JPS632825A - Method for cutting glass material - Google Patents
Method for cutting glass materialInfo
- Publication number
- JPS632825A JPS632825A JP14738886A JP14738886A JPS632825A JP S632825 A JPS632825 A JP S632825A JP 14738886 A JP14738886 A JP 14738886A JP 14738886 A JP14738886 A JP 14738886A JP S632825 A JPS632825 A JP S632825A
- Authority
- JP
- Japan
- Prior art keywords
- glass
- cut line
- cut
- sheet
- outside
- 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.)
- Granted
Links
- 239000011521 glass Substances 0.000 title claims abstract description 39
- 239000000463 material Substances 0.000 title claims abstract description 11
- 238000005520 cutting process Methods 0.000 title claims description 20
- 238000000034 method Methods 0.000 title claims description 9
- 239000005357 flat glass Substances 0.000 claims abstract description 23
- 238000001816 cooling Methods 0.000 claims abstract description 7
- 238000010438 heat treatment Methods 0.000 claims abstract description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 3
- 239000006061 abrasive grain Substances 0.000 description 2
- 238000003426 chemical strengthening reaction Methods 0.000 description 2
- 230000002542 deteriorative effect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000000750 progressive effect Effects 0.000 description 2
- 229910001415 sodium ion Inorganic materials 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 1
- 235000011089 carbon dioxide Nutrition 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 150000002500 ions Chemical group 0.000 description 1
- 230000001151 other effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B33/00—Severing cooled glass
- C03B33/02—Cutting or splitting sheet glass or ribbons; Apparatus or machines therefor
- C03B33/04—Cutting or splitting in curves, especially for making spectacle lenses
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B33/00—Severing cooled glass
- C03B33/09—Severing cooled glass by thermal shock
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は例えば光記録媒体用の基板として用いるガラス
素材（ガラスディスク）を板状ガラスから切断する方法
に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for cutting a glass material (glass disk) used as a substrate for, for example, an optical recording medium from a glass plate.
（従来の技術）
光記録媒体用の基板としてガラスディスクが使用されて
いる。このガラスディスクは板状ガラスを切断すること
によって得られ、この切断方法はダイヤモンド砥粒を使
用したカップホイールを用いて板状ガラスをディスクの
外周線及び円周線に沿って切断し、この切断面には進行
性のマイクロクラックが多数存在しているため、切断面
に微細砥粒による仕上げ加工を施し、この後面取り、化
学強化等を行うようにしている。(Prior Art) Glass disks are used as substrates for optical recording media. This glass disk is obtained by cutting plate glass, and this cutting method uses a cup wheel using diamond abrasive grains to cut the plate glass along the outer circumferential line and circumferential line of the disk. Since there are many progressive microcracks on the surface, the cut surface is finished with fine abrasive grains, and then chamfering, chemical strengthening, etc. are performed.
（発明が解決しようとする問題点）
上述した従来の切断方法にあっては、板状ガラスからデ
ィスク状ガラスを切断した後に、切断面のマイクロクラ
ックを除去するため、微細砥粒による仕上げ加工（２次
加工）を施さなければならず、工程数が多く生産効率に
劣る。また切断治具としてカップホイールを用いる場合
には、ガラスディスクの寸法変更に合せてそれぞれのサ
イズのカップホイールを用意しておけなければならない
という不都合もある。(Problems to be Solved by the Invention) In the conventional cutting method described above, after cutting the disk-shaped glass from the plate glass, finishing processing using fine abrasive particles ( (secondary processing), the number of steps is large and production efficiency is poor. Furthermore, when a cup wheel is used as a cutting jig, there is also the inconvenience that cup wheels of different sizes must be prepared in accordance with changes in the dimensions of the glass disk.
