EP1332834B1 - Cut-off wheel with lateral steel plates - Google Patents

Cut-off wheel with lateral steel plates Download PDF

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Publication number
EP1332834B1
EP1332834B1 EP02001641A EP02001641A EP1332834B1 EP 1332834 B1 EP1332834 B1 EP 1332834B1 EP 02001641 A EP02001641 A EP 02001641A EP 02001641 A EP02001641 A EP 02001641A EP 1332834 B1 EP1332834 B1 EP 1332834B1
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EP
European Patent Office
Prior art keywords
cut
wheel
steel
steel sheets
grids
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP02001641A
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German (de)
French (fr)
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EP1332834A1 (en
Inventor
Adolf Lang
Florian Meissl
Markus Bosin
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
Priority to DE50200094T priority Critical patent/DE50200094D1/en
Priority to ES02001641T priority patent/ES2208616T3/en
Application filed by Tyrolit-Schleifmittelwerke Swarovski KG filed Critical Tyrolit-Schleifmittelwerke Swarovski KG
Priority to SI200230006T priority patent/SI1332834T1/en
Priority to DE20220787U priority patent/DE20220787U1/en
Priority to EP02001641A priority patent/EP1332834B1/en
Priority to AT02001641T priority patent/ATE253433T1/en
Priority to DE20220516U priority patent/DE20220516U1/en
Priority to US10/472,572 priority patent/US7115029B2/en
Priority to PCT/AT2003/000022 priority patent/WO2003061910A1/en
Priority to BRPI0302833-0A priority patent/BR0302833B1/en
Priority to CNB038000865A priority patent/CN100391695C/en
Priority to CZ20032522A priority patent/CZ297689B6/en
Priority to PL362770A priority patent/PL205513B1/en
Publication of EP1332834A1 publication Critical patent/EP1332834A1/en
Application granted granted Critical
Publication of EP1332834B1 publication Critical patent/EP1332834B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • B24D5/12—Cut-off wheels
    • 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 present invention relates to a cutting disc with a diameter over 500 mm, which is clamped between clamping flanges, with a mixture of Abrasive grain, binder and optionally fillers from the outer edge of the Cutting disc extends to the center hole, with the cutting disc laterally with Steel sheets or steel mesh is provided (see US 3,898,773).
  • Object of the present invention is therefore to provide a cutting disc, the despite being stable in relation to the diameter of a small disk thickness, wherein At the same time the problems of the known approaches are avoided.
  • the steel sheets or steel mesh are glued to the cutting disc.
  • the steel sheets or steel mesh can thus also in the edge zones of the cutting disc Optionally absorb occurring bending stresses, so that a tumbling effect is prevented.
  • the Steel sheets or steel mesh have a substantially round shape.
  • the inventive method provides that first a steel sheet or steel mesh with a minimum thickness of 0.5 mm and with a radial extent of Clamping flanges exceeding extension placed on a Preßptatte, then the mixture of abrasive grain, binder and optionally fillers applied and finally compressed, so that the steel sheet or steel mesh is inserted flush in the side surface.
  • This manufacturing process is Production technology particularly favorable and at the same time ensures a firm hold the Steel sheets or steel mesh.
  • This hold can be further improved by using the steel sheets or Steel grid before pressing on the side facing the blade with a Glue, in particular epoxy glue, be provided.
  • the cutting disc 1 shown in the figures is a Resin-bonded grinding wheel.
  • a resin various phenolic resins used by their targeted selection in conjunction with the choice of Abrasive and the fillers the grinding behavior and the degree of hardness of Cutting disc is adapted to the respective requirements.
  • abrasives are preferred conventional abrasives such as silicon carbide and Corundum used.
  • fillers are mainly solid lubricants, for example Pyrite and graphite, as well as common powdered materials for plastic reinforcement such Calcium carbonate or glass powder.
  • the diameter d of the cutting wheel 1 is typically between 800 mm and 1800 mm.
  • the ratio of diameter d to width b is over 80, preferably even over 100. This ratio is due to the present Invention be further increased. It should be noted that the width b of the Cutting disc 1 for reasons of clarity in the figures in relation to Diameter d is drawn many times too large.
  • the cutting disk 1 has recesses 3 in the lateral end faces, which are extend over a diameter range of diameter d from 45% to 80%. In the recesses 3, the steel sheets or steel mesh 2 are substantially flush used.
  • the steel sheets or steel mesh 2 have a minimum thickness of 0.5 mm and can be up to 3.0 mm thick, with common values being more likely between 1.0 mm and 2.0 mm lie.
  • the steel sheets form a closed surface, whereas under Steel mesh structures are understood, the recesses, in particular have rectangular recesses.
  • the steel sheets or steel mesh 2 are with glued the remaining blade 1.
  • the steel sheets 2 are round in the embodiment shown, as shown in FIG. 3rd seen. Even if the round shape is favorable for quiet concentricity, are also any other shapes, especially polygons, conceivable.
  • Fig. 1 the two cooperating clamping flanges 5a and 5b are shown, with where the power is transmitted to the cutting wheel 1.
  • the steel sheets or Steel grille 2 cause the introduction of force not only to the area of Clamping flanges 5a and 5b remains limited, but essentially to the extends the entire surface covering the steel sheets or steel mesh 2.
  • the Stabilization of the cutting wheel 1 thus extends radially far outward.
  • the cutting disc 1 has a fabric insert 6. It is a resin-impregnated glass fiber fabric.
  • the fabric insert 6 stabilizes the blade 1 and prevents the formation of stray Slice fragments in case of failure of the disc.
  • the present invention allows to get along with only one or at least a few fabric inserts 6. Also conceivable is a variant without tissue insert. This is insofar advantageous, as in reduction of the tissue layers, the volume of the tissue through Abrasive grain can be replaced, whereby the grinding properties are improved.
  • the preparation of the cutting discs according to the invention is such that from Abrasive grain, synthetic resin and fillers a mixture is made. On a round Press plate is first placed a steel or steel mesh 2 and then the Mixture of abrasive grain, synthetic resin and fillers applied. In this mixture the fabric inserts 6 are inserted. Then it is compressed, taking at the Surface is formed a recess 3. In this recess 3, the second Steel plate or steel grille 2 inserted, after which a further pressing takes place. The steel sheets or steel mesh 2 are applied to the before processing Cutting disc 1 facing side provided with an epoxy adhesive.
  • the pressed sandwich is then clamped between straightening plates and in Oven cured at a suitable temperature.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Sawing (AREA)
  • Straightening Metal Sheet-Like Bodies (AREA)
  • Milling Processes (AREA)
  • Shearing Machines (AREA)
  • Handcart (AREA)

