EP0854010A1 - Method for prolonging the operating life of a grinding wheel - Google Patents
Method for prolonging the operating life of a grinding wheel Download PDFInfo
- Publication number
- EP0854010A1 EP0854010A1 EP98100131A EP98100131A EP0854010A1 EP 0854010 A1 EP0854010 A1 EP 0854010A1 EP 98100131 A EP98100131 A EP 98100131A EP 98100131 A EP98100131 A EP 98100131A EP 0854010 A1 EP0854010 A1 EP 0854010A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- grinding
- time
- pressure
- liquid jet
- high pressure
- 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- Withdrawn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
- B24B53/00—Devices or means for dressing or conditioning abrasive surfaces
- B24B53/007—Cleaning of grinding wheels
-
- 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
- B24B53/00—Devices or means for dressing or conditioning abrasive surfaces
- B24B53/095—Cooling or lubricating during dressing operation
-
- 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
- B24B9/14—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 optical work, e.g. lenses, prisms
Definitions
- the invention relates to a method for increasing the Service life of grinding wheels for grinding the edge of Spectacle lenses made of a core disk, preferably made of plastic and a ring made of sintered metal with embedded Diamond particles.
- Such a grinding wheel is in the German utility model 72 02 327.
- the plastic core disc is by means of a hub bore attached to a grinding spindle.
- the core disc is a ring made of sintered bronze exists, in which fine diamond particles are embedded.
- a grinding device is known from German laid-open specification 1 502 438 known in which the by adding a detergent Particles that are embedded in the surface are released and be washed out of the surface. It will Detergent between the surfaces of the disc and the Baffle plate deflected again and again and should thereby be repeated Times come into close contact with the surface of the disc, so that this surface is sufficiently cooled and the collected Abrasion is released.
- the invention is based on the problem of the service life of Increase grinding wheels of the type mentioned by a frequent dressing is avoided without sacrificing the Grinding device with expensive additional equipment to have to equip.
- the invention is based on the knowledge that the sharpness of the The grinding surface of diamond grinding wheels diminishes in that the pores become clogged with abrasion. Because of the waning Sharpness of the grinding surface must either be the grinding pressure or the grinding time can be increased to a given lens shape grinding. This increased contact pressure or the increased However, grinding time increases the wear on the grinding surface, which is also uneven, so that the grinding wheel must be dressed and leveled, which inevitably leads to a additional wear and thus a reduction in Service life. These disadvantages are solved with the avoided inventive method because of cleaning by means of the jet of liquid under high pressure Grinding surface stays sharp longer, the grinding pressure or the Grinding time does not have to be increased so that it is less worn unevenly and therefore less frequently dressed and must be equalized.
- the pressure of the liquid can preferably be more than 100 bar be.
- the cooling liquid used during grinding can be used Cleaning and sharpening the grinding surface can be used can be unfiltered, so that in the coolant included grinding abrasion and those also rubbed off Diamond particles an intensive cleaning and therefore a Keep the grinding surface sharp.
- the application of high pressure standing liquid jet during grinding take place so that for cleaning and keeping the Sanding surface no additional time is required.
- the exposure to the high pressure Liquid jet can run continuously during grinding take place and serve the coolant supply, so that no further Coolant supply is required. Because the coolant at The grinding surface is exposed to high pressure is atomized, however, is a well-sealed grinding chamber required. Preferably, however, the pressure of the Liquid jet only for cleaning and keeping time sharp Time should be set so high that the desired according to the invention Effect is achieved, and can during the grinding process, if the liquid also serves to supply coolant to one lower pressure can be reduced to energy consumption reduce and a permanent strong atomization of the coolant to avoid during the grinding process.
- a dressing in the usual way by means of a Dressing stone or a rotating, possibly driven Dressing disc take place, according to the invention during the Dressing process is an application of high pressure standing liquid jet takes place in order to dressing support.
