EP0321969B1 - Dressing roll and its manufacturing method - Google Patents

Dressing roll and its manufacturing method Download PDF

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Publication number
EP0321969B1
EP0321969B1 EP88121443A EP88121443A EP0321969B1 EP 0321969 B1 EP0321969 B1 EP 0321969B1 EP 88121443 A EP88121443 A EP 88121443A EP 88121443 A EP88121443 A EP 88121443A EP 0321969 B1 EP0321969 B1 EP 0321969B1
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EP
European Patent Office
Prior art keywords
dressing
grinding wheel
diamond needles
peripheral
diamond
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EP88121443A
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German (de)
French (fr)
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EP0321969A3 (en
EP0321969A2 (en
Inventor
Horst Josef Dr. Wedeniwski
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Fortuna Werke Maschinenfabrik GmbH
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Fortuna Werke Maschinenfabrik GmbH
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24DTOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D18/00Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B53/00Devices or means for dressing or conditioning abrasive surfaces
    • B24B53/12Dressing tools; Holders therefor
    • B24B53/14Dressing tools equipped with rotary rollers or cutters; Holders therefor

Definitions

  • the invention relates to a dressing roller with a circumferential peripheral surface according to the preamble of claim 1, which is set with diamonds.
  • a roll of intent is e.g. in EP-A-0 116 668.
  • Dressing rolls of the type mentioned above are known from the "Handbook of Manufacturing Technology" by G. Spur and Th. Stöfferle, Carl Hanser Verlag, 1980, Volume 3/2, page 144.
  • Known dressing rolls can be produced in such a way that a paste is applied to the surface of a cylindrical or double-conical dressing roll, which paste can be reduced chemically, so that ultimately a metallic coating remains on the surface of the dressing roll.
  • the diamonds are pressed into the paste by hand, according to a predetermined distribution plan with, for example, 40 diamonds per cm2.
  • the dressing process is carried out along a line on the grinding wheel if the dressing roller and the grinding wheel are arranged coaxially, as is customary turn in opposite directions and the dressing roller is guided at least approximately along a surface line of the grinding wheel.
  • a spiral-shaped dressing groove is then formed on the surface of the grinding wheel, so that it is only dressed in the area of this groove.
  • the invention is therefore based on the object of developing a dressing roller of the type mentioned at the outset in such a way that the grinding wheel is dressed flat and spiral-shaped dressing grooves are avoided.
  • the diamonds are designed as diamond needles which protrude obliquely from the circumferential surface and overlap with their free ends in the circumferential direction.
  • Another advantage is that during dressing, the surface areas of the grinding wheel are pre-dressed from the free end of the leading diamond needle and re-dressed by the trailing free end of the next diamond needle, so that this double engagement of the dressing roller in a short time interval and slightly offset points on the grinding wheel surface, a particularly effective smashing process occurs on the grinding wheel surface.
  • the diamond needles are arranged on two conical circumferential surfaces which intersect along an outer circumferential line and which Diamond needles protruding from a peripheral surface protrude with their free ends beyond the other peripheral surface.
  • the invention further relates to a method for producing a dressing roller of the aforementioned type.
  • pocket-shaped recesses are made according to the invention in the peripheral surface, the diamond needles are inserted with their lower ends into the recesses and fixed there by means of an investment material.
  • This measure has the advantage that a suitable angle of inclination for the diamond needles can already be predetermined by the configuration of the pocket-shaped recesses, so that the desired overlap occurs with a suitable length of the diamond needles.
  • the recesses are designed as a circumferential annular groove.
  • This measure has the advantage that the circumferential annular groove can be formed with simpler means in the manufacture of the dressing roller than is the case with individual recesses.
  • the recesses are made by means of wire EDM.
  • This measure has the advantage that when fine eroding wires are used, defined shaped and distributed recesses can be made in the peripheral surfaces, the position and position of which can also be adapted to the available diamond needles.
  • the investment material is a sintered material.
  • This measure has the advantage that the diamond needles can be securely fixed in the pocket-shaped recesses by a technologically simple process.
  • 10 designates a dressing roller as it is used to recondition worn grinding wheels.
  • the dressing roller 10 is of rotationally symmetrical shape and has two radial end faces 11. On the circumference it is provided with two conical peripheral surfaces 12, 13 which intersect approximately in the longitudinal center plane of the dressing roller 10 along an outer circumferential line 14.
  • the dressing roller 10 is provided on its right-hand conical peripheral surface 12 in FIG. 1 with diamond needles 15a, 15b, 15c ... and in a mirror-symmetrical manner 13 diamond needles 16a, 16b, 16c ... are arranged on the second conical peripheral surface.
  • the arrangement of the diamond needles 15 ... and 16 ... is selected so that they protrude obliquely from the circumferential surfaces 12, 13 and protrude with the free ends 17, 18 each above the other circumferential surface 13, 12. This results in a zipper-like arrangement in which the free ends 17, 18 overlap by an amount x.
  • This slope must be taken into account when setting the amount x of the overlap on the dressing roller 10, so that for a given grinding wheel geometry and given data for the peripheral speed or speed of the grinding wheel and for a given feed speed of the dressing roller in the axial direction, a strip-shaped engagement area of the overlapping free ends 17, 18 arises on the grinding wheel, which does not leave any unadjusted surface areas.
  • pocket-shaped recesses 20 are now made in the peripheral surfaces 12, 13 in the vicinity of the peripheral line 14. These pocket-shaped recesses 20 run essentially in the axial direction, but can also be set slightly towards the axial direction.
  • a continuous circumferential annular groove can also be provided, into which the diamond needles 15, distributed over the circumference, are inserted.
  • the shape of the pocket-shaped recesses 20 is set so that the diamond needles 15 lie with their lower end 22 in the recess 20 and can be covered there with an investment material 23 such that the diamond needles 15 over a considerable part of them Length form fit in the recesses 20 with investment material 23.
  • the investment material 23 fills the entire annular groove 20a, as indicated by hatching in FIGS. 1 and 2.
  • the investment material 23 can, as FIG. 4 clearly shows, partially cover the peripheral surfaces 12 and 13 beyond the edge of the annular groove 20a or the recesses 20.
  • the investment material 23 can over it extend out to close to the tip of the diamond needles 15 as long as only a sufficiently long tip protrudes from the investment material 23.
  • Either a reducible metal paste can be used as investment material 23, so that the diamond needles 15 are held in the recesses 20 after the reduction of the metallic investment compound 23, but a sintered material can also be used and the diamond needles 15 can be sintered into the recesses 20 by appropriate heat treatment .

