EP0446626B1 - Grinding sleeve - Google Patents

Grinding sleeve Download PDF

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Publication number
EP0446626B1
EP0446626B1 EP91101877A EP91101877A EP0446626B1 EP 0446626 B1 EP0446626 B1 EP 0446626B1 EP 91101877 A EP91101877 A EP 91101877A EP 91101877 A EP91101877 A EP 91101877A EP 0446626 B1 EP0446626 B1 EP 0446626B1
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EP
European Patent Office
Prior art keywords
grinding
sleeve
carrier sleeve
carrier
abrasive
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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
Application number
EP91101877A
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German (de)
French (fr)
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EP0446626A1 (en
Inventor
Günther Wendt
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Individual
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Individual
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D13/00—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor
    • B24D13/02—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by their periphery
    • B24D13/04—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by their periphery comprising a plurality of flaps or strips arranged around the axis

Definitions

  • the invention is directed to an abrasive sleeve according to the preamble of claim 1 (see DE-U-8523363).
  • a grinding, cleaning or satin wheel with a rigid core and a working pad arranged thereon which consists of alternately arranged, interspersed with abrasive plastic fleece lamellas and abrasive cloth lamellas, these, partially overlapping, on the Core are arranged parallel to its axis.
  • the work cushion can be attached by gluing, pressing or pouring into the plastic core.
  • the rigid core requires the formation of a work cushion in order to enable cleaning or satinizing workpieces in addition to machining.
  • the disks have diameters of over 100 mm and the ratio of core diameter to lamella width is approximately 1: 1.
  • So-called grinding sleeves differ from grinding tools of this type, which are clamped onto an elastic core when in use.
  • the outer surface of cylindrical or conical sleeves has different abrasives.
  • the known grinding sleeves are produced in the so-called winding process, in which grinding lines are spirally wound onto a cylinder or cone as the carrier material and glued to the carrier material. If the flat backing material for the abrasive layer is sufficiently thick and strong, such abrasive sleeves can also be produced without a backing sleeve by winding abrasive cloth or abrasive grains in the form of a tape on a base using the winding method on a mandrel and gluing the tape edges together.
  • the abrasive sleeves manufactured using the spiral winding process do not always prove to be sufficiently stable.
  • the seams are a weak point and can tear open.
  • DE-U-85 23 363 relates to a hollow cylinder equipped with grinding flaps projecting approximately tangentially to the lateral surface for grinding the surface of pressure rollers in a winding device for elongated products.
  • the grinding lamellae are fastened on the outside of a bandage, which is in engagement with a counter-sticking coating of the hollow cylinder outer surface via an adhesive coating attached to the inside of the bandage.
  • This grip engagement position is secured by tying the end regions of the bandage which are opposite one another in the axial direction of the hollow cylinder and are provided with eyelets.
  • the object of the invention is to provide an improved structural design of grinding sleeves, in particular one in which the risk of clogging of the grinding grains is reduced.
  • a cylindrical or conical grinding sleeve with an elastic carrier sleeve on which overlapping rectangular grinding lamellae, the edges of which extend parallel or at an angle corresponding to the slope of the cone of the carrier sleeve, to the longitudinal axis of the carrier sleeve characterized in that the carrier sleeve consists of fabric, cardboard or hard cardboard, that the grinding flaps are glued to the outer surface of the carrier sleeve and that the ratio of the sleeve diameter to the width of the grinding flaps is a maximum of 3: 1.
  • the width of the grinding flaps is the distance between the outer edge of the grinding flaps and the outer surface of the carrier sleeve. As the length of the grinding flaps is the extension parallel to the longitudinal axis of the carrier sleeve.
  • the abrasive flaps consist of abrasive grains bound on a base, for example commercially available abrasive cloth or abrasive cloth.
  • the grit of the actual grinding material depends on the intended use of the grinding sleeves.
  • the lamellae are radially glued onto the outside surface of the sleeve in the center.
  • the grinding lamellae extend tangentially to the surface of the carrier sleeve.
  • the grinding flaps can also be arranged at a larger angle tangentially to the surface of the carrier sleeve.
  • the grinding lamellae extend outwards from the surface of the carrier sleeve at an angle ⁇ to the tangential surface of 0-30 °.
  • Suitable abrasive grains for the abrasive flaps are aluminum oxide, zirconium oxide, silicon dioxide, corundum, silicon carbide or other carbides, metal nitrides, for example cubic boron nitride, which are bonded to the backing in a known manner.
  • the grinding flaps are preferably 5-25 mm wide. They usually have a length such that they extend over the entire width of the carrier sleeve.
  • the width of the grinding lamella depends on the outside diameter of the sleeve, the grinding lamella becoming wider as the outside diameter increases.
  • the ratio of sleeve diameter: lamella width is a maximum of 3: 1.
  • the sleeve diameter can be between 20 and 100 mm.
  • the elastic carrier sleeve is made of fabric, cardboard or hard fibers and has a relatively thin wall and can be cylindrical or conical.
  • the grinding flaps are glued to the outer surface of the carrier sleeve with a suitable adhesive.
  • Single- or multi-component adhesives that provide good adhesion both with the materials of the carrier sleeve and with the grinding flaps are commercially available.
  • the grinding surface formed according to the invention from grinding flaps in comparison to the known grinding sleeves has the advantage that a larger grinding surface is available and, because of the overlapping grinding flaps, an unused piece of fresh abrasive surface of an underlying grinding flap is always available for grinding.
  • the anchoring of the grinding flaps on the outer surface of the carrier sleeve is surprisingly firm, so that the grinding sleeves according to the invention meet the safety requirements even at high speeds of rotation.
  • the abrasive sleeves are pushed onto an elastic base body provided with a drive shaft, which is designed such that it expands somewhat when it rotates under the action and thereby tightens the sleeve.
  • Fig. 1 shows schematically a side view of the embodiment of the grinding sleeve according to the invention, in which the grinding flaps 1 are fastened overlapping on the outer surface on a carrier sleeve 2.
  • the angle ⁇ to the tangential surface is shown schematically in the figure.
  • the grinding lamellae can thus be arranged such that they extend in the tangential surface or are glued to the outside at an angle ⁇ extending from the tangential surface.
  • Fig. 2 shows schematically a sleeve according to the invention in view of the grinding surface, with no grinding flaps 1 being shown on part of the carrier sleeve 1.
  • the abrasive layer from the individual abrasive flaps 1 is shown schematically in a schematic cross-sectional illustration.
  • Fig. 3 shows a grinding sleeve according to the invention with a conical carrier sleeve 2, on which the grinding flaps 1 are glued in a top view. Also in this representation, the sleeve, the abrasive layer is schematically indicated in cross section on the underside.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Description

