EP3347163B1 - Dressing tool - Google Patents

Dressing tool Download PDF

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Publication number
EP3347163B1
EP3347163B1 EP16769904.0A EP16769904A EP3347163B1 EP 3347163 B1 EP3347163 B1 EP 3347163B1 EP 16769904 A EP16769904 A EP 16769904A EP 3347163 B1 EP3347163 B1 EP 3347163B1
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EP
European Patent Office
Prior art keywords
dressing
elements
tool according
carrier
grains
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EP16769904.0A
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German (de)
French (fr)
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EP3347163A1 (en
Inventor
Horst Lach
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Jakob Lach GmbH and Co KG
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Jakob Lach GmbH and Co KG
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    • 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
    • B24B53/00—Devices or means for dressing or conditioning abrasive surfaces
    • B24B53/04—Devices or means for dressing or conditioning abrasive surfaces of cylindrical or conical surfaces on abrasive tools or wheels
    • B24B53/047—Devices or means for dressing or conditioning abrasive surfaces of cylindrical or conical surfaces on abrasive tools or wheels equipped with one or more diamonds
    • 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
    • B24B53/00—Devices or means for dressing or conditioning abrasive surfaces
    • B24B53/04—Devices or means for dressing or conditioning abrasive surfaces of cylindrical or conical surfaces on abrasive tools or wheels
    • B24B53/053—Devices or means for dressing or conditioning abrasive surfaces of cylindrical or conical surfaces on abrasive tools or wheels using a rotary dressing tool
    • 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
    • B24B53/00—Devices or means for dressing or conditioning abrasive surfaces
    • B24B53/06—Devices or means for dressing or conditioning abrasive surfaces of profiled abrasive wheels
    • B24B53/062—Devices or means for dressing or conditioning abrasive surfaces of profiled abrasive wheels using rotary dressing tools
    • 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
    • B24B53/00—Devices or means for dressing or conditioning abrasive surfaces
    • B24B53/12—Dressing tools; Holders therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
    • B24D7/06—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor with inserted abrasive blocks, e.g. segmental

