EP2265410B1 - Roughing grinding wheel - Google Patents

Roughing grinding wheel Download PDF

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Publication number
EP2265410B1
EP2265410B1 EP08874253A EP08874253A EP2265410B1 EP 2265410 B1 EP2265410 B1 EP 2265410B1 EP 08874253 A EP08874253 A EP 08874253A EP 08874253 A EP08874253 A EP 08874253A EP 2265410 B1 EP2265410 B1 EP 2265410B1
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EP
European Patent Office
Prior art keywords
roughing
grinding disc
grinding
part discs
discs
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.)
Not-in-force
Application number
EP08874253A
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German (de)
French (fr)
Other versions
EP2265410A1 (en
Inventor
Frank Henn
Markus Bernhardt
Martin Wördehoff
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.)
August Rueggeberg GmbH and Co KG
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August Rueggeberg GmbH and Co KG
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Publication date
Application filed by August Rueggeberg GmbH and Co KG filed Critical August Rueggeberg GmbH and Co KG
Priority to PL08874253T priority Critical patent/PL2265410T3/en
Publication of EP2265410A1 publication Critical patent/EP2265410A1/en
Application granted granted Critical
Publication of EP2265410B1 publication Critical patent/EP2265410B1/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
    • B24D7/16—Bushings; Mountings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D13/00—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor
    • B24D13/02—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by their periphery
    • B24D13/08—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by their periphery comprising annular or circular sheets packed side by side
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
    • B24D5/06—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor with inserted abrasive blocks, e.g. segmental
    • B24D5/066—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor with inserted abrasive blocks, e.g. segmental with segments mounted axially one against the other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
    • B24D5/16—Bushings; Mountings

Definitions

  • the invention relates to a roughing wheel.
  • Such a relatively thick circumferential grinding wheel which consists of a plurality of tissue-reinforced, full-surface glued together partial discs, wherein in the adhesive layer, an elastic insert may be provided.
  • Such packages have a higher grinding performance than a one-piece compact disk.
  • a compact disc which in each case has abrasive-free zones in its radially outer regions, which are formed by annular intermediate layers, which can optionally be removed again, so that a clear gap is formed between the adjacent regions.
  • abrasive-free zones lead to a particularly cool grinding during circumferential grinding and also produce additional chip space, which allows a substantial increase in the grinding performance with otherwise identical disk composition.
  • a compact grinding wheel which consists of several layers of resin-bonded abrasive grain and multiple layers of reinforcements made of fiberglass layers.
  • the grinding wheel has an inner hub for attachment to a drive shaft of a grinding machine.
  • the invention has for its object to provide a vibration-damped roughing grinding wheel for the hand-guided use, which is particularly simple in construction and thus is particularly easy to produce.
  • Fig. 1 and 5 As can be seen, roughing wheels 1 are used on hand-grinders 2, namely so-called angle grinders.
  • the grinding wheel 1 has for this purpose a central opening 3, in which a hub 4 is inserted.
  • This hub 4 has an internal thread 5, by means of which the grinding wheel 1 is screwed onto a provided with an external thread 6 output shaft 7 of the grinding machine 2.
  • the grinding wheel 1 consists in its basic structure of several, namely two to ten, thin part discs 8 with an outer diameter D.
  • Each part disc 8 has on its two outer sides depending on a reinforcement 9, 10, wherein between the two reinforcements 9, 10 with binders , usually phenolic resin, bonded abrasive grain 11 is arranged.
  • the reinforcements 9, 10 consist of a fabric impregnated with the binder of the abrasive grain 11, usually a glass fabric. These dividing discs 8 are hardened.
  • the part discs 8 have on their outer sides, ie on the exposed surfaces of the reinforcements 9, 10, no labels or paper layers or the like, so are unbacked.
  • a plurality of planarized dividing disks 8 are stacked on top of one another, wherein in each case an adhesive layer 12, generally thermosets, is applied in an annular region around the central opening 3.
  • This adhesive layer 12 with a diameter d is in each case so thin that when pressing the package of several part discs 8 to a roughing grinding wheel 1, the adhesive in the surface roughness of the adjacent part discs 8 is taken.
  • the dividing disks 8 in the region of the adhesive layer 12 with the diameter d are fixedly connected to each other, and that they are not connected to each other outside the respective adhesive layer 12, but are close to each other.
  • the hub 4 passes through the central opening 3 of the grinding wheel 1 on one side, on the side facing away from the grinding machine 2, only slightly with a flanged edge 14, so that the roughing wheel 1, although not cranked, but completely flat is formed as roughing grinding wheel 1, ie in the beginning and in Fig. 1 illustrated manner, can be used diagonally. But it is also a surface grinding possible in which the roughing grinding wheel 1 with its the edge 14 of the hub associated end face 15 is used flat or approximately flat on a workpiece 16. When the roughing wheel 1 is as shown in FIG Fig.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Braking Arrangements (AREA)

