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EP0328482B1 - Disc-shaped rotating tool for shaping cylindrical grinding worms for grinding gears - Google Patents

Disc-shaped rotating tool for shaping cylindrical grinding worms for grinding gears Download PDF

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Publication number
EP0328482B1
EP0328482B1 EP89810049A EP89810049A EP0328482B1 EP 0328482 B1 EP0328482 B1 EP 0328482B1 EP 89810049 A EP89810049 A EP 89810049A EP 89810049 A EP89810049 A EP 89810049A EP 0328482 B1 EP0328482 B1 EP 0328482B1
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EP
European Patent Office
Prior art keywords
profiling
disc
grinding worm
grinding
flank
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.)
Expired - Lifetime
Application number
EP89810049A
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German (de)
French (fr)
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EP0328482A3 (en
EP0328482A2 (en
Inventor
Jakob Cadisch
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Reishauer AG
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Reishauer AG
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Publication date
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Publication of EP0328482A2 publication Critical patent/EP0328482A2/en
Publication of EP0328482A3 publication Critical patent/EP0328482A3/en
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Publication of EP0328482B1 publication Critical patent/EP0328482B1/en
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    • 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
    • B24B53/06Devices or means for dressing or conditioning abrasive surfaces of profiled abrasive wheels
    • B24B53/075Devices 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