Definitions

  • the invention relates to a dressing tool according to the preamble of claim 1.
  • a dressing tool of the type mentioned is from DE 38 11 784 A1 famous.
  • the dressing tool in the form of a dressing roller essentially comprises a circular-cylindrical base body with a flat ring disk, on the circumference of which diamonds are arranged and which define an axial machining surface parallel to the axis of the dressing roller.
  • the DE 2 98 19 006 U1 relates to a diamond dressing disk, consisting of a rotationally symmetrical body which is coated on its peripheral surface and/or on one end face with motionless diamond grains.
  • a diamond dressing disk consisting of a rotationally symmetrical body which is coated on its peripheral surface and/or on one end face with motionless diamond grains.
  • radially running grooves are formed, which extend into the peripheral edge and into which elongated diamonds are inserted and fixed.
  • the elongated diamonds are attached to the dressing wheel with an adhesive and then attached by electroplating metal.
  • the edge area of the diamond dressing wheel has a triangular cross-section, so that the surface covered with diamond grains Face is worn asymmetrically with the result that regrinding is absolutely necessary.
  • a dressing or dressing process can be carried out with a dressing tool, which can be used when producing new vitrified and vitrified-bonded grinding wheels or when machining them.
  • the WO 2008/101263 A1 relates to a dressing tool for the surface treatment of grinding tools with a round body which has one or more dressing surfaces which are at least partially coated with extremely hard cutting materials, e.g. B. diamond single crystal grains are occupied and have a plurality of depressions, in which edge protection elements are used and fixed.
  • the polycrystalline edge protection elements are embedded in the base body in a positive and non-positive manner, with the depressions being adapted to the geometric shape of the polycrystalline edge protection elements.
  • the EP 1 716 973 A1 relates to an opposite end face dressing tool having first and second cylindrical end face portions coaxially fixed to peripheral portions on opposite end faces of a disk-like base rotatably about an axis of rotation for dressing grinding faces on opposite ends of a grinding wheel.
  • the dressing tool is characterized in that the first end face dressing portion is composed of a cylindrical first base body which physically protrudes from a peripheral portion on an end face of a disc-like base coaxially with the axis of rotation thereof, and a first grinding base layer in which numerous diamond grinding grits with a binder are bonded to a Outer surface of the first base body are glued.
  • the second end face dressing portion in the cylindrical second base body which physically protrudes from a peripheral portion on the other end face of the base coaxially with the axis of rotation, is composed of a second abrasive-grain layer in which numerous diamond abrasive grains are bonded to an inner surface of the second base body with a bonding agent are.
  • the DE 32 40 356 A1 relates to a grinding tool for processing brittle-hard media, in particular for fine processing of glass and quartz, consisting of a body fitted with diamond pellets. The gaps between the diamond pellets and a filler with such. B. kieselguhr, enriched and abrasive additives provided gravel resin poured out so that the grinding tool has a closed surface.
  • a dressing tool referred to as a dressing blade is from DE 11 2005 001 119 B4 known, which consists of a plate-shaped metal shaft as a base and a metal extension to which a brazed metal compound of super abrasive grains z. B. is bound from diamond or cubic boron nitride.
  • a rotating dressing tool after the DE 609 14 766 T2 has a core and a grinding edge to which diamond grains are bonded by means of an active braze, which are exposed in a single layer on both sides of the tool.
  • a self-supporting functional covering has a porous binding matrix evenly interspersed with grains of hard material, in which there are additionally embedded reinforcement elements made of a hard material to stabilize the functional covering.
  • the present invention is based on the object of further developing a dressing tool of the type mentioned at the outset in such a way that high wear resistance and improved profile stability can be achieved with simple manufacturability.
  • Service friendliness should also be improved.
  • a constant effective width should be available over the entire service life without regrinding.
  • the object is essentially achieved by the features of claim 1 .
  • the carrier is formed by an annular web projecting from the base body.
  • the hard grains and the dressing elements are connected to the carrier by the brazed metal and/or ceramic compound.
  • the thickness of the layer formed by the hard grains is equal to the thickness D of the dressing elements.
  • the combination of hard grains and platelet or rod-shaped dressing elements combined with the circular web as a carrier allows precise and reproducible dressing and profiling with high stability. Wear and dressing properties are optimized so that a high profile retention or dressing tool contour can be achieved over a long period of time. Regrinding is not necessary, so that the ease of servicing is improved compared to the prior art.
  • An annular web as a carrier according to the invention cannot be provided with a porous binding matrix according to the prior art.
  • the dressing elements are cuboid, so that an outer surface of the dressing elements and protruding tips of the hard grains run in a common plane.
  • the dressing elements can also have a cylinder, ellipsoid or prism shape.
  • the dressing elements consist of diamond or contain diamond, the dressing elements preferably being produced synthetically, as in the CVD (Chemical Vapor Deposition) or HPHT (High Pressure High Temperature) process.
  • CVD Chemical Vapor Deposition
  • HPHT High Pressure High Temperature
  • the dressing elements are distributed radially, in particular distributed at equal distances on the carrier.
  • the dressing elements should start from the front area of the carrier and be surrounded by the hard grains both laterally and facing away from the front area.
  • the hard grains and the dressing elements are fixed on a side surface of the web-shaped carrier by the hard-soldered metal and/or ceramic compound. It can also be provided that the hard grains and the dressing elements are connected on opposite side surfaces of the web-shaped carrier by the hard-soldered metal and/or ceramic connection, so that a dressing ring with two layers designed as working surfaces is formed transversely to the grinding direction.
  • the hard grains should be at least one of a material from the group of natural diamond, synthetic diamond, cubic boron nitride (CBN) or cemented carbide act of any kind.
  • the layer may have one or more layers of the hard grains.
  • the base body should be made of steel, tool steel, tungsten carbide or alloys suitable for machine tool purposes that contain iron and/or molybdenum and/or tungsten and/or alloys of metals.
  • the base body can preferably also be made of a ceramic material, in particular an oxide ceramic from the group consisting of aluminum oxide (Al 2 O 3 ), zirconium dioxide (ZrO 2 ), titanium (IV) oxide (TiO 2 ), magnesium oxide (MgO), zinc oxide (ZnO), aluminum titanate (Al 2 O 3 + TiO 2 ) and/or barium titanate (BrO + TiO 2 ).
  • a brazing material should be used that contains at least one metal from the group of copper, aluminum, silver, tin, silicon, iron and an active metal component from the group of titanium, titanium nitride, chromium, zirconium or ceramic.
  • Geometrically preferred arrangements of the rod-shaped or plate-shaped dressing elements are present when the longitudinal axes of successive dressing elements form an angle ⁇ in the range 2° ⁇ 45°, preferably 5° ⁇ 10°, particularly preferably 6°, depending on the diameter of the dressing disc ⁇ ⁇ ⁇ 7°.
  • the carrier on which the hard grains and the dressing elements are fastened by brazing, is preferably formed by a web projecting from the base body.
  • the dressing tool 10 consists of a disc-shaped base body 12 which is rotated about an axis 14 which passes through the plane of the drawing perpendicularly.
  • the base body 12 has a peripheral, annular support 16 with a lateral layer 18, which consists of hard grains 20, hereinafter referred to as diamond grains 20, and geometrically defined or undefined shapes having, preferably flake or rod-shaped dressing elements 22.
  • the diamond grains 20 and the dressing elements 22 are each connected to a side surface of the carrier 16 by a hard-soldered metal connection in order to form the uniformly closed layer 18 .
  • the peripheral, annular carrier 16 with the layer 18 forms a dressing ring.
  • the platelets or rod-shaped dressing elements are in the 1 indicated by evenly distributed black lines 22.
  • the diamond grains 20 are connected to the carrier 16 of the base body 12 between these and the backs of the platelets or rod-shaped dressing elements 18 .
  • the dressing elements 22 and the diamond grains 20 can be connected to the carrier 16 in one operation, but also one after the other. Irrespective of this, it is provided that, for the purpose of soldering, the edge region is first provided with a soldering material that enables hard soldering. The base body 12 with the placed hard material grains 20 and dressing elements 22 is then introduced into a vacuum chamber in which the brazing is carried out.
  • a brazing material should be used that contains at least one metal, e.g. from the group of copper, silver, tin, silicon, iron and an active metal component, e.g. from the group of titanium, titanium nitride, zirconium, chromium or ceramics.
  • the diamond grains are, in particular, natural or synthetic diamond grains and cubic boron nitride (CBN).
  • the rod-shaped dressing elements 22 consist, in particular, of synthetic diamond, such as CVD, without this being a limitation.
  • suitable ultra-hard materials such as polycrystalline diamond (PCD) or monocrystalline diamond, are also possible, with the dressing elements preferably consisting of diamond or containing diamond.
  • FIGs 2 to 4 are sectional views and details of preferred embodiments of disc-shaped rotatable dressing tools 100 and 200 can be seen, which correspond to the 1 distributed on the carrier, in addition to diamond grains 120, 220, also have platelet or rod-shaped dressing elements 122, 222.
  • the lamina-like or rod-shaped dressing elements 122, 222 are preferably distributed equidistantly around the circumference, with the longitudinal axes of successive dressing elements in the exemplary embodiment enclosing an angle of between 6° and 7°, as can be seen from the illustration according to FIG 1 results.
  • the dressing tool 100 has a disk-shaped base body 112 with a peripheral, radially projecting web-shaped carrier 116, which forms an edge.
  • the diamond grains 120 and the dressing elements 122 are then fastened by hard soldering to one of the lateral annular surfaces 124 formed by the carrier.
  • the diamond grains 122 surround the dressing elements 122 not only laterally, but also in their rear edge regions 126. At the front, the dressing elements 122 merge flush into an end face 128 of the web-shaped carrier 116 .
  • the web forming the carrier 116 starts from a section 130 of the base body which is triangular in section, the boundary surfaces enclosing an angle of 120°, for example, which ensures the desired stability for the carrier.
  • Figures 4 and 5 differs from that of Figures 2 and 3 to the effect that the circular ring-shaped ridge forming the carrier 216 is beveled at the end face (surface 226), the outermost edge 228 merging into the end face 230 of the dressing element 222, like that figure 5 clarified.
  • the web forming the carrier 216 also starts from boundary surfaces of the base body 212, which enclose an angle of, for example, 120°, as can be seen from the drawing.
  • the figure 5 also makes it clear that the diamond grains 222 surround the dressing element 218 on the back.
  • FIG. 6 shows a front view of a third embodiment of a rotatable dressing tool 300, consisting of a disc-shaped base body 312, which is rotated about the axis 14, which perpendicularly passes through the plane of the drawing.
  • FIG. 7 to 9 sectional views or details of the rotatable dressing tool 300 can be seen, the base body 312 having a peripherally encircling web-shaped carrier 316 with lateral layers 318.1, 318.2, each of which consists of hard grains 320.1, 320.2, such as diamond grains, and rod-shaped dressing elements 222.1, 322.1. These are each connected to a side surface 324.1, 324.2 of the carrier 316 by a hard-soldered metal and/or ceramic connection.
  • the dressing elements 122, 222, 322 should have a thickness D between 0.3 mm and 8 mm and a length L between 3.0 mm and 10 mm.
  • the width should roughly correspond to the thickness so that the rod geometry is straight.
  • the rod-shaped dressing element 122, 222, 322 should in particular consist of synthetic diamond, without this being a limitation.
  • the base body 12, 112, 212, 312 should be made of steel, in particular tool steel or other metal alloys suitable for machine tool purposes, which in particular contain iron and/or molybdenum and/or tungsten and/or alloys of metals and other elements such as steel, tungsten/copper and similar.
  • the figures also show that the outer surfaces of the rod-shaped dressing elements 122, 222, 322 run in a plane in which the outer surface of the layer in which the hard grains 120, 220, 320 are located also runs.
  • both the dressing elements 122, 222, 322 and the hard grains 120, 220, 320 are connected to the carrier 116, 216, 316 by a hard-soldered metal and/or ceramic connection.