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)

Description

Die Erfindung betrifft eine Abrichtrolle mit einer umlaufenden Umfangsfläche gemäß dem Oberbegriff des Anspruchs 1, die mit Diamanten besetzt ist. Eine Solche Absichtrolle ist z.B. in des EP-A-0 116 668 beschsieben.The invention relates to a dressing roller with a circumferential peripheral surface according to the preamble of claim 1, which is set with diamonds. Such a roll of intent is e.g. in EP-A-0 116 668.

Es ist bekannt, verschlissene Schleifscheiben von Schleifmaschinen dadurch wieder aufzuarbeiten, daß man mit einer Diamantprofilrolle die verschlissene Oberfläche der Schleifscheibe bearbeitet. Die aus der Oberfläche einer solchen Abrichtrolle vorstehenden Diamanten zertrümmern mit ihren Schneiden sowohl Materialreste der Werkstücke, die mit der Schleifscheibe zuvor bearbeitet wurden und sich in den Spanräumen zwischen den Schleifkörnern festgesetzt haben, sie zertrümmern aber auch die Körner der Schleifscheibe und die Einbettmasse der Schleifkörner, die sogenannte Kornbindung, damit nach dem Abrichten der Schleifscheibe eine Oberfläche zur Verfügung steht, bei der scharfe Schleifmaterialkörner mit dazwischen liegenden Spanräumen aus der Oberfläche der Schleifscheibe vorstehen.It is known to recondition worn grinding wheels from grinding machines by machining the worn surface of the grinding wheel with a diamond profile roller. The diamonds protruding from the surface of such a dressing roller smash both material residues of the workpieces with their cutting edges, which were previously with the grinding wheel processed and have settled in the chip spaces between the abrasive grains, but they also shatter the grains of the grinding wheel and the investment material of the abrasive grains, the so-called grain bond, so that a surface is available after dressing the grinding wheel, with sharp abrasive material grains lying in between Protect chip spaces from the surface of the grinding wheel.

