EP0794036B1 - Machine for polishing and/or grinding - Google Patents
Machine for polishing and/or grinding Download PDFInfo
- Publication number
- EP0794036B1 EP0794036B1 EP97102385A EP97102385A EP0794036B1 EP 0794036 B1 EP0794036 B1 EP 0794036B1 EP 97102385 A EP97102385 A EP 97102385A EP 97102385 A EP97102385 A EP 97102385A EP 0794036 B1 EP0794036 B1 EP 0794036B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- machine
- liquid
- valve
- supercritical
- pipe
- 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 - Lifetime
Links
- 238000005498 polishing Methods 0.000 title claims abstract description 11
- 239000007788 liquid Substances 0.000 claims abstract description 21
- 230000001105 regulatory effect Effects 0.000 claims abstract 2
- 238000003754 machining Methods 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 3
- 229920002457 flexible plastic Polymers 0.000 claims description 2
- 230000017525 heat dissipation Effects 0.000 claims 1
- 239000007789 gas Substances 0.000 description 26
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 238000001816 cooling Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000007792 gaseous phase Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
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
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
-
- 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
- B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
- B24B23/02—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor
- B24B23/026—Fluid driven
-
- 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
- B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
- B24B55/02—Equipment for cooling the grinding surfaces, e.g. devices for feeding coolant
Definitions
- the invention relates to a machine according to the preamble of claim 1.
- a machine of the applicant which comprises a polishing wheel and a cold gas supply for cooling the surface to be polished or ground, the cold gas supply preferably opening into a gas outlet which is arranged in the axis of rotation of the polishing wheel .
- the device is preferably operated with N 2 as the cold gas, which is stored in liquid form, evaporated and fed to the gas outlet via the cold gas supply.
- N 2 as the cold gas
- the nitrogen In order to ensure an optimal operating temperature of the cold gas, which essentially depends on the material properties of the surface to be treated, the nitrogen must be heated at a complex temperature. It is also known to operate such a machine with CO 2 as the cold gas, which has a temperature of -78 ° C. during the evaporation of liquid CO 2 .
- This temperature is advantageous for the operation of such machines, since it usually exactly meets the requirements for cooling.
- the machine used according to the prior art is preferably operated with N 2 , since this gas can be conducted in lines without problems. For this it is accepted that the vaporized nitrogen is brought to the desired temperature by supplying energy.
- N 2 has been preferred so far because CO 2 has the property of having a liquid-gaseous phase transition, CO 2 snow to form, the lines and the gas outlet clogged. This significantly impedes the operation of the machine and limits the operating time.
- the invention is therefore based on the object of providing a machine for polishing and grinding, with which treatment of surfaces with CO 2 as cold gas is possible without problems.
- a polishing wheel 2 is used as Machining tool set in rotation by a gear 3, which by an air motor 4 is driven.
- the Gas supply 5 opens into the tube 6, the upper end of which Thrust washer 9 and a stuffing box 10 with the aid of the adjusting device 11 is closed, which is designed as a union nut, with which the thread 8, the valve spindle 12 are moved axially within the tube 6 can.
- the expansion nozzle 7 has a tapered outlet Opening 13, an aperture 14 and a pressure screw 15.
- FIG. 3 the opening 13 that tapers conically, the diaphragm 14, the pressure screw 15, the tube 6 and the gas supply 5 are shown.
- the liquid or supercritical CO 2 flows from a riser bottle, a high-pressure, medium-pressure low-pressure tank or a pipeline into the machine 1 via the gas supply 5.
- the valve which regulates the flow rate of liquid or supercritical CO 2 is run through.
- the liquid or supercritical CO 2 enters the tube 6 and exits through the expansion nozzle 7. Due to the sudden expansion, the liquid or supercritical CO 2 evaporates and goes into the gas phase. It has a temperature of -78 ° C, which is very suitable for cooling sensitive surfaces. It is characteristic that no impermissible pressure losses occur in the gas supply 5 and the tube 6. As a result, there can be no disturbing CO 2 snow formation in these lines, which blocks the supply of CO 2 and clogs the gas paths. The relaxation takes place only in the nozzle area.
