EP2043817B1 - Grinding disk - Google Patents

Grinding disk Download PDF

Info

Publication number
EP2043817B1
EP2043817B1 EP07784585A EP07784585A EP2043817B1 EP 2043817 B1 EP2043817 B1 EP 2043817B1 EP 07784585 A EP07784585 A EP 07784585A EP 07784585 A EP07784585 A EP 07784585A EP 2043817 B1 EP2043817 B1 EP 2043817B1
Authority
EP
European Patent Office
Prior art keywords
grinding
disc
slots
segments
carrier
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
EP07784585A
Other languages
German (de)
French (fr)
Other versions
EP2043817A1 (en
Inventor
Franz Egger
Wolfgang Hassler
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.)
Tyrolit-Schleifmittelwerke Swarovski KG
Original Assignee
Tyrolit-Schleifmittelwerke Swarovski KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tyrolit-Schleifmittelwerke Swarovski KG filed Critical Tyrolit-Schleifmittelwerke Swarovski KG
Publication of EP2043817A1 publication Critical patent/EP2043817A1/en
Application granted granted Critical
Publication of EP2043817B1 publication Critical patent/EP2043817B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • B24D7/066—Grinding blocks; their mountings or supports

Definitions

  • the invention relates to a grinding wheel comprising a carrier disk and grinding segments, wherein the carrier disk has a rear side for attachment to a grinding machine and a front side for processing the abrasive material, wherein the grinding segments are inserted in slots of the carrier disk (see WO 99/28088 A1 ).
  • the object of the present invention is to provide a generic grinding wheel which has a longer durability compared to conventional grinding wheels.
  • the abrasive segments protrude axially parallel to the axis of rotation of the grinding wheel in the grinding direction of the grinding wheel on the carrier disc and on the side facing away from the grinding direction of the carrier disc with the carrier disc inextricably connected, preferably soldered, particularly preferably welded, are.
  • the attachment between the carrier disc and the abrasive segments can be done very easily, the abrasive segments protrude axially parallel to the axis of rotation on the grinding wheel.
  • an insoluble (or non-detachable) attachment mechanisms come the known attachment mechanisms in question, in particular solder or Welded joints, wherein the choice of attachment depends on the carrier material and the abrasive segment material.
  • the shear force on the individual abrasive segments can be further reduced in the context of an additional improvement by the grinding wheel is designed such that the slots are arranged obliquely to the radius of the grinding wheel. Part of the forces acting on the abrasive segments forces is better delivered to the carrier disc.
  • the slots are open towards the periphery of the grinding wheel. This makes it easier to produce the grinding wheel, and it is also beneficial for the grinding process itself, when the abrasive segments are arranged in the outer part of the grinding wheel.
  • the grinding segments can be arranged at virtually any angle ⁇ from 0 ° to 90 ° to the radius of the grinding wheels, it is provided in an embodiment that the slots with the radius enclose an angle ⁇ different from 90 °, preferably an angle of about 25 ° ,
  • the carrier disc has recesses. Very efficiently, the dust could be removed if the recesses are elongated or drop-shaped.
  • the recesses include an angle different from 90 ° with the radius of the grinding wheel, preferably an angle of about 25 °.
  • the inclination compared to the circumference or radius is in a very similar range favorable as the inclination of the abrasive segments, ie at an angle between 0 ° and 90 °, preferably about 25 °, ie, the segments and recesses could be arranged in parallel.
  • the recesses should not be too large, which is why it has proven to be advantageous if the recesses taper to the axis of rotation of the grinding wheel.
  • the invention of course also has the task of providing a method for producing a grinding wheel.
  • slots are introduced into the carrier disk, then abrasive segments are inserted into the slots so that they protrude axially parallel to the axis of rotation of the grinding wheel in the grinding direction of the grinding wheel on the carrier disk, and that finally the grinding segments on the side facing away from the grinding direction with the carrier disk connected, preferably welded. It is envisaged that the abrasive segments are introduced into the slots so that they protrude only to the front of the grinding wheel on the grinding wheel.
  • Abrasive wheels according to the invention are generally used with hand-operated machines (for example angle grinders).
  • the grinding wheel may have a hub. All recesses and slots can be introduced, for example, with a laser.
  • Fig. 1b is now a view of the back of a grinding wheel 1 according to the invention recognizable.
  • the grinding wheel 1 comprises a carrier disk 2 and numerous grinding segments 3, which are inserted into slot-shaped recesses 4 of the carrier disk 2.
  • the abrasive segments 3 are permanently attached to the support plate 2, in the case shown by a weld 11 on one side of the slot 4.
  • the slots 4 are arranged obliquely to the radius R of the grinding wheel 1.
  • the slots are 4 for The circumference U of the grinding wheel 1 is open.
  • the abrasive segments 3 can thus be easily inserted laterally into the slots 4 of the carrier disc 2.
  • two abrasive segments 3 are arranged side by side in certain slots 4.
  • the slots 4 include the radius R a different angle of 90 ° ⁇ . In the illustrated embodiment, this angle ⁇ is about 25 °.
  • the angle ⁇ is to be measured so that on the one hand the radius R of the grinding wheel 1 is used, which just touches the end of the slot 4 located at the circumference U (first axis). Should the slot 4 not extend to the circumference (and / or be curved), the tangent at the outermost edge of the slot 4 is used and optionally extended to the extent U, so that the radius R is used, where the tangent intersects the circumference U.
  • the second axis forms the slot itself. For a curved (and / or non-open) slot 4, the tangent at the outermost point of the slot 4 is to be used as an axis.
  • the abrasive segments 3 protrude from the plane of the carrier plate 2. However, in this embodiment they only do so in the direction of the front side, ie in the direction of the grinding. On the back of the grinding segments 3 are approximately positively in the slots, so that abrasive segments 3 and carrier plates 2 can be easily connected to each other. In the exemplary embodiment shown, it is envisaged to produce a connection by means of a weld seam 11 on the rear side. For this it is necessary that the abrasive segments 3 and the carrier disc 2 are made of materials which are welded together.
  • abrasive segments 3 are used with so-called spacers 17. These spacers 17 on the one hand wear the abrasive and on the other hand are well welded to the carrier plate 2, as well as in Fig. 2 will be explained in more detail.
  • FIG. 2 Such a grinding segment 3 with intermediate piece 17 is shown in side view (left) and in cross section (right).
  • the Indian Fig. 2 The area designated by the reference numeral 15 represents the area of the abrasive segment 3 which comprises the abrasive.
  • the region 16 is a so-called neutral region, which consists essentially of the same material as the grinding region, but has (almost) no abrasive grain.
  • Such abrasive segments 3 with intermediate pieces 17 can be produced, for example, by sintering binder containing cutting agent being sintered onto the material forming the intermediate pieces 17, after which individual intermediate pieces 17 with sintered abrasive segments 3 are cut off or cut off. In order to save expensive cutting means, just in the area 16, the cutting means can be left out.
  • the abrasive segment 3 thus produced with intermediate piece 17 can now be inserted with the intermediate piece region 17 into the slots 4 and welded to the carrier disk 2 in the simplest case.
  • the intermediate piece 17 is only required if the abrasive segment 3 does not connect directly to the carrier plate 2, preferably can be welded. If the abrasive segments 3 can be connected to the carrier disk 2 anyway, the intermediate pieces 17 can be dispensed with.
  • the abrasive segment 3 could be made of 25CrMo4 or St 52 (and have abrasive area 15), while the carrier disk could be 48CrMoV67 steel.
  • the intermediate pieces 17 consist of a steel with a carbon content of less than 0.35% or a carbon equivalent of less than 0.75%, in particular St 52 or 25CrMo 4, good weldability of spacers 17 and carrier disk 2 is ensured.
  • a coating could be applied to the abrasive segment 3.
  • Such a coating could consist, for example, of SnZnCo, CoSnZn and / or matt nickel.
  • the abrasive segments 3 have a length of 10 mm, are approximately square and flat.
  • the grinding wheel 1 described here is approximately circular and has round recesses 19 on the edge of the carrier disk 2, so that the grinding segments 3 are free. This allows processing of corners of a material to be sanded.
  • Other shapes for the grinding wheel are equally conceivable (for example, grinding discs and cup grinding wheels are mentioned here by way of example).