Abstract

The steel side sheets (2) or grids lie flush in side surface recesses of the parting disc (1) and are each at least 0.5 mm thick. Their radial extent exceeds the radius of the clamping flanges (5a, 5b). An Independent claim is also included for the method of manufacture.

Description

Die vorliegende Erfindung betrifft eine Trennscheibe mit einem Durchmesser über 500 mm, die zwischen Spannflanschen einspannbar ist, mit einer Mischung aus Schleifkorn, Bindemittel und gegebenenfalls Füllstoffen, die vom Außenrand der Trennscheibe bis an die Mittelbohrung reicht, wobei die Trennscheibe seitlich mit Stahlblechen oder Stahlgittern versehen ist (siehe US 3,898,773).The present invention relates to a cutting disc with a diameter over 500 mm, which is clamped between clamping flanges, with a mixture of Abrasive grain, binder and optionally fillers from the outer edge of the Cutting disc extends to the center hole, with the cutting disc laterally with Steel sheets or steel mesh is provided (see US 3,898,773).

Trennscheiben mit großen Durchmessern werden in der metallerzeugenden Industrie verwendet, wo beispielsweise in Stahlwerken oder Gießereien Brammen getrennt werden. Hierbei ist es günstig, die Scheibenstärke der Trennscheiben möglichst gering zu halten, um die Schnittverluste bei den hochwertigen und teuren metallischen Werkstoffen gering zu halten. Zudem führt eine geringe Scheibenstärke dazu, daß der Leistungsaufwand der Trennmaschine sinkt, wodurch sämtliche mechanischen und elektrischen Komponenten der Trennmaschine bei gleichem Trennergebnis weniger belastet werden.Large diameter cutting discs are used in the metal producing industry used where, for example, in steel mills or foundries slabs separated become. It is favorable, the disc thickness of the cutting discs as low as possible to keep the cutting losses in the high quality and expensive metallic Keep materials low. In addition, a low disk thickness causes the Power consumption of the cutting machine decreases, causing all mechanical and electrical components of the cutting machine with the same separation result less be charged.

