EP0605359A1 - Disc-like grinding tool - Google Patents

Disc-like grinding tool Download PDF

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Publication number
EP0605359A1
EP0605359A1 EP93810799A EP93810799A EP0605359A1 EP 0605359 A1 EP0605359 A1 EP 0605359A1 EP 93810799 A EP93810799 A EP 93810799A EP 93810799 A EP93810799 A EP 93810799A EP 0605359 A1 EP0605359 A1 EP 0605359A1
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EP
European Patent Office
Prior art keywords
carrier body
cutting elements
grinding tool
tool according
zones
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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.)
Granted
Application number
EP93810799A
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German (de)
French (fr)
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EP0605359B1 (en
Inventor
Karl Ernst Udert
Johann Dorfmeister
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Hilti AG
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Hilti AG
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Publication of EP0605359A1 publication Critical patent/EP0605359A1/en
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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
    • 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
    • B24D7/18—Wheels of special form

Definitions

  • the invention relates to a grinding tool with a disk-shaped carrier body which is covered with cutting elements on the outer circumference and at least in the adjoining region close to the circumference of at least one side surface.
  • Grinding tools of the type mentioned at the outset are used to cut or grind hard materials, such as concrete or stone.
  • a grinding tool which consists of a disc-shaped carrier body which is coated with diamond grain on its outer circumference and on both side surfaces in strips.
  • the invention has for its object to provide a universal, economically producible grinding tool with a long service life, which is suitable for machining surfaces and can be used as a cutting disc and as a slot milling cutter.
  • the object is achieved in that the thickness of the carrier body decreases towards the outer circumference, the cutting elements are connected to the carrier body by means of solder and at least those in thickness occupy the decreasing area, the cutting elements being arranged at a distance from one another which corresponds to 1 to 10 times a diameter of a cutting element measured parallel to the plane of a side face of the carrier body.
  • a grinding surface is created which runs at a certain inclination with respect to the remaining side surface.
  • This inclined grinding surface enables the grinding tool to be placed at an angle to the surface to be machined during the grinding process. This prevents the tool from migrating during the grinding process.
  • the individual cutting elements are connected by means of a solder, which has the property of connecting the individual cutting elements well to the carrier body.
  • a solder has the advantage that only about 20% to 25% of the cutting element has to be embedded in the solder.
  • the distance between the individual cutting elements is preferably greater than when machining a hard surface, the limits being between 1 and 10 times the diameter of a cutting element.
  • the carrier body of the grinding tool can consist of steel, a metal alloy, ceramic or sintered metal.
  • the thickness of the carrier body expediently decreases symmetrically on both sides.
  • the area of the carrier body which decreases in thickness towards the outer circumference is particularly well suited for surface treatment. Due to the symmetrical design of both side surfaces of the carrier body, both side surfaces can be used for the same surface treatments.
  • At least the area of the carrier body that decreases in thickness advantageously has zones free of cutting elements.
  • Such cutting element-free zones serve for better removal of the abraded material and bring about a significant increase in the mining performance.
  • these cutting element-free zones allow the coolant to be distributed in the area of the side surfaces.
  • the zones free of cutting elements can partially extend from the center to the outer circumference of the carrier body. Through these zones free of cutting elements, the surfaces of the carrier body covered with cutting elements are subdivided into several smaller surfaces, which likewise extend at least partially from the center to the outer circumference of the grinding tool.
  • the zones free of cutting elements can have different widths.
  • the shape of these zones free of cutting elements can also be different. For example, they can be essentially radial, essentially swirl-shaped and essentially spiral-shaped, the swirl direction of the swirl and the spiral running in the opposite direction to the actual direction of rotation of the grinding tool. Such a twisting direction of the zone free of cutting elements causes a good removal of abraded material to be removed.
  • the zones of the carrier body free of cutting material are preferably formed as depressions in the carrier body.
  • the depressions enable coolant to be transported from the center to the outer periphery of the carrier body.
  • the depressions extend at least partially from the center to the outer circumference of the carrier body and cause the large side surface of the carrier body to be divided into a plurality of smaller surfaces, which at least partly also extend from the center to the outer circumference of the grinding tool.
  • These recesses can be of different widths, so that their width increases from the center to the outer circumference of the grinding tool. In this way, depressions with a circular cutout shape are formed.
  • Spiral recesses whose direction of twist is opposite to the actual direction of rotation of the grinding tool, form good discharge channels for the removed material.
  • Such depressions are particularly suitable in wet machining for the distribution of coolant, which is supplied to the grinding tool during the machining process, for example, through the drive spindle of an implement. Coolant thus gets from the center to the side surfaces of the grinding tool.
  • the carrier body is expediently recessed in the spacing zones lying between the cutting elements.
  • the carrier body has the before Cutting elements in the area in which cutting elements are applied have a nub-like surface.
  • the individual cutting elements of a grinding tool designed in this way are arranged on small, cylindrical or frustoconical knobs by means of a solder.
  • the diameter of the contact surface of these knobs, on which the individual cutting elements rest, is designed to be slightly larger than the largest diameter of the individual cutting elements.
  • a distribution of coolant is possible in the clearance zones if wet machining is carried out. Furthermore, these distance zones serve for better removal of the abraded material to the outer circumference of the grinding tool.
  • the cutting elements are expediently each formed by a diamond grain.
  • the arrangement of individual diamond grains spaced apart from one another achieves a high degree of degradation since the individual diamond grains penetrate deeper into the surface of a material to be machined.
  • the disk-shaped carrier body can also be covered with cutting elements, which are advantageously each formed by a group of two to eight individual diamond grains.
  • the arrangement of groups consisting of several diamond grains creates a larger grinding surface, which is particularly suitable for machining hard materials.
  • the groups penetrate less deeply into the surface of a material to be processed, which means that a surface with a lower surface roughness is created.
  • the distance between the individual cutting elements or groups can be of different sizes.
  • the cutting elements are expediently applied to the carrier body by means of a perforated mask in order to achieve the appropriate distribution of the individual cutting elements on the side surfaces or on the outer circumference of the grinding tool.
