EP0147633B1 - Method of manufacturing elastic grinding bodies - Google Patents

Method of manufacturing elastic grinding bodies Download PDF

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Publication number
EP0147633B1
EP0147633B1 EP84114193A EP84114193A EP0147633B1 EP 0147633 B1 EP0147633 B1 EP 0147633B1 EP 84114193 A EP84114193 A EP 84114193A EP 84114193 A EP84114193 A EP 84114193A EP 0147633 B1 EP0147633 B1 EP 0147633B1
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EP
European Patent Office
Prior art keywords
grinding
abrasive grain
base body
grinding bodies
recesses
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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
Application number
EP84114193A
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German (de)
French (fr)
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EP0147633A2 (en
EP0147633A3 (en
Inventor
Anne-Marie Elbel-Raberain
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DR. ELBEL SCHLEIFMITTEL GMBH
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Dr Elbel Schleifmittel GmbH
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Priority to AT84114193T priority Critical patent/ATE33107T1/en
Publication of EP0147633A2 publication Critical patent/EP0147633A2/en
Publication of EP0147633A3 publication Critical patent/EP0147633A3/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D18/00—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D11/00—Constructional features of flexible abrasive materials; Special features in the manufacture of such materials
    • B24D11/001—Manufacture of flexible abrasive materials
    • B24D11/005—Making abrasive webs

Definitions

  • the invention relates to a method for producing elastic grinding bodies for shape-following grinding, using a negative mold. which contain abrasive grain islands in their surface area, which are anchored in an elastomeric body.
  • Such grinding wheels are known from DE-OS 3 219 567.
  • binders are available for combination for the elastomeric base body and the abrasive grain islands, since “wet-on-wet” has to be used.
  • these mutually compatible binders must be coordinated with one another with regard to their pot and curing times and temperatures.
  • the grinding wheels produced with them represent only compromises that are difficult to optimize in terms of grinding performance.
  • the abrasive bodies produced by the previously known method have abrasive grain islands which are separated from one another by grooves. In grinding machines with a relatively low coolant supply, this can lead to the coolant "seeping away" in the grooves and thus not being able to fulfill its purpose, so that the grinding islands grind almost dry and soon become clogged.
  • this object is achieved by first producing the elastomeric base body with depressions in its surface by means of the negative shape, and then pouring out these depressions with an abrasive grain / binder mixture, so that the abrasive body is given a closed surface.
  • the abrasive body shown in section in FIGS. 1 and 2 consists of hard abrasive grain 11, which are embedded in an elastomer 12 and, if appropriate, a further layer 13 of fabric, in particular textile fiber fabric.
  • All known hard materials such as corundum, silicon carbide and other carbides, garnet, emery, glass powder, etc. can be used as the abrasive grain for the abrasive grain islands 11
  • Grinding aids such as pyrite, hollow corundum, marble powder, cryolite etc.
  • Suitable binders for these abrasive grain islands 11 are primarily liquid systems which can be poured in a mixture with the abrasive grain and possibly grinding aids, possibly under the action of vibration and / or heat, for example unsaturated polyester resins, epoxy resins, acrylic resins and their monomers Diisocyanate-hardened phenol novolaks, acid-hardening phenol resoles and many more
  • the thickness of the elastomer layer 12 is at least 5 mm, usually 15 to 30 mm, in each case the thickness of the grinding grain islands 11 is subtracted.
  • the thickness of the abrasive grain islands 11 is preferably 8 to 15 mm.
  • all elastomers can be used for the elastomeric base body 12, but primarily elastomeric foams which, for a short time, e.g. B. withstand a temperature of 130 ° for 30 min in order to harden the subsequently introduced abrasive grain binder composition.
  • Particularly suitable here are thermosetting polyurethane foams, elastomeric foams based on depolymerized butyl rubber or other liquid rubbers.
  • the elastomeric base body 12 is advantageously foamed directly onto a core 14 during its production and is thereby firmly connected to it. Practically all dimensionally stable materials can be used as materials for such cores. Aluminum is recommended if the core is to be reused. Cores 14 based on various plastics, for example hard polyurethane, epoxy or phenolic resins, are also recommended.
  • a first negative mold is made, Fig. 8, that of steel, aluminum. Wood, polyethylene or the like can exist. It corresponds to the flat development of the grinding wheel, the areas 24 projecting 10 to 17 mm from the base 22. If necessary, the shape another edge 23, which is at the same level as the bottom 22.
  • a positive mold is produced by casting. All relevant casting compounds are suitable as materials here. e.g. B. gypsum, liquid rubbers, polymer concrete, epoxy or unsaturated polyester resins.
  • a second negative mold is now cast from this positive mold, which consists primarily of silicone rubber. Other elastomers with their own release effect are also conceivable.
  • the second negative form is now inserted into a round form in such a way that the surface shown in FIG. 8 points inwards.
  • the core 14 can be inserted centrally in this form.
  • the elastomer is then poured into the space between the core 14 and the second negative mold on the outside and is cured or vulcanized, primarily with foaming.
  • a base body (second positive shape) is thus obtained, which consists of the core 14 and the elastomer layer 12, the latter having many pockets (corresponding to the areas 24 of the negative shape) according to FIGS. 3 to 6 or similar on its outside or outer surface.
  • an edge made of elastomer remains, about 5 to 10 mm wide, predetermined by the edge 23 (FIG. 8).
  • Such base bodies can be made in stock and later filled with an abrasive grain / binder mixture.
  • the base body consisting of 12 and 14, is placed on a shaft 15.
  • a band 17 is guided over the deflection roller 19 in the direction of rotation around the base body and finally attached to the roller 18 via a further deflection roller.
  • the band 17 can consist of film, siliconized paper or the like. The band must be guided tightly so that it is tight and tight over its full width. This can be achieved, for example, by braking the roller 16 while the roller 18 is driven.
  • the base body (12 + 14) sits on a funnel 20, which is optionally provided with a vibrator 21.
  • the still flowable abrasive grain binder mass is now placed in this funnel 20. Since the vibration of the funnel in the casting area is also transmitted to the base body, it is ensured that the depressions in the base body are filled without air pockets.
  • the depressions (pockets) in the base body are then gradually filled with the abrasive grain / binder mixture, while the belt 17 prevents this mass from subsequently flowing out again.
  • the funnel 20 is removed, the belt 17 is cut off on both sides and the two ends are connected to one another in such a way that the entire circumference of the grinding wheel now in place is tightly surrounded. Subsequently, the binder of the abrasive grain islands 11 is hardened and the grinding wheel is overturned for a perfect concentricity.
  • a structure of the grinding wheel surface is created as in FIG. 3.
  • the grinding wheel according to the invention and a method for its production have been described above using the exemplary embodiment of a wheel-shaped grinding wheel, but it is also possible, analogously, to produce grinding wheels in a different form, for example in the form of disks or plates.

