EP3254806B1 - Method for producing a dressing tool for a grinding tool - Google Patents

Method for producing a dressing tool for a grinding tool Download PDF

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Publication number
EP3254806B1
EP3254806B1 EP17000868.4A EP17000868A EP3254806B1 EP 3254806 B1 EP3254806 B1 EP 3254806B1 EP 17000868 A EP17000868 A EP 17000868A EP 3254806 B1 EP3254806 B1 EP 3254806B1
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European Patent Office
Prior art keywords
support element
dressing tool
rings
recesses
cross
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EP17000868.4A
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German (de)
French (fr)
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EP3254806A1 (en
Inventor
Friedrich Schmück
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Niles Werkzeugmaschinen GmbH
Kapp Werkzeugmaschinen GmbH
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Niles Werkzeugmaschinen GmbH
Kapp Werkzeugmaschinen GmbH
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B53/00—Devices or means for dressing or conditioning abrasive surfaces
    • B24B53/06—Devices or means for dressing or conditioning abrasive surfaces of profiled abrasive wheels
    • B24B53/075—Devices or means for dressing or conditioning abrasive surfaces of profiled abrasive wheels for workpieces having a grooved profile, e.g. gears, splined shafts, threads, worms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B53/00—Devices or means for dressing or conditioning abrasive surfaces
    • B24B53/06—Devices or means for dressing or conditioning abrasive surfaces of profiled abrasive wheels
    • B24B53/08—Devices or means for dressing or conditioning abrasive surfaces of profiled abrasive wheels controlled by information means, e.g. patterns, templets, punched tapes or the like
    • B24B53/085—Devices or means for dressing or conditioning abrasive surfaces of profiled abrasive wheels controlled by information means, e.g. patterns, templets, punched tapes or the like for workpieces having a grooved profile, e.g. gears, splined shafts, threads, worms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B53/00—Devices or means for dressing or conditioning abrasive surfaces
    • B24B53/12—Dressing tools; Holders therefor
    • B24B53/14—Dressing tools equipped with rotary rollers or cutters; Holders therefor
    • 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
    • B24D18/0018—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for by electrolytic deposition
    • 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

Description

Die Erfindung betrifft ein Verfahren zum Herstellen eines Abrichtwerkzeugs für ein Schleifwerkzeug, vorzugsweise für eine Schleifschnecke, nach dem Oberbegriff des Anspruchs 1.The invention relates to a method for producing a dressing tool for a grinding tool, preferably for a grinding worm, according to the preamble of claim 1.

Bei der Bearbeitung insbesondere von Verzahnungen mit wälzenden Werkzeugen wird in der Regel eine abrichtbare mehrgängige Schleifschnecke eingesetzt. Das Abrichten der Schleifschnecke geschieht wiederum mit einer ein- oder mehrrilligen Abrichtrolle. Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung eines solchen Abrichtwerkzeugs. Bevorzugt sind hierbei mehrrillige Vollprofilrollen vorgesehen, die zum effizienten Abrichten von Schleifschnecken eingesetzt werden können.A dressable multi-start grinding worm is generally used when machining gears, in particular, with rolling tools. The grinding worm is dressed with a single or multi-groove dressing roller. The present invention relates to a method for producing such a dressing tool. Multi-groove full profile rollers are preferably provided here, which can be used for the efficient dressing of grinding worms.

Ein Verfahren der eingangs genannten Art ist aus der CH 684 249 A5 bekannt. Als Stützelement kommt hier ein massiver Werkzeugkern aus Stahl zum Einsatz. Eine andere Lösung ist in der DE 101 56 661 A1 beschrieben. Ein ähnliches Verfahren offenbart die JP H04 244 377 A . Andere Lösungen zeigen die US 2002/0182401 A1 , die US 2014/0273773 A1 , die US 2014/0302757 A1 , die WO 2007/000831 A1 und die US 6 200 360 B1 . A method of the type mentioned is from CH 684 249 A5 known. A solid steel tool core is used as a support element. Another solution is in the DE 101 56 661 A1 described. A similar process is disclosed in JP H04 244 377 A . Other solutions show that US 2002/0182401 A1 that US 2014/0273773 A1 that US 2014/0302757 A1 that WO 2007/000831 A1 and the US 6 200 360 B1 .

