JPH07223828A - Method for cutting glass plate - Google Patents

Method for cutting glass plate

Info

Publication number
JPH07223828A
JPH07223828A JP1755594A JP1755594A JPH07223828A JP H07223828 A JPH07223828 A JP H07223828A JP 1755594 A JP1755594 A JP 1755594A JP 1755594 A JP1755594 A JP 1755594A JP H07223828 A JPH07223828 A JP H07223828A
Authority
JP
Japan
Prior art keywords
glass plate
cutter
cutting
cut
closed curve
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
Application number
JP1755594A
Other languages
Japanese (ja)
Other versions
JP2785906B2 (en
Inventor
Kensuke Matsuno
賢介 松野
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Sheet Glass Co Ltd
Original Assignee
Nippon Sheet Glass Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nippon Sheet Glass Co Ltd filed Critical Nippon Sheet Glass Co Ltd
Priority to JP6017555A priority Critical patent/JP2785906B2/en
Publication of JPH07223828A publication Critical patent/JPH07223828A/en
Application granted granted Critical
Publication of JP2785906B2 publication Critical patent/JP2785906B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B33/00—Severing cooled glass
    • C03B33/10—Glass-cutting tools, e.g. scoring tools
    • C03B33/105—Details of cutting or scoring means, e.g. tips
    • C03B33/107—Wheel design, e.g. materials, construction, shape
    • 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

PURPOSE:To simply cut a part enclosed by closed curve from a glass plate. CONSTITUTION:Slantingly cut line 3 is formed on one face side of a glass plate by a diamond disc saw 2 and then, the outside in the region enclosed by a cut line 3 is heated. Thereby, the glass plate 1 is deformed by difference of thermal expansion generated in the thickness direction of the glass plate 1. Then, the slantingly cut line 3 instantaneously reaches side face opposite to the heating face by this deformation.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は磁気ディスクや光ディス
ク用のガラス基板をガラス板から切り抜く方法に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for cutting a glass substrate for a magnetic disk or an optical disk from a glass plate.

【０００２】[0002]

【従来の技術】ディスク用ガラス基板をガラス板から切
断する方法として特開平２−９２８３７号公報に開示さ
れる方法が知られている。この方法の概略は先ず図７
（ａ）に示すようにガラス板１００にカッターによって
切筋１０１を閉曲線を描くように形成し、次いで切筋１
０１を付けた面を加熱してガラス板１００を変形させ、
この変形によって切筋１０１をガラス板の反対面まで進
行させ、この後ドライアイス等によって閉曲線で囲まれ
る内側部分１０２を冷却して収縮させ、当該内側部分を
切り抜き、更に同様の方法で内側部分１０２に穴を形成
しドーナツ状のガラス基板１０３を得るようにしたもの
である。2. Description of the Related Art As a method for cutting a glass substrate for a disk from a glass plate, a method disclosed in Japanese Patent Laid-Open No. 2-92837 is known. The outline of this method is first shown in FIG.
As shown in (a), a cut line 101 is formed on the glass plate 100 by a cutter so as to draw a closed curve, and then the cut line 1 is formed.
The surface marked with 01 is heated to deform the glass plate 100,
By this deformation, the cut line 101 is advanced to the opposite surface of the glass plate, and then the inner portion 102 surrounded by the closed curve is cooled and contracted by dry ice or the like, the inner portion is cut out, and the inner portion 102 is further cut by the same method. The glass substrate 103 having a donut shape is obtained by forming a hole in the glass substrate.

【０００３】[0003]

【発明が解決しようとする課題】上述した従来の切断方
法にあっては、カッターによって付ける切筋はガラス板
に対して直交する方向である。このため、切筋が対向面
に達した状態でも閉曲線で囲まれる内側部分を抜き取る
ために、閉曲線の内側部分と外側部分とで温度差をつけ
る必要があり、このための操作つまりドライアイス等で
冷却する工程及び特別な治具が不可欠となる。In the above-mentioned conventional cutting method, the cutting line provided by the cutter is in a direction orthogonal to the glass plate. For this reason, it is necessary to make a temperature difference between the inner part and the outer part of the closed curve in order to extract the inner part surrounded by the closed curve even when the cut muscle reaches the facing surface. A cooling process and a special jig are indispensable.

