CN102408183B - Production process for optical glass lenses - Google Patents
Production process for optical glass lenses Download PDFInfo
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- CN102408183B CN102408183B CN 201110210933 CN201110210933A CN102408183B CN 102408183 B CN102408183 B CN 102408183B CN 201110210933 CN201110210933 CN 201110210933 CN 201110210933 A CN201110210933 A CN 201110210933A CN 102408183 B CN102408183 B CN 102408183B
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Abstract
The invention discloses a production process for optical glass lenses, which comprises the following steps of: (1) carrying out dry cutting on raw glass materials so as to obtain small pieces of glass blanks; (2) carrying out vibration grinding milling or water milling processing on the glass blanks so as to polish corners of the glass blanks; (3) carrying out powder coating processing on the surfaces of the glass blanks, wherein the powder refers to boron nitrides; (4) heating the glass blanks subjected to powder coating processing to 800-980 DEG C so as to soften the glass blanks; (5) carrying out profiling processing on the softened glass blanks in a fire-polishing profiling mould so as to form an initial product, wherein the fire-polishing temperature is 500-540 DEG C, and the glass blanks are blown one time by using cold air when the glass blanks are fed into and out of the mould; and (6) carrying out annealing processing on the initial product, wherein the annealing temperature is less than the glass softening point (10-20 DEG C). Compared with the prior art, the peripheral side of a glass product produced by using the production process for optical glass lenses disclosed by the invention is smooth and has no indentation, therefore, the production process disclosed by the invention can meet the production requirements of some special glass.
Description
Technical field
The present invention relates to the optical mirror slip manufacture field, exactly refer to a kind of production technique of optical glass lens.
Background technology
At present, by the glass blank die mould, glassy product out is that peripheral side is more coarse to casted die mould, has impression, can not meet the production requirement of some specific glass, and its production technique needs to improve.
Summary of the invention
For above-mentioned defect, the technical problem that the present invention solves is to provide a kind of production technique of optical glass lens, and the peripheral side of the glassy product of production is smooth, there is no impression, can meet the production requirement of some specific glass.
In order to solve above technical problem, the production technique of optical glass lens provided by the invention, comprise the steps:
(1), by the dry glass blank be cut into small pieces of glass raw material;
(2), glass blank is repaiied to vibration or water mill processing, the corner of polishing glass blank;
(3), the glass blank surface be coated with to powder processed, described powder is boron nitride;
(4), the glass blank after being coated with powder and processing be heated to 800 ℃-980 ℃ softening;
(5), the glass blank after softening is carried out in the fire polishing casted die mould to the die mould processing, form head product, the temperature of fire polishing is 500 ℃-540 ℃, when glass blank enters mould and depanning, each blows once with freezing air;
(6), head product is carried out to anneal, annealing temperature is lower than 10 ℃-20 ℃ of glass softening points.
More preferably, in step (3), when being coated with powder and processing, the 10kg glass blank is coated with the powder of 0.4kg-0.6kg, and the 60%-80% of the painting powder amount at the position of processing near the fire polishing painting powder amount that is other positions.
More preferably, in step (3), when being coated with powder and processing, the 10kg glass blank is coated with the powder of 0.5kg, and the painting powder amount at the position of processing near the fire polishing painting powder amount that is other positions 75%.
More preferably, in step (4), the glass blank after the painting powder is processed is heated to 810 ℃-970 ℃ and softens.
More preferably, in step (4), the glass blank after the painting powder is processed is heated to 820 ℃-960 ℃ and softens.
More preferably, in step (5), the temperature of fire polishing is 510 ℃-530 ℃.
More preferably, in step (5), the time of glass blank depanning is 0.2s-0.3s.
More preferably, in step (5), the air pressure of freezing air is 3-6 normal atmosphere, and the temperature of freezing air is ambient temperature.
More preferably, in step (5), the fire polishing casted die mould comprises the upper core of execution, the lower core of execution and execution die body, in described execution, core, the lower core of execution and described execution die body coordinate the glass blank die mould, under described execution, the cross section of core is circular configuration, under described execution, the top of core is arc, and the radius of described arc is 40mm-70mm, and the radian of described arc is 30 °-150 °; The two ends of described execution die body are respectively arranged with " U " connected in star, described groove is provided with chamfering, the angle of described chamfering is 90 °, and the radius of described chamfering is 0.5mm-5mm, and the middle part of described execution die body is provided with hollow via-hole the groove at described execution die body two ends is connected; In described execution, core is identical with the structure of core under described execution.