Bei der Reduzierung der Scheibenstärke ist man derzeit mit dem Problem konfrontiert, daß die im Verhältnis zu ihrem Durchmesser sehr dünnen Scheiben zum Taumeln neigen. Um dieses Taumeln zu verhindern, wurde einerseits versucht, die Spannflansche im Durchmesser zu vergrößern, um die Trennscheiben radial weiter außen zu stabilisieren. Die Vergrößerung der Spannflansche führt jedoch zu einer Verringerung der möglichen Schnitttiefe sowie zu größeren bewegten Massen.Reducing disk thickness is currently a problem that in relation to their diameter very thin disks to tumble tend. To prevent this tumbling, on the one hand tried, the To increase the clamping flanges in diameter, radially to the cutting discs stabilize outside. The enlargement of the clamping flanges, however, leads to a Reduction of the possible cutting depth and larger moving masses.

Bei einem zweiten Lösungsweg wurde beispielsweise bei den in der JP 57 089 564 oder US 4,718,398 gezeigten Schleifscheiben versucht, auf einen ausschließlich metallischen Innenbereich der Trennscheibe außen einen kreisringförmigen Schleifbereich aufzusetzen. Das Problem einer stabilen und dauerhaften Verbindung von metallischem Innenbereich und außenliegendem Schleifbereich konnte bisher jedoch noch nicht zufriedenstellend gelöst werden.In a second approach, for example, in the JP 57 089 564 or US Pat. No. 4,718,398 attempts to use one exclusively Metallic interior of the cutting wheel outside an annular Set up grinding area. The problem of a stable and permanent connection of metallic interior and external grinding area could so far However, not yet be solved satisfactorily.

Die in der US 1,600,064 gezeigte Schleifscheibe weist mit den Spannflanschen flächengleiche seitliche Auflagen auf. Diese Auflagen sind damit nicht in der Lage, die Einspannkräfte über die Spannflansche hinaus großflächig zu verteilen. Eine radiale Vergrößerung der in der US 1,600,064 gezeigten Auflagen hätte eine Verringerung der möglichen Schnitttiefe zur Folge.The grinding wheel shown in US 1,600,064 has with the clamping flanges coextensive lateral constraints on. These requirements are therefore not able to Distribute clamping forces over the clamping flanges over a large area. A radial Enlargement of the conditions shown in US 1,600,064 would have reduced the possible depth of cut result.

Aufgabe der vorliegenden Erfindung ist es daher, eine Trennscheibe zu schaffen, die trotz im Verhältnis zum Durchmesser geringer Scheibenstärke stabil läuft, wobei gleichzeitig die Probleme der bekannten Lösungsansätze vermieden werden.Object of the present invention is therefore to provide a cutting disc, the despite being stable in relation to the diameter of a small disk thickness, wherein At the same time the problems of the known approaches are avoided.

Dies wird erfindungsgemäß dadurch erreicht, daß die Stahlbleche oder Stahlgitter bündig in Vertiefungen in den Seitenflächen der Trennscheibe eingefügt sind und eine Mindeststärke von 0,5 mm sowie eine die radiale Erstreckung der Spannflansche übersteigende radiale Erstreckung aufweisen.This is inventively achieved in that the steel sheets or steel mesh are flush inserted into recesses in the side surfaces of the cutting disc and a Minimum thickness of 0.5 mm and a radial extent of the clamping flanges have excess radial extent.

Die seitlich bündig in die axialen Stirnflächen der Trennscheibe eingefügten Stahlbleche oder Stahlgitter führen zu einer großflächigen Verteilung der von den Spannflanschen ausgehenden Einspannkräfte. Da die Stahlbleche oder Stahlgitter radial weiter nach außen reichen als die Spannflansche, wird die Trennscheibe großflächig stabilisiert. Aufgrund der bündigen Einbettung der Stahlbleche oder Stahlgitter, die eine unveränderte Schnitttiefe bis zu den Spannflanschen sicherstellt, kann eine ausreichende Mindeststärke von mindestens 0,5 mm gewählt werden, die eine optimale Kräfteverteilung sichert.The laterally flush inserted into the axial end faces of the cutting disc Steel sheets or steel mesh lead to a large distribution of the Clamping flanges outgoing clamping forces. Because the steel sheets or steel mesh extend radially outward than the clamping flanges, the cutting disc stabilized over a large area. Due to the flush embedding of the steel sheets or Steel grille, which ensures an unchanged cutting depth up to the clamping flanges, a minimum thickness of at least 0.5 mm may be chosen ensures an optimal distribution of forces.