Abstract

A roughing-grinding disc consists of a plurality of part discs, which are flat in design, are located closely against one another, unconnected and uncovered, in an outer working region, are rigidly connected to one another in an inner connecting region located within the working region and are provided with a hub passing through the grinding disc in a centre opening.

Description

Die Erfindung betrifft eine Schrupp-Schleifscheibe.The invention relates to a roughing wheel.

Aus der CH-PS 434 023 ist eine derartige relativ dicke Umfangs-Schleifscheibe bekannt, die aus mehreren mit Gewebe verstärkten, vollflächig miteinander verklebten Teilscheiben besteht, wobei in der Klebstoff Schicht eine elastische Einlage vorgesehen sein kann. Solche Paketscheiben haben eine höhere Schleifleistung als eine einstückig aufgebaute Kompaktscheibe.From the CH-PS 434 023 Such a relatively thick circumferential grinding wheel is known, which consists of a plurality of tissue-reinforced, full-surface glued together partial discs, wherein in the adhesive layer, an elastic insert may be provided. Such packages have a higher grinding performance than a one-piece compact disk.

Aus der CH-PS 434 023 ist darüber hinaus eine Kompaktscheibe bekannt, die in ihren radial äußeren Bereichen jeweils schleifmittelfreie Zonen aufweist, die von ringförmigen Zwischenlagen gebildet sind, die gegebenenfalls wieder entfernt werden können, so dass ein deutlicher Spalt zwischen den benachbarten Bereichen ausgebildet wird. Diese schleifmittelfreien Zonen führen beim Umfangsschleifen zu einem besonders kühlen Schliff und erzeugen außerdem noch weiteren Spanraum, der eine wesentliche Erhöhung der Abschliffleistung bei sonst gleicher Scheibenzusammensetzung ermöglicht.From the CH-PS 434 023 In addition, a compact disc is known, which in each case has abrasive-free zones in its radially outer regions, which are formed by annular intermediate layers, which can optionally be removed again, so that a clear gap is formed between the adjacent regions. These abrasive-free zones lead to a particularly cool grinding during circumferential grinding and also produce additional chip space, which allows a substantial increase in the grinding performance with otherwise identical disk composition.

Aus der EP 1 543 923 A1 ist eine als Kompakt-Schleifscheibe ausgebildete Schrupp-Schleifscheibe bekannt, deren Durchmesser um mindestens den Faktor 10 größer ist als ihre Dicke. Derartige Schrupp-Schleifscheiben werden an handgeführten, pneumatisch oder elektrisch betriebenen Winkel-Schleifmaschinen eingesetzt. Hierbei treten im Schleifeinsatz starke Vibrationen auf, die erhebliche körperliche Schäden des Hand-Arm-Systems des Benutzers verursachen können. Zur Reduktion derartiges Vibrationen ist zwischen einzelnen Schichten in einem äußeren Arbeitsbereich jeweils eine ringförmige Trennschicht angeordnet. Innerhalb dieses Arbeitsbereichs weist sie einen kompakten Aufbau auf. Die Trennschicht hat primär die Funktion, die Amplitude der Vibration beim Schleifen zu reduzieren.From the EP 1 543 923 A1 is known as a compact grinding wheel roughing grinding wheel known whose diameter is greater by at least a factor of 10 than its thickness. Such roughing wheels are used on hand-held, pneumatically or electrically operated angle grinders. In this case, strong vibrations occur in the grinding insert, which can cause considerable physical damage to the hand-arm system of the user. In order to reduce such vibrations, an annular separating layer is arranged in each case between individual layers in an outer working region. Within this workspace, it has a compact design. The separation layer has primarily the function of reducing the amplitude of vibration during grinding.

