EP1285728A2 - Abrasive wheel - Google Patents

Abrasive wheel Download PDF

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Publication number
EP1285728A2
EP1285728A2 EP02405672A EP02405672A EP1285728A2 EP 1285728 A2 EP1285728 A2 EP 1285728A2 EP 02405672 A EP02405672 A EP 02405672A EP 02405672 A EP02405672 A EP 02405672A EP 1285728 A2 EP1285728 A2 EP 1285728A2
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EP
European Patent Office
Prior art keywords
receiving area
cutting body
center
grinding wheel
grinding
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
EP02405672A
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German (de)
French (fr)
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EP1285728B1 (en
EP1285728A3 (en
Inventor
Josef Nussbaumer
Rolf Spangenberg
Francois Boland
Jean-Pierre Chevalier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sa Carbodiam
Hilti AG
Original Assignee
Sa Carbodiam
Hilti AG
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Publication date
Application filed by Sa Carbodiam, Hilti AG filed Critical Sa Carbodiam
Publication of EP1285728A2 publication Critical patent/EP1285728A2/en
Publication of EP1285728A3 publication Critical patent/EP1285728A3/en
Application granted granted Critical
Publication of EP1285728B1 publication Critical patent/EP1285728B1/en
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    • 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
    • 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
    • B24D7/12—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 apertures for inspecting the surface to be abraded