More preferably, between step (2) and step (3), also comprising: the glass blank after polishing is carried out to initial survey, reject underproof glass blank.
The production technique of optical glass lens provided by the invention, comprise the steps: (1), by the dry glass blank be cut into small pieces of glass raw material; (2), glass blank is repaiied to vibration or water mill processing, the corner of polishing glass blank; (3), the glass blank surface be coated with to powder processed, described powder is boron nitride; (4), the glass blank after being coated with powder and processing be heated to 800 ℃-980 ℃ softening; (5), the glass blank after softening is carried out in the fire polishing casted die mould to the die mould processing, form head product, the temperature of fire polishing is 500 ℃-540 ℃, when glass blank enters mould and depanning, each blows once with freezing air; (6), head product is carried out to anneal, annealing temperature is lower than 10 ℃-20 ℃ of glass softening points.Compared with prior art, the production technique of optical glass lens provided by the invention, the peripheral side of the glassy product that it is produced is smooth, there is no impression, can meet the production requirement of some specific glass.
The accompanying drawing explanation
The FB(flow block) that Fig. 1 is the production technique of optical glass lens in the present invention;
The structural representation of core under the execution that Fig. 2 is fire polishing casted die mould in step of the present invention (5);
The structural representation that Fig. 3 is the execution die body of fire polishing casted die mould in step of the present invention (5).
Embodiment
For those skilled in the art can understand technical scheme provided by the present invention better, below in conjunction with specific embodiment, set forth.
Refer to Fig. 1, the FB(flow block) that this figure is the production technique of optical glass lens in the present invention.
Embodiment 1
The production technique of the optical glass lens that the present embodiment provides, comprise the steps:
(1), by the dry glass blank be cut into small pieces of glass raw material;
(2), glass blank is repaiied to vibration or water mill processing, the corner of polishing glass blank;
(3), the glass blank surface be coated with to powder processed, described powder is boron nitride, when being coated with powder and processing, the 10kg glass blank is coated with the powder of 0.5kg, and the painting powder amount at the position of processing near the fire polishing painting powder amount that is other positions 75%;
(4), the glass blank after being coated with powder and processing be heated to 860 ℃ softening;
(5), the glass blank after softening is carried out in the fire polishing casted die mould to the die mould processing, form head product, the temperature of fire polishing is 520 ℃, when glass blank enters mould and depanning, each blows once with freezing air, and the time of glass blank depanning is 0.25s, and the air pressure of freezing air is 4 normal atmosphere, the temperature of freezing air is ambient temperature, the blowing cold air purpose is to remove steam treatment, not only can dedusting, and the demoulding is convenient in its mould cooling;
(6), head product is carried out to anneal, annealing temperature is lower than 15 ℃ of glass softening points.
In addition, between step (2) and step (3), also comprising: the glass blank after polishing is carried out to initial survey, reject underproof glass blank.
The production technique of the optical glass lens that the present embodiment provides, comprise the steps:
(1), by the dry glass blank be cut into small pieces of glass raw material;
(2), glass blank is repaiied to vibration or water mill processing, the corner of polishing glass blank;
(3), the glass blank surface be coated with to powder processed, described powder is boron nitride, when being coated with powder and processing, the 10kg glass blank is coated with the powder of 0.6kg, and the painting powder amount at the position of processing near the fire polishing painting powder amount that is other positions 80%;
(4), the glass blank after being coated with powder and processing be heated to 980 ℃ softening;
(5), the glass blank after softening is carried out in the fire polishing casted die mould to the die mould processing, form head product, the temperature of fire polishing is 540 ℃, when glass blank enters mould and depanning, each blows once with freezing air, the time of glass blank depanning is 0.3s, and the air pressure of freezing air is 6 normal atmosphere, and the temperature of freezing air is that ambient temperature blowing cold air purpose is to remove steam treatment, not only can dedusting, and the demoulding is convenient in its mould cooling;
(6), head product is carried out to anneal, annealing temperature is lower than 20 ℃ of glass softening points.
In addition, between step (2) and step (3), also comprising: the glass blank after polishing is carried out to initial survey, reject underproof glass blank.