Definitions

  • the invention relates to a bill-shaped, rotating tool for profiling cylindrical grinding worms according to the preamble of claim 1.
  • a bill-shaped, rotating tool for profiling cylindrical grinding worms according to the preamble of claim 1.
  • Such a tool is known from DE-A-20 10 526.
  • a precise, but slow and cumbersome process is to create the screw profile by means of ground shape diamonds. These are used in a similar way to turning steels and the procedure for this type of profiling can be compared to cutting a thread on a lathe. Because this process is slow and because the form diamond tools are very delicate and uneconomical, it is rarely used today.
  • Another possibility is referred to as the crushing process, in which a press roller shaped according to the profile cross section is pressed with great force against the slowly rotating grinding worm without its own drive.
  • the blunted grains are broken out of the disk matrix and the screw profile assumes the shape of the press roller profile if the crushing time is long enough.
  • This process has the advantage that it can be used to produce profile shapes with rounded corners and feet or with other special contours without great difficulty.
  • a disadvantage is the relatively large wear of the press roll during profiling and the very large forces that arise during the crushing process.
  • the profiling roller Similar and also known for a long time is the profiling roller, which is shaped according to the grinding worm profile and coated with hard material grains, but in contrast to the press roller is brought to high speed by a motor drive and thus produces the worm profile by an actual cutting process with relatively low forces.
  • the disadvantage of this method is that the very high accuracy that must be required from the profiling roller can hardly be achieved.
  • the hard body cannot be coated with the required quality.
  • the grinding worm 1 is used to profile a cylindrical grinding worm 1 for grinding spur gears in the continuous rolling process.
  • the grinding worm 1 has a helical groove 2 with a first flank 3 for grinding one tooth flank, a second flank 4 for grinding the other tooth flank, and a foot section 5 and a head section 6.
  • the foot section 5 consists of one each on the flanks 3, 4 About a convex edge 7 adjoining, radially directed sections 8, 9 and an approximately cylindrical section 10.
  • the approximately cylindrical head section 6 merges on both sides with a curve and a convex edge 11 into the flanks 3, 4 (Fig. 2). When grinding the associated gear, the foot section 5 is not in engagement with the gear.
  • the profiling tool consists of two rotationally symmetrical disks 15, 16, which are each clamped on a separate, motor-driven spindle 17, 18.
  • the spindle 18 is on a cross slide 19 mounted and thus axially and radially adjustable relative to the spindle 17.
  • the bearing of the spindle 17 and the cross slide 19, not shown, are mounted on a profiling slide, not shown, which moves to produce the helical groove 2 depending on the rotational movement of the grinding worm 1 back and forth parallel to the latter.
  • the disk 15 is used to profile the flanks 3, 4 and has an adapted surface 21, 22 for each.
  • the surfaces 21, 22 are longer in axial section than the flanks 3, 4 and each protrude over the edges 7 when engaged with the grinding worm 1 , 11 out.
  • the surfaces 21, 22 are covered with hard granules, e.g. with grains of diamond or cubic boron nitride. Because they have no sharp curvatures in the axial section, they can be lapped because the lapping disks can run out laterally, so that the flanks 3, 4 of the grinding worm 1 can be profiled with very high accuracy.
  • the second disk 16 has a section 25 covered with hard material grains for profiling the foot section 5.
  • the section 25 consists of two flat sections 26, 27 and a cylindrical section 28.
  • the cylindrical section 28 alone would suffice; but it is advantageous to also cover pages 26, 27 for better edge retention.
  • the disk 16 each has an approximately cylindrical section 31, 32 covered with hard material grains for profiling each about half of the head section 6.
  • Each section 31, 32 merges via a rounding 33 into a conical section 34, which is slightly smaller Has opening angle as the flanks 3, 4 adjacent to the edge 11 (Fig. 2). Since the foot and head sections 5, 6 of the grinding worm 1 are not subject to high accuracy requirements, the parts 25, 31, 32 do not need to be lapped.
  • the cross slide 19 aligns the second disk 16 with respect to the first disk 15 such that both the flanks 3, 4 and the foot and head sections 5, 6 are simultaneously profiled in the same pass. This enables the profiling of the grinding worm 1 to be automated easily.
  • the disk 15 can also be composed of two partial disks and a spacer.
  • the disc can then be adapted to other widths of the groove 2 by changing the spacer.
  • An analogous solution is also shown in FIG. 3 for the second disk 16 ', which here is composed of three partial disks 38, 39, 40 and two spacer disks 41.
  • the middle graduated disk 40 can, as indicated by dashed lines is divided by a parting plane 42 which is slightly inclined to the radial direction. The thickness of this indexing disk 40 can also be adjusted by means of inserts 43. Because of the inclined parting plane 42, the circumferential sections forming the section 28 overlap when the disk 16 'is rotated.
  • the two disks 46, 47 are constructed identically and each have a hard-grain-coated surface 48, 49 for profiling the flanks 3, 4.
  • the surface 48 for profiling the right flank 4 is closed on the outer circumference by a hard-grain-coated part 50 for profiling the left half of the Foot section 5, ie of section 8 and the adjoining half of section 10.
  • the second disk 47 has a corresponding section 51 for profiling the other half of the foot section 5.
  • the disks 46, 47 each have a section 52, 53 for processing half of the head sections 6 the two disks 46, 47 can be clamped on a common, driven spindle or, if an individual, small adjustment possibility of the two disks against one another is desired, can each be clamped on a separate, individually driven spindle.
  • this disk it is indicated by dashed lines that this disk can also be constructed from a plurality of dividing disks and spacer disks.

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

Description

Die Erfindung betrifft ein Scheinbenförmiges, rotierendes Werkzeug zum Profilieren von zylindrischen Schleifschnecken gemäß dem Oberbegriff des Patentanspruchs 1. Ein solches Werkzeug ist aus der DE-A-20 10 526 bekannt.The invention relates to a bill-shaped, rotating tool for profiling cylindrical grinding worms according to the preamble of claim 1. Such a tool is known from DE-A-20 10 526.

Für das Profilieren von zylindrischen Schleifschnecken, die zum Schleifen von Verzahnungen an meistens vorbearbeiteten und gehärteten Zahnrädern eingesetzt werden, sind mehrere Verfahren bekannt.Several methods are known for profiling cylindrical grinding worms which are used for grinding gears on mostly pre-machined and hardened gear wheels.

Ein zwar genaues, aber langsames und umständliches Verfahren ist das Erzeugen des Schneckenprofils mittels geschliffener Formdiamanten. Diese werden ähnlich wie Drehstähle eingesetzt und das Vorgehen bei dieser Profilierungsart ist gut zu vergleichen mit dem Schneiden eines Gewindes auf einer Drehbank. Weil dieses Verfahren langsam ist und weil die Formdiamant-Werkzeuge sehr empfindlich und unwirtschaftlich sind, wird es heute nur selten angewendet.A precise, but slow and cumbersome process is to create the screw profile by means of ground shape diamonds. These are used in a similar way to turning steels and the procedure for this type of profiling can be compared to cutting a thread on a lathe. Because this process is slow and because the form diamond tools are very delicate and uneconomical, it is rarely used today.