Die Erfindung richtet sich auf eine Schleifhülse gemäß dem Oberbegriff des Anspruchs 1 (siehe DE-U- 8523363).The invention is directed to an abrasive sleeve according to the preamble of claim 1 (see DE-U-8523363).

Aus DE-U 19 86 971 ist eine Schleif-, Putz- oder Satinierscheibe mit starrem Kern und einem darauf angeordneten Arbeitspolster bekannt, das aus wechselweise angeordneten, mit Schleifmittel durchsetzten Kunststoffvlies-Lamellen und Schleifgewebelamellen besteht, wobei diese, sich teilweise überlappend, auf dem Kern parallel zu dessen Achse angeordnet sind. Die Befestigung des Arbeitspolsters kann durch Kleben, Einpressen oder Eingießen in den Kunststoffkern erfolgen. Der starre Kern erfordert die Ausbildung eines Arbeitspolsters um neben dem spanabhebenden Schleifen Putzen oder Satinieren von Werkstücken zu ermöglichen. Die Scheiben haben in der Praxis Durchmesser von über 100 mm und das Verhältnis von Kerndurchmesser zu Lamellenbreite ist etwa 1:1.From DE-U 19 86 971 a grinding, cleaning or satin wheel with a rigid core and a working pad arranged thereon is known, which consists of alternately arranged, interspersed with abrasive plastic fleece lamellas and abrasive cloth lamellas, these, partially overlapping, on the Core are arranged parallel to its axis. The work cushion can be attached by gluing, pressing or pouring into the plastic core. The rigid core requires the formation of a work cushion in order to enable cleaning or satinizing workpieces in addition to machining. In practice, the disks have diameters of over 100 mm and the ratio of core diameter to lamella width is approximately 1: 1.

