An installation and adjustment mechanism for an edge sensor

Abstract

The present invention discloses an installation and adjustment mechanism for an edge sensor, which belongs to the technical field of installation of edge sensors for spliced ​​mirrors. The present invention is provided with a shaft and a measuring arm installed below a first sub-mirror and a second sub-mirror; the top end of the shaft is fixedly connected to the first sub-mirror through a first indium steel block, one end of the measuring arm is sleeved on the shaft, and the other end extends toward the second sub-mirror in the form of a cantilever, and a sensor is fixedly connected to the lower part of the second sub-mirror through a second indium steel block; wherein, the shaft is provided with adjustment blocks on both sides of the measuring arm, and the adjustment blocks contact the measuring arm through a section inclined to the horizontal plane, so as to twist the two adjustment blocks so that the measuring arm forms an inclined angle with the horizontal plane. The present invention can ensure the installation accuracy of the edge sensor, can greatly reduce the processing requirements for the sub-mirrors and the edge sensor installation surfaces, and has the beneficial effects of compact structure, simple and efficient operation.

Description

Technical Field

[0001] The present invention relates to the technical field of installing a spliced ​​mirror edge sensor, and in particular to an installation and adjustment mechanism for an edge sensor. Background Art

[0002] With the continuous advancement of astronomical exploration, telescope apertures are becoming increasingly larger. Spliced ​​mirror technology has made it possible to build large-aperture optical telescopes. Furthermore, with the development of active optics and adaptive optics, spliced ​​mirror technology has become an important approach for designing primary mirrors for large-aperture telescopes. The basic concept of active optics is to monitor the position and shape of the telescope's spliced ​​mirror in real time and perform real-time corrections to ensure that the telescope mirror maintains an ideal common phase state. This information is primarily collected by edge sensors. Edge sensor technology is a key technology in spliced ​​mirror active optics and is crucial for maintaining this common phase state.

[0003] Currently, the edge sensors of large-scale spliced ​​telescopes are directly fixed to the edges of adjacent sub-mirrors through bonding, and the sensor's positioning accuracy must be strictly guaranteed during initial installation. However, this state can be disrupted when sub-mirrors are replaced or coated, and the sensors are sometimes forcibly removed, which can easily damage the mounting surface of the spliced ​​sub-mirrors and affect the accuracy of the edge sensors when they are reinstalled. In addition, the edge sensors currently in use are all electrical sensors, and most of them are capacitive sensors. Due to the time and temperature drift of electrical sensors, the initial position of the sensors needs to be regularly calibrated and calibrated, which requires the sensor's mounting mechanism to have adjustable position.

[0004] However, existing edge sensor mounting systems, whether horizontal or vertical, rely on spacers for fine-tuning and calibration. While this method can adjust the spacing between the sensor's two plates, it cannot adjust the inclination angle between them. Furthermore, in practical applications, the accuracy of the sensor system is limited by processing and assembly requirements. Furthermore, this type of edge sensor mounting structure is complex and requires significant space, leading to layout interference issues when assembling small and medium-sized sub-mirrors.

[0005] Therefore, based on the above problems, how to provide an edge sensor installation and adjustment mechanism with compact structure, simple and convenient operation, and high precision has become an important technical problem that needs to be solved urgently by technical personnel in this field. Summary of the Invention

[0006] The purpose of the present invention is to overcome the defects of the prior art and provide an edge sensor installation and adjustment mechanism that can ensure the installation accuracy of the edge sensor. Compared with the existing installation and adjustment device, the adjustment mechanism not only has the ability to adjust the distance and inclination angle between the two electrode plates of the sensor, but also has a compact structure, simple and efficient operation, and can greatly reduce the processing requirements for the sub-mirror and the edge sensor mounting surface.

[0007] In order to achieve the above object, the present invention provides the following technical solutions:

[0008] The present invention discloses an edge sensor installation and adjustment mechanism, comprising:

[0009] A shaft and a measuring arm are mounted below the first sub-mirror and the second sub-mirror;

[0010] The top end of the shaft is fixedly connected to the first sub-mirror via a first indium steel block; one end of the measuring arm is sleeved on the shaft, and the other end extends toward the second sub-mirror in the form of a cantilever; the lower part of the second sub-mirror is fixedly connected to a sensor via a second indium steel block;

[0011] Wherein, the shaft is located on both sides of the measuring arm and is equipped with adjustment blocks, and the adjustment blocks are in contact with the measuring arm through a section inclined to the horizontal plane, so that the two adjustment blocks can be twisted to form an inclined angle between the measuring arm and the horizontal plane.