【０００４】[0004]

【課題を解決するための手段】上記課題を解決するため
本発明は、ガラス板の一面側にカッターによってガラス
板の厚み方向に対して傾斜した切筋を閉曲線を描くよう
に形成し、次いでこの切筋をつけた面を加熱することに
よりガラス板を変形させ、この変形によって前記傾斜し
た切筋をガラス板の厚み方向に進行させて対向面まで到
達させ、この後閉曲線で囲まれる部分を分離するように
した。ここで、前記加熱する部分は切筋をつけた面であ
って、且つ閉曲線よりも外側の部分とすることが好まし
い。In order to solve the above-mentioned problems, the present invention forms a closed curve on one surface side of a glass plate by a cutter so as to draw a closed curve, and then forms a closed curve. The glass plate is deformed by heating the surface with the cut line, and by this deformation, the inclined cut line advances in the thickness direction of the glass plate to reach the opposing surface, and then the part surrounded by the closed curve is separated. I decided to do it. Here, it is preferable that the portion to be heated is a surface having a cut line and is located outside the closed curve.

【０００５】また、前記傾斜した切筋を形成する具体的
な方法としては、カッター稜線に対して左右の刃角が異
なるカッターを用いる場合には、このカッターの稜線を
ガラス板面に対して垂直に立てた状態で相対的に移動せ
しめるようにし、カッター稜線に対して左右の刃角が同
一のカッターを用いる場合には、このカッターの稜線を
ガラス板面に対して傾斜させた状態で相対的に移動せし
めるようにする。As a specific method of forming the inclined cut line, when a cutter having different left and right blade angles with respect to the cutter ridge line is used, the ridge line of the cutter is perpendicular to the glass plate surface. When using a cutter that has the same left and right blade angles with respect to the cutter ridgeline, make sure that the ridgeline of this cutter is inclined with respect to the glass plate surface. To be able to move to.

【０００６】[0006]

【作用】ガラス板の厚み方向に形成される切筋が斜めと
なるので、切筋が対向面まで達することで、切断部分の
抜き勾配が形成される。Since the cut lines formed in the thickness direction of the glass plate are inclined, the draft of the cut portion is formed when the cut lines reach the facing surface.

【０００７】[0007]

【実施例】以下に本発明の実施例を添付図面に基づいて
説明する。ここで、図１はガラス板に切筋を付けている
状態の断面図、図２は図１に示したカッターの拡大図、
図３は図２に示すカッターの左右の刃角差と切筋の傾き
との関係を示すグラフであり、実施例としては磁気記録
媒体用のガラス基板をガラス板から切断する例を説明す
る。Embodiments of the present invention will be described below with reference to the accompanying drawings. Here, FIG. 1 is a cross-sectional view of a glass plate with a cut line, and FIG. 2 is an enlarged view of the cutter shown in FIG.
FIG. 3 is a graph showing the relationship between the difference between the right and left blade angles of the cutter shown in FIG. 2 and the inclination of the cut line. As an example, an example of cutting a glass substrate for a magnetic recording medium from the glass plate will be described.

【０００８】本発明にあっては先ず図１に示すように、
四角形状をしたガラス板１の一面側にカッターとしての
ダイヤモンドディスクソー２により切筋３を形成する。
このダイヤモンドディスクソー２は図２に示すように稜
線４の左右に刃部５，６が形成され、各刃部５，６の角
度θ1，θ2が異なっている。このように刃部の角度が異
なるダイヤモンドディスクソー２の稜線４をガラス板１
の表面に対して垂直にした状態でダイヤモンドディスク
ソー２をガラス板１の表面に沿って円を描くように移動
させるか、ダイヤモンドディスクソー２の位置を固定と
しガラス板１を回転させることでガラス板１の表面に傾
めの切筋３が円形を描く用に形成される。In the present invention, first, as shown in FIG.
Cut lines 3 are formed on one surface side of a rectangular glass plate 1 by a diamond disc saw 2 as a cutter.
As shown in FIG. 2, the diamond disc saw 2 has blade portions 5 and 6 formed on the right and left sides of the ridge line 4, and the blade portions 5 and 6 have different angles θ 1 and θ 2 . In this way, the ridge line 4 of the diamond disc saw 2 having different blade angles is attached to the glass plate 1
By moving the diamond disc saw 2 in a circle along the surface of the glass plate 1 in a state of being perpendicular to the surface of the glass plate 1, or by rotating the glass plate 1 with the position of the diamond disc saw 2 fixed. An inclined cut line 3 is formed on the surface of the plate 1 so as to draw a circle.