Abstract

1. Method of manufacturing resilient grinding bodies for grinding subsequent to moulding, utilising a negative mould, which grinding bodies, in their surface region, contain abrasive grain clusters which are anchored in an elastomeric base body, characterised in that the elastomeric base body (12) is initially manufactured with recesses in its surface by means of the negative mould, and then these recesses are filled with a mixture of abrasive grain and binding agents which, in their hardened state, form the abrasive grain clusters (11), so that the grinding body is provided with a continuous surface.

Description

Die Erfindung betrifft ein Verfahren zur Herstellung von elastischen Schleifkörpern für das formfolgende Schleifen, unter Verwendung einer Negativform. die in ihrem Oberflächenbereich Schleifkorninseln enthalten, die in einem elastomeren Grundkörper verankert sind.The invention relates to a method for producing elastic grinding bodies for shape-following grinding, using a negative mold. which contain abrasive grain islands in their surface area, which are anchored in an elastomeric body.

Derartige Schleifkörper sind aus der DE-OS 3 219 567 bekannt. Bei dem dort beschriebenen Herstellungsverfahren sind jedoch hinsichtlich der Materialauswahl einige Einschränkungen dadurch gegeben, daß nur wenige Bindemittel zur Kombination für den elastomeren Grundkörper und die Schleifkorninseln zur Verfügung stehen, da « Naß in Naß gearbeitet werden muß. Außerdem müssen diese miteinander verträglichen Bindemittel hinsichtlich ihrer Topf- und Härtungszeiten und- Temperaturen aufeinander abgestimmt werden. Infolge dieser zwangsläufigen Kompromisse bei der Materialwahl stellen auch die damit hergestellten Schleifkörper nur Kompromisse dar, die sich hinsichtlich der Schleifleistung nur schwer optimieren lassen.Such grinding wheels are known from DE-OS 3 219 567. In the manufacturing process described there, however, there are some restrictions with regard to the choice of material in that only a few binders are available for combination for the elastomeric base body and the abrasive grain islands, since “wet-on-wet” has to be used. In addition, these mutually compatible binders must be coordinated with one another with regard to their pot and curing times and temperatures. As a result of these inevitable compromises in the choice of material, the grinding wheels produced with them represent only compromises that are difficult to optimize in terms of grinding performance.