Description

Die Erfindung bezieht sich auf ein Abrichtwerkzeug nach dem Oberbegriff des Anspruchs 1.The invention relates to a dressing tool according to the preamble of claim 1.

Ein Abrichtwerkzeug der eingangs genannten Art ist aus der DE 38 11 784 A1 bekannt. Das Abrichtwerkzeug in Form einer Abrichtrolle umfasst im Wesentlichen einen kreiszylindrischen Grundkörper mit einer flachen Ringscheibe, auf dessen Umfang Diamanten angeordnet sind und eine zur Achse der Abrichtrolle parallele, axiale Bearbeitungsfläche definieren.A dressing tool of the type mentioned is from DE 38 11 784 A1 famous. The dressing tool in the form of a dressing roller essentially comprises a circular-cylindrical base body with a flat ring disk, on the circumference of which diamonds are arranged and which define an axial machining surface parallel to the axis of the dressing roller.

Die DE 2 98 19 006 U1 betrifft eine Diamant-Abrichtscheibe, bestehend aus einem rotationssymmetrischen Körper, der auf seiner Umfangsfläche und/oder auf seiner einen Stirnseite mit reglos geformten Diamantkörnern belegt ist. In einer Stirnseite der Abrichtscheibe sind radial verlaufende Nuten eingeformt, die sich bis in die Umfangskante erstrecken und in welche längliche Diamanten eingelegt und befestigt sind. Die länglichen Diamanten werden mit einem Kleber an der Abrichtscheibe angeheftet und anschließend durch galvanischen Metallauftrag befestigt. Der Randbereich der Diamant-Abrichtscheibe ist im Querschnitt dreieckförmig ausgebildet, so dass die mit Diamantkörnern belegte Stirnseite unsymmetrisch abgenutzt wird mit der Folge, dass ein Nachschleifen zwingend notwendig ist.the DE 2 98 19 006 U1 relates to a diamond dressing disk, consisting of a rotationally symmetrical body which is coated on its peripheral surface and/or on one end face with motionless diamond grains. In one end face of the dressing disk, radially running grooves are formed, which extend into the peripheral edge and into which elongated diamonds are inserted and fixed. The elongated diamonds are attached to the dressing wheel with an adhesive and then attached by electroplating metal. The edge area of the diamond dressing wheel has a triangular cross-section, so that the surface covered with diamond grains Face is worn asymmetrically with the result that regrinding is absolutely necessary.

Mit einem Abrichtwerkzeug kann ein Abrichten oder Abrichtvorgang durchgeführt werden, das bzw. der beim Herstellen von neuen oder beim Bearbeiten von im Einsatz befindlichen keramischen und keramisch gebundenen Schleifscheiben zur Anwendung gelangen kann.A dressing or dressing process can be carried out with a dressing tool, which can be used when producing new vitrified and vitrified-bonded grinding wheels or when machining them.

Die WO 2008/101263 A1 betrifft ein Abrichtwerkzeug zur Oberflächenbehandlung von Schleifwerkzeugen mit einem Rundkörper, welches eine oder mehrere Abrichtflächen aufweist, die zumindest teilweise mit hochharten Schneidstoffen z. B. Diamant-Einkristallkörnern besetzt sind und eine Vielzahl von Vertiefungen aufweisen, in welche Kantenschutzelemente eingesetzt und fixiert sind. Die polykristallinen Kantenschutzelemente sind in dem Grundkörper formschlüssig und kraftschlüssig eingebetet, wobei die Vertiefungen an die geometrische Form der polykristallinen Kantenschutzelemente angepasst sind.the WO 2008/101263 A1 relates to a dressing tool for the surface treatment of grinding tools with a round body which has one or more dressing surfaces which are at least partially coated with extremely hard cutting materials, e.g. B. diamond single crystal grains are occupied and have a plurality of depressions, in which edge protection elements are used and fixed. The polycrystalline edge protection elements are embedded in the base body in a positive and non-positive manner, with the depressions being adapted to the geometric shape of the polycrystalline edge protection elements.

Die EP 1 716 973 A1 betrifft ein Abrichtwerkzeug für entgegengesetzte Endflächen, das einen ersten und einen zweiten zylindrischen Endflächenabschnitt hat, die an Umfangsabschnitten an entgegengesetzten Endflächen einer scheibenartigen Basis um eine Drehachse herum drehbar zum Abrichten von Schleifflächen an entgegengesetzten Enden eines Schleifrades koaxial befestigt sind. Das Abrichtwerkzeug zeichnet sich dadurch aus, dass der erste Endflächenabrichtabschnitt aus einem zylindrischen ersten Basiskörper, der körperlich von einem Umfangsabschnitt an einer Endfläche einer scheibenartigen Basis koaxial zu der Drehachse derselben vorragt und einer ersten Schleifgrundschicht zusammengesetzt ist, in der zahlreiche Diamantenschleifkörper mit einem Bindemittel an einer Außenfläche des ersten Basiskörpers angeklebt sind. Ferner ist vorgesehen, dass der zweite Endflächenabrichtabschnitt im zylindrischen zweiten Basiskörper, der körperlich von einem Umfangabschnitt an der anderen Endfläche der Basis koaxial zu der Drehachse vorragt und einer zweiten Schleifkornschicht zusammengesetzt ist, in der zahlreiche Diamantschleifkörper mit einem Bindemittel an eine Innenfläche des zweiten Basiskörpers angeklebt sind.the EP 1 716 973 A1 relates to an opposite end face dressing tool having first and second cylindrical end face portions coaxially fixed to peripheral portions on opposite end faces of a disk-like base rotatably about an axis of rotation for dressing grinding faces on opposite ends of a grinding wheel. The dressing tool is characterized in that the first end face dressing portion is composed of a cylindrical first base body which physically protrudes from a peripheral portion on an end face of a disc-like base coaxially with the axis of rotation thereof, and a first grinding base layer in which numerous diamond grinding grits with a binder are bonded to a Outer surface of the first base body are glued. It is further provided that the second end face dressing portion in the cylindrical second base body, which physically protrudes from a peripheral portion on the other end face of the base coaxially with the axis of rotation, is composed of a second abrasive-grain layer in which numerous diamond abrasive grains are bonded to an inner surface of the second base body with a bonding agent are.

