Detection turnover device for large-aperture reflecting mirror

Abstract

The invention relates to the technical field of reflector detection, in particular to a large-aperture reflector detection turnover device which comprises a connecting plate, a corner column, a vertical column and a base, a reflector is mounted on the connecting plate, the flat end face of the corner column is rotatably connected with the connecting plate through an axial rotating shaft, and the vertical column is mounted on the corner column. The 45-degree inclined plane of the corner column is rotatably connected with the 45-degree inclined plane of the vertical column through the 45-degree rotating shaft, the flat end face of the vertical column is rotatably connected with the base through the axial rotating shaft, and the conversion of the reflector between the horizontal posture and the vertical posture can be achieved through the 45-degree rotating shaft. The azimuth angle, the roll angle and the pitch angle of the reflector can be accurately adjusted through the two axial rotating shafts and the 45-degree inclined plane. The device has the advantages of being simple in structure, small in occupied space, high in rigidity, capable of achieving automatic overturning through motor driving and the like, the process of manually erecting the reflecting mirror from the horizontal position is avoided, and the safety risk of overturning detection of the large-diameter reflecting mirror is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of mirror detection, and particularly relates to a detection and flipping device for large-aperture mirrors. Background Art

[0002] Large-aperture mirrors have crucial applications in many fields. For example, in the field of astronomy, large astronomical telescopes rely on large-aperture mirrors to collect more light, thereby observing more distant galaxies and celestial bodies, providing key data support for astronomical research; in the field of laser technology, large-aperture mirrors are one of the core components in high-power laser systems, used to precisely control the propagation direction and focusing of lasers, and are widely used in material processing, scientific research experiments, etc. In addition, in high-tech fields such as aerospace, large-aperture mirrors also play an indispensable role. For example, guidance systems, space exploration equipment, etc. all rely on high-performance large-aperture mirrors.

[0003] There are extremely high requirements for the surface shape accuracy and assembly and positioning accuracy of large-aperture mirrors. For the surface shape accuracy, the RMS value is usually required to be ≤λ / 20, where λ = 632.8nm; for the assembly and positioning accuracy, the angular deviation is usually required to be ≤3 arcsec.

[0004] The traditional detection process for large-aperture mirrors requires processes such as mirror surface detection - disassembly and flipping - secondary clamping - re-inspection, etc. The following problems exist during the detection process: First, since the weight of the large-aperture mirror body is usually ≥200kg, multiple people are required to cooperate during the physical flipping process, making it difficult to flip the mirror, and there is a risk of collision damage during the flipping process; second, after the mirror is flipped, a manual fixing method is generally used to keep the mirror in an upright state. This process is complex to operate, has a high safety risk, and this method results in a low assembly and positioning accuracy. The repeat positioning error is usually in the millimeter range and it is difficult to meet the micron-level detection requirements.

[0005] To solve the above problems, some mirror flipping solutions have been proposed. Existing solutions usually use optical adjustment frames to assist in mirror flipping, but generally have problems such as complex structures, large volumes, inability to achieve automatic flipping, and still requiring manual control.

[0006] For the Chinese invention patent with the publication number CN104166213A, publication date November 26, 2024, and title "Large-aperture optical adjustment mount", it adopts a frame structure. During the detection process of large-aperture mirrors with a diameter of more than 2m, after manually erecting the mirror from the horizontal position or lifting one side of the mirror with a crane, the mirror is manually hung on the mirror frame after being erected horizontally, without an automatic flipping function. The risk of erecting the large-aperture mirror during this process is relatively high, and it only has a pitching adjustment function, without the ability to adjust in the azimuth and roll directions, and the overall structural stiffness is weak.

[0007] For the Chinese invention patent with the publication number CN111948782A, publication date November 17, 2020, and title "A flipping detection device for a large-aperture mirror assembly", although it has a flipping function, it does not have the ability to adjust the mirror, resulting in poor assembly and positioning accuracy. Moreover, it adopts a frame structure, with a complex structure and a large volume, which is not conducive to mirror detection.

[0008] Therefore, there is an urgent need to propose a detection and flipping device for large-aperture mirrors that has a simple structure, small volume, high stiffness, and can achieve the flipping and high-precision adjustment of the mirror. Summary of the Invention

[0009] In view of this, the present invention aims to provide a detection and flipping device for large-aperture mirrors, which realizes the 90-degree flipping and attitude adjustment of the mirror through the combination of 3 rotating shafts, and solves the problems of complex structure and inability to achieve automatic flipping of traditional mirror detection and flipping devices.