Um eine optimale Übertragung der Einspannkräfte sicherzustellen, ist es günstig, wenn die Stahlbleche oder Stahlgitter mit der Trennscheibe verklebt sind. Die Stahlbleche oder Stahlgitter können damit auch die in den Randzonen der Trennscheibe auftretenden Biegebeanspruchungen optimal aufnehmen, sodaß ein Taumeln wirksam unterbunden wird.To ensure optimum transfer of the clamping forces, it is advantageous if the steel sheets or steel mesh are glued to the cutting disc. The steel sheets or steel mesh can thus also in the edge zones of the cutting disc Optionally absorb occurring bending stresses, so that a tumbling effect is prevented.

Für ruhige Rundlaufeigenschaften der Trennscheibe ist es günstig, wenn die Stahlbleche oder Stahlgitter im wesentlichen eine runde Form aufweisen.For quiet concentricity of the cutting disc, it is advantageous if the Steel sheets or steel mesh have a substantially round shape.

Im Sinne einer weiteren Stabilisierung der Trennscheibe kann diese in an sich bekannter Weise mindestens eine Gewebeeinlage aufweisen.In terms of further stabilization of the cutting disc, this can in itself known manner have at least one fabric insert.

Das erfindungsgemäße Verfahren sieht vor, daß zuerst ein Stahlblech oder Stahlgitter mit einer Mindeststärke von 0,5 mm und mit einer die radiale Erstreckung der Spannflansche übersteigenden Erstreckung auf eine Preßptatte aufgelegt, anschließend die Mischung aus Schleifkorn, Bindemittel und gegebenenfalls Füllstoffen aufgebracht und schließlich verdichtet wird, sodaß das Stahlblech oder Stahlgitter bündig in die Seitenfläche eingesetzt ist. Dieses Herstellverfahren ist produktionstechnisch besonders günstig und sichert gleichzeitig einen festen Halt der Stahlbleche oder Stahlgitter.The inventive method provides that first a steel sheet or steel mesh with a minimum thickness of 0.5 mm and with a radial extent of Clamping flanges exceeding extension placed on a Preßptatte, then the mixture of abrasive grain, binder and optionally fillers applied and finally compressed, so that the steel sheet or steel mesh is inserted flush in the side surface. This manufacturing process is Production technology particularly favorable and at the same time ensures a firm hold the Steel sheets or steel mesh.

Dieser Halt kann noch weiter verbessert werden, indem die Stahlbleche oder Stahlgitter vor dem Verpressen auf der der Trennscheibe zugewandten Seite mit einem Kleber, insbesondere Epoxikleber, versehen werden. This hold can be further improved by using the steel sheets or Steel grid before pressing on the side facing the blade with a Glue, in particular epoxy glue, be provided.

Weitere Merkmale und Einzelheiten der vorliegenden Erfindung ergeben sich aus der nachfolgenden Figurenbeschreibung. Dabei zeigt:

  • Fig. 1 eine Explosionsdarstellung einer erfindungsgemäßen Trennscheibe,
  • Fig. 2 einen Schnitt durch die Trennscheibe entlang der Linie A-A in Fig. 3 und
  • Fig. 3 eine Seitenansicht der Trennscheibe.
    • Further features and details of the present invention will become apparent from the following description of the figures. Showing:
  • 1 is an exploded view of a blade according to the invention,
  • 2 shows a section through the cutting disk along the line AA in Fig. 3 and
  • Fig. 3 is a side view of the blade.

    • Bei der in den Figuren dargestellten Trennscheibe 1 handelt es sich um eine kunstharzgebundene Schleifscheibe. Als Kunstharz werden verschiedene Phenolharze verwendet, durch deren gezielte Auswahl im Zusammenspiel mit der Wahl des Schleifmittels und der Füllstoffe das Schleifverhalten sowie der Härtegrad der Trennscheibe den jeweiligen Erfordernissen angepaßt wird.The cutting disc 1 shown in the figures is a Resin-bonded grinding wheel. As a resin, various phenolic resins used by their targeted selection in conjunction with the choice of Abrasive and the fillers the grinding behavior and the degree of hardness of Cutting disc is adapted to the respective requirements.

    Als Schleifmittel werden bevorzugt konventionelle Schleifmittel wie Siliziumcarbid und Korunde eingesetzt. Als Füllstoffe dienen vor allem Festschmierstoffe, beispielsweise Pyrit und Graphit, sowie übliche gepulverte Materialien zur Kunststoffverstärkung wie Kalziumcarbonat oder Glaspulver.As abrasives are preferred conventional abrasives such as silicon carbide and Corundum used. As fillers are mainly solid lubricants, for example Pyrite and graphite, as well as common powdered materials for plastic reinforcement such Calcium carbonate or glass powder.