Definitions

  • the invention relates to a grinding wheel according to the preamble of the claim 1.
  • grinding wheels provided with diamond-containing cutting bodies and a conditional suitability for the treatment of coated, mineral substrates exhibit.
  • the primary use of these grinding wheels is for mineral Substrates designed. From US 3,745,719 is such a grinding wheel with a circular grinding area, a central receiving area, a plurality of passage openings in the grinding area and several protruding from the grinding area, one rectangular base having cutting bodies in different radial Distances from the center of the receiving area are arranged, known.
  • the invention is based on the object, an economically producible grinding wheel to create, with their cutting body, the coating of the substrate wedge-shaped can be cut and each cutting body a self-sharpening, sharp-edged cutting edge has.
  • the cutting body is a wedge-shaped Cutting the ablated coating achieved.
  • the wedge-shaped penetration of the Cutting body into the coating leads to a rapid removal of the same from the surface on which this adheres, without being heated and without that worn coating material sticks to the cutting bodies.
  • a special High removal rate is achieved when the angle between the center of the receiving area facing longitudinal side of the cutting body and the radial 45 ° is.
  • the good penetration of the cutting body in the coating leads to a smooth running in grinding operation.
  • Each cutting body preferably has two matrix zones with different ones Diamond concentration, which in a parallel to the broad side of the cutting body extending Direction are arranged one behind the other. That matrix zone with the higher one Diamond concentration serves to remove the coating and the matrix zone with the Lower diamond concentration has the function of a support back.
  • the removal of the coating done with a sharp-edged cutting edge can, which extends over the center of the receiving area facing longitudinal side of the cutter body and extends at the free end of the cutter body, conveniently has the closer to the center of the receiving area
  • the first matrix zone has a higher diamond concentration than the center of the Receiving area facing away second matrix zone.
  • the diamonds in the first matrix zone have a smaller grain size as the diamonds in the second matrix zone.
  • the Diamonds are not as fast as in the second matrix zone.
  • Even if the Diamonds break out in the first matrix zone, leading them due to their very small size Do not scale to a blurred cutting edge.
  • Due to the larger grain size the diamonds in the second matrix zone break out faster than the diamonds in the first matrix zone.
  • the second matrix zone thus allows greater wear of the back support, which forms in the grinding operation and thus the cutting edge of the Cutting body to a certain "exemption" helps.
  • the parallel to the broad side of the cutting body corresponds measured width of the matrix zone with the higher diamond concentration of 0.15 bis 0.35 times the width of the cutting body.
  • the grinding area is advantageously arranged in a plurality of radially offset from each other, at least partially radially overlapping coaxial with each other Divided annular surfaces, wherein in each annular surface at least one cutting body is arranged.
  • An increase in the removal rate of the grinding wheel is preferably characterized ensures that each cutting body is arranged inclined relative to the disk plane.
  • the inclined arrangement of the cutting body helps to remove the coating in that the coating material does not lie on a vertical surface during removal but meets an inclined surface of the cutting body and of this under one Angle - the so-called rake angle - is deflected from the ground.
  • the inclined surface is the one facing the center of the receiving area Longitudinal side of the cutting body, which at an angle of 80 ° to 90 ° to a is arranged from the grinding area formed disc plane.
  • This 80 ° to 90 ° give a rake angle of 10 ° to 20 °, which is between said longitudinal side and a projecting from the disk plane perpendicular.
  • a good removal of the removed coating material from the processing area takes place by a plurality of passage openings arranged in the grinding area of the grinding wheel, expediently in an edge region opposite the edge Each cutting body is arranged a passage opening.
  • the grinding wheel shown in FIGS. 1 to 3 serves for the removal of applied to mineral substrate coatings. Neither the coating yet the mineral substrate are shown in Figs. 1 to 3.
  • the grinding wheel has a central receiving area 2, several Passage openings 3 in the grinding area 1 and several protruding from the grinding area 1, a rectangular base having cutting body 4.
  • the grinding area 1 and the central receiving area 2 are arranged coaxially with each other, but in a parallel spaced from one another to the common central axis direction.
  • the Transition 10 between the central receiving area 2 and the grinding area 1 is conical and provided with a plurality of through holes 9.
  • the grinding area 1 is composed of a plurality of radially offset from each other, at least partially radially overlapping, coaxially extending annular surfaces D, E, F together, wherein in each annular surface D, E, F four or eight Cutting body 4 are arranged evenly distributed.
  • the cutting body 4 thus have different distances from the central receiving area 2.
  • Eight cutting body 4 are located in the farthest from the center of the reception area Circular ring surface D arranged. Of the three annular surfaces D, E and F overlap in the radial direction only the annular surfaces E and F.
  • each cutter body 4 is at an angle B of 45 ° to one from the center of the receiving area 2 outgoing Radial R arranged.
  • the radial runs through the Intersection point S between the center of the receiving area 2 facing Long side 5 and facing away from the center of the receiving area 2 wide side. 6 of the cutting body 4.
  • Each cutting body 4 has two matrix zones 7, 8 with different Diamond concentration on, in a parallel to the broad side 6 of the cutter body 4 extending direction are arranged one behind the other.
  • a the center of Receiving area 2 closer matrix zone 7 has a higher diamond concentration on as a remote from the center of the receiving area 2 second matrix zone 8.
  • the diamonds of the individual matrix zones 7, 8 have different Grain sizes.
  • all diamonds are in the first matrix zone 7 is a smaller grain size than the diamonds in the second matrix zone 8.
  • the parallel to the broad side 6 of the cutting body 4 measured width of the matrix zone 7 with the higher diamond concentration corresponds to 0.25 times the width of the cutting bodies 4.
  • Each cutter 4 is inclined relative to the disk plane, wherein the the center of the receiving area 2 facing longitudinal side 5 of the cutting body. 4 is arranged at an angle A of 85 ° to the receiving area 2.
  • the central receiving area facing longitudinal side 5 and the center of the facing broadside 6 together form an edge (K).
  • a passage opening 3 In one of the edge K opposite circumferential region of each cutting body 4 is a passage opening 3, through which the abraded coating material, for example with a Suction device, not shown, can be sucked off.

Abstract

The grindstone has a receiving region (2), a central grinding region (1) with through apertures (3) and cutting bodies (4) at different spacings. The long side (5) of each cutting body facing the central receiving region is at and angle of 35-55 degrees to a radius (R) originating in the central receiving region, at a tangent to an edge (K) formed from the long side and the wide side (6) of the cutting body facing away from the entral receiving region.

Description

Die Erfindung betrifft eine Schleifscheibe gemäss dem Oberbegriff des Patentanspruchs 1.The invention relates to a grinding wheel according to the preamble of the claim 1.

Für die Bearbeitung beispielsweise von Oberflächen beschichteter, mineralischer Untergründe werden Werkzeuge in Form von "Fräsrädern" verwendet, die mit segmentförmigen Hartmetallelementen bestückt sind. Diese Werkzeuge haben den Nachteil, dass keine Selbstschärfung der Hartmetallelemente stattfindet. Daher ergibt sich eine rasche Abnahme der Abtragsleistung über die Lebensdauer des Werkzeugs.For processing, for example, surfaces coated, mineral Substrates are used in the form of "cutting wheels" with segment-shaped carbide elements are fitted. These tools have the Disadvantage that no self-sharpening of the hard metal elements takes place. Therefore arises a rapid decrease in stock removal over the life of the tool.