  • the carrier body is provided with an appropriate solder, the deformable perforated mask is held over it and sprinkled with cutting elements.
  • the cutting elements are arranged in a distributed manner via corresponding, spaced-apart through bores in the shadow mask and reach the solder layer, which connects the cutting elements to the carrier body.
  • the cutting elements are arranged in one layer on the outer circumference and in the adjoining region of the side surface close to the circumference.
  • the carrier body 1 and 2 show an annular support body 1, the side surfaces 3 are covered with individual cutting elements 4.
  • the carrier body 1 has a region 8 which decreases in thickness S towards the outer circumference 2 and a central through-bore 6 which serves to fasten the grinding tool to the drive shaft of a work tool, not shown.
  • the through hole 6 is designed such that parts of a receiving device with a frustoconical outer contour can be inserted into the through hole 6 from both side surfaces 3.
  • the side surfaces 3 of the carrier body are partially provided with solder 5, which is used to connect the individual cutting elements 4 to the carrier body 1.
  • the individual cutting elements 4 are arranged at a distance A from one another.
  • the grinding tool has zones 7 free of cutting elements, which serve for better removal of abraded material to be removed.
  • the 2 shows an enlarged section of the carrier body 1 viewed in cross section.
  • the section II-II through the carrier body 1 runs through a zone 7 free of cutting elements.
  • the individual cutting elements 4 are both on the outer circumference 2 and in the adjoining region of the side surface close to the circumference 3 arranged.
  • FIG. 3 and 4 show an annular support body 11, on the side surfaces 13 of which there are essentially radially extending, cutting element-free zones 17 in the form of depressions. If such depressions are arranged on both side surfaces 13, the depressions of both side surfaces 13 are arranged offset from one another, so that there is no weakening of the carrier body 11 in the region of the depressions.
  • the depressions can extend from the outer circumference 12 or from the region of the side surfaces 13 close to the circumference to the through bore 16.
  • the cutting elements 14 arranged on the carrier body 11 are individual diamond grains which are embedded in a solder 15 applied to the carrier body 11.
  • the arrangement of these cutting elements 14 on the carrier body 11 can be ordered or arbitrary. In both cases, however, care is taken that the individual cutting elements 14 are arranged at a certain distance A from one another.
  • the distance A can vary depending on the material of the surface to be machined. It is also possible to arrange more cutting elements 14 on the outer circumference 12 or in the adjoining circumferential area of the side faces 13 at a smaller distance A than in the area of the side faces 13 closer to the through hole 16.
  • zones 17 which are free of cutting elements and are designed in the form of depressions.
  • a through hole 16 which does not attach the grinding tool to the drive shaft shown working tool is used.
  • the carrier body 11 tapers symmetrically in the region of the borehole wall of the through hole 16.
  • a receiving device of a drive spindle which is complementary to the taper, can be received in such a way that it does not project beyond a side face 13 of the carrier body 11.
  • the enlargement of the cross section of the carrier body 11 shown in FIG. 4 shows the region 18 of the carrier body 11 which decreases symmetrically to the outer circumference 12 in thickness S, the through bore 16 and the zone 17 free of cutting elements in the form of a depression which extends from the outer circumference 12 extends away over the adjoining, circumferential area of the side surface 13. It can also be seen from the drawing that the depressions arranged on the rear side of the carrier body 11 are not visible, since the depressions on one side surface 13 are offset from the depressions on the opposite side surface 13.
  • FIG 5 and 6 show an annular carrier body 21 which is covered with cutting elements 24 on the outer circumference 22 and in the adjoining region of the side surfaces 23 close to the circumference.
  • the cutting elements 24 are arranged at a distance A from one another on the carrier body 21.
  • the enlarged section of the carrier body 21 shown in cross section shows the region 28 of the carrier body 21 which decreases symmetrically in thickness S and the spacing zones 27 which are each located between the individual cutting elements 24.
  • the spacing zones 27 are also deepened, in such a way that the outer circumference 22 covered with cutting elements 24 and the adjoining region of the side surface 23 close to the circumference are provided with knobs.
  • the knobs 29 are essentially cylindrical, with an individual cutting element 24 being arranged on each knob 29 by means of solder 25.
  • the cutting element 24 can consist of a single cutter or a group of 2 to 8 diamond grains.
  • the diameter of the knobs 29 is designed to be slightly larger than the diameter of an individual cutting element 24.
  • the manufacture of such a carrier body 21 or the arrangement of the knobs 29 takes place according to a predetermined pattern.
  • a shadow mask not shown, with through holes, the Allow diameter only the passage of a single cutting element 24.
  • the through holes of the shadow mask form a pattern, which must be identical to the pattern formed by the knobs 29 of the carrier body 21.
  • a through hole 26 is arranged in the central region of the carrier body and serves to fix the grinding tool to a drive shaft of a work tool, not shown.
  • the carrier body 21 tapers symmetrically on both sides in the region of the borehole wall of the through hole 26.
  • the grinding tool shown in FIG. 7 consists of an annular carrier body 31 with a through hole 36 in the central area.
  • the carrier body 31 On the outer circumference 32 and in the adjoining region of the side surfaces 33 close to the circumference, the carrier body 31 is at least partially provided with solder 35, which is used to connect the cutting elements 34 to the carrier body 31.
  • the cutting elements 34 are arranged in the form of groups of two to eight individual diamond grains in one layer on the carrier body 31. Both on the outer circumference 32 and in the adjoining circumferential region of the side surfaces 33, the groups are arranged in such a way that they are spaced apart from one another by a distance.
  • the carrier body 31 has zones 37 free of cutting elements, which serve for better removal of abraded material to be removed. No solder 35 is arranged in these zones 37, which are free of cutting elements.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Disintegrating Or Milling (AREA)
  • Road Repair (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Road Paving Structures (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Vibration Dampers (AREA)

Abstract

The grinding tool consists of a disc-shaped support body (1) which in the central region has a through-hole (6) used to fix the grinding tool to the driving spindle of an implement. At the outer circumference (2) and in the adjoining region, close to the circumference, of the side faces (3), the support body (1) is covered with a single layer of individual cutting elements (4). <IMAGE>

Description

Die Erfindung betrifft ein Schleifwerkzeug mit einem scheibenförmigen Trägerkörper, der am äusseren Umfang und wenigstens im anschliessenden, umfangsnahen Bereich wenigstens einer Seitenfläche mit Schneidelementen belegt ist.The invention relates to a grinding tool with a disk-shaped carrier body which is covered with cutting elements on the outer circumference and at least in the adjoining region close to the circumference of at least one side surface.