Abstract

Grinding disk, comprising a carrier disk and abrasive segments, wherein the carrier disk (2) has slits (4) and abrasive segments (3) inserted therein, wherein the abrasive segments (3) are permanently connected to the carrier disk (2), preferably by welding or soldering.

Description

Die Erfindung betrifft eine Schleifscheibe umfassend eine Trägerscheibe und Schleifsegmente, wobei die Trägerscheibe eine Rückseite zur Befestigung an einer Schleifmaschine und eine Vorderseite zur Bearbeitung des Schleifgutes aufweist, wobei die Schleifsegmente in Schlitzen der Trägerscheibe eingesetzt sind (siehe WO 99/28088 A1 ).The invention relates to a grinding wheel comprising a carrier disk and grinding segments, wherein the carrier disk has a rear side for attachment to a grinding machine and a front side for processing the abrasive material, wherein the grinding segments are inserted in slots of the carrier disk (see WO 99/28088 A1 ).

Schleifscheiben nach Stand der Technik, wie sie beispielsweise aus der EP 0 865 878 A2 bekannt sind, weisen den Nachteil auf, dass bei Verwendung der Schleifscheibe häufig einzelne Schleifsegmente von der Trägerscheibe abbrechen. Dies führt dazu, dass die Schleifscheibe unbrauchbar wird und ersetzt werden muss. Ursachen dafür sind unsachgemäße Verwendung oder inhomogene Materialien (Beton, Gesteine, Mauerwerk) für die gattungsgemäße Schleifscheiben Verwendung finden. Die Dokumente DE 38 02 340 A1 und US 3,517,463 zeigen Trennscheiben mit Trägerscheiben und darin eingesetzten Schleifsegmenten.Grinding wheels according to the prior art, as for example from the EP 0 865 878 A2 are known, have the disadvantage that when using the grinding disc often cancel individual abrasive segments of the carrier disk. As a result, the grinding wheel becomes unusable and must be replaced. Causes for this are improper use or inhomogeneous materials (concrete, rocks, masonry) for the generic grinding wheels use. The documents DE 38 02 340 A1 and US 3,517,463 show cutting discs with carrier discs and grinding segments inserted therein.

