Bonding-free integrated flexible supporting aluminum-based reflector

Abstract

The utility model provides a bonding-free integrated flexible support aluminum-based reflector, which relates to the technical field of structural design of aerial survey camera reflectors and comprises a reflector body, a first flexible ring, a second flexible ring, a second connecting piece, a first connecting piece and a threaded connecting piece. The first flexible ring and the second flexible ring are connected in a matched mode, the first connecting pieces, the second connecting pieces and the threaded connecting pieces are alternately arranged in a staggered mode, the influence of threaded connection stress on the surface shape precision stability of the reflecting mirror is reduced, and meanwhile the reflecting mirror body can be in a free expansion state; the influence of temperature load on the surface shape precision of the reflecting mirror is effectively avoided, and the risk that the surface shape precision and surface shape stability of the reflecting mirror are reduced due to a reflecting mirror bonding process and curing shrinkage of an adhesive layer after bonding in a traditional design is completely eliminated. And the influence of production assembly, bonding and temperature change on the surface shape precision of the reflecting mirror in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of the structural design of a reflecting mirror of an aerial survey camera, in particular to an integrated flexible support aluminum-based reflecting mirror without bonding. Background Technique

[0002] With the continuous improvement of the country's requirements for military reconnaissance capabilities, mass-producing high-quality aerial survey cameras is an important task for each military unit. And how to quickly and stably ensure the surface shape accuracy of the reflecting mirror of the optical system is a difficult problem in the mass production of aerial survey cameras. Therefore, optimizing the design, processing, and alignment technology of the reflecting mirror assembly is the key to improving the mass production efficiency of the optical payload of the aerial survey camera.

[0003] In the design, processing, and alignment process of the reflecting mirror assembly, the most important thing is to ensure that the surface shape accuracy of the reflecting mirror meets the technical index requirements and has good stability, that is, the surface shape accuracy remains unchanged before and after the working conditions change. Therefore, the reflecting mirror assembly of the traditional aerial survey camera optical payload mainly consists of a reflecting mirror and a flexible support structure. The reflecting mirror is used to receive signal light, and the flexible support structure is used to ensure the surface shape accuracy of the reflecting mirror under different temperature and gravity working conditions. In the traditional structural design of the reflecting mirror assembly, the reflecting mirror and the flexible support structure are often designed separately, and then the reflecting mirror and the flexible support structure are bonded together before alignment.

[0004] The design methods in the prior art will bring the following three negative impacts to the reflecting mirror assembly:

[0005] (1) The materials of the reflecting mirror and the flexible support structure are different, and their thermal expansion coefficients are different. When a temperature load is applied, the inconsistent deformation amounts of the two will cause the surface shape accuracy of the reflecting mirror to decrease;

[0006] (2) The adhesive itself will shrink during the curing process, generating thermal stress, which will affect the surface shape accuracy of the reflecting mirror;

[0007] (3) After the reflecting mirror is bonded, the curing time of the adhesive layer is too long, which greatly affects the development cycle of the optical payload and reduces the mass production efficiency of the optical payload.

[0008] In view of the above problems, the commonly used treatment methods in the industry at present are as follows:

[0009] (1) Select a material with a thermal expansion coefficient similar to that of the reflecting mirror as the material of the flexible support structure to avoid the influence of thermal stress caused by the different thermal expansion coefficients of the two on the surface shape accuracy of the reflecting mirror as much as possible; however, no matter how the material is selected, this influence cannot be completely avoided;

[0010] (2) Reasonably select the adhesive and rationally design the bonding process to minimize the impact of the curing shrinkage of the adhesive layer on the surface shape accuracy of the reflector and shorten the curing time, so as to improve the batch production efficiency of the optical payload.

[0011] However, the current treatment methods are not sufficient to completely eliminate the impact of the above problems on the surface shape accuracy of the reflector and the batch production of the optical payload, and can only weaken this impact as much as possible. Utility Model Content

[0012] Therefore, the technical problem to be solved by the present utility model is to overcome the defects in the prior art, so as to provide an integrated flexible support aluminum-based reflector without bonding.

[0013] An integrated flexible support aluminum-based reflector without bonding, comprising: a reflector body, a first flexible ring, a second flexible ring, a second connecting member, a first connecting member and a threaded connecting member. A plurality of first connecting members are evenly distributed along the circumferential direction of the reflector body. The first connecting member is simultaneously connected to the outer ring of the reflector body and the inner ring of the first flexible ring. A plurality of second connecting members are evenly distributed along the circumferential direction of the first flexible ring. The second connecting member is simultaneously connected to the outer ring of the first flexible ring and the inner ring of the second flexible ring. A plurality of threaded connecting members are evenly connected along the circumferential direction of the outer ring of the second flexible ring. The first connecting member, the second connecting member and the threaded connecting member are alternately and staggeredly arranged, and the reflector body, the first flexible ring and the second flexible ring are coaxial.