Embodiment 3
The production technique of the optical glass lens that the present embodiment provides, comprise the steps:
(1), by the dry glass blank be cut into small pieces of glass raw material;
(2), glass blank is repaiied to vibration or water mill processing, the corner of polishing glass blank;
(3), the glass blank surface be coated with to powder processed, described powder is boron nitride, when being coated with powder and processing, the 10kg glass blank is coated with the powder of 0.4kg, and the painting powder amount at the position of processing near the fire polishing painting powder amount that is other positions 60%;
(4), the glass blank after being coated with powder and processing be heated to 800 ℃ softening;
(5), the glass blank after softening is carried out in the fire polishing casted die mould to the die mould processing, form head product, the temperature of fire polishing is 500 ℃, when glass blank enters mould and depanning, each blows once with freezing air, the time of glass blank depanning is 0.2s, and the air pressure of freezing air is 3 normal atmosphere, and the temperature of freezing air is that ambient temperature blowing cold air purpose is to remove steam treatment, not only can dedusting, and the demoulding is convenient in its mould cooling;
(6), head product is carried out to anneal, annealing temperature is lower than 10 ℃ of glass softening points.
In addition, between step (2) and step (3), also comprising: the glass blank after polishing is carried out to initial survey, reject underproof glass blank.
Refer to Fig. 2 and Fig. 3, the structural representation of core under the execution that Fig. 2 is fire polishing casted die mould in step of the present invention (5); The structural representation that Fig. 3 is the execution die body of fire polishing casted die mould in step of the present invention (5).
The fire polishing casted die mould provided in step of the present invention (5), comprise core (not shown) and execution die body 2 in the lower core 1 of execution, execution, in the lower core 1 of execution, execution, core and execution die body 2 coordinate the glass blank die mould, the cross section of the lower core 1 of execution is circular configuration, the top of the lower core 1 of execution is arc, the radius R 1 of arc is 54mm, and the radian a1 of arc is 120 °; The two ends of execution die body 2 are respectively arranged with " U " connected in star 21, " U " connected in star 21 is provided with chamfering 22, the angle of chamfering 22 is 90 °, and the radius of chamfering 22 is 2mm, and the middle part of execution die body 2 is provided with will be executed groove 21 connections at die body 2 two ends of hollow via-hole 23; The lower core 1 of execution is identical with the structure of the lower core of execution.
In step of the present invention (5), the concrete dimensional structure of the fire polishing casted die mould of opticglass is as follows:
The diameter b 2 of " U " connected in star 21 is 80.22mm; The height h3 of " U " connected in star 21 is 20mm; The diameter b 1 of the rounded section of the lower core 1 of execution is 73.10mm; The diameter b 3 of the hollow via-hole 23 of execution die body 2 is 73.24mm; The height h1 of the lower core 1 of execution is 59.25mm; The height h2 of execution die body 2 is 65mm.The smooth finish of the lower core 1 of execution and execution die body 2 is 0.8.
Compared with prior art, the production technique of optical glass lens provided by the invention, the peripheral side of the glassy product of producing is smooth, there is no impression, can meet the production requirement of some specific glass.
To the above-mentioned explanation of the disclosed embodiments, make professional and technical personnel in the field can realize or use the present invention.Multiple modification to these embodiment will be apparent for those skilled in the art, and General Principle as defined herein can be in the situation that do not break away from the spirit or scope of the present invention, realization in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (8)
1. the production technique of an optical glass lens, is characterized in that, comprises the steps:
(1), by the dry glass blank be cut into small pieces of glass raw material;
(2), glass blank is repaiied to vibration or water mill processing, the corner of polishing glass blank;
(3), the glass blank surface being coated with to powder processes, described powder is boron nitride, when being coated with powder and processing, the 10kg glass blank is coated with the powder of 0.4kg-0.6kg, and the 60%-80% of the painting powder amount at the position of processing near the fire polishing painting powder amount that is other positions;
(4), the glass blank after being coated with powder and processing be heated to 800 ℃-980 ℃ softening;
(5), the glass blank after softening is carried out in the fire polishing casted die mould to the die mould processing, form head product, the temperature of fire polishing is 500 ℃-540 ℃, when glass blank enters mould and depanning, each blows once with freezing air; The fire polishing casted die mould comprises the upper core of execution, the lower core of execution and execution die body, in described execution, core, the lower core of execution and described execution die body coordinate the glass blank die mould, under described execution, the cross section of core is circular configuration, under described execution, the top of core is arc, the radius of described arc is 40mm-70mm, and the radian of described arc is 30 °-150 °; The two ends of described execution die body are respectively arranged with " U " connected in star, described groove is provided with chamfering, the angle of described chamfering is 90 °, and the radius of described chamfering is 0.5mm-5mm, and the middle part of described execution die body is provided with hollow via-hole the groove at described execution die body two ends is connected; In described execution, core is identical with the structure of core under described execution;
(6), head product is carried out to anneal, annealing temperature is lower than 10 ℃-20 ℃ of glass softening points.
