EP1458528B1 - Cutting or grinding or drilling tool having low-height cutting or grinding layers, and method for producing a such a tool - Google Patents

Cutting or grinding or drilling tool having low-height cutting or grinding layers, and method for producing a such a tool Download PDF

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Publication number
EP1458528B1
EP1458528B1 EP02792627A EP02792627A EP1458528B1 EP 1458528 B1 EP1458528 B1 EP 1458528B1 EP 02792627 A EP02792627 A EP 02792627A EP 02792627 A EP02792627 A EP 02792627A EP 1458528 B1 EP1458528 B1 EP 1458528B1
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EP
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Prior art keywords
intermediate layer
hard material
material grains
base body
segments
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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EP02792627A
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German (de)
French (fr)
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EP1458528A2 (en
Inventor
Hans Grüneis
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Robert Bosch GmbH
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Robert Bosch GmbH
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D18/00—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for
    • B24D18/0054—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for by impressing abrasive powder in a matrix
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
    • B24D3/02—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent
    • B24D3/04—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic
    • B24D3/06—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic metallic or mixture of metals with ceramic materials, e.g. hard metals, "cermets", cements
    • B24D3/08—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic metallic or mixture of metals with ceramic materials, e.g. hard metals, "cermets", cements for close-grained structure, e.g. using metal with low melting point
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C30/00—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process
    • C23C30/005—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process on hard metal substrates

Definitions

  • the present invention relates to cutting, grinding or drilling tools with cutting or grinding layers of low height.
  • Cutting tools such as cutting wheels, drill bits, milling and grinding tools or ropes equipped with cutting beads containing hard materials (preferably diamond) are known from the prior art in a variety of ways. In the majority of cases, the cutting elements are produced by sintering. Only for a few applications, the hard materials are applied galvanically.
  • Sintered cutting pads do not reach the cutting performance of a new electrodeposited cutting pad.
  • the cutting pads are very variable to produce because sintered metals, hard material, hard material quality and the dimensions of the cutting pads are freely selectable in many areas. Under the restriction that also different cutting pad variations have to be used for different applications, tools thus produced are also economical.
  • EP 1 066 927 discloses a method for producing a grinding tool, in which a paste, which is an intermediate layer material, is applied to a base body with a spatula. Then the interlayer material is sprinkled with hard material grains and then heated in a vacuum oven so that the interlayer crumbles with the scattered hard grains.
  • the object of the present invention is to provide a cutting, grinding or drilling tool with cutting or grinding layers of low height that the Thomasfreudtechnik a galvanically produced tool in the initial phase but whose cutting surface but allows hard material and binding wear and thus allows good lifetime values, the method for producing such tools should be cost-effective and should lead to economical and versatile tools.
  • a drilling tool comprising a driven body having a hard material grains and an abrasive layer containing intermediate layer or segments, teeth or the like containing a hard grains and an intermediate layer containing the intermediate layer is made of a non-ferrous metal or a metal alloy in that the intermediate layer for receiving the hard material grains on the base body, the segments, teeth or the like in at least one of is partially molten state that the hard grains are promoted by means of an air or gas delivery jet to the melt and at least partially penetrated into the melt and that the abrasive layer from the intermediate layer protruding hard material grains and a deep structure by further penetrated into the intermediate layer hard material grains.
  • the base body and the segments or teeth are made of the non-ferrous metal or the metal alloy.
  • the intermediate layer of non-ferrous metal or a metal alloy is applied to the base body, the segments or teeth in a reflow process, wherein the intermediate layer is subjected to a cooling and solidification process before the application of the hard material grains.
  • the metal alloy is a bronze.
  • the melting of the intermediate layer is preferably carried out by a laser beam.
  • the melting of the intermediate layer may be electrical, as by an induction loop.
  • the gas delivery stream preferably consists of inert gas and the hard material grains are preferably made of diamond.
  • the layer is profiled.
  • the main body, the segments or teeth of the non-ferrous metal or the metal alloy are configured to be any suitable metal or the metal alloy.
  • the intermediate layer of non-ferrous metal or a metal alloy is applied to the base body, the segments or teeth in a reflow process, wherein the intermediate layer is subjected to a cooling and solidification process before the application of the hard material grains.
  • the melting of the intermediate layer is preferably carried out by a laser beam.
  • the melting of the intermediate layer may be electrical, as by an induction loop.
  • the gas delivery stream preferably consists of inert gas and the hard material grains are preferably made of diamond.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Abstract

The invention relates to a cutting or grinding or drilling tool having low-height cutting or grinding layers, comprised of a driven base body with an abrasive layer containing hard material grains or with segments, teeth or the like all of which provided with an abrasive layer containing hard material grains. The invention is characterized in that the layer consists of a nonferrous metal or of a metal alloy, and in that the layer for accommodating the hard material grains on the base body, the segments, teeth or the like exists in an at least partially melted state.