Abrichtrollen der vorstehend genannten Art sind aus dem "Handbuch der Fertigungstechnik" von G. Spur und Th. Stöfferle, Carl Hanser Verlag, 1980, Band 3/2, Seite 144 bekannt.Dressing rolls of the type mentioned above are known from the "Handbook of Manufacturing Technology" by G. Spur and Th. Stöfferle, Carl Hanser Verlag, 1980, Volume 3/2, page 144.

Bekannte Abrichtrollen können so hergestellt werden, daß auf die Oberfläche einer zylindrischen oder doppeltkonischen Abrichtrolle eine Paste aufgebracht wird, die chemisch reduzierbar ist, so daß letztendlich ein metallischer Belag auf der Oberfläche der Abrichtrolle verbleibt. Vor dem Reduzieren werden die Diamanten von Hand in die Paste eingedrückt und zwar nach einem vorgegebenen Verteilungsplan mit beispielsweise 40 Diamanten pro cm².Known dressing rolls can be produced in such a way that a paste is applied to the surface of a cylindrical or double-conical dressing roll, which paste can be reduced chemically, so that ultimately a metallic coating remains on the surface of the dressing roll. Before the reduction, the diamonds are pressed into the paste by hand, according to a predetermined distribution plan with, for example, 40 diamonds per cm².

Bei bekannten Abrichtrollen kann dann, wenn die Diamanten entlang einer Umfangslinie der Abrichtrolle angeordnet sind, der Fall eintreten, daß der Abrichtvorgang entlang einer Linie an der Schleifscheibe ausgeführt wird, wenn die Abrichtrolle und die Schleifscheibe, wie dies üblich ist, gleichachsig angeordnet sind, sich gegenläufig drehen und die Abrichtrolle wenigstens näherungsweise entlang einer Mantellinie der Schleifscheibe geführt wird. Beim Vorschub der Abrichtrolle in Richtung der Mantellinie entsteht dann eine spiralförmige Abrichtrille auf der Oberfläche der Schleifscheibe, so daß diese nur jeweils im Bereich dieser Rille abgerichtet ist.In known dressing rollers, if the diamonds are arranged along a circumferential line of the dressing roller, the case may occur that the dressing process is carried out along a line on the grinding wheel if the dressing roller and the grinding wheel are arranged coaxially, as is customary turn in opposite directions and the dressing roller is guided at least approximately along a surface line of the grinding wheel. When the dressing roller is advanced in the direction of the surface line, a spiral-shaped dressing groove is then formed on the surface of the grinding wheel, so that it is only dressed in the area of this groove.

Der Erfindung liegt daher die Aufgabe zugrunde, eine Abrichtrolle der eingangs erwähnten Art dahingehend weiterzubilden, daß die Schleifscheibe flächig abgerichtet wird und spiralförmige Abrichtrillen vermieden werden.The invention is therefore based on the object of developing a dressing roller of the type mentioned at the outset in such a way that the grinding wheel is dressed flat and spiral-shaped dressing grooves are avoided.

Diese Aufgabe wurde erfindungsgemäß dadurch gelöst, daß die Diamanten als Diamantnadeln ausgebildet sind, die schräg aus der Umfangsfläche herausragen und sich mit ihren freien Enden in Umfangsrichtung überlappen.This object was achieved in that the diamonds are designed as diamond needles which protrude obliquely from the circumferential surface and overlap with their free ends in the circumferential direction.

Die der Erfindung zugrunde liegende Aufgabe wurde auf diese Weise vollkommen gelöst, weil die sich mit ihren freien Enden überlappenden Diamantnadeln bei geeignet eingestellter Überlappung einen Streifen überstreichen, der bei entsprechend bemessenem Vorschub in Richtung der Mantellinie der Schleifscheibe zu einer vollflächigen Überdeckung der Schleifscheibenoberfläche und damit zu einem vollständigen Abrichten der Schleifscheibenoberfläche führt.The object on which the invention is based was completely achieved in this way because the diamond needles overlapping with their free ends overlap a strip with a suitably set overlap which, with an appropriately dimensioned feed in the direction of the surface line of the grinding wheel, leads to a full coverage of the grinding wheel surface and thus to a complete dressing of the grinding wheel surface.

