CN110275271B - Connecting structure of reflector and rotating shaft - Google Patents
Connecting structure of reflector and rotating shaft Download PDFInfo
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- CN110275271B CN110275271B CN201910633991.XA CN201910633991A CN110275271B CN 110275271 B CN110275271 B CN 110275271B CN 201910633991 A CN201910633991 A CN 201910633991A CN 110275271 B CN110275271 B CN 110275271B
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- reflector
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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
- G02B7/1821—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors for rotating or oscillating mirrors
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Abstract
The invention discloses a connecting structure of a reflector and a rotating shaft, and belongs to the technical field of optical imaging. The method comprises the following steps: the device comprises a shaft base, an adjusting block and a reflecting mirror; the shaft base is provided with a mounting plate; one end of the adjusting block is fixedly connected with the mounting plate; the reflector is close to an inner ring structure of the reflector is arranged on one end face of the mounting plate, and the reflector is fixedly connected with the mounting plate through the inner ring structure of the reflector and the adjusting block. The method has the characteristics of reducing the installation deformation of the reflector and improving the imaging quality.
Description
Technical Field
The invention relates to a connecting structure, in particular to a high-imaging-quality reflector and rotating shaft connecting structure, and belongs to the technical field of optical imaging.
Background
The infrared detection system gradually becomes an important subsystem in the precise guided weapon due to the characteristics of high precision, high sensitivity, high resolution, high frame frequency, strong anti-interference performance and the like, and is widely applied to the fields of guided missiles, precise guided bombs and the like.
The optical system plays a crucial role in the infrared detection system, and the quality of the imaging index of the optical system directly influences the performance of the infrared detection system. In the complete optical path of some optical systems, there is a mirror load driven by a servo mechanism, and the mirror is connected with a shaft into a whole and moves together with a servo system.
Conventionally, a non-reflecting surface of a reflector is often processed with a screw hole, and a screw passes through a shaft and is screwed into the screw hole of the reflector to be fastened. Although the processing precision of the reflector and the shaft is high, and the reflector is often designed with a complex stress isolation structure, the effect is generally not ideal. Stress deformation caused by screwing in the screw leads to the deterioration of the flatness of the reflecting surface of the reflector, influences the surface type of the reflector and reduces the imaging quality of the whole optical system.
Therefore, it is necessary to design a new connecting structure for solving the deformation of the mirror caused by the connection between the mirror and the shaft, thereby improving the imaging quality.
Disclosure of Invention
The invention aims to provide a connecting structure of a reflector and a rotating shaft, which has the characteristics of reducing the installation deformation of the reflector and improving the imaging quality.
The invention relates to a connecting structure of a reflector and a rotating shaft, which comprises: the device comprises a shaft base, an adjusting block and a reflecting mirror; the shaft base is provided with a mounting plate; one end of the adjusting block is fixedly connected with the mounting plate; the reflector is close to an inner ring structure of the reflector is arranged on one end face of the mounting plate, and the reflector is fixedly connected with the mounting plate through the inner ring structure of the reflector and the adjusting block.
Furthermore, the bottom of mounting panel is provided with a plurality of first mounting holes, the bottom of adjusting block is provided with a plurality of second mounting holes, each adjusting block with the mounting panel is through at least two first mounting holes and at least two the second mounting hole is with first screw cooperation spiral fixed connection.
Furthermore, an axis reference surface is further arranged on one end face, close to the reflector, of the mounting plate, and provides a mounting reference for mounting the reflector.
Further, the shaft reference surface is in matched nested connection with the inner circular ring structure of the reflector.
Furthermore, a reflector reference surface is further arranged on the reflector, and the reflector reference surface is in contact with the shaft reference surface and used for controlling the installation precision of the reflector.