[0014] Further, the plurality of first connecting members are evenly distributed at intervals of 90° along the circumferential direction of the reflector body.

[0015] Further, the plurality of second connecting members are evenly distributed at intervals of 90° along the circumferential direction of the first flexible ring.

[0016] Further, the plurality of threaded connecting members are evenly distributed at intervals of 90° along the circumferential direction of the outer ring of the second flexible ring.

[0017] Further, the angle between two adjacent second connecting members and first connecting members is 45°.

[0018] Further, the angle between two adjacent second connecting members and threaded connecting members is 45°.

[0019] Further, a plurality of triangular lightening holes are formed on the back of the reflector body.

[0020] Further, the distance between the outer ring of the reflector body and the inner ring of the first flexible ring is 1.5 mm, and the distance between the outer ring of the first flexible ring and the inner ring of the second flexible ring is 1.5 mm.

[0021] Furthermore, a fillet structure is provided at the connection between the first connecting member and the inner ring of the first flexible ring, and a fillet structure is provided at the connections between the second connecting member and the outer ring of the first flexible ring and the inner ring of the second flexible ring.

[0022] Furthermore, the diameter of the mirror body of the reflecting mirror is 260 mm.

[0023] The technical solution of the present utility model has the following advantages:

[0024] 1. An integrated flexible support aluminum-based reflecting mirror provided by the present utility model that does not require bonding, the overall structure of which is integrally processed by a metal material, eliminating the bonding process between the flexible support structure and the reflecting mirror in the traditional design, greatly shortening the development and alignment cycle of the entire reflecting mirror assembly, improving the efficiency of batch R & D and production of optical payloads. Through the cooperation and connection of the first flexible ring and the second flexible ring, and the alternating and staggered arrangement of the first connecting member, the second connecting member and the threaded connecting member, the external stress introduced by the threaded connection during the installation of the mirror body of the reflecting mirror is isolated, greatly reducing the influence of the threaded connection stress on the stability of the surface shape accuracy of the reflecting mirror. At the same time, it can also make the mirror body of the reflecting mirror in a state similar to free expansion, effectively avoiding the influence of temperature load on the surface shape accuracy of the reflecting mirror, and completely eliminating the risk of reducing the surface shape accuracy and surface shape stability of the reflecting mirror caused by the influence of the reflecting mirror bonding process and the shrinkage of the adhesive layer after bonding in the traditional design.

[0025] 2. In the technical solution provided by the present utility model, the spacing distance between the outer ring of the mirror body of the reflecting mirror and the inner ring of the first flexible ring is 1.5 mm, and the spacing distance between the outer ring of the first flexible ring and the inner ring of the second flexible ring is 1.5 mm. The 1.5 mm spacing distance serves as a buffer space for the uneven deformation between the mirror body of the reflecting mirror and the first flexible ring, and at the same time, the 1.5 mm spacing distance also serves as a buffer space for the uneven deformation between the first flexible ring and the second flexible ring, initially isolating the influence of the external stress of the first flexible ring and the second flexible ring on the surface deformation of the mirror body of the reflecting mirror.

[0026] 3. In the technical solution provided by the present utility model, a fillet structure is provided at the connection between the first connecting member and the inner ring of the first flexible ring, and a fillet structure is provided at the connections between the second connecting member and the outer ring of the first flexible ring and the inner ring of the second flexible ring. The fillet structure can reduce stress concentration, ensure flexible connection while improving the connection strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0028] Figure 1 This is a schematic diagram of the overall structure of the present utility model;

[0029] Figure 2 This is a rear view of the overall structure of the present utility model;

[0030] Figure 3 This is a side view of the overall structure of the present utility model;

[0031] Figure 4 This is a sectional view of the overall structure of the present utility model.

[0032] Explanation of reference numerals in the drawings:

[0033] 1 - mirror body; 2 - first flexible ring; 3 - second flexible ring; 4 - second connecting member; 5 - first connecting member; 6 - threaded connecting member; 7 - triangular lightweight hole. Detailed implementation manners

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the drawings. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0035] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0036] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0037] In addition, the technical features involved in different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0038] As shown Figures 1 to 4 An integrated flexible support aluminum-based mirror without bonding, comprising a mirror body 1, a first flexible ring 2, a second flexible ring 3, a second connecting member 4, a first connecting member 5 and a threaded connecting member 6 which are integrally processed and formed. A plurality of first connecting members 5 are evenly distributed along the circumferential direction of the mirror body 1 of the mirror. The first connecting member 5 is simultaneously connected to the outer ring of the mirror body 1 of the mirror and the inner ring of the first flexible ring 2. A plurality of second connecting members 4 are evenly distributed along the circumferential direction of the first flexible ring 2. The second connecting member 4 is simultaneously connected to the outer ring of the first flexible ring 2 and the inner ring of the second flexible ring 3. A plurality of threaded connecting members 6 are evenly connected along the circumferential direction of the outer ring of the second flexible ring 3. The first connecting member 5, the second connecting member 4 and the threaded connecting member 6 are alternately and staggeredly arranged. The mirror body 1 of the mirror, the first flexible ring 2 and the second flexible ring 3 are coaxial.