Weiterhin kommt vorteilhaft hinzu, daß beim Abrichten die Oberflächenbereiche der Schleifscheibe vom freien Ende der vorauslaufenden Diamantnadel vor-abgerichtet und durch das nachlaufende freie Ende der nächsten Diamantnadel nach-abgerichtet werden, so daß durch dieses zweimalige Eingreifen der Abrichtrolle in kurzem zeitlichen Abstand und an geringfügig versetzten Punkten der Schleifscheibenoberfläche ein besonders effektiver Zertrümmerungsvorgang an der Schleifscheibenoberfläche entsteht.Another advantage is that during dressing, the surface areas of the grinding wheel are pre-dressed from the free end of the leading diamond needle and re-dressed by the trailing free end of the next diamond needle, so that this double engagement of the dressing roller in a short time interval and slightly offset points on the grinding wheel surface, a particularly effective smashing process occurs on the grinding wheel surface.

Bei einer bevorzugten Ausführungsform der Erfindung sind die Diamantnadeln auf zwei konischen Umfangsflächen angeordnet, die sich entlang einer äußeren Umfangslinie schneiden und die aus einer Umfangsfläche herausragenden Diamantnadeln ragen mit ihren freien Enden bis über die jeweils andere Umfangsfläche.In a preferred embodiment of the invention, the diamond needles are arranged on two conical circumferential surfaces which intersect along an outer circumferential line and which Diamond needles protruding from a peripheral surface protrude with their free ends beyond the other peripheral surface.

Diese Maßnahmen sind besonders vorteilhaft, weil das weiter oben geschilderte Problem der spiralförmigen Abrichtrille sich naturgemäß vor allem dann stellt, wenn die Abrichtrolle selbst nur an einem einzigen Punkt ihrer Oberfläche an der Schleifscheibe anliegt, wie dies bei spitz zulaufenden konischen Umfangsflächen der Fall ist. Durch die geschilderte Überlappung der Diamantnadeln in die jeweils andere Umfangsfläche hinein wird nun ebenfalls eine streifenförmige Einwirkung der Abrichtrolle erzielt, so daß bei dieser an sich bekannten Bauform der spitz zulaufenden Abrichtrolle ebenfalls ein flächiges Abrichten erreicht wird.These measures are particularly advantageous because the problem of the spiral dressing groove described above naturally arises especially when the dressing roller itself only abuts the grinding wheel at a single point on its surface, as is the case with tapered conical peripheral surfaces. The described overlap of the diamond needles in the other circumferential surface also results in a strip-shaped action of the dressing roller, so that a flat dressing is also achieved with this known design of the tapered dressing roller.

Die Erfindung betrifft ferner ein Verfahren zum Herstellen einer Abrichtrolle der vorstehend genannten Art.The invention further relates to a method for producing a dressing roller of the aforementioned type.

Hierzu werden erfindungsgemäß in die Umfangsfläche taschenförmige Ausnehmungen eingebracht, die Diamantnadeln werden mit ihren unteren Enden in die Ausnehmungen eingesetzt und dort mittels einer Einbettmasse fixiert.For this purpose, pocket-shaped recesses are made according to the invention in the peripheral surface, the diamond needles are inserted with their lower ends into the recesses and fixed there by means of an investment material.

Diese Maßnahme hat den Vorteil, daß durch die Ausgestaltung der taschenförmigen Ausnehmungen bereits ein geeigneter Neigungswinkel für die Diamantnadeln vorgegeben werden kann, so daß bei geeigneter Länge der Diamantnadeln die gewünschte Überlappung eintritt. Durch die Einbettung der Diamantnadeln in den Ausnehmungen unter Verwendung einer Einbettmasse wird eine formschlüssige Halterung der Diamantnadeln erreicht, was die Robustheit der Abrichtrolle erhöht.This measure has the advantage that a suitable angle of inclination for the diamond needles can already be predetermined by the configuration of the pocket-shaped recesses, so that the desired overlap occurs with a suitable length of the diamond needles. By embedding the diamond needles in the recesses using an investment material, a form-fitting retention of the diamond needles is achieved, which increases the robustness of the dressing roller.

