DE3800732A1 - Process for cutting glass blanks out of glass sheets, and apparatus for carrying out the process - Google Patents
Process for cutting glass blanks out of glass sheets, and apparatus for carrying out the processInfo
- Publication number
- DE3800732A1 DE3800732A1 DE19883800732 DE3800732A DE3800732A1 DE 3800732 A1 DE3800732 A1 DE 3800732A1 DE 19883800732 DE19883800732 DE 19883800732 DE 3800732 A DE3800732 A DE 3800732A DE 3800732 A1 DE3800732 A1 DE 3800732A1
- Authority
- DE
- Germany
- Prior art keywords
- glass
- blanks
- blank
- drive
- grinding wheels
- 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.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B9/00—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
- B24B9/02—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground
- B24B9/06—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain
- B24B9/08—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass
- B24B9/10—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass of plate glass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B27/00—Other grinding machines or devices
- B24B27/06—Grinders for cutting-off
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/26—Apparatus or processes specially adapted for the manufacture of record carriers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
Description
Rohlinge für die Herstellung bestimmter Artikel aus Glas, wie z. B. Hartdisketten, Sonnenreflektoren, Autoscheiben und -scheinwerfer, die aus Glastafeln ausgeschnitten werden, erfordern abgefaßte Kanten, wenn sie für den Weiterverarbei tungsprozeß erhitzt werden müssen. Beim herkömmlichen Aus schneideverfahren werden die Rohlinge im Umriß lediglich 1. mit Diamanten geritzt und 2. danach ausgebrochen. Die Bruchkanten sind rechtwinklig zur Oberfläche und die scharfen Ecken neigen beim Aufheizprozeß zum Abplatzen. Da her müssen sie in einem dritten Arbeitsgang "gesäumt" wer den.Blanks for the manufacture of certain articles made of glass, such as B. hard disks, sun reflectors, car windows and headlights that are cut out of glass panels, require chamfered edges when used for further processing tion process must be heated. When conventional off The blanks are only cut in outline 1. scratched with diamonds and 2. broken out afterwards. The breaking edges are perpendicular to the surface and the sharp corners tend to flake off during the heating process. There here they have to be "hemmed" in a third step the.
Das vorliegende Verfahren mit der beschriebenen Vorrichtung (nach Fig. 1 u. 2) soll diese drei Arbeitsgänge zusammen fassen.The present method with the device described (according to FIGS. 1 and 2) is intended to summarize these three work steps.
Der Ausschneidevorgang läuft folgendermaßen ab:The cutting process is as follows:
Die Glastafel wird zwischen die beiden Schleifköpfe (5) ge bracht, diese sind über die Positionierantriebe (1) in der Endlage (größter Abstand der Schleifscheiben (6)). Die Positionierantriebe bewegen die in Rotation befindlichen Schleifscheiben (6) von beiden Seiten gleichzeitig auf die Scheibe zu. Im Berührungspunkt beginnt der Vorschub auf der Glastafel. Bei einem runden Rohling arbeitet lediglich der Antrieb (2) und bewegt die Schleifköpfe (5) um die Rotations achse (mit dem Radius R min./R max.), wobei der klein ste Durchmesser 2mal R min. ist und der größte 2mal R max. Je nach Zerspanungsfähigkeit der Schleifscheiben werden die 2 Schleifköpfe (5) bis auf einen einstellbaren Betrag von 0,2 bis 0,5 mm aufeinander zugefahren. Während dieses Aus schneidevorganges werden die Halter (8) mit den Greifern (7) auf die Glastafel gedrückt und von den rotierenden Schleif köpfen (5) über die Mitnehmer (8) mitgedreht. Der Greifer (7) auf dem Rohling steht fixiert auf der Mitte; zwischen Hal ter (8) und Greifer (7) befindet sich ein Drehlager. Für den Fall, daß die auszuschneidenden Rohlinge keine Kreisform haben, werden die beiden Antriebe: "Hub-Horizontal" (12) und "Hub-Veritikal" (11) zuhilfe genommen, wobei der An trieb (2) die Tangentialsteuerung (2) der Schleifscheiben übernimmt. Die Ecken dieser Rohlinge müssen grundsätz lich mit einem Radius zwischen R min. und R max. ausge führt werden. Sollte die Greifervorrichtung auch für diese Ausschneidevariante benutzt werden, muß der Greifer (7) als Laufrolle ausgeführt sein, damit er entsprechend des Profil verlaufs auf der Glastafel rollen kann. Mit dieser Greif vorrichtung kann nach Beendigung des Ausschneidevorganges, d. h., wenn die Schleifscheiben (6) sich bis auf 0,2 mm /0,5 mm (Restwandstärke der Glastafel) genähert haben, der Ausbrechvorgang eingeleitet werden, indem eine Seite des Greiferhubs drucklos geschaltet wird und die andere Seite den Glasrohling aus der Tafel herausdrückt.The glass sheet is