- the expansion nozzle 7 is in the immediate vicinity of the working area of the Machining tool arranged. It is preferably located in the Rotation axis of the polishing wheel 2. However, there are also arrangements conceivable, in which the expansion nozzle 7 in the region of the polishing disc 2 is introduced such that it with the polishing disc 2 a Rotational movement takes place. Of course, several can Relaxation nozzles 7 may be attached. As the opening of the expansion nozzle 7 come control cones or interchangeable, tapered on the outlet side Openings in question. Pinholes can also be used. At The use of a control cone can reduce the gas throughput of those to be solved Polishing or grinding task can be adapted.
- the diameter of the valve spindle 12 and the inside width of the tube 6 are dimensioned such that the liquid or supercritical CO 2 does not relax inside the tube 6.
- the dimensions of the valve spindle 12 and the tube 6 are preferably chosen so that the annular gap between the inner surface of the tube 6 and the outer surface of the valve spindle 12 is approximately 0.2 to 2 mm. In this case, a pressure drop can only take place at the outlet of the still liquid or supercritical CO 2 from the pipe 6 and the flow paths of the liquid or supercritical CO 2 are thus kept clear.
- the expansion nozzle 7 For the machining of surfaces that place special demands on the machining temperature, it is possible to equip the expansion nozzle 7 with a temperature sensor, which measures the current temperature and controls a heating device, preferably a small heating coil, which is arranged in the region of the expansion nozzle 7 is. This allows the environment of the expansion nozzle 7 to be tempered.
- a temperature sensor which measures the current temperature and controls a heating device, preferably a small heating coil, which is arranged in the region of the expansion nozzle 7 is.
- a heating device preferably a small heating coil
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Grinding-Machine Dressing And Accessory Apparatuses (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
- Nozzles (AREA)
- Disintegrating Or Milling (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
Abstract
Description
Die Erfindung betrifft eine Maschine nach dem Oberbegriff des Anspruchs 1.The invention relates to a machine according to the preamble of claim 1.
Aus der DE-PS 39 10 590 ist eine Maschine der Anmelderin bekannt, welche eine Polierscheibe und eine Kaltgaszufuhr zur Kühlung der zu polierenden oder zu schleifenden Oberfläche umfaßt, wobei die Kaltgaszufuhr vorzugsweise in einen Gasaustritt, der in der Rotationsachse der Polierscheibe angeordnet ist, mündet. Das Gerät wird bevorzugt mit N2 als Kaltgas betrieben, der in flüssiger Form bevorratet, verdampft und über die Kaltgaszufuhr dem Gasaustritt zugeführt wird. Um eine optimale Betriebstemperatur des Kaltgases, die im wesentlichen von den Materialeigenschaften der zu behandelnden Oberfläche abhängt, zu gewährleisten, muß der Stickstoff aufwendig temperiert werden. Es ist auch bekannt, eine solche Maschine mit CO2 als Kaltgas zu betreiben, das bei der Verdampfung von flüssigem CO2 eine Temperatur von -78°C aufweist. Diese Temperatur ist für den Betrieb solcher Maschinen vorteilhaft, da sie in der Regel den Erfordernissen an Kältebedarf genau gerecht wird. Die nach dem Stand der Technik eingesetzte Maschine wird jedoch vorzugsweise mit N2 betrieben, da dieses Gas problemlos in Leitungen geführt werden kann. Dafür wird in Kauf genommen, daß der verdampfte Stickstoff durch Zufuhr von Energie auf die gewünschte Temperatur gebracht wird. Obwohl das CO2 den tatsächlichen Anforderungen an die Betriebstemperatur wesentlich näher kommt und die Herstellung des Rohstoffes flüssiges CO2 wesentlich weniger Energie verbraucht, wurde bisher N2 bevorzugt, da CO2 die Eigenschaft