Aus der US 3,081,584 A ist eine Kompakt-Schleifscheibe bekannt, die aus mehreren Lagen kunstharzgebundenen Schleifkorns und mehreren Lagen Armierungen aus Glasfaserschichten besteht. Die Schleifscheibe weist eine innere Nabe zur Befestigung an einer Antriebs-Welle einer Schleifmaschine auf.From the US 3,081,584 A is known a compact grinding wheel, which consists of several layers of resin-bonded abrasive grain and multiple layers of reinforcements made of fiberglass layers. The grinding wheel has an inner hub for attachment to a drive shaft of a grinding machine.

Der Erfindung liegt die Aufgabe zugrunde, eine schwingungsgedämpfte Schrupp-Schleifscheibe für den handgefiihrten Einsatz zu schaffen, die in ihrem Aufbau besonders einfach ist und damit besonders einfach herstellbar ist.The invention has for its object to provide a vibration-damped roughing grinding wheel for the hand-guided use, which is particularly simple in construction and thus is particularly easy to produce.

Diese Aufgabe wird erfindungsgemäß bei einer Schrupp-Schleifscheibe nach dem Oberbegriff des Anspruches 1 durch die Merkmale im Kennzeichnungsteil des Anspruches 1 gelöst.This object is achieved with a roughing grinding wheel according to the preamble of claim 1 by the features in the characterizing part of claim 1.

Der Aufbau aus einzelnen ebenen Teilscheiben ermöglicht eine sehr einfache Vorfertigung dieser Teilscheiben. Da sie eben sind, besteht nicht die Gefahr eines Verzugs wie bei gekröpfte Scheiben, so dass sie tatsächlich so dicht wie eben möglich aneinander liegen, also in dem nicht verbundenen, d. h. nicht verklebten äußeren Arbeitsbereich, angenähert luftspaltfrei aneinander liegen. Die ebene Ausgestaltung der Schrupp-Schleifscheibe und die Anbringung einer Nabe in dieser macht es besonders vorteilhaft, in der Nabe ein Innengewinde vorzusehen, mittels dessen ein Aufschrauben auf ein Außengewinde einer Abtriebswelle einer handgeführten Schleifmaschine möglich ist. Dies führt dazu, dass trotz der ebenen Ausgestaltung keine über die Schrupp-Schleifscheibe vorstehende Mutter zur Befestigung auf der Abtriebswelle der Schleifmaschine benötigt wird, so dass auch ein flächiger oder angenähert flächiger Einsatz der erfindungsgemäßen Schrupp-Schleifscheibe möglich ist. Diese Ausgestaltung der Nabe kann selbstverständlich auch bei ebenen Schleifscheiben eingesetzt werden, die nicht den erfindungsgemäßen Aufbau haben.The structure of individual flat part discs allows a very simple prefabrication of these part discs. Since they are flat, there is no risk of distortion as in cranked discs so that they are actually as close as possible to each other, so in the unconnected, ie not bonded outer work area, approximately free of air gap to each other. The planar design of the roughing grinding wheel and the attachment of a hub in this makes it particularly advantageous to provide an internal thread in the hub, by means of which a screwing onto an external thread of an output shaft of a hand-held grinding machine is possible. As a result, despite the flat configuration, there is no nut protruding beyond the roughing wheel for attachment is required on the output shaft of the grinding machine, so that a flat or approximately planar use of the roughing grinding wheel according to the invention is possible. This configuration of the hub can of course also be used in flat grinding wheels, which do not have the structure of the invention.

