EP3254806A1 - Method for producing a dressing tool for a grinding tool - Google Patents
Method for producing a dressing tool for a grinding tool Download PDFInfo
- Publication number
- EP3254806A1 EP3254806A1 EP17000868.4A EP17000868A EP3254806A1 EP 3254806 A1 EP3254806 A1 EP 3254806A1 EP 17000868 A EP17000868 A EP 17000868A EP 3254806 A1 EP3254806 A1 EP 3254806A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- dressing tool
- recesses
- rings
- support element
- tool
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 238000000576 coating method Methods 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 claims abstract description 23
- 239000011248 coating agent Substances 0.000 claims abstract description 19
- 239000003082 abrasive agent Substances 0.000 claims abstract description 17
- 229910003460 diamond Inorganic materials 0.000 claims abstract description 9
- 239000010432 diamond Substances 0.000 claims abstract description 9
- 239000000843 powder Substances 0.000 claims abstract description 7
- 239000000126 substance Substances 0.000 claims abstract description 5
- 238000003754 machining Methods 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 238000000465 moulding Methods 0.000 abstract description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 24
- 229910052759 nickel Inorganic materials 0.000 description 12
- 239000000463 material Substances 0.000 description 6
- 239000007787 solid Substances 0.000 description 4
- 230000035882 stress Effects 0.000 description 4
- 239000003792 electrolyte Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000004070 electrodeposition Methods 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000005246 galvanizing Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- 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
Definitions
- the invention relates to a method for producing a dressing tool for a grinding tool, preferably for a grinding worm, wherein the dressing tool has at least one, preferably annular, radially extending projection.
- a dressable multi-start grinding worm is generally used.
- the dressing of the grinding worm is again done with a single or multi-grooved dressing roller.
- the present invention relates to a method for producing such a dressing tool. Preference is given to multi-section solid profile rollers, which can be used for the efficient dressing of grinding worms.
- a mold ring is produced by another method, with the workpiece-specific Profile is provided.
- a diamond or nickel layer is deposited on this profile in a galvanic process, which - after being glued to a core - ultimately results in the abovementioned dressing tool after various further process steps.
- the manufacturing process is very complex. Often, for the production of the diamond or nickel layer of the mold ring is up to three weeks in a galvanic bath.
- the profile of the dressing tool thus produced sometimes has errors that can be attributed to various causes.
- the outer flanks of the profile "fold" outward, which is attributed to stresses in the structure.
- thermal stresses are noticeable, which lead to errors in the profile.
- the invention is therefore the object of a generic method in such a way that the profile of the dressing tool produced as well as the ideal contour corresponds; thus profile defects are to be eliminated on the dressing tool.
- it should be ensured that the deformation of the nickel layer remains as low as possible. Accordingly, the dressing tool should have a precise geometry.
- an open grid structure with openings is preferably used as the support element, so that the radially inner surface is not radially closed by the support element. Rather, therefore, the replacement of the electrolyte required for the production of the coating by the support element is not or hardly hindered.
- the support element preferably extends over a width which corresponds to between 90% and 100% of the width of the dressing tool.
- a structure which has a number of rings which extend in the circumferential direction of the radially inner surface, wherein the rings are interconnected by means of transverse struts, wherein the transverse struts extend in the axial direction of the dressing tool.
- the rings and / or the transverse struts are preferably made of metal.
- the rings and / or the transverse struts preferably have a circular cross-section. In this respect, a wire with a circular cross-section can be used as a base material for the production of the support element.
- the number of rings preferably results from the number of projections plus one. In this case, therefore, there is a ring on both sides of each recess of the mold ring.
- the rings and the cross struts can be materially connected to each other before their use or prior to introduction into the mold ring; this is in particular intended for welding or soldering.
- the mold ring can at least temporarily rotate about its axis during the implementation of the above step c). It can thereby be ensured that the abrasive material (in particular the diamond powder) is retained by the centrifugal force in the recesses of the molding ring until it is fixed to the surface of the recess by the (in particular galvanic) coating process.