hat, bei seinem Phasenübergang flüssig-gasförmig, CO2 -Schnee zu bilden, der Leitungen und den Gasaustritt verstopft. Der Betrieb der Maschine wird dadurch erheblich behindert und die Betriebsdauer eingeschränkt.From DE-PS 39 10 590 a machine of the applicant is known which comprises a polishing wheel and a cold gas supply for cooling the surface to be polished or ground, the cold gas supply preferably opening into a gas outlet which is arranged in the axis of rotation of the polishing wheel . The device is preferably operated with N 2 as the cold gas, which is stored in liquid form, evaporated and fed to the gas outlet via the cold gas supply. In order to ensure an optimal operating temperature of the cold gas, which essentially depends on the material properties of the surface to be treated, the nitrogen must be heated at a complex temperature. It is also known to operate such a machine with CO 2 as the cold gas, which has a temperature of -78 ° C. during the evaporation of liquid CO 2 . This temperature is advantageous for the operation of such machines, since it usually exactly meets the requirements for cooling. However, the machine used according to the prior art is preferably operated with N 2 , since this gas can be conducted in lines without problems. For this it is accepted that the vaporized nitrogen is brought to the desired temperature by supplying energy. Although the CO 2 comes much closer to the actual operating temperature requirements and the production of the raw material liquid CO 2 consumes considerably less energy, N 2 has been preferred so far because CO 2 has the property of having a liquid-gaseous phase transition, CO 2 snow to form, the lines and the gas outlet clogged. This significantly impedes the operation of the machine and limits the operating time.
Der Erfindung liegt daher die Aufgabe zugrunde, eine Maschine zum Polieren und Schleifen zu schaffen, mit der eine Behandlung von Oberflächen mit CO2 als Kaltgas störungsfrei möglich ist.The invention is therefore based on the object of providing a machine for polishing and grinding, with which treatment of surfaces with CO 2 as cold gas is possible without problems.
Ausgehend vom Oberbegriff des Anspruchs 1 ist die Aufgabe erfindungsgemäß gelöst mit den im kennzeichnenden Teil des Anspruchs 1 angegebenen Merkmalen.Starting from the preamble of claim 1, the object is the invention solved with the specified in the characterizing part of claim 1 Characteristics.
Mit der Maschine ist es nunmehr möglich, hochempfindliche Materialien, wie Lackoberflächen oder Kunststoffe, mit einer CO2 -Kühlung zu polieren und/oder zu schleifen, ohne daß Verstopfungen der Gaszufuhr oder des Gasaustrittes mit CO2 -Schnee zu Störungen im Arbeitsprozeß oder zu einer vorzeitigen Beendung der Behandlung führen.With the machine, it is now possible to polish and / or grind highly sensitive materials, such as paint surfaces or plastics, with CO 2 cooling, without blocking the gas supply or the gas outlet with CO 2 snow, leading to disruptions in the work process or to terminate treatment early.
Vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen angegeben.Advantageous developments of the invention are in the subclaims specified.
Die Zeichnungen zeigen eine Ausführungsform der erfindungsgemäßen Maschine in schematischer Form.The drawings show an embodiment of the machine according to the invention in a schematic Shape.
Es zeigt:
- Fig.1:
- Eine für die Durchführung des Verfahrens geeignete Maschine,
- Fig.2:
- Einen Ausschnitt der Maschine in Figur 1, in dem die Gaszufuhr und der Gasaustritt dargestellt sind,
- Fig.3:
- Einen Querschnitt durch den Gasaustritt.
- Fig.1:
- A machine suitable for carrying out the process,
- Fig. 2:
- A section of the machine in Figure 1, in which the gas supply and the gas outlet are shown,
- Fig. 3:
- A cross section through the gas outlet.
