EP1105252B1 - Tool holder - Google Patents

Tool holder Download PDF

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Publication number
EP1105252B1
EP1105252B1 EP00943868A EP00943868A EP1105252B1 EP 1105252 B1 EP1105252 B1 EP 1105252B1 EP 00943868 A EP00943868 A EP 00943868A EP 00943868 A EP00943868 A EP 00943868A EP 1105252 B1 EP1105252 B1 EP 1105252B1
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EP
European Patent Office
Prior art keywords
grinding
tool carrier
tool
carrier
natural fibers
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
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EP00943868A
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German (de)
French (fr)
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EP1105252A1 (en
Inventor
Gerd Eisenblätter
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Gerd Eisenblaetter GmbH
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Gerd Eisenblaetter GmbH
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Publication date
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Priority to EP06016758.2A priority Critical patent/EP1741516B1/en
Publication of EP1105252A1 publication Critical patent/EP1105252A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D9/00—Wheels or drums supporting in exchangeable arrangement a layer of flexible abrasive material, e.g. sandpaper
    • B24D9/003—Wheels having flaps of flexible abrasive material supported by a flexible material
    • 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
    • B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
    • B24B21/18—Accessories
    • 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D9/00—Wheels or drums supporting in exchangeable arrangement a layer of flexible abrasive material, e.g. sandpaper
    • B24D9/04—Rigid drums for carrying flexible material