Außerdem weisen die durch das vorbekannte Verfahren hergestellten Schleifkörper Schleifkorninseln auf, die durch Nuten voneinander getrennt sind. Bei Schleifmaschinen mit relativ geringer Kühlmittelzufuhr kann dies dazu führen, daß das Kühlmittel in den Nuten « versickert » und somit seinen Zweck nicht erfüllen kann, so daß die Schleifinseln nahezu trocken schleifen und sich bald zusetzen.In addition, the abrasive bodies produced by the previously known method have abrasive grain islands which are separated from one another by grooves. In grinding machines with a relatively low coolant supply, this can lead to the coolant "seeping away" in the grooves and thus not being able to fulfill its purpose, so that the grinding islands grind almost dry and soon become clogged.

Es ist daher Aufgabe der Erfindung, eine Vereinfachung und Verbesserung des vorbekannten Herstellungsverfahrens zu erzielen, wobei größere Freiheit bei der Auswahl der Komponenten und damit auch ein größeres optimales Anwendungsspektrum der hergestellten Schleifkörper erreicht werden sollen.It is therefore an object of the invention to achieve a simplification and improvement of the previously known manufacturing process, with greater freedom in the selection of the components and thus also a greater optimal range of applications for the grinding wheels produced.

Erfindungsgemäss wird diese Aufgabe dadurch gelöst, daß zuerst mittels der Negativform der elastomere Grundkörper mit Vertiefungen in seiner Oberfläche hergestellt wird, und dann diese Vertiefungen mit einer Schleifkorn-Bindemittel-Mischung ausgegossen werden, so daß der Schleifkörper eine geschlossene Oberfläche erhält.According to the invention, this object is achieved by first producing the elastomeric base body with depressions in its surface by means of the negative shape, and then pouring out these depressions with an abrasive grain / binder mixture, so that the abrasive body is given a closed surface.

Ein Ausführungsbeispiel des erfindungsgemäßen Schleifkörpers in Radform und dessen Herstellungsverfahren werden nun anhand von Zeichnungen näher erläutert, es zeigen :

  • Figur 1 : Einen Querschnitt durch den erfindungsgemäßen Schleifkörper in der Ebene A-B der Figur 2.
  • Figur 2: einen Querschnitt durch die eine Hälfte des elastischen Schleifkörpers senkrecht zur Ebene A-B.
  • Figur 3-6 : einen Ausschnitt aus Oberflächenansichten gemäß den Figuren 1 und 2 mit verschiedener Gestaltung der schleifaktiven Oberfläche,
  • Figur 7 : eine skizzenhafte Darstellung einer Vorrichtung zur Herstellung der schleifaktiven Oberfläche und
  • Figur 8 : eine Form zur Herstellung der Oberfläche des elastomeren Grundkörpers.
An embodiment of the wheel-shaped grinding wheel according to the invention and its production method are now explained in more detail with reference to drawings, in which:
  • 1 shows a cross section through the grinding wheel according to the invention in the plane AB of FIG. 2nd
  • Figure 2 shows a cross section through one half of the elastic grinding body perpendicular to the plane AB.
  • FIGS. 3-6: a section of surface views according to FIGS. 1 and 2 with different designs of the grinding-active surface,
  • Figure 7: a sketchy representation of a device for producing the grinding active surface and
  • Figure 8: a mold for producing the surface of the elastomeric body.

Der in Figuren 1 und 2 im Schnitt dargestellte Schleifkörper besteht aus harten Schleifkorninsein 11, die in einem Elastomer 12 eingebettet sind und ggf. aus einer weiteren Schicht 13 aus Gewebe,, insbesondere textilem Fasergewebe.The abrasive body shown in section in FIGS. 1 and 2 consists of hard abrasive grain 11, which are embedded in an elastomer 12 and, if appropriate, a further layer 13 of fabric, in particular textile fiber fabric.