Um eine solche gattungsgemäße Vollprofilrolle herzustellen, wird nach einem anderen Verfahren ein Formring hergestellt, der mit dem werkstückspezifischen Profil versehen ist. Auf diesem Profil scheidet sich zumeist in einem galvanischen Prozess eine Diamant- bzw. Nickelschicht ab, die - auf einen Kern geklebt - nach diversen weiteren Prozessschritten letztlich das eingangs genannte Abrichtwerkzeug ergibt.In order to produce such a full-profile roll of the generic type, a shaped ring is produced by another method, which is provided with the workpiece-specific profile. A diamond or nickel layer is usually deposited on this profile in a galvanic process, which - glued to a core - ultimately results in the dressing tool mentioned at the beginning after various other process steps.

Der Herstellungsprozess ist dabei sehr aufwändig. Häufig befindet sich bereits für die Erzeugung der Diamant- bzw. Nickelschicht der Formring bis zu drei Wochen in einem galvanischen Bad.The manufacturing process is very complex. Often, the form ring is already in a galvanic bath for up to three weeks for the production of the diamond or nickel layer.

Dabei hat sich ergeben, dass das so erzeugte Profil des Abrichtwerkzeugs mitunter Fehler aufweist, die auf diverse Ursachen zurückgeführt werden können. Namentlich "klappen" die äußeren Flanken des Profils nach außen weg, was auf Spannungen im Gefüge zurückgeführt wird. Weiterhin machen sich auch thermische Spannungen bemerkbar, die zu Fehlern im Profil führen.It has been found that the profile of the dressing tool generated in this way sometimes has errors that can be traced back to various causes. Specifically, the outer flanks of the profile "fold out", which is attributed to tensions in the structure. Furthermore, thermal stresses are also noticeable, which lead to errors in the profile.

Somit ergibt sich, dass durch Verformungen der Nickelschicht, insbesondere hervorgerufen durch innere Spannungen und mechanische Belastung, die Genauigkeit des Profils beeinträchtigt wird. In nachteilhafter Weise ist somit vor der Verwendung des Abrichtwerkzeugs eine entsprechende Nacharbeit notwendig, um die Fehler zu eliminieren.It follows that deformations of the nickel layer, in particular caused by internal stresses and mechanical loads, impair the accuracy of the profile. In a disadvantageous manner, corresponding rework is therefore necessary before the dressing tool is used in order to eliminate the errors.

Der Erfindung liegt daher die Aufgabe zugrunde, ein gattungsgemäßes Verfahren so auszubilden, dass das Profil des hergestellten Abrichtwerkzeugs möglichst gut der idealen Kontur entspricht; somit sollen Profilfehler am Abrichtwerkzeug eliminiert werden. Insbesondere soll sichergestellt werden, dass die Verformung der Nickelschicht möglichst gering bleibt. Demgemäß soll das Abrichtwerkzeug eine möglichst präzise Geometrie haben.The invention is therefore based on the object of developing a generic method in such a way that the profile of the dressing tool produced corresponds as closely as possible to the ideal contour; this is to eliminate profile errors on the dressing tool. In particular, it should be ensured that the deformation of the nickel layer remains as small as possible. Accordingly, the dressing tool should have the most precise possible geometry.

Die Lösung dieser Aufgabe durch die Erfindung sieht ein Verfahren vor, bei dem erfindungsgemäß vorgesehen ist, dass als Stützelement eine offene Gitterstruktur mit Öffnungen verwendet wird, so dass die radial innenliegenden Fläche nicht durch das Stützelement radial verschlossen wird.The solution to this problem by the invention provides a method in which the invention provides that an open lattice structure with openings is used as the support element, so that the radially inner surface is not closed radially by the support element.

Vielmehr wird somit der Austausch des für die Herstellung der Beschichtung benötigten Elektrolyts durch das Stützelement nicht bzw. kaum behindert.Rather, the replacement of the electrolyte required for the production of the coating by the support element is not or hardly hindered.

Das Stützelement erstreckt sich dabei bevorzugt über eine Breite, die zwischen 90 % und 100 % der Breite des Abrichtwerkzeugs entspricht.The support element preferably extends over a width that corresponds to between 90% and 100% of the width of the dressing tool.