Eine weitere Möglichkeit wird als Crushing-Verfahren bezeichnet, bei welchem eine dem Profilquerschnitt entsprechend geformte Pressrolle ohne eigenen Antrieb mit grosser Kraft gegen die langsam drehende Schleifschnecke gedrückt wird. Dadurch werden die abgestumpften Körner aus der Scheibenmatrix ausgebrochen und das Schneckenprofil nimmt bei genügend langer Crushierzeit die Form des Pressrollenprofils an. Dieses Verfahren hat den Vorteil, dass sich damit auch ohne grosse Schwierigkeiten Profilformen mit Kopf- und Fussrundungen oder mit andern Spezialkonturen herstellen lassen. Ein Nachteil dagegen ist der relativ grosse Verschleiss der Pressrolle beim Profilieren sowie die sehr grossen Kräfte, die beim Crushingvorgang entstehen.Another possibility is referred to as the crushing process, in which a press roller shaped according to the profile cross section is pressed with great force against the slowly rotating grinding worm without its own drive. As a result, the blunted grains are broken out of the disk matrix and the screw profile assumes the shape of the press roller profile if the crushing time is long enough. This process has the advantage that it can be used to produce profile shapes with rounded corners and feet or with other special contours without great difficulty. A disadvantage, on the other hand, is the relatively large wear of the press roll during profiling and the very large forces that arise during the crushing process.

Aehnlich und ebenfalls schon lange bekannt ist die an ihrem Aussendurchmesser entsprechend dem Schleifschneckenprofil geformte und mit Hartstoffkörnern belegte Profilierrolle, die im Unterschied zur Pressrolle jedoch durch motorischen Antrieb auf hohe Drehzahl gebracht wird und dadurch das Schneckenprofil durch einen eigentlichen Schneidprozess mit relativ geringen Kräften erzeugt. Der Nachteil dieses Verfahrens ist, dass die sehr hohe Genauigkeit, die von der Profilierrolle gefordert werden muss, kaum erreicht werden kann. Das Belegen des Rollengrundkörpers mit Hartstoffkörnern kann nicht in der nötigen Qualität erfolgen.Similar and also known for a long time is the profiling roller, which is shaped according to the grinding worm profile and coated with hard material grains, but in contrast to the press roller is brought to high speed by a motor drive and thus produces the worm profile by an actual cutting process with relatively low forces. The disadvantage of this method is that the very high accuracy that must be required from the profiling roller can hardly be achieved. The hard body cannot be coated with the required quality.

Es sind auch einfache, kegelige Profilierscheiben bekannt, die mit Hartstoffkörnern beschichtet sind (DE-A-2 010 526). Mit diesen Profilierscheiben können allerdings nur die Flankenpartien der Schleifschnecken profiliert werden. Diese Profilierscheiben können geläppt werden und erreichen daher eine hohe Genauigkeit. Solche Profilierscheiben werden meistens paarweise eingesetzt und zwar jeweils für die linke und die rechte Flanke des Profils eine Scheibe. Der Nachteil dieser heute überwiegend eingesetzten Profilierscheiben ist der, dass Kopf- und/oder Fussradien am Schleifschneckenprofil nicht in einem Arbeitsgang mitprofiliert werden können und sich dadurch die Automatisierung des Profilierprozesses verkompliziert.Simple, tapered profiling disks are also known, which are coated with hard material grains (DE-A-2 010 526). However, only the flank sections of the grinding worms can be profiled with these profiling discs. These profiling disks can be lapped and therefore achieve high accuracy. Such profiling disks are mostly used in pairs, one for each of the left and right flanks of the profile. The disadvantage of these profiling disks, which are predominantly used today, is that the head and / or foot radii on the grinding worm profile cannot be profiled in one work step, which complicates the automation of the profiling process.