Ferner gibt es Schleifscheiben, die mit Diamanten enthaltenden Schneidkörpern versehen sind und eine bedingte Eignung zur Bearbeitung von beschichteten, mineralischen Untergründen aufweisen. Der primäre Einsatz dieser Schleifscheiben ist für mineralische Untergründe konzipiert. Aus der US 3 745 719 ist eine derartige Schleifscheibe mit einem kreisringförmigen Schleifbereich, einem zentralen Aufnahmebereich, mehreren Durchtrittsöffnungen im Schleifbereich und mehreren vom Schleifbereich abragenden, eine rechteckige Grundfläche aufweisenden Schneidkörpern, die in unterschiedlichen radialen Abständen vom Zentrum des Aufnahmebereiches angeordnet sind, bekannt.There are also grinding wheels provided with diamond-containing cutting bodies and a conditional suitability for the treatment of coated, mineral substrates exhibit. The primary use of these grinding wheels is for mineral Substrates designed. From US 3,745,719 is such a grinding wheel with a circular grinding area, a central receiving area, a plurality of passage openings in the grinding area and several protruding from the grinding area, one rectangular base having cutting bodies in different radial Distances from the center of the receiving area are arranged, known.

Aufgrund der Anordnung der Schneidkörper, deren Breitseite bzw. Längsseite parallel zu einer vom Zentrum des Aufnahmebereiches ausgehenden Radialen verlaufen, erfolgt der Anschnitt der auf dem mineralischen Untergrund aufgebrachten Beschichtung flächig, d.h. mit der Breitseite bzw. mit der Längsseite. Dies führt neben einem schlechten Eindringverhalten der Schneidkörper in die Beschichtung zu einer starken Erwärmung der Beschichtung, wobei die Erwärmung durch die Reibung der sich auf der Beschichtung rotierenden Schneidkörper entsteht. Diese starke Erwärmung führt dazu, dass die Beschichtung weich wird und abgeriebenes Beschichtungsgut an den Schneidkörpern kleben bleibt, so dass sich das Eindringverhalten des Schneidkörpers in die Beschichtung zusätzlich verschlechtert. Due to the arrangement of the cutting body whose broad side or longitudinal side parallel to run from the center of the receiving area Radial out, takes place Gap of the applied on the mineral substrate coating surface, i. with the broad side or with the long side. This leads besides a bad penetration the cutting body in the coating to a strong warming of Coating, wherein the heating caused by the friction on the coating rotating cutting body arises. This strong warming causes the Coating softens and abraded coating material on the cutting bodies sticks, so that the penetration of the cutting body into the coating additionally worsened.

Der Erfindung liegt die Aufgabe zugrunde, eine wirtschaftlich herstellbare Schleifscheibe zu schaffen, mit deren Schneidkörper die Beschichtung des Untergrundes keilförmig anschneidbar ist und jeder Schneidkörper eine selbstschärfende, scharfkantige Schneidkante besitzt.The invention is based on the object, an economically producible grinding wheel to create, with their cutting body, the coating of the substrate wedge-shaped can be cut and each cutting body a self-sharpening, sharp-edged cutting edge has.

Die Lösung dieser Aufgabe erfolgt durch eine Schleifscheibe, welche die im Patentanspruch 1 angeführten Merkmale aufweist.The solution of this task is performed by a grinding wheel, which in the Claim 1 has listed features.

Mit der erfindungsgemässen Anordnung der Schneidkörper wird ein keilförmiges Anschneiden der abzutragenden Beschichtung erreicht. Das keilförmige Eindringen der Schneidkörper in die Beschichtung führt zu einer schnellen Entfernung derselben von dem Untergrund auf dem diese haftet, ohne dass sich diese erwärmt und ohne dass abgetragenes Beschichtungsgut an den Schneidkörpern kleben bleibt. Eine besonders hohe Abtragleistung wird erzielt, wenn der Winkel zwischen der dem Zentrum des Aufnahmebereiches zugewandten Längsseite der Schneidkörper und der Radialen 45° beträgt. Das gute Eindringverhalten der Schneidkörper in die Beschichtung führt zu einer hohen Laufruhe im Schleifbetrieb.With the inventive arrangement of the cutting body is a wedge-shaped Cutting the ablated coating achieved. The wedge-shaped penetration of the Cutting body into the coating leads to a rapid removal of the same from the surface on which this adheres, without being heated and without that worn coating material sticks to the cutting bodies. A special High removal rate is achieved when the angle between the center of the receiving area facing longitudinal side of the cutting body and the radial 45 ° is. The good penetration of the cutting body in the coating leads to a smooth running in grinding operation.