Vorteilhafte Ausgestaltungen ergeben sich aus den Unteransprüchen. Weitere Merkmale, Vorteile und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung eines Ausführungsbeispiels anhand der Zeichnung. Es zeigt

Fig. 1
eine Hand-Schleifmaschine mit einer Schrupp-Schleifscheibe nach der Erfindung im Schleifeinsatz,
Fig. 2
eine Schrupp-Schleifscheibe nach der Erfindung in perspektivischer Darstellung,
Fig. 3
die Schrupp-Schleifscheibe nach der Erfindung in Explosionsdarstellung vor der Montage,
Fig. 4
eine Teilscheibe einer erfindungsgemäßen Schrupp-Schleifscheibe in einer Seitenansicht und
Fig. 5
eine auf die Abtriebswelle einer Hand-Schleifmaschine montierte Schrupp-Schleifscheibe nach der Erfindung in Seitenansicht.
Advantageous embodiments emerge from the subclaims. Further features, advantages and details of the invention will become apparent from the following description of an embodiment with reference to the drawing. It shows
Fig. 1
a hand grinder with a roughing wheel according to the invention in the grinding insert,
Fig. 2
a roughing grinding wheel according to the invention in perspective view,
Fig. 3
the roughing wheel according to the invention in an exploded view before assembly,
Fig. 4
a partial disk of a roughing grinding wheel according to the invention in a side view and
Fig. 5
a mounted on the output shaft of a hand grinder roughing grinding wheel according to the invention in side view.

Wie aus Fig. 1 und 5 hervorgeht, werden Schrupp-Schleifscheiben 1 an Hand-Schleifmaschinen 2, und zwar sogenannten Winkel-Schleifmaschinen, eingesetzt. Die Schleifscheibe 1 weist hierzu eine Mittel-Öffnung 3 auf, in die eine Nabe 4 eingesetzt ist. Diese Nabe 4 weist ein Innengewinde 5 auf, mittels dessen die Schleifscheibe 1 auf eine mit einem Außengewinde 6 versehene Abtriebswelle 7 der Schleifmaschine 2 aufgeschraubt wird.How out Fig. 1 and 5 As can be seen, roughing wheels 1 are used on hand-grinders 2, namely so-called angle grinders. The grinding wheel 1 has for this purpose a central opening 3, in which a hub 4 is inserted. This hub 4 has an internal thread 5, by means of which the grinding wheel 1 is screwed onto a provided with an external thread 6 output shaft 7 of the grinding machine 2.

Die Schleifscheibe 1 besteht in ihrem Grundaufbau aus mehreren, und zwar zwei bis zehn, dünnen Teilscheiben 8 mit einem Außendurchmesser D. Jede Teilscheibe 8 weist an ihren beiden Außenseiten je eine Armierung 9, 10 auf, wobei zwischen den beiden Armierungen 9, 10 mit Bindemitteln, in der Regel Phenolharz, gebundenes Schleifkorn 11 angeordnet ist. Die Armierungen 9, 10 bestehen aus einem mit dem Bindemittel des Schleifkorns 11 imprägnierten Gewebe, in der Regel einem Glasgewebe. Diese Teilscheiben 8 sind gehärtet. Die Teilscheiben 8 weisen auf ihren Außenseiten, also auf den freiliegenden Flächen der Armierungen 9, 10, keine Etiketten oder Papierlagen oder dergleichen auf, sind also unkaschiert.The grinding wheel 1 consists in its basic structure of several, namely two to ten, thin part discs 8 with an outer diameter D. Each part disc 8 has on its two outer sides depending on a reinforcement 9, 10, wherein between the two reinforcements 9, 10 with binders , usually phenolic resin, bonded abrasive grain 11 is arranged. The reinforcements 9, 10 consist of a fabric impregnated with the binder of the abrasive grain 11, usually a glass fabric. These dividing discs 8 are hardened. The part discs 8 have on their outer sides, ie on the exposed surfaces of the reinforcements 9, 10, no labels or paper layers or the like, so are unbacked.