（問題点を解決するための手段）
上記問題点を解決すべく本発明は、例えば切断位置を任
意に設定できる超硬ホイール等を用いて、板状ガラスの
一面にガラス素材の形状に合せてカットラインを形成し
、このカットラインを形成した面に引っ張り応力を生じ
させてガラスの厚み方向のクラックを進展させ、次いで
カットラインの内側部分と外側部分に温度差を生ぜしめ
、内側部分と外側部分との膨脹差（収縮差）によって内
側部分と外側部分を分離するようにした。(Means for Solving the Problems) In order to solve the above problems, the present invention uses, for example, a carbide wheel whose cutting position can be arbitrarily set, to cut one surface of a sheet glass according to the shape of the glass material. A cut line is formed, a tensile stress is generated on the surface where the cut line is formed, a crack develops in the thickness direction of the glass, and then a temperature difference is created between the inner part and the outer part of the cut line, and the inner part and the outer part are The inner part and the outer part are separated by the difference in expansion (difference in contraction) between the two parts.
（作用）
カットラインの部分からガラスの厚み方向にクラックが
入った板状ガラスのカットラインよりも外側部分を加熱
するか、カットラインよりも内側部分を冷却するか、或
いはこれらを併用することで、内側部分と外側部分に互
いに離間する力が作用し、カー／ ）ラインの部分にガ
ラス厚み方向のクラックが入り、内側部分と外側部分が
分離する。(Function) By heating the part outside the cut line of a sheet glass with a crack in the thickness direction of the glass from the cut line part, cooling the part inside the cut line, or by using these in combination. , a force acts on the inner and outer parts to separate them from each other, a crack appears in the glass thickness direction at the Kerr/ ) line, and the inner and outer parts are separated.
（実施例） 以下に本発明の実施例を添付図面に基いて説明する。(Example) Embodiments of the present invention will be described below with reference to the accompanying drawings.
第１図は板状ガラスにカットラインを形成するカッティ
ング装置の側面図、第２図は同カッティング装置の平面
図であり、カッティング装置の構造から説明すると、カ
ッティング装置（１）は基台（２）の上面−側にスプリ
ング等を内蔵した昇降自在な支持部（３）を立設し、こ
の支持部（３）の上部に基台（２）の中央上方に伸びる
ステー（４）の基部を固着し、このステー（４）の先端
に軸受（５）を取付け、この軸受（５）に縦方向に軸（
８）を挿通し、軸受（５）から上方に突出した軸（８）
の上端には手動ハンドル（７）を固着し、軸受（５）か
ら下方に突出した軸（８）の下端にはアーム（８）の基
部を固着し、このアーム（８）に−対の保持具（８）を
アーム（８）に沿って位置可変となるように取付け、こ
れら保持具（８）には例えば刃角が１２５°、直径が３
ＩＩ１１程度の超硬ホイール（１０）を保持している。Fig. 1 is a side view of a cutting device that forms cut lines on sheet glass, and Fig. 2 is a plan view of the same cutting device. ) A support part (3) that can be raised and lowered with a built-in spring etc. is set up on the upper side of the base plate (2), and the base of a stay (4) extending upward from the center of the base (2) is attached to the top of this support part (3). A bearing (5) is attached to the tip of this stay (4), and a shaft (5) is attached vertically to this bearing (5).
8) and protrudes upward from the bearing (5).
A manual handle (7) is fixed to the upper end, and the base of an arm (8) is fixed to the lower end of a shaft (8) protruding downward from the bearing (5). Tools (8) are mounted so as to be variable in position along the arm (8), and these holders (8) have, for example, a blade angle of 125° and a diameter of 3.
It holds a carbide wheel (10) of about II11.
また、前記基台（２）の上面には真空引き装置につなが
る溝（図示せず）が形成され、基台（２）の所定位置に
は位置決めピン（１１）・・・を植設している。Further, a groove (not shown) connected to a vacuum device is formed on the upper surface of the base (2), and positioning pins (11) are implanted at predetermined positions on the base (2). There is.
次にガラス素材として光記録媒体用のガラスディスクを
切断する方法を以下に述べる。Next, a method of cutting a glass disk for an optical recording medium as a glass material will be described below.