Jeder Schneidkörper weist vorzugsweise zwei Matrixzonen mit unterschiedlicher Diamantkonzentration auf, die in einer parallel zur Breitseite des Schneidkörpers verlaufenden Richtung hintereinander angeordnet sind. Jene Matrixzone mit der höheren Diamantkonzentration dient dem Abtragen der Beschichtung und die Matrixzone mit der geringeren Diamantkonzentration hat die Funktion eines Stützrückens.Each cutting body preferably has two matrix zones with different ones Diamond concentration, which in a parallel to the broad side of the cutting body extending Direction are arranged one behind the other. That matrix zone with the higher one Diamond concentration serves to remove the coating and the matrix zone with the Lower diamond concentration has the function of a support back.

Damit die Abtragung der Beschichtung mit einer scharfkantigen Schneidkante erfolgen kann, die sich über die dem Zentrum des Aufnahmebereiches zugewandte Längsseite des Schneidkörpers erstreckt und sich am freien Ende des Schneidkörpers erstreckt, weist zweckmässigerweise die dem Zentrum des Aufnahmebereiches näherliegende erste Matrixzone eine höhere Diamantkonzentration auf, als die dem Zentrum des Aufnahmebereiches abgewandte zweite Matrixzone.So that the removal of the coating done with a sharp-edged cutting edge can, which extends over the center of the receiving area facing longitudinal side of the cutter body and extends at the free end of the cutter body, conveniently has the closer to the center of the receiving area The first matrix zone has a higher diamond concentration than the center of the Receiving area facing away second matrix zone.

Vorteilhafterweise besitzen die Diamanten in der ersten Matrixzone eine kleinere Korngrösse als die Diamanten in der zweiten Matrixzone. Dies führt zu einem unterschiedlich starken Verschleiss während des Scheifbetriebs. In der ersten Matrixzone brechen die Diamanten nicht so schnell aus wie in der zweiten Matrixzone. Selbst dann, wenn die Diamanten in der ersten Matrixzone ausbrechen, führen sie aufgrund ihrer sehr kleinen Grösse nicht zu einer unscharfen Schneidkante. Aufgrund der grösseren Korngrösse brechen die Diamanten in der zweiten Matrixzone schneller aus als die Diamanten in der ersten Matrixzone. Die zweite Matrixzone ermöglicht damit einen stärkeren Verschleiss des Stützrückens, der sich im Schleifbetrieb ausbildet und damit der Schneidkante des Schneidkörpers zu einer gewissen "Freistellung" verhilft.Advantageously, the diamonds in the first matrix zone have a smaller grain size as the diamonds in the second matrix zone. This leads to a different one Heavy wear during the Scheifbetriebs. In the first matrix zone break the Diamonds are not as fast as in the second matrix zone. Even if the Diamonds break out in the first matrix zone, leading them due to their very small size Do not scale to a blurred cutting edge. Due to the larger grain size the diamonds in the second matrix zone break out faster than the diamonds in the first matrix zone. The second matrix zone thus allows greater wear of the back support, which forms in the grinding operation and thus the cutting edge of the Cutting body to a certain "exemption" helps.

Aus herstelltechnischen Gründen entspricht die parallel zu der Breitseite der Schneidkörper gemessene Breite der Matrixzone mit der höheren Diamantkonzentration der 0,15-bis 0,35-fache Breite der Schneidkörper.For manufacturing reasons, the parallel to the broad side of the cutting body corresponds measured width of the matrix zone with the higher diamond concentration of 0.15 bis 0.35 times the width of the cutting body.

Damit der Schleifvorgang mit dem gesamten Schleifbereich der Schleifscheibe erfolgen kann, ist der Schleifbereich vorteilhafterweise in mehrere radial zueinander versetzt angeordnete, sich wenigstens teilweise radial überlappende, koaxial zueinander verlaufende Kreisringflächen unterteilt, wobei in jeder Kreisringfläche wenigstens ein Schneidkörper angeordnet ist.So that the grinding process takes place with the entire grinding area of the grinding wheel can, the grinding area is advantageously arranged in a plurality of radially offset from each other, at least partially radially overlapping coaxial with each other Divided annular surfaces, wherein in each annular surface at least one cutting body is arranged.