Schleifwerkzeuge der eingangs genannten Art dienen dem Trennen oder Schleifen von harten Werkstoffen, wie beispielsweise Beton oder Stein.Grinding tools of the type mentioned at the outset are used to cut or grind hard materials, such as concrete or stone.

Aus der DE-OS 35 13 687 ist ein Schleifwerkzeug bekannt, das aus einem scheibenförmigen Trägerkörper besteht, der an seinem äusseren Umfang sowie an beiden Seitenflächen streifenförmig mit Diamantkorn belegt ist.From DE-OS 35 13 687 a grinding tool is known which consists of a disc-shaped carrier body which is coated with diamond grain on its outer circumference and on both side surfaces in strips.

Während sich dieses bekannte Schleifwerkzeug als Trennscheibe und Schlitzfräser einsetzen lässt, ist eine Oberflächenbearbeitung nur bedingt möglich, da der scheibenförmige Trägerkörper eine konstante Stärke aufweist. Eine Schrägstellung des Schleifwerkzeuges gegenüber der zu bearbeitenden Oberfläche hätte zur Folge, dass nur die Umfangskontur auf der zu bearbeitenden Oberfläche aufliegt und die eigentliche Schleiffläche von der Oberfläche des Materials beabstandet wäre. Wird das Schleifwerkzeug in eine parallele Lage gegenüber der zu bearbeitenden Oberfläche gebracht, liegen zwar sämtliche, auf einer Seitenfläche angeordneten Schneidelemente auf der zu bearbeitenden Oberfläche auf, was jedoch dazu führt, dass das Schleifwerkzeug auf der Oberfläche des zu bearbeitenden Materiales anfängt zu wandern.While this known grinding tool can be used as a cutting disc and slot milling cutter, surface processing is only possible to a limited extent since the disc-shaped carrier body has a constant thickness. An inclination of the grinding tool with respect to the surface to be processed would have the consequence that only the peripheral contour rests on the surface to be processed and the actual grinding surface would be spaced from the surface of the material. If the grinding tool is brought into a parallel position with respect to the surface to be machined, all cutting elements arranged on one side face lie on the surface to be machined, but this leads to the grinding tool beginning to migrate on the surface of the material to be machined.

Der Erfindung liegt die Aufgabe zugrunde, ein universelles, wirtschaftlich herstellbares Schleifwerkzeug mit hoher Standzeit zu schaffen, das für die Bearbeitung von Oberflächen geeignet ist und sich als Trennscheibe sowie als Schlitzfräser einsetzen lässt.The invention has for its object to provide a universal, economically producible grinding tool with a long service life, which is suitable for machining surfaces and can be used as a cutting disc and as a slot milling cutter.

Erfindungsgemäss wird die Aufgabe dadurch gelöst, dass die Stärke des Trägerkörpers zum äusseren Umfang hin abnimmt, die Schneidelemente mittels Lot mit dem Trägerkörper verbunden sind und zumindest den in der Stärke abnehmenden Bereich belegen, wobei die Schneidelemente in einem Abstand zueinander angeordnet sind, der dem 1- bis 10-fachen eines parallel zur Ebene einer Seitenfläche des Trägerkörpers gemessenen Durchmessers eines Schneidelementes entspricht.According to the invention, the object is achieved in that the thickness of the carrier body decreases towards the outer circumference, the cutting elements are connected to the carrier body by means of solder and at least those in thickness occupy the decreasing area, the cutting elements being arranged at a distance from one another which corresponds to 1 to 10 times a diameter of a cutting element measured parallel to the plane of a side face of the carrier body.

Mit Hilfe des Trägerkörpers, dessen Stärke zum äusseren Umfang hin abnimmt, wird eine Schleiffläche geschaffen, die in einer bestimmten Neigung gegenüber der übrigen Seitenfläche verläuft. Diese geneigte Schleiffläche ermöglicht das schräge Anstellen des Schleifwerkzeuges an die zu bearbeitende Oberfläche während des Schleifvorganges. Auf diese Weise wird ein Wandern des Werkzeuges während des Schleifvorganges verhindert.With the help of the carrier body, the thickness of which decreases towards the outer circumference, a grinding surface is created which runs at a certain inclination with respect to the remaining side surface. This inclined grinding surface enables the grinding tool to be placed at an angle to the surface to be machined during the grinding process. This prevents the tool from migrating during the grinding process.

Die Anbindung der einzelnen Schneidelemente erfolgt mittels eines Lotes, das die Eigenschaft besitzt, die einzelnen Schneidelemente gut an den Trägerkörper anzubinden. Die Verwendung eines Lotes bringt den Vorteil mit sich, dass lediglich etwa 20% bis 25% des Schneidelementes in dem Lot eingebettet sein müssen.The individual cutting elements are connected by means of a solder, which has the property of connecting the individual cutting elements well to the carrier body. The use of a solder has the advantage that only about 20% to 25% of the cutting element has to be embedded in the solder.

Bei der abtragenden Bearbeitung eines Werkstoffes, der zum Verschmieren neigt, ist der Abstand zwischen den einzelnen Schneidelementen vorzugsweise grösser als bei der Bearbeitung eines harten Untergrundes, wobei die Grenzen zwischen dem 1- bis 10-fachen des Durchmessers eines Schneidelementes liegen.When machining a material that tends to smear, the distance between the individual cutting elements is preferably greater than when machining a hard surface, the limits being between 1 and 10 times the diameter of a cutting element.

Der Trägerkörper des Schleifwerkzeuges kann aus Stahl, einer Metall-Legierung, aus Keramik oder Sintermetall bestehen.The carrier body of the grinding tool can consist of steel, a metal alloy, ceramic or sintered metal.

Die Stärke des Trägerkörpers nimmt zweckmässigerweise beidseits symmetrisch ab. Der in der Stärke zum äusseren Umfang hin abnehmende Bereich des Trägerkörpers eignet sich besonders gut zur Oberflächenbearbeitung. Durch die symmetrische Ausgestaltung beider Seitenflächen des Trägerkörpers können beide Seitenflächen für die gleichen Oberflächenbearbeitungen verwendet werden.The thickness of the carrier body expediently decreases symmetrically on both sides. The area of the carrier body which decreases in thickness towards the outer circumference is particularly well suited for surface treatment. Due to the symmetrical design of both side surfaces of the carrier body, both side surfaces can be used for the same surface treatments.