先ず、第１図及び第２図に示すようにカッティング装置
（１）の基台（２）上面に板状ガラスＣＧ）を位置決め
セットし、基台（２）上面に板状ガラスＣＧ）を吸引固
定する。この場合超硬ホイール（１０）を保持した保持
具（９）、（９）の位置はガラスディスクの寸法に合せ
てアーム（８）に固定しておく。First, as shown in Figures 1 and 2, the plate glass CG) is positioned and set on the top surface of the base (2) of the cutting device (1), and the plate glass CG) is sucked onto the top surface of the base (2). Fix it. In this case, the positions of the holders (9), (9) holding the carbide wheel (10) are fixed to the arm (8) in accordance with the dimensions of the glass disk.
次いでハンドル（７）を下方に押し、超硬ホイール（１
０）を板状ガラス（Ｇ）表面に押し付け（５００ｇ程度
の接触圧とする）、ハンドル（７）を回すことで、第３
図及び第３図のＡ−Ａ線拡大断面図である第４図に示す
ように板状ガラスＣＧ）の表面に円形のカットライン（
１２）、（１３）を形成する。Next, push the handle (7) downward and turn the carbide wheel (1
0) on the surface of the plate glass (G) (with a contact pressure of about 500 g), and by turning the handle (7), the third
As shown in FIG. 4, which is an enlarged cross-sectional view taken along line A-A in FIG.
12) and (13) are formed.
この後、第５図に示す如く、カットライン（１２）、（
１３）を形成した板状ガラス（Ｇ）の表面をシートヒー
タ（１４）に当て、当該表面を加熱する。すると、カッ
トライン（１２） 、（１３）を形成した面側か熱膨脹
し、板状ガラス（Ｇ）は第５図の矢印で示すように上方
に反り返る。この結果、カットライン（１２）、（１３
）の部分に引っ張り応力が作用し、第６図に示すように
カットライン（１２）、（１３）の部分から板状ガラス
（Ｇ）の厚み方向にニューと称するクラック（１５）が
入る。After this, as shown in FIG. 5, cut lines (12), (
The surface of the sheet glass (G) on which 13) was formed is applied to a sheet heater (14) to heat the surface. Then, the side on which the cut lines (12) and (13) are formed undergoes thermal expansion, and the plate glass (G) is warped upward as shown by the arrow in FIG. As a result, cut lines (12), (13
), and as shown in FIG. 6, cracks (15) called new appear in the thickness direction of the sheet glass (G) from the cut lines (12) and (13).
次いで第７図に示すように、板状ガラス（Ｇ）のカット
ライン（１２）よりも外側部分（１Ｂ）の上下両面をシ
ートヒータ（１７） 、（１７）で挟持し、外側部分（
１Ｂ）を加熱する。すると、外側部分（ＩＢ）は熱膨脹
し、第８図に示すようにカットライン（１２）を境いに
して内側部分（１８）から分離する。Next, as shown in FIG. 7, upper and lower surfaces of the portion (1B) outside the cut line (12) of the sheet glass (G) are held between sheet heaters (17), (17), and the outside portion (1B) is held between sheet heaters (17).
1B). Then, the outer portion (IB) thermally expands and separates from the inner portion (18) across the cut line (12) as shown in FIG.
この後、第９図に示すように外側部分（１Ｂ）が除かれ
た円板状ガラスのカットライン（１３）よりも外側部分
（１９） （この外側部分（１９）は前記内側部分（１
８）の−部である）の上下両面をシートヒータ（２Ｇ）
、（２０）にて挟持して加熱し、内側部分（２１）に液
体窒素等が入った。冷却容器（２２）を押し当てて冷却
する。すると、第１０図に示すように外側部分（１９）
は加熱によって膨脹し、内側部分（２１）は冷却によっ
て収縮するため、カットライン（１３）を境いとして外
側部分（１８）と内側部分（２りが分離し、目的とする
円環状のガラスディスクが得られる。After this, as shown in FIG. 9, a portion (19) outside the cut line (13) of the disk-shaped glass from which the outside portion (1B) has been removed (this outside portion (19) is
8) The upper and lower surfaces of the
, (20) and heated, and liquid nitrogen etc. entered the inner part (21). Cool by pressing the cooling container (22) against it. Then, as shown in Fig. 10, the outer part (19)
expands when heated, and the inner part (21) contracts when cooled, so the outer part (18) and the inner part (2) are separated at the cut line (13), and the desired annular glass disk is formed. is obtained.