Die vorliegende Erfindung hat zum Zweck, diesen Nachteil zu beseitigen. Diese Aufgabe wird erfindungsgemäss durch die Merkmale des Anspruchs 1 gelöst.The purpose of the present invention is to overcome this disadvantage. According to the invention, this object is achieved by the features of claim 1.

Nachfolgen werden Ausführungsbeispiele der Erfindung anhand der Zeichnung erläutert. Darin zeigt:

Fig. 1
einen Axialschnitt durch ein erstes Ausführungsbeispiel,
Fig. 2
eine vergrösserte Darstellung eines Details,
Fig. 3
eine Variante des Ausführungsbeispiels nach Fig. 1, und
Fig. 4
ein Axialschnitt durch ein zweites Ausführungsbeispiel.
Embodiments of the invention are explained below with reference to the drawing. It shows:
Fig. 1
an axial section through a first embodiment,
Fig. 2
an enlarged view of a detail,
Fig. 3
a variant of the embodiment of FIG. 1, and
Fig. 4
an axial section through a second embodiment.

Das Werkzeug gemäss Fig. 1 dient zum Profilieren einer zylindrischen Schleifschnecke 1 zum Schleifen von Stirnzahnrädern im kontinuierlichen Wälzverfahren. Die Schleifschnecke 1 hat eine wendelförmige Nut 2 mit einer ersten Flanke 3 zum Schleifen der einen Zahnflanke, einer zweiten Flanke 4 zum Schleifen der andern Zahnflanke sowie einen Fussabschnitt 5 und einen Kopfabschnitt 6. Der Fussabschnitt 5 besteht aus je einem an die Flanken 3, 4 über eine konvexe Kante 7 anschliessenden, radial gerichteten Teilabschnitt 8, 9 und einem annähernd zylindrischen Teilabschnitt 10. Der annähernd zylindrische Kopfabschnitt 6 geht beidseitig über je eine Rundung und eine konvexe Kante 11 in die Flanken 3, 4 über (Fig. 2). Beim Schleifen des zugehörigen Zahnrades ist der Fussabschnitt 5 nicht im Eingriff mit dem Zahnrad.1 is used to profile a cylindrical grinding worm 1 for grinding spur gears in the continuous rolling process. The grinding worm 1 has a helical groove 2 with a first flank 3 for grinding one tooth flank, a second flank 4 for grinding the other tooth flank, and a foot section 5 and a head section 6. The foot section 5 consists of one each on the flanks 3, 4 About a convex edge 7 adjoining, radially directed sections 8, 9 and an approximately cylindrical section 10. The approximately cylindrical head section 6 merges on both sides with a curve and a convex edge 11 into the flanks 3, 4 (Fig. 2). When grinding the associated gear, the foot section 5 is not in engagement with the gear.

Das Profilierwerkzeug besteht bei der Ausführungsform nach Fig. 1 aus zwei rotationssymmetrischen Scheiben 15, 16, die je auf einer separaten, motorisch angetriebenen Spindel 17, 18 aufgespannt sind. Die Spindel 18 ist auf einem Kreuzschlitten 19 gelagert und damit axial und radial gegenüber der Spindel 17 einstellbar. Das nicht dargestellte Lager der Spindel 17 und der Kreuzschlitten 19 sind auf einem nicht dargestellten Profilierschlitten montiert, der sich zur Erzeugung der wendelförmigen Nut 2 abhängig von der Drehbewegung der Schleifschnecke 1 achsparallel zu dieser hin und her bewegt.In the embodiment according to FIG. 1, the profiling tool consists of two rotationally symmetrical disks 15, 16, which are each clamped on a separate, motor-driven spindle 17, 18. The spindle 18 is on a cross slide 19 mounted and thus axially and radially adjustable relative to the spindle 17. The bearing of the spindle 17 and the cross slide 19, not shown, are mounted on a profiling slide, not shown, which moves to produce the helical groove 2 depending on the rotational movement of the grinding worm 1 back and forth parallel to the latter.