- the dressing tool can be made of diamond, corundum in a known manner or steel and also serve to provide an existing one Get the faceted groove back into shape.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Grinding-Machine Dressing And Accessory Apparatuses (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zum Erhöhen der Gebrauchsdauer von Schleifscheiben zum Schleifen des Randes von Brillengläsern aus einer Kernscheibe, vorzugsweise aus Kunststoff und einem Ring aus Sintermetall mit eingebetteten Diamantpartikeln.The invention relates to a method for increasing the Service life of grinding wheels for grinding the edge of Spectacle lenses made of a core disk, preferably made of plastic and a ring made of sintered metal with embedded Diamond particles.
Eine derartige Schleifscheibe ist in dem deutschen Gebrauchsmuster 72 02 327 beschrieben. Die Kernscheibe aus Kunststoff ist mittels einer Nabenbohrung an einer Schleifspindel befestigt. Auf diese Kernscheibe ist ein Ring aufgebracht, der aus Sinterbronze besteht, in die feine Diamantpartikel eingebettet sind. Mit derartigen Schleifscheiben lassen sich die Ränder von Brillengläsern aus Silikatglas und aus Kunststoff formschleifen, um sie in ein ausgewähltes Brillengestell einzupassen. In der Regel ist eine derartige Schleifscheibe noch mit einer Facettennut versehen, um an das formgeschliffene Brillenglas eine Dachfacette anzuschleifen, mittels derer das Brillenglas in einer Facettennut des Brillengestells gehalten wird.Such a grinding wheel is in the German utility model 72 02 327. The plastic core disc is by means of a hub bore attached to a grinding spindle. To this The core disc is a ring made of sintered bronze exists, in which fine diamond particles are embedded. With such grinding wheels, the edges of Spectacle lenses made of silicate glass and plastic, to fit them in a selected eyeglass frame. In the As a rule, such a grinding wheel is still with a facet groove to attach a roof facet to the polished lens to grind by means of which the spectacle lens in a faceted groove of the eyeglass frame is held.
Diese bekannten Schleifscheiben mit einem Ring aus Sintermetall und eingebetteten Diamantpartikeln sind zwar verhältnismäßig kostspielig, weisen jedoch eine hohe Lebensdauer auf, vorausgesetzt der Ring aus Sintermetall und die Kernscheibe aus Kunststoff werden aus geeigneten Materialien hergestellt und einer strengen Qualitätskontrolle unterzogen. Durch das Schleifen von Brillengläsern nutzt sich die Schleifscheibe ungleichmäßig ab, läßt sich jedoch durch Abrichten und Egalisieren wieder brauchbar machen, bis der Ring aus Sintermetall so dünn geworden ist, daß eine weitere Benutzung nicht mehr möglich ist.These known grinding wheels with a ring made of sintered metal and embedded diamond particles are proportionate expensive, but have a long lifespan, provided the ring is made of sintered metal and the core disk is made of Plastic is made from suitable materials and one subjected to strict quality control. By grinding Eyeglass lenses wear the grinding wheel unevenly, can be used again by dressing and leveling until the sintered metal ring has become so thin that further use is no longer possible.
Dieses Abrichten ist nach dem Schleifen von etwa 5.000 Brillengläsern aus Silikatglas erforderlich. Hierdurch wird die Schleifscheibe zwar wieder egalisiert, jedoch muß dazu so viel Schleifmittel von der Schleifscheibenoberfläche abgetragen werden, daß die Lebensdauer insgesamt beschränkt ist. Um diesem Nachteil abzuhelfen, ist in der US-Patentschrift 4 233 784 ein Schleifverfahren vorgeschlagen, mit dem sich angeblich 25.000 oder mehr Brillengläsern aus Silikatglas schleifen lassen. Zu diesem Zweck wird die Schleifscheibe vor dem Schleifvorgang abgetastet und das Brillenglas wird auf einen Bereich der Schleifscheibe aufgesetzt, der gegenüber benachbarten Bereichen höher ist, so daß durch das Schleifen eines Brillenglases stets die höheren Bereiche abgenutzt werden und insgesamt eine längere Benutzungsdauer erreichbar ist, ohne daß die Schleifscheibe abgerichtet werden muß. Die hierfür verwendete Steuerung verteuert nicht unerheblich die Schleifmaschine. This dressing is after grinding about 5,000 Glasses made of silicate glass required. This will make the The grinding wheel is leveled again, but there has to be so much Abrasives are removed from the grinding wheel surface, that the overall lifespan is limited. To this disadvantage to remedy is in U.S. Patent 4,233,784 Grinding process proposed that is said to be 25,000 or Have more lenses made of silicate glass grinded. To this For this purpose, the grinding wheel is scanned before the grinding process and the eyeglass is placed on an area of the grinding wheel put on, which is higher than neighboring areas, so that always grind the higher areas by grinding a lens be worn out and overall a longer period of use can be reached without dressing the grinding wheel got to. The control used for this increases the price considerably the grinder.