    Der Durchmesser d der Trennscheibe 1 liegt typischerweise zwischen 800 mm und 1800 mm. Die Verhältniszahl von Durchmesser d zu Breite b liegt über 80, vorzugsweise sogar über 100. Diese Verhältniszahl soll aufgrund der vorliegenden Erfindung noch weiter gesteigert werden. Es sei angemerkt, daß die Breite b der Trennscheibe 1 aus Anschaulichkeitsgründen in den Figuren im Verhältnis zum Durchmesser d um ein Vielfaches zu groß gezeichnet ist.The diameter d of the cutting wheel 1 is typically between 800 mm and 1800 mm. The ratio of diameter d to width b is over 80, preferably even over 100. This ratio is due to the present Invention be further increased. It should be noted that the width b of the Cutting disc 1 for reasons of clarity in the figures in relation to Diameter d is drawn many times too large.

    Die Trennscheibe 1 weist in den seitlichen Stirnflächen Vertiefungen 3 auf, die sich über einen Durchmesserbereich des Durchmessers d von 45 % bis 80 % erstrecken. In die Vertiefungen 3 sind die Stahlbleche oder Stahlgitter 2 im wesentlichen bündig eingesetzt.The cutting disk 1 has recesses 3 in the lateral end faces, which are extend over a diameter range of diameter d from 45% to 80%. In the recesses 3, the steel sheets or steel mesh 2 are substantially flush used.

    Die Stahlbleche oder Stahlgitter 2 weisen eine Mindeststärke von 0,5 mm auf und können bis zu 3,0 mm stark sein, wobei übliche Werte eher zwischen 1,0 mm und 2,0 mm liegen. Die Stahlbleche bilden eine geschlossene Fläche, wogegen unter Stahlgitter Strukturen verstanden werden, die Ausnehmungen, insbesondere rechteckförmige Ausnehmungen aufweisen. Die Stahlbleche oder Stahlgitter 2 sind mit der übrigen Trennscheibe 1 verklebt.The steel sheets or steel mesh 2 have a minimum thickness of 0.5 mm and can be up to 3.0 mm thick, with common values being more likely between 1.0 mm and 2.0 mm lie. The steel sheets form a closed surface, whereas under Steel mesh structures are understood, the recesses, in particular have rectangular recesses. The steel sheets or steel mesh 2 are with glued the remaining blade 1.

    Die Stahlbleche 2 sind beim gezeigten Ausführungsbeispiel rund, wie aus Fig. 3 ersichtlich. Auch wenn die runde Form für ruhige Rundlaufeigenschaften günstig ist, sind auch beliebige andere Formen, insbesondere Polygonformen, vorstellbar.The steel sheets 2 are round in the embodiment shown, as shown in FIG. 3rd seen. Even if the round shape is favorable for quiet concentricity, are also any other shapes, especially polygons, conceivable.

    In Fig. 1 sind die beiden zusammenwirkenden Spannflansche 5a und 5b gezeigt, mit denen die Kraftübertragung auf die Trennscheibe 1 erfolgt. Die Stahlbleche oder Stahlgitter 2 führen dazu, daß die Krafteinleitung nicht nur auf den Bereich der Spannflansche 5a und 5b beschränkt bleibt, sondern sich im wesentlichen auf die gesamte Fläche erstreckt, die die Stahlbleche oder Stahlgitter 2 abdecken. Die Stabilisierung der Trennscheibe 1 reicht somit radial weit nach außen.In Fig. 1, the two cooperating clamping flanges 5a and 5b are shown, with where the power is transmitted to the cutting wheel 1. The steel sheets or Steel grille 2 cause the introduction of force not only to the area of Clamping flanges 5a and 5b remains limited, but essentially to the extends the entire surface covering the steel sheets or steel mesh 2. The Stabilization of the cutting wheel 1 thus extends radially far outward.

    In Fig. 2 ist zu erkennen, daß die Trennscheibe 1 eine Gewebeeinlage 6 aufweist. Es handelt sich dabei um ein harzimprägniertes Glasfasergewebe. Die Gewebeeinlage 6 stabilisiert die Trennscheibe 1 und verhindert die Entstehung vagabundierender Scheibenbruchstücke bei einem Versagen der Scheibe. Die vorliegende Erfindung erlaubt es, mit nur einer oder zumindest wenigen Gewebeeinlagen 6 auszukommen. Vorstellbar ist auch eine Ausführungsvariante ohne Gewebeeinlage. Dies ist insofern vorteilhaft, als bei Reduktion der Gewebeschichten das Volumen des Gewebes durch Schleifkorn ersetzt werden kann, wodurch die Schleifeigenschaften verbessert werden.In Fig. 2 it can be seen that the cutting disc 1 has a fabric insert 6. It is a resin-impregnated glass fiber fabric. The fabric insert 6 stabilizes the blade 1 and prevents the formation of stray Slice fragments in case of failure of the disc. The present invention allows to get along with only one or at least a few fabric inserts 6. Also conceivable is a variant without tissue insert. This is insofar advantageous, as in reduction of the tissue layers, the volume of the tissue through Abrasive grain can be replaced, whereby the grinding properties are improved.

