EP1741516A1 - Tool holder - Google Patents

Tool holder Download PDF

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Publication number
EP1741516A1
EP1741516A1 EP06016758A EP06016758A EP1741516A1 EP 1741516 A1 EP1741516 A1 EP 1741516A1 EP 06016758 A EP06016758 A EP 06016758A EP 06016758 A EP06016758 A EP 06016758A EP 1741516 A1 EP1741516 A1 EP 1741516A1
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EP
European Patent Office
Prior art keywords
natural fibers
tool
grinding
polishing
binder
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.)
Granted
Application number
EP06016758A
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German (de)
French (fr)
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EP1741516B1 (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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Publication of EP1741516A1 publication Critical patent/EP1741516A1/en
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Classifications

    • 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 fiber-reinforced rotationally symmetrical tool carrier, a fabric carrier for grinding and polishing fabrics and a grinding and polishing cloth according to the preambles of the independent claims.
  • the invention further relates to a manufacturing method according to the preamble of the independent method claim.
  • a fiber-reinforced rotationally symmetrical tool carrier is releasably connectable to a rotary drive and also has a tool support surface for receiving at least one grinding and / or polishing element.
  • a material processing tool with a fiber-reinforced rotationally symmetrical 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.
  • the grinding and / or polishing elements may be, for example, felt polishing body, abrasive or polishing fleece, abrasive cloth and the like.
  • the invention provides that the fiber reinforcement consists at least partially of natural fiber.
  • the tool carrier is at least partially made of natural fibers.
  • a rotationally symmetrical blank for further processing to a tool carrier according to the invention is made of a fiber mat, which at least partially consists of natural fibers and is mixed with a binder for natural fibers.
  • Advantageous developments of the invention are claimed in the subclaims.
  • a core idea of the invention can be seen in the fact that the tool carrier of the material processing tool instead of plastic as before and thus essentially 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.
  • the binder may be used in commercial forms, e.g. be used as a suspension or solid as a powder or granules, with one- or multi-component binders are suitable.
  • Organic or inorganic binders can be used. Examples are phenolic resins, styrene resins, polycarbonates or polyolefins, in particular polypropylene.
  • a fiber fabric, such as a hemp, flax and / or sisal knitted fabric, which is interspersed with a solid binder can be pressed under increased pressure and at elevated temperature to the final shape. In the process, the binder melts, distributes itself in the fiber fabric, and a product of high stability and tensile strength results.
  • the proportion of natural fiber may be between 50% and 85%, preferably in the range of 70% to 80%.
  • the tool holder is made entirely of natural materials.
  • the disposal is particularly unproblematic.
  • cellulosic materials can be used as binders.
  • Preferred embodiments of the tool carrier are characterized in that the natural fibers consist of one or more of the materials hemp, flax or sisal.
  • the tool carrier is made of granules. Which has the ingredients natural fibers and polypropylene.
  • the production with Granules are particularly easy and inexpensive.
  • the granules are, as known from plastic injection molding technology, melted down and injected into appropriate molds, wherein in a particularly suitable mixture, the granules each consist of 50% natural fibers and polypropylene.
  • a preferred development of the material processing tool according to claim 8 is that the grinding and / or polishing element is also 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 holder 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 arranged in a fan-like manner is. 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.
  • 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 Malawiaaflage Chemistry 25 is not received as in the embodiments shown in Figure 1 and Figure 2 by a Stoffschluß- but by a frictional connection.
  • the abrasive flaps 5, 17 of the examples shown in FIG. 1 and 2 consist of a fabric of natural fibers such as hemp, sisal 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 consists of a fabric made of natural fibers with an abrasive grain occupancy.
  • the grinding tool comprises a disk-shaped tool carrier 10, a separate fabric carrier 26 which can be fastened detachably on the tool carrier 10 and radially oriented grinding lamellae 16 mounted thereon.
  • the raw material for tool carrier 10, fabric carrier 26 and grinding 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 30 of loose threads as so-called Velcro, so that the fabric support 26 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 26 occupied by abrasive lamellae 16 is thus an article which can be replaced after 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 to conserve resources.
  • FIG. 5 illustrates a phase of the manufacturing process of disc-shaped tools 60.
  • a plate-shaped body 61 is produced from a pulp of natural fibers and binder and homogeneously distributed abrasive grain. It is then pressed under elevated pressure and elevated temperature, wherein the blanks 62 of the tools are molded and pressed side by side. The blanks 62 thereby receive the final shape and strength of the final product. In a final punching process, the blanks 62 are punched out. Due to the incorporated abrasive grain, these tools can be used, for example, as cutting discs.
  • tools produced in this way can be filled with abrasive grain on their front side after punching, so that they can be used for grinding, roughing or polishing surfaces.
  • tool carriers according to FIGS. 1 and 4 can be produced.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Mechanical Treatment Of Semiconductor (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 faserverstärkten rotationssymmetrischen Werkzeugträger, einen Gewebeträger für Schleif- und Poliergewebe sowie ein Schleif- und Poliergewebe nach den Oberbegriffen der unabhängigen Sachansprüche. Die Erfindung betrifft ferner ein Herstellungsverfahren nach dem Oberbegriff des unabhängigen Verfahrensanspruchs.The invention relates to a fiber-reinforced rotationally symmetrical tool carrier, a fabric carrier for grinding and polishing fabrics and a grinding and polishing cloth according to the preambles of the independent claims. The invention further relates to a manufacturing method according to the preamble of the independent method claim.