Bei einer bevorzugten Ausgestaltung dieses Ausführungsbeispiels werden die Ausnehmungen als umlaufende Ringnut ausgebildet.In a preferred embodiment of this embodiment, the recesses are designed as a circumferential annular groove.

Diese Maßnahme hat den Vorteil, daß die umlaufende Ringnut bei der Herstellung der Abrichtrolle mit einfacheren Mitteln ausgebildet werden kann, als dies bei einzelnen Ausnehmungen der Fall ist.This measure has the advantage that the circumferential annular groove can be formed with simpler means in the manufacture of the dressing roller than is the case with individual recesses.

Bei einer bevorzugten Ausgestaltung des erfindungsgemäßen Verfahrens werden die Ausnehmungen mittels Drahterodierens eingebracht.In a preferred embodiment of the method according to the invention, the recesses are made by means of wire EDM.

Diese Maßnahme hat den Vorteil, daß bei Verwendung feiner Erodierdrähte definiert geformte und verteilte Ausnehmungen in den Umfangsflächen eingebracht werden können, deren Lage und Position zudem an die zur Verfügung stehenden Diamantnadeln angepaßt werden können.This measure has the advantage that when fine eroding wires are used, defined shaped and distributed recesses can be made in the peripheral surfaces, the position and position of which can also be adapted to the available diamond needles.

Bei einer weiteren bevorzugten Ausgestaltung des erfindungsgemäßen Verfahrens ist die Einbettmasse ein Sintermaterial.In a further preferred embodiment of the method according to the invention, the investment material is a sintered material.

Diese Maßnahme hat den Vorteil, daß die Diamantnadeln durch einen technologisch einfach beherrschbaren Prozeß sicher in den taschenförmigen Ausnehmungen fixiert werden können.This measure has the advantage that the diamond needles can be securely fixed in the pocket-shaped recesses by a technologically simple process.

Weitere Vorteile ergeben sich aus der Beschreibung und der beigefügten Zeichnung.Further advantages result from the description and the attached drawing.

Es versteht sich, daß die vorstehend genannten und die nachstehend noch zu erläuternden Merkmale nicht nur in der jeweils angegebenen Kombination sondern auch in anderen Kombinationen oder in Alleinstellung verwendbar sind, ohne den Rahmen der vorliegenden Erfindung zu verlassen.It goes without saying that the features mentioned above and those yet to be explained below not only in the respectively specified combination but also in other combinations or can be used alone without departing from the scope of the present invention.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird in der nachfolgenden Beschreibung näher erläutert. Es zeigen:

  • Fig. 1 eine Seitenansicht, abgebrochen, eines Umfangsabschnittes einer erfindungsgemäßen Abrichtrolle in starker Vergrößerung;
  • Fig. 2 eine Frontalansicht der Anordnung gemäß Fig. 1;
  • Fig. 3 einen Ausschnitt in noch weiter vergrößertem Maßstab und im Schnitt zur Erläuterung einer Ausführungsform des erfindungsgemäßen Verfahrens;
  • Fig. 4 eine Darstellung, ähnlich Fig. 3, jedoch für einen weiteren Verfahrensschritt.
An embodiment of the invention is shown in the drawing and is explained in more detail in the following description. Show it:
  • Figure 1 is a side view, broken away, of a peripheral portion of a dressing roller according to the invention in a large magnification.
  • FIG. 2 shows a front view of the arrangement according to FIG. 1;
  • 3 shows a detail on an even larger scale and in section to explain an embodiment of the method according to the invention;
  • Fig. 4 is an illustration, similar to Fig. 3, but for a further process step.

In Fig. 1 bezeichnet 10 insgesamt eine Abrichtrolle, wie sie zum Wiederaufarbeiten verschlissener Schleifscheiben verwendet wird.In FIG. 1, 10 designates a dressing roller as it is used to recondition worn grinding wheels.