Furthermore, a third mounting hole is formed in the side wall of the shaft reference surface, a fourth mounting hole is formed in the side wall of the adjusting block, a fifth mounting hole is formed in the side wall of the inner circular ring structure of the reflector, and the mounting plate, the adjusting block and the reflector are fixedly connected in a spiral mode through a second screw in the third mounting hole and the fourth mounting hole and the fifth mounting hole.
Furthermore, a local plane structure is arranged on the side wall of the inner circular ring structure of the reflector, and the fifth mounting hole is arranged on the local plane structure.
Further, the mounting plate is a circular mounting plate; the bottom of the circular mounting plate is symmetrically provided with four adjusting blocks.
Furthermore, a flat washer and a spring washer are sleeved on the first screw and then used for fixing the mounting plate and the adjusting block.
Furthermore, the adjusting block is of a T-shaped structure, the long end of the T-shaped structure is in contact with the mounting plate, and the short end of the T-shaped structure is of an outer arc structure; the surface of the inner circular ring structure of the reflector is of an inner circular arc structure, and the outer circular arc structure and the inner circular arc structure form circular surface contact.
The working principle of the connecting structure of the reflector and the rotating shaft is as follows: placing the reflector on the upper surface of the shaft base mounting plate, using an adjusting block, preferably using an adjusting block with a T-shaped structure, wherein one end of the long end surface of the T-shaped structure is propped against the upper surface of the mounting plate, one end of the short end surface with an outer circular surface is propped against the inner surface of an inner circular ring structure of the reflector, a second screw sequentially penetrates through a third mounting hole on a shaft base surface on the mounting plate and a fourth mounting hole on the side wall of the adjusting block and is screwed into a fifth mounting hole on the side wall of the inner circular ring structure of the reflector, and the end surface of the screw is pressed on a local plane structure on the inner circular ring structure of the reflector; when the second screw is screwed in, the surface of the inner ring structure of the reflector and the outer circle surface of the adjusting block form local circular surface matching, and the posture of the adjusting block can be adjusted in a self-adaptive manner along with the screwing in of the second screw. And observing the fringes of the interferometer in the screwing process, and fixing the adjusting block by using a flat washer, a spring washer and a first screw after the second screw is screwed down and the fringes are uniform, namely after the surface type of the reflector is judged to be qualified, so that the reflector and the shaft base are reliably fixed, the good surface type of the reflector is ensured, and the imaging quality is improved. This structural design is novel, and the installation is transferred conveniently, can effectively reduce because the stress that the screw connection speculum brought is to the adverse effect of speculum plane degree, improves the speculum face type, and then improves the imaging quality.
The technical scheme of the invention has the following beneficial effects:
(1) according to the connecting structure of the reflector and the rotating shaft, the reflector inner circular ring structure is arranged on the reflector, the reflector is fixedly connected with the shaft base through the reflector inner circular ring structure and the adjusting block in sequence, the structure that the reflector is directly provided with the connecting hole to be connected with the shaft base in the prior art is replaced, the connecting structure has high connecting precision, a complex stress isolation structure is not needed, the problem of stress deformation of the reflector surface caused by screwing in screws is solved, the connecting structure has the characteristics of reducing the mounting deformation of the reflector and improving the imaging quality, and the imaging quality of the whole optical system of the reflector surface type is improved.
(2) According to the connecting structure of the reflector and the rotating shaft, particularly, the adjusting block is arranged to be of a T-shaped structure, the short end of the T-shaped structure is of an outer arc structure, the surface of an inner ring structure of the reflector is of an inner arc structure, the outer arc structure and the inner arc structure form circular surface contact, when the adjusting block is used for adjusting the posture of the adjusting block in a self-adaptive mode in the screwing process of the second screw, the state enabling the reflector surface to be optimal is easier to find, the reflector, the adjusting block and the shaft base are relatively fixed through other standard components, the reflector surface is optimal, and imaging quality is improved. The connecting structure has the advantages of simple part processing and convenient assembly and adjustment, and can improve the quality of the reflector surface type, thereby improving the imaging quality.