    Die Herstellung der erfindungsgemäßen Trennscheiben verläuft derart, daß aus Schleifkorn, Kunstharz und Füllstoffen eine Mischung hergestellt wird. Auf eine runde Preßplatte wird zuerst ein Stahlblech oder Stahlgitter 2 aufgelegt und anschließend die Mischung aus Schleifkorn, Kunstharz und Füllstoffen aufgebracht. In diese Mischung werden die Gewebeeinlagen 6 eingelegt. Anschließend wird verdichtet, wobei an der Oberfläche eine Vertiefung 3 eingeformt wird. In diese Vertiefung 3 wird das zweite Stahlblech oder Stahlgitter 2 eingelegt, wonach ein nochmaliges Verpressen erfolgt. Die Stahlbleche oder Stahlgitter 2 werden vor der Verarbeitung auf der der Trennscheibe 1 zugewandten Seite mit einem Epoxikleber versehen.The preparation of the cutting discs according to the invention is such that from Abrasive grain, synthetic resin and fillers a mixture is made. On a round Press plate is first placed a steel or steel mesh 2 and then the Mixture of abrasive grain, synthetic resin and fillers applied. In this mixture the fabric inserts 6 are inserted. Then it is compressed, taking at the Surface is formed a recess 3. In this recess 3, the second Steel plate or steel grille 2 inserted, after which a further pressing takes place. The steel sheets or steel mesh 2 are applied to the before processing Cutting disc 1 facing side provided with an epoxy adhesive.

    Das gepreßte Sandwich wird anschließend zwischen Richtplatten eingespannt und im Ofen bei einer geeigneten Temperatur ausgehärtet.The pressed sandwich is then clamped between straightening plates and in Oven cured at a suitable temperature.

    Claims (11)

    1. Cut-off wheel (1) with an outer edge and a central bore and with a diameter above 500 mm, which can be clamped between clamping flanges (5a, 5b), with a mixture of abrasive grain, binder and optionally fillers, which extends from the outer edge of the cut-off wheel (1) up to the central bore (4), the cut-off wheel (1) being provided laterally with steel sheets or steel grids (2), characterized in that the steel sheets or steel grids (2) are housed flush in recesses (3) in the side surfaces of the cut-off wheel (1) and have a minimum thickness of 0.5 mm and a radial extension exceeding the radial extension of the clamping flange (5a, 5b).
    2. Cut-off wheel according to claim 1, characterized in that the thickness of the steel sheets or steel grids (2) is between 0.5 mm and 3.0 mm, preferably between 1.0 mm and 2.0 mm.
    3. Cut-off wheel according to claim 1 or 2, characterized in that the steel sheets or steel grids (2) are glued to the cut-off wheel (1).
    4. Cut-off wheel according to one of claims 1 to 3, characterized in that the steel sheets or steel grids (2) have an essentially round shape.
    5. Cut-off wheel according to one of claims 1 to 4, characterized in that the radial extension of the steel sheets or steel grids (2) extends from the central bore (4) to at most 80% of the diameter (d) of the cut-off wheel (1).
    6. Cut-off wheel according to one of claims 1 to 5, characterized in that the proportionality of the diameter (d) of the cut-off wheel (1) to the width (b) of the cut-off wheel (1) lies above 80.
    7. Cut-off wheel according to one of claims 1 to 6, characterized in that the cut-off wheel (1) contains synthetic resin as binder.
    8. Cut-off wheel according to one of claims 1 to 7, characterized in that the cut-off wheel (1) contains at least one woven fabric insert.
    9. Process for the production of a cut-off wheel with a diameter above 500 mm according to one of claims 1 to 8, characterized in that firstly a steel sheet or steel grid (2) with a minimum thickness of 0.5 mm and with an extension exceeding the radial extension of a clamping flange (5a, 5b) is laid on a pressing plate, the mixture of abrasive grain, binder and optionally fillers is then applied and finally compacted, so that the steel sheet or steel grid (2) is inserted flush into a side surface.
    10. Process according to claim 1, characterized in that, upon compaction, a recess (3) is formed into which the second steel sheet or steel grid (2) is pressed.
    11. Process according to claim 9 or 10, characterized in that the steel sheets or steel grids (2) are provided with an adhesive, in particular epoxide adhesive, before being pressed on the side of the cut-off wheel (1) facing the mixture of abrasive grain, binder and optionally fillers.
    EP02001641A 2002-01-24 2002-01-24 Cut-off wheel with lateral steel plates Expired - Lifetime EP1332834B1 (en)