Die DE 32 40 356 A1 betrifft ein Schleifwerkzeug für die Bearbeitung sprödharter Medien, insbesondere zur Feinbearbeitung von Glas und Quarz, bestehend aus einem mit Diamantpellets bestückten Körper. Dabei sind die Zwischenräume zwischen den Diamantpellets und einem mit Füllstoffen, wie z. B. Kieselgur, angereicherten und abtragswirkenden Zusätzen versehenen Kiesharz so ausgegossen, dass das Schleifwerkzeug eine geschlossene Oberfläche aufweist.the DE 32 40 356 A1 relates to a grinding tool for processing brittle-hard media, in particular for fine processing of glass and quartz, consisting of a body fitted with diamond pellets. The gaps between the diamond pellets and a filler with such. B. kieselguhr, enriched and abrasive additives provided gravel resin poured out so that the grinding tool has a closed surface.

Ein als Abrichtklinge bezeichnetes Abrichtwerkzeug ist aus der DE 11 2005 001 119 B4 bekannt, das aus einem plattenförmigen Metallschaft als Basis und einem aus Metall bestehenden Ansatzstück besteht, an dem eine hartgelötete Metallverbindung von Superschleifkörnern z. B. aus Diamant oder kubischen Bornitrid gebunden ist.A dressing tool referred to as a dressing blade is from DE 11 2005 001 119 B4 known, which consists of a plate-shaped metal shaft as a base and a metal extension to which a brazed metal compound of super abrasive grains z. B. is bound from diamond or cubic boron nitride.

Ein drehendes Abrichtwerkzeug nach der DE 609 14 766 T2 weist einen Kern und einen Schleifrand auf, an dem mittels Aktivhartlots Diamantkörner gebunden sind, die einschichtig auf beiden Seiten des Werkzeuges freiliegen.A rotating dressing tool after the DE 609 14 766 T2 has a core and a grinding edge to which diamond grains are bonded by means of an active braze, which are exposed in a single layer on both sides of the tool.

Bei einem Abrichtwerkzeug nach der DE 10 2010 025 677 A1 weist ein selbsttragender Funktionsbelag eine gleichmäßig mit Hartstoffkörnern durchsetzte poröse Bindungsmatrix auf, in der zusätzlich eingebettete Armierungselemente aus einem Hartstoffmaterial zur Stabilisierung des Funktionsbelages vorliegen.With a dressing tool after the DE 10 2010 025 677 A1 a self-supporting functional covering has a porous binding matrix evenly interspersed with grains of hard material, in which there are additionally embedded reinforcement elements made of a hard material to stabilize the functional covering.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, ein Abrichtwerkzeug der eingangs genannten Art so weiterzubilden, dass bei einfacher Herstellbarkeit eine hohe Verschleißfestigkeit und verbesserte Profilhaltigkeit erzielbar ist. Auch soll die Servicefreundlichkeit verbessert werden. Insbesondere soll über die gesamte Lebensdauer eine konstante Wirkbreite ohne Nachschleifen zur Verfügung stehen.The present invention is based on the object of further developing a dressing tool of the type mentioned at the outset in such a way that high wear resistance and improved profile stability can be achieved with simple manufacturability. Service friendliness should also be improved. In particular, a constant effective width should be available over the entire service life without regrinding.

Die Aufgabe wird gemäß der Erfindung im Wesentlichen durch die Merkmale des Anspruchs 1 gelöst. Der Träger wird durch einen von dem Grundkörper abragenden kreisringförmigen Steg gebildet. Die harten Körner sowie die Abrichtelemente sind durch die hartgelötete Metall- und/oder Keramikverbindung mit dem Träger verbunden. Die Dicke der durch die harten Körner gebildeten Schicht ist gleich Dicke D der Abrichtelemente.According to the invention, the object is essentially achieved by the features of claim 1 . The carrier is formed by an annular web projecting from the base body. The hard grains and the dressing elements are connected to the carrier by the brazed metal and/or ceramic compound. The thickness of the layer formed by the hard grains is equal to the thickness D of the dressing elements.

Durch die Kombination aus harten Körnern und plättchen- oder stabförmigen Abrichtelementen verbunden mit dem kreisförmigen Steg als Träger kann bei hoher Standfestigkeit ein präzises und reproduzierbares Abrichten und Profilieren erfolgen. Verschleiß- und Abrichteigenschaften sind optimiert, so dass eine hohe Profilhaltigkeit bzw. Abrichtwerkzeugkontur über einen langen Zeitraum erzielbar ist. Ein Nachschleifen ist nicht erforderlich, so dass gegenüber dem Stand der Technik die Servicefreundlichkeit verbessert wird. Ein kreisringförmiger Steg als Träger gemäß der Erfindung kann mit einer porösen Bindungsmatrix gemäß Stand der Technik nicht bereitgestellt werden.The combination of hard grains and platelet or rod-shaped dressing elements combined with the circular web as a carrier allows precise and reproducible dressing and profiling with high stability. Wear and dressing properties are optimized so that a high profile retention or dressing tool contour can be achieved over a long period of time. Regrinding is not necessary, so that the ease of servicing is improved compared to the prior art. An annular web as a carrier according to the invention cannot be provided with a porous binding matrix according to the prior art.

Eine bevorzugte Ausführungsform sieht vor, dass die Abrichtelemente quaderförmig ausgebildet sind, so dass eine Außenfläche der Abrichtelemente und vorstehende Spitzen der harten Körner in einer gemeinsamen Ebene verlaufen. Die Abrichtelemente können auch eine Zylinder-, Ellipsoid- oder Prismenform aufweisen.A preferred embodiment provides that the dressing elements are cuboid, so that an outer surface of the dressing elements and protruding tips of the hard grains run in a common plane. The dressing elements can also have a cylinder, ellipsoid or prism shape.

Insbesondere bestehen die Abrichtelemente aus Diamant oder enthalten Diamant, wobei bevorzugterweise die Abrichtelemente synthetisch, wie im CVD- (Chemical Vapor Deposition) oder HPHT- (High Pressure High Temperature) Verfahren, hergestellt sind.In particular, the dressing elements consist of diamond or contain diamond, the dressing elements preferably being produced synthetically, as in the CVD (Chemical Vapor Deposition) or HPHT (High Pressure High Temperature) process.

Zur Erzeugung von optimierten Oberflächentopographien an dem zu bearbeitenden Schleifkörper ist vorgesehen, dass die Abrichtelemente, insbesondere im äquidistanten Abstand am Träger verteilt radial ausgerichtet sind. Dabei sollten insbesondere die Abrichtelemente vom Stirnbereich des Trägers ausgehen und sowohl seitlich als auch stirnbereichsabgewandt von den harten Körnern umgeben sein.In order to produce optimized surface topographies on the grinding body to be machined, it is provided that the dressing elements are distributed radially, in particular distributed at equal distances on the carrier. In particular, the dressing elements should start from the front area of the carrier and be surrounded by the hard grains both laterally and facing away from the front area.