【０００９】図３は刃部５，６の角度θ1，θ2の差（θ
2−θ1）と切筋３の傾き角（α）との関係を示すグラフ
であり、このグラフから切筋３は小さな角度（θ1）の
方に傾き、更にその傾き角（α）は左右の刃部５，６の
角度差（θ2−θ1）に略比例することが分る。FIG. 3 shows the difference between the angles θ 1 and θ 2 of the blades 5 and 6 (θ
2− θ 1 ) and the inclination angle (α) of the cut muscle 3, from which the cut muscle 3 is inclined toward a smaller angle (θ 1 ) and the inclination angle (α) is It can be seen that it is approximately proportional to the angular difference (θ 2 −θ 1 ) between the left and right blades 5, 6.

【００１０】また、傾斜した切筋を形成するには刃部
５，６の角度が等しいダイヤモンドディスクソー２を用
いることもできる。この場合には図４に示すようにダイ
ヤモンドディスクソー２の稜線４をガラス板１の表面に
対して傾けた状態で切筋３を形成する。Further, the diamond disc saw 2 in which the angles of the blade portions 5 and 6 are equal to each other can be used to form the inclined cut lines. In this case, as shown in FIG. 4, the ridge line 4 of the diamond disc saw 2 is inclined with respect to the surface of the glass plate 1 to form the cut lines 3.

【００１１】以上の如くして斜めの切筋３を形成したな
らば、図５に示すようにガラス板１を支持台７上に載置
し、加熱部材８によって切筋３を形成した面でしかも切
筋３によって囲まれる領域の外側を加熱する。After the diagonal cut lines 3 are formed as described above, the glass plate 1 is placed on the support base 7 as shown in FIG. Moreover, the outside of the area surrounded by the cut lines 3 is heated.

【００１２】このように切筋３を形成した面を加熱する
ことで、ガラス板１の厚み方向に熱膨張差が生じ、ガラ
ス板１が図において上方に凸形状となるように変形す
る。そして、この変形によって切筋３がガラス板１の加
熱面と反対側面まで瞬間的に達する。尚、実施例にあっ
ては切筋３によって囲まれる領域の外側１ａを加熱する
ことで、切筋３のガラス板厚み方向の進行が確実になさ
れるようにしたが、切筋３を形成した面を全面的に加熱
するようにしてもよい。By heating the surface on which the cut lines 3 are formed in this manner, a difference in thermal expansion occurs in the thickness direction of the glass plate 1, and the glass plate 1 is deformed so as to be convex upward in the drawing. Due to this deformation, the cut lines 3 instantaneously reach the side opposite to the heating surface of the glass plate 1. In the example, the outer side 1a of the region surrounded by the cut line 3 was heated to ensure the advance of the cut line 3 in the thickness direction of the glass plate, but the cut line 3 was formed. The entire surface may be heated.

【００１３】この後図６に示すように、押し棒９によっ
て切筋３によって囲まれる領域の内側１ｂを押すことで
円形に切り抜き、次いで、この円形に切り抜いたガラス
板の中央に同様の方法で穴を形成することでドーナツ状
のガラス基板が得られる。Thereafter, as shown in FIG. 6, a push rod 9 pushes the inner side 1b of the region surrounded by the cut lines 3 to cut out a circular shape, and then the center of the circularly cut glass plate is cut in the same manner. A donut-shaped glass substrate can be obtained by forming the holes.

【００１４】尚、実施例としては円形若しくはドーナツ
状をなすガラス基板を切り抜く例を示したが、切り抜く
形状としては円形等に限らず、楕円、角形等閉曲線で囲
まれる形状であればよい。Although an example in which a glass substrate having a circular shape or a donut shape is cut out has been shown as an example, the shape to be cut out is not limited to a circular shape and may be any shape enclosed by a closed curve such as an ellipse or a square.