Von derartigen Schleifwerkzeugen unterscheiden sich sogenannte Schleifhülsen, die bei Gebrauch auf einen elastischen Kern aufgespannt werden. Die Außenoberfläche von zylindrischen oder konischen Hülsen weist je nach Anwendung Schleifmittel unterschiedlicher Körnung auf.So-called grinding sleeves differ from grinding tools of this type, which are clamped onto an elastic core when in use. Depending on the application, the outer surface of cylindrical or conical sleeves has different abrasives.

Die bekannten Schleifhülsen werden im sogenannten Wickelverfahren hergestellt, bei dem auf einen Zylinder oder Konus als Trägermaterial Schleifleinen spiralförmig aufgewickelt und mit dem Trägermaterial verklebt werden. Ist das flächenhafte Trägermaterial für die Schleifmittelschicht ausreichend dick und fest, können derartige Schleifhülsen auch ohne Trägerhülse hergestellt werden, indem Schleifleinen oder auf eine Unterlage aufgebrachte Schleifkörner in Bandform nach dem Wickelverfahren auf einen Dorn aufgewickelt und die Bandkanten miteinander verklebt werden.The known grinding sleeves are produced in the so-called winding process, in which grinding lines are spirally wound onto a cylinder or cone as the carrier material and glued to the carrier material. If the flat backing material for the abrasive layer is sufficiently thick and strong, such abrasive sleeves can also be produced without a backing sleeve by winding abrasive cloth or abrasive grains in the form of a tape on a base using the winding method on a mandrel and gluing the tape edges together.

Bei hohen Belastungen erweisen sich die nach dem Spiralwickelverfahren hergestellten Schleifhülsen nicht immer als ausreichend stabil. Die Nahtstellen sind ein Schwachpunkt und können aufreißen.At high loads, the abrasive sleeves manufactured using the spiral winding process do not always prove to be sufficiently stable. The seams are a weak point and can tear open.

DE-U-85 23 363 betrifft einen mit etwa tangential zur Mantelfläche abstehenden Schleiflamellen ausgestatteten Hohlzylinder zum Schleifen der Oberfläche von Andrückrollen in einer Aufwickelvorrichtung für langgestreckte Produkte. Die Schleiflamellen sind dabei auf der Außenseite einer Bandage befestigt, die über einen an der Innenseite der Bandage angebrachten Haftbelag mit einem Gegenhaftbelag der Hohlzylinder-Mantelfläche in Eingriff steht. Diese Hafteingriffsstellung ist durch Verschnüren der sich in Achsrichtung des Hohlzylinders einander gegenüberliegenden mit Ösen ausgestatteten Endbereiche der Bandage gesichert.DE-U-85 23 363 relates to a hollow cylinder equipped with grinding flaps projecting approximately tangentially to the lateral surface for grinding the surface of pressure rollers in a winding device for elongated products. The grinding lamellae are fastened on the outside of a bandage, which is in engagement with a counter-sticking coating of the hollow cylinder outer surface via an adhesive coating attached to the inside of the bandage. This grip engagement position is secured by tying the end regions of the bandage which are opposite one another in the axial direction of the hollow cylinder and are provided with eyelets.

Aufgabe der Erfindung ist es, eine verbesserte konstruktive Gestaltung von Schleifhülsen zu schaffen, insbesondere eine solche, bei der das Risiko des Zusetzens der Schleifkörner verringert ist.The object of the invention is to provide an improved structural design of grinding sleeves, in particular one in which the risk of clogging of the grinding grains is reduced.

Diese Aufgabe wird gelöst durch eine zylindrische oder konische Schleifhülse mit einer elastischen Trägerhülse, auf der sich dachziegelartig überlappende, rechteckige Schleiflamellen, deren Kanten sich parallel oder unter einem Winkel, der der Steigung des Konus der Trägerhülse entspricht, zur Längsachse der Trägerhülse erstrecken, angeordnet sind, dadurch gekennzeichnet, daß die Trägerhülse aus Gewebe, Karton oder Hartpappe besteht, daß die Schleiflamellen auf die Außenfläche der Trägerhülse aufgeklebt sind und daß das Verhältnis des Hülsendurchmessers zur Breite der Schleiflamellen maximal 3:1 beträgt.This object is achieved by a cylindrical or conical grinding sleeve with an elastic carrier sleeve on which overlapping rectangular grinding lamellae, the edges of which extend parallel or at an angle corresponding to the slope of the cone of the carrier sleeve, to the longitudinal axis of the carrier sleeve , characterized in that the carrier sleeve consists of fabric, cardboard or hard cardboard, that the grinding flaps are glued to the outer surface of the carrier sleeve and that the ratio of the sleeve diameter to the width of the grinding flaps is a maximum of 3: 1.