In der in Figur 1 dargestellten Maschine 1 wird eine Polierscheibe 2 als
Bearbeitungswerkzeug durch ein Getriebe 3 in Rotation versetzt, das durch
einen Druckluftmotor 4 angetrieben wird. In die Rotationsachse führt eine
Gaszufuhr 5, die ein ein Ventil mündet, welches im wesentlichen aus einer
Einstelleinrichtung 11, einem Rohr 6, innerhalb des Rohrs 6 angeordneter
Ventilspindel 12 und einer Entspannungsdüse 7 besteht.In the machine 1 shown in FIG. 1, a
In Figur 2 ist die Gaszufuhr 5 und das Ventil genauer dargestellt. Die
Gaszufuhr 5 mündet in das Rohr 6, dessen oberes Ende über eine
Druckscheibe 9 und eine Stopfbuchse 10 mit Hilfe der Einstelleinrichtung 11
verschlossen ist, welche als Überwurfmutter ausgebildet ist, mit welcher über
das Gewinde 8 die Ventilspindel 12 axial innerhalb des Rohrs 6 bewegt werden
kann. Die Entspannungsdüse 7 weist eine ausgangs konisch zulaufende
Öffnung 13, eine Blende 14 und eine Druckschraube 15 auf.In Figure 2, the
In Figur 3 sind die ausgangs konisch zulaufende Öffnung 13, die Blende 14,
die Druckschraube 15, das Rohr 6 und die Gaszufuhr 5 dargestellt.In FIG. 3, the opening 13 that tapers conically, the
Bei Betrieb strömt das flüssige oder überkritische CO2 aus einer
Steigrohrflasche, einem Hochdruck-, Mitteldruck- Niederdrucktank oder einer
Rohrleitung über die Gaszufuhr 5 in die Maschine 1. Dabei wird das Ventil
durchlaufen, welches die Durchflußmenge an füssigem oder überkritischem
CO2 reguliert. Das flüssige oder überkritische CO2 gelangt in das Rohr 6 und
tritt über die Entspannungsdüse 7 aus. Durch die schlagartige Entspannung
verdampft das flüssige oder überkritische CO2 und geht in die Gasphase über.
Es hat dabei eine Temperatur von -78°C, die für die Kühlung von empfindlichen
Oberflächen sehr gut geeignet ist. Charakteristisch ist dabei, daß keine
unzulässigen Druckverluste in der Gaszufuhr 5 und dem Rohr 6 auftreten.
Dadurch kann es in diesen Leitungen nicht zu einer störenden
CO2-Schneebildung kommen, die die Zufuhr von CO2 blockiert und eine
Verstopfung der Gaswege hervorruft. Die Entspannung findet lediglich im
Düsenbereich statt. During operation, the liquid or supercritical CO 2 flows from a riser bottle, a high-pressure, medium-pressure low-pressure tank or a pipeline into the machine 1 via the
Die Entspannungsdüse 7 ist unmittelbar in der Nähe des Arbeitsbereiches des
Bearbeitungswerkzeuges angeordnet. Vorzugsweise befindet sie sich in der
Rotationsachse der Polierscheibe 2. Es sind jedoch auch Anordnungen
denkbar, bei denen die Entspannungsdüse 7 in den Bereich der Polierscheibe
2 derart eingebracht ist, daß sie mit der Polierscheibe 2 eine
Rotationsbewegung vollzieht. Selbstverständlich können auch mehrere
Entspannungsdüsen 7 angebracht sein. Als Öffnung der Entspannungsdüse 7
kommen Regelkegel oder austauschbare, ausgangsseitig konisch zulaufende
Öffnungen in Frage. Es können auch Lochblenden eingesetzt werden. Bei
Einsatz eines Regelkegels kann der Gasdurchsatz der jeweilig zu lösenden
Polier- oder Schleifaufgabe angepaßt werden.The
Der Durchmesser der
Ventilspindel 12 und die lichte Weite des Rohres 6 sind so bemessen, daß das
flüssige oder überkritische CO2 sich nicht im Innern des Rohres 6 entspannt.