Description

Die vorliegende Erfindung betrifft Schneid- Schleif- oder Bohrwerkzeuge mit Schneid- oder Schleifschichten geringer Höhe.The present invention relates to cutting, grinding or drilling tools with cutting or grinding layers of low height.

Trennschleifwerkzeuge wie Trennscheiben, Bohrkronen, Fräs- und Schleifwerkzeuge oder auch mit Schneidperlen bestückte Seile, die Hartstoffe (vorzugsweise Diamant) enthalten sind in vielfältiger Art aus dem Stand der Technik bekannt. In den überwiegenden Fällen werden die Schneidelemente sintertechnisch hergestellt. Nur für wenige Anwendungen werden die Hartstoffe galvanisch aufgebracht.Cutting tools such as cutting wheels, drill bits, milling and grinding tools or ropes equipped with cutting beads containing hard materials (preferably diamond) are known from the prior art in a variety of ways. In the majority of cases, the cutting elements are produced by sintering. Only for a few applications, the hard materials are applied galvanically.

Die Qualität eines solchen Werkzeugs wird durch drei Kriterien bestimmt:

  • Höhe der Zerspanungsleistung,
  • Lebensdauer,
  • Preis.
The quality of such a tool is determined by three criteria:
  • Amount of cutting power,
  • Lifespan,
  • Price.

Es ist bekannt, dass Werkzeuge mit galvanischen Belägen beim Ersteinsatz immer eine sehr hohe Zerspanungsleistung haben. Aber nur in wenigen Anwendungen, wie z.B. dem Trennen von glasfaserverstärkten Kunststoffen, bleibt die hohe Leistungsfähigkeit für eine genügend lange Zeit erhalten, um die Wirtschaftlichkeit zu gewährleisten. Wird andererseits eine galvanisch belegte Trennscheibe z.B. zum Trennen von Granit verwendet, schneidet diese kurze Zeit sehr gut, die Leistungsfähigkeit sinkt dann aber schnell auf fast Null, da exponierte Hartstoffkörner anpolieren.It is known that tools with galvanic coverings always have a very high chip removal rate on first use. But only in a few applications, such as the separation of glass fiber reinforced plastics, the high performance is maintained for a sufficiently long time to ensure cost-effectiveness. If, on the other hand, a galvanic cut-off wheel is used, for example, to separate granite, this intersects very well for a short time, but then the performance drops rapidly to almost zero, as exposed hard-material grains are polished.

Gesinterte Schneidbeläge erreichen die Zerspanungsleistung eines neuen galvanisch hergestellten Schneidbelags nicht. Die Schneidbeläge sind jedoch sehr variabel herstellbar, da Sintermetalle, Hartstoffmenge, Hartstoffqualität und die Abmessungen der Schneidbeläge in weiten Bereichen frei wählbar sind. Unter der Einschränkung, dass für unterschiedliche Anwendungen auch unterschiedliche Schneidbelagvariationen eingesetzt werden müssen, sind so hergestellte Werkzeuge auch wirtschaftlich.Sintered cutting pads do not reach the cutting performance of a new electrodeposited cutting pad. However, the cutting pads are very variable to produce because sintered metals, hard material, hard material quality and the dimensions of the cutting pads are freely selectable in many areas. Under the restriction that also different cutting pad variations have to be used for different applications, tools thus produced are also economical.