【００１５】[0015]

【発明の効果】以上に説明したように本発明によれば、
ガラス板の一面側にカッターによってガラス板の厚み方
向に対して傾斜した切筋を閉曲線を描くように形成し、
次いでこの切筋をつけた面を加熱することによりガラス
板を変形させ、この変形によって前記傾斜した切筋をガ
ラス板の厚み方向に進行させて対向面まで到達させるよ
うにしたので、この状態で閉曲線で囲まれる部分に抜き
勾配が形成され、したがって従来のような冷却を行うこ
となく閉曲線で囲まれる部分を分離することができる。As described above, according to the present invention,
A cutting line inclined with respect to the thickness direction of the glass plate is formed on the one surface side of the glass plate by a cutter so as to draw a closed curve,
Then, the glass plate is deformed by heating the surface with the cut line, and the deformation causes the inclined cut line to advance in the thickness direction of the glass plate to reach the facing surface. A draft is formed in the portion surrounded by the closed curve, so that the portion surrounded by the closed curve can be separated without performing cooling as in the conventional case.

【００１６】特に、前記加熱する部分は切筋をつけた面
であって、且つ閉曲線よりも外側の部分とすることで、
傾斜した切筋をガラス板の対向面まで簡単に到達させる
ことができる。In particular, the heating portion is a surface having cut lines and is an outer portion of the closed curve,
The inclined cut lines can easily reach the facing surface of the glass plate.

【００１７】また、カッター稜線に対して左右の刃角が
異なるカッターを用い、このカッターの稜線をガラス板
面に対して垂直に立てた状態で相対的に移動せしめる
か、カッター稜線に対して左右の刃角が同一のカッター
を用い、このカッターの稜線をガラス板面に対して傾斜
させた状態で相対的に移動せしめることで、傾斜した切
筋を簡単に形成することができる。Further, a cutter having different left and right blade angles with respect to the cutter ridgeline is used, and the ridgeline of this cutter is moved relative to the glass plate surface in a state of standing upright with respect to the cutter ridgeline. By using a cutter with the same blade angle and moving the ridge line of the cutter relative to the surface of the glass plate relative to each other, it is possible to easily form the inclined cut line.

【図面の簡単な説明】[Brief description of drawings]

【図１】ガラス板に切筋を付けている状態の断面図FIG. 1 is a cross-sectional view showing a state where a glass plate has a score line.

【図２】図１に示したカッターの拡大図2 is an enlarged view of the cutter shown in FIG.

【図３】図２に示すカッターの左右の刃角差と切筋の傾
きとの関係を示すグラフFIG. 3 is a graph showing the relationship between the difference between the right and left blade angles of the cutter shown in FIG. 2 and the inclination of the cut line.

【図４】ガラス板に切筋を付ける別実施例を示す断面図FIG. 4 is a cross-sectional view showing another embodiment in which a glass plate is scored.

【図５】ガラス板を加熱している状態を示す図FIG. 5 is a diagram showing a state where a glass plate is heated.

【図６】閉曲線をなす切筋によって囲まれた部分を切り
抜いた状態を示す図FIG. 6 is a diagram showing a state in which a portion surrounded by a cut line forming a closed curve is cut out.

【図７】（ａ）〜（ｃ）はガラス板から記録媒体用のガ
ラス基板を切断するまでの工程を示す図7A to 7C are diagrams showing steps from cutting a glass substrate for a recording medium to a glass plate.

【符号の説明】[Explanation of symbols]

１…ガラス板、２…ダイヤモンドディスクソー、３…切
筋、４…稜線、５，６…刃部、８…加熱部材、９…押し
棒。DESCRIPTION OF SYMBOLS 1 ... Glass plate, 2 ... Diamond disc saw, 3 ... Cut line, 4 ... Ridge line, 5, 6 ... Blade part, 8 ... Heating member, 9 ... Push rod.