Eine Steigerung der Abtragsleistung der Schleifscheibe wird vorzugsweise dadurch erreicht, dass jeder Schneidkörper gegenüber der Scheibenebene geneigt angeordnet ist.An increase in the removal rate of the grinding wheel is preferably characterized ensures that each cutting body is arranged inclined relative to the disk plane.

Die geneigte Anordnung der Schneidkörper unterstützt das Abtragen der Beschichtung dadurch, dass das Beschichtungsgut beim Abtrag nicht auf eine senkrechte Fläche sondern auf eine geneigte Fläche des Schneidkörpers trifft und von dieser unter einem Winkel - dem sogenannten Spanwinkel - vom Untergrund abgelenkt wird. Bei der geneigten Fläche handelt es sich um die dem Zentrum des Aufnahmebereiches zugewandte Längsseite des Schneidkörpers, der unter einem Winkel von 80° bis 90° zu einer von dem Schleifbereich gebildeten Scheibenebene angeordnet ist. Diese 80° bis 90° ergeben einen Spanwinkel von 10° bis 20°, der sich zwischen besagter Längsseite und einer von der Scheibenebene abragenden Senkrechten liegt. Ein Spanwinkel von 15° hat sich als besonders vorteilhaft erwiesen.The inclined arrangement of the cutting body helps to remove the coating in that the coating material does not lie on a vertical surface during removal but meets an inclined surface of the cutting body and of this under one Angle - the so-called rake angle - is deflected from the ground. In the inclined surface is the one facing the center of the receiving area Longitudinal side of the cutting body, which at an angle of 80 ° to 90 ° to a is arranged from the grinding area formed disc plane. This 80 ° to 90 ° give a rake angle of 10 ° to 20 °, which is between said longitudinal side and a projecting from the disk plane perpendicular. Has a rake angle of 15 ° proved to be particularly advantageous.

Eine gute Abfuhr des abgetragenen Beschichtungsgutes aus dem Bearbeitungsbereich erfolgt durch mehrere im Schleifbereich der Schleifscheibe angeordnete Durchtrittsöffnungen, wobei zweckmässigerweise in einem der Kante gegenüberliegenden Umfangsbereich jedes Schneidkörpers eine Durchtrittsöffnung angeordnet ist. Diese besondere Anordnung hat den Vorteil, dass das Beschichtungsgut unmittelbar nach dem Abtragen durch die Schneidkörper, beispielsweise mit Hilfe einer geeigneten Absaugvorrichtung, aus dem Bearbeitungsbereich abgesaugt werden kann. A good removal of the removed coating material from the processing area takes place by a plurality of passage openings arranged in the grinding area of the grinding wheel, expediently in an edge region opposite the edge Each cutting body is arranged a passage opening. These special arrangement has the advantage that the coating material immediately after Removal by the cutting body, for example by means of a suitable suction device, can be sucked out of the processing area.

Die Erfindung wird anhand von Zeichnungen, die ein Ausführungsbeispiel wiedergeben, näher erläutert. Es zeigen:

Fig.1
eine erfindungsgemässe Schleifscheibe in der Unteransicht;
Fig. 2
einen Schnitt durch die Schleifscheibe entlang der Linie II-II in Fig. 1;
Fig. 3
einen vergrösserten Ausschnitt der Schleifscheibe gemäss Fig. 2.
The invention will be explained in more detail with reference to drawings which illustrate an embodiment. Show it:
Fig.1
an inventive grinding wheel in the bottom view;
Fig. 2
a section through the grinding wheel along the line II-II in Fig. 1;
Fig. 3
an enlarged section of the grinding wheel according to FIG. 2.