[0012] Furthermore, the adjustment block is constructed as a cylindrical structure, one end of which is formed with the section extending obliquely downward, wherein the sections of the two adjustment blocks relatively clamp the measuring arm and rotate to make the measuring arm swing within the angle range of ±α.

[0013] Furthermore, the top end of the shaft is threadedly connected with a first fastener for driving the measuring arm and the adjusting block to move along the shaft, thereby adjusting the distance between the measuring arm and the second sub-mirror.

[0014] Furthermore, an elastic component is sleeved on the bottom end of the shaft, and the elastic component enables the measuring arm and the adjusting block, and the adjusting block and the first fastener to contact each other.

[0015] Furthermore, the elastic component includes a spring sleeved on the shaft and washers arranged at both ends of the spring. The spring is a compression spring, and the ends of the compression spring are in contact with the washers.

[0016] Furthermore, the shaft is located at the lower part of the elastic component and is threadedly connected to a second fastener for supporting the elastic component.

[0017] Furthermore, the second fastener is a butterfly nut.

[0018] Furthermore, the first fastener is a fine-thread nut.

[0019] In the above technical solution, the present invention provides an edge sensor installation and adjustment mechanism, which has the following beneficial effects:

[0020] The edge sensor installation and adjustment mechanism designed in the present invention has a measuring arm with one end sleeved on a shaft and the other end extending toward the second sub-mirror in the form of a cantilever. The shaft is located on both sides of the measuring arm and is provided with adjustment blocks. The adjustment blocks contact the measuring arm through a section inclined to the horizontal plane. During adjustment, the two adjustment blocks are twisted to form an inclined angle between the measuring arm and the horizontal plane, making the measuring arm parallel to the sensor, thereby achieving calibration of the sensor's inclination angle.

[0021] Secondly, a fine-thread nut is threaded on the top of the shaft, and the distance between the sensor and the measuring arm is calibrated by controlling the distance between the fine-thread nut and the first indium steel block;

[0022] In addition, an elastic component and a butterfly nut are arranged in sequence at the bottom end of the shaft. The elastic component includes a spring and a washer. The butterfly nut is easy to rotate manually and is easy to adjust. At the same time, after adjusting the fine-thread nut to adjust the distance between the sensor and the measuring arm, this state can be maintained by compressing the spring and the butterfly nut.

[0023] Compared with the existing structure, the installation and adjustment mechanism of the edge sensor uses the adjustment block cross-section adjustment method instead of the pad fixed inclination method in the prior art, which can avoid the problem of non-parallelism between the sensor and the measuring arm caused by processing and manufacturing errors, reduce the detection error of the system, and at the same time, to a certain extent, reduce the processing and manufacturing requirements for the part surface; in addition, the present invention uses fine-thread self-locking nuts to replace the pads in the existing technology, while achieving the same function, greatly reducing the complexity of the structure, making the structure more compact, and easier and more convenient to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0025] Figure 1 This is a schematic diagram of the overall adjustment state principle of the installation adjustment mechanism of an edge sensor disclosed in the present invention;

[0026] Figure 2 It is a structural schematic diagram of a mounting and adjusting mechanism of an edge sensor disclosed in the present invention;

[0027] Figure 3The present invention discloses a schematic diagram of an adjustment state of a measuring arm of an installation adjustment mechanism of an edge sensor.

[0028] Description of reference numerals:

[0029] 1. Shaft; 2. First indium steel block; 3. Sensor; 4. Second indium steel block; 5. Fine-thread nut; 6. Adjustment block; 7. Measuring arm; 8. Washer; 9. Spring; 10. Butterfly nut;

[0030] 100, the first sub-mirror;

[0031] 200. The second sub-mirror. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0033] See also Figure 1 、 2 As shown;

[0034] An edge sensor mounting and adjustment mechanism is invented, comprising: a shaft 1 and a measuring arm 7 mounted below a first sub-mirror 100 and a second sub-mirror 200;

[0035] The top end of the shaft 1 is fixedly connected to the first sub-mirror 100 through the first indium steel block 2. Specifically, the first indium steel block 2 is fixedly connected to the first sub-mirror 100 through a bonding process. The shaft 1 has a fine external thread, which is threadedly connected to a threaded hole provided on the lower surface of the first indium steel block 2 through the external thread.