Es gibt jedoch auch Anwendungen, wie z.B. den Hoch- und Tiefbau, bei denen für das Sägen und Bohren universelle Werkzeuge benötigt werden, da die zu bearbeitenden Materialien im Voraus nicht bekannt sind. Für solche Anwendungen wurden neue Herstellungsverfahren entwickelt. Aus der EP-B-0-931 180 ist ein Verfahren zum Beschichten einer Trennscheibe durch Aufschmelzen des Belags mittels eines Laserstrahls bekannt. Die solcherart hergestellten Schneidbeläge haben grundsätzlich das gleiche Problem wie sintertechnisch hergestellte, d.h. die Verschleißfestigkeit der die Hartstoffe haltenden Bindung muss dem Verwendungszweck angepasst werden. Aus der PCT/DE98/02947 ist es bekannt, bei einem solchen Verfahren eine titanhaltige Zwischenschicht zwischen Grundkörper und Schneidbelag vorzusehen, um eine größere Haftung des Schneidbelags zu erzielen.However, there are also applications such as e.g. civil engineering, where universal tools are required for sawing and drilling, since the materials to be processed are not known in advance. New manufacturing processes have been developed for such applications. From EP-B-0-931 180 a method for coating a cutting wheel by melting the deposit by means of a laser beam is known. The cutting coatings produced in this way basically have the same problem as sintered, ie. the wear resistance of the binding containing the hard substances must be adapted to the intended use. From PCT / DE98 / 02947 it is known to provide a titanium-containing intermediate layer between the base body and the cutting layer in such a method in order to achieve greater adhesion of the cutting layer.

In der EP 1 066 927 ist ein Verfahren zur Herstellung eines Schleifwerkzeugs offenbart, bei dem eine Paste, welche ein Zwischenschichtmaterial darstellt, mit einem Spatel auf einen Grundkörper aufgetragen wird. Dann wird das Zwischenschichtmaterial mit Hartstoffkörnern bestreut und anschließend in einem Vakuumofen erhitzt, so dass die Zwischenschicht mit den verstreuten Hartstoffkörnern verbackt.EP 1 066 927 discloses a method for producing a grinding tool, in which a paste, which is an intermediate layer material, is applied to a base body with a spatula. Then the interlayer material is sprinkled with hard material grains and then heated in a vacuum oven so that the interlayer crumbles with the scattered hard grains.

Aufgabe der vorliegenden Erfindung ist es, ein Schneid-, Schleif- oder Bohrwerkzeug mit Schneid- oder Schleifschichten geringer Höhe zu schaffen, das die Schnittfreudigkeit eines galvanisch hergestellten Werkzeuges in der Anfangsphase aufweist, dessen Schneidbelag aber Hartstoff- und Bindungsverschleiß zulässt und so gute Lebensdauerwerte zulässt, wobei das Verfahren zur Herstellung solcher Werkzeuge kostengünstig sein und zu wirtschaftlich und vielfältig einsetzbaren Werkzeugen führen soll.The object of the present invention is to provide a cutting, grinding or drilling tool with cutting or grinding layers of low height that the Schnittfreudigkeit a galvanically produced tool in the initial phase but whose cutting surface but allows hard material and binding wear and thus allows good lifetime values, the method for producing such tools should be cost-effective and should lead to economical and versatile tools.

Diese Aufgabe wird mit den im kennzeichnenden Teil des Anspruchs 1 genannten Merkmalen gelöst. Fortbildungen und vorteilhafte Ausführungen der Erfindung sind in den weiteren Ansprüchen umfasst.This object is achieved with the features mentioned in the characterizing part of claim 1. Training and advantageous embodiments of the invention are included in the further claims.

Versuche haben überraschenderweise ergeben, dass es möglich ist, Stahlgrundkörper zuerst mit einer Zwischenschicht zu beschichten und in einem zweiten Durchgang die Zwischenschicht noch einmal mit Hilfe eines Festkörperlasers anzuschmelzen und gleichzeitig Hartstoffkörner in die Oberfläche der Zwischenschicht einzubringen. Die mit Hilfe eines Schutzgas-Förderstroms auf der Schmelze auftreffenden Hartstoffkörner dringen teilweise bis vollständig in die Zwischenschicht ein und gehen eine gute Bindung mit der Schmelze ein. Die so entstandene Schneidschicht hat viele weit aus dem Bindungsmaterial ragende Schneidkörper und trotzdem noch eine Tiefenstruktur durch weiter in das Bindungsmaterial eingedrungene Körner. Die so entstehenden Werkzeuge enthalten viele Hartstoffe bei gleichzeitig wenig Bindungsmaterial, das durch den Abrieb wegerodiert wird. Zusätzlich schafft die Höhenstruktur Spanräume für den Abrieb und erhöht die Schnittgeschwindigkeit. Um die Wirtschaftlichkeit weiter zu steigern, ist es möglich, die Zwischenschicht z.B. durch Wellenform in der Höhe zu strukturieren.Experiments have surprisingly revealed that it is possible to coat steel base body first with an intermediate layer and to melt in a second pass, the intermediate layer once again using a solid state laser and at the same time introduce hard material grains in the surface of the intermediate layer. The hard material grains impinging on the melt with the aid of a protective gas delivery flow partially or completely penetrate into the intermediate layer and enter into a good bond with the melt. The resulting cutting layer has many far out of the binding material projecting cutting body and still a deep structure by further penetrated into the binding material grains. The resulting tools contain many hard materials with at the same time little binding material, which is eroded away by the abrasion. In addition, the height structure creates chip spaces for abrasion and increases the cutting speed. In order to further increase the economy, it is possible to use the intermediate layer e.g. Structure by waveform in height.