Die harten Körner sowie die Abrichtelemente sind auf einer Seitenfläche des stegförmigen Trägers durch die hartgelötete Metall- und/oder Keramikverbindung fixiert. Auch kann vorgesehen sein, dass die harten Körner sowie die Abrichtelemente auf gegenüberliegenden Seitenflächen des stegförmigen Trägers durch die hartgelötete Metall- und/oder Keramikverbindung verbunden sind, so dass ein Abrichtring mit zwei als Arbeitsflächen ausgebildeten Schichten quer zur Schleifrichtung gebildet wird.The hard grains and the dressing elements are fixed on a side surface of the web-shaped carrier by the hard-soldered metal and/or ceramic compound. It can also be provided that the hard grains and the dressing elements are connected on opposite side surfaces of the web-shaped carrier by the hard-soldered metal and/or ceramic connection, so that a dressing ring with two layers designed as working surfaces is formed transversely to the grinding direction.

Bei den harten Körnern sollte es sich zumindest um solche aus einem Material der Gruppe natürlicher Diamant, synthetischer Diamant, kubisches Bornitrid (CBN) oder Hartmetall jeder Beschaffenheit handeln. Vorzugsweise kann die Schicht ein oder mehrere Lagen der harten Körner aufweisen.The hard grains should be at least one of a material from the group of natural diamond, synthetic diamond, cubic boron nitride (CBN) or cemented carbide act of any kind. Preferably, the layer may have one or more layers of the hard grains.

Der Grundkörper sollte aus Stahl, Werkzugstahl, Wolframcarbid oder für Werkzeugmaschinenzwecke geeignete Legierungen bestehen, die Eisen und/oder Molybdän und/oder Wolfram und/oder Legierungen aus Metallen enthalten. Vorzugsweise kann der Grundkörper auch aus einem Keramikmaterial, insbesondere einer Oxidkeramik aus der Gruppe Aluminiumoxid (Al2O3), Zirkoniumdioxid (ZrO2), Titan (IV) - Oxid (TiO2), Magnesiumoxid (MgO), Zinkoxid (ZnO), Aluminiumtitanat (Al2O3 + TiO2) und/oder Bariumtitanat (BrO + TiO2), hergestellt sein.The base body should be made of steel, tool steel, tungsten carbide or alloys suitable for machine tool purposes that contain iron and/or molybdenum and/or tungsten and/or alloys of metals. The base body can preferably also be made of a ceramic material, in particular an oxide ceramic from the group consisting of aluminum oxide (Al 2 O 3 ), zirconium dioxide (ZrO 2 ), titanium (IV) oxide (TiO 2 ), magnesium oxide (MgO), zinc oxide (ZnO), aluminum titanate (Al 2 O 3 + TiO 2 ) and/or barium titanate (BrO + TiO 2 ).

Zum Hartlöten, insbesondere Vakuumhartlöten, sollte ein Lotmaterial verwendet werden, das zumindest ein Metall aus der Gruppe Kupfer, Aluminium, Silber, Zinn, Silizium, Eisen sowie eine Aktivmetallkomponente aus der Gruppe Titan, Titannitrid, Chrom, Zirkonium oder Keramik enthält.For brazing, especially vacuum brazing, a brazing material should be used that contains at least one metal from the group of copper, aluminum, silver, tin, silicon, iron and an active metal component from the group of titanium, titanium nitride, chromium, zirconium or ceramic.

Geometrisch bevorzugte Anordnungen der stäbchenförmigen bzw. plattenförmigen Abrichtelemente liegen dann vor, wenn die Längsachsen aufeinanderfolgender Abrichtelemente in Abhängigkeit eines Durchmessers der Abrichtronde einen Winkel α im Bereich 2° ≤ α ≤ 45°, vorzugsweise 5° ≤ α ≤ 10°, besonders bevorzugt 6° ≤ α ≤ 7°, einschließen.Geometrically preferred arrangements of the rod-shaped or plate-shaped dressing elements are present when the longitudinal axes of successive dressing elements form an angle α in the range 2°≦α≦45°, preferably 5°≦α≦10°, particularly preferably 6°, depending on the diameter of the dressing disc ≤ α ≤ 7°.

Bevorzugterweise wird der Träger, auf den die harten Körner und die Abrichtelemente durch Hartlöten befestigt sind, durch einen von dem Grundkörper abragenden Steg gebildet. Hierdurch ergibt sich insbesondere der Vorteil, dass problemlos gewünschte Profilierungen bzw. Abrichtflächen bearbeitet werden können.The carrier, on which the hard grains and the dressing elements are fastened by brazing, is preferably formed by a web projecting from the base body. In particular, this results in the advantage that desired profiling or dressing surfaces can be machined without any problems.

Das Abrichtelement sollte eine Dicke D mit 0,3 mm ≤ D ≤ 8 mm, insbesondere D = 1,2 mm, und/oder eine Länge L mit 3 mm ≤ L ≤ 10 mm, insbesondere L = 5 mm, und /oder eine Breite B mit 0,3 mm ≤ B ≤ 8 mm, insbesondere B = 1,2 mm, aufweisen.The dressing element should have a thickness D of 0.3 mm≦D≦8 mm, in particular D=1.2 mm, and/or a length L of 3 mm≦L≦10 mm, in particular L=5 mm, and/or a Width B with 0.3 mm ≤ B ≤ 8 mm, in particular B = 1.2 mm.

Weitere Einzelheiten, Vorteile und Merkmale der Erfindung ergeben sich nicht nur aus den Ansprüchen, den diesen zu entnehmenden Merkmalen - für sich und/oder in Kombination - , sondern auch aus der nachfolgenden Beschreibung von der Zeichnung zu entnehmenden bevorzugten Ausfuhrungsbeispielen.Further details, advantages and features of the invention result not only from the claims, the features to be taken from them - individually and/or in combination - but also from the following description of the preferred exemplary embodiments to be taken from the drawing.