Ein faserverstärkter rotationssymmetrischer Werkzeugträger ist lösbar mit einem Drehantrieb verbindbar und weist außerdem eine Werkzeugauflagefläche zur Aufnahme von mindestens einem Schleif- und/ oder Polierelement auf.A fiber-reinforced rotationally symmetrical tool carrier is releasably connectable to a rotary drive and also has a tool support surface for receiving at least one grinding and / or polishing element.

Bei einem Materialbearbeitungswerkzeug mit einem faserverstärten rotationssymmetrischen 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 fiber-reinforced rotationally symmetrical 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 Schleif- und/ 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 grinding 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 in kompakter Weise starr und biegesteif aus Kunststoff gefertigt, wobei auch Faserverstärkungen, beispielsweise Glasfaserverstärkungen, zum Einsatz kommen. 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.In the known material processing tools of the tool carrier is made in a compact manner rigid and rigid plastic, with fiber reinforcements, such as glass fiber reinforcements are used. 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, die eingangs genannten Gegenstände sowie ein Herstellungsverfahren dafür anzugeben, welche bei einfacher Herstellung günstige mechanische und thermische Eigenschaften aufweisen und darüber hinaus in unproblematischer Weise entsorgbar sind.Against this background, it is an object of the present invention to provide the aforementioned objects and a manufacturing method thereof, which have favorable mechanical and thermal properties with simple production and are also disposable in an unproblematic way.

Diese Aufgabe wird vorrichtungsmäßig und verfahrensmäßig mit den kennzeichnenden Merkmalen der unabhängigen Ansprüche gelöst. Bevorzugte Weiterbildungen sind in den abhängigen Ansprüchen bechrieben.This object is achieved in terms of apparatus and procedural with the characterizing features of the independent claims. Preferred developments are described in the dependent claims.

Bei einem faserverstärkten rotationssymmetrischen Werkzeugträger, der lösbar mit einem Drehantrieb verbindbar ist und mit einer Werkzeugauflagefläche zur Aufnahme von mindestens einem Schleif- und/ oder Polierelement versehen ist, ist erfindungsgemäß vorgesehen, dass die Faserverstärkung zumindest teilweise aus Naturfaser besteht.In a fiber-reinforced rotationally symmetrical tool carrier, which is detachably connectable to a rotary drive and provided with a tool support surface for receiving at least one grinding and / or polishing element, the invention provides that the fiber reinforcement consists at least partially of natural fiber.