- the abrasive material in particular the diamond powder
- the removal of the molding ring according to the above step d) is preferably carried out by machining, in particular by twisting, the molding ring.
- one aspect of the present invention is to incorporate a brace (i.e., the support member) into the forming nickel layer during the preferably electroplated coating process.
- This brace counteracts possible deformation and prevents it.
- a galvanic coating electrochemical deposition, "galvanic nickel”
- a chemical coating can also be provided (“chemically nickel”).
- various coating materials are possible, with nickel being preferred.
- the material of the support element is chosen so that it can be easily introduced into the nickel layer and thereby deformed as little as possible. It is ensured that the deposited galvanic layer can not deform.
- the support element is galvanically connected to the previously already applied (as part of a first fixation of the abrasive material in the mold ring) galvanic layer already containing the abrasive body.
- the configuration of the support element is chosen so that it counteracts an optionally acting deformation stress.
- the support element is designed or designed so that a uniform deposition of the galvanic layer can be achieved even after the introduction of the support element.
- the support element may not form a shield by name; the replacement of the electrolyte must be ensured.
- the support element may be introduced before or after the diamondizing (that is, before or after the introduction of the abrasive material on the surface of the above-mentioned recesses).
- the support member In the proposed embodiment of the support member is ensured that the support element during galvanizing causes no change in the grain density (number of grains on the surface) and no grain imperfections.
- the proposed invention is used in particular in solid profile rollers or in the galvanic negative coating.
- 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. In the axial direction, the dressing tool 1 has a width B.
- the dressing tool 1 has three ring-shaped, circumferentially extending projections 2, which 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 here.
- FIG. 2 The production of such a dressing tool 1 is in FIG. 2 illustrated.
- Central element for the production is a mold ring 3, which has a substantially hollow cylindrical shape.
- recesses 5 are incorporated (ie ground in with high accuracy), which are congruent (congruent) formed with the projections 2 (negative method).
- the abrasive material 6 (diamond powder) is initially placed in the production of the dressing tool 1, so that the surface 8 of the recesses 5 is at least partially covered or occupied by this abrasive material 6.
- FIG. 2 is a state to see, in which the galvanic coating process is already largely completed, ie the area of the recesses 5 has already filled with the material of the coating and beyond detected a radially inward reaching area.
- a support element 9 was introduced into the mold ring 3, which was at least partially integrated by the galvanic coating process in the forming dressing tool 1.
- FIG. 2 It can be seen that the support element 9 has been completely integrated into the coating material, ie surrounded by it. Thus, therefore, the support member is materially connected to the resulting dressing tool 1. However, it is also possible that after completion of the coating process, the support element 9 is not completely surrounded by the coating material.
- the mold ring 3 is removed, which can be done by a machining operation.
- the dressing tool 1 is available for its intended use.
- the coming to use support elements 9 can be seen again in a perspective view.
- the support element 9 has a width b which corresponds substantially to the width of the dressing tool 1 or is slightly smaller than said width B.
- the support element 9 consists of several (in the embodiment: four) rings 11, which are connected by equidistantly distributed over the circumference arranged transverse struts 12 (in particular: soldered). Preferably, 20 to 80 transverse struts 12 are circumferentially.
- openings 10 that allow it during the coating process electrolyte can pass through the support member 9 and thus is not or hardly hindered by the support member 9 of the electroplating process.
- the support element 9 (or support grid) designed as a lattice-shaped structure of longitudinal and transverse struts, which is stretched in the mold ring.
- the dimensions of the grid structure are adapted to the contour to be supported.
- the support element is thereby positioned in the mold ring, that the total width of the grooves (recesses) is covered and the support element is completely embedded in the nickel layer.