Zur Herstellung einer Schrupp-Schleifscheibe 1 werden mehrere eben ausgebildete Teilscheiben 8 übereinander gestapelt, wobei in einem ringförmigen Bereich um die Mittel-Öffnung 3 jeweils eine Klebstoff-Schicht 12, in der Regel Duromere, aufgetragen ist. Diese Klebstoff-Schicht 12 mit einem Durchmesser d ist jeweils so dünn, dass beim Verpressen des Pakets aus mehreren Teilscheiben 8 zu einer Schrupp-Schleifscheibe 1 der Klebstoff in der Oberflächenrauhigkeit der aneinanderliegenden Teilscheiben 8 auf genommen wird. Dies hat zur Folge, dass die Teilscheiben 8 im Bereich der Klebstoff-Schicht 12 mit dem Durchmesser d fest miteinander verbunden sind, und dass sie außerhalb der jeweiligen Klebstoff-Schicht 12 nicht miteinander verbunden sind, aber dicht aneinander liegen. "Dicht aneinander liegen" bedeutet in diesem Zusammenhang nicht, dass benachbarte Schleifscheiben 1 hier einen Abstand von exakt 0 aufweisen, sondern dass kein praktisch relevanter Luftspalt zwischen zwei benachbarten Teilscheiben 8 besteht. Für die Dicke a einer Schleifscheibe 1 aus n Teilscheiben 8 mit einer Dicke b gilt also: a ≈ n x b. Für die Dicke b der Teilscheiben 8 gilt: 0,8 mm ≤ b ≤ 1,4 mm. Für das Verhältnis von Durchmesser d der Klebstoff-Schicht 12 zum Außendurchmesser D der Schleifscheibe 1 gilt: 0,2 ≤ d/D ≤ 0,65. Für den Außendurchmesser D gilt: 10 mm ≤ D ≤ 300 mm. Der Bereich, in dem die benachbarten Teilscheiben 8 nicht miteinander verbunden sind, bildet den Arbeitsbereich 13 der Schleifscheibe 1.To produce a roughing grinding wheel 1, a plurality of planarized dividing disks 8 are stacked on top of one another, wherein in each case an adhesive layer 12, generally thermosets, is applied in an annular region around the central opening 3. This adhesive layer 12 with a diameter d is in each case so thin that when pressing the package of several part discs 8 to a roughing grinding wheel 1, the adhesive in the surface roughness of the adjacent part discs 8 is taken. As a result, the dividing disks 8 in the region of the adhesive layer 12 with the diameter d are fixedly connected to each other, and that they are not connected to each other outside the respective adhesive layer 12, but are close to each other. "Close to each other" in this context does not mean that adjacent grinding wheels 1 here have a distance of exactly 0, but rather that there is no practically relevant air gap between two adjacent dividing disks 8. For the thickness a of a grinding wheel 1 of n dividing disks 8 with a thickness b, the following applies: a ≈ nx b. For the thickness b of the dividing disks 8: 0.8 mm ≦ b ≦ 1.4 mm. For the ratio of the diameter d of the adhesive layer 12 to the outer diameter D of the grinding wheel 1, the following applies: 0.2 ≤ d / D ≤ 0.65. For the outer diameter D: 10 mm ≤ D ≤ 300 mm. The region in which the adjacent dividing disks 8 are not connected to one another forms the working region 13 of the grinding wheel 1.