2. the production technique of optical glass lens according to claim 1, it is characterized in that, in step (3), while being coated with the powder processing, the 10kg glass blank is coated with the powder of 0.5kg, and the painting powder amount at the position of processing near the fire polishing painting powder amount that is other positions 75%.
3. the production technique of optical glass lens according to claim 1, is characterized in that, in step (4), the glass blank after the painting powder is processed is heated to 810 ℃-970 ℃ and softens.
4. the production technique of optical glass lens according to claim 3, is characterized in that, in step (4), the glass blank after the painting powder is processed is heated to 820 ℃-960 ℃ and softens.
5. the production technique of optical glass lens according to claim 1, is characterized in that, in step (5), the temperature of fire polishing is 510 ℃-530 ℃.
6. the production technique of optical glass lens according to claim 1, is characterized in that, in step (5), the time of glass blank depanning is 0.2s-0.3s.
7. the production technique of optical glass lens according to claim 1, is characterized in that, in step (5), the air pressure of freezing air is 3-6 normal atmosphere, and the temperature of freezing air is ambient temperature.
8. the production technique of optical glass lens according to claim 1, is characterized in that, between step (2) and step (3), also comprising: the glass blank after polishing is carried out to initial survey, reject underproof glass blank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110210933 CN102408183B (en) | 2011-07-26 | 2011-07-26 | Production process for optical glass lenses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110210933 CN102408183B (en) | 2011-07-26 | 2011-07-26 | Production process for optical glass lenses |
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| Publication Number | Publication Date |
|---|---|
| CN102408183A CN102408183A (en) | 2012-04-11 |
| CN102408183B true CN102408183B (en) | 2013-12-25 |
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| CN 201110210933 Active CN102408183B (en) | 2011-07-26 | 2011-07-26 | Production process for optical glass lenses |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103645526B (en) * | 2013-12-24 | 2016-03-16 | 成都恒达光学有限公司 | A kind of production technology of pentaprism |
| CN105016606A (en) * | 2015-07-06 | 2015-11-04 | 雅安格纳斯光电科技有限公司 | Manufacturing method for bright optical lens |
| CN105036526A (en) * | 2015-09-09 | 2015-11-11 | 四川格纳斯光电科技股份有限公司 | Pressing method |
| CN106291787B (en) * | 2016-08-31 | 2018-09-18 | 成都恒达光学有限公司 | A kind of prism processing technology |
| CN109721246B (en) * | 2017-10-30 | 2021-12-07 | 浙江晶华玻璃有限公司 | Glass bottle capable of resisting high-temperature fire polishing at 1300 ℃ without deformation and preparation method thereof |
| CN108089320A (en) * | 2017-12-27 | 2018-05-29 | 重庆市华阳光学仪器有限公司 | A kind of production technology of telescope disk |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1061204A (en) * | 1991-07-25 | 1992-05-20 | 天津市硅酸盐研究所 | Demolding agent of glass forming mold |
| EP0573020A1 (en) * | 1992-06-04 | 1993-12-08 | Matsushita Electric Industrial Co., Ltd. | Method of manufacturing molded glass |
| CN1740105A (en) * | 2004-07-19 | 2006-03-01 | 肖特股份公司 | Process and device for producing fire-polished gobs |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008100872A (en) * | 2006-10-19 | 2008-05-01 | Hoya Corp | Method of manufacturing glass preform and method of manufacturing optical element |
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- 2011-07-26 CN CN 201110210933 patent/CN102408183B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1061204A (en) * | 1991-07-25 | 1992-05-20 | 天津市硅酸盐研究所 | Demolding agent of glass forming mold |
| EP0573020A1 (en) * | 1992-06-04 | 1993-12-08 | Matsushita Electric Industrial Co., Ltd. | Method of manufacturing molded glass |
| CN1740105A (en) * | 2004-07-19 | 2006-03-01 | 肖特股份公司 | Process and device for producing fire-polished gobs |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2008－100872A 2008.05.01 |
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