Aus der deutschen Offenlegungsschrift 1 502 438 ist eine Schleifvorrichtung bekannt, bei der durch Zufuhr eines Spülmittels die Teilchen, die in der Oberfläche eingebettet sind, freigegeben werden und aus der Oberfläche herausgespült werden. Dabei wird das Spülmittel zwischen den Oberflächen der Scheibe und der Prallplatte immer wieder umgelenkt und soll dadurch zum wiederholten Male in dichte Berührung mit der Oberfläche der Scheibe gelangen, so daß diese Oberfläche ausreichend gekühlt wird und der gesammelte Abrieb freigegeben wird.A grinding device is known from German laid-open specification 1 502 438 known in which the by adding a detergent Particles that are embedded in the surface are released and be washed out of the surface. It will Detergent between the surfaces of the disc and the Baffle plate deflected again and again and should thereby be repeated Times come into close contact with the surface of the disc, so that this surface is sufficiently cooled and the collected Abrasion is released.
Der Erfindung liegt das Problem zugrunde, die Gebrauchsdauer von Schleifscheiben der eingangs erwähnten Art zu erhöhen, indem ein häufiges Abrichten vermieden wird, ohne dabei die Schleifvorrichtung mit teueren, zusätzlichen Einrichtungen ausstatten zu müssen.The invention is based on the problem of the service life of Increase grinding wheels of the type mentioned by a frequent dressing is avoided without sacrificing the Grinding device with expensive additional equipment to have to equip.
Ausgehend von dieser Problemstellung wird bei einem Verfahren der eingangs erwähnten Art vorgeschlagen, daß erfindungsgemäß die Schleifoberfläche zumindest von Zeit zu Zeit durch einen unter hohem Druck von mindestens 25 bar stehenden Flüssigkeitsstrahl beaufschlagt und dadurch gereinigt und scharf gehalten wird.Based on this problem, a initially mentioned type proposed that the invention Grinding surface at least from time to time by a under high pressure of at least 25 bar liquid jet acted upon and thereby cleaned and kept sharp.
Die Erfindung geht von der Erkenntnis aus, daß die Schärfe der Schleifoberfläche von Diamantschleifscheiben dadurch nachläßt, daß sich die Poren mit Schleifabrieb zusetzen. Wegen der nachlassenden Schärfe der Schleifoberfläche muß entweder der Schleifdruck oder die Schleifdauer erhöht werden, um ein gegebenes Brillenglas formzuschleifen. Dieser erhöhte Anpreßdruck oder die erhöhte Schleifdauer steigern jedoch die Abnutzung der Schleifoberfläche, die dazu noch ungleichmäßig ist, so daß die Schleifscheibe abgerichtet und egalisiert werden muß, was zwangsläufig zu einem zusätzlichen Verschleiß und damit zu einer Verminderung der Lebensdauer führt. Diese Nachteile werden mit dem erfindungsgemäßen Verfahren vermieden, da durch das Reinigen mittels des unter hohem Druck stehenden Flüssigkeitsstrahls die Schleifoberfläche länger scharf bleibt, der Schleifdruck oder die Schleifdauer nicht erhöht werden muß, so daß sie sich weniger ungleichmäßig abnutzt und daher auch weniger häufig abgerichtet und egalisiert werden muß.The invention is based on the knowledge that the sharpness of the The grinding surface of diamond grinding wheels diminishes in that the pores become clogged with abrasion. Because of the waning Sharpness of the grinding surface must either be the grinding pressure or the grinding time can be increased to a given lens shape grinding. This increased contact pressure or the increased However, grinding time increases the wear on the grinding surface, which is also uneven, so that the grinding wheel must be dressed and leveled, which inevitably leads to a additional wear and thus a reduction in Service life. These disadvantages are solved with the avoided inventive method because of cleaning by means of the jet of liquid under high pressure Grinding surface stays sharp longer, the grinding pressure or the Grinding time does not have to be increased so that it is less worn unevenly and therefore less frequently dressed and must be equalized.