Drawings
FIG. 1 is a perspective view of a high imaging quality mirror and shaft connection structure of FIG. 1;
FIG. 2 is a sectional view of a high image quality mirror and shaft connection structure 1;
FIG. 3 is a sectional view of a high imaging quality mirror and shaft connection structure 2;
FIG. 4 is a perspective view of a high imaging quality mirror and spindle connection structure of FIG. 2;
FIG. 5 is a perspective view of the adjustment block;
FIG. 6 is a perspective view of the reflector (non-reflective surface);
FIG. 7 is an isometric view;
1. a shaft base; 11. mounting a plate; 12. a first mounting hole; 13. a shaft reference plane; 14. third mounting hole
2. An adjusting block; 21. a second mounting hole; 22. a fourth mounting hole;
3. a mirror; 31. a reflector inner ring structure; 32. a fifth mounting hole; 33. a mirror reference plane; 34. a local planar structure;
4. a flat washer;
5. a spring washer;
6. a first screw;
7. a second screw;
8. a reflective surface.
Detailed Description
The technical solutions of the present invention are described clearly and completely below, and it is obvious that the described embodiments are some, not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
First, the first screw, the second screw, the flat washer 4 and the spring washer 5 used in the present invention are standard parts. Further preferred in the embodiments described below are M2X 6 screws GB/T70.1-2000, M2.5X 6 screws GB/T70.1-2000, flat washers GB/T848-2002, and spring washers QJ 2963.2-1997; the shaft base is a self-made piece made of 20Cr13, and the reflector is a self-made piece made of optical aluminum-based silicon carbide composite material and with a gold-plated reflecting surface.
In the present embodiment, as shown in fig. 1 to 4, a connecting structure of a mirror and a rotating shaft includes: the device comprises a shaft base 1, wherein a mounting plate 11 is arranged on the shaft base 1; one end of the adjusting block 2 is fixedly connected with the mounting plate 11; the reflecting mirror 3 is close to on the reflecting mirror 3 a reflecting mirror inner ring structure 31 is arranged on one end face of the mounting plate 11, and the reflecting mirror 3 passes through the reflecting mirror inner ring structure 31, the adjusting block 2 and the mounting plate 11 are fixedly connected.
Further, with reference to the above embodiments, in this embodiment, as shown in fig. 1, fig. 5 and fig. 7, a plurality of first mounting holes 12 are provided at the bottom of the mounting plate 11, a plurality of second mounting holes 21 are provided at the bottom of the adjusting block 2, and each of the adjusting block 2 and the mounting plate 11 is fixedly connected with the first screw 6 by at least two first mounting holes 12, at least two second mounting holes 21 and a screw. In this embodiment, it is further preferable that the mounting plate 11 is a circular mounting plate; the bottom symmetry of ring shape mounting panel is provided with four adjusting block 2, at this moment, four adjusting block all through two second mounting holes on each adjusting block and two on the mounting panel 11 first mounting hole cooperation is through first screw spiral fixed connection.
Further, in combination with the above embodiments, in this embodiment, as shown in fig. 7, a shaft reference surface 13 is further disposed on an end surface of the mounting plate 11 close to the reflector 3, and the shaft reference surface 13 is in fit-and-nesting connection with the reflector inner ring structure 31. This fitting structure makes the shaft reference surface 13 possible to provide a mounting reference for the mirror mounting, further ensuring the mirror mounting accuracy by simple structural fitting.
Further, with reference to the foregoing embodiment, in this embodiment, as shown in fig. 6, a reflector reference surface 33 is further disposed on the reflector 3, and the reflector reference surface 33 contacts with the shaft reference surface 13, so that the reflector is disposed in the mounting process, and the reflector reference surface is matched with the shaft reference surface on the shaft base, on one hand, the mounting of the reflector is facilitated due to the disposition of the reflector reference surface, and on the other hand, the mounting accuracy of the reflector can be controlled more conveniently.