Definitions

  • the invention relates to a, reinforced with natural fibers, molded by injection molding of granules, rotationally symmetric, rigid and rigid tool carrier according to the preamble of the independent claim.
  • A reinforced with natural fibers, molded by injection molding of granules, rotationally symmetric, rigid and flexurally stiff tool carrier whose fiber reinforcement is solidified by a binder is detachable with a rotary drive. connectable and also has a tool support surface for receiving at least one grinding and / or polishing element.
  • a material processing tool with a natural fiber reinforced, rotationally symmetrical, rigid and rigid tool carrier which is detachably connectable to a rotary drive and has a tool support surface, at least one grinding and / or polishing element is received on the tool support surface.
  • the rotationally symmetrical tool carrier can, for. B. be a circular disc or a cylindrical roller.
  • a material processing tool may be, for example, fan grinders, fan sanding brushes or rollers, roughing wheels, cutting wheels, polishing wheels, etc.
  • Such materials processing tools find their applications everywhere where surfaces of any material to be edited, smoothed, polished and / or modeled. More general formulated there, where must be removed from a workpiece material. These tools are wearing parts that are manufactured and consumed in large quantities.
  • abrasive and / or polishing elements may be, for example, felt polishing body, abrasive or polishing fleece, abrasive cloth and the like.
  • a core idea of the invention can be seen in the fact that the tool carrier of the material processing tool instead, as hitherto made of plastic, of natural materials, and thus, substantially part, made of renewable resources.
  • the tool carriers made of materials with natural fibers have very good thermal and mechanical properties.
  • Another positive aspect of the invention is that the natural fiber materials are now relatively inexpensive to obtain and process.
  • binders are suitable.
  • Organic or inorganic binders can be used. Examples are phenolic resins, styrene resins, polycarbonates or polyolefins, in particular polypropylene.
  • binders are particularly unproblematic.
  • cellulosic materials can be used as binders.
  • the tool carrier is made of a granulate which has the constituents natural fibers and binders, for example polypropylene.
  • the production with granules is particularly simple and inexpensive.
  • the granules are, as known from plastic injection molding technology, melted and injected into appropriate molds, wherein in a particularly suitable mixture, the granules each consist of 50% natural fibers and polypropylene.
  • the grinding and / or polishing element may also be at least partially made of natural fibers. This is in turn with regard to the environmentally sound disposal of the used material processing tool advantage.
  • FIG. 1 shows a flap wheel 1 which consists of a tool carrier 7 and fan-shaped grinding elements 5 (grinding blades).
  • the tool carrier 7 also has a circular shape, wherein in the view shown here, the outer edge of the tool carrier 7 is visible only in a small angle segment. In the circle center of the tool carrier 7, an opening 3 is incorporated, which serves to connect the flapper disc 1 with a rotary drive.
  • the tool carrier 7 is made of a hemp / polypropylene granules.
  • the natural fibers 31 are shown schematically in FIG.
  • the tool carrier 7 has a tool support surface 9, on which a plurality of grinding elements 5 is arranged like a fan. In a small angular segment, however, the grinding elements 5 are omitted for purposes of illustration.
  • FIG. 2 shows a so-called mop wheel 11 which has a roller-shaped tool carrier 15 with radially arranged grinding elements 17 (grinding lamellae).
  • an axis 19 is used in the middle in the illustrated example, via which the mop 11 can be connected to a drive.
  • the tool support surface 21 is in this embodiment, the lateral surface of the cylinder, wherein the grinding elements 17 are mounted on the lateral surface and project radially from the tool carrier 15.
  • the tool carrier 15 is also made of a Natural fiber / binder granules made.
  • the grinding elements 17 are omitted for illustrative purposes to illustrate the tool support surface 21.
  • a partial area is shown broken up and the natural fibers 31 are schematically indicated.
  • FIG. 3 shows a roller-like trained tool carrier 23, on the tool support surface 25 of which an endless grinding or polishing belt unrolls during operation.
  • the tool carrier 23 has an axial opening 29 which serves to connect to a rotary drive (not shown).
  • the abrasive element, i. H. the endless abrasive belt 27 of the tool support surface 25 is not received as in the embodiments shown in Figure 1 and Figure 2 by a Stoffschluß- but by a frictional connection.
  • the grinding blades 5, 17 of the examples according to FIGS. 1 and 2 consist of a fabric of natural fibers such as hemp or flax, which is occupied on the working side with abrasive grain.
  • the abrasive cloth is impregnated in a manner known per se, for example phenolic resins, and e.g. sprayed with urea, so that a good adhesion of the abrasive grain is given.
  • the abrasive belt 27 according to the example of FIG. 3 also consists of a fabric of natural fibers with an abrasive grain occupancy.
  • the grinding tool comprises a disc-shaped tool carrier 10, a separate tissue carrier 30 which can be fastened detachably on the tool carrier 10 and radially oriented grinding lamellae 16 mounted thereon.
  • Base material for tool carrier 10, tissue carrier 30 and abrasive lamellae 16 are each natural fibers that are processed and adapted differently depending on the purpose.
  • micro hooks 12 which are also referred to as Velcro hooks. They interact with a support 26 of loose threads as so-called Velcro, so that the fabric support 30 can be easily attached to the tool carrier or removed from it.
  • the natural fibers are provided with an impregnation, which improves the adhesive bond with the grinding blades 16.
  • the tissue carrier 30 occupied by abrasive lamellae 16 is thus an article which can be replaced after the wear of the abrasive lamellae 16 by a new tissue carrier occupied by unconsumable abrasive lamellae 16, while the tool carrier 10 can be retained for the conservation of resources.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)

Abstract

A fiber reinforced rotationally symmetric tool carrier is releasably connected to a rotational drive, and has a tool support surface (9) for at least one grinding and/or polishing element (5). The fiber reinforcement consists at least partially of natural fibers (31).

Description

Die Erfindung betrifft einen, mit Naturfasern verstärkten, mittels Spritzgusstechnik aus Granulat geformten, rotationssymmetrischen, starren und biegesteifen Werkzeugträger nach dem Oberbegriff des unabhängigen Anspruchs.The invention relates to a, reinforced with natural fibers, molded by injection molding of granules, rotationally symmetric, rigid and rigid tool carrier according to the preamble of the independent claim.

Ein, mit Naturfasern verstärkter, mittels Spritzgusstechnik aus Granulat geformter, rotationssymmetrischer, starrer und biegsteifer Werkzeugträger, dessen Faserverstärkung durch ein Bindemittel verfestigt ist, ist lösbar mit einem Drehantrieb. verbindbar und weist außerdem eine Werkzeugauflagefläche zur Aufnahme von mindestens einem Schleif- und/ oder Polierelement auf.A, reinforced with natural fibers, molded by injection molding of granules, rotationally symmetric, rigid and flexurally stiff tool carrier whose fiber reinforcement is solidified by a binder is detachable with a rotary drive. connectable and also has a tool support surface for receiving at least one grinding and / or polishing element.

