Microstress assembling method for large-caliber reflector assembly

A technology for large-diameter mirrors and assembly methods, applied in installation, optical components, optics, etc., can solve problems such as large assembly stress, affecting the surface quality and structural stability of the mirror, and reduce the difficulty of assembly and adjustment Uniform force, easy to achieve effect

A technology for large-diameter mirrors and assembly methods, applied in installation, optical components, optics, etc., can solve problems such as large assembly stress, affecting the surface quality and structural stability of the mirror, and reduce the difficulty of assembly and adjustment Uniform force, easy to achieve effect

CN104459936AActive Publication Date: 2015-03-25BEIJING RES INST OF SPATIAL MECHANICAL & ELECTRICAL TECH
4 Cites 14 Cited by

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Microstress assembling method for large-caliber reflector assembly
  • Microstress assembling method for large-caliber reflector assembly
  • Microstress assembling method for large-caliber reflector assembly

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] Specific implementation examples

[0026] Such as image 3 As shown, in the assembly process of small and medium-sized optical components in the past, due to the small gravity deformation, it has little effect on the assembly stress of the components, and there is no need to consider the factor of gravity unloading. However, in large-aperture optical components, due to the large span of the three fixed points, the amount of gravitational deformation reaches the micron level. In this case, fixing the connecting screws will lock the gravitational deformation in the component, forming assembly stress. And then affect the surface quality of the mirror.

[0027] After adopting the method, the gravitational deformation of the optical component can be reduced to the minimum. Effectively guarantee the consistency of the sky and the ground, and ensure the optical assembly quality of the remote sensor.

[0028] Such as figure 1 As shown, the principle diagram of the method o...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a microstress assembling method for a large-caliber reflector assembly. Related devices comprise sensors, supporting rods, weights, a base, pulling ropes and a tray. Firstly, the mechanical sensors are fixedly installed on the base; secondly, the reflector assembly is placed on the base through three ball head gaskets; thirdly, the supporting rods are installed at the designated positions of the base, one end of each pulling rope is bound to a disassembling point, the pulling ropes wind around two fixed pulleys on the supporting rods, and the weights are bound at the other ends of the pulling ropes. At the moment, whether gravity disassembling is in place or not is judged through reading of the mechanical sensors, and the weight of the weights is adjusted in a fine mode until the reading of the sensors is zero. Finally, after disassembling is completed, a torque wrench is used for screwing screws of the reflector assembly to the preset torque, and disassembling and assembling of the reflector assembly are completed. Thus, microstress assembling of the reflector assembly is achieved, and the reflector surface shape quality and the structural stability of an optical remote sensor are ensured.

Description

technical field [0001] The invention belongs to the technical field of mirror assembly for aerospace optical remote sensors, and relates to a micro-stress assembly method for a large-diameter mirror assembly, in particular to the assembly of a frame-mounted mirror assembly. Background technique [0002] The optical mirror is the core component of the aerospace remote sensing camera, and its surface shape accuracy and position accuracy directly affect the imaging quality of the optical system. The micro-stress assembly technology of mirror components is a key link in the development of space cameras. With the increasing demand for large-aperture mirrors, it is more difficult to assemble frame-mounted mirror components. [0003] Such as Figure 4 As shown, in the support design of large-aperture mirrors, three-point support is often used as a limit fixation and does not participate in unloading. At this time, other methods are needed to realize the unloading of the mirror fram...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
25 Mar 2015
Publication
CN104459936A
IPC
G02B7/183
CPC
G02B7/183
Inventors
赵野; 周于鸣