Erfindungsgemäß ist daher ein Bohrwerkzeug, bestehend aus einem angetriebenen Grundkörper mit einer Hartstoffkörner und eine Zwischenschicht enthaltenden abrasiven Schicht oder mit mit einer Hartstoffkörner und eine Zwischenschicht enthaltenden abrasiven Schicht versehenen Segmenten, Zähnen oder dergleichen, wobei die Zwischenschicht aus einem Nichteisenmetall oder einer Metalllegierung besteht, dadurch gekennzeichnet, dass die Zwischenschicht zur Aufnahme der Hartstoffkörner auf dem Grundkörper, den Segmenten, Zähnen oder dergleichen in einem wenigstens teilweise geschmolzenen Zustand vorliegt, dass die Hartstoffkörner mittels eines Luft- oder Gasförderstrahls auf die Schmelze gefördert sind und wenigstens teilweise in die Schmelze eingedrungen sind und dass die abrasive Schicht aus der Zwischenschicht ragende Hartstoffkörner und eine Tiefenstruktur durch weiter in die Zwischenschicht eingedrungene Hartstoffkörner aufweist.Therefore, according to the present invention, a drilling tool comprising a driven body having a hard material grains and an abrasive layer containing intermediate layer or segments, teeth or the like containing a hard grains and an intermediate layer containing the intermediate layer is made of a non-ferrous metal or a metal alloy in that the intermediate layer for receiving the hard material grains on the base body, the segments, teeth or the like in at least one of is partially molten state that the hard grains are promoted by means of an air or gas delivery jet to the melt and at least partially penetrated into the melt and that the abrasive layer from the intermediate layer protruding hard material grains and a deep structure by further penetrated into the intermediate layer hard material grains.

Nach einer Ausführung der Erfindung bestehen der Grundkörper und die Segmente oder Zähne aus dem Nichteisenmetall oder der Metalllegierung.According to one embodiment of the invention, the base body and the segments or teeth are made of the non-ferrous metal or the metal alloy.

Vorzugsweise ist die Zwischenschicht aus Nichteisenmetall oder einer Metalllegierung auf den Grundkörper, die Segmente oder Zähne in einem Aufschmelzverfahren aufgebracht, wobei die Zwischenschicht vor dem Aufbringen der Hartstoffkörner einem Abkühlungs- und Erstarrungsvorgang unterworfen ist.Preferably, the intermediate layer of non-ferrous metal or a metal alloy is applied to the base body, the segments or teeth in a reflow process, wherein the intermediate layer is subjected to a cooling and solidification process before the application of the hard material grains.

Nach einer Ausführung der Erfindung ist die Metalllegierung eine Bronze.According to one embodiment of the invention, the metal alloy is a bronze.

Das Schmelzen der Zwischenschicht erfolgt vorzugsweise durch einen Laserstrahl. Alternativ kann das Schmelzen der Zwischenschicht elektrisch, wie mittels einer Induktionsschleife erfolgen.The melting of the intermediate layer is preferably carried out by a laser beam. Alternatively, the melting of the intermediate layer may be electrical, as by an induction loop.

Der Gasförderstrahl besteht vorzugsweise aus Schutzgas und die Hartstoffkörner bestehen vorzugsweise aus Diamant.The gas delivery stream preferably consists of inert gas and the hard material grains are preferably made of diamond.

