Lateral supporting structure of primary mirror and assembling and adjusting method
A technology of lateral support and support force, applied in installation, optics, instruments, etc., can solve the problems of increasing design, processing cycle and cost, increasing structural complexity, etc., and achieve the effect of reducing precision requirements
Active Publication Date: 2021-08-13
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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This will undoubtedly increase the complexity of the structure, thereby increasing the design, processing cycle and cost
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[0027] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the following description, the same blocks are denoted by the same reference numerals. With the same reference numerals, their names and functions are also the same. Therefore, its detailed description will not be repeated.
[0028] In order to make the object, technical solution and advantages of the present invention clearer, 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 here are only used to explain the present invention, but not to limit the present invention.
[0029] The specific working mode of the present invention is described in detail below in conjunction with figure:
[0030] Such as figure 1 As shown, when the distribution of the lateral support points of the large-diameter primary mirror...
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The invention provides a lateral supporting structure of a primary mirror. The lateral supporting structure comprises a mirror chamber, a rotating shaft, an input lever, an output lever and a lateral supporting connecting rod. The structure can meet the requirement that the magnitude and the direction of lateral supporting force required by each lateral supporting point are different under the hydraulic Whiffletree lateral supporting mode of the primary mirror. The invention also provides a lateral support adjustment method of a primary mirror, which comprises the following steps of: S1, adjusting the length of the lateral support connecting rod through the differential nut so as to finely adjust the direction of the lateral support force; and S2, adjusting the vertical distance and the space included angle between the output lever and the input lever, so that it is guaranteed that the output force of the lateral supporting hydraulic cylinder and the output force of the output lever perpendicularly act on the input lever and the output lever. By selecting the length ratio of the input lever and the output lever, output of lateral supporting force of different sizes can be achieved, and meanwhile due to the adjustability of all the structures, the precision requirements for machining and assembling of all the structures are lowered.
Description
technical field [0001] The invention relates to the field of photoelectric instrument primary mirror support, in particular to a primary mirror lateral support structure and an assembly method. Background technique [0002] Since the primary mirror in ground-based telescopes needs to point to different pitch heights, the direction of gravity on the primary mirror is constantly changing. Therefore, the support system of a large-aperture primary mirror usually includes two parts: axial support and lateral support, which bear the gravitational force of the primary mirror respectively. Axial and radial components. In order to ensure the surface shape accuracy of the large-aperture primary mirror, the number of axial and lateral support points will be increased, and the number of lateral support points will be expanded from the traditional 3 points to 6 points, 8 points, 12 points, 16 points, 24 points, etc. . According to the direction and distribution of the lateral support f...
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IPC IPC(8): G02B7/182
CPCG02B7/182
Inventor 吴小霞王建立陈涛李洪文邵亮
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI