Bonding method for punching hole in optical glass
A technology of optical glass and bonding method, applied in the direction of stone processing tools, work accessories, manufacturing tools, etc., can solve the problems of easily scratched surface, change of glass surface shape, etc., to prevent shape processing and hole bottom chipping. Effect
Active Publication Date: 2015-03-25
SHANGHAI MODERN ADVANCED ULTRA PRECISION MFG CENT
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Problems solved by technology
[0003] The purpose of the present invention is to overcome the deficiencies in the above-mentioned prior art, to propose a bonding method for optical glass processing, to solve the problem that the surface is easily scratched when the polished optical glass is glued to the spacer glass, and there are air bubbles between the two glasses. And it is easy to cause problems such as changes in the glass surface
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[0023] The present invention will be further described in detail below in conjunction with the accompanying drawings.
[0024] The surface shape of the 4*58 area around the control hole is 0.1, and the rest of the area is 0.3. After heating and bonding, the deformation reaches the drawing index. There is no scratch on the surface when gluing, and no chipping at the bottom during processing. The steps to take are as follows:
[0025] ① Select a suitable spacer glass and wipe it. The side length of the spacer glass is 0.5mm smaller than the side length of the optical glass to be processed; in this embodiment, the 79*79*3mm schottBK7 glass sheet after magnetorheological polishing is tested. Its face shape is 0.1 in. The spacer glass is 78*78*4 k9 glass, and its flatness is 0.005mm.
[0026] ②Confirm whether the optical glass is damaged. Wear clean gloves and a mask on the ultra-clean workbench, wipe the glass with a dust-free cloth dipped in acetone, and carefully observe the s...
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Abstract
The invention discloses a bonding method for punching a hole in optical glass. The bonding method comprises the steps that proper cushion block glass is selected and wiped; it is confirmed that the optical glass to be machined is not damaged; white wax is heated in a stainless steel pot; the optical glass to be machined and the cushion block glass are heated; the heated optical glass to be machined and the heated cushion block glass are placed in the stainless steel pot containing the white wax to be bonded; then, the optical glass and the cushion block glass are taken out of the stainless steel pot to be bonded with a clamp. According to the method, the face type of a polished part can be effectively controlled, the polished face of the part is controlled not to be scratched, and appearance machining and the phenomenon of edge breakage of the bottom of the punched hole are completely eradicated.
Description
technical field [0001] The invention relates to the technical field of photoetching machine optical glass processing, in particular to a bonding method for optical glass processing. Background technique [0002] At present, the center thickness of 52*52 and 58*58mm in European and American countries is 2.5mm, and the material is small hole punched by SCHOTT BK7 (diameter 1.8-2.5mm). The bonding between the hole glass and the pad is particularly important. The technical requirements proposed in the drawing stipulate that the surface shape of the 4*58 area around the hole is 0.1 um (1 um = 0.6328um), so it must be polished before drilling, otherwise After drilling and polishing, the hole will experience a sag effect. This makes it difficult to accurately control the surface shape of the polished part, the polished surface of the part is easily scratched, and problems such as chipping at the bottom of the punched hole occur. Contents of the invention [0003] The purpose of...
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IPC IPC(8): B28D1/14B28D7/04
CPCB28D1/14B28D7/04
Inventor 陈静黄晨浩笪永康韩庆刘天豪
Owner SHANGHAI MODERN ADVANCED ULTRA PRECISION MFG CENT