Die Aufgabe der vorliegenden Erfindung ist es, eine gattungsgemäße Schleifscheibe bereitzustellen, die eine längere Hältbarkeit gegenüber herkömmlichen Schleifscheiben aufweist.The object of the present invention is to provide a generic grinding wheel which has a longer durability compared to conventional grinding wheels.

Diese Aufgabe wird gelöst, indem die Schleifsegmente achsparallel zur Drehachse der Schleifscheibe in Schleifrichtung der Schleifscheibe über die Trägerscheibe hervorragen und an der der Schleifrichtung abgewandten Seite der Trägerscheibe mit der Trägerscheibe unlösbar verbunden, vorzugsweise verlötet, besonders bevorzugt verschweißt, sind. Durch das Einsetzen der Schleifsegmente in die Trägerscheibe treten keine Scherkräfte an der ursprünglich an der Oberfläche der Trägerscheibe liegenden Schweißverbindung auf. Da derartige Schleifscheiben eine Rückseite zur Befestigung an einer Schleifmaschine und eine Vorderseite zur eigentlichen Bearbeitung des Schleifgutes aufweisen, ist vorgesehen, dass die Schleifsegmente zur Vorderseite hin über die Trägerscheibe hervorstehen. Damit die Befestigung zwischen Trägerscheibe und den Schleifsegmenten sehr einfach erfolgen kann, ragen die Schleifsegmente achsparallel zur Drehachse über die Schleifscheibe hervor. Dies ermöglicht es, dass die Trägerscheibe und die Schleifsegmente auf der Rückseite, also der Schleifrichtung abgewandten Seite, miteinander verschweißt oder verlötet werden können. Deshalb ist weiters vorgesehen, dass die Schleifsegmente nur in einer achsparallelen Richtung über die Schleifscheibe vorragen, also an der Vorderseite. Als unlösbare (oder nichtlösbare) Befestigungsmechanismen kommen die an sich bekannten Befestigungsmechanismen in Frage, insbesondere Löt- oder Schweißverbindungen, wobei die Wahl der Befestigung vom Trägermaterial und vom Schleifsegmentmaterial abhängig ist.This object is achieved in that the abrasive segments protrude axially parallel to the axis of rotation of the grinding wheel in the grinding direction of the grinding wheel on the carrier disc and on the side facing away from the grinding direction of the carrier disc with the carrier disc inextricably connected, preferably soldered, particularly preferably welded, are. By inserting the abrasive segments into the carrier disk, no shear forces occur on the weld joint originally located on the surface of the carrier disk. Since such grinding wheels have a rear side for attachment to a grinding machine and a front side for the actual processing of the material to be sanded, it is provided that the sanding segments project toward the front side beyond the carrier disk. Thus, the attachment between the carrier disc and the abrasive segments can be done very easily, the abrasive segments protrude axially parallel to the axis of rotation on the grinding wheel. This makes it possible that the carrier disk and the abrasive segments on the back, ie the side facing away from the grinding direction, can be welded or soldered together. Therefore, it is further provided that the abrasive segments protrude only in an axis-parallel direction over the grinding wheel, ie on the front side. As an insoluble (or non-detachable) attachment mechanisms come the known attachment mechanisms in question, in particular solder or Welded joints, wherein the choice of attachment depends on the carrier material and the abrasive segment material.

Die Scherkraft auf die einzelnen Schleifsegmente kann im Rahmen einer zusätzlichen Verbesserung weiter verringert werden indem die Schleifscheibe derart ausgebildet ist, dass die Schlitze schräg zum Radius der Schleifscheibe angeordnet sind. Ein Teil der auf die Schleifsegmente wirkenden Kräfte wird so besser an die Trägerscheibe abgegeben.The shear force on the individual abrasive segments can be further reduced in the context of an additional improvement by the grinding wheel is designed such that the slots are arranged obliquely to the radius of the grinding wheel. Part of the forces acting on the abrasive segments forces is better delivered to the carrier disc.

Bevorzugt ist vorgesehen, dass die Schlitze zum Umfang der Schleifscheibe hin offen sind. Dadurch lässt sich die Schleifscheibe leichter herstellen, außerdem ist es für den Schleifvorgang selbst günstig, wenn die Schleifsegmente im äußeren Teil der Schleifscheibe angeordnet sind.It is preferably provided that the slots are open towards the periphery of the grinding wheel. This makes it easier to produce the grinding wheel, and it is also beneficial for the grinding process itself, when the abrasive segments are arranged in the outer part of the grinding wheel.

