthogonal.
Further, above-mentioned connection frame is U-shaped, and the bottom of flexible leg and U-shaped connection frame connects.
Further, the thickness of elastic slice armlet is less than or equal to 1mm.
Further, which further includes the invar block being fixed in U-shaped connection frame.
Further, the linear expansion coefficient of invar block of material and the linear expansion coefficient of mirror body are consistent.
The utility model also provides a kind of large caliber reflecting mirror component, including reflecting mirror and reflecting mirror microscope base, it is special it
Be in: further include three groups of above-mentioned vibration damping flexible support structures；
Above-mentioned mirror body side is machined with 120 ° of uniformly distributed planar end surfaces, and three groups of vibration damping flexible support structures are uniformly distributed
On mirror environment planar end surface, connecting bottom board is fixed on reflecting mirror microscope base.
Further, which further includes the invar block being fixed in U-shaped connection frame, above-mentioned invar block and reflection
Mirror mirror body planar end surface bonding, mirror body material are that optical materials, the lines of invar block of material such as SiC, crystallite or quartz are swollen
Swollen coefficient is consistent with the linear expansion coefficient of mirror body.
Further, it is equipped with to repair between connecting bottom board and reflecting mirror microscope base and grinds pad.
The beneficial effects of the utility model are:
1, the utility model on flexible support structure by being arranged damping material and structure with viscoelastic damper, when component is held
When by transmitting dynamic loading, damping material plays the role of energy dissipation, and the mechanical response of reflecting mirror is effectively reduced.
2, certain position-limiting action can be played when vibration displacement is larger by increasing elastic slice armlet in flexible support weak link,
To protect structure safe.The utility model can be applied in the support construction of 1 meter or more large caliber reflecting mirror, not influence instead
Under the premise of penetrating mirror type precision, risk of the flexible support for large caliber reflecting mirror is reduced.
Detailed description of the invention
Fig. 1 is embodiment Large diameter mirror assembly structural schematic diagram；
Fig. 2 is vibration damping flexible support structure axonometric drawing in embodiment；
Fig. 3 is viscoplasticity constrained damping structure schematic diagram in embodiment；
Appended drawing reference in figure are as follows: 1- mirror body, 2- invar block, 3- vibration damping flexible support structure, 4- reflecting mirror microscope base,
5- planar end surface, 6-U type connect frame, the flexible elastic slice of 7- first, the flexible elastic slice of 8- second, 9- third flexibility elastic slice, 10- elastic slice shield
Arm, 11- damping material, 12- viscoplasticity constrained damping structure, 121- rigid constraint layer, 122- visco-elastic damping layer, 13- connection
Bottom plate.
Specific embodiment
The utility model thought of the utility model are as follows: damping energy dissipation structure is set on discrete type flexible support structure, is increased
Add the damping ratio on structural transmission path, reduces the dynamic response being transmitted on reflecting mirror.To realize mirror assembly
On the basis of precise positioning, the unloading of power heat, reach good vibration damping inhibition of vibration.It is practical to this with reference to the accompanying drawings and embodiments
It is novel to be described in detail:
It will be seen from figure 1 that the present embodiment mirror assembly includes mirror body 1, invar block 2, vibration damping flexible support
Structure 3 and reflecting mirror microscope base 4.
1 side of mirror body is machined with 120 ° of uniformly distributed planar end surfaces 5, and three groups of vibration damping flexible support structures 3 are uniformly distributed
In mirrored side.Vibration damping flexible support structure 3 is fixed on the planar end surface 5 of mirror body 1 by invar block 2, vibration damping
The connecting bottom board 13 of flexible support structure 3 is fixed by screws on reflecting mirror microscope base 4.The material of mirror body 1 can select
Select the optical materials such as SiC, crystallite or quartz.The linear expansion coefficient of invar block of material and the linear expansion coefficient one of mirror body
It causes.
Figure it is seen that the present embodiment vibration damping flexible support structure 3 includes U-shaped connection frame 6, flexible leg and connection
Bottom plate 13, U-shaped connection frame 6 are connect by two flexible legs with connecting bottom board 13.Flexible leg include the first flexible elastic slice 7,
Second flexible elastic slice 8 and third flexibility elastic slice 9, the first flexible elastic slice 7 is parallel to each other with third flexibility elastic slice 9 and thickness is equal,
The two normal direction and the normal direction of the second flexible elastic slice 8 are orthogonal.Before guaranteeing mirror assembly support construction rigidity
It puts, the first flexible elastic slice 8 of flexible elastic slice 7, second and 9 specific structure size of third flexibility elastic slice are according to practical mechanical condition meter
It calculates and determines.
First flexible elastic slice 7 is connected with U-shaped connection frame 6 and connecting bottom board respectively with third flexibility elastic slice 9, the first flexible pellet
The two sides of piece 7 and third flexibility elastic slice 9 are provided with elastic slice armlet 10, and the thickness of elastic slice armlet 10 is no more than 1mm, elastic slice shield
L-type gap is formed between arm and corresponding flexible elastic slice, fills the damping material of ZN series in the present embodiment in L-type gap
11, the damping material of other models can also be filled.One group of viscoplasticity is respectively set about in the front and rear sides face of the second flexible elastic slice 8
Beam damping structure 12.From figure 3, it can be seen that viscoplasticity constrained damping structure 12 includes visco-elastic damping layer 122 and rigid constraint
Layer 121, the material of visco-elastic damping layer 122 are ZN series damping material, and the material of rigid constraint layer 121 is TC4, and the two is cohered
Afterwards, 122 side of visco-elastic damping layer is pasted to the second 8 surface of flexible elastic slice using bonding agent.