Further, in the present embodiment, as shown in fig. 5, 6 and 7, a third mounting hole 14 is provided on a side wall of the shaft reference surface 13, a fourth mounting hole 22 is provided on a side wall of the adjusting block 2, a fifth mounting hole 32 is provided on a side wall of the mirror inner ring structure 31, and the mounting plate 11, the adjusting block 2 and the mirror 3 are screwed and fixed by the second screw 7 through the third mounting hole 14, the fourth mounting hole 22 and the fifth mounting hole 32.
Further, in combination with the above embodiments, in this embodiment, as shown in fig. 6, a partial planar structure 34 is disposed on a sidewall of the reflector inner annular structure 31, and the fifth mounting hole 32 is disposed on the partial planar structure 34. The arrangement of the structure can be matched with the plane structure of the second screw, so that the second screw can tightly press the reflector in the process of pressing the reflector, and the reflector is convenient to fix.
Further, in the present embodiment, as shown in fig. 1, the first screw 6 is sleeved with the flat washer 4 and the spring washer 5, and then used to fix the mounting plate 11 and the adjusting block 2. By providing the flat washer and the spring washer, the stability of the mirror when fixed can be further improved.
Further, in combination with the above embodiments, in this embodiment, as shown in fig. 3, the adjusting block 2 is a T-shaped structure, a long end of the T-shaped structure is in contact with the mounting plate 11, and a short end of the T-shaped structure is an outer arc structure; the surface of the reflector inner circular ring structure 31 is an inner circular arc structure, and the outer circular arc structure and the inner circular arc structure form circular surface contact. By adopting the structure in the embodiment, the second screw 7 can be screwed in, and the adjusting block 2 can adjust the posture of the adjusting block in a self-adaptive manner by adjusting the circular surface matching of the outer circular arc structure at the short end of the adjusting block and the inner circular arc structure on the inner circular ring structure of the reflector, so that the optimal state of the reflector surface type can be found more easily, the reflector, the adjusting block and the shaft base are relatively fixed through other standard components, the optimal reflector surface type is realized, and the imaging quality is further improved.
Further, the invention further provides a specific connection mode of the reflector and the rotating shaft, which comprises the following specific steps: the mirror and the mirror 3 are placed on the mounting plate 11 of the spindle base 1, and the mirror reference surface 33 is in contact with the spindle reference surface 13. 4 adjusting blocks 2 are respectively placed on the mounting plate 11 of the shaft base 1, and the long end faces of the adjusting blocks 2 are in contact with the upper surface of the mounting plate 11 of the shaft base 1. 4 second screws 7 are respectively inserted into the third mounting holes 14 on the side wall of the shaft reference surface on the shaft base, pass through the fifth mounting holes 33 on the side wall of the inner circular ring structure of the reflector and are screwed into the fourth mounting holes 22 on the side wall of the adjusting block. In the process of screwing the second screw 7 in, the outer arc structure at the short end of the adjusting block is adjusted to form circular surface fit with the inner arc structure on the inner ring structure of the reflector. Due to the screwing in of the screw thread, the adjusting block 2 adjusts the self-adaptive posture. When the end face of the second screw 7 presses the local plane structure 34 of the inner ring structure of the reflector, the second screw 7 and the adjusting block 2 press the reflector, and the interference fringe condition is observed, after the interference fringe condition is good, the first screw 6 penetrates through the first mounting hole 12 at the bottom of the mounting plate 11 on the shaft base 1, the flat washer 4 and the spring washer 5 are screwed into the second mounting hole 21 at the bottom of the adjusting block 2, and the position of the adjusting block 2 is fixed, so that the reinforcing effect is achieved. And after the fixing, judging that the surface type of the reflecting surface 8 is qualified, namely finishing the connecting structure.