このようにして得られたガラスディスクの切断面（エツ
ジ部）には進行性のクラックは殆んど存在せず、したが
って仕上げ加工を施すことなく次工程に送られる。There are almost no progressive cracks on the cut surface (edge portion) of the glass disk thus obtained, and therefore it is sent to the next process without being subjected to finishing.
次工程としては化学強化を施す、この化学強化としては
、カリウム塩の溶融液中にガラスディスクを浸漬し、ガ
ラスディスク表面のＮａイオンとにイオンとを置換せし
める。The next step is chemical strengthening, in which the glass disk is immersed in a molten solution of potassium salt, and Na ions on the surface of the glass disk are replaced with ions.
このようにすることで、ガラスディスク表面に形成する
Ｔｅ、ＧａＦｅ等からなる記録層がＮａイオンの影響に
よって劣化すること及びガラスディスク表面の透明度が
経時的に悪化することが防止される。This prevents the recording layer formed on the glass disk surface from deteriorating due to the influence of Na ions and prevents the transparency of the glass disk surface from deteriorating over time.
尚、実施例にあっては、カットライン（１２）、（１３
）を形成した面を加熱し、板状ガラス（Ｇ）の厚み方向
にクラック（１５）を入れ、後の工程で分離しやすくし
たが、クラック（１５）を入れるためには、板状ガラス
（Ｇ）を機械的に反り返すようにしてもよい。In addition, in the example, cut lines (12) and (13
) was heated to make a crack (15) in the thickness direction of the sheet glass (G) to facilitate separation in a later step. G) may be mechanically bent.
また、実施例にあっては加熱装置としてシートヒータを
、冷却装置として液体窒素を封入した容器を用いたが、
熱風又はガス等による加熱、ドライアイスによる冷却等
その手段は任意である。In addition, in the examples, a seat heater was used as the heating device, and a container filled with liquid nitrogen was used as the cooling device.
Any means may be used, such as heating with hot air or gas, cooling with dry ice, etc.
更に実施例にあってはガラス素材としてガラスディスク
を例にとったが、これに限らないのは勿論である。Further, in the embodiments, a glass disk is used as an example of the glass material, but it is of course not limited to this.
（発明の効果）
以上説明した如く本発明によれば、いったん切断した後
に仕上げ加工を施す必要がなくなるので、生産効率が大
巾に向上する。具体的にはガラスディスクの場合には１
枚のガラスディスクの装置に従来は約１分間要していた
が、本発明方法によれば２０秒に短縮できた。(Effects of the Invention) As explained above, according to the present invention, there is no need to perform finishing processing after cutting, so production efficiency is greatly improved. Specifically, in the case of a glass disk, 1
Conventionally, it took about 1 minute for an apparatus using a single glass disk, but according to the method of the present invention, the time can be shortened to 20 seconds.
更に実施例に示したようなカッティング装置を用いれば
、ガラス素材の寸法変更に簡単に対応でき、精度良く切
断できる等多くの効果を発揮する。Furthermore, if a cutting device such as that shown in the embodiment is used, it can easily respond to changes in the dimensions of the glass material, can cut with high precision, and exhibit many other effects.
第１図はカッティング装置の側面図、第２図はカッティ
ング装置の平面図、第３図は板状ガラスの平面図、第４
図は第３図のＡ−Ａ線拡大断面図、第５図は板状ガラス
の一面をシートヒータに当接された状態の断面図、第６
図はクラックが入った状態の板状ガラスの断面図、第７
図は板状ガラスの外側部分を加熱している状態を示す図
、第８図は外側部分と内側部分が分離した状態の断面図
、第９図は板状ガラスの外側部分を加熱し。
内側部分を冷却している状態を示す図、第１０図は外側
部分と内側部分が分離した状態を示す断面図である。
尚、図面中（１）はカッティング装置、（！０）は超硬
ホイール、（１２）、（１３）はカットライン、 （１
４）、（１７） 、（２０）はシートヒータ、 （１Ｂ
）、（１９）は外側部分、（１８）、（２１）は内側部
分、（Ｇ）は板状ガラスである。
特 許 出 願 人 日本板硝子株式会社代 理 人
弁理士 下 １） 容−部間 弁理
士 大 橋 邦 部同 弁理士
小 山 部同 弁理士 野
１） 茂第１図
第２図
第７図
第８図
ｚ
第９図
第１０図Fig. 1 is a side view of the cutting device, Fig. 2 is a plan view of the cutting device, Fig. 3 is a plan view of the sheet glass, and Fig. 4 is a plan view of the cutting device.