- the coating 7 can be carried out in a finally desired extent in a second workstation. Before this occurs, however, the support element 9 is introduced into the mold ring 3 and integrally bonded by the coating process.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Grinding-Machine Dressing And Accessory Apparatuses (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
Die Erfindung betrifft ein Verfahren zum Herstellen eines Abrichtwerkzeugs (1) für ein Schleifwerkzeug, vorzugsweise für eine Schleifschnecke, wobei das Abrichtwerkzeug (1) mindestens einen, vorzugsweise ringförmig ausgebildeten, sich radial (r) erstreckenden Vorsprung (2) aufweist. Um eine präzise Geometrie des Abrichtwerkzeugs zu erhalten, sieht die Erfindung vor, dass das Verfahren die Schritte aufweist: a) Herstellung eines Formrings (3), der an einer radial innenliegenden Fläche (4) eine der Anzahl der Vorsprünge (2) entsprechende Anzahl Ausnehmungen (5) aufweist, die kongruent zu den Vorsprüngen (2) ausgebildet sind; b) Platzieren eines Abrasivmaterials (6), insbesondere von Diamantpulver, in den Ausnehmungen (5); c) Erzeugung einer chemischen oder elektro-chemischen Beschichtung (7) in den Ausnehmungen (5), so dass das Abrasivmaterial (6) im Bereich der Oberfläche (8) der Ausnehmungen (5) fixiert wird; d) Entfernung des Formrings (3), um das so entstandene Abrichtwerkzeug (1) zu erhalten; wobei vor oder während Schritt b) oder vor oder während Schritt c) im Bereich der radial innenliegenden Fläche (4) ein Stützelement (9) platziert wird, das während Schritt c) zumindest teilweise durch die Beschichtung (7) stoffschlüssig mit dem entstehenden Abrichtwerkzeug (1) verbunden wird.The invention relates to a method for producing a dressing tool (1) for a grinding tool, preferably for a grinding worm, wherein the dressing tool (1) has at least one, preferably annular, radially extending projection (2). In order to obtain a precise geometry of the dressing tool, the invention provides that the method comprises the steps of: a) producing a molding ring (3) having on a radially inner surface (4) a number of recesses corresponding to the number of projections (2) (5) formed congruent with the projections (2); b) placing an abrasive material (6), in particular diamond powder, in the recesses (5); c) generating a chemical or electrochemical 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 mold ring (3) to obtain the resulting dressing tool (1); wherein before or during step b) or before or during step c) in the region of the radially inner surface (4) a support element (9) is placed, which during step c) at least partially by the coating (7) cohesively with the resulting dressing tool ( 1) is connected.
Description
Die Erfindung betrifft ein Verfahren zum Herstellen eines Abrichtwerkzeugs für ein Schleifwerkzeug, vorzugsweise für eine Schleifschnecke, wobei das Abrichtwerkzeug mindestens einen, vorzugsweise ringförmig ausgebildeten, sich radial erstreckenden Vorsprung aufweist.The invention relates to a method for producing a dressing tool for a grinding tool, preferably for a grinding worm, wherein the dressing tool has at least one, preferably annular, radially extending projection.
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.When machining gear teeth with rolling tools in particular, a dressable multi-start grinding worm is generally used. The dressing of the grinding worm is again done with a single or multi-grooved dressing roller. The present invention relates to a method for producing such a dressing tool. Preference is given to multi-section solid profile rollers, which can be used for the efficient dressing of grinding worms.
Ein gattungsgemäßes Verfahren ist in der
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.To produce such a generic solid profile roll, a mold ring is produced by another method, with the workpiece-specific Profile is provided. In most cases, a diamond or nickel layer is deposited on this profile in a galvanic process, which - after being glued to a core - ultimately results in the abovementioned dressing tool after various further 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, for the production of the diamond or nickel layer of the mold ring is up to three weeks in a galvanic bath.