Obwohl die Schleifsegmente in praktisch jedem Winkel α von 0° bis 90° zum Radius der Schleifscheiben angeordnet sein können, ist in einer Ausführungsvariante vorgesehen, dass die Schlitze mit dem Radius einen von 90° verschiedenen Winkel α einschließen, vorzugsweise einen Winkel von etwa 25°.Although the grinding segments can be arranged at virtually any angle α from 0 ° to 90 ° to the radius of the grinding wheels, it is provided in an embodiment that the slots with the radius enclose an angle α different from 90 °, preferably an angle of about 25 ° ,

Da bei der Bearbeitung insbesondere von Gesteinen, Mauerwerk bzw. Beton, Vibrationen auftreten können, da solche Materialien meistens einen sehr inhomogenen Aufbau aufweisen, ist es vorteilhaft, wenn die Schlitze Hinterschneidungen aufweisen.Since in the processing of particular rock, masonry or concrete, vibrations may occur, since such materials usually have a very inhomogeneous structure, it is advantageous if the slots have undercuts.

Um den anfallenden Staub des abgetragenen Gesteins bzw. Mauerwerk günstig abführen zu können, hat es sich als vorteilhaft erwiesen, wenn die Trägerscheibe Ausnehmungen aufweist. Sehr effizient konnte der Staub abgeführt werden, wenn die Ausnehmungen länglich oder tropfenförmig sind. In Anlehnung an die schräg gestellten Schleifsegmente hat es sich außerdem als vorteilhaft gezeigt, wenn die Ausnehmungen einen von 90° verschiedenen Winkel mit dem Radius der Schleifscheibe einschließen, vorzugsweise einen Winkel von etwa 25°. Die Neigung im Vergleich zum Umfang bzw. Radius ist dabei in einem sehr ähnlichen Bereich günstig wie die Schrägstellung der Schleifsegmente, d.h. in einem Winkel zwischen 0° und 90°, vorzugsweise etwa 25°, d.h., die Segmente und Ausnehmungen könnten parallel angeordnet sein. Um die Schleifscheibe nicht unnötig zu schwächen, sollten die Ausnehmungen aber nicht zu groß werden, weshalb es sich als vorteilhaft erwiesen hat, wenn die Ausnehmungen sich zur Drehachse der Schleifscheibe verjüngen.In order to dissipate the accumulating dust of the removed rock or masonry low, it has proved to be advantageous if the carrier disc has recesses. Very efficiently, the dust could be removed if the recesses are elongated or drop-shaped. Based on the inclined abrasive segments, it has also been found to be advantageous if the recesses include an angle different from 90 ° with the radius of the grinding wheel, preferably an angle of about 25 °. The inclination compared to the circumference or radius is in a very similar range favorable as the inclination of the abrasive segments, ie at an angle between 0 ° and 90 °, preferably about 25 °, ie, the segments and recesses could be arranged in parallel. In order not to unnecessarily weaken the grinding wheel, however, the recesses should not be too large, which is why it has proven to be advantageous if the recesses taper to the axis of rotation of the grinding wheel.

Neben der erfindungsgemäßen Schleifscheibe stellt sich die Erfindung selbstverständlich auch die Aufgabe, ein Verfahren zum Herstellen einer Schleifscheibe zu liefern.In addition to the grinding wheel according to the invention, the invention of course also has the task of providing a method for producing a grinding wheel.

Dabei ist vorgesehen, dass in die Trägerscheibe Schlitze eingebracht werden, sodann Schleifsegmente in die Schlitze eingesetzt werden, sodass sie achsparallel zur Drehachse der Schleifscheibe in Schleifrichtung der Schleifscheibe über die Trägerscheibe hervorragen, und dass schließlich die Schleifsegmente an der der Schleifrichtung abgewandten Seite mit der Trägerscheibe verbunden, vorzugsweise verschweißt werden. Dabei ist vorgesehen, dass die Schleifsegmente derart in die Schlitze eingebracht werden, dass sie nur zur Vorderseite der Schleifscheibe über die Schleifscheibe hervorragen.It is envisaged that slots are introduced into the carrier disk, then abrasive segments are inserted into the slots so that they protrude axially parallel to the axis of rotation of the grinding wheel in the grinding direction of the grinding wheel on the carrier disk, and that finally the grinding segments on the side facing away from the grinding direction with the carrier disk connected, preferably welded. It is envisaged that the abrasive segments are introduced into the slots so that they protrude only to the front of the grinding wheel on the grinding wheel.

Erfindungsgemäße Schleifscheiben werden in der Regel mit handgeführten Maschinen (beispielsweise Winkelschleifgeräten) verwendet. Zur stabilen Verbindung der Schleifscheibe mit der Schleifmaschine kann die Schleifscheibe eine Nabe aufweisen. Sämtliche Ausnehmungen und Schlitze können beispielsweise mit einem Laser eingebracht werden.Abrasive wheels according to the invention are generally used with hand-operated machines (for example angle grinders). For stable connection of the grinding wheel with the grinding machine, the grinding wheel may have a hub. All recesses and slots can be introduced, for example, with a laser.

Für alle Bearbeitungsschritte, bei denen Ausnehmungen oder Schlitze in die Schleifscheibe eingebracht werden könnte vorgesehen sein, dass die Ausnehmungen und/oder Schlitze mittels Laser eingebracht werden.For all processing steps in which recesses or slots could be introduced into the grinding wheel, provision may be made for the recesses and / or slots to be introduced by means of a laser.