Die Scheibe 15 dient zum Profilieren der Flanken 3, 4 und hat dazu je eine angepasste Fläche 21, 22. Die Flächen 21, 22 sind im Axialschnitt länger als die Flanken 3, 4 und ragen beim Eingriff mit der Schleifschnecke 1 je über die Kanten 7, 11 hinaus. Die Flächen 21, 22 sind mit Hartstoffkörnern belegt, z.B. mit Körnern aus Diamant oder kubischem Bornitrid. Weil sie im Axialschnitt keine scharfen Krümmungen aufweisen, können sie geläppt werden, da die Läppscheiben seitlich auslaufen können, so dass die Flanken 3, 4 der Schleifschnecke 1 mit sehr hoher Genauigkeit profiliert werden können.The disk 15 is used to profile the flanks 3, 4 and has an adapted surface 21, 22 for each. The surfaces 21, 22 are longer in axial section than the flanks 3, 4 and each protrude over the edges 7 when engaged with the grinding worm 1 , 11 out. The surfaces 21, 22 are covered with hard granules, e.g. with grains of diamond or cubic boron nitride. Because they have no sharp curvatures in the axial section, they can be lapped because the lapping disks can run out laterally, so that the flanks 3, 4 of the grinding worm 1 can be profiled with very high accuracy.

Die zweite Scheibe 16 hat eine mit Hartstoffkörnern belegte Partie 25 zum Profilieren des Fussabschnittes 5. Die Partie 25 besteht aus zwei ebenen Teilstücken 26, 27 und einem zylindrischen Teilstück 28. Das zylindrische Teilstück 28 allein würde genügen; doch ist es vorteilhaft, zwecks besserer Kantenhaltigkeit die Seiten 26, 27 auch zu belegen. Beidseits der Partie 25 hat die Scheibe 16 je eine annähernd zylindrische, mit Hartstoffkörnern belegte Partie 31, 32 zum Profilieren je etwa der Hälfte des Kopfabschnittes 6. Jede Partie 31, 32 geht über eine Abrundung 33 in ein konisches Teilstück 34 über, das einen etwas geringeren Oeffnungswinkel als die Flanken 3, 4 benachbart der Kante 11 hat (Fig. 2). Da an die Fuss- und Kopfabschnitte 5, 6 der Schleifschnecke 1 keine hohen Genauigkeitsanforderungen gestellt werden, brauchen die Partien 25, 31, 32 nicht geläppt zu werden.The second disk 16 has a section 25 covered with hard material grains for profiling the foot section 5. The section 25 consists of two flat sections 26, 27 and a cylindrical section 28. The cylindrical section 28 alone would suffice; but it is advantageous to also cover pages 26, 27 for better edge retention. On both sides the section 25, the disk 16 each has an approximately cylindrical section 31, 32 covered with hard material grains for profiling each about half of the head section 6. Each section 31, 32 merges via a rounding 33 into a conical section 34, which is slightly smaller Has opening angle as the flanks 3, 4 adjacent to the edge 11 (Fig. 2). Since the foot and head sections 5, 6 of the grinding worm 1 are not subject to high accuracy requirements, the parts 25, 31, 32 do not need to be lapped.

Im Betrieb wird mit dem Kreuzschlitten 19 die zweite Scheibe 16 gegenüber der ersten Scheibe 15 so ausgerichtet, dass im gleichen Durchgang sowohl die Flanken 3, 4, als auch die Fussund Kopfabschnitte 5, 6 gleichzeitig profiliert werden. Dadurch kann das Profilieren der Schleifschnecke 1 einfach automatisiert werden.In operation, the cross slide 19 aligns the second disk 16 with respect to the first disk 15 such that both the flanks 3, 4 and the foot and head sections 5, 6 are simultaneously profiled in the same pass. This enables the profiling of the grinding worm 1 to be automated easily.