Die Abrichtrolle 10 ist von rotationssymmetrischer Gestalt und verfügt über zwei radiale Stirnseiten 11. Am Umfang ist sie mit zwei konischen Umfangsflächen 12, 13 versehen, die sich etwa in der Längsmittelebene der Abrichtrolle 10 entlang einer äußeren Umfangslinie 14 schneiden.The dressing roller 10 is of rotationally symmetrical shape and has two radial end faces 11. On the circumference it is provided with two conical peripheral surfaces 12, 13 which intersect approximately in the longitudinal center plane of the dressing roller 10 along an outer circumferential line 14.

Die Abrichtrolle 10 ist auf ihrer in Fig. 1 rechten konischen Umfangsfläche 12 mit Diamantnadeln 15a, 15b, 15c ... versehen und in spiegelsymmetrischer Weise sind auf der zweiten konischen Umfangsfläche 13 Diamantnadeln 16a, 16b, 16c ... angeordnet.The dressing roller 10 is provided on its right-hand conical peripheral surface 12 in FIG. 1 with diamond needles 15a, 15b, 15c ... and in a mirror-symmetrical manner 13 diamond needles 16a, 16b, 16c ... are arranged on the second conical peripheral surface.

Die Anordnung der Diamantnadeln 15 ... und 16 ... ist so gewählt, daß sie schräg aus den Umfangsflächen 12, 13 vorstehen und mit den freien Enden 17, 18 bis jeweils oberhalb der anderen Umfangsfläche 13, 12 vorstehen. Auf diese Weise ergibt sich eine reißverschlußartige Anordnung, bei der sich die freien Enden 17, 18 um einen Betrag x überlappen.The arrangement of the diamond needles 15 ... and 16 ... is selected so that they protrude obliquely from the circumferential surfaces 12, 13 and protrude with the free ends 17, 18 each above the other circumferential surface 13, 12. This results in a zipper-like arrangement in which the free ends 17, 18 overlap by an amount x.

Geht man von einer üblichen Umfangsgeschwindigkeit einer Schleifscheibe von 45 m/s und einem Schleifscheibendurchmesser von 600 mm aus, so ergibt sich bei einer Vorschubgeschwindigkeit einer Abrichtrolle von beispielsweise 400 mm/min und theoretisch punktförmiger Anlage der Abrichtrolle an der Schleifscheibe eine Steigung der spiralförmigen Abrichtrille in der Größenordnung von 0,3 mm.If one assumes a normal peripheral speed of a grinding wheel of 45 m / s and a grinding wheel diameter of 600 mm, then with a feed speed of a dressing roller of, for example, 400 mm / min and theoretically punctiform contact of the dressing roller with the grinding wheel, there is an increase in the spiral-shaped dressing groove in of the order of 0.3 mm.

Diese Steigung ist zu berücksichtigen, wenn man an der Abrichtrolle 10 den Betrag x der Überlappung einstellt, damit bei einer gegebenen Schleifscheibengeometrie und gegebenen Daten für Umfangsgeschwindigkeit bzw. Drehzahl der Schleifscheibe sowie bei gegebener Vorschubgeschwindigkeit der Abrichtrolle in axialer Richtung ein streifenförmiger Eingriffsbereich der überlappenden freien Enden 17, 18 an der Schleifscheibe entsteht, der keine unabgerichteten Oberflächenbereiche freiläßt.This slope must be taken into account when setting the amount x of the overlap on the dressing roller 10, so that for a given grinding wheel geometry and given data for the peripheral speed or speed of the grinding wheel and for a given feed speed of the dressing roller in the axial direction, a strip-shaped engagement area of the overlapping free ends 17, 18 arises on the grinding wheel, which does not leave any unadjusted surface areas.

In den Fig. 3 und 4 sind zwei Phasenbilder dargestellt, um zu erläutern, wie eine erfindungsgemäße Abrichtrolle 10 hergestellt werden kann.3 and 4, two phase images are shown to explain how a dressing roller 10 according to the invention can be produced.