Weitere Vorteile und Details der Erfindung werden anhand des im Folgenden gezeigten Ausführungsbeispiels näher erläutert. Dabei zeigt:

Fig. 1
eine Ansicht auf die Rückseite (Fig. 1 b) einer erfindungsgemäßen Schleifscheibe sowie einen Querschnitt (Fig. 1a) durch dieselbe erfindungsgemäße Schleifscheibe, und
Fig. 2
eine Ausführungsvariante für Schleifsegmente, die für das erfindungsgemäße Verfahren (oder für erfindungsgemäße Schleifscheiben) Einsatz finden.
Further advantages and details of the invention will be explained in more detail with reference to the embodiment shown below. Showing:
Fig. 1
a view on the back ( Fig. 1 b) a grinding wheel according to the invention and a cross section ( Fig. 1a ) by the same grinding wheel according to the invention, and
Fig. 2
a variant for grinding segments, which are used for the inventive method (or grinding wheels according to the invention) use.

In Fig. 1b ist nun eine Ansicht auf die Rückseite einer erfindungsgemäßen Schleifscheibe 1 erkennbar. Die Schleifscheibe 1 umfasst eine Trägerscheibe 2 und zahlreiche Schleifsegmente 3, die in schlitzförmige Ausnehmungen 4 der Trägerscheibe 2 eingesetzt sind. Die Schleifsegmente 3 sind mit der Trägerscheibe 2 unlösbar befestigt, und zwar im gezeigten Fall durch eine Schweißnaht 11 auf einer Seite des Schlitzes 4. Die Schlitze 4 sind schräg zum Radius R der Schleifscheibe 1 angeordnet. Außerdem sind die Schlitze 4 zum Umfang U der Schleifscheibe 1 hin offen. Die Schleifsegmente 3 können somit leicht seitlich in die Schlitze 4 der Trägerscheibe 2 eingeschoben werden. Im gezeigten Beispiel sind in bestimmten Schlitzen 4 zwei Schleifsegmente 3 nebeneinander angeordnet. Die Schlitze 4 schließen mit dem Radius R einen von 90° verschiedenen Winkel α ein. Im gezeigten Ausführungsbeispiel beträgt dieser Winkel α etwa 25°. Der Winkel α ist dabei so zu messen, dass einerseits der Radius R der Schleifscheibe 1 herangezogen wird, der das am Umfang U gelegene Ende des Schlitzes 4 gerade berührt (erste Achse). Sollte der Schlitz 4 nicht bis zum Umfang reichen (und/oder gekrümmt sein), wird die Tangente am äußersten Rand des Schlitzes 4 herangezogen und gegebenenfalls bis zum Umfang U verlängert, sodass der Radius R verwendet wird, wo die Tangente den Umfang U schneidet. Die zweite Achse bildet der Schlitz selbst. Bei einem gekrümmten (und/oder nicht offenen) Schlitz 4 ist die Tangente im äußersten Punkt des Schlitzes 4 als Achse zu verwenden. Der zwischen diesen beiden Achsen eingeschlossene Winkel entspricht dem Winkel α. Wie aus der Fig. 1a erkennbar ist, ragen die Schleifsegmente 3 aus der Ebene der Trägerscheibe 2 hervor. Allerdings tun sie dies in diesem Ausführungsbeispiel nur in Richtung Vorderseite, d.h. in Schleifrichtung. Auf der Rückseite liegen die Schleifsegmente 3 etwa formschlüssig in den Schlitzen, sodass Schleifsegmente 3 und Trägerscheiben 2 leicht miteinander verbunden werden können. Im gezeigten Ausführungsbeispiel ist angedacht, eine Verbindung mittels einer Schweißnaht 11 an der Rückseite herzustellen. Dazu ist erforderlich, dass die Schleifsegmente 3 und die Trägerscheibe 2 aus Materialien bestehen, die miteinander verschweißbar sind. Ist dies nicht unmittelbar möglich, so könnte auf eine Lösung zurückgegriffen werden, wie sie in der EP 1 332 822 A1 beschrieben wird. Zu diesem Zweck werden Schleifsegmente 3 mit so genannten Zwischenstücken 17 verwendet. Diese Zwischenstücke 17 tragen einerseits das Schleifmittel und sind andererseits gut mit der Trägerscheibe 2 verschweißbar, wie dies auch in Fig. 2 noch ausführlicher erläutert wird.In Fig. 1b is now a view of the back of a grinding wheel 1 according to the invention recognizable. The grinding wheel 1 comprises a carrier disk 2 and numerous grinding segments 3, which are inserted into slot-shaped recesses 4 of the carrier disk 2. The abrasive segments 3 are permanently attached to the support plate 2, in the case shown by a weld 11 on one side of the slot 4. The slots 4 are arranged obliquely to the radius R of the grinding wheel 1. In addition, the slots are 4 for The circumference U of the grinding wheel 1 is open. The abrasive segments 3 can thus be easily inserted laterally into the slots 4 of the carrier disc 2. In the example shown, two abrasive segments 3 are arranged side by side in certain slots 4. The slots 4 include the radius R a different angle of 90 ° α. In the illustrated embodiment, this angle α is about 25 °. The angle α is to be measured so that on the one hand the radius R of the grinding wheel 1 is used, which just touches the end of the slot 4 located at the circumference U (first axis). Should the slot 4 not extend to the circumference (and / or be curved), the tangent at the outermost edge of the slot 4 is used and optionally extended to the extent U, so that the radius R is used, where the tangent intersects the circumference U. The second axis forms the slot itself. For a curved (and / or non-open) slot 4, the tangent at the outermost point of the slot 4 is to be used as an axis. The included between these two axes angle corresponds to the angle α. Like from the Fig. 1a can be seen, the abrasive segments 3 protrude from the plane of the carrier plate 2. However, in this embodiment they only do so in the direction of the front side, ie in the direction of the grinding. On the back of the grinding segments 3 are approximately positively in the slots, so that abrasive segments 3 and carrier plates 2 can be easily connected to each other. In the exemplary embodiment shown, it is envisaged to produce a connection by means of a weld seam 11 on the rear side. For this it is necessary that the abrasive segments 3 and the carrier disc 2 are made of materials which are welded together. If this is not immediately possible, a solution could be resorted to, as used in the EP 1 332 822 A1 is described. For this purpose, abrasive segments 3 are used with so-called spacers 17. These spacers 17 on the one hand wear the abrasive and on the other hand are well welded to the carrier plate 2, as well as in Fig. 2 will be explained in more detail.