Bei einem Materialbearbeitungswerkzeug mit einem naturfaserverstärkten, rotationssymmetrischen, starren und biegesteifen Werkzeugträger, der lösbar mit einem Drehantrieb verbindbar ist und eine Werkzeugauflagefläche aufweist, ist mindestens ein Schleif- und/ oder Polierelement auf der Werkzeugauflagefläche aufgenommen.In a material processing tool with a natural fiber reinforced, rotationally symmetrical, rigid and rigid tool carrier, which is detachably connectable to a rotary drive and has a tool support surface, at least one grinding and / or polishing element is received on the tool support surface.

Der rotationssymmetrische Werkzeugträger kann z. B. eine kreisförmige Scheibe oder eine zylinderförmige Walze sein.The rotationally symmetrical tool carrier can, for. B. be a circular disc or a cylindrical roller.

Bei einem Materialbearbeitungswerkzeug kann es sich beispielsweise um Fächerschleifer, Fächerschleifbürsten oder -walzen, Schruppschleifscheiben, Trennscheiben, Polierscheiben usw. handeln.A material processing tool may be, for example, fan grinders, fan sanding brushes or rollers, roughing wheels, cutting wheels, polishing wheels, etc.

Derartige Materialbearbeitungswerkzeuge finden Ihre Einsatzgebiete überall dort, wo Oberflächen von beliebigen Materialien bearbeitet, geglättet, poliert und/ oder modelliert werden sollen. Allgemeiner formuliert also dort, wo von einem Werkstück Material abgenommen werden muss. Es handelt sich bei diesen Werkzeugen um Verschleißteile, die in hohen Stückzahlen gefertigt und verbraucht werden.Such materials processing tools find their applications everywhere where surfaces of any material to be edited, smoothed, polished and / or modeled. More general formulated there, where must be removed from a workpiece material. These tools are wearing parts that are manufactured and consumed in large quantities.

Hinreichend bekannt sind Materialbearbeitungswerkzeuge, die aus einem rotationssymmetrischen Werkzeugträger bestehen, auf dem Schleif- und/ oder Polierelemente aufgebracht sind. Bei den Schleifund/ oder Polierelementen kann es sich beispielsweise um Filzpolierkörper, Schleif- oder Poliervlies, Schleifgewebe und ähnliches handeln.Well-known are material processing tools that consist of a rotationally symmetrical tool carrier, are applied to the grinding and / or polishing. The abrasive and / or polishing elements may be, for example, felt polishing body, abrasive or polishing fleece, abrasive cloth and the like.

Bei den bekannten Materialbearbeitungswerkzeugen ist der Werkzeugträger häufig in kompakter Weise starr und biegesteif aus Kunststoff gefertigt, wobei auch Faserverstärkungen, beispielsweise Glasfaserverstärkungen, zum Einsatz kommen. Grundsätzlich ist auch die Verwendung von Naturfasern zur Verstärkung von Schleifwerkzeugen bekannt. In US 5849646 werden zur Faserverstärkung, neben Kunstfasern, auch relativ weiche Naturfasern, wie Wolle oder Baumwolle genannt. Auch für aufgeschäumte, poröse Schleifwerkzeuge werden in GB 951450 beispielsweise Sisalfasern zur Verstärkung vorgeschlagen. In flexiblen Schleifscheiben (US 3498010) und anderen flexiblen Schleifgeräten (US 3449871) werden teilweise Gewebe aus Hanffasern oder Flachsfasern verwendet.In the known material processing tools of the tool carrier is often made in a compact manner rigid and rigid plastic, with fiber reinforcements, such as glass fiber reinforcements are used. Basically, the use of natural fibers for reinforcing grinding tools is known. In US 5849646 are for fiber reinforcement, in addition to synthetic fibers, also called relatively soft natural fibers, such as wool or cotton. For foamed, porous grinding tools, for example, sisal fibers are proposed for reinforcement in GB 951450. In flexible grinding wheels (US Pat. No. 3,489,010) and other flexible grinding devices (US Pat. No. 3,449,871), hemp fibers or flax fibers are sometimes used.