Es zeigen:

Fig. 1
eine Vorderansicht auf eine erste Ausführungsform eines Abrichtwerkzeuges,
Fig. 2
einen Schnitt durch das Abrichtwerkzeug gemäß Fig. 1,
Fig. 3
eine Einzelheit A des Abrichtwerkzeuges gemäß Fig. 2,
Fig. 4
einen Schnitt durch eine zweite Ausführungsform eines Abrichtwerkzeuges,
Fig. 5
eine Einzelheit A des Abrichtwerkzeuges gemäß Fig. 4,
Fig. 6
eine Vorderansicht einer dritten Ausführungsform eines Abrichtwerkzeuges,
Fig. 7
eine Draufsicht auf das Abrichtwerkzeug gemäß Fig. 6 aus Ansicht B,
Fig. 8
einen Schnitt durch das Abrichtwerkzeug gemäß Fig. 6 und
Fig. 9
eine Einzelheit des Abrichtwerkzeuges gemäß Fig. 8.
Show it:
1
a front view of a first embodiment of a dressing tool,
2
according to a section through the dressing tool 1 ,
3
a detail A of the dressing tool according to FIG 2 ,
4
a section through a second embodiment of a dressing tool,
figure 5
a detail A of the dressing tool according to FIG 4 ,
6
a front view of a third embodiment of a dressing tool,
7
a plan view of the dressing tool according to FIG 6 from view B,
8
according to a section through the dressing tool 6 and
9
a detail of the dressing tool according to 8 .

Den Figuren, in denen für gleiche Elemente grundsätzlich gleiche Bezugszeichen verwendet werden, sind Ausführungen von als Abrichtrollen zu bezeichnenden rotierenden Abrichtwerkzeugen in Scheibenform zu entnehmen, mit denen ein Abrichten bzw. Profilieren von insbesondere keramischen und keramisch gebundenen Schleifscheiben durchgeführt wird.The figures, in which basically the same reference symbols are used for the same elements, show designs of rotating dressing tools in disc form, referred to as dressing rollers, with which a dressing or profiling of in particular vitrified and vitrified-bonded grinding wheels is carried out.

Das Abrichtwerkzeug 10 besteht aus einem scheibenförmigen Grundkörper 12, der um eine Achse 14 gedreht wird, die senkrecht die Zeichenebene durchsetzt. Der Grundkörper 12 weist einen peripheren, kreisringförmigen Träger 16 mit einer seitlichen Schicht 18 auf, die aus harten Körnern 20, nachfolgend Diamantkörner 20 genannt, und geometrisch bestimmte oder unbestimmte Formen aufweisenden, vorzugsweise plättchen- oder stabförmigen Abrichtelementen 22 besteht. Die Diamantkörner 20 und die Abrichtelemente 22 sind jeweils durch eine hartgelötete Metallverbindung mit einer Seitenfläche des Trägers 16 zur Bildung der gleichmäßig geschlossenen Schicht 18 verbunden. Der periphere, kreisringförmige Träger 16 mit der Schicht 18 bildet einen Abrichtring. Die plättchen- oder stabförmigen Abrichtelemente sind in der Fig. 1 durch gleichmäßig verteilte schwarze Striche 22 angedeutet. Zwischen diesen und den Rückseiten der plättchen - oder stabförmigen Abrichtelemente 18 sind die Diamantkörner 20 mit dem Träger 16 des Grundkörpers 12 verbunden.The dressing tool 10 consists of a disc-shaped base body 12 which is rotated about an axis 14 which passes through the plane of the drawing perpendicularly. The base body 12 has a peripheral, annular support 16 with a lateral layer 18, which consists of hard grains 20, hereinafter referred to as diamond grains 20, and geometrically defined or undefined shapes having, preferably flake or rod-shaped dressing elements 22. The diamond grains 20 and the dressing elements 22 are each connected to a side surface of the carrier 16 by a hard-soldered metal connection in order to form the uniformly closed layer 18 . The peripheral, annular carrier 16 with the layer 18 forms a dressing ring. The platelets or rod-shaped dressing elements are in the 1 indicated by evenly distributed black lines 22. The diamond grains 20 are connected to the carrier 16 of the base body 12 between these and the backs of the platelets or rod-shaped dressing elements 18 .

Die Abrichtelemente 22 und die Diamantkörner 20 können in einem Arbeitsgang, jedoch auch nacheinander mit dem Träger 16 verbunden werden. Unabhängig hiervon ist vorgesehen, dass zum Löten der Randbereich zunächst mit einem das Hartlöten ermöglichenden Lotmaterial versehen wird. Der Grundkörper 12 mit den platzierten Hartstoffkörnern 20 und Abrichtelementen 22 wird sodann in eine Vakuumkammer eingebracht, in dem das Hartlöten durchgeführt wird.The dressing elements 22 and the diamond grains 20 can be connected to the carrier 16 in one operation, but also one after the other. Irrespective of this, it is provided that, for the purpose of soldering, the edge region is first provided with a soldering material that enables hard soldering. The base body 12 with the placed hard material grains 20 and dressing elements 22 is then introduced into a vacuum chamber in which the brazing is carried out.

Zum Hartlöten, insbesondere Vakuumhartlöten sollte ein Lotmaterial verwendet werden, das zumindest ein Metall z.B. aus der Gruppe Kupfer, Silber, Zinn, Silizium, Eisen sowie eine Aktivmetall-Komponente z.B. aus der Gruppe Titan, Titannitrid, Zirkonium, Chrom oder Keramik enthält.For brazing, especially vacuum brazing, a brazing material should be used that contains at least one metal, e.g. from the group of copper, silver, tin, silicon, iron and an active metal component, e.g. from the group of titanium, titanium nitride, zirconium, chromium or ceramics.

Bei den Diamantkörnern handelt es sich insbesondere um natürliche oder, synthetische Diamantkörnungen sowie kubisches Bornitrid (CBN).The diamond grains are, in particular, natural or synthetic diamond grains and cubic boron nitride (CBN).

Die stabförmigen Abrichtelemente 22 bestehen insbesondere aus synthetischem Diamant, wie CVD, ohne dass hierdurch eine Beschränkung erfolgt. Andere geeignete ultraharte Materialien, wie polykristalliner Diamant (PKD) oder monokristalliner Diamant, kommen gleichfalls in Frage, wobei die Abrichtelemente bevorzugterweise aus Diamant bestehen oder Diamant enthalten sollten.The rod-shaped dressing elements 22 consist, in particular, of synthetic diamond, such as CVD, without this being a limitation. Other suitable ultra-hard materials, such as polycrystalline diamond (PCD) or monocrystalline diamond, are also possible, with the dressing elements preferably consisting of diamond or containing diamond.

Den Fig. 2 bis 4 sind Schnittdarstellungen bzw. Einzelheiten von bevorzugten Ausführungsformen scheibenförmigen drehbaren Abrichtwerkzeugen 100 bzw. 200 zu entnehmen, die entsprechend der Fig. 1 am Träger verteilt neben Diamantkörnern 120, 220 auch plättchen- oder stabförmige Abrichtelemente 122, 222 aufweisen. Dabei sind die plättchen- oder stabförmigen Abrichtelemente 122, 222 vorzugsweise äquidistant um den Umfang herum verteilt, wobei die Längsachsen aufeinanderfolgender Abrichtelemente in dem Ausführungsbeispiel einen Winkel zwischen 6° und 7° einschließen sollten, wie sich aus der Darstellung gemäß Fig. 1 ergibt.The Figures 2 to 4 are sectional views and details of preferred embodiments of disc-shaped rotatable dressing tools 100 and 200 can be seen, which correspond to the 1 distributed on the carrier, in addition to diamond grains 120, 220, also have platelet or rod-shaped dressing elements 122, 222. The lamina-like or rod-shaped dressing elements 122, 222 are preferably distributed equidistantly around the circumference, with the longitudinal axes of successive dressing elements in the exemplary embodiment enclosing an angle of between 6° and 7°, as can be seen from the illustration according to FIG 1 results.