[0039] For the above integrated flexible support aluminum-based mirror without bonding, the entire structure is integrally processed and formed from a single piece of aluminum alloy material, eliminating the bonding process between the flexible support structure and the mirror in the traditional design, greatly shortening the development and assembly and adjustment cycle of the entire mirror assembly, improving the efficiency of batch R & D and production of optical payloads. Through the cooperation and connection of the first flexible ring 2 and the second flexible ring 3, and the alternate and staggered arrangement of the first connecting member 5, the second connecting member 4 and the threaded connecting member 6, the external stress introduced by the threaded connection during the installation of the mirror body 1 of the mirror is isolated, greatly reducing the influence of the threaded connection stress on the surface shape accuracy stability of the mirror surface. At the same time, it can also make the mirror body 1 of the mirror in a state similar to free expansion, effectively avoiding the influence of temperature load on the surface shape accuracy of the mirror surface, and completely eliminating the risk of reducing the surface shape accuracy and surface shape stability of the mirror surface caused by the influence of the mirror bonding process and the curing shrinkage of the adhesive layer after bonding in the traditional design.

[0040] As shown Figure 1 In this embodiment, a plurality of first connecting members 5 are evenly distributed at intervals of 90° along the circumferential direction of the mirror body 1 of the mirror; the even distribution at intervals of 90° is to reduce stress concentration, make the stress evenly distributed, and thus avoid affecting the surface shape accuracy of the mirror surface.

[0041] As shown Figure 1 In this embodiment, a plurality of second connecting members 4 are evenly distributed at intervals of 90° along the circumferential direction of the first flexible ring 2; the even distribution at intervals of 90° is to reduce stress concentration, make the stress evenly distributed, and thus avoid affecting the surface shape accuracy of the mirror surface.

[0042] As shown Figure 1As shown, in this embodiment, multiple threaded connectors 6 are evenly distributed at intervals of 90° in the circumferential direction of the outer ring of the second flexible ring 3. When the optical load is actually used, the integrated flexible support aluminum-based mirror is fixedly installed on the main load-bearing structure in the optical system through the cooperation of the threaded connectors 6 and bolts, so that the integrated flexible support aluminum-based mirror is installed. The even distribution at intervals of 90° is to reduce stress concentration, make the stress evenly distributed, and thus avoid affecting the surface shape accuracy of the mirror surface.

[0043] As Figure 1 shown, in this embodiment, the angle between two adjacent second connectors 4 and first connectors 5 is 45°. The second connectors 4 and the first connectors 5 are arranged in a staggered manner at an interval angle of 45° to reduce stress concentration, make the stress evenly distributed, and thus avoid affecting the surface shape accuracy of the mirror surface.

[0044] As Figure 1 shown, in this embodiment, the angle between two adjacent second connectors 4 and threaded connectors 6 is 45°. The second connectors 4 and the threaded connectors 6 are arranged in a staggered manner at an interval angle of 45° to reduce stress concentration, make the stress evenly distributed, and thus avoid affecting the surface shape accuracy of the mirror surface.

[0045] As Figure 2 shown, in this embodiment, a plurality of triangular lightweight holes 7 are formed on the back of the mirror body 1. The triangular lightweight holes 7 are for the lightweight design of the integrated flexible support aluminum-based mirror to reduce the weight of the aluminum-based mirror.

[0046] As Figure 1 shown, in this embodiment, the spacing distance between the outer ring of the mirror body 1 and the inner ring of the first flexible ring 2 is 1.5 mm, and the spacing distance between the outer ring of the first flexible ring 2 and the inner ring of the second flexible ring 3 is 1.5 mm. The 1.5 mm spacing distance serves as a buffer space for the non-uniform deformation between the mirror body 1 and the first flexible ring 2. At the same time, the 1.5 mm spacing distance also serves as a buffer space for the non-uniform deformation between the first flexible ring 2 and the second flexible ring 3, initially isolating the influence of the external stress of the first flexible ring 2 and the second flexible ring 3 on the mirror surface deformation of the mirror body 1.

[0047] As Figure 1 shown, in this embodiment, a fillet structure is provided at the connection between the first connector 5 and the inner ring of the first flexible ring 2, and a fillet structure is provided at the connections between the second connector 4 and the outer ring of the first flexible ring 2 and the inner ring of the second flexible ring 3. The fillet structure can reduce stress concentration, ensure flexible connection while improving the connection strength.