Die Dimensionen der Ventilspindel 12 und des Rohres 6 werden dabei
vorzugsweise so gewählt, daß der Ringspalt zwischen der Innenfläche des
Rohres 6 und der Mantelfläche der Ventilspindel 12 ca. 0,2 bis 2 mm beträgt. In
diesem Fall kann ein Druckabfall erst am Austritt des noch flüssigen oder
überkritischen CO2 aus dem Rohr 6 erfolgen und die Fließwege des flüssigen
oder überkritischen CO2 werden so sicher freigehalten.The diameter of the
Durch den Einsatz von CO2 kann auch bei der Ausgestaltung der Gaszufuhr 5
auf hochisolierte Materialien, wie sie beim Einsatz von flüssigem Stickstoff zur
Anwendung kommen, verzichtet werden. Für flüssiges oder überkritisches CO2
können flexible Kunststoffleitungen eingesetzt werden, die eine leichtere
Handhabung und größere Beweglichkeit der Maschine 1 ermöglichen. Eine
aufwendige thermische Isolierung ist nicht nötig.By using CO 2 , highly insulated materials, such as are used when using liquid nitrogen, can also be dispensed with when designing the
Für die Bearbeitung von Oberflächen, die spezielle Erfordernisse an die
Bearbeitungstemperatur stellen, ist es möglich, die Entspannungsdüse 7 mit
einem Temperaturfühler auszustatten, welcher die aktuell vorliegende
Temperatur mißt und ein Heizeinrichtung, vorzugseise eine kleine Heizwendel,
steuert, welche im Bereich der Entspannungsdüse 7 angeordnet ist. Dadurch
kann eine Temperierung der Umgebung der Entspannungsdüse 7 erfolgen.
Jedoch wird eine solche Ausführungsform eine Variante für besondere Fälle
darstellen, da der Vorteil des nunmehr verbesserten Einsatzes von CO2 gerade
darin liegt, daß es apparativ möglich ist, mit CO2 zu arbeiten, welches eine
Temperaturregelung weitgehend überflüssig macht, da das frisch verdampfte
CO2 eine Temperatur aufweist, die erfahrungsgemäß zu besonders idealen
Betriebsbedingungen führt.For the machining of surfaces that place special demands on the machining temperature, it is possible to equip the
Claims (7)
- Machine (1) for polishing and/or grinding with a machining tool executing a relative movement with respect to the workpiece, in which the machining tool is assigned means for the supply of liquid or supercritical CO2, characterized in that the means for the supply of the liquid or supercritical CO2 comprise a valve for regulating the throughflow quantity of the CO2 with an expansion nozzle (7) for the liquid or supercritical CO2, and in that the valve is arranged inside the machine.
- Machine (1) according to Claim 1, wherein the valve (8) has a pipe (6) through which there runs a valve spindle (12) whose diameter is dimensioned to be less than the clear width of the pipe (6), an orifice plate (14) being assigned to said valve spindle, in that the conically tapering expansion nozzle (7), which is to be opened and may be closed by means of the valve spindle (12), has an opening (13) broadening at the outlet, and in that the diameter of the valve spindle (12) and the clear width of the pipe (6) are dimensioned such that the liquid or supercritical CO2 does not expand in the interior of the pipe (6).
- Machine (1) according to Claim 1 or 2, characterized in that the expansion nozzle (7) is arranged directly in the vicinity of the working face of the machining tool.
- Machine (1) having a rotating, driven machining tool according to one of Claims 1 to 3, characterizet in that the means for the supply of the liquid or supercritical CO2 are arranged coaxially inside a hollow spindle carrying the machining tool.
- Machine (1) according to one of Claims 1 to 4, wherein a heating device, whose heat dissipation is controlled by a temperature sensor, is arranged in the region of the expansion nozzle (7).
- Machine (1) according to one of Claims 1 to 5, characterized in that the liquid or supercritical CO2 is supplied to the valve through a flexible plastic tube.
- Machine (1) according to one of Claims 2 to 6, characterized in that the annular gap between the inner surface of the pipe (6) and the outer surface of the valve spindle (12) is 0.2 to 2 mm.
