CN115542512B - A flexible support structure for reducing the bonding deformation of a swing mirror - Google Patents
A flexible support structure for reducing the bonding deformation of a swing mirror Download PDFInfo
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- CN115542512B CN115542512B CN202211311039.6A CN202211311039A CN115542512B CN 115542512 B CN115542512 B CN 115542512B CN 202211311039 A CN202211311039 A CN 202211311039A CN 115542512 B CN115542512 B CN 115542512B
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- flexible
- flexible joint
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- swing mirror
- boss
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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
- G02B7/185—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors with means for adjusting the shape of the mirror surface
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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
- G02B7/181—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors with means for compensating for changes in temperature or for controlling the temperature; thermal stabilisation
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mounting And Adjusting Of Optical Elements (AREA)
Abstract
本发明提供了一种减小摆镜粘接变形的柔性支撑结构，属于航空航天技术领域；本发明的柔性支撑结构包括基座安装孔、柔性支撑座和摆镜粘接凸台，柔性支撑座设置呈圆周120°均匀分布的弧形柔性槽，摆镜粘接凸台为局部粘接式，外凸处与摆镜中心圆形安装孔粘接；本发明采用总计六个弧形柔性槽，可有效减小摆镜结构在受到重力载荷和温度载荷下的刚体位移，降低载荷对摆镜的面形精度影响，同时局部粘接式的凸台结构在与摆镜安装孔粘接时可以在保证安装强度前提下减小由于粘接应力对摆镜面形造成的不利影响。
The present invention provides a flexible support structure for reducing the bonding deformation of a swing mirror, and belongs to the field of aerospace technology; the flexible support structure of the present invention comprises a base mounting hole, a flexible support seat and a swing mirror bonding boss, the flexible support seat is provided with arc-shaped flexible grooves uniformly distributed at a circumference of 120°, the swing mirror bonding boss is a local bonding type, and the outer convex part is bonded to the central circular mounting hole of the swing mirror; the present invention adopts a total of six arc-shaped flexible grooves, which can effectively reduce the rigid body displacement of the swing mirror structure under gravity load and temperature load, and reduce the influence of the load on the surface accuracy of the swing mirror, and at the same time, the local bonding boss structure can reduce the adverse effect of the bonding stress on the surface shape of the swing mirror under the premise of ensuring the mounting strength when bonding with the swing mirror mounting hole.
Description
Technical Field
The invention belongs to the technical field of aerospace, and particularly relates to a flexible supporting structure for reducing bonding deformation of a swing mirror.
Background
The airborne laser communication device is used as an important tool for strategic support of modern aircrafts, can establish communication links with other aircrafts or ground terminals in an flying state, and has the advantages of high speed, high gain, small volume, light weight, electromagnetic interference resistance, difficult interception and the like. The airborne platform is taken as an excellent carrier for expanding the application space of laser communication, and is an indispensable communication means in the future.
The swing mirror assembly is used as an important component of laser communication equipment to determine the stability of laser communication, and is required to have the characteristic of strong resistance to external dynamic interference, so that the deformation of the swing mirror surface under the airborne condition is ensured to be small. On the one hand, the swing mirror assembly can generate elastic deformation to a certain extent when being subjected to gravity load and temperature load, so that the precision of the swing mirror surface is degraded, and the laser communication stability is affected. In order to reduce the influence of elastic deformation caused by the two loads on the shape of the swinging mirror, the swinging mirror and the flexible supporting structure are adhered and then fixed on the backboard in a gluing mode. On the other hand, the adhesive joint has the advantages of compact structure, flexible design, safety, reliability and capability of effectively unloading assembly stress, but the optical adhesive inevitably brings stress due to volume shrinkage in the curing process, mainly comprises the step that the adhesive spot adhesive area generates shrinkage force on a reflecting mirror, and meanwhile, the optical adhesive with larger expansion coefficient also generates redundant additional stress along with the change of the environmental temperature, and also can have adverse effect on the precision of a swinging mirror surface.