[0036] One end of the measuring arm 7 is sleeved on the shaft 1, and the other end extends toward the second sub-mirror 200 in the form of a cantilever. The measuring arm 7 cooperates with the shaft 1, so that the installation adjustment mechanism forms an adjustment end with the shaft 1 as the center and a fixed end with the end of the measuring arm 7. At the fixed end, the lower part of the second sub-mirror 200 is fixedly connected to the sensor 3 through the second indium steel block 4. The sensor 3 and the second indium steel block 4 can be fixedly connected in the form of screw connection in the prior art;

[0037] Among them, the shaft 1 is provided with adjustment blocks 6 on both sides of the measuring arm 7. The adjustment blocks 6 contact the measuring arm 7 through a section inclined to the horizontal plane, so that the two adjustment blocks 6 can be twisted to form an inclined angle between the measuring arm 7 and the horizontal plane.

[0038] Preferably, the adjustment block 6 is constructed as a cylindrical structure, one end of which is formed with a section extending obliquely downward, wherein the sections of the two adjustment blocks 6 relatively clamp the measuring arm 7 and rotate to make the measuring arm 7 swing within the angle range of ±α.

[0039] Among them, the cutting angle α between the cut surface of the adjustment block 6 and the horizontal plane should be slightly larger than the angle θ between the sensor 3 and the horizontal plane to ensure that the measuring arm 7 can be parallel to the sensor 3 during the adjustment process. The height of the second indium steel block 4 in the fixed end depends on the height of the first indium steel block 2, the first fastener, and the adjustment block 6 at the left adjustment end when they are tightly connected.

[0040] If the two beveled cylindrical adjustment blocks 6 have both cutting angles α, as shown in Figure 3 When placed as shown, when the two adjustment blocks 6 rotate relative to each other around the axis 1, the angle between the measuring arm 7 and the horizontal plane varies within the range of ±α. When the angle is greater than θ, the measuring arm 7 can be made parallel to the sensor 3. However, this change will also cause a change in the height of the measuring arm 7. In order to make the spacing between the sensor 3 and the measuring arm 7 controllable, preferably, the top end of the axis 1 is threadedly connected with a first fastener for driving the measuring arm 7 and the adjustment block 6 to move along the axis 1. The first fastener is a fine-thread nut 5. By rotating the fine-thread nut 5, the fine-thread nut 5 moves downward, thereby adjusting the spacing between the measuring arm 7 and the second sub-mirror 200. In other words, as Figure 1 As shown, a fine-thread nut 5 is installed between the first indium steel block 2 and the adjustment block 6, and the fine-thread nut 5 is adjusted with the help of a high-precision ruler to adjust the distance between the sensor 3 and the measuring arm 7;

[0041] Preferably, an elastic component is also mounted on the bottom end of the shaft 1, which enables contact between the measuring arm 7 and the adjustment block 6, and between the adjustment block 6 and the fine-thread nut 5. The elastic component includes a spring 9 mounted on the shaft 1 and washers 8 disposed at both ends of the spring 9. The spring 9 is a compression spring, and the ends of the compression spring are in contact with the washers 8.

[0042] Preferably, the shaft 1 is located at the lower part of the elastic component and is threadedly connected to a second fastener for supporting the elastic component. The second fastener is a butterfly nut 10, which is convenient for manual rotation of the butterfly nut 10 and easy adjustment. At the same time, the fine-thread nut 5 is adjusted to adjust the distance between the sensor 3 and the measuring arm 7, and this state is maintained by compressing the spring 9 and the butterfly nut 10.

[0043] In the above technical solution, the present invention provides an edge sensor installation and adjustment mechanism, the working principle of which is as follows:

[0044] See also Figure 1 As shown, the first indium steel block 2, fine-thread nut 5, adjustment block 6, measuring arm 7, washer 8, spring 9, and butterfly nut 10 are sequentially installed on the shaft 1;

[0045] First, the measuring arm 7 is made parallel to the sensor 3 by rotating the adjustment block 6 to achieve the inclination calibration of the sensor 3. It is worth noting that in this process, the distance and inclination between the sensor 3 and the measuring arm 7 will change. Then, the distance between the sensor 3 and the measuring arm 7 is calibrated by controlling the distance between the fine-thread nut 5 and the first indium steel block 2.