Die in den Fig. 1 bis 3 dargestellte Schleifscheibe dient dem Abtragen von auf mineralischem Untergrund aufgetragenen Beschichtungen. Weder die Beschichtung noch der mineralische Untergrund sind in den Fig. 1 bis 3 dargestellt. Neben einem Schleifbereich 1 weist die Schleifscheibe einen zentralen Aufnahmebereich 2, mehrere Durchtrittsöffnungen 3 im Schleifbereich 1 und mehrere vom Schleifbereich 1 abragende, eine rechteckige Grundfläche aufweisende Schneidkörper 4 auf. Der Schleifbereich 1 und der zentrale Aufnahmebereich 2 sind koaxial zueinander angeordnet, aber in einer parallel zur gemeinsamen Mittelachse verlaufenden Richtung voneinander beabstandet. Der Übergang 10 zwischen dem zentralen Aufnahmebereich 2 und dem Schleifbereich 1 ist konisch ausgebildet und mit mehreren Durchgangsbohrungen 9 versehen.The grinding wheel shown in FIGS. 1 to 3 serves for the removal of applied to mineral substrate coatings. Neither the coating yet the mineral substrate are shown in Figs. 1 to 3. In addition to one Grinding area 1, the grinding wheel has a central receiving area 2, several Passage openings 3 in the grinding area 1 and several protruding from the grinding area 1, a rectangular base having cutting body 4. The grinding area 1 and the central receiving area 2 are arranged coaxially with each other, but in a parallel spaced from one another to the common central axis direction. Of the Transition 10 between the central receiving area 2 and the grinding area 1 is conical and provided with a plurality of through holes 9.

Der Schleifbereich 1 setzt sich aus mehreren, radial zueinander versetzt angeordneten, sich wenigstens teilweise radial überlappenden, koaxial zueinander verlaufenden Kreisringflächen D, E, F zusammen, wobei in jeder Kreisringfläche D, E, F vier bzw. acht Schneidkörper 4 gleichmässig verteilt angeordnet sind. Die Schneidkörper 4 weisen somit unterschiedliche Abstände vom zentralen Aufnahmebereich 2 auf. Acht Schneidkörper 4 sind in der vom Zentrum des Aufnahmebereiches am weitesten entfernt angeordneten Kreisringfläche D angeordnet. Von den drei Kreisringflächen D, E und F überlappen sich in radialer Richtung nur die Kreisringflächen E und F.The grinding area 1 is composed of a plurality of radially offset from each other, at least partially radially overlapping, coaxially extending annular surfaces D, E, F together, wherein in each annular surface D, E, F four or eight Cutting body 4 are arranged evenly distributed. The cutting body 4 thus have different distances from the central receiving area 2. Eight cutting body 4 are located in the farthest from the center of the reception area Circular ring surface D arranged. Of the three annular surfaces D, E and F overlap in the radial direction only the annular surfaces E and F.

Die dem Zentrum des Aufnahmebereiches 2 zugewandte Längsseite 5 jedes Schneidkörpers 4 ist unter einem Winkel B von 45° zu einer vom Zentrum des Aufnahmebereiches 2 ausgehenden Radialen R angeordnet. Die Radiale verläuft durch den Schnittpunkt S zwischen der dem Zentrum des Aufnahmebereiches 2 zugewandten Längsseite 5 und der vom Zentrum des Aufnahmebereiches 2 abgewandten Breitseite 6 des Schneidkörpers 4. Jeder Schneidkörper 4 weist zwei Matrixzonen 7, 8 mit unterschiedlicher Diamantkonzentration auf, die in einer parallel zur Breitseite 6 des Schneidkörpers 4 verlaufenden Richtung hintereinander angeordnet sind. Eine dem Zentrum des Aufnahmebereiches 2 näherliegende Matrixzone 7 weist eine höhere Diamantkonzentration auf als eine von dem Zentrum des Aufnahmebereiches 2 abgewandte zweite Matrixzone 8. Die Diamanten der einzelnen Matrixzonen 7, 8 weisen unterschiedliche Korngrössen auf. So besitzen beispielsweise alle Diamanten in der ersten Matrixzone 7 eine kleinere Korngrösse als die Diamanten in der zweiten Matrixzone 8. Die parallel zu der Breitseite 6 der Schneidkörper 4 gemessene Breite der Matrixzone 7 mit der höheren Diamantkonzentration entspricht der 0,25-fachen Breite der Schneidkörper 4. Jeder Schneidkörper 4 ist gegenüber der Scheibenebene geneigt angeordnet, wobei die dem Zentrum des Aufnahmebereiches 2 zugewandte Längsseite 5 des Schneidkörpers 4 unter einem Winkel A von 85° zum Aufnahmebereich 2 angeordnet ist.The the center of the receiving area 2 facing longitudinal side 5 of each cutter body 4 is at an angle B of 45 ° to one from the center of the receiving area 2 outgoing Radial R arranged. The radial runs through the Intersection point S between the center of the receiving area 2 facing Long side 5 and facing away from the center of the receiving area 2 wide side. 6 of the cutting body 4. Each cutting body 4 has two matrix zones 7, 8 with different Diamond concentration on, in a parallel to the broad side 6 of the cutter body 4 extending direction are arranged one behind the other. A the center of Receiving area 2 closer matrix zone 7 has a higher diamond concentration on as a remote from the center of the receiving area 2 second matrix zone 8. The diamonds of the individual matrix zones 7, 8 have different Grain sizes. For example, all diamonds are in the first matrix zone 7 is a smaller grain size than the diamonds in the second matrix zone 8. The parallel to the broad side 6 of the cutting body 4 measured width of the matrix zone 7 with the higher diamond concentration corresponds to 0.25 times the width of the cutting bodies 4. Each cutter 4 is inclined relative to the disk plane, wherein the the center of the receiving area 2 facing longitudinal side 5 of the cutting body. 4 is arranged at an angle A of 85 ° to the receiving area 2.