Beim Einsatz solcher Materialbearbeitungswerkzeuge kann es aufgrund der anfallenden Reibungswärme zu beträchtlichen Temperaturanstiegen kommen. Dadurch erhöht sich auch die Temperatur des Werkzeugträgers, wodurch dessen Festigkeit und damit dessen mechanische Belastbarkeit vermindert wird.When using such material processing tools, it can come to considerable increases in temperature due to the resulting frictional heat. This also increases the temperature of the tool carrier, whereby its strength and thus its mechanical strength is reduced.

Vor diesem Hintergrund ist es Aufgabe der vorliegenden Erfindung, den eingangs genannten Gegenstand anzugeben, welcher bei einfacher Herstellung günstige mechanische und thermische Eigenschaften aufweist und darüber hinaus in unproblematischer Weise entsorgbar ist.Against this background, it is an object of the present invention to provide the above-mentioned object, which has favorable mechanical and thermal properties with simple production and is also disposable in an unproblematic manner.

Diese Aufgabe wird mit einer Vorrichtung gemäß Anspruch 1 gelöst.This object is achieved with a device according to claim 1.

Ein Kerngedanke der Erfindung kann darin gesehen werden, dass der Werkzeugträger des Materialbearbeitungswerkzeugs statt, wie bisher aus Kunststoff, aus Naturstoffen, und damit, im wesentlichen Teil, aus nachwachsenden Rohstoffen hergestellt ist.A core idea of the invention can be seen in the fact that the tool carrier of the material processing tool instead, as hitherto made of plastic, of natural materials, and thus, substantially part, made of renewable resources.

Man erreicht dadurch zunächst eine deutlich unproblematischere Entsorgung. Beispielsweise ist die Kohlendioxid-Bilanz bei Verbrennung durch die Benutzung nachwachsender Rohstoffe praktisch ausgeglichen. Darüber hinaus sind andere Entsorgungsmöglichkeiten wie beispielsweise Kompostierung möglich.This initially achieves a much less problematic disposal. For example, the carbon dioxide balance when burned by the use of renewable resources is virtually balanced. In addition, other disposal options such as composting are possible.

Es hat sich bei der Erfindung überraschend gezeigt, dass die aus Werkstoffen mit Naturfasern hergestellten Werkzeugträger sehr gute thermische und mechanische Eigenschaften aufweisen. Ein weiterer positiver Aspekt der Erfindung ist, dass die Naturfasermaterialien heute relativ kostengünstig erhältlich und verarbeitbar sind.It has surprisingly been found in the invention that the tool carriers made of materials with natural fibers have very good thermal and mechanical properties. Another positive aspect of the invention is that the natural fiber materials are now relatively inexpensive to obtain and process.

Besonders gute mechanische und thermische Eigenschaften erhält der Werkzeugträger, wenn die Faserverstärkung durch Bindemittel verfestigt ist. Dabei sind ein- oder mehrkomponentige Bindemittel geeignet. Es können organische oder anorganische Bindemittel verwendet werden. Beispiele sind Phenolharze, Styrolharze, Polycarbonate oder Polyolefine, wie insbesondere Polypropylen. Ist der Werkzeugträger vollständig aus Naturstoffen hergestellt gestaltet sich die Entsorgung besonders unproblematisch. Als Bindemittel können hier beispielsweise Cellulosematerialien eingesetzt sein.Particularly good mechanical and thermal properties of the tool carrier is obtained when the fiber reinforcement is solidified by binder. One or more component binders are suitable. Organic or inorganic binders can be used. Examples are phenolic resins, styrene resins, polycarbonates or polyolefins, in particular polypropylene. If the tool carrier is completely made of natural materials, disposal is particularly unproblematic. For example, cellulosic materials can be used as binders.

Diese Materialien werden heute wieder in größeren Mengen landwirtschaftlich produziert, sind daher entsprechend kostengünstig und weisen außerdem günstige Verarbeitungs- und Festigkeitseigenschaften auf.These materials are now produced again in large quantities agriculturally, are therefore correspondingly inexpensive and also have favorable processing and strength properties.