In Fig. 2 ist ein solches Schleifsegment 3 mit Zwischenstück 17 in Seitenansicht (links) und im Querschnitt (rechts) gezeigt. Der in der Fig. 2 mit dem Bezugszeichen 15 gekennzeichnete Bereich stellt den Bereich des Schleifsegmentes 3 dar, der das Schleifmittel aufweist. Der Bereich 16 ist ein so genannter Neutralbereich, der im Wesentlichen aus demselben Material wie der Schleifbereich besteht, aber (fast) kein Schleifkorn aufweist. Solche Schleifsegmente 3 mit Zwischenstücken 17 lassen sich beispielsweise herstellen, indem Schneidmittel enthaltendes sinterfähiges Bindemittel auf das die Zwischenstücke 17 bildende Material aufgesintert wird, wonach einzelne Zwischenstücke 17 mit aufgesinterten Schleifsegmenten 3 aus- oder abgeschnitten werden. Um teures Schneidmittel zu sparen, kann eben im Bereich 16 das Schneidmittel ausgespart werden. Das so erzeugte Schleifsegment 3 mit Zwischenstück 17 kann nun mit dem Zwischenstückbereich 17 in die Schlitze 4 eingeschoben werden und mit der Trägerscheibe 2 im einfachsten Fall verschweißt werden. Das Zwischenstück 17 ist nur dann erforderlich, wenn sich das Schleifsegment 3 nicht direkt mit der Trägerscheibe 2 verbinden, vorzugsweise verschweißen lassen. Sind die Schleifsegmente 3 ohnehin mit der Trägerscheibe 2 verbindbar, kann auf die Zwischenstücke 17 verzichtet werden. Das Schleifsegment 3 könnte beispielsweise aus 25CrMo4 oder St 52 bestehen (und im Bereich 15 Schleifmittel aufweisen), während die Trägerscheibe aus 48CrMoV67 Stahl bestehen könnte. Bestehen die Zwischenstücke 17 aus einem Stahl mit einem Kohlenstoffgehalt von weniger als 0,35 % oder einem Kohlenstoffäquivalent von weniger als 0,75 %, insbesondere St 52 oder 25CrMo4, ist gute Verschweißbarkeit von Zwischenstücken 17 und Trägerscheibe 2 sichergestellt. Gegebenenfalls könnte auf das Schleifsegment 3 auch eine Beschichtung aufgebracht werden. Eine solche Beschichtung könnte beispielsweise aus SnZnCo, CoSnZn und/oder Mattnickel bestehen. Im vorliegenden Fall weisen die Schleifsegmente 3 eine Länge von 10 mm auf, sind etwa quadratisch und flächig ausgebildet.In Fig. 2 Such a grinding segment 3 with intermediate piece 17 is shown in side view (left) and in cross section (right). The Indian Fig. 2 The area designated by the reference numeral 15 represents the area of the abrasive segment 3 which comprises the abrasive. The region 16 is a so-called neutral region, which consists essentially of the same material as the grinding region, but has (almost) no abrasive grain. Such abrasive segments 3 with intermediate pieces 17 can be produced, for example, by sintering binder containing cutting agent being sintered onto the material forming the intermediate pieces 17, after which individual intermediate pieces 17 with sintered abrasive segments 3 are cut off or cut off. In order to save expensive cutting means, just in the area 16, the cutting means can be left out. The abrasive segment 3 thus produced with intermediate piece 17 can now be inserted with the intermediate piece region 17 into the slots 4 and welded to the carrier disk 2 in the simplest case. The intermediate piece 17 is only required if the abrasive segment 3 does not connect directly to the carrier plate 2, preferably can be welded. If the abrasive segments 3 can be connected to the carrier disk 2 anyway, the intermediate pieces 17 can be dispensed with. For example, the abrasive segment 3 could be made of 25CrMo4 or St 52 (and have abrasive area 15), while the carrier disk could be 48CrMoV67 steel. If the intermediate pieces 17 consist of a steel with a carbon content of less than 0.35% or a carbon equivalent of less than 0.75%, in particular St 52 or 25CrMo 4, good weldability of spacers 17 and carrier disk 2 is ensured. Optionally, a coating could be applied to the abrasive segment 3. Such a coating could consist, for example, of SnZnCo, CoSnZn and / or matt nickel. In the present case, the abrasive segments 3 have a length of 10 mm, are approximately square and flat.