Entsprechend ist bei einem erfindungsgemäßen Materialbearbeitungswerkzeug der oben bechriebenen Art vorgesehen, dass der Werkzeugträger zumindest teilweise aus Naturfasern hergestellt ist.Accordingly, it is provided in a material processing tool according to the invention of the type described above that the tool carrier is at least partially made of natural fibers.

Weiterhin ist ein rotationssymmetrischer Rohling zur Weiterverarbeitung zu einem Werkzeugträger erfindungsgemäß aus einer Fasermatte gefertigt, welche zumindest teilweise aus Naturfasern besteht und mit einem Bindemittel für Naturfasern versetzt ist. Vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen beansprucht.
Ein Kerngedanke der Erfindung kann darin gesehen werden, dass der Werkzeugträger des Materialbearbeitungswerkzeugs statt wie bisher aus Kunststoff und damit im wesentlichen Teil aus nachwachsenden Rohstoffen hergestellt ist.Furthermore, a rotationally symmetrical blank for further processing to a tool carrier according to the invention is made of a fiber mat, which at least partially consists of natural fibers and is mixed with a binder for natural fibers. Advantageous developments of the invention are claimed in the subclaims.
A core idea of the invention can be seen in the fact that the tool carrier of the material processing tool instead of plastic as before and thus essentially 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 of combustion through the use of renewable raw materials practically balanced. In addition, other disposal options such as composting are possible.

Es hat sich bei der Erfindung überraschen 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 been found surprising 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 erhalten der Werkzeugträger oder die eingangs beschriebenen Gegenstände, wenn die Faserverstärkung durch Bindemittel verfestigt ist. Das Bindemittel kann in den handelsüblichen Formen, z.B. als Suspension oder fest als Pulver oder Granulat, verwendet werden, wobei ein- oder mehrkomponentige Bindemittel geeignet sind. Es können organische oder anorganische Bindemittel verwendet werden. Beispiele sind Phenolharze, Styrolharze, Polycarbonate oder Polyolefine, wie insbesondere Polypropylen. Ein Fasergewebe, etwa ein Hanf-, Flachs- und/ oder Sisalgewirke, das mit einem festen Bindemittel durchsetzt ist, kann unter erhöhtem Druck und bei erhöhter Temperatur zur Endform verpreßt werden. Dabei schmilzt das Bindemittel auf, verteilt sich im Fasergewebe, und es entsteht ein Produkt von hoher Stabilität und Reißfestigkeit. Der Anteil der Naturfaser kann zwischen 50% und 85% liegen, bevorzugt im Bereich von 70% bis 80%.Particularly good mechanical and thermal properties of the tool carrier or the objects described above, when the fiber reinforcement is solidified by binder. The binder may be used in commercial forms, e.g. be used as a suspension or solid as a powder or granules, with one- or multi-component binders are suitable. Organic or inorganic binders can be used. Examples are phenolic resins, styrene resins, polycarbonates or polyolefins, in particular polypropylene. A fiber fabric, such as a hemp, flax and / or sisal knitted fabric, which is interspersed with a solid binder can be pressed under increased pressure and at elevated temperature to the final shape. In the process, the binder melts, distributes itself in the fiber fabric, and a product of high stability and tensile strength results. The proportion of natural fiber may be between 50% and 85%, preferably in the range of 70% to 80%.

Bei einer weiteren bevorzugten Auführungsvariante ist der Werkzeugträger vollständig aus Naturstoffen hergestellt. Dadurch gestaltet sich die Entsorgung besonders unproblematisch. Als Bindemittel können hier beispielsweise Cellulosematerialien eingesetzt sein.
Bevorzugte Ausführungsformen des Werkzeugträgers sind dadurch gekennzeichnet, dass die Naturfasern aus einem oder mehreren der Materialien Hanf, Flachs oder Sisal bestehen.In a further preferred Auführungsvariante the tool holder is made entirely of natural materials. As a result, the disposal is particularly unproblematic. For example, cellulosic materials can be used as binders.
Preferred embodiments of the tool carrier are characterized in that the natural fibers consist of one or more of the materials hemp, flax or sisal.

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.