Der Werkzeugträger ist aus einem Granulat hergestellt, welches die Bestandteile Naturfasern und Bindemittel, beispielsweise Polypropylen aufweist. Die Herstellung mit Granulat gestaltet sich besonders einfach und kostengünstig. Die Granulatkörner werden, wie etwa aus der Kunststoffspritzgußtechnologie bekannt, eingeschmolzen und in entsprechende Formen eingespritzt, wobei in einer besonders geeigneten Mischung das Granulat jeweils zu 50 % aus Naturfasern und Polypropylen besteht.The tool carrier is made of a granulate which has the constituents natural fibers and binders, for example polypropylene. The production with granules is particularly simple and inexpensive. The granules are, as known from plastic injection molding technology, melted and injected into appropriate molds, wherein in a particularly suitable mixture, the granules each consist of 50% natural fibers and polypropylene.

Das Schleif- und/ oder Polierelement kann ebenfalls zumindest teilweise aus Naturfasern hergestellt sein. Dies ist wiederum im Hinblick auf die umweltgerechte Entsorgung des verbrauchten Materialbearbeitungswerkzeuges von Vorteil.The grinding and / or polishing element may also be at least partially made of natural fibers. This is in turn with regard to the environmentally sound disposal of the used material processing tool advantage.

Die Erfindung wird im folgenden anhand von Beispielen weiter erläutert, die in der Zeichnung schematisch dargestellt sind. Es zeigen:

Fig. 1
eine teilweise geschnittene Draufsicht auf eine Fächerschleifscheibe;
Fig. 2
eine teilweise geschnittene perspektivische Ansicht eines Schleifrades, welches auch als Moprad bezeichnet wird;
Fig. 3
eine teilweise geschnittene perspektivische Ansicht eines walzenförmigen Werkzeugträgers in Verbindung mit einem Endlosschleifband;
Fig. 4
eine Längsschnittdarstellung eines Schleifwerkzeugs; und
Fig. 5
eine Ansicht eines mit Schleiflamellen besetzten Gewebeträgers als Einzelheit des Schleifwerkzeugs nach Fig. 4;
The invention will be further explained below with reference to examples, which are shown schematically in the drawing. Show it:
Fig. 1
a partially sectioned plan view of a flapper disc;
Fig. 2
a partially cutaway perspective view of a grinding wheel, which is also referred to as Moprad;
Fig. 3
a partially cutaway perspective view of a roller-shaped tool carrier in conjunction with an endless abrasive belt;
Fig. 4
a longitudinal sectional view of a grinding tool; and
Fig. 5
a view of an occupied with abrasive flaps fabric carrier as a detail of the grinding tool of FIG. 4;

In Figur 1 ist eine Fächerschleifscheibe 1 dargestellt, die aus einem Werkzeugträger 7 sowie fächerartig aufgebrachten Schleifelementen 5 (Schleiflamellen) besteht. Der Werkzeugträger 7 weist ebenfalls Kreisform auf, wobei in der hier gezeigten Ansicht der äußere Rand des Werkzeugträgers 7 nur in einem kleinen Winkelsegment sichtbar ist. In dem Kreismittelpunkt des Werkzeugsträgers 7 ist eine Öffnung 3 eingearbeitet, die zur Verbindung der Fächerschleifscheibe 1 mit einem Drehantrieb dient. Der Werkzeugträger 7 ist aus einem Hanf/ Polypropylen-Granulat gefertigt. Die Naturfasern 31 sind in Figur 1 schematisch dargestellt. Der Werkzeugträger 7 weist eine Werkzeugauflagefläche 9 auf, auf der eine Vielzahl von Schleifelementen 5 fächerartig angeordnet ist. In einem kleinen Winkelsegment sind allerdings die Schleifelemente 5 aus Darstellungsgründen weggelassen.FIG. 1 shows a flap wheel 1 which consists of a tool carrier 7 and fan-shaped grinding elements 5 (grinding blades). The tool carrier 7 also has a circular shape, wherein in the view shown here, the outer edge of the tool carrier 7 is visible only in a small angle segment. In the circle center of the tool carrier 7, an opening 3 is incorporated, which serves to connect the flapper disc 1 with a rotary drive. The tool carrier 7 is made of a hemp / polypropylene granules. The natural fibers 31 are shown schematically in FIG. The tool carrier 7 has a tool support surface 9, on which a plurality of grinding elements 5 is arranged like a fan. In a small angular segment, however, the grinding elements 5 are omitted for purposes of illustration.

Figur 2 zeigt ein sogenanntes Moprad 11, das einen walzenförmigen Werkzeugträger 15 mit radial angeordneten Schleifelementen 17 (Schleiflamellen) aufweist. In den Werkzeugträger 15 ist in dem dargestellten Beispiel mittig eine Achse 19 eingesetzt, über die das Moprad 11 mit einem Antrieb verbunden werden kann. Die Werkzeugauflagefläche 21 ist bei diesem Ausführungsbeispiel die Mantelfläche des Zylinders, wobei die Schleifelemente 17 auf der Mantelfläche angebracht sind und radial von dem Werkzeugträger 15 abstehen. Der Werkzeugträger 15 ist ebenfalls aus einem Naturfaser/-Bindemittel-Granulat gefertigt. In einem Teilsegment des Kreiszylinders sind die Schleifelemente 17 aus illustrationsgründen weggelassen, um die Werkzeugauflagefläche 21 zu veranschaulichen. Außerdem ist ein Teilbereich aufgebrochen dargestellt und die Naturfasern 31 sind schematisch angedeutet.FIG. 2 shows a so-called mop wheel 11 which has a roller-shaped tool carrier 15 with radially arranged grinding elements 17 (grinding lamellae). In the tool carrier 15, an axis 19 is used in the middle in the illustrated example, via which the mop 11 can be connected to a drive. The tool support surface 21 is in this embodiment, the lateral surface of the cylinder, wherein the grinding elements 17 are mounted on the lateral surface and project radially from the tool carrier 15. The tool carrier 15 is also made of a Natural fiber / binder granules made. In a sub-segment of the circular cylinder, the grinding elements 17 are omitted for illustrative purposes to illustrate the tool support surface 21. In addition, a partial area is shown broken up and the natural fibers 31 are schematically indicated.

Figur 3 zeigt einen walzenartigen ausgebildeten Werkzeugträger 23, auf dessen Werkzeugauflagefläche 25 im Arbeitsbetrieb ein Endlosschleif- oder Polierband abrollt. Der Werkzeugträger 23 weist eine axiale Öffnung 29 auf, die der Verbindung mit einem Drehantrieb dient (nicht dargestellt). Ein Teilstück des wiederum aus einem Naturfaser/ Bindemittel-Granulat hergestellten Werkzeugträgers 23 ist in der in Figur 3 gewählten Darstellung weggebrochen und die Naturfasern 31 sind schematisch angedeutet. Bei dem hier gezeigten Ausführungsbeispiel ist das Schleifelement, d. h. das Endlosschleifband 27 von der Werkzeugauflagefläche 25 nicht wie bei den in Figur 1 und Figur 2 gezeigten Ausführungsbeispielen durch eine Stoffschluß- sondern durch eine Kraftschlußverbindung aufgenommen.FIG. 3 shows a roller-like trained tool carrier 23, on the tool support surface 25 of which an endless grinding or polishing belt unrolls during operation. The tool carrier 23 has an axial opening 29 which serves to connect to a rotary drive (not shown). A portion of the tool carrier 23, which in turn is made of a natural fiber / binder granulate, is broken away in the illustration selected in FIG. 3, and the natural fibers 31 are indicated schematically. In the embodiment shown here, the abrasive element, i. H. the endless abrasive belt 27 of the tool support surface 25 is not received as in the embodiments shown in Figure 1 and Figure 2 by a Stoffschluß- but by a frictional connection.

Die Schleiflamellen 5, 17 der Beispiele gemäß Fig. 1 bzw. 2 bestehen aus einem Gewebe aus Naturfasern wie beispielsweise Hanf oder Flachs, welches auf der Arbeitsseite mit Schleifkorn besetzt ist. Das Schleifgewebe ist in an sich bekannter Weise mit einer Imprägnierung versehen, beispielsweise aus Phenolharzen, und z.B. mit Harnstoff besprüht, so dass eine gute Anhaftung des Schleifkorns gegeben ist.The grinding blades 5, 17 of the examples according to FIGS. 1 and 2 consist of a fabric of natural fibers such as hemp or flax, which is occupied on the working side with abrasive grain. The abrasive cloth is impregnated in a manner known per se, for example phenolic resins, and e.g. sprayed with urea, so that a good adhesion of the abrasive grain is given.