Als Stützelement wird vorzugsweise eine Struktur verwendet, die eine Anzahl Ringe aufweist, die in Umfangsrichtung der radial innenliegenden Fläche verlaufen, wobei die Ringe mittels Querstreben miteinander verbunden sind, wobei die Querstreben in Achsrichtung des Abrichtwerkzeugs verlaufen. Die Ringe und/oder die Querstreben bestehen dabei bevorzugt aus Metall. Die Ringe und/oder die Querstreben weisen bevorzugt einen kreisförmigen Querschnitt auf. Insofern kann ein Draht mit kreisförmigem Querschnitt als Basismaterial für die Herstellung des Stützelements verwendet werden.A structure is preferably used as the support element which has a number of rings which run in the circumferential direction of the radially inner surface, the rings being connected to one another by means of cross struts, the cross struts running in the axial direction of the dressing tool. The rings and / or the cross struts are preferably made of metal. The rings and / or the cross struts preferably have a circular cross section. In this respect, a wire with a circular cross section can be used as the base material for the production of the support element.

Die Anzahl der Ringe ergibt sich bevorzugt aus der Anzahl der Vorsprünge plus Eins. In diesem Falle befindet sich also ein Ring jeweils an beiden Seiten jeder Ausnehmung des Formrings.The number of rings preferably results from the number of projections plus one. In this case there is a ring on both sides of each recess of the shaped ring.

Die Ringe und die Querstreben können vor ihrer Verwendung bzw. vor dem Einbringen in den Formring miteinander stoffschlüssig verbunden werden; hierbei ist insbesondere an eine Verschweißung oder Verlötung gedacht.The rings and the cross struts can be cohesively connected to one another before they are used or before they are introduced into the shaped ring; this is particularly thought of welding or soldering.

Der Formring kann während der Durchführung des obigen Schritts c) zumindest zeitweise um seine Achse rotieren. Damit kann bewirkt werden, dass das Abrasivmaterial (insbesondere das Diamantpulver) durch die Zentrifugalkraft so lange in den Ausnehmungen des Formrings gehalten wird, bis es durch den (insbesondere galvanischen) Beschichtungsvorgang an der Oberfläche der Ausnehmung fixiert ist.The form ring can rotate at least temporarily around its axis while performing step c) above. This can cause the abrasive material (in particular the diamond powder) to be held in the recesses of the shaped ring by the centrifugal force until it is fixed to the surface of the recess by the (in particular galvanic) coating process.

Die Entfernung des Formrings gemäß obigem Schritt d) erfolgt bevorzugt durch Zerspanen, insbesondere durch Abdrehen, des Formrings.The removal of the shaped ring according to step d) above is preferably carried out by machining, in particular by turning off, the shaped ring.

Ein Aspekt der vorliegenden Erfindung besteht also darin, während des vorzugsweise galvanisch durchgeführten Beschichtungsprozesses eine Verstrebung (d. h. das Stützelement) in die sich bildende Nickelschicht einzubringen. Diese Verstrebung wirkt einer möglichen Verformung entgegen und verhindert diese. Wie erwähnt, ist eine galvanische Beschichtung (elektrochemische Abscheidung; "galvanisch Nickel") bevorzugt. Generell kann allerdings auch eine chemische Beschichtung vorgesehen werden ("chemisch Nickel"). Auch sind natürlich verschiedene Beschichtungsmaterialien möglich, wobei Nickel bevorzugt ist.One aspect of the present invention thus consists in introducing a strut (i.e. the support element) into the nickel layer that forms during the preferably galvanically carried out coating process. This strut counteracts and prevents possible deformation. As mentioned, a galvanic coating (electrochemical deposition; "galvanic nickel") is preferred. In general, however, a chemical coating can also be provided ("chemical nickel"). Various coating materials are of course also possible, nickel being preferred.

Das Material des Stützelements wird dabei so gewählt, dass es problemlos in die Nickelschicht eingebracht werden kann und sich dabei möglichst wenig verformt. Dabei wird darauf geachtet, dass sich die abgeschiedene galvanische Schicht nicht verformen kann. Das Stützelement wird mit der bereits gegebenenfalls zuvor (im Rahmen einer ersten Fixierung des Abrasivmaterials im Formring) aufgebrachten galvanischen Schicht, die die Abrasivkörper bereits enthält, galvanisch verbunden.The material of the support element is chosen so that it can be easily inserted into the nickel layer and deforms as little as possible. Care is taken to ensure that the deposited galvanic layer cannot deform. The support element is galvanically connected to the galvanic layer, which may already have been applied beforehand (as part of a first fixation of the abrasive material in the molded ring) and which already contains the abrasive body.

