High-precision and high-stability mirror adjustment device based on flexible hinges

A flexible hinge and adjustment device technology, applied in installation, optics, instruments, etc., can solve the problems of inability to perform on-orbit correction, poor mechanical environment resistance, large volume and weight of the mechanism, and achieve simple adjustment control process and structural design. , The effect of meeting the requirements of high reliability and small driving torque

Active Publication Date: 2018-06-15
BEIJING RES INST OF SPATIAL MECHANICAL & ELECTRICAL TECH
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Problems solved by technology

The advantage of this solution is that it is simple to implement, but the disadvantage is that there will be residual position deviation during the component fixing process. In addition, this method is a one-time adjustment, which cannot be corrected on-orbit;
[0003] Some domestic research institutes use the Hexapod platform mechanism as the mirror adjustment mechanism. This mechanism has flexib

Method used

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  • High-precision and high-stability mirror adjustment device based on flexible hinges
  • High-precision and high-stability mirror adjustment device based on flexible hinges
  • High-precision and high-stability mirror adjustment device based on flexible hinges

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[0023] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0024] A high-precision, high-stable mirror adjustment device based on flexible hinges, including at least three flexible support mechanisms, preferably three flexible support mechanisms, and the three are distributed at an angle of 120°, such as image 3 shown.

[0025] The flexible support mechanism has the same structure, including motor 1, flexible hinge 2, differential screw reducer 3 and displacement sensor 4, such as figure 1 , figure 2 As shown, both ends of the shaft are coaxially connected with a motor 1, and the connection between the motor 1 and the shell of the differential thread reducer 3 is fixedly connected with the flexible hinge 2, and the shells of the differential thread reducer 3 can slide relative to each other.

[0026] The shape of the flexible hinge 2 is an octagonal structure, and the four surfaces in the orthogonal direction are non-def...

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Abstract

The invention discloses a high-precision and high-stability mirror adjustment device based on flexible hinges, comprising at least three flexible support mechanisms which are of the same structure. Each flexible support mechanism comprises motors, a flexible hinge, differential threaded decelerators and a displacement sensor. The motors are placed at the two ends of a shaft respectively, and are fixedly connected with the flexible hinge at the joints with the shells of the differential threaded decelerators. The shells of the differential threaded decelerators can slide relative to each other.Each flexible hinge is of an eight-side shape structure, the four sides in the orthogonal direction are non-deformable installation surfaces, and the other four sides of each flexible hinge are deformable thin plates. The motors drive the shells of the differential threaded decelerators to move axially and drive the deformable thin plates of the flexible hinges to change the angle so as to realize radial movement of the non-deformable installation surfaces of the flexible hinges. Through three-dimensional adjustment of the flexible support mechanisms, the adjustment of mirrors installed on the non-deformable installation surfaces is realized.

Description

technical field [0001] The invention relates to a high-precision and high-stability reflector adjustment device based on a flexible hinge, which belongs to the field of precision machinery and can be used in the adjustment link of space optical remote sensing cameras and ground precision instruments requiring high precision and high stability. Background technique [0002] In most cases, during the installation and adjustment process of space optical instruments on the ground, the mirror assembly is adjusted in place with the help of a general-purpose multi-dimensional adjustment platform or an industrial robot arm, and the reflection The mirror assembly is effectively fixed, and then the universal adjustment mechanism is removed. The advantage of this solution is that it is simple to implement, but the disadvantage is that there will be residual position deviation during the component fixing process. In addition, this method is a one-time adjustment, which cannot be correct...

Claims

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Application Information

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IPC IPC(8): G02B7/182
CPCG02B7/1821
Inventor 蔡伟军丁世涛李富强张凤芹范俊杰郑君郭容光罗廷云张占东
Owner BEIJING RES INST OF SPATIAL MECHANICAL & ELECTRICAL TECH
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