[0010] To achieve the above object, the technical solution of the present invention is realized as follows: The present invention provides a detection and flipping device for large-aperture mirrors, including: A connecting plate for installing the mirror, as well as corner columns, vertical columns, and a base; Among them, the first end face of the corner column is a plane, and the first end face of the corner column is rotationally connected to the connecting plate through a first axial rotating shaft; the second end face of the corner column is a 45-degree inclined plane; The first end face of the vertical column is a 45-degree inclined plane and is rotationally connected to the second end face of the corner column through a 45-degree rotating shaft; the second end face of the vertical column is a plane, and the second end face of the vertical column is rotationally connected to the base through a second axial rotating shaft.

[0011] Preferably, the corner column is an L-shaped right-angle corner column.

[0012] Preferably, both the corner column and the vertical column are hollow cavity column structures.

[0013] Preferably, the first axial rotating shaft, the second axial rotating shaft, and the 45-degree rotating shaft are all turntable bearings.

[0014] Preferably, the first axial rotating shaft, the second axial rotating shaft and the 45-degree rotating shaft are respectively driven by worm gears and worm shafts.

[0015] Preferably, the worm gears and worm shafts for driving the first axial rotating shaft, the worm gears and worm shafts for driving the second axial rotating shaft, and the worm gears and worm shafts for driving the 45-degree rotating shaft all have self-locking functions.

[0016] Preferably, the worm gears and worm shafts are driven by a motor, and the first axial rotating shaft, the second axial rotating shaft and the 45-degree rotating shaft are respectively driven to rotate by driving the worm gears.

[0017] Preferably, the driving of the 45-degree rotating shaft drives the mirror to perform a 90-degree flip.

[0018] Compared with the prior art, the present invention can achieve the following beneficial effects: The present invention adopts a combined design of three rotating shafts. By rotating the rotating shafts, the flipping of the mirror and the high-precision adjustment of multiple degrees of freedom can be realized. During the mirror loading process, the mirror can be placed on the detection and flipping device by means of horizontal lifting, and then the 45-degree rotating shaft is rotated to drive the mirror to achieve a 90-degree flip, that is, from a horizontal state to a vertical state, avoiding the process of manually erecting the mirror from horizontal, and reducing the safety risk of detecting and flipping large-aperture mirrors. In addition, the structure of the present invention is simple, occupies a small space, has high rigidity, and can be automatically flipped by motor drive, improving the flipping efficiency and safety of the mirror.

[0019] The present invention can also realize the azimuth and roll adjustment of the mirror through two axial rotating shafts, and cooperate with the rotation of the 45-degree rotating shaft to realize the pitch adjustment of the mirror, solving the problems that the existing flipping mechanism cannot realize the multi-degree-of-freedom adjustment of the mirror. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings: Figure 1 is a horizontal attitude structure diagram of a detection and flipping device for a large-aperture mirror according to an embodiment of the present invention; Figure 2 is a vertical attitude structure diagram of a detection and flipping device for a large-aperture mirror according to an embodiment of the present invention.

[0021] Among them, the reference numerals include: Mirror 1, connecting plate 2, first axial rotating shaft 3, corner post 4, 45-degree rotating shaft 5, vertical post 6, second axial rotating shaft 7, base 8. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and do not constitute a limitation to the present invention. Similar elements in different embodiments are labeled with related similar element numbers. In the following embodiments, many detailed descriptions are provided to enable a better understanding of the present invention. However, those skilled in the art can easily recognize that some of the features can be omitted in different situations, or can be replaced by other elements, materials, or methods. In some cases, some operations related to the present invention are not shown or described in the specification, in order to avoid the core part of the present invention being overwhelmed by excessive descriptions. For those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations based on the descriptions in the specification and the general technical knowledge in the art.

[0023] It should be noted that, without conflict, the embodiments and features in the embodiments of the present invention can be combined with each other to form various embodiments. At the same time, the steps or actions in the method description can also be reordered or adjusted in an obvious manner by those skilled in the art. Therefore, the various sequences in the specification and drawings are only for clearly describing a certain embodiment and do not mean that they are the necessary sequences, unless it is stated that a certain sequence must be followed.

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention 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 thus should not be construed as a limitation to the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0025] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" 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 a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] The present invention will be described in detail below with reference to the drawings and in conjunction with embodiments.

[0027] Please refer to Figure 1 and Figure 2 , in an embodiment of the present invention, a detection and flipping device for a large-aperture mirror is provided, which is used to achieve a 90-degree flip of the mirror 1 during the detection process of the large-aperture mirror, and perform switching between a horizontal posture such as Figure 1 and a vertical posture such as Figure 2 . The detection and flipping device specifically includes: a mirror 1, a connecting plate 2, a first axial rotating shaft 3, a corner column 4, a 45-degree rotating shaft 5, a vertical column 6, a second axial rotating shaft 7, and a base 8. Among them, the mirror 1 is a large-aperture mirror to be detected, which has a large aperture and a heavy weight, usually with a weight ≥ 200 kg.

[0028] The connecting plate 2 is the installation base of the mirror 1. During the detection process of the mirror 1, the mirror 1 is connected to the front surface of the connecting plate 2. The connecting plate 2 can provide a stable and reliable connection to ensure that the mirror 1 will not loosen or displace during subsequent flipping and adjustment processes.

[0029] The corner column 4 is an L-shaped right-angle corner column, which plays a role in supporting and flipping the mirror 1. The first end face of the corner column 4 is a plane, and this plane is rotationally connected to the front surface of the connecting plate 2 through the first axial rotating shaft 3. The corner column 4 is a hollow cavity column structure, which reduces the overall weight as much as possible while ensuring its sufficient stiffness, which is beneficial to improving the portability and flexibility of the entire device. At a position close to the first end face in the cavity of the corner column 4, a motor and a worm and gear transmission mechanism are arranged. The motor drives the worm and gear to rotate, and the worm and gear drive the first axial rotating shaft 3 to rotate, so as to realize the connecting plate 2 driving the mirror 1 to rotate relative to the first end face of the corner column 4. Among them, the worm and gear can also be designed with a self-locking function to improve the rotational stability. The second end face of the corner column 4 is a 45-degree inclined plane.

[0030] The vertical column 6 is also a hollow cavity column structure. The upper end face of the vertical column 6 is a 45-degree inclined plane, which is adapted to the 45-degree inclined plane of the corner column 4. The 45-degree inclined plane of the vertical column 6 and the 45-degree inclined plane of the corner column 4 are rotationally connected through a 45-degree rotating shaft 5. At a position near the 45-degree inclined plane in the cavity of the vertical column 6, a motor and a worm and worm gear transmission mechanism are arranged. The motor drives the worm and worm gear to rotate, and the worm and worm gear drive the 45-degree rotating shaft 5 to rotate, so that the corner column 4 rotates relative to the vertical column 6. Among them, the worm and worm gear can also be designed with a self-locking function to improve the rotational stability. The lower end face of the vertical column 6 is a plane.

[0031] The base 8 is the basic support part of the whole device. It adopts a three-point support structure to evenly disperse the weight and force of the device, ensuring that the whole adjusting frame has good stability and anti-overturning ability, and providing a stable platform for the detection and adjustment of the mirror 1. The base 8 and the lower end face of the vertical column 6 are rotationally connected through a second axial rotating shaft 7. At a position near the lower end face of the vertical column 6 in the base 8, a motor and a worm and worm gear transmission mechanism are arranged. The motor drives the worm and worm gear to rotate, and the worm and worm gear drive the second axial rotating shaft 7 to rotate, so that the corner column 4 rotates relative to the vertical column 6. Among them, the worm and worm gear can also be designed with a self-locking function to improve the rotational stability.

[0032] To improve the rotational stability, the first axial rotating shaft 3, the 45-degree rotating shaft 5 and the second axial rotating shaft 7 all adopt large-size high-rigidity turntable bearings and are equipped with worm and worm gear drive structures. The large-size high-rigidity turntable bearings can bear large loads, ensuring the stability and accuracy of the rotating shaft during rotation. The worm and worm gear drive structure has the advantages of good self-locking, large transmission ratio and strong bearing capacity, and can provide high-precision rotation control and large driving torque, ensuring the smooth flipping and adjustment of the mirror 1 and meeting the accuracy requirements for the detection and adjustment of large-aperture mirrors.

[0033] Based on the above structure, its application in the mirror detection process is as follows: First, rotate through the 45-degree rotating shaft 5 to make the connecting plate 2 in a horizontal state, that is, the state as shown in Figure 1 . Horizontally lift the mirror 1 and position it on the connecting plate 2, and connect and fix the mirror 1 and the connecting plate 2.

[0034] According to the detection requirements, operate the corresponding rotating shaft for adjustment. When it is necessary to flip the mirror 1, drive the worm and worm gear to rotate through the motor, and drive the 45-degree rotating shaft 5 to rotate, so that the first end face of the corner column 4 is in a vertical posture, that is, the 45-degree rotating shaft 5 rotates 90 degrees to drive the mirror 1 to change from the horizontal state as shown in Figure 1 to the vertical posture as shown in Figure 2 .