Demgemäß wird also die Ausgestaltung der Stützelements so gewählt, dass es einer gegebenenfalls wirkenden Verformungsspannung entgegenwirkt.Accordingly, the design of the support element is selected so that it counteracts any deformation stress that may be acting.

Dabei ist darauf zu achten, dass das Stützelement so ausgestaltet bzw. so ausgelegt ist, dass eine gleichmäßige Abscheidung der galvanischen Schicht auch nach dem Einbringen des Stützelements erreicht werden kann. Das Stützelement darf namentlich keine Abschirmung bilden; der Austausch des Elektrolyts muss gewährleistet bleiben.It is important to ensure that the support element is designed or designed in such a way that a uniform deposition of the galvanic layer can also be achieved after the support element has been introduced. The support element may not form a shield; the exchange of the electrolyte must be guaranteed.

Das Stützelement kann dabei vor oder nach dem Diamantieren eingebracht werden (d. h. vor oder nach der Einbringung des Abrasivmaterials auf die Oberfläche der oben genannten Ausnehmungen).The support element can be introduced before or after diamond coating (i.e. before or after the abrasive material is introduced onto the surface of the above-mentioned recesses).

Bei der vorgeschlagenen Ausgestaltung des Stützelements ist sichergestellt, dass das Stützelement beim Galvanisieren keine Veränderung der Korndichte (Anzahl der Körner auf der Fläche) und keine Kornfehlstellen bewirkt.The proposed configuration of the support element ensures that the support element does not cause any change in the grain density (number of grains on the surface) and no grain defects during electroplating.

Die vorgeschlagene Erfindung wird insbesondere bei Vollprofilrollen eingesetzt bzw. bei der galvanischen Negativbeschichtung.The proposed invention is used in particular in the case of solid profile rolls or in the case of galvanic negative coating.

In den Zeichnungen ist ein Ausführungsbeispiel der Erfindung dargestellt. Es zeigen:

Fig. 1
im teilweisen Radialschnitt die Seitenansicht eines Abrichtwerkzeugs in Form einer dreirilligen Vollprofilrolle,
Fig. 2
im Radialschnitt einen Formring mit dem mittels diesem hergestellten Abrichtwerkzeug und
Fig. 3
in perspektivischer Darstellung einen Teil eines Stützelements, das in das Abrichtwerkzeug eingebettet ist.
In the drawings, an embodiment of the invention is shown. Show it:
Fig. 1
in partial radial section the side view of a dressing tool in the form of a three-grooved full profile roller,
Fig. 2
in radial section a form ring with the dressing tool produced by means of this
Fig. 3
a perspective view of part of a support element which is embedded in the dressing tool.

In Figur 1 ist ein Abrichtwerkzeug 1 in Form einer Abrichtrolle dargestellt. Das Abrichtwerkzeug 1 besteht aus einem rotationssymmetrischen Bauteil, das eine Achsrichtung a aufweist sowie eine radiale Richtung r. In axialer Richtung weist das Abrichtwerkzeug 1 eine Breite B auf.In Figure 1 a dressing tool 1 is shown in the form of a dressing roller. The dressing tool 1 consists of a rotationally symmetrical component which has an axial direction a and a radial direction r. The dressing tool 1 has a width B in the axial direction.

Im Ausführungsbeispiel hat das Abrichtwerkzeug 1 drei ringförmig ausgebildete, in Umfangsrichtung umlaufende Vorsprünge 2, die sich in radiale Richtung r erstrecken. Diese Vorsprünge 2 sind mit Abrasivmaterial 6 in Form von Diamantpulver (entsprechender Körnung; abhängig vom abzurichtenden Schleifwerkzeug) versehen, so dass mit dem Abrichtwerkzeug 1 eine Schleifschnecke abgerichtet werden kann. Dieses Verfahren ist als solches bekannt und muss hier nicht näher erläutert werden.In the exemplary embodiment, the dressing tool 1 has three annular projections 2 which run in the circumferential direction and extend in the radial direction r. These projections 2 are provided with abrasive material 6 in the form of diamond powder (corresponding grain size; depending on the grinding tool to be dressed), so that a grinding worm can be dressed with the dressing tool 1. This method is known as such and need not be explained in more detail here.