The swing mirror structure for airborne laser communication is often ultrathin, and brings great challenges to the design of the flexible support structure. The influence of the gravity temperature load and the residual stress of the cementing on the swinging mirror surface is difficult to eliminate by the traditional flexible supporting structure, so that the reasonable-design flexible supporting structure is required, and the influence of the external load and the optical cement solidification shrinkage stress on the swinging mirror surface shape precision is reduced while the fixed strength, the stability and the effective positioning of the swinging mirror assembly are met.
Disclosure of Invention
The invention aims to provide a flexible support structure of a swinging mirror, which solves the problems that the external load swinging mirror has large influence on the surface shape and the requirement on the adhesive technology level is high in assembly, and the surface shape precision does not meet the requirement on laser communication indexes due to adhesive stress after assembly.
The flexible supporting structure can give the swing mirror high rigidity and firm support, effectively reduce the influence of thermal load and gravity load on the shape precision of the swing mirror, and simultaneously reduce the influence of additional stress generated in the bonding connection process of the flexible supporting structure and the swing mirror on the shape precision of the swing mirror, thereby effectively ensuring the shape precision index requirement of the swing mirror and providing guarantee for realizing airborne laser communication.
The technical scheme of the invention is to provide a swing mirror flexible supporting structure suitable for airborne laser communication equipment, which comprises a flexible joint mounting base, a flexible joint base plate and a flexible joint bonding boss.
The flexible joint is characterized in that the flexible joint is fixedly arranged on a swing mirror mounting substrate, is connected with the swing mirror mounting substrate in an adapting mode through a flexible joint mounting base, a flexible joint bonding boss is connected with a swing mirror mounting hole in an adapting mode, three flexible joint mounting bases on the flexible joint are evenly distributed on the periphery of the flexible substrate, two flexible joint base mounting holes connected with the swing mirror mounting substrate are formed in each mounting base, grooves on the outer side of the three flexible joints and grooves on the inner side of the three flexible joints on the flexible joint substrate are respectively distributed at intervals on the inner side and the outer side of the substrate, and three flexible joint bonding faces and three flexible joint hollowed-out faces on the flexible bonding boss are respectively distributed at intervals.
Further, the three flexible joint mounting bases are uniformly distributed on the periphery of the flexible substrate at 120 degrees, and the flexible joint base mounting holes are light holes with the diameter of 3.3 mm;
Further, a 0.5mm boss is arranged below the three flexible joint mounting bases, the bottom surface of the boss is in contact connection with a flexible joint base mounting boss on the swing mirror mounting base plate, the flexible joint base mounting boss is provided with a flexible joint base mounting boss threaded hole which is matched with the flexible joint base mounting hole, and the size of the threaded hole is M3;
further, the three outer side slotting of the flexible joint and the three inner side slotting of the flexible joint are uniformly distributed on the flexible substrate at 120 degrees, the slotting radian is 90 degrees, and the slotting width is 1.5mm;
Further, the three soft joint bonding surfaces and the three soft joint hollowed-out surfaces are uniformly distributed on the soft joint bonding boss at 120 degrees, the radian of the soft joint bonding surface is 60 degrees, and the radian of the soft joint hollowed-out surface is 50 degrees;
Further, the three flexible joint bonding bosses are trapezoid cylindrical bosses, the height of the flexible joint bonding bosses is 10mm, and the flexible joint bonding surfaces are tapered surfaces with taper of 1:10;
Further, the thermal expansion coefficients of the swing mirror body, the swing mirror flexible supporting structure and the swing mirror mounting substrate are matched.
Compared with the prior art, the invention has the following beneficial effects:
1. The flexible supporting structure suitable for reducing the bonding deformation of the swing mirror can be used for
2. The swing mirror is fixed on the swing mirror mounting substrate in a flexible supporting mode, and when the external gravity direction, the temperature and the vibration environment change, the flexible supporting plays a role in isolating deformation and stress, so that the influence on the mirror surface of the swing mirror is effectively reduced.