Als Schleifkörnung fur die Schleifkorninseln 11 können alle bekannten Hartstoffe verwendet werden, wie beispielsweise Korunde, Siliziumcarbid und andere Karbide, Granat, Schmirgel, Glasmehl usw. Um die Schleifwirkung zu unterstützen und um ein ausreichendes Spanlückenvolumen in der schleifaktiven Oberfläche zu erzielen, empfiehlt sich außerdem der Einbau von Schleifhilsmitteln, wie beispielsweise Pyrit, Hohlkugelkorund, Marmormehl, Kryolith usw.All known hard materials, such as corundum, silicon carbide and other carbides, garnet, emery, glass powder, etc. can be used as the abrasive grain for the abrasive grain islands 11 Installation of grinding aids such as pyrite, hollow corundum, marble powder, cryolite etc.

Als Bindemittel für diese Schleifkorninseln 11 kommen vornehmlich flüssige Systeme in Frage, die in Mischung mit dem Schleifkorn und ggf. Schleifhilfsmittel, ggf. unter Einwirkung von Vibration und/oder Wärme, gießbar sind, beispielsweise ungesättigte Polyesterharze, Epoxidharze, Acrylharze und deren Monomere, mit Diisocyanaten gehärtete Phenolnovolake, säurehärtende Phenolresole u.v.a.Suitable binders for these abrasive grain islands 11 are primarily liquid systems which can be poured in a mixture with the abrasive grain and possibly grinding aids, possibly under the action of vibration and / or heat, for example unsaturated polyester resins, epoxy resins, acrylic resins and their monomers Diisocyanate-hardened phenol novolaks, acid-hardening phenol resoles and many more

Um dem erfindungsgemäßen Schleifkörper eine ausreichende Hintergrundelastizität zu geben, beträgt die Dicke der Elastomerschicht 12 mindestens 5 mm, meist 15 bis 30 mm, jeweils die Dicke der Schleifkorninseln 11 abgezogen. Die Dicke der Schleifkorninseln 11 beträgt vorzugsweise 8 bis 15 mm.In order to give the grinding body according to the invention sufficient background elasticity, the thickness of the elastomer layer 12 is at least 5 mm, usually 15 to 30 mm, in each case the thickness of the grinding grain islands 11 is subtracted. The thickness of the abrasive grain islands 11 is preferably 8 to 15 mm.

Für den elastomeren Grundkörper 12 lassen sich prinzipiell alle Elastomeren einsetzen, vornehmlich jedoch elastomere Schäume, die kurzzeitig, z. B. über 30 min eine Temperatur von 130° aushalten, um die nachträglich eingebrachte Schleifkorn-Bindemittel-Masse auszuhärten. Infrage kommen hier besonders warmhärtende Polyurethanschäume, Elastomerschaum auf Basis depolymerisierten Butylkautschuks oder anderer Flüssigkautschuke.In principle, all elastomers can be used for the elastomeric base body 12, but primarily elastomeric foams which, for a short time, e.g. B. withstand a temperature of 130 ° for 30 min in order to harden the subsequently introduced abrasive grain binder composition. Particularly suitable here are thermosetting polyurethane foams, elastomeric foams based on depolymerized butyl rubber or other liquid rubbers.

Der elastomere Grundkörper 12 wird vorteilhaft bei seiner Herstellung direkt auf einen Kern 14 aufgeschäumt und dadurch fest mit diesem verbunden. Als Materialien für solche Kerne kommen praktisch alle formstabilen Stoffe in Frage. Aluminium empfiehlt sich, wenn der Kern wiederverwendet werden soll. Ferner empfehlen sich Kerne 14 auf Basis verschiedener Kunststoffe, beispielsweise Hartpolyurethan, Epoxid- oder Phenolharzen.The elastomeric base body 12 is advantageously foamed directly onto a core 14 during its production and is thereby firmly connected to it. Practically all dimensionally stable materials can be used as materials for such cores. Aluminum is recommended if the core is to be reused. Cores 14 based on various plastics, for example hard polyurethane, epoxy or phenolic resins, are also recommended.

Im folgenden soll nun das erfindungsgemäße Verfahren zur Herstellung eines Schleifkörpers erläutert werden :The method according to the invention for producing an abrasive body will now be explained below:

Zunächst wird eine erste Negativform hergestellt, Fig. 8, die aus Stahl, Aluminium. Holz, Polyäthylen o. a. bestehen kann. Sie entspricht der ebenen Abwicklung des Schleifkörpers, wobei die Bereiche 24 10 bis 17 mm gegenüber dem Grund 22 vorstehen. Gegebenenfalls hat die Form noch einen Rand 23, der auf dem gleichen Niveau liegt wie der Grund 22.First, a first negative mold is made, Fig. 8, that of steel, aluminum. Wood, polyethylene or the like can exist. It corresponds to the flat development of the grinding wheel, the areas 24 projecting 10 to 17 mm from the base 22. If necessary, the shape another edge 23, which is at the same level as the bottom 22.

