CN-115971974-B - Processing technology of high-finish optical glass head cover and product

Abstract

The invention discloses a processing technology of an optical glass head cover with high finish, which is characterized in that a blank segment which is detected to be qualified is subjected to fine grinding, then is polished by a high-speed polishing method, and is cleaned by a cleaning liquid to obtain the optical glass head cover. The optical glass head cover has the advantages of high smoothness, good surface type precision, small center deviation and curvature radius tolerance, no deformation and small surface roughness. And the polishing powder solution composed of the polishing powder, water and citric acid is selected, so that the uniform dispersibility and the processing stability of the polishing powder solution can be promoted, higher smoothness is achieved, the polishing rate is accelerated, and the supplementing frequency of the polishing solution is reduced. The obtained optical glass head cover has accurate size and excellent high temperature resistance, can meet the accurate positioning and emission requirements in army military devices and equipment, and has wide application prospects in the army military field.

Inventors

• CHEN QI

Assignees

• 苏州启明玻璃仪器有限公司

Dates

Publication Date

20260508

Application Date

20220613

Claims (4)

1. 1. The processing technology of the high-finish optical glass head cover is characterized by comprising the following steps of: (1) Detecting the surface precision, the center thickness dimension and the surface roughness of the transparent blank; (2) Fine grinding, namely adopting a fine grinding die to conduct fine grinding treatment on the transparent blank which is inspected to be qualified in the step (1), and further improving the surface precision, the size requirement and the surface error; (3) Polishing, namely attaching the transparent blank obtained in the step (2) with a polishing grinding tool through a polishing film, and performing polishing treatment; (4) Cleaning, namely cleaning the surface of the product obtained after the treatment in the step (3) through a cleaning agent so as to meet the quality inspection requirement; The specific operation of fine grinding is that a double-component adhesive is used for adhering diamond pellets to the surface of a fine grinding die, and the lens is subjected to fine grinding treatment in two stages, so that the surface precision, the size requirement and the surface error are further improved; the average granularity of the diamond pellets in the first stage in the fine grinding treatment is 700-1500 #, the fine grinding treatment time is 60-100 s, and the rotating speed of the fine grinding treatment is 500-1000 revolutions per minute; The average granularity of the diamond pellets in the second stage in the fine grinding treatment is 1300-2000 #, the fine grinding treatment time is 170-240 s, and the rotating speed of the fine grinding treatment is 800-1500 r/min; the size of the first section in the fine grinding treatment is 0.15-0.3+/-0.05 mm, and the size of the second section in the fine grinding treatment is 0.01-0.05+/-0.02 mm; The polishing treatment mode is high-speed polishing, the rotating speed of the high-speed polishing is 1000-2000 rpm, and the time of the high-speed polishing is 1000-1800 s; The polishing powder solution consists of polishing powder, water and citric acid.
2. 2. The process of claim 1, wherein the two-component adhesive is selected from the group consisting of two-component acrylic adhesives, two-component epoxy adhesives, and two-component polyurethane adhesives.
3. 3. A process for manufacturing a high finish optical glass head cover according to claim 1 or 2, wherein the average particle size of the diamond pellets of the first stage in the finish grinding treatment is 1200#, the finish grinding treatment time is 80s, and the rotational speed of the finish grinding treatment is 800 rpm; the average grain size of the second stage diamond balls in the fine grinding treatment is 1500#, the fine grinding treatment time is 200s, and the rotating speed of the fine grinding treatment is 1000 r/min.
4. 4. A high finish optical glass head cover obtained by the process of any one of claims 1 to 3.

Description

Processing technology of high-finish optical glass head cover and product Technical Field The invention relates to the field of optical lens processing, in particular to a processing technology and a product of a high-finish optical glass head cover, and B24B 13/00. Background The lens is an optical element prepared from transparent substances with specific elements, has the advantages of light condensation, light transmission, imaging, light diffusion and the like, has important influence in the fields of traffic, military industry, medical treatment, astronomy and the like, is a core component, has different high requirements on surface roughness, surface type precision and the like in different application scenes, and determines the advantages and disadvantages of performance parameters by the processing technology of the optical lens. For the optical lens with high requirements, more classical polishing modes are selected to ensure that the optical lens meets the standard, but the processing efficiency is low, and on the premise of adopting a processing technology of high-speed polishing, a finished product with high finish and high precision can be obtained, and further research and development are needed. Patent CN201910067327.3 provides a ZNSE lens polishing process, which is obtained by dividing an electroplated diamond grinding wheel and polishing solution, then carrying out rough grinding, fine grinding, edging and detection on a grinding disc by using the polishing solution, adding diamond micro powder into the polishing solution, increasing the polishing fineness, shortening the processing time, but causing deformation of the lens due to the rise of temperature in the processing process, and reducing the precision. Patent CN202011234248.6 discloses a processing technology of an optical lens, which is processed through the processes of milling, fine grinding, polishing, edging, cleaning, coating, inking and gluing, and in the fine grinding process, a spray nozzle is added, so that the temperature is controlled in the processing process, and the processing precision is further improved. But the spraying during the process affects the operation of the operator and increases the process cost. Disclosure of Invention In order to solve the above problems, a first aspect of the present invention provides a process for manufacturing a high-finish optical glass head cover, comprising the steps of: (1) And detecting the blank, namely detecting the surface type precision, the center thickness dimension and the surface roughness of the transparent blank. In some preferred embodiments, the transparent blank is selected from one or more of glass, quartz, preferably the transparent blank is quartz, further preferably the quartz is ultraviolet fused quartz. The ultraviolet fused quartz is selected from one of JGS1, JGS2, JGS3 and 7980, and preferably the ultraviolet fused quartz is 7980. (2) And (3) fine grinding, namely adopting a fine grinding die to conduct fine grinding treatment on the transparent blank which is inspected to be qualified in the step (1), and further improving the surface precision, the size requirement and the surface error. Preferably, the precise grinding is carried out by adhering diamond pellets to the surface of a precise grinding mould by using a two-component adhesive, and precisely grinding the lens in two stages, thereby further improving the surface precision, the size requirement and the surface error. In some preferred embodiments, the two-part adhesive is selected from one of a two-part acrylic adhesive, a two-part epoxy adhesive, and a two-part polyurethane adhesive, and preferably, the two-part adhesive is a two-part polyurethane adhesive. In some preferred embodiments, the two-component polyurethane adhesive has a mixed viscosity of 50-200 mPas and a weight ratio of component A to component B of (2-3): 1, preferably, the two-component polyurethane adhesive has a mixed viscosity of 100 mPas and a weight ratio of component A to component B of 2.4:1. In some preferred embodiments, the finishing die is custom made by Suzhou open glass instruments Inc. and is configured with a fixed fixture to effect the finishing process. In some preferred embodiments, the average particle size of the diamond pellets of the first stage in the fine grinding treatment is 700-1500 #, the fine grinding treatment time is 60-100 s, the rotating speed of the fine grinding treatment is 500-1000 rpm, preferably, the average particle size of the diamond pellets of the first stage in the fine grinding treatment is 1200#, the fine grinding treatment time is 80s, and the rotating speed of the fine grinding treatment is 800 rpm. In some preferred embodiments, the average particle size of the diamond pellets of the second stage in the fine grinding treatment is 1300-2000 #, the fine grinding treatment time is 170-240 s, the rotation speed of the fine grinding treatment is 800-1500 rpm, preferably, the average