Claims (4)

【特許請求の範囲】[Claims] 【請求項１】 ガラス板の一面側にカッターによってガ
ラス板の厚み方向に対して傾斜した切筋を閉曲線を描く
ように形成し、次いでこの切筋をつけた面を加熱するこ
とによりガラス板を変形させ、この変形によって前記傾
斜した切筋をガラス板の厚み方向に進行させて対向面ま
で到達させ、この後閉曲線で囲まれる部分を分離するよ
うにしたことを特徴とするガラス板の切断方法。1. A glass plate is formed on one side of a glass plate with a cutter so as to draw a closed curve that is inclined with respect to the thickness direction of the glass plate so as to draw a closed curve, and then the surface having the cut line is heated to form the glass plate. A method of cutting a glass plate, characterized in that the glass plate is deformed, and the inclined cutting line is advanced in the thickness direction of the glass plate by this deformation to reach the facing surface, and then the portion surrounded by the closed curve is separated. . 【請求項２】 請求項１に記載のガラス板の切断方法に
おいて、前記加熱する部分は切筋をつけた面であって、
且つ閉曲線よりも外側の部分としたことを特徴とするガ
ラス板の切断方法。2. The method for cutting a glass plate according to claim 1, wherein the portion to be heated is a surface having cut lines,
A method for cutting a glass plate is characterized in that the portion outside the closed curve is formed. 【請求項３】 請求項１または２に記載のガラス板の切
断方法において、前記傾斜した切筋はカッター稜線に対
して左右の刃角が異なるカッターを用い、このカッター
の稜線をガラス板面に対して垂直に立てた状態で相対的
に移動せしめることで形成するようにしたことを特徴と
するガラス板の切断方法。3. The method for cutting a glass sheet according to claim 1, wherein the inclined cut lines are cutters having different left and right blade angles with respect to the cutter ridge line, and the ridge line of the cutter is formed on the glass plate surface. A method for cutting a glass plate is characterized in that the glass plate is formed by moving the glass plate in a vertically standing state relative to it. 【請求項４】 請求項１または２に記載のガラス板の切
断方法において、前記傾斜した切筋はカッター稜線に対
して左右の刃角が同一のカッターを用い、このカッター
の稜線をガラス板面に対して傾斜させた状態で相対的に
移動せしめることで形成するようにしたことを特徴とす
るガラス板の切断方法。4. The method for cutting a glass plate according to claim 1, wherein the inclined cut line is a cutter having the same left and right blade angles with respect to the cutter ridge line, and the ridge line of the cutter is a glass plate surface. A method for cutting a glass plate, characterized in that the glass plate is formed by moving the glass plate while being inclined with respect to the glass plate.
JP6017555A 1994-02-14 1994-02-14 Glass plate cutting method Expired - Lifetime JP2785906B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6017555A JP2785906B2 (en) 1994-02-14 1994-02-14 Glass plate cutting method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6017555A JP2785906B2 (en) 1994-02-14 1994-02-14 Glass plate cutting method

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP8096343A Division JP2973354B2 (en) 1996-04-18 1996-04-18 Glass substrate for disk

Publications (2)

Publication Number Publication Date
JPH07223828A true JPH07223828A (en) 1995-08-22
JP2785906B2 JP2785906B2 (en) 1998-08-13

Family

ID=11947167

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6017555A Expired - Lifetime JP2785906B2 (en) 1994-02-14 1994-02-14 Glass plate cutting method

Country Status (1)

Country Link
JP (1) JP2785906B2 (en)

Cited By (25)