By adopting the connecting structure, the adjusting block is arranged to be of a T-shaped structure, the short end of the T-shaped structure is provided with the outer arc structure, the surface of the inner circular ring structure of the reflector is of an inner circular structure, the outer arc structure and the inner circular structure form circular surface contact, when the self posture of the adjusting block is adjusted in a self-adaptive manner in the screwing process of the second screw, the state for optimizing the shape of the reflector surface is easier to find, and the reflector, the adjusting block and the shaft base are relatively fixed through other standard components, so that the optimal shape of the reflector surface is realized, and the imaging quality is further improved. The connecting structure has the advantages of simple part processing and convenient assembly and adjustment, and can improve the quality of the reflector surface type, thereby improving the imaging quality.
It is to be understood that the above examples are illustrative only for the purpose of clarity of description and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are intended to be within the scope of the invention.
Claims (7)
1. A connecting structure of a reflecting mirror and a rotating shaft is characterized by comprising:
the shaft base (1), the mounting plate (11) is arranged on the shaft base (1);
one end of the adjusting block (2) is fixedly connected with the mounting plate (11);
the reflecting mirror (3), one end face of the reflecting mirror (3) close to the mounting plate (11) is provided with a reflecting mirror inner circular ring structure (31), and the reflecting mirror (3) is fixedly connected with the mounting plate (11) through the reflecting mirror inner circular ring structure (31) and the adjusting block (2);
an axis reference surface (13) is further arranged on one end surface, close to the reflector (3), of the mounting plate (11), and the axis reference surface (13) provides a mounting reference for mounting the reflector;
the shaft reference surface (13) is in fit nested connection with the reflector inner circular ring structure (31);
be provided with third mounting hole (14) on the lateral wall of axle reference surface (13), be provided with fourth mounting hole (22) on the lateral wall of adjusting block (2), be provided with fifth mounting hole (32) on the lateral wall of ring structure (31) in the speculum, third mounting hole (14) fourth mounting hole (22) with fifth mounting hole (32) will through second screw (7) mounting panel (11) adjusting block (2) with speculum (3) spiral fixed connection.
2. The connecting structure of the reflecting mirror and the rotating shaft according to claim 1, wherein a plurality of first mounting holes (12) are formed in the bottom of the mounting plate (11), a plurality of second mounting holes (21) are formed in the bottom of the adjusting block (2), and each adjusting block (2) and the mounting plate (11) are fixedly connected with the first screw (6) in a matched spiral mode through at least two first mounting holes (12) and at least two second mounting holes (21).
3. A mirror and shaft connection according to claim 1, wherein a mirror reference surface (33) is further provided on the mirror (3), and the mirror reference surface (33) is in contact with the shaft reference surface (13) for controlling mirror mounting accuracy.
4. The connecting structure of a reflector and a rotating shaft according to claim 1, wherein a partial plane structure (34) is arranged on the side wall of the inner circular ring structure (31) of the reflector, and the fifth mounting hole (32) is arranged on the partial plane structure (34).
5. The mirror-shaft coupling structure according to claim 2, wherein the mounting plate (11) is a circular ring-shaped mounting plate; the bottom of the circular mounting plate is symmetrically provided with four adjusting blocks (2).
6. The connecting structure of the reflector and the rotating shaft according to claim 2, wherein the first screw (6) is sleeved with a flat washer (4) and a spring washer (5).
7. The connecting structure of the reflecting mirror and the rotating shaft according to claim 2, wherein the adjusting block (2) is a T-shaped structure, the long end of the T-shaped structure is in contact with the mounting plate (11), and the short end of the T-shaped structure is an outer arc structure; the surface of the reflector inner circular ring structure (31) is of an inner circular arc structure, and the outer circular arc structure and the inner circular arc structure form circular surface contact.
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| CN201910633991.XA CN110275271B (en) | 2019-07-15 | 2019-07-15 | Connecting structure of reflector and rotating shaft |
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| CN110275271B true CN110275271B (en) | 2021-09-14 |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110531481A (en) * | 2019-10-10 | 2019-12-03 | 北京遥感设备研究所 | A kind of high imaging quality reflecting mirror and axis bonded structure |
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