Zumindest der in der Stärke abnehmende Bereich des Trägerkörpers weist vorteilhafterweise schneidelementfreie Zonen auf. Derartige schneidelementfreie Zonen dienen der besseren Abfuhr des abgetragenen Schleifgutes und bewirken eine erhebliche Steigerung der Abbauleistung. Bei der Nassbearbeitung von Oberflächen ermöglichen diese schneidelementfreien Zonen eine Verteilung des Kühlmittels im Bereich der Seitenflächen.At least the area of the carrier body that decreases in thickness advantageously has zones free of cutting elements. Such cutting element-free zones serve for better removal of the abraded material and bring about a significant increase in the mining performance. When wet machining surfaces, these cutting element-free zones allow the coolant to be distributed in the area of the side surfaces.

Die schneidelemenffreien Zonen können sich teilweise vom Zentrum zum äusseren Umfang des Trägerkörpers hin erstrecken. Durch diese schneidelemenffreien Zonen werden die mit Schneidelementen belegten Flächen des Trägerkörpers in mehrere kleinere Flächen unterteilt, die sich ebenfalls wenigstens teilweise vom Zentrum zum äusseren Umfang des Schleifwerkzeuges hin erstrecken. Die schneidelemenffreien Zonen können unterschiedlich breit ausgebildet sein. Auch die Form dieser schneidelemenffreien Zonen kann unterschiedlich sein. So können diese beispielsweise im wesentlichen radial, im wesentlichen drallförmig und im wesentlichen spiralförmig ausgebildet sein, wobei die Drallrichtung des Dralles und der Spirale gegenläufig zur tatsächlichen Drehrichtung des Schleifwerkzeuges verläuft. Eine derartige Drallrichtung der schneidelemenffreien Zone bewirkt eine gute Abfuhr von abgetragenem Schleifgut.The zones free of cutting elements can partially extend from the center to the outer circumference of the carrier body. Through these zones free of cutting elements, the surfaces of the carrier body covered with cutting elements are subdivided into several smaller surfaces, which likewise extend at least partially from the center to the outer circumference of the grinding tool. The zones free of cutting elements can have different widths. The shape of these zones free of cutting elements can also be different. For example, they can be essentially radial, essentially swirl-shaped and essentially spiral-shaped, the swirl direction of the swirl and the spiral running in the opposite direction to the actual direction of rotation of the grinding tool. Such a twisting direction of the zone free of cutting elements causes a good removal of abraded material to be removed.

Zur besseren Abfuhr des abgetragenen Schleifgutes sind die scheidelemenffreien Zonen des Trägerkörpers vorzugsweise als Vertiefungen im Trägerkörper ausgebildet. Bei Trennvorgängen, die in Nassbearbeitung ausgeführt werden, ermöglichen die Vertiefungen einen Transport von Kühlmittel vom Zentrum zum äusseren Umfang des Trägerköpers.For better removal of the abraded material to be removed, the zones of the carrier body free of cutting material are preferably formed as depressions in the carrier body. In the case of separating processes which are carried out in wet processing, the depressions enable coolant to be transported from the center to the outer periphery of the carrier body.

Die Vertiefungen erstrecken sich wenigstens teilweise vom Zentrum zum äusseren Umfang des Trägerkörpers hin und bewirken eine Aufteilung der grossen Seitenfläche des Trägerkörpers in mehrere kleinere Flächen, die sich wenigstens teilweise ebenfalls vom Zentrum zum äusseren Umfang des Schleifwerkzeuges erstrecken. Diese Vertiefungen können unterschiedlich breit ausgebildet sein, so dass ihre Breite vom Zentrum zum äusseren Umfang des Schleifwerkzeuges hin zunimmt. Auf diese Weise werden Vertiefungen mit kreisausschnittartiger Form gebildet.The depressions extend at least partially from the center to the outer circumference of the carrier body and cause the large side surface of the carrier body to be divided into a plurality of smaller surfaces, which at least partly also extend from the center to the outer circumference of the grinding tool. These recesses can be of different widths, so that their width increases from the center to the outer circumference of the grinding tool. In this way, depressions with a circular cutout shape are formed.

Spiralförmig ausgebildete Vertiefungen, deren Drallrichtung entgegengesetzt der tatsächlichen Drehrichtung des Schleifwerkzeuges verläuft, bilden gute Abfuhrkanäle für das abgetragene Schleifgut. Derartige Vertiefungen eignen sich besonders bei der Nassbearbeitung für die Verteilung von Kühlmittel, das beispielsweise durch die Antriebsspindel eines Arbeitsgerätes hindurch dem Schleifwerkzeug während des Bearbeitungsvorganges zugeführt wird. Kühlmittel gelangt somit vom Zentrum zu den Seitenflächen des Schleifwerkzeuges.Spiral recesses, whose direction of twist is opposite to the actual direction of rotation of the grinding tool, form good discharge channels for the removed material. Such depressions are particularly suitable in wet machining for the distribution of coolant, which is supplied to the grinding tool during the machining process, for example, through the drive spindle of an implement. Coolant thus gets from the center to the side surfaces of the grinding tool.

Zweckmässigerweise ist der Trägerkörper in den zwischen den Schneidelementen liegenden Abstandszonen vertieft. Der Trägerkörper besitzt vor dem Aufbringen der Schneidelemente in jenem Bereich, in dem Schneidelemente aufgebracht werden, eine noppenartige Oberfläche. Die einzelnen Schneidelemente eines derart ausgebildeten Schleifwerkzeuges sind mittels eines Lotes auf kleinen, zylindrischen oder kegelstumpfförmigen Noppen angeordnet. Der Durchmesser der Auflagefläche dieser Noppen, auf denen die einzelnen Schneidelemente aufliegen, ist geringfügig grösser ausgebildet als der grösste Durchmesser der einzelnen Schneidelemente.The carrier body is expediently recessed in the spacing zones lying between the cutting elements. The carrier body has the before Cutting elements in the area in which cutting elements are applied have a nub-like surface. The individual cutting elements of a grinding tool designed in this way are arranged on small, cylindrical or frustoconical knobs by means of a solder. The diameter of the contact surface of these knobs, on which the individual cutting elements rest, is designed to be slightly larger than the largest diameter of the individual cutting elements.