Nach einer vorteilhaften Ausführung der Erfindung ist die Schicht profiliert.According to an advantageous embodiment of the invention, the layer is profiled.

Ein Verfahren zur Herstellung eines Schneid-, Schleif- oder Bohrwerkzeugs, bestehend aus einem angetriebenen Grundkörper mit einer Hartstoffkörner und eine Zwischenschicht enthaltenden abrasiven Schicht oder mit mit einer Hartstoffkörner und eine Zwischenschicht enthaltenden abrasiven Schicht versehenen Segmenten, Zähnen oder dergleichen, ist erfindungsgemäß gekennzeichnet durch die Schritte:

  • zunächst Beschichten des Grundkörpers mit der Zwischenschicht,
  • anschließendes punktuelles oder kleinflächiges Aufschmelzen eines Bereichs der auf dem Grundkörper, den Segmenten oder Zähnen aufgebrachten Zwischenschicht, oder einer äußeren Schicht des Grundkörpers, bzw. der Segmente oder Zähne, wobei die Zwischenschicht aus einem Nichteisenmetall oder einer Metalllegierung besteht,
  • Aufblasen von Hartstoffkörnern aus einer Düse mittels eines Gasförderstrahls auf den geschmolzenen Bereich, wobei die Hartstoffkörner teilweise bis vollständig in die Zwischenschicht eindringen und das Aufschmelzen und Aufblasen bei kontinuierlichem Vorschub des Grundkörpers erfolgt,
  • und Abkühlen des Werkzeugs.
A method for producing a cutting, grinding or drilling tool, consisting of a driven base body with a hard material grains and an intermediate layer containing abrasive layer or provided with a hard grains and an intermediate layer abrasive layer containing segments, teeth or the like, is characterized in that Steps:
  • first coating the base body with the intermediate layer,
  • subsequent punctiform or small-area melting of a region of the intermediate layer applied to the base body, the segments or teeth, or an outer layer of the base body, or the segments or teeth, wherein the intermediate layer consists of a non-ferrous metal or a metal alloy,
  • Inflating hard-material grains from a nozzle by means of a gas-conveying jet onto the molten area, wherein the hard-material grains partially or completely penetrate into the intermediate layer and the melting and inflation takes place with continuous advancement of the basic body,
  • and cooling the tool.

Nach einer Ausführung der Erfindung bestehen der Grundkörper, die Segmente oder Zähne aus dem Nichteisenmetall oder der Metalllegierung.According to one embodiment of the invention, the main body, the segments or teeth of the non-ferrous metal or the metal alloy.

Vorzugsweise ist die Zwischenschicht aus Nichteisenmetall oder einer Metalllegierung auf den Grundkörper, die Segmente oder Zähne in einem Aufschmelzverfahren aufgebracht, wobei die Zwischenschicht vor dem Aufbringen der Hartstoffkörner einem Abkühlungs- und Erstarrungsvorgang unterworfen ist.Preferably, the intermediate layer of non-ferrous metal or a metal alloy is applied to the base body, the segments or teeth in a reflow process, wherein the intermediate layer is subjected to a cooling and solidification process before the application of the hard material grains.

Das Schmelzen der Zwischenschicht erfolgt vorzugsweise durch einen Laserstrahl. Alternativ kann das Schmelzen der Zwischenschicht elektrisch, wie mittels einer Induktionsschleife erfolgen.The melting of the intermediate layer is preferably carried out by a laser beam. Alternatively, the melting of the intermediate layer may be electrical, as by an induction loop.

Der Gasförderstrahl besteht vorzugsweise aus Schutzgas und die Hartstoffkörner bestehen vorzugsweise aus Diamant.The gas delivery stream preferably consists of inert gas and the hard material grains are preferably made of diamond.