3. The flexible supporting structure suitable for reducing the bonding deformation of the swing mirror provided by the invention has the advantages that the thermal expansion coefficients of the component materials are matched, the circumference is symmetrical, and the thermal stability of the system is effectively improved.
4. By arranging the secondary reflector condition gasket and the correction mirror gasket, the positions of the secondary mirror and the correction mirror can be conveniently adjusted in the installation and debugging process, and the system achieves the functionality required by an optical system.
Drawings
Fig. 1 is a schematic diagram of a swing mirror flexible joint structure of an airborne laser communication device in an embodiment of the invention;
FIG. 2 is a forward explosion diagram of a swing mirror flexible joint substrate mounting of an on-board laser communication device in an embodiment of the invention;
FIG. 3 is a side exploded view of an installation of a swing mirror flexible substrate of an on-board laser communication device in an embodiment of the invention;
Reference numerals illustrate:
1-flexible joint, 11-flexible joint mounting base, 111-flexible joint base mounting hole, 12-flexible joint base plate, 121-flexible joint outer side grooving, 122-flexible joint inner side grooving, 13-flexible joint bonding boss, 131-flexible joint bonding surface, 132-flexible joint hollowed surface, 2-swinging mirror, 21-swinging mirror mounting hole, 22-swinging mirror hollowed groove, 3-swinging mirror mounting base plate, 31-flexible joint base mounting boss, 311-flexible joint base mounting boss threaded hole, 32-swinging mirror mounting base plate rotating shaft and 33-swinging mirror mounting base plate hollowed groove
Detailed description of the preferred embodiments
The invention is further described below with reference to the drawings and examples.
Referring to fig. 1-3, the flexible supporting structure for reducing bonding deformation of a swing mirror comprises a flexible joint mounting base 11, a flexible substrate 12 and flexible joint bonding bosses 13, wherein the flexible joint 1 is fixedly mounted on the swing mirror mounting substrate 3, the flexible joint bonding bosses 13 are connected with the swing mirror mounting substrate 3 in an adapting manner, the three flexible joint mounting bases 11 on the flexible joint are uniformly distributed on the periphery of the flexible joint substrate 12, two flexible joint base mounting holes 111 connected with the swing mirror mounting substrate 3 are formed in each mounting base, three flexible joint outer side grooves 121 and three flexible joint inner side grooves 122 on the flexible joint substrate 12 are respectively distributed at intervals on the inner side and the outer side of the substrate, and three flexible joint bonding surfaces 131 and three flexible joint hollow surfaces 132 on the flexible joint bonding bosses 13 are respectively distributed at intervals.
The three flexible joint mounting bases 11 are uniformly distributed at the periphery of the flexible substrate 12 at 120 degrees, and the flexible joint base mounting holes 111 are light holes with the diameter of 3.3 mm;
A 0.5mm boss is arranged below the three flexible joint mounting bases 11, the bottom surface of the boss is in contact connection with a flexible joint base mounting boss 31 on the swing mirror mounting base plate 3, the flexible joint base mounting boss 31 is provided with a flexible joint base mounting boss threaded hole 311 which is matched and mounted with the flexible joint base mounting hole 111, and the size of the threaded hole is M3;
The three outer side grooves 121 and the three inner side grooves 122 of the flexible joint are uniformly distributed on the flexible substrate 12 at 120 degrees, the radian of the grooves is 90 degrees, and the width of the grooves is 1.5mm;
The three soft joint bonding surfaces 131 and the three soft joint hollowed-out surfaces 132 are uniformly distributed on the soft joint bonding boss 13 at 120 degrees, the radian of the soft joint bonding surfaces 131 is 60 degrees, and the radian of the soft joint hollowed-out surfaces 132 is 50 degrees;
The flexible joint bonding boss 13 is a trapezoid cylindrical boss, the height of the flexible joint bonding boss 13 is 10mm, and the flexible joint bonding surface 131 is a conical surface with the taper of 1:10;
The swing mirror mounting hole 21 is a conical hole, the taper is 1:10, and the swing mirror mounting hole and the flexible joint bonding surface 131 are provided with matching surfaces with the same size for glue joint mounting.