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19608935 | 1996-03-07 | ||
DE19608935 | 1996-03-07 | ||
DE19704860A DE19704860C1 (en) | 1996-03-07 | 1997-02-10 | Machine for polishing and / or grinding |
DE19704860 | 1997-02-10 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0794036A1 EP0794036A1 (en) | 1997-09-10 |
EP0794036B1 true EP0794036B1 (en) | 2000-05-10 |
Family
ID=26023586
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97102385A Expired - Lifetime EP0794036B1 (en) | 1996-03-07 | 1997-02-14 | Machine for polishing and/or grinding |
Country Status (6)
Country | Link |
---|---|
US (1) | US5823863A (en) |
EP (1) | EP0794036B1 (en) |
AT (1) | ATE192684T1 (en) |
BR (1) | BR9701213A (en) |
CA (1) | CA2199163A1 (en) |
NO (1) | NO309512B1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19736291A1 (en) * | 1997-08-21 | 1999-02-25 | Messer Griesheim Gmbh | Device for directing compressed air and liquid carbon dioxide to machine for cooling |
DE102005034634B3 (en) * | 2005-07-25 | 2007-03-29 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Method and tool for cleaning cavities |
JP5856496B2 (en) * | 2012-01-31 | 2016-02-09 | ミネベア株式会社 | Cutting fluid supply device |
CN111705368A (en) * | 2020-06-10 | 2020-09-25 | 东华大学 | Method for preparing polypropylene fiber aggregate based on instantaneous pressure-release spinning method and application |
CN111691060B (en) * | 2020-06-10 | 2022-11-11 | 东华大学 | High polymer fiber based on instantaneous pressure-release spinning method, and preparation method and application thereof |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1952910A (en) * | 1930-11-14 | 1934-03-27 | Black & Decker Mfg Co | Polisher with reservoir |
US2635399A (en) * | 1951-04-19 | 1953-04-21 | Thompson Prod Inc | Method for grinding carbide tools |
GB1550430A (en) * | 1977-05-10 | 1979-08-15 | Henderson Diamond Tool Co Ltd | Cooling of grinding wheel dressing operations and tools for use therewith |
US4129966A (en) * | 1977-08-25 | 1978-12-19 | Ransburg Corporation | Grinder apparatus with pollution control fluid dispensing means |
US4523411A (en) * | 1982-12-20 | 1985-06-18 | Minnesota Mining And Manufacturing Company | Wet surface treating device and element therefor |
DE3607580A1 (en) * | 1986-03-07 | 1987-09-10 | Gehring Gmbh Maschf | HONEY DEVICE |
JPH02230213A (en) * | 1989-03-03 | 1990-09-12 | Canon Inc | Liquid crystal display device |
DE3910590C2 (en) | 1989-04-01 | 1997-10-16 | Messer Griesheim Gmbh | Hand polisher |
ATE106300T1 (en) * | 1989-04-01 | 1994-06-15 | Messer Griesheim Gmbh | POLISHING OR GRINDING EQUIPMENT. |
DE4222766A1 (en) * | 1992-07-10 | 1994-01-13 | Walter Fuchs | Hand-held polishing machine for painted surfaces - has water based cutting fluid fed to rotating absorbing disc rotated over painted surface |
-
1997
- 1997-02-14 AT AT97102385T patent/ATE192684T1/en not_active IP Right Cessation
- 1997-02-14 EP EP97102385A patent/EP0794036B1/en not_active Expired - Lifetime
- 1997-02-28 US US08/806,388 patent/US5823863A/en not_active Expired - Fee Related
- 1997-03-04 CA CA002199163A patent/CA2199163A1/en not_active Abandoned
- 1997-03-06 NO NO971028A patent/NO309512B1/en not_active IP Right Cessation
- 1997-03-06 BR BR9701213A patent/BR9701213A/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
MX9701640A (en) | 1997-09-30 |
NO971028L (en) | 1997-09-08 |
EP0794036A1 (en) | 1997-09-10 |
NO309512B1 (en) | 2001-02-12 |
BR9701213A (en) | 1998-11-10 |
CA2199163A1 (en) | 1997-09-07 |
ATE192684T1 (en) | 2000-05-15 |
NO971028D0 (en) | 1997-03-06 |
US5823863A (en) | 1998-10-20 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0391148B1 (en) | Polishing or grinding device | |
DE60028949T2 (en) | METHOD AND DEVICE FOR LIQUID BEAM MOLDING | |
DE69819102T2 (en) | Cooling system for tapping machine and cooling method | |
DE3787529T2 (en) | BLASTING TREATMENT. | |
EP0794036B1 (en) | Machine for polishing and/or grinding | |
EP3332679B1 (en) | Device for heating milk or milk foam | |
EP0474604A2 (en) | Apparatus for thermal plasma processing of workpiece surfaces | |
DE602005002261T2 (en) | GRINDING MACHINE AND COOLANT FEEDING METHOD THEREFOR | |
DE19704860C1 (en) | Machine for polishing and / or grinding | |
DE2635987A1 (en) | METHOD AND DEVICE FOR DRAWING GLASS FIBER | |
DE4017716C2 (en) | ||
EP0291669B1 (en) | Shower and bath cabin | |