Als Breite der Schleiflamellen wird der Abstand der Außenkante der Schleiflamellen von der Außenoberfläche der Trägerhülse bezeichnet. Als Länge der Schleiflamellen wird die Ausdehnung parallel zur Längsachse der Trägerhülse bezeichnet.The width of the grinding flaps is the distance between the outer edge of the grinding flaps and the outer surface of the carrier sleeve. As the length of the grinding flaps is the extension parallel to the longitudinal axis of the carrier sleeve.

Die Schleiflamellen bestehen aus auf einer Unterlage gebundenen Schleifkörnern, beispielsweise handelsüblichen Schleifleinen oder Schleifgewebe. Die Körnung des eigentlichen Schleifmaterials richtet sich nach dem vorgesehenen Verwendungszweck der Schleifhülsen.The abrasive flaps consist of abrasive grains bound on a base, for example commercially available abrasive cloth or abrasive cloth. The grit of the actual grinding material depends on the intended use of the grinding sleeves.

Zwischen den Schleiflamellen sind keine anderen Lamellen, beispielsweise mit Schleifmittel durchsetzte Kunststoffvlies-Lamellen, vorhanden.There are no other lamellae between the grinding lamellae, for example plastic fleece lamellas interspersed with abrasive.

Die Lamellen sind außen mittig strahlenförmig auf der Außenoberfläche der Hülse aufgeklebt. Bei einer Ausführungsform der erfindungsgemäßen Schleifhülse erstrecken sich die Schleiflamellen tangential zur Oberfläche der Trägerhülse. Die Schleiflamellen können aber auch unter einem größeren Winkel tangential zur Oberfläche der Trägerhülse angeordnet sein. Bei einer solchen Ausführungsform erstrecken sich die Schleiflamellen von der Oberfläche der Trägerhülse aus unter einem Winkel α zur Tangentialfläche von 0-30° nach außen.The lamellae are radially glued onto the outside surface of the sleeve in the center. In one embodiment of the grinding sleeve according to the invention, the grinding lamellae extend tangentially to the surface of the carrier sleeve. The grinding flaps can also be arranged at a larger angle tangentially to the surface of the carrier sleeve. In such an embodiment, the grinding lamellae extend outwards from the surface of the carrier sleeve at an angle α to the tangential surface of 0-30 °.

Geeignete Schleifkörner für die Schleiflamellen sind Aluminiumoxid, Zirkonoxid, Siliciumdioxid, Korund, Siliciumkarbid oder andere Karbide, Metallnitride, beispielsweise kubisches Bornitrid, die in bekannter Weise an die Unterlage gebunden sind.Suitable abrasive grains for the abrasive flaps are aluminum oxide, zirconium oxide, silicon dioxide, corundum, silicon carbide or other carbides, metal nitrides, for example cubic boron nitride, which are bonded to the backing in a known manner.

Die Schleiflamellen sind vorzugsweise 5-25 mm breit. Sie weisen in der Regel eine solche Länge auf, daß sie sich über die gesamte Breite der Trägerhülse erstrecken. Die Breite der Schleiflamellen richtet sich nach dem Außendurchmesser der Hülse, wobei die Schleiflamellen mit steigendem Außendurchmesser breiter werden. Das Verhältnis von Hülsendurchmesser:Lamellenbreite beträgt maximal 3:1. Der Hülsendurchmesser kann zwischen 20 und 100 mm betragen.The grinding flaps are preferably 5-25 mm wide. They usually have a length such that they extend over the entire width of the carrier sleeve. The width of the grinding lamella depends on the outside diameter of the sleeve, the grinding lamella becoming wider as the outside diameter increases. The ratio of sleeve diameter: lamella width is a maximum of 3: 1. The sleeve diameter can be between 20 and 100 mm.