Vorzugsweise kann der Druck der Flüssigkeit mehr als 100 bar betragen.The pressure of the liquid can preferably be more than 100 bar be.
Es kann die beim Schleifen eingesetzte Kühlflüssigkeit zum Reinigen und Scharfhalten der Schleiffläche verwendet werden, die ungefiltert sein kann, so daß der in der Kühlflüssigkeit enthaltene Schleifabrieb und die ebenfalls abgeriebenen Diamantpartikel eine intensive Reinigung und damit ein Scharfhalten der Schleifoberfläche bewirken.The cooling liquid used during grinding can be used Cleaning and sharpening the grinding surface can be used can be unfiltered, so that in the coolant included grinding abrasion and those also rubbed off Diamond particles an intensive cleaning and therefore a Keep the grinding surface sharp.
Vorzugsweise kann die Beaufschlagung mit dem unter hohem Druck stehenden Flüssigkeitsstrahl während der Schleifbearbeitung erfolgen, so daß für das Reinigen und Scharfhalten der Schleifoberfläche kein zusätzlicher Zeitaufwand erforderlich ist. Preferably, the application of high pressure standing liquid jet during grinding take place so that for cleaning and keeping the Sanding surface no additional time is required.
Die Beaufschlagung mit dem unter hohem Druck stehenden Flüssigkeitsstrahl kann während der Schleifbearbeitung dauernd erfolgen und der Kühlmittelzufuhr dienen, so daß keine weitere Kühlmittelzufuhr erforderlich ist. Da das Kühlmittel bei der Beaufschlagung der Schleifoberfläche unter hohem Druck stark zerstäubt wird, ist allerdings eine gut abgedichtete Schleifkammer erforderlich. Vorzugsweise kann jedoch der Druck des Flüssigkeitsstrahls nur zum Reinigen und Scharfhalten von Zeit zu Zeit so hoch eingestellt sein, daß die erfindungsgemäß gewollte Wirkung erzielt wird, und kann während des Schleifvorgangs, wenn die Flüssigkeit auch der Kühlmittelzufuhr dient, auf einen niedrigeren Druck herabgesetzt werden, um den Energieverbrauch herabzusetzen und ein dauerndes starkes Zerstäuben des Kühlmittels während des Schleifvorgangs zu vermeiden.The exposure to the high pressure Liquid jet can run continuously during grinding take place and serve the coolant supply, so that no further Coolant supply is required. Because the coolant at The grinding surface is exposed to high pressure is atomized, however, is a well-sealed grinding chamber required. Preferably, however, the pressure of the Liquid jet only for cleaning and keeping time sharp Time should be set so high that the desired according to the invention Effect is achieved, and can during the grinding process, if the liquid also serves to supply coolant to one lower pressure can be reduced to energy consumption reduce and a permanent strong atomization of the coolant to avoid during the grinding process.
Wenn die Schleifoberfläche trotz der Reinigung und des Scharfhaltens durch den unter hohem Druck stehenden Flüssigkeitsstrahl ungleichmäßig abgenutzt und nicht mehr genügend scharf ist, kann ein Abrichten in üblicher Weise mittels eines Abrichtsteins oder einer drehbaren, ggf. angetriebenen Abrichtscheibe erfolgen, wobei erfindungsgemäß während des Abrichtvorgangs eine Beaufschlagung mit dem unter hohem Druck stehenden Flüssigkeitsstrahl erfolgt, um das Abrichten zu unterstützen.If the grinding surface despite cleaning and Keeping focused due to the high pressure Liquid jet worn unevenly and no longer enough is sharp, a dressing in the usual way by means of a Dressing stone or a rotating, possibly driven Dressing disc take place, according to the invention during the Dressing process is an application of high pressure standing liquid jet takes place in order to dressing support.