In den Abstandszonen ist eine Verteilung von Kühlmittel möglich, wenn eine Nassbearbeitung durchgeführt wird. Weiters dienen diese Abstandszonen der besseren Abfuhr des abgetragenen Schleifgutes zum äusseren Umfang des Schleifwerkzeuges hin.A distribution of coolant is possible in the clearance zones if wet machining is carried out. Furthermore, these distance zones serve for better removal of the abraded material to the outer circumference of the grinding tool.

Die Schneidelemente sind zweckmässigerweise von jeweils einem Diamantkom gebildet. Durch die Anordnung von einander beabstandeten einzelnen Diamantkömem wird eine grosse Abbauleistung erzielt, da die einzelnen Diamantkömer tiefer in die Oberfläche eines zu bearbeitenden Werkstoffes eindringen.The cutting elements are expediently each formed by a diamond grain. The arrangement of individual diamond grains spaced apart from one another achieves a high degree of degradation since the individual diamond grains penetrate deeper into the surface of a material to be machined.

Der scheibenförmige Trägerkörper kann auch mit Schneidelementen belegt sein, die vorteilhafterweise jeweils von einer Gruppe von zwei bis acht einzelnen Diamantkömem gebildet sind. Durch die Anordnung von Gruppen, die aus mehreren Diamantkömem bestehen, wird eine grössere Schleiffläche geschaffen, die insbesondere für die Bearbeitung harter Werkstoffe geeignet ist. Die Gruppen dringen weniger tief in die Oberfläche eines zu bearbeitenden Werkstoffes ein, was zur Folge hat, dass eine Oberfläche mit geringerer Rauhtiefe entsteht.The disk-shaped carrier body can also be covered with cutting elements, which are advantageously each formed by a group of two to eight individual diamond grains. The arrangement of groups consisting of several diamond grains creates a larger grinding surface, which is particularly suitable for machining hard materials. The groups penetrate less deeply into the surface of a material to be processed, which means that a surface with a lower surface roughness is created.

Abhängig vom Verschleissverhalten der einzelnen Schneidelemente kann der Abstand zwischen den einzelnen Schneidelementen bzw. Gruppen unterschiedlich gross sein.Depending on the wear behavior of the individual cutting elements, the distance between the individual cutting elements or groups can be of different sizes.

Zweckmässigerweise sind die Schneidelemente mittels einer Lochmaske auf den Trägerkörper aufgebracht, um die entsprechende Verteilung der einzelnen Schneidelemente auf den Seitenflächen bzw. auf dem äusseren Umfang des Schleifwerkzeuges zu erreichen. Zum Aufbringen der einzelnen Schneidelemente wird der Trägerkörper mit einem entsprechenden Lot versehen, die gegebenenfalls verformbare Lochmaske darübergehalten und mit Schneidelementen bestreut. Über entsprechende, voneinander beabstandete Durchgangsbohrungen in der Lochmaske werden die Schneidelemente verteilt angeordnet und gelangen zur Lotschicht, welche die Schneidelemente mit dem Trägerkörper verbindet.The cutting elements are expediently applied to the carrier body by means of a perforated mask in order to achieve the appropriate distribution of the individual cutting elements on the side surfaces or on the outer circumference of the grinding tool. To apply the individual cutting elements, the carrier body is provided with an appropriate solder, the deformable perforated mask is held over it and sprinkled with cutting elements. The cutting elements are arranged in a distributed manner via corresponding, spaced-apart through bores in the shadow mask and reach the solder layer, which connects the cutting elements to the carrier body.

Die Schneidelemente sind einschichtig am äusseren Umfang und im anschliessenden, umfangsnahen Bereich der Seitenfläche angeordnet.The cutting elements are arranged in one layer on the outer circumference and in the adjoining region of the side surface close to the circumference.

Die Erfindung wird anhand von Zeichnungen, welche mehrere Ausführungsbeispiele darstellen, näher erläutert. Es zeigen:

Fig. 1
ein erfindungsgemässes Schleifwerkzeug, das am äusseren Umfang sowie auf den Seitenflächen mit Schneidelementen belegt ist;
Fig. 2
einen vergrösserten Ausschnitt des Trägerkörpers, gemäss Schnitt II-II in Fig. 1;
Fig. 3
ein weiteres Schleifwerkzeug gemäss Erfindung mit Vertiefungen im Trägerkörper;
Fig. 4
einen vergrösserten Ausschnitt des Trägerkörpers gemäss Schnitt IV-IV in Fig. 3;
Fig. 5
ein weiteres Schleifwerkzeug gemäss Erfindung mit Schneidelementen, die auf einer noppenartigen Oberfläche eines Trägerkörpers angeordnet sind;
Fig. 6
einen vergrösserten Ausschnitt des Trägerkörpers gemäss Schnitt VI-VI in Fig. 5;
Fig. 7
ein weiteres Schleifwerkzeug gemäss Erfindung mit Schneidelementen, die in Form von einzelnen Gruppen auf dem Trägerkörperkörper angeordnet sind.
The invention is explained in more detail with reference to drawings, which represent several exemplary embodiments. Show it:
Fig. 1
an inventive grinding tool, which is coated on the outer circumference and on the side surfaces with cutting elements;
Fig. 2
an enlarged section of the carrier body, according to section II-II in Fig. 1;
Fig. 3
another grinding tool according to the invention with depressions in the carrier body;
Fig. 4
an enlarged section of the carrier body according to section IV-IV in Fig. 3;
Fig. 5
a further grinding tool according to the invention with cutting elements which are arranged on a knob-like surface of a carrier body;
Fig. 6
an enlarged section of the support body according to section VI-VI in Fig. 5;
Fig. 7
a further grinding tool according to the invention with cutting elements which are arranged in the form of individual groups on the carrier body.

Die Fig. 1 und 2 zeigen einen kreisringförmigen Trägerkörper 1, dessen Seitenflächen 3 mit einzelnen Schneidelementen 4 belegt sind. Der Trägerkörper 1 weist einen in der Stärke S zum äusseren Umfang 2 hin abnehmenden Bereich 8 und eine zentrale Durchgangsbohrung 6 auf, die der Befestigung des Schleifwerkzeuges an der Antriebswelle eines nicht dargestellten Arbeitswerkzeuges dient. Die Durchgangsbohrung 6 ist derart ausgebildet, dass von beiden Seitenflächen 3 her Teile einer Aufnahmevorrichtung mit kegelstumpfförmiger Aussenkontur in die Durchgangsbohrung 6 einsetzbar sind.1 and 2 show an annular support body 1, the side surfaces 3 are covered with individual cutting elements 4. The carrier body 1 has a region 8 which decreases in thickness S towards the outer circumference 2 and a central through-bore 6 which serves to fasten the grinding tool to the drive shaft of a work tool, not shown. The through hole 6 is designed such that parts of a receiving device with a frustoconical outer contour can be inserted into the through hole 6 from both side surfaces 3.