Die hier beschriebene Schleifscheibe 1 ist etwa kreisrund und hat runde Ausnehmungen 19 am Rand der Trägerscheibe 2, damit die Schleifsegmente 3 frei stehen. Dies ermöglicht eine Bearbeitung von Ecken eines Schleifgutes. Andere Formen für die Schleifscheibe sind selbstverständlich genauso denkbar (beispielhaft seien hier noch Schleifteller und Topfschleifscheiben angeführt).The grinding wheel 1 described here is approximately circular and has round recesses 19 on the edge of the carrier disk 2, so that the grinding segments 3 are free. This allows processing of corners of a material to be sanded. Of course, other shapes for the grinding wheel are equally conceivable (for example, grinding discs and cup grinding wheels are mentioned here by way of example).

Claims (15)

  1. A grinding disc (1) including a carrier disc (2) and grinding segments (3), wherein the carrier disc (2) has a rear side for fixing to a grinding machine and a front side for working on the material to be ground, wherein the grinding segments (3) are fitted in slots (4) in the carrier disc (2), characterised in that the slots (4) extend from the rear side to the front side of the carrier disc (2), wherein the grinding segments (3) are non-releasably connected to the rear side of the carrier disc (2), preferably by welding or soldering, and wherein the grinding segments (3) project beyond the front side of the grinding disc (1) only in a direction in axis-parallel relationship with the axis of rotation (D).
  2. A grinding disc according to claim 1 characterised in that the slots (4) are arranged inclinedly relative to the radius (R) of the grinding disc (1).
  3. A grinding disc according to claim 1 or claim 2 characterised in that the slots (4) are open towards the periphery (U) of the grinding disc (1).
  4. A grinding disc according to claim 2 or claim 3 characterised in that the slots (4) include with the radius (R) an angle α different from 90°, preferably an angle of about 25°.
  5. A grinding disc according to one of claims 1 to 4 characterised in that the slots (4) have undercut configurations (5).
  6. A grinding disc according to one of claims 1 to 5 characterised in that the carrier disc (2) has openings (6).
  7. A grinding disc according to claim 6 characterised in that the openings (6) are elongate or drop-shaped.
  8. A grinding disc according to claim 7 characterised in that the openings (6) include an angle different from 90° with the radius (R) of the grinding disc (1), preferably an angle of about 25°.
  9. A grinding disc according to claim 7 or claim 8 characterised in that the openings (6) narrow towards the axis of rotation (D) of the grinding disc (1).
  10. A process for producing a grinding disc (1) having a rear side for fixing to a grinding machine and a front side for working on the material to be ground, including a carrier disc (2) and grinding segments (3), in particular according to one of claims 1 to 9, characterised in that introduced into the carrier disc (2) are slots (4) which extend from the rear side to the front side of the carrier disc (2), then grinding segments (3) are fitted into the slots (4) so that they project beyond the front side of the grinding disc (1) in axis-parallel relationship with the axis of rotation (D) of the grinding disc (1) only in a direction in axis-parallel relationship with the axis of rotation (D) and finally the grinding segments (3) are non-releasably connected, preferably welded, to the rear side of the carrier disc (2).
  11. A process according to claim 10 characterised in that the grinding segments (3) are introduced into the slots (4) in such a way that they project beyond the carrier disc (2) only in the grinding direction of the grinding disc (1).
  12. A process according to one of claims 10 and 11 characterised in that a central opening (7) is introduced along the axis of rotation (D).
  13. A process according to claim 12 characterised in that a hub (8) for fixing the grinding disc (1) to a grinding machine is introduced into the central opening (7).
  14. A process according to one of claims 10 to 13 characterised in that the openings (5, 6, 7) and/or slots (4) are produced by means of a laser.
  15. A process according to claim 14 characterised in that the hub (8) is welded to the carrier disc (2), preferably by means of laser welding.
EP07784585A 2006-07-25 2007-07-20 Grinding disk Not-in-force EP2043817B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0126106A AT503981B1 (en) 2006-07-25 2006-07-25 WHEEL
PCT/AT2007/000354 WO2008011646A1 (en) 2006-07-25 2007-07-20 Grinding disk

Publications (2)

Publication Number Publication Date
EP2043817A1 EP2043817A1 (en) 2009-04-08
EP2043817B1 true EP2043817B1 (en) 2010-11-24

Family

ID=38626919

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07784585A Not-in-force EP2043817B1 (en) 2006-07-25 2007-07-20 Grinding disk