Die Nabe 4 durchsetzt die Mittel-Öffnung 3 der Schleifscheibe 1 auf einer Seite, und zwar auf der der Schleifmaschine 2 abgewandten Seite, nur geringfügig mit einem umgebördelten Rand 14, so dass die Schrupp-Schleifscheibe 1, obwohl sie nicht gekröpft, sondern völlig eben ausgebildet ist, als Schrupp-Schleifscheibe 1, also in der eingangs geschilderten und in Fig. 1 dargestellten Weise, schräg eingesetzt werden kann. Es ist aber auch ein Flächenschliff möglich, bei dem die Schrupp-Schleifscheibe 1 mit ihrer dem Rand 14 der Nabe zugeordneten Stirnseite 15 flächig oder angenähert flächig auf einem Werkstück 16 eingesetzt wird. Wenn die Schrupp-Schleifscheibe 1 entsprechend der Darstellung in Fig. 1 schräg eingesetzt wird, dann geschieht dies unter einem Winkel α zwischen der Achse 17 der Scheibe 1 und damit auch der Abtriebswelle 7 der Schleifmaschine 2 gegenüber einer Senkrechten 18 zur zu schleifenden Oberfläche 19 des Werkstücks 16. Für den Winkel α gilt: 20° ≤ α ≤ 60°. Wenn dagegen in der erwähnten Weise flächig geschliffen wird, dann gilt für den Winkel α: α ≈ 0°.The hub 4 passes through the central opening 3 of the grinding wheel 1 on one side, on the side facing away from the grinding machine 2, only slightly with a flanged edge 14, so that the roughing wheel 1, although not cranked, but completely flat is formed as roughing grinding wheel 1, ie in the beginning and in Fig. 1 illustrated manner, can be used diagonally. But it is also a surface grinding possible in which the roughing grinding wheel 1 with its the edge 14 of the hub associated end face 15 is used flat or approximately flat on a workpiece 16. When the roughing wheel 1 is as shown in FIG Fig. 1 is used obliquely, then this is done at an angle α between the axis 17 of the disc 1 and thus also the output shaft 7 of the grinding machine 2 against a perpendicular 18 to be ground surface 19 of the workpiece 16. For the angle α is: 20 ° ≤ α ≤ 60 °. On the other hand, if the surface is ground flat in the above-mentioned way, the following applies to the angle α: α ≈ 0 °.

Claims (7)

  1. Roughing-grinding disc (1), consisting of a plurality of individual part discs (8), which
    - have a common axis (17),
    - have grinding grain (11) bound with synthetic resin and reinforcements (9, 10),
    - have an external diameter D, and
    - are connected to one another by means of an adhesive layer (12),
    characterized
    in that the part discs (8) are configured planar,
    in that the reinforcements (10) are provided on the respective outer sides of the part discs (8) with respect to the axis,
    in that the grinding grain (11) bound with synthetic resin is provided between the reinforcements (9, 10) of each part disc (8),
    in that the part discs (8) are located closely against one another, unconnected and uncovered, in a radially outer working region (13) with respect to the axis (17),
    in that the part discs (8) are connected to one another in a radially inner connecting region with respect to the axis (17) located within the outer working region (13), with a diameter d by means of the adhesive layer (12), and
    in that the part discs are provided in a centre opening (3) with a hub (4) passing through the grinding disc (1).
  2. Roughing-grinding disc (1) according to claim 1, characterized in that, the hub (4) only has one beaded edge (14) on an end face (15) of the roughing-grinding disc (1).
  3. Roughing-grinding disc (1) according to any one of claims 1 to 2,
    characterized
    in that, the part discs (8) have a thickness b, to which there applies: 0.8 mm ≤ b ≤ 1.4 mm.
  4. Roughing-grinding disc (1) according to any one of claims 1 to 3,
    characterized
    in that, with regard to the number n of part discs (8) there applies: 2 ≤ n ≤10.
  5. Roughing-grinding disc (1) according to any one of claims 1 to 4,
    characterized
    in that, with regard to the ratio of the diameter d of the inner connecting region to the external diameter D of the part discs (8) there applies: 0.2 ≤ d/D ≤ 0.65.
  6. Roughing-grinding disc (1) according to any one of claims 1 to 5,
    characterized
    in that, with regard to the external diameter D of the part discs (8) there applies: 100 mm D ≤ 300 mm.
  7. Roughing-grinding disc (1) according to any one of claims 1 to 6,
    characterized
    in that, the hub (4) is provided with an internal thread (5) for screwing onto an external thread (6) of an output shaft (7) of a grinding machine (2).
EP08874253A 2008-05-16 2008-11-03 Roughing grinding wheel Not-in-force EP2265410B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL08874253T PL2265410T3 (en) 2008-05-16 2008-11-03 Roughing grinding wheel