Claims (17)

  1. Drilling tool, comprising a driven base body with an abrasive layer containing hard material grains and an intermediate layer or with segments, teeth or the like provided with an abrasive layer containing hard material grains and an intermediate layer, the intermediate layer consisting of a nonferrous metal or a metal alloy, characterized in that, for receiving the hard material grains on the base body, the segments, teeth or the like, the intermediate layer is in an at least partly molten state, in that the hard material grains have been transported onto the melt by means of an air or gas transporting jet and have penetrated at least partly into the melt and in that the abrasive layer has hard material grains protruding from the intermediate layer and a depth structure through hard material grains penetrated further into the intermediate layer.
  2. Drilling tool according to Claim 1, characterized in that the base body, the segments or teeth consist of the nonferrous metal or the metal alloy.
  3. Drilling tool according to Claim 1, characterized in that the intermediate layer of nonferrous metal or metal alloy is applied to the base body, the segments or teeth in a melting process, the intermediate layer being subjected to a cooling and solidifying operation before the application of the hard material grains.
  4. Drilling tool according to one of the preceding claims, characterized in that the metal alloy is a bronze.
  5. Drilling tool according to one of the preceding claims, characterized in that the melting of the intermediate layer takes place by a laser beam.
  6. Drilling tool according to one of Claims 1 to 4, characterized in that the melting of the intermediate layer takes place electrically, such as by means of an induction loop.
  7. Drilling tool according to one of the preceding claims, characterized in that the gas transporting jet consists of inert gas.
  8. Drilling tool according to one of the preceding claims, characterized in that the hard material grains consist of diamond.
  9. Drilling tool according to one of the preceding claims, characterized in that the layer is profiled.
  10. Method for producing a cutting, grinding or drilling tool, comprising a driven base body with an abrasive layer containing hard material grains and an intermediate layer or with segments, teeth or the like provided with an abrasive layer containing hard material grains and an intermediate layer, characterized by the steps of:
    first coating the base body with the intermediate layer,
    then melting a point or small area of the region of the intermediate layer applied to the base body, the segments or teeth, or an outer layer of the base body, or the segments or teeth,
    the intermediate layer consisting of a nonferrous metal or metal alloy,
    blasting hard material grains onto the melted region from a nozzle by means of a gas transporting jet,
    the hard material grains penetrating partly to completely into the intermediate layer and the melting and blasting taking place with continuous advancement of the base body,
    and cooling the tool.
  11. Method according to Claim 10, characterized in that the base body, the segments or teeth consist of the nonferrous metal or the metal alloy.
  12. Method according to Claim 10, characterized by the previous step that the intermediate layer of nonferrous metal or a metal alloy is applied to the base body, the segments or teeth in a melting process, the intermediate layer being subjected to a cooling and solidifying operation before the application of the hard material grains.
  13. Method according to one of Claims 10 to 12, characterized in that the metal alloy is a bronze.
  14. Method according to one of Claims 10 to 13, characterized in that the melting of the intermediate layer takes place by a laser beam.
  15. Method according to one of Claims 10 to 13, characterized in that the melting of the intermediate layer takes place electrically, such as by means of an induction loop.
  16. Method according to one of Claims 10 to 15, characterized in that the gas transporting jet consists of inert gas.
  17. Method according to one of Claims 10 to 16, characterized in that the hard material grains consist of diamond.
EP02792627A 2001-12-03 2002-11-29 Cutting or grinding or drilling tool having low-height cutting or grinding layers, and method for producing a such a tool Expired - Lifetime EP1458528B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10158933 2001-12-03
DE10158933A DE10158933A1 (en) 2001-12-03 2001-12-03 Cutting or grinding or drilling tool with cutting or grinding layers of low height, and method for producing such a tool
PCT/DE2002/004394 WO2003047822A2 (en) 2001-12-03 2002-11-29 Cutting or grinding or drilling tool having low-height cutting or grinding layers, and method for producing a such a tool

Publications (2)

Publication Number Publication Date
EP1458528A2 EP1458528A2 (en) 2004-09-22
EP1458528B1 true EP1458528B1 (en) 2007-03-21

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EP (1) EP1458528B1 (en)
AT (1) ATE357319T1 (en)
AU (1) AU2002358423A1 (en)
DE (3) DE10158933A1 (en)
WO (1) WO2003047822A2 (en)

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US7458765B2 (en) 2005-09-23 2008-12-02 Fraunhofer Usa Diamond hard coating of ferrous substrates
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EP1458528A2 (en) 2004-09-22
AU2002358423A1 (en) 2003-06-17
WO2003047822A3 (en) 2003-10-02
DE10158933A1 (en) 2003-06-12
WO2003047822A2 (en) 2003-06-12
DE50209803D1 (en) 2007-05-03
AU2002358423A8 (en) 2003-06-17
ATE357319T1 (en) 2007-04-15
DE10295592D2 (en) 2004-10-14

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