Country Status (5)

Country Link
EP (1) EP2043817B1 (en)
AT (2) AT503981B1 (en)
DE (1) DE502007005773D1 (en)
ES (1) ES2356853T3 (en)
WO (1) WO2008011646A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011095915A1 (en) 2010-02-03 2011-08-11 Koninklijke Philips Electronics N.V. Phosphor converted led

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1060405A (en) * 1964-05-25 1967-03-01 Impregnated Diamond Prod Ltd Improvements in diamond impregnated tools
US3517463A (en) * 1968-03-06 1970-06-30 Super Cut Rotary segmental saw with drycutting characteristics
DE3802340A1 (en) * 1988-01-27 1989-08-10 Philipp Persch Nachf Inh Fritz Cut-off disc
US6196911B1 (en) * 1997-12-04 2001-03-06 3M Innovative Properties Company Tools with abrasive segments
KR100314287B1 (en) * 1999-07-29 2001-11-23 김세광 Grinding wheel
ATE230327T1 (en) * 1999-10-14 2003-01-15 Carbodiam S A PRODUCTION PROCESS OF A GRINDING DISC
JP2001205560A (en) * 2000-01-28 2001-07-31 Disco Abrasive Syst Ltd Grinding wheel and manufacturing method for grinding wheel
KR100492854B1 (en) * 2004-09-15 2005-06-02 세원테크 주식회사 Grinding wheel

Also Published As

Publication number Publication date
WO2008011646A1 (en) 2008-01-31
AT503981A1 (en) 2008-02-15
ATE489200T1 (en) 2010-12-15
ES2356853T3 (en) 2011-04-13
AT503981B1 (en) 2008-12-15
DE502007005773D1 (en) 2011-01-05
EP2043817A1 (en) 2009-04-08

Similar Documents

Publication Publication Date Title
DE202005021957U1 (en) grinding wheel
EP2374936B1 (en) Mill cylinder for a floor milling machine and floor milling machine
DE10130477B4 (en) Grinding wheel with segments to prevent unilateral wear
DE10335115A1 (en) grinding roll
EP2440371B1 (en) Grinding and/or polishing tool, and production method
EP1867420A1 (en) Saw blade with lateral buckles
EP2043817B1 (en) Grinding disk
DE19855364B4 (en) cutting part
DE102006045552B3 (en) Grinding layer for rotary grinding tool has inner concave edge and outer convex edge symmetrical around common point
EP1820618B1 (en) Cutting tool
WO2010149718A1 (en) Segment cut-off wheel
EP1332822A1 (en) Bandsaw
WO2001000351A1 (en) Shaft tool with fixedly disposed winglike inserts
EP1207010B1 (en) Grinding machine
EP3538320B1 (en) Grinding element and grinding apparatus
EP2712337B1 (en) Abrasive cutting-off wheel
DE202007011503U1 (en) cutting blade
EP1210218A1 (en) Saw blade and method for producing a saw blade
EP0657251B1 (en) Cutting-off grinding disc for stationary grinding machine and use of same
DE10208914A1 (en) Grinding disc, for power tool to grind and separate welding electrodes, has stepped inner and outer disc areas with step between them
WO2013017944A1 (en) Hard-material sawtooth
DE102009060568A1 (en) Cutting device and cutting knife for cutting rod-shaped products of the tobacco processing industry
DE2833688C2 (en) Disintegrator drum
EP1749618B1 (en) Wheel for cutting-off or grinding
DE10302318C1 (en) Blade segment for cutting disc has side contact surfaces provided with recesses and projections forming corrugations reducing heating of workpiece during cutting

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20090128

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK RS

17Q First examination report despatched

Effective date: 20090714

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REF Corresponds to:

Ref document number: 502007005773

Country of ref document: DE

Date of ref document: 20110105

Kind code of ref document: P

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: ZIMMERLI, WAGNER & PARTNER AG

REG Reference to a national code

Ref country code: NL

Ref legal event code: VDEP

Effective date: 20101124

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2356853

Country of ref document: ES

Kind code of ref document: T3

Effective date: 20110413

LTIE Lt: invalidation of european patent or patent extension

Effective date: 20101124

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20101124

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20101124

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110224

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20101124

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20101124

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110324

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20101124

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110324

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20101124

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20101124

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110225

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20101124

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20101124

Ref country code: IE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20101124

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20101124

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20101124

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20101124

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20101124

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20110825

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502007005773

Country of ref document: DE

Effective date: 20110825

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20101124

BERE Be: lapsed

Owner name: TYROLIT - SCHLEIFMITTELWERKE SWAROVSKI K.G.

Effective date: 20110731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110731

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20110720

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110720

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110720

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 489200

Country of ref document: AT

Kind code of ref document: T

Effective date: 20120731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20101124

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120731

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20101124

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20130711

Year of fee payment: 7

Ref country code: CH

Payment date: 20130806

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20130731

Year of fee payment: 7

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: WAGNER PATENT AG, CH

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20150331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140731

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140731

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20150826

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140721

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20200724

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20200624

Year of fee payment: 14

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 502007005773

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20220201

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210720