Die Herstellung eines solchen Abrichtwerkzeugs 1 ist in Figur 2 illustriert. Zentrales Element für die Herstellung ist ein Formring 3, der eine im wesentlichen hohlzylindrische Gestalt aufweist. An einer radial innen liegenden Fläche 4 des Formrings 3 sind Ausnehmungen 5 eingearbeitet (d. h. mit hoher Genauigkeit eingeschliffen), die deckungsgleich (kongruent) mit den Vorsprüngen 2 ausgebildet sind (Negativverfahren).The manufacture of such a dressing tool 1 is shown in Figure 2 illustrated. The central element for the production is a shaped ring 3, which has an essentially hollow cylindrical shape. On a radially inner surface 4 of the shaped ring 3, recesses 5 are machined (ie ground in with high accuracy), which are congruent with the projections 2 (negative method).

In den Ausnehmungen 5 wird bei der Herstellung des Abrichtwerkzeugs 1 zunächst das Abrasivmaterial 6 (Diamantpulver) platziert, so dass die Oberfläche 8 der Ausnehmungen 5 mit diesem Abrasivmaterial 6 zumindest teilweise bedeckt bzw. besetzt ist.The abrasive material 6 (diamond powder) is first placed in the recesses 5 during the manufacture of the dressing tool 1, so that the surface 8 of the recesses 5 is at least partially covered or covered with this abrasive material 6.

Anschließend erfolgt die Erzeugung einer galvanischen Beschichtung 7, so dass das Abrasivmaterial 6 an der Oberfläche 8 der Ausnehmung 5 fixiert wird und für den späteren Abrichtvorgang zur Verfügung steht. In Figur 2 ist ein Zustand zu sehen, bei dem der galvanische Beschichtungsvorgang bereits weitgehend abgeschlossen ist, d. h. der Bereich der Ausnehmungen 5 hat sich bereits mit dem Material der Beschichtung gefüllt und darüber hinaus einen radial nach innen reichenden Bereich erfasst.A galvanic coating 7 is then produced, so that the abrasive material 6 is fixed on the surface 8 of the recess 5 and is available for the later dressing process. In Figure 2 a state can be seen in which the galvanic coating process has already largely been completed, ie the area of the recesses 5 has already been filled with the material of the coating and, moreover, has detected a region which extends radially inwards.

Wesentlich ist, dass vor der Ausbildung der kompletten Beschichtung 7 ein Stützelement 9 in den Formring 3 eingebracht wurde, der durch den galvanischen Beschichtungsvorgang in das sich bildende Abrichtwerkzeug 1 zumindest teilweise integriert wurde. In Figur 2 ist zu erkennen, dass das Stützelement 9 komplett in das Beschichtungsmaterial integriert wurde, d.h. von diesem umgeben ist. Somit ist also das Stützelement stoffschlüssig mit dem entstehenden Abrichtwerkzeug 1 verbunden. Möglich ist es allerdings auch, dass nach Abschluss des Beschichtungsprozesses das Stützelement 9 nicht vollständig vom Beschichtungsmaterial umgeben ist.It is essential that, before the complete coating 7 is formed, a support element 9 was introduced into the mold ring 3, which was at least partially integrated into the dressing tool 1 that was formed by the galvanic coating process. In Figure 2 it can be seen that the support element 9 has been completely integrated into the coating material, ie is surrounded by it. Thus, the support element is integrally connected to the dressing tool 1 being produced. However, it is also possible that the support element 9 is not completely surrounded by the coating material after the coating process has been completed.

Nachdem der in Figur 2 dargestellte Status erreicht ist, wird der Formring 3 entfernt, was durch einen spanenden Bearbeitungsvorgang erfolgen kann. Somit steht das Abrichtwerkzeug 1 zu seiner bestimmungsgemäßen Verwendung zur Verfügung.After the in Figure 2 shown status is reached, the mold ring 3 is removed, which can be done by a machining operation. The dressing tool 1 is thus available for its intended use.

In Figur 3 ist das zum Einsatz kommende Stützelemente 9 noch einmal in perspektivischer Darstellung zu erkennen. Hier ist zu sehen, dass das Stützelement 9 eine Breite b aufweist, die im wesentlichen der Breite des Abrichtwerkzeugs 1 entspricht bzw. geringfügig kleiner als besagte Breite B ist.In Figure 3 the supporting elements 9 used can be seen again in a perspective view. It can be seen here that the support element 9 has a width b which essentially corresponds to the width of the dressing tool 1 or is slightly smaller than said width B.