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 thus produced sometimes has errors that can be attributed to various causes. In particular, the outer flanks of the profile "fold" outward, which is attributed to stresses in the structure. Furthermore, also thermal stresses are 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.Thus, it results that deformations of the nickel layer, in particular caused by internal stresses and mechanical stress, the accuracy of the profile is impaired. Disadvantageously, a corresponding rework is thus necessary before the use of the dressing tool 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 the object of a generic method in such a way that the profile of the dressing tool produced as well as the ideal contour corresponds; thus profile defects are to be eliminated on the dressing tool. In particular, it should be ensured that the deformation of the nickel layer remains as low as possible. Accordingly, the dressing tool should have a precise geometry.
Die Lösung dieser Aufgabe durch die Erfindung sieht ein Verfahren vor, das die Schritte aufweist:
- a) Herstellung eines Formrings, der an einer radial innenliegenden Fläche eine der Anzahl der Vorsprünge entsprechende Anzahl Ausnehmungen aufweist, die kongruent zu den Vorsprüngen ausgebildet sind;
- b) Platzieren eines Abrasivmaterials, insbesondere von Diamantpulver, in den Ausnehmungen;
- c) Erzeugung einer chemischen oder elektro-chemischen Beschichtung in den Ausnehmungen, so dass das Abrasivmaterial im Bereich der Oberfläche der Ausnehmungen fixiert wird;
- d) Entfernung des Formrings, um das so entstandene Abrichtwerkzeug zu erhalten;
- a) production of a mold ring having on a radially inner surface of a number of projections corresponding number of recesses, which are formed congruent to the projections;
- b) placing an abrasive material, in particular diamond powder, in the recesses;
- c) generating a chemical or electro-chemical coating in the recesses, so that the abrasive material is fixed in the region of the surface of the recesses;
- d) removal of the mold ring to obtain the resulting dressing tool;
Als Stützelement wird dabei bevorzugt eine offene Gitterstruktur mit Öffnungen verwendet, so dass die radial innenliegende Fläche nicht durch das Stützelement radial verschlossen wird. Vielmehr wird somit der Austausch des für die Herstellung der Beschichtung benötigten Elektrolyts durch das Stützelement nicht bzw. kaum behindert.In this case, an open grid structure with openings is preferably used as the support element, so that the radially inner surface is not radially closed by the support element. Rather, therefore, 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 which 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.As a support member preferably a structure is used which has a number of rings which extend in the circumferential direction of the radially inner surface, wherein the rings are interconnected by means of transverse struts, wherein the transverse struts extend in the axial direction of the dressing tool. The rings and / or the transverse struts are preferably made of metal. The rings and / or the transverse struts preferably have a circular cross-section. In this respect, a wire with a circular cross-section can be used as a 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, therefore, there is a ring on both sides of each recess of the mold 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 materially connected to each other before their use or prior to introduction into the mold ring; this is in particular intended for 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 mold ring can at least temporarily rotate about its axis during the implementation of the above step c). It can thereby be ensured that the abrasive material (in particular the diamond powder) is retained by the centrifugal force in the recesses of the molding ring 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 molding ring according to the above step d) is preferably carried out by machining, in particular by twisting, the molding 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.Thus, one aspect of the present invention is to incorporate a brace (i.e., the support member) into the forming nickel layer during the preferably electroplated coating process. This brace counteracts possible deformation and prevents it. As mentioned, a galvanic coating (electrochemical deposition, "galvanic nickel") is preferred. In general, however, a chemical coating can also be provided ("chemically nickel"). Of course, various coating materials are possible, with 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 introduced into the nickel layer and thereby deformed as little as possible. It is ensured that the deposited galvanic layer can not deform. The support element is galvanically connected to the previously already applied (as part of a first fixation of the abrasive material in the mold ring) galvanic layer already containing the abrasive body.
Demgemäß wird also die Ausgestaltung der Stützelements so gewählt, dass es einer gegebenenfalls wirkenden Verformungsspannung entgegenwirkt.Accordingly, therefore, the configuration of the support element is chosen so that it counteracts an optionally acting deformation stress.