The figure is an enlarged cross-sectional view taken along the line A-A in Figure 3, Figure 5 is a cross-sectional view of one side of the sheet glass in contact with the sheet heater, and Figure 6
The figure is a cross-sectional view of sheet glass with cracks, No. 7
The figure shows a state in which the outer part of the plate glass is heated, FIG. 8 is a sectional view with the outer part and the inner part separated, and FIG. 9 shows the outer part of the plate glass being heated. FIG. 10 is a cross-sectional view showing a state in which the inner part is cooled and the outer part and the inner part are separated. In the drawing, (1) is the cutting device, (!0) is the carbide wheel, (12) and (13) are the cut lines, (1
4), (17), (20) are seat heaters, (1B
) and (19) are the outer parts, (18) and (21) are the inner parts, and (G) is the plate glass. Patent applicant: Agent of Nippon Sheet Glass Co., Ltd.
Patent Attorney Part 2 1) Patent Attorney, Kuni Ohashi, Patent Attorney, Department
1) Shigeru Koyama, Patent Attorney, Figure 1, Figure 2, Figure 7, Figure 8z, Figure 9, Figure 10
Claims (2)
てカットラインを成形し、カットラインを形成した面に
引っ張り応力が生じる方向に板状ガラスを反り返えらせ
、カットラインからガラスの厚み方向にクラックを生じ
させ、次いでカットラインよりも外側部分を加熱して外
側部分を膨脹せしめるか、カットラインよりも内側部分
を冷却して内側部分を収縮せしめることで外側部分と内
側部分とを分離せしめるようにしたことを特徴とするガ
ラス素材の切断方法。(1) Form a cut line on one side of the glass plate according to the outline of the glass material, then bend the glass plate in the direction where tensile stress is generated on the surface where the cut line was formed, and remove the glass from the cut line. A crack is generated in the thickness direction, and then the outer part and the inner part are separated by heating the part outside the cut line so that the outside part expands, or by cooling the part inside the cut line and contracting the inside part. A method for cutting a glass material, characterized by separating the glass material.
熱することを特徴とする特許請求の範囲第１項又は第２
項のいずれかに記載のガラス素材の切断方法。(2) The outer portion of the sheet glass is heated by a sheet heater, as claimed in claim 1 or 2.
