EP0828572A1 - Process for producing annular work pieces from metal with a profiled cross-section and a rolling facility for carrying out the method - Google Patents

Process for producing annular work pieces from metal with a profiled cross-section and a rolling facility for carrying out the method

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Publication number
EP0828572A1
EP0828572A1 EP96917434A EP96917434A EP0828572A1 EP 0828572 A1 EP0828572 A1 EP 0828572A1 EP 96917434 A EP96917434 A EP 96917434A EP 96917434 A EP96917434 A EP 96917434A EP 0828572 A1 EP0828572 A1 EP 0828572A1
Authority
EP
European Patent Office
Prior art keywords
die
tools
workpiece
feed direction
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
Application number
EP96917434A
Other languages
German (de)
French (fr)
Other versions
EP0828572B1 (en
Inventor
Klaus-Peter Anderheyden
Frank Siewert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WDB Ringwalztechnik GmbH
Original Assignee
WDB Ringwalztechnik GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from DE19525868A external-priority patent/DE19525868A1/en
Application filed by WDB Ringwalztechnik GmbH filed Critical WDB Ringwalztechnik GmbH
Publication of EP0828572A1 publication Critical patent/EP0828572A1/en
Application granted granted Critical
Publication of EP0828572B1 publication Critical patent/EP0828572B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/28—Making machine elements wheels; discs
    • B21K1/30—Making machine elements wheels; discs with gear-teeth
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H1/00—Making articles shaped as bodies of revolution
    • B21H1/06—Making articles shaped as bodies of revolution rings of restricted axial length
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J13/00—Details of machines for forging, pressing, or hammering
    • B21J13/08—Accessories for handling work or tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J9/00—Forging presses
    • B21J9/02—Special design or construction
    • B21J9/025—Special design or construction with rolling or wobbling dies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H5/00—Making gear wheels, racks, spline shafts or worms
    • B21H5/02—Making gear wheels, racks, spline shafts or worms with cylindrical outline, e.g. by means of die rolls