Das Stützelement 9 besteht aus mehreren (im Ausführungsbeispiel: aus vier) Ringen 11, die durch äquidistant über den Umfang verteilt angeordnete Querstreben 12 miteinander verbunden sind (insbesondere: verlötet). Bevorzugt sind 20 bis 80 Querstreben 12 über den Umfang. Somit ergeben sich, was in Figur 3 gesehen werden kann, Öffnungen 10, die es ermöglichen, dass während des Beschichtungsvorgangs Elektrolyt durch das Stützelement 9 hindurch treten kann und somit durch das Stützelement 9 der Galvanisierungsvorgang nicht bzw. kaum behindert wird.The support element 9 consists of several (in the exemplary embodiment: four) rings 11 which are connected to one another (in particular: soldered) by cross struts 12 which are arranged equidistantly around the circumference. 20 to 80 cross struts 12 are preferred over the circumference. So what results in Figure 3 can be seen, openings 10, which make it possible for electrolyte to pass through the support element 9 during the coating process and thus the plating process is not or hardly hindered by the support element 9.

Im vorliegenden Ausführungsbeispiel ist also das Stützelement 9 (bzw. Stützgitter) als gitterförmige Struktur aus Längs- und Querstreben gestaltet, die in den Formring gespannt wird. Die Maße der Gitterstruktur sind der zu unterstützenden Kontur angepasst. Das Stützelement wird dabei so im Formring positioniert, dass die Gesamtbreite der Rillen (Ausnehmungen) abgedeckt wird und das Stützelement komplett in die Nickelschicht eingebettet wird.In the present exemplary embodiment, the support element 9 (or support grid) is designed as a grid-shaped structure made of longitudinal and transverse struts, which is clamped into the molded ring. The dimensions of the grid structure are adapted to the contour to be supported. The support element is positioned in the form ring in such a way that the total width of the grooves (recesses) is covered and the support element is completely embedded in the nickel layer.

Es sei bemerkt, dass der Beschichtungsprozess, der in der Regel als galvanischer Prozess durchgeführt wird, vorteilhaft in zwei Stufen erfolgt:
In einer ersten Stufe wird in einer ersten Arbeitsstation durch ein erstes Beschichten mit Nickel das sich in den Ausnehmungen 5 befindliche Abrasivmaterial 6 fixiert, wobei der Formring 3 rotiert, so dass das Abrasivmaterial 6 durch die Zentrifugalkraft im Bereich der Oberfläche 8 der Ausnehmung 5 gehalten wird.It should be noted that the coating process, which is usually carried out as a galvanic process, advantageously takes place in two stages:
In a first stage, the abrasive material 6 located in the recesses 5 is fixed in a first work station by a first coating with nickel, the molding ring 3 rotating, so that the abrasive material 6 is held in the region of the surface 8 of the recess 5 by the centrifugal force .

Ist das Abrasivmaterial 6 dann insoweit fixiert, kann in einer zweiten Arbeitsstation die Beschichtung 7 im schlussendlich gewünschten Umfang durchgeführt werden. Bevor dies erfolgt, wird allerdings das Stützelement 9 in den Formring 3 eingebracht und durch den Beschichtungsprozess stoffschlüssig eingebunden.If the abrasive material 6 is then fixed in this respect, the coating 7 can finally be carried out in a second work station to the extent desired. Before this takes place, however, the support element 9 is introduced into the mold ring 3 and integrally bonded through the coating process.

Bezugszeichenliste:Reference symbol list:

11
AbrichtwerkzeugDressing tool
22nd
Vorsprunghead Start
33rd
FormringShaped ring
44th
radial innenliegende Flächeradially inner surface
55
AusnehmungRecess
66
Abrasivmaterial (Diamantpulver)Abrasive material (diamond powder)
77
BeschichtungCoating
88th
Oberfläche der AusnehmungSurface of the recess
99
StützelementSupport element
1010th
Öffnung im StützelementOpening in the support element
1111
Ringring
1212th
QuerstrebeCross strut
rr
radiale Richtungradial direction
aa
Achsrichtung des AbrichtwerkzeugsAxial direction of the dressing tool
bb
Breite des StützelementsWidth of the support element
BB
Breite des AbrichtwerkzeugsWidth of the dressing tool

Claims (9)