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 so that a uniform deposition of the galvanic layer can be achieved even after the introduction of the support element. The support element may not form a shield by name; the replacement of the electrolyte must be ensured.
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 may be introduced before or after the diamondizing (that is, before or after the introduction of the abrasive material on 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.In the proposed embodiment of the support member is ensured that the support element during galvanizing causes no change in the grain density (number of grains on the surface) and no grain imperfections.
Die vorgeschlagene Erfindung wird insbesondere bei Vollprofilrollen eingesetzt bzw. bei der galvanischen Negativbeschichtung.The proposed invention is used in particular in solid profile rollers or in the 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.
- Fig. 1
- in partial radial section, the side view of a dressing tool in the form of a tri-part solid profile roller,
- Fig. 2
- in radial section a molding ring with the dressing tool produced by this and
- Fig. 3
- in perspective a part of a support element which is embedded in the dressing tool.
In
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
Die Herstellung eines solchen Abrichtwerkzeugs 1 ist in
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.In the
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
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
Nachdem der in
In
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
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 embodiment, therefore, the support element 9 (or support grid) designed as a lattice-shaped structure of longitudinal and transverse struts, which is stretched in the mold ring. The dimensions of the grid structure are adapted to the contour to be supported. The support element is thereby positioned in the mold ring, 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 5befindliche Abrasivmaterial 6 fixiert, wobei der Formring 3 rotiert, so dassdas Abrasivmaterial 6 durch die Zentrifugalkraft im Bereich der Oberfläche 8der Ausnehmung 5 gehalten wird.
- In a first stage, in a first workstation, the
abrasive material 6 located in therecesses 5 is fixed by a first coating of nickel, themolding ring 3 rotating, so that theabrasive material 6 is held in the area of thesurface 8 of therecess 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
- 11
- Abrichtwerkzeugdressing tool
- 22
- Vorsprunghead Start
- 33
- Formringmold ring
- 44
- 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
- 1010
- Öffnung im StützelementOpening in the support element
- 1111
- Ringring
- 1212
- Querstrebecrossmember
- 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 (10)
dadurch gekennzeichnet, dass
das Verfahren die Schritte aufweist:
characterized in that
the method comprises the steps of:
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 |
Publications (2)
Publication Number | Publication Date |
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EP3254806A1 true EP3254806A1 (en) | 2017-12-13 |
EP3254806B1 EP3254806B1 (en) | 2020-04-01 |
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ID=58800589
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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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) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2021058142A1 (en) * | 2019-09-24 | 2021-04-01 | Reishauer Ag | Dressing tool and method for the production thereof |
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US6200360B1 (en) * | 1998-04-13 | 2001-03-13 | Toyoda Koki Kabushiki Kaisha | Abrasive tool and the method of producing the same |
WO2007000831A1 (en) * | 2005-06-27 | 2007-01-04 | A.L.M.T. Corp. | Diamond rotary dresser for gear and method for truing and dressing gear processing grinding wheel using the rotary dresser |
US20140302757A1 (en) * | 2011-11-02 | 2014-10-09 | Asahi Diamond Industrial Co., Ltd. | Rotary dresser and manufacturing method therefor |
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- 2017-06-07 CN CN201710423533.4A patent/CN107471126B/en active Active
- 2017-06-07 US US15/616,006 patent/US10507564B2/en active Active
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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 |
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WO2007000831A1 (en) * | 2005-06-27 | 2007-01-04 | A.L.M.T. Corp. | Diamond rotary dresser for gear and method for truing and dressing gear processing grinding wheel using the rotary dresser |
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Also Published As
Publication number | Publication date |
---|---|
US20170355063A1 (en) | 2017-12-14 |
DE102016006951B4 (en) | 2018-05-09 |
CN107471126A (en) | 2017-12-15 |
CN107471126B (en) | 2020-09-22 |
DE102016006951A1 (en) | 2017-12-14 |
EP3254806B1 (en) | 2020-04-01 |
US10507564B2 (en) | 2019-12-17 |
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