The flexible joint 1, the swinging mirror 2 and the swinging mirror mounting substrate 3 are made of materials with the same thermal expansion coefficients, the flexible joint 1 is made of invar steel materials, the swinging mirror 2 is made of microcrystalline glass materials, and the swinging mirror mounting substrate 3 is made of titanium alloy materials.
The flexible supporting structure for reducing the bonding deformation of the swing mirror utilizes the bending elastic deformation of the flexible joint outer side groove 121 and the flexible joint inner side groove 122, and can generate tiny displacement between the swing mirror mounting hole 21 and the flexible joint base mounting boss 31, so that the internal stress of the airborne laser communication swing mirror assembly caused by temperature load and assembly error can be eliminated. The central axes of the flexible joint outer side groove 121 and the flexible joint inner side groove 122 are intersected at a point, the focus is overlapped with the mass center of the swinging mirror 1, the deformation of the mirror surface of the swinging mirror caused by gravity moment can be reduced, and the precision of the mirror surface of the swinging mirror can be improved. The flexible joint bonding surface 131 and the flexible joint hollowed-out surface 132 are alternately arranged in the flexible joint bonding boss 13, the three flexible joint bonding surfaces 131 are in adhesive joint fit with the swinging mirror mounting hole 21 to ensure the supporting strength, the three flexible joint hollowed-out surfaces 132 eliminate the residual stress generated by optical adhesive bonding, the stability of a flexible joint supporting structure is ensured, the influence on the deformation of the swinging mirror is reduced, and the precision of the swinging mirror surface is effectively improved.
Finally, it should be noted that the foregoing examples merely illustrate embodiments of the present invention, and are not intended to limit the invention, and those skilled in the art may modify the specific embodiments described in the foregoing examples or substitute some of the technical features thereof equally, and these modifications or substitutions fall within the scope of the protection scheme of the present invention.
Claims (8)
1. The flexible supporting structure for reducing the bonding deformation of the swing mirror is characterized by comprising a flexible joint mounting base (11), a flexible substrate (12) and a flexible joint bonding boss (13), wherein the central lines of the flexible joint mounting base (11), the flexible substrate (12) and the flexible joint bonding boss (13) are coaxial, the flexible joint mounting base (11) is in adaptive connection with the swing mirror mounting base (3), and the flexible joint bonding boss (13) is in adaptive connection with the swing mirror mounting hole (21);
The flexible joint comprises three flexible joint mounting bases (11) which are uniformly distributed on the periphery of a flexible substrate (12), and each mounting base is provided with two flexible joint base mounting holes (111) connected with a swing mirror mounting substrate (3);
the flexible substrate (12) comprises three flexible joint outer side grooves (121) and three flexible joint inner side grooves (122), and the flexible joint outer side grooves (121) and the flexible joint inner side grooves (122) are respectively distributed at intervals on the inner side and the outer side of the substrate;
The flexible joint bonding boss (13) comprises three flexible joint bonding surfaces (131) and three flexible joint hollowed-out surfaces (132), the three flexible joint hollowed-out surfaces (132) are located on the inner side, the three flexible joint bonding surfaces (131) are located on the outer side, the flexible joint bonding surfaces (131) and the flexible joint hollowed-out surfaces (132) are distributed at intervals respectively, and adjacent ends of the flexible joint bonding surfaces (131) and the flexible joint hollowed-out surfaces (132) are connected to form an annular structure.
2. The flexible supporting structure for reducing bonding deformation of a swing mirror according to claim 1, wherein the three flexible joint mounting bases (11) are uniformly distributed on the periphery of the flexible substrate (12) at an angle of 120 degrees, and the flexible joint base mounting holes (111) are light holes with a diameter of 3.3 mm.