* Cited by examiner, † Cited by third party
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JP2001002437A (en) * 1999-06-15 2001-01-09 Mitsuboshi Diamond Industrial Co Ltd Breaking device
JP2002060235A (en) * 2000-08-18 2002-02-26 Nippon Sheet Glass Co Ltd Method for cutting glass plate and glass disk for recording medium
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US20110107894A1 (en) * 2008-05-30 2011-05-12 Mitsuboshi Diamond Industrial Co., Ltd Brittle Material Substrate Chamfering Method
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US20120213921A1 (en) * 2006-03-24 2012-08-23 Hoya Glass Disk Philippines, Inc. Method for producing glass substrate for magnetic disk and method for producing magnetic disk
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JP2015086133A (en) * 2015-01-28 2015-05-07 坂東機工株式会社 Scribe device of glass plate
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JP2015120251A (en) * 2013-12-20 2015-07-02 三星ダイヤモンド工業株式会社 Scribing wheel for forming hollow hole, and method for forming hollow hole
JP2015160802A (en) * 2014-04-18 2015-09-07 坂東機工株式会社 Method and apparatus for processing glass plate
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KR20170013157A (en) 2015-07-27 2017-02-06 미쓰보시 다이야몬도 고교 가부시키가이샤 Method for forming vertical crack in brittle material substrate and method for dividing brittle material substrate
JP2017047546A (en) * 2015-08-31 2017-03-09 三星ダイヤモンド工業株式会社 Method for formation of inclination crack in brittle material substrate and method for segmentation of brittle material substrate
JP2018015989A (en) * 2016-07-28 2018-02-01 三星ダイヤモンド工業株式会社 Method for dividing brittle substrate
WO2018068398A1 (en) * 2016-10-10 2018-04-19 华南理工大学 Method for micro-grinding tip-accurately induced brittle fracture forming of curved mirror surface
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KR100627940B1 (en) * 1999-01-28 2006-09-22 미쓰보시 다이야몬도 고교 가부시키가이샤 Glass cutter wheel
JP2001002437A (en) * 1999-06-15 2001-01-09 Mitsuboshi Diamond Industrial Co Ltd Breaking device
US6664503B1 (en) 1999-09-07 2003-12-16 Asahi Glass Company, Ltd. Method for manufacturing a magnetic disk
US6795274B1 (en) 1999-09-07 2004-09-21 Asahi Glass Company, Ltd. Method for manufacturing a substantially circular substrate by utilizing scribing
US6829910B1 (en) 2000-04-25 2004-12-14 Asahi Glass Company, Ltd. Removal of enclosed glass parts after cutting using heating and cooling techniques
JP2002060235A (en) * 2000-08-18 2002-02-26 Nippon Sheet Glass Co Ltd Method for cutting glass plate and glass disk for recording medium
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
US8715777B2 (en) * 2006-03-24 2014-05-06 Hoya Corporation Method for producing glass substrate for magnetic disk and method for producing magnetic disk
US20120213921A1 (en) * 2006-03-24 2012-08-23 Hoya Glass Disk Philippines, Inc. Method for producing glass substrate for magnetic disk and method for producing magnetic disk
US20110107894A1 (en) * 2008-05-30 2011-05-12 Mitsuboshi Diamond Industrial Co., Ltd Brittle Material Substrate Chamfering Method
JP2010005974A (en) * 2008-06-30 2010-01-14 Mitsuboshi Diamond Industrial Co Ltd Tip holder and holder unit
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JP2009023351A (en) * 2008-08-08 2009-02-05 Beldex Corp Method of scribing
JP2010149282A (en) * 2008-12-23 2010-07-08 Mitsuboshi Diamond Industrial Co Ltd Method of forming through-hole in fragile material substrate
WO2010087423A1 (en) 2009-01-30 2010-08-05 三星ダイヤモンド工業株式会社 Cutter and method for cutting brittle material substrate using same
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KR20120002702A (en) * 2010-07-01 2012-01-09 주식회사 탑 엔지니어링 Scribing apparatus for glass panel and scribing method
KR20140114285A (en) * 2013-03-18 2014-09-26 미쓰보시 다이야몬도 고교 가부시키가이샤 Scribing method and scribing device
WO2015063960A1 (en) * 2013-10-30 2015-05-07 坂東機工株式会社 Glass plate scribing device
JP2015120251A (en) * 2013-12-20 2015-07-02 三星ダイヤモンド工業株式会社 Scribing wheel for forming hollow hole, and method for forming hollow hole
JP2015160802A (en) * 2014-04-18 2015-09-07 坂東機工株式会社 Method and apparatus for processing glass plate
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JP2015086133A (en) * 2015-01-28 2015-05-07 坂東機工株式会社 Scribe device of glass plate
KR20170013157A (en) 2015-07-27 2017-02-06 미쓰보시 다이야몬도 고교 가부시키가이샤 Method for forming vertical crack in brittle material substrate and method for dividing brittle material substrate
JP2017047546A (en) * 2015-08-31 2017-03-09 三星ダイヤモンド工業株式会社 Method for formation of inclination crack in brittle material substrate and method for segmentation of brittle material substrate
JP2018015989A (en) * 2016-07-28 2018-02-01 三星ダイヤモンド工業株式会社 Method for dividing brittle substrate
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US10745313B2 (en) 2016-10-10 2020-08-18 South China University Of Technology Method for micro-grinding tip-accurately induced brittle fracture forming of curved mirror surface
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