Bei einer besonders bevorzugten Ausführungsform ist der Werkzeugträger aus einem Granulat hergestellt. Welches die Bestandteile Naturfasern und 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.In a particularly preferred embodiment, the tool carrier is made of granules. Which has the ingredients natural fibers and polypropylene. The production with Granules are particularly easy and inexpensive. The granules are, as known from plastic injection molding technology, melted down and injected into appropriate molds, wherein in a particularly suitable mixture, the granules each consist of 50% natural fibers and polypropylene.

Eine bevorzugte Weiterbildung des Materialbearbeitungswerkzeuges nach Anspruch 8 besteht darin, dass das Schleif- und/ oder Polierelement ebenfalls zumindest teilweise aus Naturfasern hergestellt ist. Dies ist wiederum im Hinblick auf die umweltgerechte Entsorgung des verbrauchten Materialbearbeitungswerkzeuges von Vorteil.A preferred development of the material processing tool according to claim 8 is that the grinding and / or polishing element is also 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 Fächerschleifmaschine;
Fig. 2
eine teilweise geschnittene perspektivische Ansicht eines Schleifrades, welches auch als Moprad bezeichnet wird;
Fig. 3
eine teilweise geschnittenen perspektivische Ansicht eines walzenförmigen Werkzeugträgers in Verbindung mit einem Endlosschleifband;
Fig. 4
eine Längsschnittdarstellung eines Schleifwerkzeugs;
Fig. 5
eine Ansicht eines mit Schleiflamellen besetzten Gewebeträgers als Einzelheit des Schleifwerkzeugs nach Fig. 4; und
Fig. 6
eine perspektivische Ansicht eines plattenförmigen Grundkörpers zur Herstellung von Werkzeugen oder Werkzeugträgern.
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;
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;
Fig. 5
a view of an occupied with abrasive flaps fabric carrier as a detail of the grinding tool of FIG. 4; and
Fig. 6
a perspective view of a plate-shaped base body for the production of tools or tool carriers.

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 au, 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 holder 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 arranged in a fan-like manner is. 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. 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 Werkzeugaaflagefläche 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 Werkzeugaaflagefläche 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, Sisal 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 abrasive flaps 5, 17 of the examples shown in FIG. 1 and 2 consist of a fabric of natural fibers such as hemp, sisal 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 Figure 3 consists of a fabric made of natural fibers with an abrasive grain occupancy.

Bei dem Ausführungsbeispiel nach Fig. 4 und 5 umfaßt das Schleifwerkzeug eine scheibenförmigen Werkzeugträger 10, eine separaten, lösbar auf dem Werkzeugträger 10 befestigbaren Gewebeträger 26 sowie darauf angebrachten, radial ausgerichteten Schleiflamellen 16. Grundstoff für Werkzeugträger 10, Gewebeträger 26 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 disk-shaped tool carrier 10, a separate fabric carrier 26 which can be fastened detachably on the tool carrier 10 and radially oriented grinding lamellae 16 mounted thereon. The raw material for tool carrier 10, fabric carrier 26 and grinding 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 30 aus losen Fäden als sog. Klettverschluss zusammen, so dass der Gewebeträger 26 auf dem Werkzeugträger leicht befestigt oder von diesem entfernt werden kann. Auf der der Auflage 30 gegenüberliegenden Seite des Gewebeträgers 26 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 30 of loose threads as so-called Velcro, so that the fabric support 26 can be easily attached to the tool carrier or removed from it. On the side opposite the support 30 of the fabric carrier 26, 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 26 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 26 occupied by abrasive lamellae 16 is thus an article which can be replaced after 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 to conserve resources.