[0035] When adjusting the attitude of the mirror 1, the roll angle of the mirror 1 is adjusted by rotating the first axial rotating shaft 3, the azimuth angle of the mirror 1 is adjusted by rotating the second axial rotating shaft 7, and combined with the fine adjustment of the 45-degree rotating shaft 5, the precise adjustment of the mirror 1 in the pitch direction is realized. Finally, the mirror 1 reaches the required high-precision attitude to meet the requirements of optical detection.

[0036] In order to realize the automatic flipping and pose adjustment of the mirror 1, high-precision encoders and controllers can be added to the driving parts of the first axial rotating shaft 3, the 45-degree rotating shaft 5 and the second axial rotating shaft 7 to monitor the rotation angles and positions of the first axial rotating shaft 3, the 45-degree rotating shaft 5 and the second axial rotating shaft 7 in real time, and perform precise closed-loop control through the controller. By precisely controlling the movement of each rotating shaft through the controller, the automatic flipping and high-precision attitude adjustment of the mirror 1 are realized, greatly improving the detection efficiency and automation level, reducing manual intervention, avoiding the process of manually erecting the mirror 1 from the horizontal position in the traditional mirror detection process, reducing the risk of errors, and providing strong support for the optical detection work of the large-aperture mirror 1.

[0037] In short, the above description is only the preferred embodiment of this specification and is not used to limit the protection scope of this specification. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this specification shall be included in the protection scope of this specification.

[0038] The system, device, module or unit illustrated in the above one or more embodiments can be specifically implemented by a computer chip or entity, or by a product with certain functions. A typical implementation device is a computer. Specifically, the computer can be, for example, a personal computer, a laptop computer, a cellular phone, a camera phone, a smart phone, a personal digital assistant, a media player, a navigation device, an email device, a game console, a tablet computer, a wearable device, or any combination of these devices.

[0039] It should also be noted that the term "including", "comprising" or any other variant thereof is intended to cover a non-exclusive inclusion, so that a process, method, commodity or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, commodity or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of another identical element in the process, method, commodity or device including the said element.

[0040] Each embodiment in this specification is described in a progressive manner. For the identical or similar parts among the embodiments, reference can be made to each other, and the differences between each embodiment and other embodiments are emphasized. In particular, for system embodiments, since they are basically similar to method embodiments, the description is relatively simple, and reference can be made to the relevant parts of the method embodiments for the relevant content.

[0041] The specific embodiments of this specification are described above. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims can be performed in a different order from that in the embodiments and still achieve the desired results. Additionally, the processes depicted in the drawings do not necessarily require the specific order or consecutive order shown to achieve the desired results. In certain embodiments, multitasking and parallel processing are also possible or may be advantageous.

Claims

1. A detection and flipping device for a large-aperture reflector, characterized in that Comprising: A connecting plate for installing a mirror, as well as a corner post, a vertical post, and a base; Wherein, the first end face of the corner post is a plane, and the first end face of the corner post is rotationally connected to the connecting plate through a first axial rotating shaft; the second end face of the corner post is a 45-degree inclined plane; The first end face of the vertical post is a 45-degree inclined plane and is rotationally connected to the second end face of the corner post through a 45-degree rotating shaft; the second end face of the vertical post is a plane, and the second end face of the vertical post is rotationally connected to the base through a second axial rotating shaft.

2. The detection and flipping device for the large-aperture mirror according to claim 1, characterized in that, The corner post is an L-shaped right-angle corner post.

3. The detection and flipping device for a large-aperture reflector according to claim 1, characterized in that, Both the corner post and the vertical post are hollow cavity column structures.

4. The detection and flipping device for the large-aperture reflector according to claim 1, wherein, The first axial rotating shaft, the second axial rotating shaft, and the 45-degree rotating shaft are all turntable bearings.

5. The detection and flipping device for a large-aperture reflector according to claim 1, characterized in that, The first axial rotating shaft, the second axial rotating shaft, and the 45-degree rotating shaft are respectively driven by worm gears.

6. The detecting and flipping device for a large-aperture reflector according to claim 5, wherein The worm gears for driving the first axial rotating shaft, the worm gears for driving the second axial rotating shaft, and the worm gears for driving the 45-degree rotating shaft all have a self-locking function.

7. The detection and flipping device for a large-aperture reflector according to claim 5, characterized in that, The worm gears are driven by a motor, and the first axial rotating shaft, the second axial rotating shaft, and the 45-degree rotating shaft are respectively rotated by driving the worm wheels.

8. The detection and flipping device for a large-aperture reflector according to claim 1, characterized in that, By driving the 45-degree rotating shaft to rotate, the mirror is driven to perform a 90-degree flip.

Images