[0048] As Figure 1 and Figure 2As shown, in this embodiment, the diameter of the mirror body 1 of the reflector is 260 mm; the inner diameter of the first flexible ring 2 is 263 mm, and the outer diameter of the first flexible ring 2 is 267 mm; the inner diameter of the second flexible ring 3 is 270 mm, and the outer diameter of the second flexible ring 3 is 274 mm; the ring widths of the first flexible ring 2 and the second flexible ring 3 are both 2 mm. In actual design, according to different working conditions and design index requirements, the specific design details such as the specific dimensions, quantities, and position distributions of the mirror body 1 of the reflector, the first flexible ring 2, the second flexible ring 3, the second connecting member 4, the first connecting member 5, the threaded connecting member 6, and the triangular lightweight holes 7 can all be adjusted accordingly.

[0049] As Figure 1 shown, in this embodiment, when machining the integrated flexible support aluminum-based reflector, first, an initial shape is integrally machined from a metal material according to requirements. The initial shape of the integral machining includes the mirror body 1 of the reflector, the first flexible ring 2, the second flexible ring 3, the second connecting member 4, and the first connecting member 5. Then, the threaded connecting member 6 is machined. Next, a 1.5-mm spacing distance is machined between the first flexible ring 2 and the mirror body 1, and a 1.5-mm spacing distance is machined between the first flexible ring 2 and the second flexible ring 3. Then, array machining is performed on the multiple triangular lightweight holes 7 on the back of the mirror body 1 of the reflector. Finally, the mirror surface of the mirror body 1 of the reflector is finely machined until its surface shape accuracy meets the design index requirements.

[0050] Obviously, the above embodiments are merely examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. An integrated flexible support aluminum-based reflector without bonding, characterized in that: include: A reflector body (1), a first flexible ring (2), a second flexible ring (3), a second connecting piece (4), a first connecting piece (5) and a threaded connecting piece (6); a plurality of first connecting pieces (5) are evenly distributed along the circumferential direction of the reflector body (1); the first connecting piece (5) is simultaneously connected to the outer ring of the reflector body (1) and the inner ring of the first flexible ring (2); a plurality of second connecting pieces (4) are evenly distributed along the circumferential direction of the first flexible ring (2); the second connecting piece (4) is simultaneously connected to the outer ring of the first flexible ring (2) and the inner ring of the second flexible ring (3); a plurality of threaded connecting pieces (6) are evenly connected along the circumferential direction of the outer ring of the second flexible ring (3); the first connecting piece (5), the second connecting piece (4) and the threaded connecting piece (6) are alternately staggered; the reflector body (1), the first flexible ring (2) and the second flexible ring (3) are coaxial.

2. The integrated flexible support aluminum-based reflector without bonding according to claim 1, characterized in that: The plurality of first connecting members (5) are evenly distributed at intervals of 90° in the circumferential direction of the reflector body (1).

3. The integrated flexible support aluminum-based reflector without bonding according to claim 1, characterized in that: A plurality of the second connecting members (4) are evenly distributed in the circumferential direction of the first flexible ring (2) at intervals of 90°.

4. The integrated flexible support aluminum-based reflector without bonding according to claim 1, characterized in that: The plurality of threaded connectors (6) are evenly distributed at intervals of 90° in the circumferential direction of the outer ring of the second flexible ring (3).

5. The integrated flexible support aluminum-based reflector without bonding according to claim 1, characterized in that: The angle between two adjacent second connecting members (4) and first connecting members (5) is 45°.

6. The integrated flexible support aluminum-based reflector without bonding according to claim 1, characterized in that: The angle between two adjacent second connecting members (4) and threaded connecting members (6) is 45°.

7. The integrated flexible support aluminum-based reflector without bonding according to claim 1, characterized in that: The back of the reflector body (1) is provided with a plurality of triangular lightweight holes (7).

8. The integrated flexible support aluminum-based reflector without bonding according to claim 1, characterized in that: The spacing distance between the outer ring of the reflector body (1) and the inner ring of the first flexible ring (2) is 1.5 mm, and the spacing distance between the outer ring of the first flexible ring (2) and the inner ring of the second flexible ring (3) is 1.5 mm.

9. The integrated flexible support aluminum-based reflector without bonding according to claim 1, characterized in that: A rounded corner structure is provided at the connection between the first connecting member (5) and the inner ring of the first flexible ring (2), and a rounded corner structure is provided at the connection between the second connecting member (4) and the outer ring of the first flexible ring (2) and the inner ring of the second flexible ring (3).

10. The integrated flexible support aluminum-based reflector without bonding according to claim 1, characterized in that: The diameter of the reflector body (1) is 260 mm.

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