Die Seitenflächen 3 des Trägerkörpers sind teilweise mit Lot 5 versehen, das der Anbindung der einzelnen Schneidelemente 4 am Trägerkörper 1 dient. Die einzelnen Schneidelemente 4 sind im Abstand A voneinander beabstandet angeordnet. Das Schleifwerkzeug weist schneidelemenffreie Zonen 7 auf, die der besseren Abfuhr von abgetragenem Schleifgut dienen.The side surfaces 3 of the carrier body are partially provided with solder 5, which is used to connect the individual cutting elements 4 to the carrier body 1. The individual cutting elements 4 are arranged at a distance A from one another. The grinding tool has zones 7 free of cutting elements, which serve for better removal of abraded material to be removed.

Die Fig. 2 zeigt einen vergrösserten Ausschnitt des im Querschnitt betrachteten Trägerkörpers 1. Der Schnitt II-II durch den Trägerkörper 1 verläuft durch eine schneidelementfreie Zone 7. Die einzelnen Schneidelemente 4 sind sowohl am äusseren Umfang 2 als auch im anschliessenden, umfangsnahen Bereich der Seitenfläche 3 angeordnet.2 shows an enlarged section of the carrier body 1 viewed in cross section. The section II-II through the carrier body 1 runs through a zone 7 free of cutting elements. The individual cutting elements 4 are both on the outer circumference 2 and in the adjoining region of the side surface close to the circumference 3 arranged.

Die Fig. 3 und 4 zeigen einen kreisringförmigen Trägerkörper 11, auf dessen Seitenflächen 13 im wesentlichen radial verlaufende, schneidelementfreie Zonen 17 in Form von Vertiefungen aufweist. Sind derartige Vertiefungen auf beiden Seitenflächen 13 angeordnet, so sind die Vertiefungen beider Seitenflächen 13 zueinander versetzt angeordnet, so dass im Bereich der Vertiefungen keine Schwächung des Trägerkörpers 11 entsteht.3 and 4 show an annular support body 11, on the side surfaces 13 of which there are essentially radially extending, cutting element-free zones 17 in the form of depressions. If such depressions are arranged on both side surfaces 13, the depressions of both side surfaces 13 are arranged offset from one another, so that there is no weakening of the carrier body 11 in the region of the depressions.

Die Vertiefungen können sich vom äusseren Umfang 12 oder vom umfangsnahen Bereich der Seitenflächen 13 bis zur Durchgangsbohrung 16 erstrecken. Die auf dem Trägerkörper 11 angeordneten Schneidelemente 14 sind einzelne Diamantkömer, die in einem auf dem Trägerkörper 11 aufgebrachten Lot 15 eingebettet sind. Die Anordnung dieser Schneidelemente 14 auf dem Trägerkörper 11 kann geordnet oder willkürlich erfolgen. In beiden Fällen wird jedoch darauf geachtet, dass die einzelnen Schneidelemente 14 in einem bestimmten Abstand A zueinander angeordnet sind. Der Abstand A kann je nach Material der zu bearbeitenden Oberfläche variieren. Es ist auch möglich, am äusseren Umfang 12 bzw. im anschliessenden umfangsnahen Bereich der Seitenflächen 13 in kleinerem Abstand A voneinander mehr Schneidelemente 14 anzuordnen, als in dem der Durchgangsbohrung 16 näherliegenden Bereich der Seitenflächen 13.The depressions can extend from the outer circumference 12 or from the region of the side surfaces 13 close to the circumference to the through bore 16. The cutting elements 14 arranged on the carrier body 11 are individual diamond grains which are embedded in a solder 15 applied to the carrier body 11. The arrangement of these cutting elements 14 on the carrier body 11 can be ordered or arbitrary. In both cases, however, care is taken that the individual cutting elements 14 are arranged at a certain distance A from one another. The distance A can vary depending on the material of the surface to be machined. It is also possible to arrange more cutting elements 14 on the outer circumference 12 or in the adjoining circumferential area of the side faces 13 at a smaller distance A than in the area of the side faces 13 closer to the through hole 16.

Durch die schneidelementfreien Zonen 17, die in Form von Vertiefungen ausgebildet sind, wird eine gute Abfuhr des abgetragenen Schleifgutes erreicht.A good removal of the abraded material to be removed is achieved by the zones 17 which are free of cutting elements and are designed in the form of depressions.

Im Zentrum des Trägerkörpers 11 ist eine Durchgangsbohrung 16 angeordnet, die der Befestigung des Schleifwerkzeuges an der Antriebswelle eines nicht dargestellten Arbeitswerkzeuges dient. Der Trägerkörper 11 verjüngt sich im Bereich der Bohrlochwandung der Durchgangsbohrung 16 symmetrisch. In einer derartig ausgebildeten Durchgangsbohrung 16 ist eine komplementär zu der Verjüngung ausgebildete Aufnahmevorrichtung einer Antriebsspindel derart aufnehmbar, dass diese eine Seitenfläche 13 des Trägerkörpers 11 nicht überragt.In the center of the carrier body 11 there is a through hole 16, which does not attach the grinding tool to the drive shaft shown working tool is used. The carrier body 11 tapers symmetrically in the region of the borehole wall of the through hole 16. In a through bore 16 designed in this way, a receiving device of a drive spindle, which is complementary to the taper, can be received in such a way that it does not project beyond a side face 13 of the carrier body 11.