Man geht dabei aus von einem Rohling einer Abrichtrolle 10 aus z. B. metallischem Werkstoff, der an seinem Umfang mit den konischen Umfangsflächen 12, 13 versehen ist, die sich entlang der Umfangslinie 14 schneiden.One starts from a blank of a dressing roll 10 from z. B. metallic material, which is provided on its circumference with the conical peripheral surfaces 12, 13 which intersect along the circumferential line 14.

Mittels eines geeigneten Werkzeuges, vorzugsweise mittels eines Erodierdrahtes 21, werden nun taschenförmige Ausnehmungen 20 in die Umfangsflächen 12, 13 in der Nähe der Umfangslinie 14 eingebracht. Diese taschenförmigen Ausnehmungen 20 verlaufen im wesentlichen in axialer Richtung, können aber auch leicht zur axialen Richtung hin angestellt sein.Using a suitable tool, preferably by means of an eroding wire 21, pocket-shaped recesses 20 are now made in the peripheral surfaces 12, 13 in the vicinity of the peripheral line 14. These pocket-shaped recesses 20 run essentially in the axial direction, but can also be set slightly towards the axial direction.

In den Fig. 1 bis 4 ist mit 20a angedeutet, daß statt einzelner Ausnehmungen 20 auch eine durchgehende umlaufende Ringnut vorgesehen werden kann, in die die Diamantnadeln 15, über den Umfang verteilt, eingelegt werden.1 to 4 it is indicated by 20a that instead of individual recesses 20, a continuous circumferential annular groove can also be provided, into which the diamond needles 15, distributed over the circumference, are inserted.

Wie Fig. 4 zeigt, wird die Formgebung der taschenförmigen Ausnehmungen 20 so eingestellt, daß die Diamantnadeln 15 mit ihrem unteren Ende 22 in der Ausnehmung 20 liegen und dort mit einer Einbettmasse 23 derart überdeckt werden können, daß die Diamantnadeln 15 über einen beträchtlichen Teil ihrer Länge formschlüssig in den Ausnehmungen 20 mit Einbettmasse 23 liegen.As shown in Fig. 4, the shape of the pocket-shaped recesses 20 is set so that the diamond needles 15 lie with their lower end 22 in the recess 20 and can be covered there with an investment material 23 such that the diamond needles 15 over a considerable part of them Length form fit in the recesses 20 with investment material 23.

Im Falle, daß eine umlaufende Ringnut 20a anstelle einzelner taschenförmiger Ausnehmungen 20 gewählt wird, füllt die Einbettmasse 23 die gesamte Ringnut 20a aus, wie in den Fig. 1 und 2 schraffiert angedeutet ist. Die Einbettmasse 23 kann dabei, wie Fig. 4 deutlich zeigt, bis über den Rand der Ringnut 20a bzw. der Ausnehmungen 20 hinaus die Umfangsflächen 12 bzw. 13 teilweise überdecken. Die Einbettmasse 23 kann sich darüber hinaus bis nahe an die Spitze der Diamantnadeln 15 hin erstrecken, solange nur eine genügend lange Spitze aus der Einbettmasse 23 hervorsteht.In the event that a circumferential annular groove 20a is selected instead of individual pocket-shaped recesses 20, the investment material 23 fills the entire annular groove 20a, as indicated by hatching in FIGS. 1 and 2. The investment material 23 can, as FIG. 4 clearly shows, partially cover the peripheral surfaces 12 and 13 beyond the edge of the annular groove 20a or the recesses 20. The investment material 23 can over it extend out to close to the tip of the diamond needles 15 as long as only a sufficiently long tip protrudes from the investment material 23.

Als Einbettmasse 23 kann entweder eine reduzierbare Metallpaste verwendet werden, so daß die Diamantnadeln 15 nach dem Reduzieren von der metallischen Einbettmasse 23 in den Ausnehmungen 20 gehalten werden, man kann aber auch ein Sintermaterial verwenden und durch entsprechende Wärmebehandlung die Diamantnadeln 15 in den Ausnehmungen 20 einsintern.Either a reducible metal paste can be used as investment material 23, so that the diamond needles 15 are held in the recesses 20 after the reduction of the metallic investment compound 23, but a sintered material can also be used and the diamond needles 15 can be sintered into the recesses 20 by appropriate heat treatment .

