Polishing device for eliminating coining effect of lightweight reflecting mirror

A light-weight reflector and polishing device technology, applied in grinding/polishing equipment, optical surface grinders, grinders, etc., to achieve the effects of eliminating embossing deformation, simple control, and high integration

Active Publication Date: 2011-09-14
INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem of the present invention is to overcome the deficiencies of the prior art and provide a polishing device that eliminates the embossing effect of light reflecto...

Method used

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  • Polishing device for eliminating coining effect of lightweight reflecting mirror
  • Polishing device for eliminating coining effect of lightweight reflecting mirror
  • Polishing device for eliminating coining effect of lightweight reflecting mirror

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Experimental program
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Embodiment Construction

[0029] Such as figure 1 , 2 As shown, the present invention is made up of immersion type sealed polishing platform and precise inflation device. The immersion-type sealed polishing platform is composed of a sealed cylinder 8, a top cover 2, a support seat 4, a steel ball 5, an arc-shaped fixture 3 and an elastic sealing ring 1, and the precision inflation device is composed of a micro air pump 9, a DC power supply 10, a precision stop valve 14, The precise pressure relief valve 11, the membrane air pressure gauge 12, the four-way body 13 and the silicone tube 15 are composed.

[0030] Three triangular support seats 4 with hemispherical grooves at the center of gravity of the bottom side are placed on three steel balls 5 on the bottom surface of the inner cavity of the sealed cylinder 8, and three gaskets 6 are bonded to the upper surface of each triangular support seat 4 to form nine points The structure of the supporting seat; the lightweight reflector 7 is placed on the ni...

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PUM

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Abstract

The invention discloses a polishing device for eliminating the coining effect of a lightweight reflecting mirror, which is suitable for a polishing device for machining a reflecting mirror with a large aperture, high lightweight and a high radius-thickness ratio at high accuracy and belongs to the field of machining of optical surfaces. The device consists of a sealing cylinder, a top cover, a support seat, an arc-shaped fixture, an elastic seal ring, a minitype air pump, a precise stop valve, a precise decompression valve, a four-way body and a silicone tube. In the polishing process, high-accuracy polishing is caused by discontinuous elastic deformation of a mirror surface corresponding to an inner cavity hole of the lightweight reflecting mirror and a rib-bonded mirror surface due to impressed pressure, and then the coining effect that the surface is wave-shaped has become a technical barrier of high-accuracy machining of the lightweight structural reflecting mirror. By the polishing device disclosed by the invention, the reflecting mirror is soaked in a seal cavity which consists of the sealing cylinder, the top cover and the elastic seal ring, and the inner cavity of the sealcavity is inflated. The surface of the lightweight reflecting mirror is balanced under the action of gravity, grinding head pressure and reverse inflation pressure, the coining effect is eliminated, and the reflecting mirror with the large aperture and the high lightweight can be machined at the high accuracy.

Description

technical field [0001] The invention mainly relates to a polishing device for eliminating the embossing effect of a lightweight reflector, belonging to the technical field of precision optical processing, in particular to a polishing device for eliminating the embossing effect of a large-diameter, high-light-weight reflector. Background technique [0002] In recent years, with the development of aerospace technology, functional materials with high strength, low deformation and high reflectivity (such as: fused silica, ULE, microcrystal, SiC, etc.) have been rapidly applied in this field. In order to pursue the light-gathering ability and resolution ability of the optical system, and save manufacturing and emission costs, the imaging quality of the system is generally improved by using light-weight and large-size aspheric optical elements, and the thickness of the mirror surface is getting thinner, that is, the diameter of the primary mirror The thickness ratio is getting hig...

Claims

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Application Information

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IPC IPC(8): B24B13/00
Inventor 钟显云范斌徐清兰
Owner INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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