Die in Fig. 4 dargestellte Vergrösserung des Querschnittes des Trägerkörpers 11 zeigt den symmetrisch zum äusseren Umfang 12 hin in der Stärke S abnehmenden Bereich 18 des Trägerkörpers 11, die Durchgangsbohrung 16 und die schneidelementfreie Zone 17 in Form einer Vertiefung, die sich vom äusseren Umfang 12 weg über den anschliessenden, umfangsnahen Bereich der Seitenfläche 13 erstreckt. Aus der gezeichneten Darstellung ist ebenfalls entnehmbar, dass die auf der rückwärtigen Seite des Trägerkörpers 11 angeordneten Vertiefungen nicht sichtbar sind, da die Vertiefungen einer Seitenfläche 13 gegenüber den Vertiefungen der gegenüberliegenden Seitenfläche 13 versetzt sind.The enlargement of the cross section of the carrier body 11 shown in FIG. 4 shows the region 18 of the carrier body 11 which decreases symmetrically to the outer circumference 12 in thickness S, the through bore 16 and the zone 17 free of cutting elements in the form of a depression which extends from the outer circumference 12 extends away over the adjoining, circumferential area of the side surface 13. It can also be seen from the drawing that the depressions arranged on the rear side of the carrier body 11 are not visible, since the depressions on one side surface 13 are offset from the depressions on the opposite side surface 13.

Die Fig. 5 und 6 zeigen einen kreisringförmigen Trägerkörper 21, der am äusseren Umfang 22 und im anschliessenden, umfangsnahen Bereich der Seitenflächen 23 mit Schneidelementen 24 belegt ist. Die Schneidelemente 24 sind im Abstand A voneinander beabstandet auf dem Trägerkörper 21 angeordnet.5 and 6 show an annular carrier body 21 which is covered with cutting elements 24 on the outer circumference 22 and in the adjoining region of the side surfaces 23 close to the circumference. The cutting elements 24 are arranged at a distance A from one another on the carrier body 21.

Der vergrösserte Ausschnitt des im Querschnitt dargestellten Trägerkörpers 21 zeigt den in der Stärke S symmetrisch abnehmenden Bereich 28 des Trägerkörpers 21 und die Abstandszonen 27, die sich jeweils zwischen den einzelnen Schneidelementen 24 befinden. Die Abstandszonen 27 sind ausserdem vertieft, und zwar derart, dass der mit Schneidelementen 24 belegte äussere Umfang 22 und der anschliessende, umfangsnahe Bereich der Seitenfläche 23 mit Noppen versehen sind.The enlarged section of the carrier body 21 shown in cross section shows the region 28 of the carrier body 21 which decreases symmetrically in thickness S and the spacing zones 27 which are each located between the individual cutting elements 24. The spacing zones 27 are also deepened, in such a way that the outer circumference 22 covered with cutting elements 24 and the adjoining region of the side surface 23 close to the circumference are provided with knobs.

Die Noppen 29 sind im wesentlichen zylindrisch ausgebildet, wobei auf jedem Noppen 29 jeweils ein einzelnes Schneidelement 24 mittels Lot 25 angeordnet ist. Das Schneidelement 24 kann aus einem einzelnen Schneidkom oder aus einer Gruppe mit 2 bis 8 Diamantkörnern bestehen. Der Durchmesser der Noppen 29 ist geringfügig grösser ausgebildet als der Durchmesser eines einzelnen Schneidelementes 24. Die Herstellung eines derartigen Trägerkörpers 21 bzw. die Anordnung der Noppen 29 erfolgt nach einem vorbestimmten Muster. Für die Aufbringung des Lotes 25 und die einzelnen Schneidelemente 24 ist es notwendig, eine nicht dargestellte Lochmaske mit Durchgangsbohrungen zu verwenden, deren Durchmesser jeweils nur den Durchlass eines einzelnen Schneidelementes 24 erlauben. Die Durchgangsbohrungen der Lochmaske bilden ein Muster, das identisch sein muss mit dem Muster, das von den Noppen 29 des Trägerkörpers 21 gebildet wird.The knobs 29 are essentially cylindrical, with an individual cutting element 24 being arranged on each knob 29 by means of solder 25. The cutting element 24 can consist of a single cutter or a group of 2 to 8 diamond grains. The diameter of the knobs 29 is designed to be slightly larger than the diameter of an individual cutting element 24. The manufacture of such a carrier body 21 or the arrangement of the knobs 29 takes place according to a predetermined pattern. For the application of the solder 25 and the individual cutting elements 24, it is necessary to use a shadow mask, not shown, with through holes, the Allow diameter only the passage of a single cutting element 24. The through holes of the shadow mask form a pattern, which must be identical to the pattern formed by the knobs 29 of the carrier body 21.

Im zentralen Bereich des Trägerkörpers ist eine Durchgangsbohrung 26 angeordnet, die der Festlegung des Schleifwerkzeuges an einer Antriebswelle eines nicht dargestellten Arbeitswerkzeuges dient. Der Trägerkörper 21 verjüngt sich beidseits symmetrisch im Bereich der Bohrlochwandung der Durchgangsbohrung 26.A through hole 26 is arranged in the central region of the carrier body and serves to fix the grinding tool to a drive shaft of a work tool, not shown. The carrier body 21 tapers symmetrically on both sides in the region of the borehole wall of the through hole 26.

Das in Fig. 7 dargestellte Schleifwerkzeug besteht aus einem kreisringförmigen Trägerkörper 31 mit einer Durchgangsbohrung 36 im zentralen Bereich. Am äusseren Umfang 32 und im anschliessenden, umfangsnahen Bereich der Seitenflächen 33 ist der Trägerkörper 31 wenigstens teilweise mit Lot 35 versehen, das der Anbindung der Schneidelemente 34 am Trägerkörper 31 dient. Die Schneidelemente 34 sind in Form von Gruppen von jeweils zwei bis acht einzelnen Diamantkömem einschichtig auf dem Trägerkörper 31 angeordnet. Sowohl am äusseren Umfang 32 als auch im anschliessenden umfangsnahen Bereich der Seitenflächen 33 sind die Gruppen derart angeordnet, dass sie im Abstand A voneinander beabstandet sind.The grinding tool shown in FIG. 7 consists of an annular carrier body 31 with a through hole 36 in the central area. On the outer circumference 32 and in the adjoining region of the side surfaces 33 close to the circumference, the carrier body 31 is at least partially provided with solder 35, which is used to connect the cutting elements 34 to the carrier body 31. The cutting elements 34 are arranged in the form of groups of two to eight individual diamond grains in one layer on the carrier body 31. Both on the outer circumference 32 and in the adjoining circumferential region of the side surfaces 33, the groups are arranged in such a way that they are spaced apart from one another by a distance.