Die dem zentralen Aufnahmebereich zugewandte Längsseite 5 und die vom Zentrum abgewandte Breitseite 6 bilden gemeinsam eine Kante (K). In einem der Kante K gegenüberliegenden Umfangsbereich jedes Schneidkörpers 4 befindet sich eine Durchtrittsöffnung 3, durch die das abgetragene Beschichtungsgut, beispielsweise mit einer nicht dargestellten Absaugvorrichtung abgesaugt werden kann.The central receiving area facing longitudinal side 5 and the center of the facing broadside 6 together form an edge (K). In one of the edge K opposite circumferential region of each cutting body 4 is a passage opening 3, through which the abraded coating material, for example with a Suction device, not shown, can be sucked off.

Claims (9)

Schleifscheibe mit einem kreisringförmigen Schleifbereich (1), einem zentralen Aufnahmebereich (2), mehreren Durchtrittsöffnungen (3) im Schleifbereich (1) und mehreren vom Schleifbereich (1) abragenden, eine rechteckige Grundfläche aufweisenden Schneidkörpern (4), die in unterschiedlichen radialen Abständen vom Zentrum des Aufnahmebereiches (2) angeordnet sind, dadurch gekennzeichnet, dass die dem Zentrum des Aufnahmebereiches (2) zugewandte Längsseite (5) jedes Schneidkörpers (4) unter einem Winkel (B) von 35° bis 55° zu einer vom Zentrum des Aufnahmebereiches (2) ausgehenden Radialen (R) angeordnet ist, die eine Kante (K) tangiert, die von der dem Zentrum des Aufnahmebereiches (2) zugewandten Längsseite (5) und der vom Zentrum des Aufnahmebereiches (2) abgewandten Breitseite (6) des Schneidkörpers (4) gebildet ist.Grinding wheel with an annular grinding area (1), a central receiving area (2), a plurality of passage openings (3) in the grinding area (1) and several from the grinding area (1) projecting, a rectangular base having cutting bodies (4), in different radial distances from Center of the receiving area (2) are arranged, characterized in that the center of the receiving area (2) facing the longitudinal side (5) of each cutting body (4) at an angle (B) of 35 ° to 55 ° to one from the center of the receiving area ( 2) outgoing radials (R) is arranged, which touches an edge (K) facing away from the center of the receiving area (2) longitudinal side (5) and the center of the receiving area (2) facing away from wide side (6) of the cutting body ( 4) is formed. Schleifscheibe nach Anspruch 1, dadurch gekennzeichnet, dass jeder Schneidkörper (4) zwei Matrixzonen (7, 8) mit unterschiedlicher Diamantkonzentration aufweist, die in einer parallel zur Breitseite (6) des Schneidkörpers (4) verlaufenden Richtung hintereinander angeordnet sind.Grinding wheel according to claim 1, characterized in that each cutting body (4) has two matrix zones (7, 8) with different diamond concentration, which are arranged one behind the other in a direction parallel to the broad side (6) of the cutting body (4). Schleifscheibe nach Anspruch 2, dadurch gekennzeichnet, dass eine dem Zentrum des Aufnahmebereiches (2) näherliegende erste Matrixzone (7) eine höhere Diamantkonzentration aufweist als eine vom Zentrum des Aufnahmebereiches (2) abgewandte zweite Matrixzone (8).Grinding wheel according to Claim 2, characterized in that a first matrix zone (7) which is closer to the center of the receiving area (2) has a higher diamond concentration than a second matrix zone (8) remote from the center of the receiving area (2). Schleifscheibe nach Anspruch 2 oder 3, dadurch gekennzeichnet, dass die Diamanten in der ersten Matrixzone (7) eine grössere Korngrösse besitzen als die Diamanten in der zweiten Matrixzone (8).Grinding wheel according to claim 2 or 3, characterized in that the diamonds in the first matrix