Die Scheibe 15 kann, wie in Fig. 1 durch strichlierte Linien angedeutet ist, auch aus zwei Teilscheiben und einem Distanzhalter zusammengesetzt sein. Durch Auswechseln des Distanzhalters kann dann die Scheibe andern Breiten der Nut 2 angepasst werden. Eine analoge Lösung ist in Fig. 3 auch für die zweite Scheibe 16' dargestellt, die hier aus drei Teilscheiben 38, 39, 40 und zwei Distanzscheiben 41 zusammengesetzt ist. Die mittlere Teilscheibe 40 kann, wie strichliert angedeutet ist, durch eine leicht geneigt zur Radialrichtung verlaufende Trennebene 42 unterteilt sein. Damit ist auch die Dicke dieser Teilscheibe 40 durch Beilagen 43 einstellbar. Wegen der geneigten Trennebene 42 überlappen sich die das Teilstück 28 bildenden Umfangsabschnitte beim Drehen der Scheibe 16'.As indicated in FIG. 1 by dashed lines, the disk 15 can also be composed of two partial disks and a spacer. The disc can then be adapted to other widths of the groove 2 by changing the spacer. An analogous solution is also shown in FIG. 3 for the second disk 16 ', which here is composed of three partial disks 38, 39, 40 and two spacer disks 41. The middle graduated disk 40 can, as indicated by dashed lines is divided by a parting plane 42 which is slightly inclined to the radial direction. The thickness of this indexing disk 40 can also be adjusted by means of inserts 43. Because of the inclined parting plane 42, the circumferential sections forming the section 28 overlap when the disk 16 'is rotated.

In Fig. 4 ist eine zweite Ausführungsform der Erfindung dargestellt. Hier sind die beiden Scheiben 46, 47 identisch aufgebaut und haben je eine hartkornbeschichtete Fläche 48, 49 zum Profilieren der Flanken 3, 4. An die Fläche 48 zum Profilieren der rechten Flanke 4 schliesst am Aussenumfang eine hartkornbeschichtete Partie 50 zum Profilieren der linken Hälfte des Fussabschnittes 5, d.h. des Teilabschnittes 8 und der daran angrenzenden Hälfte des Teilabschnittes 10 an. Die zweite Scheibe 47 hat eine entsprechende Partie 51 zum Profilieren der andern Hälfte des Fussabschnittes 5. An den von den Flächen 48, 49 abgewandten Seiten haben die Scheiben 46, 47 je eine Partie 52, 53 zur Bearbeitung je der Hälfte der Kopfabschnitte 6. Die beiden Scheiben 46, 47 können auf einer gemeinsamen, angetriebenen Spindel oder, falls eine individuelle geringe Einstellmöglichkeit der beiden Scheiben gegeneinander gewünscht wird, je auf einer separaten, einzel angetriebenen Spindel festgespannt werden. In der Scheibe 46 ist strichliert angedeutet, dass auch diese Scheibe aus mehreren Teilscheiben und Distanzscheiben aufgebaut werden kann.4 shows a second embodiment of the invention. Here, the two disks 46, 47 are constructed identically and each have a hard-grain-coated surface 48, 49 for profiling the flanks 3, 4. The surface 48 for profiling the right flank 4 is closed on the outer circumference by a hard-grain-coated part 50 for profiling the left half of the Foot section 5, ie of section 8 and the adjoining half of section 10. The second disk 47 has a corresponding section 51 for profiling the other half of the foot section 5. On the sides facing away from the surfaces 48, 49, the disks 46, 47 each have a section 52, 53 for processing half of the head sections 6 the two disks 46, 47 can be clamped on a common, driven spindle or, if an individual, small adjustment possibility of the two disks against one another is desired, can each be clamped on a separate, individually driven spindle. In the disk 46 it is indicated by dashed lines that this disk can also be constructed from a plurality of dividing disks and spacer disks.