Der Trägerkörper 31 besitzt schneidelementfreie Zonen 37, die der besseren Abfuhr von abgetragenem Schleifgut dienen. In diesen schneidelemenffreien Zonen 37 ist auch kein Lot 35 angeordnet.The carrier body 31 has zones 37 free of cutting elements, which serve for better removal of abraded material to be removed. No solder 35 is arranged in these zones 37, which are free of cutting elements.

Claims (8)

Schleifwerkzeug mit einem scheibenförmigen Trägerkörper, (1, 11, 21, 31) der am äusseren Umfang (2, 12, 22, 32) und wenigstens im anschliessenden, umfangsnahen Bereich wenigstens einer Seitenfläche (3, 13, 23, 33) mit Schneidelementen (4, 14, 24, 34) belegt ist, dadurch gekennzeichnet, dass die Stärke (S) des Trägerkörpers (1, 11, 21, 31) zum äusseren Umfang (2, 12, 22, 32) hin abnimmt, die Schneidelemente (4, 14, 24, 34) mittels Lot (5, 15, 25, 35) mit dem Trägerkörper (1, 11, 21, 31) verbunden sind und zumindest den in der Stärke (S) abnehmenden Bereich (8, 18, 28,) belegen, wobei die Schneidelemente (4, 14, 24, 34) in einem Abstand (A) zueinander angeordnet sind, der dem 1- bis 10-fachen eines parallel zur Ebene einer Seitenfläche (3, 13, 23, 33) des Trägerkörpers (1, 11, 21, 31) gemessenen Durchmessers eines Schneidelementes (4, 14, 24, 34) entspricht.Grinding tool with a disc-shaped carrier body (1, 11, 21, 31), which has cutting elements on the outer circumference (2, 12, 22, 32) and at least in the adjoining area close to the circumference of at least one side surface (3, 13, 23, 33) 4, 14, 24, is 34), characterized in that the thickness (S) of the carrier body (1, 11, 21, 31) to the outer periphery (2, 12, 22, decreases toward 32), the cutting elements (4 , 14, 24, 34) are connected to the carrier body (1, 11, 21, 31) by means of solder (5, 15, 25, 35) and at least the area (8, 18, 28, ), whereby the cutting elements (4, 14, 24, 34) are arranged at a distance (A) from one another that is 1 to 10 times one parallel to the plane of a side face (3, 13, 23, 33) of the carrier body (1, 11, 21, 31) measured diameter of a cutting element (4, 14, 24, 34) corresponds. Schleifwerkzeug nach Anspruch 1, dadurch gekennzeichnet, dass die Stärke (S) des Trägerkörpers (1, 11, 21, 31) beidseits symmetrisch abnimmt.Grinding tool according to claim 1, characterized in that the thickness (S) of the carrier body (1, 11, 21, 31) decreases symmetrically on both sides. Schleifwerkzeug nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass zumindest der in der Stärke (S) abnehmende Bereich (8, 18, 28) des Trägerkörpers (1, 11, 21, 31) schneidelementfreie Zonen aufweist.Grinding tool according to one of claims 1 or 2, characterized in that at least the area (8, 18, 28) of the carrier body (1, 11, 21, 31) which decreases in thickness (S) has zones free of cutting elements. Schleifwerkzeug nach Anspruch 3, dadurch gekennzeichnet, dass die schneidelementfreien Zonen (17) des Trägerkörpers (11) als Vertiefungen im Trägerkörper (11) ausgebildet sind.Grinding tool according to claim 3, characterized in that the cutting element-free zones (17) of the carrier body (11) are formed as depressions in the carrier body (11). Schleifwerkzeug nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass der Trägerkörper (21) in den, zwischen den Schneidelementen (24) liegenden Abstandszonen (27) vertieft ist.Grinding tool according to one of claims 1 to 4, characterized in that the carrier body (21) is recessed in the spacing zones (27) lying between the cutting elements (24). Schleifwerkzeug nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Schneidelemente (4, 14, 24) von jeweils einem Diamantkorn gebildet sind.Grinding tool according to one of claims 1 to 5, characterized in that the cutting elements (4, 14, 24) are each formed by a diamond grain. Schleifwerkzeug nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Schneidelemente (34) jeweils von einer Gruppe von zwei bis acht einzelnen Diamantkömem gebildet sind.Grinding tool according to one of claims 1 to 5, characterized in that the cutting elements (34) are each formed by a group of two to eight individual diamond grains. Schleifwerkzeug nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die Schneidelemente (4, 14, 24, 34) mittels einer Lochmaske auf den Trägerkörper (1, 11, 21, 31) aufgebracht sind.Grinding tool according to one of claims 1 to 7, characterized in that the cutting elements (4, 14, 24, 34) are applied to the carrier body (1, 11, 21, 31) by means of a shadow mask.
EP93810799A 1992-12-18 1993-11-17 Disc-like grinding tool Expired - Lifetime EP0605359B1 (en)

Applications Claiming Priority (2)

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DE4243017 1992-12-18
DE4243017A DE4243017A1 (en) 1992-12-18 1992-12-18 Disc-shaped grinding tool

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EP0605359B1 EP0605359B1 (en) 1997-01-15

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JP (1) JPH06210571A (en)
KR (1) KR100287610B1 (en)
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AT (1) ATE147673T1 (en)
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CA (1) CA2111800C (en)
DE (2) DE4243017A1 (en)
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Also Published As

Publication number Publication date
FI935603A0 (en) 1993-12-14
ES2096264T3 (en) 1997-03-01
CN1042111C (en) 1999-02-17
FI935603A (en) 1994-06-19
DE59305148D1 (en) 1997-02-27
JPH06210571A (en) 1994-08-02
TW237409B (en) 1995-01-01
KR100287610B1 (en) 2001-04-16
KR940013733A (en) 1994-07-15
AU663634B2 (en) 1995-10-12
PL301516A1 (en) 1994-06-27
CN1091350A (en) 1994-08-31
CA2111800A1 (en) 1994-06-19
PL172370B1 (en) 1997-09-30
EP0605359B1 (en) 1997-01-15
DK0605359T3 (en) 1997-07-21
HUT65636A (en) 1994-07-28
US5406929A (en) 1995-04-18
HU212295B (en) 1996-05-28
DE4243017A1 (en) 1994-06-23
AU5258393A (en) 1994-06-30
CA2111800C (en) 2001-10-30
HU9303649D0 (en) 1994-04-28
ATE147673T1 (en) 1997-02-15

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