Das Abrichtwerkzeug kann in bekannter Weise aus Diamant, Korund oder Stahl bestehen und auch dazu dienen, eine ggf. vorhandene Facettennut wieder in Form zu bringen.The dressing tool can be made of diamond, corundum in a known manner or steel and also serve to provide an existing one Get the faceted groove back into shape.
Claims (8)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19701287 | 1997-01-16 | ||
| DE19701287A DE19701287A1 (en) | 1997-01-16 | 1997-01-16 | Process for increasing the service life of grinding wheels |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP0854010A1 true EP0854010A1 (en) | 1998-07-22 |
Family
ID=7817514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98100131A Withdrawn EP0854010A1 (en) | 1997-01-16 | 1998-01-07 | Method for prolonging the operating life of a grinding wheel |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US5961376A (en) |
| EP (1) | EP0854010A1 (en) |
| DE (1) | DE19701287A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007000208A1 (en) * | 2006-04-05 | 2007-10-11 | Denso Corporation, Kariya | Grinder, with a conical tool, has a coolant feed sprayed on the tool surface on retraction after grinding to clear it of sludge |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI101865B (en) * | 1996-09-23 | 1998-09-15 | Serguei Iachine | Workhead for machining materials |
| WO2003042190A1 (en) * | 2001-11-12 | 2003-05-22 | Pfizer Products Inc. | N-alkyl-adamantyl derivatives as p2x7-receptor antagonists |
| PA8557501A1 (en) * | 2001-11-12 | 2003-06-30 | Pfizer Prod Inc | BENZAMIDA, HETEROARILAMIDA AND INVESTED AMIDAS |
| GB0217593D0 (en) * | 2002-07-30 | 2002-09-11 | Raysun Innovative Design Ltd | Method and apparatus for grinding |
| PA8591801A1 (en) * | 2002-12-31 | 2004-07-26 | Pfizer Prod Inc | BENZAMID INHIBITORS OF THE P2X7 RECEIVER. |
| US7071223B1 (en) * | 2002-12-31 | 2006-07-04 | Pfizer, Inc. | Benzamide inhibitors of the P2X7 receptor |
| CA2525437C (en) * | 2003-05-12 | 2009-04-28 | Pfizer Products Inc. | Benzamide inhibitors of the p2x7 receptor |
| CA2572118A1 (en) * | 2004-06-29 | 2006-01-12 | Pfizer Products Inc. | Method for preparing 5-`4-(2-hydroxy-ethyl)-3,5-dioxo-4,5-dihydro-3h-`1,2,4!-triazin-2-yl!benzamide derivatives with p2x7 inhibiting activity by reaction of the derivative unsubstituted in 4-position of the triazine with an oxiran in the presence of a lewis acid |
| MXPA06014022A (en) * | 2004-06-29 | 2007-02-08 | Pfizer Prod Inc | Methods for preparing p2x7 inhibitors. |
| CA2572119A1 (en) * | 2004-06-29 | 2006-01-12 | Warner-Lambert Company Llc | Combination therapies utilizing benzamide inhibitors of the p2x7 receptor |
| US7568968B2 (en) | 2007-08-16 | 2009-08-04 | Rolls-Royce Corporation | Coolant nozzle positioning for machining work-pieces |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3167893A (en) * | 1962-11-05 | 1965-02-02 | Sheffield Corp | Apparatus for cleaning grinding wheels |
| US3244162A (en) * | 1963-05-06 | 1966-04-05 | Ex Cell O Corp | Grinding wheel dressing means and process |
| DE1502438A1 (en) * | 1963-01-25 | 1969-04-10 | Hutton Norman Horatio | Grinding device |
| DE7202327U (en) * | 1972-01-21 | 1972-05-10 | Helbrecht O | Grinding wheel for glasses facets |
| US4233784A (en) * | 1979-03-12 | 1980-11-18 | Ait Industries, Inc. | Lens edging apparatus |
| GB2067935A (en) * | 1980-01-25 | 1981-08-05 | Henderson Diamond Tool Co Ltd | Dressing or shaping grinding wheels |