Die elastische Trägerhülse ist aus Gewebe, Karton oder Hartfasern und hat eine relativ dünne Wand und kann zylindrisch oder konisch ausgebildet sein. Auf die Außenfläche der Trägerhülse werden die Schleiflamellen mit einem geeigneten Klebstoff aufgeklebt. Ein- oder Mehrkomponentenklebstoffe, die eine gute Haftung sowohl mit den Materialien der Trägerhülse als auch mit den Schleiflamellen ergeben, sind kommerziell erhältlich.The elastic carrier sleeve is made of fabric, cardboard or hard fibers and has a relatively thin wall and can be cylindrical or conical. The grinding flaps are glued to the outer surface of the carrier sleeve with a suitable adhesive. Single- or multi-component adhesives that provide good adhesion both with the materials of the carrier sleeve and with the grinding flaps are commercially available.

Die im Vergleich zu den bekannten Schleifhülsen erfindungsgemäß aus Schleiflamellen ausgebildet Schleiffläche hat den Vorteil, daß eine größere Schleiffläche zur Verfügung steht und durch die Abnutzung der sich überlappenden Schleiflamellen stets ein unverbrauchtes Stück frischer Schleifmittelfläche einer darunterliegenden Schleiflamelle für das Schleifen zur Verfügung steht.The grinding surface formed according to the invention from grinding flaps in comparison to the known grinding sleeves has the advantage that a larger grinding surface is available and, because of the overlapping grinding flaps, an unused piece of fresh abrasive surface of an underlying grinding flap is always available for grinding.

Die Verankerung der Schleiflamellen auf der Außenoberfläche der Trägerhülse ist überraschend fest, so daß die erfindungsgemäßen Schleifhülsen den Sicherheitsanforderungen auch bei hohen Umdrehungsgeschwindigkeiten genügen.The anchoring of the grinding flaps on the outer surface of the carrier sleeve is surprisingly firm, so that the grinding sleeves according to the invention meet the safety requirements even at high speeds of rotation.

Bei Gebrauch werden die Schleifhülsen auf einen mit einer Antriebswelle versehenen elastischen Grundkörper aufgeschoben, der so ausgebildet ist, daß er sich bei Rotation unter der Einwirkung etwas aufweitet und dadurch die Hülse festspannt.In use, the abrasive sleeves are pushed onto an elastic base body provided with a drive shaft, which is designed such that it expands somewhat when it rotates under the action and thereby tightens the sleeve.

Die Erfindung wird nun anhand der Figuren noch näher erläutert.The invention will now be explained in more detail with reference to the figures.

Fig. 1 zeigt schematisch eine Seitenansicht der erfindungsgemäßen Ausbildung der Schleifhülse, bei der auf einer Trägerhülse 2 die Schleiflamellen 1 sich überlappend auf der Außenoberfläche befestigt sind. Der Winkel α zur Tangentialfläche ist in der Figur schematisch wiedergegeben. Erfindungsgemäß können die Schleiflamellen also so angeordnet werden, daß sie sich in der Tangentialfläche erstrecken oder unter einem Winkel α von der Tangentialfläche nach außen verlaufend aufgeklebt sind.Fig. 1 shows schematically a side view of the embodiment of the grinding sleeve according to the invention, in which the grinding flaps 1 are fastened overlapping on the outer surface on a carrier sleeve 2. The angle α to the tangential surface is shown schematically in the figure. According to the invention, the grinding lamellae can thus be arranged such that they extend in the tangential surface or are glued to the outside at an angle α extending from the tangential surface.

Fig. 2 zeigt schematisch eine erfindungsgemäße Hülse in Sicht auf die Schleiffläche, wobei auf einem Teil der Trägerhülse 1 keine Schleiflamellen 1 eingezeichnet sind. Im unteren Teil der Fig. 2 ist schematisch die Schleifmittelschicht aus den einzelnen Schleiflamellen 1 in einer schematischen Querschnittsdarstellung wiedergegeben.Fig. 2 shows schematically a sleeve according to the invention in view of the grinding surface, with no grinding flaps 1 being shown on part of the carrier sleeve 1. In the lower part of FIG. 2, the abrasive layer from the individual abrasive flaps 1 is shown schematically in a schematic cross-sectional illustration.