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008023946A DE102008023946B3 (en) 2008-05-16 2008-05-16 Rough-grinding wheel
PCT/EP2008/009236 WO2009138114A1 (en) 2008-05-16 2008-11-03 Roughing grinding wheel

Publications (2)

Publication Number Publication Date
EP2265410A1 EP2265410A1 (en) 2010-12-29
EP2265410B1 true EP2265410B1 (en) 2012-03-07

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Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (9)

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US (1) US20110065369A1 (en)
EP (1) EP2265410B1 (en)
CN (1) CN102026777B (en)
AT (1) ATE548159T1 (en)
AU (1) AU2008356428B2 (en)
DE (1) DE102008023946B3 (en)
ES (1) ES2380282T3 (en)
PL (1) PL2265410T3 (en)
WO (1) WO2009138114A1 (en)

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AU2016421095B2 (en) * 2016-08-23 2022-03-31 August Rüggeberg Gmbh & Co. Kg Roughing grinding tool

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EP2286959B1 (en) * 2009-08-22 2014-05-07 August Rüggeberg GmbH & Co. KG Scrubbing-grinding tool
CN102120316A (en) * 2010-11-29 2011-07-13 湖北玉立砂带集团股份有限公司 Powerful grinding sand disk
GB201504759D0 (en) * 2015-03-20 2015-05-06 Rolls Royce Plc Abrading tool for a rotary dresser
ES2653813T3 (en) * 2015-07-09 2018-02-08 Lukas-Erzett Vereinigte Schleif- Und Fräswerkzeugfabriken Gmbh & Co. Kg Grinding wheel
RU2731496C9 (en) 2017-02-14 2020-11-18 Август Рюггеберг Гмбх & Ко. Кг Method of making grinding tool and grinding tool
CN107225515B (en) * 2017-07-11 2023-06-30 苏州精协机械制造有限公司 Combined multi-line grinding wheel of extrusion tap thread grinder

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AT253966B (en) * 1965-04-09 1967-05-10 Swarovski Tyrolit Schleif Grinding wheel
US3487589A (en) * 1967-01-30 1970-01-06 Federal Mogul Corp Cutoff wheel
GB1591491A (en) * 1977-01-18 1981-06-24 Daichiku Co Ltd Laminated rotary grinder and method of fabrication
TW550141B (en) * 1999-07-29 2003-09-01 Saint Gobain Abrasives Inc Depressed center abrasive wheel assembly and abrasive wheel assembly
DE10359747A1 (en) * 2003-12-19 2005-07-14 August Rüggeberg Gmbh & Co. Kg Rough-grinding wheel
CN2902576Y (en) * 2006-06-07 2007-05-23 广东奔朗超硬材料制品有限公司 Edger wheel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2016421095B2 (en) * 2016-08-23 2022-03-31 August Rüggeberg Gmbh & Co. Kg Roughing grinding tool

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AU2008356428B2 (en) 2014-08-21
EP2265410A1 (en) 2010-12-29
DE102008023946B3 (en) 2009-04-02
AU2008356428A1 (en) 2009-11-19
US20110065369A1 (en) 2011-03-17
CN102026777A (en) 2011-04-20
CN102026777B (en) 2013-06-12
WO2009138114A1 (en) 2009-11-19
ES2380282T3 (en) 2012-05-10
ATE548159T1 (en) 2012-03-15
PL2265410T3 (en) 2012-08-31

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