Das Abrichtwerkzeug 100 gemäß Fig. 2 und 3 weist einen scheibenförmigen Grundkörper 112 mit einem umlaufenden radial abragenden stegförmigen Träger 116 auf, der einen Rand bildet. Auf einer der von dem Träger gebildeten seitlichen Ringfläche 124 sind sodann die Diamantkörner 120 und die Abrichtelemente 122 durch Hartlöten befestigt.The dressing tool 100 according to FIG Figures 2 and 3 has a disk-shaped base body 112 with a peripheral, radially projecting web-shaped carrier 116, which forms an edge. The diamond grains 120 and the dressing elements 122 are then fastened by hard soldering to one of the lateral annular surfaces 124 formed by the carrier.

Durch die Fig. 1 und 3 wird erkennbar, dass die Diamantkörner 122 die Abrichtelemente 122 nicht nur seitlich, sondern auch in ihren rückseitigen Randbereichen 126 umgeben. Frontseitig gehen die Abrichtelemente 122 bündig in eine Stirnfläche 128 des stegförmigen Trägers 116 über.through the Figures 1 and 3 it can be seen that the diamond grains 122 surround the dressing elements 122 not only laterally, but also in their rear edge regions 126. At the front, the dressing elements 122 merge flush into an end face 128 of the web-shaped carrier 116 .

Der den Träger 116 bildende Steg geht von einem im Schnitt dreieckförmigen Abschnitt 130 des Grundkörpers aus, wobei die Begrenzungsflächen beispielhaft einen Winkel von 120° einschließen, wodurch die gewünschte Stabilität für den Träger sichergestellt ist.The web forming the carrier 116 starts from a section 130 of the base body which is triangular in section, the boundary surfaces enclosing an angle of 120°, for example, which ensures the desired stability for the carrier.

Das Ausführungsbeispiel der Fig. 4 und 5 unterscheidet sich von dem der Fig. 2 und 3 dahingehend, dass der den Träger 216 bildende umlaufende kreisringförmige Steg stirnseitig abgeschrägt ist (Fläche 226), wobei die äußerste Kante 228 in die Stirnfläche 230 des Abrichtelements 222 übergeht, wie die Fig. 5 verdeutlicht.The embodiment of Figures 4 and 5 differs from that of Figures 2 and 3 to the effect that the circular ring-shaped ridge forming the carrier 216 is beveled at the end face (surface 226), the outermost edge 228 merging into the end face 230 of the dressing element 222, like that figure 5 clarified.

Auch der den Träger 216 bildende Steg geht von Begrenzungsflächen des Grundkörpers 212 aus, die einen Winkel von beispielsweise 120° einschließen, wie sich aus der Zeichnung ergibt.The web forming the carrier 216 also starts from boundary surfaces of the base body 212, which enclose an angle of, for example, 120°, as can be seen from the drawing.

Die Fig. 5 verdeutlicht gleichfalls, dass die Diamantkörner 222 das Abrichtelement 218 rückseitig umgeben.the figure 5 also makes it clear that the diamond grains 222 surround the dressing element 218 on the back.

Fig. 6 zeigt eine Vorderansicht einer dritten Ausführungsform eines drehbaren Abrichtungswerkzeuges 300, bestehend aus einem scheibenförmigen Grundkörper 312, der um die Achse 14 gedreht wird, die senkrecht die Zeichenebene durchsetzt. 6 shows a front view of a third embodiment of a rotatable dressing tool 300, consisting of a disc-shaped base body 312, which is rotated about the axis 14, which perpendicularly passes through the plane of the drawing.

Den Fig. 7 bis 9 sind Schnittdarstellungen bzw. Einzelheiten des drehbaren Abrichtwerkzeuges 300 zu entnehmen, wobei der Grundkörper 312 einen peripher umlaufenden stegförmigen Träger 316 mit seitlichen Schichten 318.1, 318.2 aufweist, die jeweils aus harten Körnern 320.1, 320.2, wie Diamantkörnern und stabförmigen Abrichtelementen 222.1, 322.1, bestehen. Diese sind jeweils durch eine hartgelötete Metall- und/oder Keramikverbindung mit einer Seitenfläche 324.1, 324.2 des Trägers 316 verbunden.The Figures 7 to 9 sectional views or details of the rotatable dressing tool 300 can be seen, the base body 312 having a peripherally encircling web-shaped carrier 316 with lateral layers 318.1, 318.2, each of which consists of hard grains 320.1, 320.2, such as diamond grains, and rod-shaped dressing elements 222.1, 322.1. These are each connected to a side surface 324.1, 324.2 of the carrier 316 by a hard-soldered metal and/or ceramic connection.

Die Abrichtelemente 122, 222, 322 sollten eine Dicke D zwischen 0,3 mm und 8 mm und eine Länge L zwischen 3,0 mm und 10 mm aufweisen. Die Breite sollte in etwa der Dicke entsprechen, so dass sich eine Stabgeometrie in gerader Form ergibt.The dressing elements 122, 222, 322 should have a thickness D between 0.3 mm and 8 mm and a length L between 3.0 mm and 10 mm. The width should roughly correspond to the thickness so that the rod geometry is straight.

Das stabförmige Abrichtelement 122, 222, 322 sollte insbesondere aus synthetischem Diamant bestehen, ohne dass hierdurch eine Beschränkung erfolgt.The rod-shaped dressing element 122, 222, 322 should in particular consist of synthetic diamond, without this being a limitation.

Der Grundkörper 12, 112, 212, 312 sollte aus Stahl, insbesondere Werkzeugstahl oder sonstigen für Werkzeugmaschinenzwecke geeignete Metalllegierungen bestehen, die insbesondere Eisen und/oder Molybdän und/oder Wolfram und/oder Legierungen aus Metallen und anderen Elementen, wie Stahl, Wolfram/Kupfer und ähnlichen, enthalten.The base body 12, 112, 212, 312 should be made of steel, in particular tool steel or other metal alloys suitable for machine tool purposes, which in particular contain iron and/or molybdenum and/or tungsten and/or alloys of metals and other elements such as steel, tungsten/copper and similar.