    Priority Applications (13)

    Application Number Priority Date Filing Date Title
    ES02001641T ES2208616T3 (en) 2002-01-24 2002-01-24 ABRASION CUTTING DISK WITH SIDE STEEL SHEETS.
    SI200230006T SI1332834T1 (en) 2002-01-24 2002-01-24 Cut-off wheel with lateral steel plates
    DE20220787U DE20220787U1 (en) 2002-01-24 2002-01-24 cutting wheel
    EP02001641A EP1332834B1 (en) 2002-01-24 2002-01-24 Cut-off wheel with lateral steel plates
    AT02001641T ATE253433T1 (en) 2002-01-24 2002-01-24 CUT-OFF GRINDING DISC WITH SIDE STEEL SHEETS
    DE20220516U DE20220516U1 (en) 2002-01-24 2002-01-24 Grinding disc for cutting, includes steel side sheets recessed flush into disc and extending radially beyond clamping flanges
    DE50200094T DE50200094D1 (en) 2002-01-24 2002-01-24 Cutting disc with steel sheets on the side
    PL362770A PL205513B1 (en) 2002-01-24 2003-01-23 Abrasive cutting disk with lateral steel sheets
    BRPI0302833-0A BR0302833B1 (en) 2002-01-24 2003-01-23 cutting disc with side steel plates
    PCT/AT2003/000022 WO2003061910A1 (en) 2002-01-24 2003-01-23 Abrasive cutting disk with lateral steel sheets
    CNB038000865A CN100391695C (en) 2002-01-24 2003-01-23 Abrasive cutting disk with lateral steel sheets
    US10/472,572 US7115029B2 (en) 2002-01-24 2003-01-23 Abrasive cutting disk with lateral steel sheets
    CZ20032522A CZ297689B6 (en) 2002-01-24 2003-01-23 Grinding wheel with side steel sheets

    Applications Claiming Priority (1)

    Application Number Priority Date Filing Date Title
    EP02001641A EP1332834B1 (en) 2002-01-24 2002-01-24 Cut-off wheel with lateral steel plates

    Publications (2)

    Publication Number Publication Date
    EP1332834A1 EP1332834A1 (en) 2003-08-06
    EP1332834B1 true EP1332834B1 (en) 2003-11-05

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    ID=8185337

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP02001641A Expired - Lifetime EP1332834B1 (en) 2002-01-24 2002-01-24 Cut-off wheel with lateral steel plates

    Country Status (11)

    Country Link
    US (1) US7115029B2 (en)
    EP (1) EP1332834B1 (en)
    CN (1) CN100391695C (en)
    AT (1) ATE253433T1 (en)
    BR (1) BR0302833B1 (en)
    CZ (1) CZ297689B6 (en)
    DE (2) DE50200094D1 (en)
    ES (1) ES2208616T3 (en)
    PL (1) PL205513B1 (en)
    SI (1) SI1332834T1 (en)
    WO (1) WO2003061910A1 (en)