In Fig. 5 ist eine Phase des Herstellungsverfahrens von scheibenförmigen Werkzeugen 60 veranschaulicht. Aus einer Pulpe aus Naturfasern und Bindemittel sowie homogen verteiltem Schleifkorn wird ein plattenförmiger Grundkörper 61 erzeugt. Er wird anschließend unter erhöhtem Druck und unter erhöhter Temperatur verpreßt, wobei nebeneinander die Rohlinge 62 der Werkzeuge geformt und gepreßt sind. Die Rohlinge 62 erhalten dabei die endgültige Form und Festigkeit des Endprodukts. In einem abschließendem Stanzvorgang werden die Rohlinge 62 ausgestanzt. Durch das eingebundene Schleifkorn können diese Werkzeuge zum Beispiel als Trennscheiben eingesetzt werden.FIG. 5 illustrates a phase of the manufacturing process of disc-shaped tools 60. From a pulp of natural fibers and binder and homogeneously distributed abrasive grain, a plate-shaped body 61 is produced. It is then pressed under elevated pressure and elevated temperature, wherein the blanks 62 of the tools are molded and pressed side by side. The blanks 62 thereby receive the final shape and strength of the final product. In a final punching process, the blanks 62 are punched out. Due to the incorporated abrasive grain, these tools can be used, for example, as cutting discs.

Zusätzlich oder alternativ können derartig hergestellte Werkzeuge auf ihrer Stirnseite nach dem Ausstanzen mit Schleifkorn besetzt werden, so dass sie zum Schleifen, Schruppen oder Polieren von Flächen eingesetzt werden können.Additionally or alternatively, tools produced in this way can be filled with abrasive grain on their front side after punching, so that they can be used for grinding, roughing or polishing surfaces.

Auf die gleiche Weise wie in Fig. 6 veranschaulicht, können Werkzeugträger gemäß Fig. 1 und Fig. 4 hergestellt werden.In the same way as illustrated in FIG. 6, tool carriers according to FIGS. 1 and 4 can be produced.

Claims (11)

Schleif- oder Poliergewebe,
dadurch gekennzeichnet,
dass es zumindest teilweise aus Naturfasern (31) hergestellt ist.Sanding or polishing fabrics,
characterized,
that it is at least partially made of natural fibers (31). Gewebeträger für Schleif- oder Poliergewebe,
dadurch gekennzeichnet,
dass er zumindest teilweise aus Naturfasern hergestellt ist.Fabric carrier for abrasive or polishing fabrics,
characterized,
that it is at least partially made of natural fibers. Faserverstärkter, rotationssymmetrischer Werkzeugträger,
der lösbar mit einem Drehantrieb verbindbar ist,
mit einer Werkzeugauflagefläche (9; 21; 25) zur Aufnahme von mindestens einem Schleif- und/oder Polierelement (5; 17; 27),
dadurch gekennzeichnet,
dass die Faserverstärkung zumindest teilweise aus Naturfasern (31) besteht.Fiber-reinforced, rotationally symmetrical tool carrier,
which is detachably connectable to a rotary drive,
with a tool support surface (9; 21; 25) for receiving at least one grinding and / or polishing element (5; 17; 27),
characterized,
that the fiber reinforcement at least partially of natural fibers (31). Schleif- oder Polierwerkzeug mit eingebundenem Schleifkorn,
dadurch gekennzeichnet,
dass es zumindest teilweise aus Naturfasern (31) hergestellt ist.Grinding or polishing tool with integrated abrasive grain,
characterized,
that it is at least partially made of natural fibers (31). Gegenstand nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
dass die Naturfasern (31) durch ein Bindemittel verfestigt sind.An article according to any one of the preceding claims,
characterized,
that the natural fibers (31) are solidified by a binder. Gegenstand nach Anspruch 5,
dadurch gekennzeichnet,
dass das Bindemittel ein Kunstharz ist.An article according to claim 5,
characterized,
that the binder is a synthetic resin. Gegenstand nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
dass die Naturfasern (31) aus einem oder mehreren der Materialien Hanf, Flachs, oder Sisal bestehen.An article according to any one of the preceding claims,
characterized,
that the natural fibers (31) consist of one or more of the materials hemp, flax, or sisal. Rohling zur Weiterverarbeitung zu einem starren und biegesteifen Werkzeugträger (7; 15; 23) gemäß einem der Ansprüche 1 bis 7,
dadurch gekennzeichnet,
dass er aus einer Fasermatte gefertigt ist, welche zumindest teilweise aus Naturfasern (31) besteht und mit einem Bindemittel für die Naturfasern (31) versetzt ist.Blank for further processing into a rigid and rigid tool carrier (7, 15, 23) according to one of claims 1 to 7,
characterized,
that it is made of a fiber mat, which at least partially consists of natural fibers (31) and is mixed with a binder for the natural fibers (31). Herstellungsverfahren für einen Werkzeugträger und ein Schleif- oder Polierwerkzeug nach einem der Ansprüche 3 oder 4
dadurch gekennzeichnet,
dass eine Pulpe aus Naturfasern und Bindemittel erzeugt wird, dass aus der Pulpe plattenförmige Grundkörper erzeugt werden, dass die Grundkörper in der Weise mittels eines Presswerkzeugs verpresst und geformt werden, dass nebeneinander mehrere Rohlinge gebildet werden, und dass die Rohlinge anschließend ausgestanzt werden.Manufacturing method for a tool carrier and a grinding or polishing tool according to one of claims 3 or 4
characterized,
that a pulp of natural fibers and binder is produced, that plate-shaped bodies are produced from the pulp, that the bodies are pressed and shaped in such a way by means of a pressing tool, that a plurality of blanks are formed side by side, and then the blanks are punched out. Verfahren nach Anspruch 9,
dadurch gekennzeichnet,
dass zur Erzeugung einer glatten Oberfläche die zugehörige Presswerkzeugoberfläche entsprechend glatt ausgebildet ist.Method according to claim 9,
characterized,
in order to produce a smooth surface, the associated pressing tool surface is correspondingly smooth. Verfahren nach Anspruch 9 oder 10,
dadurch gekennzeichnet,
dass der Pulpe Schleifkorn zugeführt und homogen verteilt wird, so dass in den daraus hergestellten Gegenständen das Schleifkorn gleichmäßig verteilt ist.Method according to claim 9 or 10,
characterized,
that the pulp is fed abrasive grain and distributed homogeneously, so that in the articles produced therefrom, the abrasive grain is evenly distributed.
EP06016758.2A 1999-06-22 2000-06-23 Tool holder Expired - Lifetime EP1741516B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29910931U DE29910931U1 (en) 1999-06-22 1999-06-22 Tool carrier
EP00943868A EP1105252B1 (en) 1999-06-22 2000-06-23 Tool holder