Claims (8)

  1. A disc-shaped rotating tool for profiling cylindrical grinding worms (1), which are designed for grinding gearwheel teeth in a continuous hobbing process, and which have a first grinding worm flank (3) for dressing one tooth flank, a second grinding worm flank (4) opposite the first flank for dressing the opposite tooth flank, a root section (5), and a crest section (6), said tool comprising: two discs (15, 16; 46, 47), one of said discs (15; 47) having a first surface (21, 49) for profiling the first grinding worm flank (3), characterised in that the parts (25; 31; 50, 52) for profiling the root and crest sections (6, 8) of the grinding worm (1) which directly adjoin the first grinding worm flank (3) along a convex edge (7, 11) are disposed on the other disc (16, 46).
  2. A tool according to claim 1, characterised in that the two surfaces (21, 22) for individually profiling the two grinding worm flanks (3, 4) are mounted on the same disc (15) and the parts (25, 31, 32) for profiling the root and crest sections (5, 6) are disposed on the second disc (16).
  3. A tool according to claim 2, characterised in that the second disc (16) comprises several disc parts (38, 39, 40) separated by replaceable spacer discs 41).
  4. A tool according to claim 2 or 3, characterised in that the second disc (16) has two separate parts (31, 32) for profiling the crest sections (6), each of said parts (31, 32) having a rounded portion (33) for dressing parts of the crest sections (6) directly adjoining the first and second grinding worm flank (3, 4).
  5. A tool according to claim 1, characterised in that the two surfaces (48, 49) for profiling the two grinding worm flanks (3, 4) are mounted one on each of the two discs (46, 47) respectively.
  6. A tool according to claim 5, characterised in that each disc (46, 47) has, adjacent the surface (48, 49) for profiling one of the grinding worm flanks (3, 4), external parts (50, 51) for profiling the root sections (5) adjoining the other grinding worm flank (4, 3) and the parts (52, 53) for profiling crest sections (6) which adjoin the other grinding worm flank (4, 3) are mounted on the side of the disc (46, 47) remote from the first surface (48, 49).
  7. A tool according to any of claims 1 to 6, characterised in that the surfaces (21, 22; 48, 49) for profiling the grinding worm flanks (3, 4) are lapped.
  8. A tool according to any of claims 1 to 7, characterised in that the surfaces (21, 22; 48, 49) for profiling the grinding worm flanks (3, 4) and the parts (25, 31, 32; 50-53) for profiling the root and crest sections (5, 6) are coated with hard material grains, more particularly of diamond or cubic boron nitride.
EP89810049A 1988-02-12 1989-01-20 Disc-shaped rotating tool for shaping cylindrical grinding worms for grinding gears Expired - Lifetime EP0328482B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH52988 1988-02-12
CH529/88 1988-02-12

Publications (3)

Publication Number Publication Date
EP0328482A2 EP0328482A2 (en) 1989-08-16
EP0328482A3 EP0328482A3 (en) 1991-03-27
EP0328482B1 true EP0328482B1 (en) 1993-07-14

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP89810049A Expired - Lifetime EP0328482B1 (en) 1988-02-12 1989-01-20 Disc-shaped rotating tool for shaping cylindrical grinding worms for grinding gears

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US (1) US4993194A (en)
EP (1) EP0328482B1 (en)
JP (1) JPH01246073A (en)
DE (1) DE58904886D1 (en)

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DE102008010302A1 (en) * 2008-02-21 2009-08-27 Liebherr-Verzahntechnik Gmbh Device and method for prototype and small batch production of gears

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DE4210710C2 (en) * 1992-03-27 2003-03-20 Niles Werkzeugmaschinen Gmbh Method and device for grinding groove-shaped outer profiles of a workpiece
CH686171A5 (en) * 1992-12-10 1996-01-31 Reishauer Ag Dressing tool for dressing branch {ngiger, cylindrical grinding worms.
US6146253A (en) * 1996-04-23 2000-11-14 Mcdonnell Douglas Helicopter Company Apparatus and method for precision grinding face gear
JP3517060B2 (en) * 1996-08-05 2004-04-05 三菱電線工業株式会社 O-ring deburring
US6491568B1 (en) * 1997-02-21 2002-12-10 Reishauer Ag Profiling methods and apparatus for generation of modified grinding worms
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EP0328482A3 (en) 1991-03-27
US4993194A (en) 1991-02-19
DE58904886D1 (en) 1993-08-19
JPH01246073A (en) 1989-10-02
EP0328482A2 (en) 1989-08-16

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