Before assembly, each structural member is thoroughly cleaned.Firstly, viscoplasticity constrained damping structure 12 is adhered to the second flexible elastic slice
8 two sides, and fill in the L-type gaps of the flexible elastic slice 7 of damping material 11 to the first and 9 two sides of third flexibility elastic slice, room temperature is stood
One week, it is ensured that after curable adhesive layer, invar block 2 is connected in the U-shaped connection frame 6 of vibration damping flexible support structure 3 by screw.Its
It is secondary, guarantee that the relative positional relationship between mirror body 1 and invar block 2 is accurate using assembly tooling and adjustment device, in Yin
Epoxy glue is coated on the glued face of bloom 2, the above-mentioned three groups integrated components completed are bonded to reflecting mirror planar end surface 5 respectively
On, to curable adhesive layer.Finally, the mirror assembly for being bonded with three groups of vibration damping flexible support structures 3 and reflecting mirror mounting base 4 are made
It is connected with screw, is changed to reduce mirror surface type caused by erection stress, increased to repair therebetween and grind pad and make three groups of supports
The fitting surface of component is coplanar.
Claims (10)
1. a kind of large caliber reflecting mirror vibration damping flexible support structure, including connecting bottom board (13), flexible leg and connection frame, described
Connecting bottom board (13) passes through two flexible legs connections with frame is connect；The connecting bottom board (13) is used for and reflecting mirror microscope base (4)
Connection, the connection frame with mirror body (1) for connecting；
It is characterized by:
The flexible leg is made of multiple flexible elastic slices being wholely set；
Connecting bottom board (13) and the flexible elastic slice two sides for connecting frame connection are provided with elastic slice armlet (10)；Elastic slice armlet (10) with
L-type gap is formed between flexible elastic slice；Damping material (11) are filled in the L-type gap；
Flexible elastic slice two sides are each fixes one group of viscoplasticity constrained damping structure (12) for other.
2. large caliber reflecting mirror vibration damping flexible support structure according to claim 1, it is characterised in that: the damping material is
ZN series damping material；
The viscoplasticity constrained damping structure is bonded by visco-elastic damping layer (122) and rigid constraint layer (121), viscoplasticity
Damping layer (122) side is pasted to flexible elastic slice surface.
3. large caliber reflecting mirror vibration damping flexible support structure according to claim 2, it is characterised in that: the flexible leg from
It successively include the first flexible elastic slice (7), the second flexible elastic slice (8) and third flexibility elastic slice (9) under；First flexible pellet
Piece (7) and third flexibility elastic slice (9) respectively with connect frame and connecting bottom board (13) connects；
First flexible elastic slice (7) is parallel to each other with third flexibility elastic slice (9) and thickness is equal, and the first flexible elastic slice (7), third are soft
Property elastic slice (9) normal direction and the second flexible elastic slice (8) normal direction it is orthogonal.
4. large caliber reflecting mirror vibration damping flexible support structure according to claim 3, it is characterised in that: the connection frame is U
The bottom of type, flexible leg and U-shaped connection frame (6) connects.
5. large caliber reflecting mirror vibration damping flexible support structure according to claim 3, it is characterised in that: elastic slice armlet (10)
Thickness is less than or equal to 1mm；
The material of visco-elastic damping layer (122) is ZN series damping material, and the material of rigid constraint layer (121) is TC4.
6. large caliber reflecting mirror vibration damping flexible support structure according to claim 4, it is characterised in that: further include being fixed on U
Type connects the invar block (2) in frame (6).
7. large caliber reflecting mirror vibration damping flexible support structure according to claim 6, it is characterised in that: invar block (2) material
Linear expansion coefficient it is consistent with the linear expansion coefficient of mirror body (1).
8. a kind of large caliber reflecting mirror component, including reflecting mirror and reflecting mirror microscope base, it is characterised in that: further include that three groups of rights are wanted
Seek 1 to 5 any vibration damping flexible support structure (3)；
Mirror body (1) side is machined with 120 ° of uniformly distributed planar end surfaces (5), and three groups of vibration damping flexible support structures (3) are equal
Even to be distributed on mirror environment planar end surface (5), connecting bottom board (13) is fixed on reflecting mirror microscope base (4).
9. mirror assembly according to claim 8, it is characterised in that: further include the invar block being fixed in connection frame
(2), the invar block (2) is Nian Jie with mirror body planar end surface (5), and mirror body (1) material is SiC, crystallite or stone
The linear expansion coefficient of English optical material, invar block (2) material is consistent with the linear expansion coefficient of mirror body (1).
10. mirror assembly according to claim 9, it is characterised in that: connecting bottom board (13) and reflecting mirror microscope base (4) it
Between be equipped with and repair and grind pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920173253.7U CN209417400U (en) | 2019-01-31 | 2019-01-31 | Large caliber reflecting mirror vibration damping flexible support structure and mirror assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920173253.7U CN209417400U (en) | 2019-01-31 | 2019-01-31 | Large caliber reflecting mirror vibration damping flexible support structure and mirror assembly |
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| CN209417400U true CN209417400U (en) | 2019-09-20 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109669253A (en) * | 2019-01-31 | 2019-04-23 | 中国科学院西安光学精密机械研究所 | Large caliber reflecting mirror vibration damping flexible support structure and mirror assembly |
| CN111580243A (en) * | 2020-06-05 | 2020-08-25 | 中国科学院长春光学精密机械与物理研究所 | Reflector device |
-
2019
- 2019-01-31 CN CN201920173253.7U patent/CN209417400U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109669253A (en) * | 2019-01-31 | 2019-04-23 | 中国科学院西安光学精密机械研究所 | Large caliber reflecting mirror vibration damping flexible support structure and mirror assembly |
| CN111580243A (en) * | 2020-06-05 | 2020-08-25 | 中国科学院长春光学精密机械与物理研究所 | Reflector device |
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