    Families Citing this family (14)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE102004032311A1 (en) * 2004-07-03 2006-01-19 August Rüggeberg Gmbh & Co. Kg Separating grinding wheel for stationary use
    AT502285B1 (en) 2004-10-19 2008-12-15 Gissing Gerhard CIRCUIT RING WITH DOUBLE BOLTING DEVICE
    EP2177318B1 (en) * 2009-04-30 2014-03-26 Saint-Gobain Abrasives, Inc. Abrasive article with improved grain retention and performance
    JP2011079113A (en) * 2009-10-09 2011-04-21 Tenryu Saw Mfg Co Ltd Device for mounting disc-shaped rotary tool
    AT509371B1 (en) 2010-01-20 2013-01-15 Rappold Winterthur Technologie Gmbh COMPOSITE GRINDING SYSTEM
    AT509372B1 (en) 2010-02-10 2013-01-15 Rappold Winterthur Technologie Gmbh COMPOSITE GRINDING SYSTEM
    AT511244B1 (en) 2011-03-30 2013-01-15 Swarovski Tyrolit Schleif CUTTING WHEEL
    RU2015108681A (en) * 2012-08-28 2016-09-27 Сен-Гобен Абразивс, Инк. LARGE DIAMETER CUTTING TOOL
    US20150105006A1 (en) * 2013-10-11 2015-04-16 HGST Netherlands B.V. Method to sustain minimum required aspect ratios of diamond grinding blades throughout service lifetime
    JP5893669B2 (en) * 2014-04-30 2016-03-23 富士製砥株式会社 Rotating whetstone manufacturing method and rotating whetstone manufactured by the manufacturing method
    CN105313006A (en) * 2014-08-02 2016-02-10 宁波市弘美机械有限公司 Planet wheel polishing machine
    AT518913B1 (en) * 2016-08-04 2019-04-15 Tyrolit Schleifmittelwerke Swarovski Kg cutting wheel
    EP3421178A1 (en) * 2017-06-26 2019-01-02 Dronco GmbH Method of manufacturing an abrasive member, in particular rotary abrasive disc and abrasive member, in particular rotary abrasive disc
    DE102019127702A1 (en) * 2019-10-15 2021-04-15 Battenfeld-Cincinnati Germany Gmbh Cutting knife

    Citations (2)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US1600064A (en) * 1925-12-08 1926-09-14 George W Perks Company Mounting for abrasive wheels
    US3898773A (en) * 1973-08-28 1975-08-12 Swarovski Tyrolit Schleif Grinding disk

    Family Cites Families (14)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US1756259A (en) * 1926-11-22 1930-04-29 George W Perks Company Mounting for abrasive wheels or the like
    US2033263A (en) * 1927-12-07 1936-03-10 Carborundum Co Abrasive article
    US2004630A (en) * 1932-12-06 1935-06-11 Krug Carl Grinding disk
    US2259554A (en) * 1940-12-30 1941-10-21 Safety Grinding Wheel & Machin Abrasive wheel
    US3526063A (en) * 1965-03-08 1970-09-01 Norton Co Integral mounting means and reinforcement for grinding wheels
    US3528203A (en) * 1968-05-02 1970-09-15 Bendix Corp Grinding wheel
    US3838543A (en) * 1970-05-25 1974-10-01 Norton Co High speed cut-off wheel
    US3867795A (en) * 1973-10-16 1975-02-25 Norton Co Composite resinoid bonded abrasive wheels
    JPS5949867B2 (en) * 1980-11-17 1984-12-05 仁郎 井上 Diamond blade for cutting stone etc.
    BE903178A (en) * 1985-09-04 1985-12-31 Diamant Boart Sa DIAMOND SEGMENT SAWING DISC
    JP2519166B2 (en) * 1993-04-26 1996-07-31 ジャンプ工業株式会社 Substrate for cutter
    CN2314892Y (en) * 1997-11-03 1999-04-21 李广棋 Super thin abrasive wheel sheet for cutting
    IT1306051B1 (en) 1998-05-26 2001-05-29 Vittorio Pareti ANTI-VIBRATION SHEET FOR CUTTING DISCS
    TW550141B (en) * 1999-07-29 2003-09-01 Saint Gobain Abrasives Inc Depressed center abrasive wheel assembly and abrasive wheel assembly

    Patent Citations (2)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US1600064A (en) * 1925-12-08 1926-09-14 George W Perks Company Mounting for abrasive wheels
    US3898773A (en) * 1973-08-28 1975-08-12 Swarovski Tyrolit Schleif Grinding disk

    Also Published As

    Publication number Publication date
    BR0302833B1 (en) 2012-03-20
    WO2003061910A1 (en) 2003-07-31
    CN100391695C (en) 2008-06-04
    BR0302833A (en) 2004-03-02
    ES2208616T3 (en) 2004-06-16
    DE20220787U1 (en) 2004-03-11
    US7115029B2 (en) 2006-10-03
    CZ297689B6 (en) 2007-03-07
    CZ20032522A3 (en) 2003-12-17
    US20050107020A1 (en) 2005-05-19
    SI1332834T1 (en) 2004-02-29
    CN1498151A (en) 2004-05-19
    PL362770A1 (en) 2004-11-02
    DE50200094D1 (en) 2003-12-11
    ATE253433T1 (en) 2003-11-15
    EP1332834A1 (en) 2003-08-06
    PL205513B1 (en) 2010-04-30

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