Des Weiteren ergibt sich aus den Figuren, dass die Außenflächen der stäbchenförmigen Abrichtelemente 122, 222, 322 in einer Ebene verlaufen, in der auch die Außenfläche der Schicht verläuft, in der sich die harten Körner 120, 220, 320 befinden.The figures also show that the outer surfaces of the rod-shaped dressing elements 122, 222, 322 run in a plane in which the outer surface of the layer in which the hard grains 120, 220, 320 are located also runs.

Sowohl die Abrichtelemente 122, 222, 322 als auch die harten Körner 120, 220, 320 sind erwähntermaßen durch eine hartgelötete Metall- und/oder Keramikverbindung mit dem Träger 116, 216, 316 verbunden.As mentioned, both the dressing elements 122, 222, 322 and the hard grains 120, 220, 320 are connected to the carrier 116, 216, 316 by a hard-soldered metal and/or ceramic connection.

Claims (10)

  1. Dressing tool (10, 100, 200, 300) comprising a basic body (12, 112, 212, 312) in the form of a rotatable disk element with a carrier (16, 116, 216, 316), where said carrier (16, 116, 216, 316) is formed by a circular bar projecting from the basic body (12, 112, 212, 312) and having an all-round frontal area with a front face (128; 226, 228) and with at least one side face (124; 324), and where hard grains (120, 220,320), such as grains of diamond or cubic boron nitride (CBN), are bonded in a coating (18, 118, 218, 318) on the side face (124; 324) by a connection,
    wherein
    in addition to the hard grains (120, 220, 320) distributed in the coating (18, 118, 218, 318), one-piece plate-like or rod-like dressing elements (22, 122, 222, 312) of a hard material are connected by a brazed metal and/or ceramic connection to the side face (124; 324); the dressing elements (22, 122, 222, 312) on the front merge flush into the front face (128, 226) of the frontal area, extend from the frontal area of the carrier (16, 116, 216, 316) and are surrounded both at the side and facing away from the frontal area by the hard grains (120, 220, 320); the coating (18, 118, 218, 318) is an evenly closed coating with a constant effective width, where the outer face of the plate-like or rod-like dressing elements (22, 122, 222, 312) extends in a plane in which the outer face of the coating (18, 118, 218, 318) also extends and in which are located the hard grains (120, 220, 320) surrounding the dressing elements at the side and facing away from the frontal area, and where the thickness of the coating formed by the hard grains (120, 220, 320) is equal to the thickness D of the dressing elements (22, 122, 222, 312).
  2. Dressing tool according to claim 1,
    wherein
    the dressing elements (22, 122, 222, 312) consist of or contain diamond.
  3. Dressing tool according to claim 1 or 2,
    wherein
    the dressing elements (22, 122, 222, 312) have a cuboid, cylinder, ellipsoid or prism shape and are in particular synthetically manufactured such as in CVD or HPHT processes.
  4. Dressing tool according to at least one of the preceding claims,
    wherein
    the dressing elements (22, 122, 222, 312) are in particular aligned radially distributed on the carrier (16, 116, 216, 316) at equidistant intervals.
  5. Dressing tool according to at least one of the preceding claims,
    wherein
    the hard grains (312) and the dressing elements (312) are bonded and connected on opposite side faces (324) of the bar-like carrier (316) by the brazed metal and/or ceramic connection.
  6. Dressing tool according to at least one of the preceding claims,
    wherein
    the hard grains (120, 220, 320) consist of at least one material from the group of natural diamond, synthetic diamond, carbide, cubic boron nitride (CBN) or ultra-hard material.
  7. Dressing tool according to at least one of the preceding claims,
    wherein
    the basic body consists of metal, in particular tool steel, an alloy containing iron and/or molybdenum and/or tungsten and/or alloy from the group of metals or a ceramic material, in particular an oxide ceramic such as aluminium oxide (Al2O3), zirconium dioxide (ZrO2), titanium (IV) oxide (TiO2), magnesium oxide (MgO), zinc oxide (ZnO), aluminium titanate (Al2O3 + TiO2) and/or barium titanate (BrO + TiO2).
  8. Dressing tool according to at least one of the preceding claims,
    wherein
    the longitudinal axes of successive dressing elements (22, 122, 222, 312, 412, 512, 612) form an angle α in the range 4° ≤ α ≤ 45°, preferably 5° ≤ α ≤ 10°, particularly preferably 6° ≤ α ≤ 7°.
  9. Dressing tool according to at least one of the preceding claims,
    wherein
    the coating comprises one or more layers of hard grains.
  10. Dressing tool according to at least one of the preceding claims,
    wherein
    the dressing element (22, 122, 222, 312, 412, 512, 612) has the thickness D of 0.3 mm ≤ D ≤ 8 mm, in particular D = 1.2 mm and/or a length L of 3 mm ≤ L ≤ 10 mm, in particular L = 5 mm, and/or a width B of 0.3 mm ≤ B ≤ 8 mm, in particular B = 1.2 mm.
EP16769904.0A 2015-09-11 2016-09-12 Dressing tool Active EP3347163B1 (en)

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DE102015115407.2A DE102015115407A1 (en) 2015-09-11 2015-09-11 dressing tool
PCT/EP2016/071475 WO2017042395A1 (en) 2015-09-11 2016-09-12 Dressing tool

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Publication number Priority date Publication date Assignee Title
DE102017214278A1 (en) 2017-08-16 2019-02-21 ROT GmbH Dressing tool comprising a metallic base body with a peripheral edge or peripheral surface which is occupied by hard material elements
DE102017214279A1 (en) 2017-08-16 2019-02-21 ROT GmbH Dressing tool with traces of hard material

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD206098A1 (en) * 1982-02-23 1984-01-18 Heinz Kummer GRINDING TOOL FOR MACHINING SPROEDHARTER MEDIA
DE3811784A1 (en) * 1987-12-23 1989-07-06 Fortuna Werke Maschf Ag Dressing roll and method for dressing a grinding machine
ES2281596T3 (en) 1998-07-31 2007-10-01 Saint-Gobain Abrasives, Inc. ROTATING CONDITIONING TOOLS CONTAINING ABRASIVE GRAFTING.
DE29819006U1 (en) * 1998-10-26 1999-02-04 Kaiser Michael Dr Ing Diamond dressing wheel
EP1716973B1 (en) * 2004-02-18 2009-04-01 Toyoda Van Moppes Ltd. Double end face truing device, double end face truing tool, and double end face truing method
US20050260939A1 (en) 2004-05-18 2005-11-24 Saint-Gobain Abrasives, Inc. Brazed diamond dressing tool
AT504926B1 (en) * 2007-02-21 2009-10-15 Rappold Winterthur Technologie dressing tool
CH701596B1 (en) 2009-08-11 2013-08-15 Meister Abrasives Ag Dressing.

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