JPH0471853B2 - - Google Patents
Info
- Publication number
- JPH0471853B2 JPH0471853B2 JP29140987A JP29140987A JPH0471853B2 JP H0471853 B2 JPH0471853 B2 JP H0471853B2 JP 29140987 A JP29140987 A JP 29140987A JP 29140987 A JP29140987 A JP 29140987A JP H0471853 B2 JPH0471853 B2 JP H0471853B2
- Authority
- JP
- Japan
- Prior art keywords
- glass
- mold
- cutting
- molding
- molded
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000011521 glass Substances 0.000 claims description 94
- 238000000465 moulding Methods 0.000 claims description 60
- 239000012530 fluid Substances 0.000 claims description 45
- 238000003825 pressing Methods 0.000 claims description 26
- 230000003287 optical effect Effects 0.000 claims description 19
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 230000009477 glass transition Effects 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 description 78
- 239000000047 product Substances 0.000 description 45
- 238000000034 method Methods 0.000 description 29
- 239000006060 molten glass Substances 0.000 description 17
- 239000000463 material Substances 0.000 description 7
- 238000002844 melting Methods 0.000 description 6
- 230000008018 melting Effects 0.000 description 6
- 230000007547 defect Effects 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 230000002093 peripheral effect Effects 0.000 description 4
- 238000005498 polishing Methods 0.000 description 4
- 239000012467 final product Substances 0.000 description 3
- 239000005304 optical glass Substances 0.000 description 3
- 230000001590 oxidative effect Effects 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical group [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000012805 post-processing Methods 0.000 description 2
- 238000003303 reheating Methods 0.000 description 2
- 230000002123 temporal effect Effects 0.000 description 2
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 2
- 206010049040 Weight fluctuation Diseases 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000005499 meniscus Effects 0.000 description 1
- 239000006082 mold release agent Substances 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B7/00—Distributors for the molten glass; Means for taking-off charges of molten glass; Producing the gob, e.g. controlling the gob shape, weight or delivery tact
- C03B7/10—Cutting-off or severing the glass flow with the aid of knives or scissors or non-contacting cutting means, e.g. a gas jet; Construction of the blades used
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B11/00—Pressing molten glass or performed glass reheated to equivalent low viscosity without blowing
- C03B11/06—Construction of plunger or mould
- C03B11/08—Construction of plunger or mould for making solid articles, e.g. lenses
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B11/00—Pressing molten glass or performed glass reheated to equivalent low viscosity without blowing
- C03B11/16—Gearing or controlling mechanisms specially adapted for glass presses
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B21/00—Severing glass sheets, tubes or rods while still plastic
- C03B21/02—Severing glass sheets, tubes or rods while still plastic by cutting
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2215/00—Press-moulding glass
- C03B2215/40—Product characteristics
- C03B2215/46—Lenses, e.g. bi-convex
- C03B2215/48—Convex-concave
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2215/00—Press-moulding glass
- C03B2215/70—Horizontal or inclined press axis
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2215/00—Press-moulding glass
- C03B2215/76—Pressing whereby some glass overflows unrestrained beyond the press mould in a direction perpendicular to the press axis
- C03B2215/77—Pressing whereby some glass overflows unrestrained beyond the press mould in a direction perpendicular to the press axis with means to trim off excess material
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
- Container, Conveyance, Adherence, Positioning, Of Wafer (AREA)
- Manipulator (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29140987A JPH01133948A (ja) | 1987-11-18 | 1987-11-18 | 光学素子の製造方法 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29140987A JPH01133948A (ja) | 1987-11-18 | 1987-11-18 | 光学素子の製造方法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01133948A JPH01133948A (ja) | 1989-05-26 |
| JPH0471853B2 true JPH0471853B2 (ko) | 1992-11-16 |
Family
ID=17768519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29140987A Granted JPH01133948A (ja) | 1987-11-18 | 1987-11-18 | 光学素子の製造方法 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01133948A (ko) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5275637A (en) * | 1990-01-31 | 1994-01-04 | Canon Kabushiki Kaisha | Method of manufacturing a glass optical part |
| JPH03228836A (ja) * | 1990-01-31 | 1991-10-09 | Canon Inc | ガラス光学部品の製造方法 |
| JP2579016B2 (ja) * | 1990-01-31 | 1997-02-05 | キヤノン株式会社 | ガラス光学部品の製造方法 |
| US5322541A (en) * | 1991-03-28 | 1994-06-21 | Matsushita Electric Industrial Co., Ltd. | Method of producing glass blank |
| MY158938A (en) | 2009-12-29 | 2016-11-30 | Hoya Corp | Manufacturing method of glass substrate for magnetic disk |
| SG177343A1 (en) | 2009-12-29 | 2012-02-28 | Hoya Corp | Glass substrate for magnetic disk and manufacturing method thereof |
| JP5431574B2 (ja) | 2010-03-31 | 2014-03-05 | Ｈｏｙａ株式会社 | ガラスブランク及び磁気ディスク用ガラス基板の製造方法 |
| JP2012160252A (ja) | 2011-01-31 | 2012-08-23 | Hoya Corp | 磁気ディスク用ガラス基板の製造方法 |
| US8844320B2 (en) * | 2011-03-31 | 2014-09-30 | Hoya Corporation | Manufacturing method of a sheet glass material for magnetic disk and manufacturing method of a glass substrate for magnetic disk |
| MY186189A (en) * | 2011-04-21 | 2021-06-30 | Hoya Corp | Method for manufacturing glass blank for magnetic disk, method for manufacturing glass substrate for magnetic disk, glass blank for magnetic disk, glass substrate for magnetic disk and magnetic disk |
| JP6000240B2 (ja) * | 2011-04-27 | 2016-09-28 | Hoya株式会社 | 磁気ディスク用ガラスブランクの製造方法、磁気ディスク用ガラス基板の製造方法、磁気ディスク用ガラスブランク |
| JP6138042B2 (ja) * | 2011-05-23 | 2017-05-31 | Hoya株式会社 | 磁気ディスク用ガラス基板の製造方法 |
-
1987
- 1987-11-18 JP JP29140987A patent/JPH01133948A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01133948A (ja) | 1989-05-26 |
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