Related Parent Applications (1)

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EP00943868A Division EP1105252B1 (en) 1999-06-22 2000-06-23 Tool holder

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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
DE102015011442A1 (en) 2015-09-01 2017-03-02 Gerd Eisenblätter Gmbh Flap disc, carrier plate therefor and method for its production
DE102016002401A1 (en) 2016-02-29 2017-08-31 Gerd Eisenblätter Gmbh Grinding wheel and carrier plate for it
DE102016002400A1 (en) 2016-02-29 2017-08-31 Gerd Eisenblätter Gmbh Grinding wheel and carrier plate for it

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EP2708326B8 (en) 2012-09-18 2016-03-09 PPR GmbH Flap grinding disc
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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
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
DE102015011442A1 (en) 2015-09-01 2017-03-02 Gerd Eisenblätter Gmbh Flap disc, carrier plate therefor and method for its production
DE102016002401A1 (en) 2016-02-29 2017-08-31 Gerd Eisenblätter Gmbh Grinding wheel and carrier plate for it
DE102016002400A1 (en) 2016-02-29 2017-08-31 Gerd Eisenblätter Gmbh Grinding wheel and carrier plate for it
DE102016002401B4 (en) 2016-02-29 2024-05-16 Gerd Eisenblätter Gmbh Grinding wheel with asymmetrical backing plate

Also Published As

Publication number Publication date
WO2000078506A1 (en) 2000-12-28
EP1105252A1 (en) 2001-06-13
EP1741516B1 (en) 2014-04-02
ES2476795T3 (en) 2014-07-15
ES2280228T3 (en) 2007-09-16
DE29910931U1 (en) 1999-08-26
EP1105252B1 (en) 2007-02-14
ATE353739T1 (en) 2007-03-15
DE50014059D1 (en) 2007-03-29

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