zone (7) have a larger grain size than the diamonds in the second matrix zone (8). Schleifscheibe nach Anspruch 3 oder 4, dadurch gekennzeichnet, dass die parallel zu der Breitseite (6) der Schneidkörper (4) gemessene Breite der Matrixzone (7) mit der höheren Diamantkonzentration der 0,15- bis 0,35-fache Breite der Schneidkörper (4) entspricht. Grinding wheel according to claim 3 or 4, characterized in that the width of the matrix zone (7) measured parallel to the broad side (6) of the cutting body (4) with the higher diamond concentration of 0.15 to 0.35 times the width of the cutting bodies ( 4) corresponds. Schleifscheibe nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass der Schleifbereich (1) in mehrere radial zueinander versetzt angeordnete, sich wenigstens teilweise radial überlappende, koaxial zueinander verlaufende Kreisringflächen (D, E, F) unterteilt ist, wobei in jeder Kreisringfläche (D, E, F) wenigstens ein Schneidkörper (4) angeordnet ist.Grinding wheel according to one of claims 1 to 5, characterized in that the grinding region (1) is divided into a plurality of radially offset from one another, at least partially radially overlapping, coaxially extending annular surfaces (D, E, F), wherein in each annular surface ( D, E, F) at least one cutting body (4) is arranged. Schleifscheibe nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass jeder Schneidkörper (4) gegenüber der Scheibenebene geneigt angeordnet ist.Grinding wheel according to one of claims 1 to 6, characterized in that each cutting body (4) is arranged inclined relative to the disk plane. Schleifscheibe nach Anspruch 7, dadurch gekennzeichnet, dass die dem Zentrum des Aufnahmebereiches (2) zugewandte Längsseite (5) des Schneidkörpers (4) unter einem Winkel (A) von 80° bis 90° zum Aufnahmebereich (2) angeordnet ist.Grinding wheel according to claim 7, characterized in that the center of the receiving area (2) facing the longitudinal side (5) of the cutting body (4) at an angle (A) of 80 ° to 90 ° to the receiving area (2) is arranged. Schleifscheibe nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass in einem der Kante (K) gegenüberliegenden Umfangsbereich jedes Schneidkörpers (4) eine Durchtrittsöffnung (3) angeordnet ist.Grinding wheel according to one of claims 1 to 8, characterized in that in one of the edge (K) opposite peripheral portion of each cutting body (4) has a passage opening (3) is arranged.
EP02405672A 2001-08-13 2002-08-02 Abrasive wheel Expired - Lifetime EP1285728B1 (en)

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DE10139762 2001-08-13
DE10139762A DE10139762A1 (en) 2001-08-13 2001-08-13 grinding wheel

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EP1285728A2 true EP1285728A2 (en) 2003-02-26
EP1285728A3 EP1285728A3 (en) 2003-09-10
EP1285728B1 EP1285728B1 (en) 2006-01-25

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EP (1) EP1285728B1 (en)
AT (1) ATE316447T1 (en)
AU (1) AU2002300433B2 (en)
DE (2) DE10139762A1 (en)
DK (1) DK1285728T3 (en)
ES (1) ES2259366T3 (en)
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Also Published As

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AU2002300433B2 (en) 2007-09-13
DE10139762A1 (en) 2003-02-27
US20030054746A1 (en) 2003-03-20
NO322762B1 (en) 2006-12-04
ATE316447T1 (en) 2006-02-15
DK1285728T3 (en) 2006-06-06
EP1285728B1 (en) 2006-01-25
PL198514B1 (en) 2008-06-30
PL355465A1 (en) 2003-02-24
NO20023810L (en) 2003-02-14
US6926583B2 (en) 2005-08-09
NO20023810D0 (en) 2002-08-12
DE50205697D1 (en) 2006-04-13
EP1285728A3 (en) 2003-09-10
ES2259366T3 (en) 2006-10-01

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