In gleicher Weise besteht auch das Schleifband 27 nach dem Beispiel der Figur 3 aus einem Gewebe aus Naturfasern mit einer Schleifkorn-Besetzung.In the same way, the abrasive belt 27 according to the example of FIG. 3 also consists of a fabric of natural fibers with an abrasive grain occupancy.

Bei dem Ausführungsbeispiel nach Fig. 4 und 5 umfasst das Schleifwerkzeug einen scheibenförmigen Werkzeugträger 10, einen separaten, lösbar auf dem Werkzeugträger 10 befestigbaren Gewebeträger 30 sowie darauf angebrachte, radial ausgerichtete Schleiflamellen 16. Grundstoff für Werkzeugträger 10, Gewebeträger 30 sowie Schleiflamellen 16 sind jeweils Naturfasern, die abhängig vom Verwendungszweck unterschiedlich verarbeitet und angepasst sind.In the embodiment according to FIGS. 4 and 5, the grinding tool comprises a disc-shaped tool carrier 10, a separate tissue carrier 30 which can be fastened detachably on the tool carrier 10 and radially oriented grinding lamellae 16 mounted thereon. Base material for tool carrier 10, tissue carrier 30 and abrasive lamellae 16 are each natural fibers that are processed and adapted differently depending on the purpose.

Die Stirnseite des Werkzeugträgers 10 ist mit Mikrohaken 12 versehen, die auch als Kletthaken bezeichnet werden. Sie wirken mit einer Auflage 26 aus losen Fäden als sog. Klettverschluss zusammen, so dass der Gewebeträger 30 auf dem Werkzeugträger leicht befestigt oder von diesem entfernt werden kann. Auf der der Auflage 26 gegenüberliegenden Seite des Gewebeträgers 30 sind die Naturfasern mit einer Imprägnierung versehen, welche die Klebeverbindung mit den Schleiflamellen 16 verbessert.The front side of the tool carrier 10 is provided with micro hooks 12, which are also referred to as Velcro hooks. They interact with a support 26 of loose threads as so-called Velcro, so that the fabric support 30 can be easily attached to the tool carrier or removed from it. On the side opposite the support 26 of the fabric support 30, the natural fibers are provided with an impregnation, which improves the adhesive bond with the grinding blades 16.

Bei dem mit Schleiflamellen 16 besetzten Gewebeträger 30 handelt es sich somit um einen Gegenstand, der nach dem Verschleiß der Schleiflamellen 16 durch einen neuen mit unverbrauchten Schleiflamellen 16 besetzten Gewebeträger ersetzt werden kann, während der Werkzeugträger 10 zur Schonung von Ressourcen beibehalten werden kann.The tissue carrier 30 occupied by abrasive lamellae 16 is thus an article which can be replaced after the wear of the abrasive lamellae 16 by a new tissue carrier occupied by unconsumable abrasive lamellae 16, while the tool carrier 10 can be retained for the conservation of resources.

Claims (2)

  1. A rotationally symmetrical, rigid and flexurally resistant tool carrier which is reinforced with natural fibres and formed from granulate by means of injection die moulding technique and whose fibre reinforcement is strengthened by a bonding agent, which can detachably be connected to a rotary drive, comprising a tool bearing surface (9; 21; 25) for receiving at least one grinding and/or polishing element (5; 17; 27),
    characterized in that
    it is made of granulate which comprises as a component natural fibres (31) and bonding agent, that the share of natural fibres is between 50% and 85%, and that the natural fibres (32) consist of hemp or flax.
  2. A die carrier according to claim 1,
    characterized in that
    the bonding agent is an artificial resin.
EP00943868A 1999-06-22 2000-06-23 Tool holder Expired - Lifetime EP1105252B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP06016758.2A EP1741516B1 (en) 1999-06-22 2000-06-23 Tool holder

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE29910931U DE29910931U1 (en) 1999-06-22 1999-06-22 Tool carrier
DE29910931U 1999-06-22
PCT/EP2000/005796 WO2000078506A1 (en) 1999-06-22 2000-06-23 Tool holder

Related Child Applications (1)

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EP06016758.2A Division EP1741516B1 (en) 1999-06-22 2000-06-23 Tool holder

Publications (2)

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EP1105252A1 EP1105252A1 (en) 2001-06-13
EP1105252B1 true EP1105252B1 (en) 2007-02-14

Family

ID=8075173

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EP06016758.2A Expired - Lifetime EP1741516B1 (en) 1999-06-22 2000-06-23 Tool holder
EP00943868A Expired - Lifetime EP1105252B1 (en) 1999-06-22 2000-06-23 Tool holder

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EP06016758.2A Expired - Lifetime EP1741516B1 (en) 1999-06-22 2000-06-23 Tool holder

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EP (2) EP1741516B1 (en)
AT (1) ATE353739T1 (en)
DE (2) DE29910931U1 (en)
ES (2) ES2476795T3 (en)
WO (1) WO2000078506A1 (en)

Cited By (2)

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WO2012000647A1 (en) 2010-06-29 2012-01-05 Gerd Eisenblätter Gmbh Tool support with a reinforcement of jute fibers, and an injection molding method for producing such a tool support
US9764449B2 (en) 2014-05-29 2017-09-19 Saint-Gobain Abrasives, Inc. Abrasive article having a core including a polymer material

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DE10106631A1 (en) * 2001-02-12 2002-08-22 Rueggeberg August Gmbh & Co Carrying plate for flap disc and flap disc
CN101376233B (en) * 2007-08-27 2010-09-15 四川省三台县固锐实业有限责任公司 Raised eight-degree plain abrasive cloth wheel
FI125880B (en) 2009-04-29 2016-03-31 Picote Oy Ltd Tool and method for pipeline renovation
DE102012021267B4 (en) 2012-09-18 2022-02-24 Ppr Gmbh flap disc
ES2553006T3 (en) 2012-09-18 2015-12-03 Ppr Gmbh Abrasive fan grinding wheel
DE102015011442A1 (en) 2015-09-01 2017-03-02 Gerd Eisenblätter Gmbh Flap disc, carrier plate therefor and method for its production
DE102016002401B4 (en) 2016-02-29 2024-05-16 Gerd Eisenblätter Gmbh Grinding wheel with asymmetrical backing plate
DE102016002400A1 (en) 2016-02-29 2017-08-31 Gerd Eisenblätter Gmbh Grinding wheel and carrier plate for it
DE102021127343A1 (en) 2021-10-21 2023-04-27 Klingspor Ag Grinding device with carrier wheel and abrasive

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US3498010A (en) * 1965-06-03 1970-03-03 Nobuyoshi Hagihara Flexible grinding disc
US3449871A (en) * 1966-06-18 1969-06-17 Hisamine Kobayashi Beeline flow finishing method and apparatus
DE4020461C1 (en) * 1990-06-27 1991-07-18 Gerd Eisenblaetter Gmbh, 8192 Geretsried, De Face grinding disc tool - has replaceable grinding disc with backing disc having plastics rods
US5316812A (en) * 1991-12-20 1994-05-31 Minnesota Mining And Manufacturing Company Coated abrasive backing
WO1995022438A1 (en) * 1994-02-22 1995-08-24 Minnesota Mining And Manufacturing Company Method for making an endless coated abrasive article and the product thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012000647A1 (en) 2010-06-29 2012-01-05 Gerd Eisenblätter Gmbh Tool support with a reinforcement of jute fibers, and an injection molding method for producing such a tool support
US9764449B2 (en) 2014-05-29 2017-09-19 Saint-Gobain Abrasives, Inc. Abrasive article having a core including a polymer material
US10213903B2 (en) 2014-05-29 2019-02-26 Saint-Gobain Abrasives, Inc. Abrasive article having a core including a polymer material

Also Published As

Publication number Publication date
ATE353739T1 (en) 2007-03-15
EP1105252A1 (en) 2001-06-13
DE29910931U1 (en) 1999-08-26
WO2000078506A1 (en) 2000-12-28
ES2476795T3 (en) 2014-07-15
EP1741516A1 (en) 2007-01-10
EP1741516B1 (en) 2014-04-02
ES2280228T3 (en) 2007-09-16
DE50014059D1 (en) 2007-03-29

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