[0046] Beneficial effects: The edge sensor installation and adjustment mechanism designed by the present invention has the following features: first, one end of the measuring arm 7 is sleeved on the shaft 1, and the other end extends toward the second sub-mirror 200 in the form of a cantilever, and the shaft 1 is provided with adjustment blocks 6 on both sides of the measuring arm 7. The adjustment blocks 6 contact the measuring arm 7 through a section inclined to the horizontal plane. During adjustment, the two adjustment blocks 6 are twisted to form an inclined angle between the measuring arm 7 and the horizontal plane, so that the measuring arm 7 is parallel to the sensor 3, thereby achieving calibration of the inclination angle of the sensor 3;

[0047] Secondly, the top end of the shaft 1 is threadedly connected to a first fastener, which is a fine-pitch nut 5. The distance between the sensor 3 and the measuring arm 7 is calibrated by controlling the distance between the fine-pitch nut 5 and the first indium steel block 2.

[0048] In addition, the bottom end of the shaft 1 is sequentially provided with a washer 8, a spring 9, a washer 8 and a butterfly nut 10. The butterfly nut 10 is convenient for manual rotation and adjustment. At the same time, after adjusting the fine-thread nut 5 to adjust the distance between the sensor and the measuring arm, this state can be maintained by compressing the spring 9 and the butterfly nut 10.

[0049] Compared with the existing structure, the installation and adjustment mechanism of the edge sensor uses the adjustment block cross-section adjustment method instead of the pad fixed inclination method in the prior art, which can avoid the problem of non-parallelism between the sensor and the measuring arm caused by processing and manufacturing errors, reduce the detection error of the system, and at the same time, to a certain extent, reduce the processing and manufacturing requirements for the part surface; in addition, the present invention uses the first fastener self-locking to replace the pad in the existing prior art, while achieving the same function, greatly reducing the complexity of the structure, making the structure more compact, and easier and more convenient to operate.

[0050] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims.

Claims

1. An edge sensor installation and adjustment mechanism, characterized in that: include: A shaft (1) and a measuring arm (7) installed below the first sub-mirror (100) and the second sub-mirror (200); The top end of the shaft (1) is fixedly connected to the first sub-mirror (100) via a first indium steel block (2); one end of the measuring arm (7) is sleeved on the shaft (1), and the other end extends toward the second sub-mirror (200) in the form of a cantilever; the lower part of the second sub-mirror (200) is fixedly connected to a sensor (3) via a second indium steel block (4); The shaft (1) is located on both sides of the measuring arm (7) and is provided with adjustment blocks (6). The adjustment blocks (6) contact the measuring arm (7) through a section inclined to a horizontal plane, so that the two adjustment blocks (6) are twisted to form an inclined angle between the measuring arm (7) and the horizontal plane.

2. The edge sensor installation and adjustment mechanism according to claim 1, characterized in that: The adjusting block (6) is constructed as a cylindrical structure, with one end of the adjusting block being formed with the section extending obliquely downward, wherein the sections of the two adjusting blocks (6) relatively clamp the measuring arm (7) and rotate to enable the measuring arm (7) to swing within an angle range of ±α.

3. The edge sensor installation and adjustment mechanism according to claim 1, It is characterized by: The top end of the shaft (1) is threadedly connected to a first fastener for driving the measuring arm (7) and the adjusting block (6) to move along the shaft (1), thereby adjusting the distance between the measuring arm (7) and the second sub-mirror (200).

4. The edge sensor installation and adjustment mechanism according to claim 3, characterized in that ； The bottom end of the shaft (1) is sleeved with an elastic component, and the elastic component enables the measuring arm (7) and the adjustment block (6), and the adjustment block (6) and the first fastener to contact each other.

5. The edge sensor installation and adjustment mechanism according to claim 4, characterized in that ； The elastic component comprises a spring (9) sleeved on the shaft (1) and washers (8) arranged at both ends of the spring (9); the spring (9) is a compression spring, and the ends of the compression spring are in contact with the washers (8).

6. The edge sensor installation and adjustment mechanism according to claim 4, characterized in that ； The shaft (1) is located at the lower part of the elastic component and is threadedly connected to a second fastener for supporting the elastic component.

7. The edge sensor installation and adjustment mechanism according to claim 6, characterized in that ； The second fastener is a butterfly nut (10).

8. The edge sensor installation and adjustment mechanism according to claim 3, characterized in that ； The first fastener is a fine-thread nut (5).

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