  1. Method for the production of a dressing tool (1) for a grinding tool, preferably for a grinding worm, wherein the dressing tool (1) comprises at least one, preferably ring-shaped designed projection (2) which extends radially (r), wherein the method comprises the steps:
    a) Production of a shaped ring (3), which comprises a number of recesses (5) at a radial inner area (4) which number corresponds to the number of projections (2) and which recesses (5) are designed congruent to the projections (2);
    b) Placing of abrasive material (6), especially of diamond powder, in the recesses (5);
    c) Creation of a chemical or electro-chemical coating (7) in the recesses (5) so that the abrasive material (6) is fixed in the region of the surface (8) of the recesses (5);
    d) Removal of the shaped ring (3), to obtain the so arose dressing tool (1);
    wherein a support element (9) is placed prior or during step b) or prior or during step c) in the region of the radial inner area (4) which support element (9) is material joined integrally during step c) at least partially with the arising dressing tool (1) by the coating (7),
    characterized in that
    as support element (9) an open lattice structure with openings (10) is used so that especially the radial inner area (4) is not radially closed by the support element (9).
  2. Method according to claim 1, characterized in that the support element (9) extends along a width (b) which corresponds between 90 % and 100 % of the width (B) of the dressing tool (1).
  3. Method according to claim 1 or 2, characterized in that as support element (9) a structure is used which comprises a plurality of rings (11) which run in circumferential direction of the radial inner area (4), wherein the rings (11) are connected by means of cross-beams (12), wherein the cross-beams (12) run in axial direction (a) of the dressing tool (1).
  4. Method according to claim 3, characterized in that the rings (11) and/or the cross-beams (12) consist of metal.
  5. Method according to claim 3 or 4, characterized in that the rings (11) and/or the cross-beams (12) comprise a circular cross section.
  6. Method according to one of claims 3 to 5, characterized in that the number of rings (11) is the number of projections (2) plus one.
  7. Method according to one of claims 3 to 6, characterized in that the rings (11) and the cross-beams (12) are connected with another by material bonding, especially by welding or by soldering.
  8. Method according to one of claims 1 to 7, characterized in that the shaped ring (3) rotates around its axis (a) at least temporary during the execution of step c) of claim 1.
  9. Method according to one of claims 1 to 8, characterized in that the removal of the shaped ring (3) according to step d) of claim 1 takes place by machining of the shaped ring (3), especially by turning.
EP17000868.4A 2016-06-08 2017-05-22 Method for producing a dressing tool for a grinding tool Active EP3254806B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102016006951.1A DE102016006951B4 (en) 2016-06-08 2016-06-08 Method for producing a dressing tool for a grinding tool

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EP3254806A1 EP3254806A1 (en) 2017-12-13
EP3254806B1 true EP3254806B1 (en) 2020-04-01

Family

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EP17000868.4A Active EP3254806B1 (en) 2016-06-08 2017-05-22 Method for producing a dressing tool for a grinding tool

Country Status (4)

Country Link
US (1) US10507564B2 (en)
EP (1) EP3254806B1 (en)
CN (1) CN107471126B (en)
DE (1) DE102016006951B4 (en)

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Publication number Priority date Publication date Assignee Title
CH716096B1 (en) * 2019-09-24 2020-11-13 Reishauer Ag Dressing tool and a method for applying hard material particles.

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JPH04244377A (en) 1991-01-29 1992-09-01 Toyoda Mach Works Ltd Manufacture for diamond truing roll
CH684249A5 (en) * 1991-06-04 1994-08-15 Reishauer Ag Method of manufacturing a geometrically accurate negative moulding, use of the method and negative moulding manufactured by the method and tools
CH686171A5 (en) * 1992-12-10 1996-01-31 Reishauer Ag Dressing tool for dressing branch {ngiger, cylindrical grinding worms.
BE1008917A3 (en) 1994-11-16 1996-10-01 Diamant Boart Sa Abrasive tool, cutting or similar and method for manufacturing this tool.
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JP4781358B2 (en) * 2005-06-27 2011-09-28 株式会社アライドマテリアル Diamond rotary dresser for gears and truing and dressing method of gear grinding wheel using the same
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Also Published As

Publication number Publication date
EP3254806A1 (en) 2017-12-13
CN107471126A (en) 2017-12-15
DE102016006951B4 (en) 2018-05-09
DE102016006951A1 (en) 2017-12-14
US10507564B2 (en) 2019-12-17
US20170355063A1 (en) 2017-12-14
CN107471126B (en) 2020-09-22

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