Von dieser ersten Negativform wird durch Abguß eine Positivform hergestellt. Als Materialien kommen hier alle entsprechenden Abgußmassen infrage. z. B. Gips, Flüssigkautschuke, Polymerbeton, Epoxid- oder ungesättigte Polyesterharze.From this first negative mold, a positive mold is produced by casting. All relevant casting compounds are suitable as materials here. e.g. B. gypsum, liquid rubbers, polymer concrete, epoxy or unsaturated polyester resins.

Von dieser Positivform wird nun eine zweite Negativform abgegossen, die vornehmlich aus Silikonkautschuk besteht. Denkbar sind auch andere Elastomere, die eine eigene Trennwirkung besitzen. Die zweite Negativform wird nun in eine runde Form eingelegt dergestalt, daß die in Fig. 8 dargestellte Oberfläche nach innen zeigt. Ferner kann in diese Form der Kern 14 zentrisch eingelegt werden. In den Zwischenraum zwischen Kern 14 und der außen liegenden zweiten Negativform wird nun das Elastomer gegossen und, vornehmlich unter Schäumung ausgehärtet bzw. vulkanisiert. Man erhält so einen Grundkörper (zweite Positivform), der aus dem Kern 14 und der Elastomerschicht 12 besteht, wobei letztere auf ihrer Außenseite bzw. Außenfläche viele « Taschen (entsprechend den Bereichen 24 der Negativform) gemäß den Figuren 3 bis 6 oder ähnlich aufweist. Ferner bleibt ein Rand aus Elastomer stehen, ca. 5 bis 10 mm breit, vorgegeben durch den Rand 23 (Figur 8).A second negative mold is now cast from this positive mold, which consists primarily of silicone rubber. Other elastomers with their own release effect are also conceivable. The second negative form is now inserted into a round form in such a way that the surface shown in FIG. 8 points inwards. Furthermore, the core 14 can be inserted centrally in this form. The elastomer is then poured into the space between the core 14 and the second negative mold on the outside and is cured or vulcanized, primarily with foaming. A base body (second positive shape) is thus obtained, which consists of the core 14 and the elastomer layer 12, the latter having many pockets (corresponding to the areas 24 of the negative shape) according to FIGS. 3 to 6 or similar on its outside or outer surface. Furthermore, an edge made of elastomer remains, about 5 to 10 mm wide, predetermined by the edge 23 (FIG. 8).

Solche Grundkörper können auf Vorrat hergestellt und später mit Schleifkorn-Bindemittel-Mischung befüllt werden. Hierzu wird der Grundkörper, bestehend aus 12 und 14, auf eine Welle 15 gesteckt. Von einer Rolle 16 wird ein Band 17 über die Umlenkrolle 19 in Drehrichtung um den Grundkörper geführt und über eine weitere Umlenkrolle schließlich an der Rolle 18 befestigt. Das Band 17 kann aus Folie bestehen, aus silikonisiertem Papier o. ä. Das Band muß straff geführt werden, damit es dem Grundkörper straff und auf voller Breite fest anliegt. Dies kann beispielsweise dadurch erreicht werden, daß die Rolle 16 gebremst wird, während die Rolle 18 angetrieben ist.Such base bodies can be made in stock and later filled with an abrasive grain / binder mixture. For this purpose, the base body, consisting of 12 and 14, is placed on a shaft 15. From a roller 16, a band 17 is guided over the deflection roller 19 in the direction of rotation around the base body and finally attached to the roller 18 via a further deflection roller. The band 17 can consist of film, siliconized paper or the like. The band must be guided tightly so that it is tight and tight over its full width. This can be achieved, for example, by braking the roller 16 while the roller 18 is driven.

In dem kleinen Zwischenraum zwischen den Umlenkrollen 19 sitzt dem Grundkörper (12 + 14) ein Trichter 20 auf, der ggf. mit einem Vibrator 21 versehen ist. In diesen Trichter 20 wird nun die noch fließfähige Schleifkorn-Bindemittel-Masse gegeben. Da sich die Vibration des Trichters im Gießbereich auch auf den Grundkörper überträgt ist gewährleistet, daß die Vertiefungen im Grundkörper ohne Lufteinschlüsse ausgefüllt werden.In the small space between the deflection rollers 19, the base body (12 + 14) sits on a funnel 20, which is optionally provided with a vibrator 21. The still flowable abrasive grain binder mass is now placed in this funnel 20. Since the vibration of the funnel in the casting area is also transmitted to the base body, it is ensured that the depressions in the base body are filled without air pockets.