placed between the two grinding heads ( 5 ), these are in the end position via the positioning drives ( 1 ) (greatest distance between the grinding wheels ( 6 )). The positioning drives move the grinding wheels ( 6 ) in rotation towards the wheel from both sides at the same time. The feed on the glass plate begins at the point of contact. In the case of a round blank, only the drive ( 2 ) works and moves the grinding heads ( 5 ) around the axis of rotation (with the radius R min./ R max.), The smallest diameter being twice R min. is and the largest 2 times R max. Depending on the machinability of the grinding wheels, the 2 grinding heads ( 5 ) are moved towards each other up to an adjustable amount of 0.2 to 0.5 mm. During this cutting process, the holders ( 8 ) with the grippers ( 7 ) are pressed onto the glass sheet and rotated by the rotating grinding heads ( 5 ) via the drivers ( 8 ). The gripper ( 7 ) on the blank is fixed in the middle; there is a pivot bearing between the holder ( 8 ) and the gripper ( 7 ). In the event that the blanks to be cut have no circular shape, the two drives: "Hub-Horizontal" ( 12 ) and "Hub-Veritikal" ( 11 ) are used, with the drive ( 2 ) on the tangential control ( 2 ) Grinding wheels takes over. The corners of these blanks must generally have a radius between R min. and R max. be carried out. If the gripper device is also used for this cutting variant, the gripper ( 7 ) must be designed as a roller so that it can roll on the glass sheet according to the profile. With this gripping device, once the cutting process has ended, ie when the grinding wheels ( 6 ) have approached 0.2 mm / 0.5 mm (residual wall thickness of the glass sheet), the stripping process can be initiated by depressurizing one side of the gripper stroke and the other side pushes the glass blank out of the board.
Bei größeren und vor allen Dingen nicht runden Rohlingen muß von außen eine zusätzliche Greifvorrichtung hinzukom men, indem die Schleifköpfe (5) in einer bestimmten Posi tion angehalten werden, um den Zugriff zu gewährleisten. Beim Schleifen mit Diamantscheiben ist eine ständige Kühlung durch Wasser erforderlich; die Glastafel wird da her zweckmäßigerweise senkrecht eingeführt, d. h. Fig. 2 ist eine Draufsicht auf die Vorrichtung, Fig. 1 eine Sei tenansicht. Auf diese Weise ist die Wasserzuführung zu den Schleifscheiben auf beiden Seiten gleichen Verhältnissen unterworfen.For larger and above all not round blanks, an additional gripping device must be added from the outside by stopping the grinding heads ( 5 ) in a certain position to ensure access. When grinding with diamond discs, constant cooling by water is required; the glass sheet is conveniently inserted here vertically, ie Fig. 2 is a plan view of the device, Fig. 1 Be a view. In this way, the water supply to the grinding wheels is subject to the same conditions on both sides.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19883800732 DE3800732A1 (en) | 1988-01-13 | 1988-01-13 | Process for cutting glass blanks out of glass sheets, and apparatus for carrying out the process |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19883800732 DE3800732A1 (en) | 1988-01-13 | 1988-01-13 | Process for cutting glass blanks out of glass sheets, and apparatus for carrying out the process |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3800732A1 true DE3800732A1 (en) | 1989-07-27 |
Family
ID=6345179
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19883800732 Withdrawn DE3800732A1 (en) | 1988-01-13 | 1988-01-13 | Process for cutting glass blanks out of glass sheets, and apparatus for carrying out the process |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE3800732A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002062715A1 (en) * | 2001-02-08 | 2002-08-15 | Cardinal Cg Company | Method and apparatus for removing coatings applied to surfaces of a substrate |
CN111660192A (en) * | 2020-06-23 | 2020-09-15 | 重庆小马智诚科技有限责任公司 | Numerical control corner cutting machine |
-
1988
- 1988-01-13 DE DE19883800732 patent/DE3800732A1/en not_active Withdrawn
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002062715A1 (en) * | 2001-02-08 | 2002-08-15 | Cardinal Cg Company | Method and apparatus for removing coatings applied to surfaces of a substrate |
US6971948B2 (en) | 2001-02-08 | 2005-12-06 | Cardinal Cg Company | Method and apparatus for removing coatings applied to surfaces of a substrate |
US6988938B2 (en) | 2001-02-08 | 2006-01-24 | Cardinal Cg Company | Method and apparatus for removing coatings applied to surfaces of a substrate |
CN111660192A (en) * | 2020-06-23 | 2020-09-15 | 重庆小马智诚科技有限责任公司 | Numerical control corner cutting machine |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8139 | Disposal/non-payment of the annual fee |