Claims (6)

1. A dressing roll having a circumferential peripheral surface (12, 13) being provided with diamonds, characterized in that the diamonds are configured as diamond needles (15, 16) protruding from the peripheral surface (12, 13) in an oblique configuration and overlapping each other with their free ends (17, 18) in a peripheral direction.
2. The dressing roll of claim 1, characterized in that the diamond needles (15, 16) are arranged on two conical peripheral surfaces (12, 13) intersecting along an outer peripheral line (14), and that the diamond needles (15, 16), protruding from one peripheral surface (12, 13) extend with their free ends (17, 18) over to the respective other peripheral surface (13, 12).
3. A method of manufacturing a dressing roll according to claim 1 or 2, characterized in that pocket-shaped cavities (20) are formed in the peripheral surface (12, 13), and that the diamond needles (15, 16) are inserted into the cavities (20) with their lower ends (22) and are fixed therein by means of a embedding compound (23).
4. The method of claim 3, characterized in that the cavities (20) are formed as a peripheral annular groove (20a).
5. The method of claim 3 or 4, characterized in that the cavities (20) are formed by means of wire erosion (21).
6. The method of any of claims 3 or 5, characterized in that the embedding compound (23) is a sinter material.
EP88121443A 1987-12-23 1988-12-22 Dressing roll and its manufacturing method Expired - Lifetime EP0321969B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3743813 1987-12-23
DE3743813 1987-12-23
DE3811783 1988-04-08
DE3811783A DE3811783C1 (en) 1987-12-23 1988-04-08

Publications (3)

Publication Number Publication Date
EP0321969A2 EP0321969A2 (en) 1989-06-28
EP0321969A3 EP0321969A3 (en) 1990-06-13
EP0321969B1 true EP0321969B1 (en) 1992-03-11

Family

ID=25863161

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88121443A Expired - Lifetime EP0321969B1 (en) 1987-12-23 1988-12-22 Dressing roll and its manufacturing method

Country Status (4)

Country Link
US (1) US4892082A (en)
EP (1) EP0321969B1 (en)
JP (1) JPH01216773A (en)
DE (2) DE3811783C1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03149182A (en) * 1989-10-31 1991-06-25 Toyoda Mach Works Ltd Diamond dresser
EP0558869A1 (en) * 1992-03-02 1993-09-08 Gebrüder Sulzer Aktiengesellschaft Object with an abrasive surface and method of manufacturing the same
DE19849259C1 (en) * 1998-10-26 2000-07-06 Kaiser Michael Diamond leveling disk comprises rotation-symmetrical body and has irregularly formed diamond granules on its peripheral surface and-or its one face side
US6308700B1 (en) * 1999-10-25 2001-10-30 Dr Kaiser Co. Process and manufacturing of a rotary diamond dresser for trueing and dressing of industrial grinding wheels

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE311079C (en) * 1917-03-21 1919-02-24 Otto Schmidts Patent Herkulessteine Gmbh Sharpening roller for wooden sharpening stones
US2380451A (en) * 1943-04-19 1945-07-31 Koebel Diamond Tool Company Disk diamond dressing tool
US3154064A (en) * 1962-04-02 1964-10-27 Koebel Diamond Tool Co Multiple point diamond tool
DE1968017U (en) * 1967-05-20 1967-09-07 Winter & Sohn Ernst DIAMOND TOOL, ESPECIALLY FOR DRESSING GRINDING WHEELS.
GB1449720A (en) * 1974-12-07 1976-09-15 Vnii Po Stroitelstvu Magistr Rotating cutting tool
DE3016740A1 (en) * 1980-04-30 1981-11-05 Lach-Spezial-Werkzeuge Gmbh, 6450 Hanau DRESSING TOOL
ATE39874T1 (en) * 1983-02-22 1989-01-15 Winter & Sohn Ernst DIAMOND FORM DRESSING ROLL FOR DRESSING GRINDING WHEELS.

Also Published As

Publication number Publication date
EP0321969A3 (en) 1990-06-13
EP0321969A2 (en) 1989-06-28
JPH01216773A (en) 1989-08-30
DE3811783C1 (en) 1989-09-14
US4892082A (en) 1990-01-09
DE3869096D1 (en) 1992-04-16

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