Durch die Drehung des Grundkörpers, ggf. über einen Antrieb der Rolle 18, werden nun die Vertiefungen (Taschen) im Grundkörper nach und nach mit der Schleifkorn-Bindemittel-Mischung gefüllt, während das Band 17 verhindert, daß diese Masse nachfolgend wieder herausfließen kann.By rotating the base body, possibly via a drive of the roller 18, the depressions (pockets) in the base body are then gradually filled with the abrasive grain / binder mixture, while the belt 17 prevents this mass from subsequently flowing out again.

Nach Beendigung des Füllvorganges wird der Trichter 20 abgenommen, das Band 17 auf beiden Seiten abgeschnitten und die beiden Enden derart miteinander verbunden, daß der gesamte Umfang des nunmehrigen Schleifkörpers straff umgeben ist. Nachfolgend wird das Bindemittel der Schleifkorninseln 11 ausgehärtet und die Schleifscheibe für einen einwandfreien Rundlauf überdreht. Bei einer Negativform gemäß Figur 8 entsteht folglich eine Struktur der Schleifkörperoberfläche wie in Figur 3.After the filling process has been completed, the funnel 20 is removed, the belt 17 is cut off on both sides and the two ends are connected to one another in such a way that the entire circumference of the grinding wheel now in place is tightly surrounded. Subsequently, the binder of the abrasive grain islands 11 is hardened and the grinding wheel is overturned for a perfect concentricity. In the case of a negative mold according to FIG. 8, a structure of the grinding wheel surface is created as in FIG. 3.

Der erfindungsgemäße Schleifkörper und ein Verfahren zu seiner Herstellung sind oben am Ausführungsbeispiel eines Schleifkörpers in Radform beschrieben worden, es lassen sich jedoch analog auch Schleifkörper in anderer Form herstellen, beispielsweise in Scheiben- oder Tellerform.The grinding wheel according to the invention and a method for its production have been described above using the exemplary embodiment of a wheel-shaped grinding wheel, but it is also possible, analogously, to produce grinding wheels in a different form, for example in the form of disks or plates.

Claims (2)

1. Method of manufacturing resilient grinding bodies for grinding subsequent to moulding, utilising a negative mould, which grinding bodies, in their surface region, contain abrasive grain clusters which are anchored in an elastomeric base body, characterised in that the elastomeric base body (12) is initially manufactured with recesses in its surface by means of the negative mould, and then these recesses are filled with a mixture of abrasive grain and binding agents which, in their hardened state, form the abrasive grain clusters (11), so that the grinding body is provided with a continuous surface.
2. Method of manufacturing grinding bodies in wheel form according to claim 1, characterised in that the mixture of abrasive grain and binding agents is poured from above into the base body (12) which rotates about a horizontal axis, and in that, immediately after the pouring process, the poured-in mixture is kept in the recesses, at least until it hardens, by means of a belt (17) which encircles the periphery of the base body (12).
EP84114193A 1983-12-24 1984-11-23 Method of manufacturing elastic grinding bodies Expired EP0147633B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84114193T ATE33107T1 (en) 1983-12-24 1984-11-23 PROCESS FOR THE MANUFACTURE OF ELASTIC ABRASIVES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3346916 1983-12-24
DE19833346916 DE3346916A1 (en) 1983-12-24 1983-12-24 METHOD FOR PRODUCING ELASTIC GRINDING BODIES

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EP0147633A2 EP0147633A2 (en) 1985-07-10
EP0147633A3 EP0147633A3 (en) 1986-08-27
EP0147633B1 true EP0147633B1 (en) 1988-03-23

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DE2256079C3 (en) * 1972-11-16 1981-10-08 Ted Bildplatten Ag Aeg-Telefunken-Teldec, 6301 Zug Process for the production of a diamond abrasive film

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DE3470009D1 (en) 1988-04-28
EP0147633A2 (en) 1985-07-10
EP0147633A3 (en) 1986-08-27
DE3346916A1 (en) 1985-07-04
ATE33107T1 (en) 1988-04-15

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