DE69313360T2 (en) | Device for grinding drive belts | |
DE2336350A1 (en) | AUTOMATIC GRINDING DEVICE CONTROL IN PULP PRODUCTION | |
DE4422200C2 (en) | Method and device for rescheduling a surface of a perforated plate of an extruder | |
EP0222379A2 (en) | Device for spraying coating products | |
EP0625381A1 (en) | Method and device for cleaning parts of plastics processing machinery | |
DE3910590C2 (en) | Hand polisher | |
DE3910581A1 (en) | Cold-gas working device | |
EP1234889B1 (en) | Apparatus for granulating of liquid slag | |
EP0015380B1 (en) | Method of and device for lubricating the knife of a bread-cutting appliance | |
DE702485C (en) | Process for spraying liquids or dusting dusty substances by means of compressed air or other gaseous pressure media | |
DE102009033684A1 (en) | Sharpening system has grinding wheel with internal coolant supply, which has multiple internal cooling agent channels | |
DE10322991A1 (en) | Work-piece grinding method e.g. using rotary grinding disc, involves angularly displacing spraying medium to contact point on grinding surface relative to axis of rotation of grinding disc | |
DE8904022U1 (en) | Cold gas processing facility |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
RAX | Requested extension states of the european patent have changed |
Free format text: SI PAYMENT 970314 |
|
17P | Request for examination filed |
Effective date: 19980310 |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
17Q | First examination report despatched |
Effective date: 19990419 |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
AX | Request for extension of the european patent |
Free format text: SI PAYMENT 19970314 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20000510 Ref country code: FI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20000510 Ref country code: ES Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY Effective date: 20000510 |
|
REF | Corresponds to: |
Ref document number: 192684 Country of ref document: AT Date of ref document: 20000515 Kind code of ref document: T |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: GERMAN |
|
REF | Corresponds to: |
Ref document number: 59701615 Country of ref document: DE Date of ref document: 20000615 |
|
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 20000602 |
|
ITF | It: translation for a ep patent filed | ||
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20000810 Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20000810 |
|
ET | Fr: translation filed | ||
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20000811 |
|
NLV1 | Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act | ||
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20010205 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20010214 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MC Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20010228 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FD4D |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SE Payment date: 20030205 Year of fee payment: 7 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20030210 Year of fee payment: 7 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20030212 Year of fee payment: 7 Ref country code: AT Payment date: 20030212 Year of fee payment: 7 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: CH Payment date: 20030214 Year of fee payment: 7 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20030228 Year of fee payment: 7 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: BE Payment date: 20030425 Year of fee payment: 7 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20040214 Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20040214 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20040215 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20040228 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20040229 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20040229 |
|
BERE | Be: lapsed |
Owner name: *MESSER GRIESHEIM G.M.B.H. Effective date: 20040228 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20040901 |
|
EUG | Se: european patent has lapsed | ||
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20040214 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20041029 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 20050214 |