| EP0584578A1 (en) * | 1992-07-31 | 1994-03-02 | Ngk Insulators, Ltd. | A ground dust removing apparatus and method for grinding wheel |
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| US24448A (en) * | 1859-06-21 | Improved device for converting reciprocating into alternate circular motion | ||
| US2426817A (en) * | 1945-01-19 | 1947-09-02 | Charles F Charlton | Cooling system for machine tools |
| US3922821A (en) * | 1973-09-14 | 1975-12-02 | American Optical Corp | Grinding method and coolant therefor |
| US4109422A (en) * | 1976-04-05 | 1978-08-29 | Parsons Enterprises, Inc. | Sander cleaning process |
| JPS585148B2 (en) * | 1976-10-15 | 1983-01-29 | 豊田工機株式会社 | Grinding wheel repair method and device |
| US4182082A (en) * | 1978-01-19 | 1980-01-08 | Ernst Winter & Sohn (Gmbh & Co.) | Method for the profiling of grinding wheels and apparatus therefor |
| US4279102A (en) * | 1978-07-24 | 1981-07-21 | Magnetic Peripherals Inc. | Method of manufacturing narrow track ferrite head cores |
| US4587763A (en) * | 1985-02-17 | 1986-05-13 | Hahn Robert S | Grinding machine |
| US5115600A (en) * | 1989-05-30 | 1992-05-26 | Fuji Seiki Machine Works, Ltd. | Dressing method and apparatus for super abrasive grinding wheel |
| US5291693A (en) * | 1992-08-20 | 1994-03-08 | Texas Instruments Incorporated | Semiconductors structure precision lapping method and system |
| US5616069A (en) * | 1995-12-19 | 1997-04-01 | Micron Technology, Inc. | Directional spray pad scrubber |
| US5645682A (en) * | 1996-05-28 | 1997-07-08 | Micron Technology, Inc. | Apparatus and method for conditioning a planarizing substrate used in chemical-mechanical planarization of semiconductor wafers |
-
1997
- 1997-01-16 DE DE19701287A patent/DE19701287A1/en not_active Withdrawn
-
1998
- 1998-01-07 EP EP98100131A patent/EP0854010A1/en not_active Withdrawn
- 1998-01-16 US US09/008,168 patent/US5961376A/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3167893A (en) * | 1962-11-05 | 1965-02-02 | Sheffield Corp | Apparatus for cleaning grinding wheels |
| DE1502438A1 (en) * | 1963-01-25 | 1969-04-10 | Hutton Norman Horatio | Grinding device |
| US3244162A (en) * | 1963-05-06 | 1966-04-05 | Ex Cell O Corp | Grinding wheel dressing means and process |
| DE7202327U (en) * | 1972-01-21 | 1972-05-10 | Helbrecht O | Grinding wheel for glasses facets |
| US4233784A (en) * | 1979-03-12 | 1980-11-18 | Ait Industries, Inc. | Lens edging apparatus |
| GB2067935A (en) * | 1980-01-25 | 1981-08-05 | Henderson Diamond Tool Co Ltd | Dressing or shaping grinding wheels |
| EP0584578A1 (en) * | 1992-07-31 | 1994-03-02 | Ngk Insulators, Ltd. | A ground dust removing apparatus and method for grinding wheel |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007000208A1 (en) * | 2006-04-05 | 2007-10-11 | Denso Corporation, Kariya | Grinder, with a conical tool, has a coolant feed sprayed on the tool surface on retraction after grinding to clear it of sludge |
| US7563154B2 (en) | 2006-04-05 | 2009-07-21 | Denso Corporation | Grinding apparatus having sludge-removing device and method of removing sludge |
| DE102007000208B4 (en) * | 2006-04-05 | 2010-11-04 | DENSO CORPORATION, Kariya-shi | Grinding apparatus and grinding process |
Also Published As
| Publication number | Publication date |
|---|---|
| US5961376A (en) | 1999-10-05 |
| DE19701287A1 (en) | 1998-07-23 |
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