A method for cutting a glass material as described in any of the above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14738886A JPS632825A (en) | 1986-06-24 | 1986-06-24 | Method for cutting glass material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14738886A JPS632825A (en) | 1986-06-24 | 1986-06-24 | Method for cutting glass material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS632825A true JPS632825A (en) | 1988-01-07 |
| JPH0535095B2 JPH0535095B2 (en) | 1993-05-25 |
Family
ID=15429131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14738886A Granted JPS632825A (en) | 1986-06-24 | 1986-06-24 | Method for cutting glass material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS632825A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02204337A (en) * | 1989-01-31 | 1990-08-14 | Ichikoh Ind Ltd | Method and device for shaping plate glass |
| JPH02102437U (en) * | 1989-01-31 | 1990-08-15 | ||
| JPH02102439U (en) * | 1989-01-31 | 1990-08-15 | ||
| JPH02102438U (en) * | 1989-01-31 | 1990-08-15 | ||
| JP2002308637A (en) * | 2001-04-04 | 2002-10-23 | Sony Corp | Method and apparatus for manufacturing glass substrate |
| JP2004501052A (en) * | 2000-06-21 | 2004-01-15 | カール−ツァイス−スティフツング | Method of manufacturing glass sheet of arbitrary contour from flat glass |
| JP2007119336A (en) * | 2005-09-30 | 2007-05-17 | Hoya Glass Disk Thailand Ltd | Method of manufacturing glass substrate for magnetic disk and method of manufacturing magnetic disk |
| JP2007126322A (en) * | 2005-11-02 | 2007-05-24 | Citizen Seimitsu Co Ltd | Rotary cutter head, scribing device equipped with the same, scribing method using the same and brittle material component formed by the method |
| JP2009190905A (en) * | 2008-02-12 | 2009-08-27 | Mitsuboshi Diamond Industrial Co Ltd | System and method for processing brittle material annular processed goods |
| JP2010080016A (en) * | 2008-09-27 | 2010-04-08 | Hoya Corp | Method of manufacturing glass substrate for magnetic disk, and method of manufacturing magnetic disk |
| JP2012254927A (en) * | 2012-07-27 | 2012-12-27 | Mitsuboshi Diamond Industrial Co Ltd | Substrate processing apparatus |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5244816A (en) * | 1975-08-01 | 1977-04-08 | Saint Gobain | Process and apparatus for cutting border from glass sheet |
| JPS5327731A (en) * | 1976-08-27 | 1978-03-15 | Yamaha Motor Co Ltd | Fuel injection control system of 2 stroke engine |
| JPS58115035A (en) * | 1981-12-25 | 1983-07-08 | Nippon Sheet Glass Co Ltd | Cutting method of plate glass |
-
1986
- 1986-06-24 JP JP14738886A patent/JPS632825A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5244816A (en) * | 1975-08-01 | 1977-04-08 | Saint Gobain | Process and apparatus for cutting border from glass sheet |
| JPS5327731A (en) * | 1976-08-27 | 1978-03-15 | Yamaha Motor Co Ltd | Fuel injection control system of 2 stroke engine |
| JPS58115035A (en) * | 1981-12-25 | 1983-07-08 | Nippon Sheet Glass Co Ltd | Cutting method of plate glass |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02204337A (en) * | 1989-01-31 | 1990-08-14 | Ichikoh Ind Ltd | Method and device for shaping plate glass |
| JPH02102437U (en) * | 1989-01-31 | 1990-08-15 | ||
| JPH02102439U (en) * | 1989-01-31 | 1990-08-15 | ||
| JPH02102438U (en) * | 1989-01-31 | 1990-08-15 | ||
| JP2004501052A (en) * | 2000-06-21 | 2004-01-15 | カール−ツァイス−スティフツング | Method of manufacturing glass sheet of arbitrary contour from flat glass |
| JP2002308637A (en) * | 2001-04-04 | 2002-10-23 | Sony Corp | Method and apparatus for manufacturing glass substrate |
| JP4631196B2 (en) * | 2001-04-04 | 2011-02-16 | ソニー株式会社 | Glass substrate manufacturing method and glass substrate manufacturing apparatus |
| JP2007119336A (en) * | 2005-09-30 | 2007-05-17 | Hoya Glass Disk Thailand Ltd | Method of manufacturing glass substrate for magnetic disk and method of manufacturing magnetic disk |
| JP2007126322A (en) * | 2005-11-02 | 2007-05-24 | Citizen Seimitsu Co Ltd | Rotary cutter head, scribing device equipped with the same, scribing method using the same and brittle material component formed by the method |
| JP2009190905A (en) * | 2008-02-12 | 2009-08-27 | Mitsuboshi Diamond Industrial Co Ltd | System and method for processing brittle material annular processed goods |
| JP2010080016A (en) * | 2008-09-27 | 2010-04-08 | Hoya Corp | Method of manufacturing glass substrate for magnetic disk, and method of manufacturing magnetic disk |
| JP2012254927A (en) * | 2012-07-27 | 2012-12-27 | Mitsuboshi Diamond Industrial Co Ltd | Substrate processing apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0535095B2 (en) | 1993-05-25 |
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