3. The flexible supporting structure for reducing bonding deformation of a swing mirror according to claim 1, wherein 0.5mm bosses are arranged below the three flexible mounting bases (11), the bottom surfaces of the bosses are in contact connection with flexible base mounting bosses (31) on the swing mirror mounting base plate (3), the flexible base mounting bosses (31) are provided with flexible base mounting boss threaded holes (311) which are matched and mounted with flexible base mounting holes (111), and the size of the threaded holes is M3.
4. The flexible support structure for reducing bonding deformation of a swing mirror according to claim 1, wherein three outer side grooves (121) and three inner side grooves (122) of the flexible joint are uniformly distributed on the flexible substrate (12) at an angle of 120 degrees, the radian of the grooves is 90 degrees, and the width of the grooves is 1.5mm.
5. The flexible supporting structure for reducing bonding deformation of a swing mirror according to claim 1, wherein three flexible joint bonding surfaces (131) and three flexible joint hollowed-out surfaces (132) are uniformly distributed on the flexible joint bonding boss (13) at an angle of 120 degrees, the radian of the flexible joint bonding surfaces (131) is 60 degrees, and the radian of the flexible joint hollowed-out surfaces (132) is 50 degrees.
6. The flexible supporting structure for reducing bonding deformation of a swing mirror according to claim 1, wherein the flexible joint bonding boss (13) is a trapezoid cylindrical boss, the height of the flexible joint bonding boss (13) is 10mm, the minimum outer diameter of a top flexible joint bonding surface is 55mm, and the maximum outer diameter of a bottom flexible joint bonding surface is 56mm.
7. The flexible support structure for reducing the bonding deformation of a swing mirror according to claim 1, wherein the flexible support structure comprises a flexible joint mounting base (11), a flexible substrate (12) and a flexible joint bonding boss (13) which are integrally formed.
8. The flexible support structure for reducing bonding deformation of a swing mirror of claim 1, wherein the flexible support structure is formed from invar material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211311039.6A CN115542512B (en) | 2022-10-25 | 2022-10-25 | A flexible support structure for reducing the bonding deformation of a swing mirror |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211311039.6A CN115542512B (en) | 2022-10-25 | 2022-10-25 | A flexible support structure for reducing the bonding deformation of a swing mirror |
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| Publication Number | Publication Date |
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| CN115542512A CN115542512A (en) | 2022-12-30 |
| CN115542512B true CN115542512B (en) | 2025-01-21 |
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| CN202211311039.6A Active CN115542512B (en) | 2022-10-25 | 2022-10-25 | A flexible support structure for reducing the bonding deformation of a swing mirror |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105204159A (en) * | 2015-09-22 | 2015-12-30 | 中国科学院西安光学精密机械研究所 | Reduce stress deformation's high accuracy pendulum mirror structure |
| CN107121753A (en) * | 2017-05-27 | 2017-09-01 | 中国科学院上海技术物理研究所 | A kind of integrated bidimensional pivoting flexible hinge |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4602542B2 (en) * | 2000-12-18 | 2010-12-22 | オリンパス株式会社 | Mirror oscillator for optical deflector |
| KR100743315B1 (en) * | 2005-08-26 | 2007-07-26 | 엘지전자 주식회사 | Micro Mirror Device and Micro Mirror Device Array Using the Same |
| CN112433338B (en) * | 2020-11-27 | 2021-12-14 | 中国科学院西安光学精密机械研究所 | Swing mirror assembly, swing mirror assembly assembling and adjusting system and assembling and adjusting method |
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2022
- 2022-10-25 CN CN202211311039.6A patent/CN115542512B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105204159A (en) * | 2015-09-22 | 2015-12-30 | 中国科学院西安光学精密机械研究所 | Reduce stress deformation's high accuracy pendulum mirror structure |
| CN107121753A (en) * | 2017-05-27 | 2017-09-01 | 中国科学院上海技术物理研究所 | A kind of integrated bidimensional pivoting flexible hinge |
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| CN115542512A (en) | 2022-12-30 |
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