Fig. 3 zeigt eine erfindungsgemäße Schleifhülse mit einer konischen Trägerhülse 2, auf der die Schleiflamellen 1 aufgeklebt sind in einer Aufsicht. Auch bei dieser Darstellung ist auf der Unterseite die Hülse die Schleifmittelschicht schematisch im Querschnitt angegeben.Fig. 3 shows a grinding sleeve according to the invention with a conical carrier sleeve 2, on which the grinding flaps 1 are glued in a top view. Also in this representation, the sleeve, the abrasive layer is schematically indicated in cross section on the underside.

Claims (4)

  1. A cylindrical or conical grinding sleeve with an elastic carrier sleeve (2), on which are arranged rectangular grinding plates (1), which overlap in the manner of roof tiles and whose edges extend parallel to the longitudinal axis of the carrier sleeve (2) or at an angle to the said axis corresponding to the gradient of the cone of the carrier sleeve (2), characterised in that the carrier sleeve (2) is formed by a fabric, cardboard or hardboard, the grinding plates (1) are bonded to the outer surface of the carrier sleeve and the ratio of the sleeve diameter to the width of the grinding plates (1) is at the most 3 : 1.
  2. A grinding sleeve according to claim 1, characterised in that the grinding plates (1) extend tangentially to the surface of the carrier sleeve (2).
  3. A grinding sleeve according to claim 2, characterised in that the grinding plates (1) extend outwards from the surface of the carrier sleeve (2) at an angle of 0 - 30° to the tangential surface.
  4. A grinding sleeve according to each of claims 1 to 3, characterised in that the grinding plates have a width of 5 - 25 mm and such a length that they extend over the entire width of the carrier sleeve (2).
EP91101877A 1990-03-13 1991-02-11 Grinding sleeve Expired - Lifetime EP0446626B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4007928A DE4007928A1 (en) 1990-03-13 1990-03-13 GRINDING SLEEVE
DE4007928 1990-03-13

Publications (2)

Publication Number Publication Date
EP0446626A1 EP0446626A1 (en) 1991-09-18
EP0446626B1 true EP0446626B1 (en) 1994-08-10

Family

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Application Number Title Priority Date Filing Date
EP91101877A Expired - Lifetime EP0446626B1 (en) 1990-03-13 1991-02-11 Grinding sleeve

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EP (1) EP0446626B1 (en)
DE (2) DE4007928A1 (en)
ES (1) ES2060214T3 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29517989U1 (en) * 1995-11-14 1996-01-18 Heinrich Lippert GmbH, 74925 Epfenbach Tool for mechanical surface treatment
US5722881A (en) * 1996-08-30 1998-03-03 Merit Abrasive Products, Inc. Flap wheel
US5871399A (en) * 1996-08-30 1999-02-16 Merit Abrasive Products, Inc. Flap wheel
DE19812515A1 (en) * 1998-03-21 1999-09-23 M & F Entw & Patentverwertungs Grinding tool with blades and symmetrical rotational axle

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1986971U (en) * 1968-06-06 Kemper Kontakt Gert Kemper 5600 Wuppertal Vohwmkel Abrasive plaster or satimer disc
US2774200A (en) * 1955-10-10 1956-12-18 Block Aleck Abrasive polishing device
GB938223A (en) * 1959-10-30 1963-10-02 Rexall Drug Chemical Abrasive devices
DE8523363U1 (en) * 1985-08-14 1985-09-26 Kemper-Kontakt Gert Kemper GmbH & Co KG, 5600 Wuppertal Hollow cylinder equipped with grinding lamellas
DE8903423U1 (en) * 1989-03-18 1989-05-03 Lukas-Erzett Vereinigte Schleif- und Fräswerkzeugfabriken GmbH & Co KG, 5250 Engelskirchen Grinding flap disc

Also Published As

Publication number Publication date
DE4007928A1 (en) 1991-09-19
EP0446626A1 (en) 1991-09-18
ES2060214T3 (en) 1994-11-16
DE59102462D1 (en) 1994-09-15
DE4007928C2 (en) 1992-07-30

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