Definitions

  • the invention relates to a method according to the preamble of claim 1 and an apparatus for performing this method.
  • a generic method is known from DE 37 18 884 A1, in which the workpieces are formed exclusively by pressing.
  • the very large contact area results in very high die loads, which have a negative effect on the service life (elastic deformation, spring-back, crack formation). Accordingly, complex matrix prestresses are necessary.
  • the necessary operations such as loading, ejecting, swiveling, cleaning, lubricating and cooling can usually only be carried out one after the other. This naturally leads to a very high cycle time.
  • the application of the AGW method according to the invention with tools inclined relative to one another for the production of ring-shaped workpieces with external or spur gear toothing makes it possible for only part of the ring surface of the workpiece to be acted upon during rolling, so that considerably lower contact forces have to be applied.
  • the toothing is generated exclusively by the material flowing radially into the toothed, self-rotating, also flowing die.
  • the rolled profile of the two rotating tools is not required to produce this toothing.
  • the die can be handled independently of the two rotating tools. According to the invention, it can be connected to the blank of the workpiece outside the rolling station and then transported between the two separated tools and, after the rolling process and the retraction of the tools, can be removed from the working area of the rollers together with the finished workpiece.
  • the actual rolling station thus has a considerably simpler construction, in that, among other things, the device for ejecting the finished workpiece directly at the rolling station can be dispensed with.
  • the partial deformation of the workpiece ring means that much less force is required to press the material radially into the die.
  • Another advantage of the method according to the invention is that by simply changing the symmetry conditions on the tools, different and asymmetrical cross sections of the workpiece can be produced. By changing the die, which is easy to manufacture, the type of toothing can be changed in a simple manner.
  • Fig. 1 shows in section the rolling station according to the invention
  • Fig. 2 shows a schematic top view of the arrangement of the three
  • FIG. 3 shows a side view of FIG. 2.
  • the two tools 1 and 2 are inclined by the angle ⁇ relative to the feed direction 12, while the axial line of symmetry 11 of the workpiece 10 runs perpendicular to the feed direction 12.
  • the workpiece 10 is held in the die 5, which in turn is rotatably mounted in the end 3 of the swivel arm 15 via the roller bearing 4.
  • the tooth gaps of the die are closed axially upwards and downwards by the two closing devices 6 and 7, the lower one being fixed relative to the die 5, the upper one being elastically coupled to the upper tool 2 via the spring 9 and being moved therewith after rolling .
  • the deformation of the workpiece 10 is determined by the profiles of the workpieces 1 and 2, which are moved towards one another in the feed direction 12 until the final shape of the workpiece 10 is reached and in particular the material has flowed into the cavities of the die 5 in the radial direction.
  • the upper tool 2 has at its end a cylindrical mandrel 13 which projects into a corresponding recess in the lower tool 1 and is guided there.
  • the rolling station W is shown schematically in accordance with FIG. 1, wherein a swivel arm 15 of the carrier 14 is arranged in the rolling station and can be held there by means of the clamping device 16.
  • the two further swivel arms 15 are located in the unloading station E and the loading station B.
  • holding plates 18 are arranged below and above the swivel arm, which hold the die 5 in place when the workpiece is removed with the ejector 17 and an ejecting device.
  • the lower tool 21 is fixed in the feed direction 20 so that only the upper tool 22 is fed.
  • the die 25 with the bearing 24 and the bearing ring 23 is floating with a slide guide 26 in the frame 27.
  • the axial line of symmetry 11 by the angle ⁇ inclined with respect to the horizontal while the upper tool is arranged with its axis of rotation inclined by the angle 2 ⁇ relative to the vertical or ⁇ relative to the feed direction 20.
  • the die 5 is lubricated and then the blank of the workpiece 10 and the die 5 are joined, the blank being e.g. is pressed with a hydraulic device.
  • the die and workpiece are pivoted on the swivel arm 15 into the rolling station.
  • the clamping device 16 With the clamping device 16, the outer end 3 of the swivel arm 15 is held.
  • the die Before the tools 1 and 2 are delivered, the die is accelerated to the speed of the constantly rotating tools with an auxiliary drive 8.
  • the clamping device After completing the rolling process and moving the tools apart, the clamping device is released and the die is swiveled by a further 120 degrees using the swivel arm, and the die is braked simultaneously or subsequently.
  • the workpiece 10 is released from the die with the ejector 17, if necessary with helical teeth with simultaneous rotary movement.
  • the device can then be cleaned and, if necessary, cooled before it can be loaded again.
  • Waizstation according to the invention can be used both as shown in the figures with an essentially vertical feed direction, but also in an embodiment tilted by 90 degrees.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

The invention concerns a process for manufacturing annular work pieces from metal with a profiled cross-section, preferably with external helical gearing, and a rolling facility for carrying out the method. It is proposed that a) forming should be done with two rotating tools; b) the latter should be configured preferably at the same angle to the work piece; c) at least one tool should be fed perpendicularly to the work piece; and d) the die in a mount which is fixed at least axially should rotate about an axis of rotation extending in the tool feed direction. The rolling facility consists of a) two tools (1, 2, 21, 22) which are inclined relative to the work piece (10) preferably at the same angle, at least one tool (1, 2, 21) being capable of displacement in the tool feed direction (12, 20); b) a die (5) with inner gearing which with a closure device forms a closed chamber for the work piece, the die depth matching the width of the teeth; and c) a mount which is fixed at least axially and in which the die (5) is mounted so as to be capable of rotating about an axis extending in the tool feed direction (12, 20).

Description

Verfahren zum Herstellen von ringförmigen Werkstücken aus Metall mit profiliertem Querschnitt und Walzwerk zu dessen Durchführung Process for producing ring-shaped workpieces made of metal with a profiled cross section and rolling mill for carrying them out
Beschreibung:Description:
Die Erfindung bezieht sich auf ein Verfahren gemäß Oberbegriff des Anspruches 1 und eine Vorrichtung zur Durchführung dieses Verfahrens.The invention relates to a method according to the preamble of claim 1 and an apparatus for performing this method.
Aus der DE 37 18 884 A1 ist ein gattungsgemäßes Verfahren bekannt, bei dem die Werkstücke ausschließlich durch Pressen umgeformt werden. Hierbei ergeben sich durch die sehr große Berührungsfläche sehr hohe Matrizenbelastungen, die sich negativ auf die Standzeit auswirken (elastische Verformung, Auffederung, Rißbildung). Entsprechend sind hierbei aufwendige Matrizenvorspannungen notwendig. Außerdem können bei diesen Pressen die erforderlichen Arbeitsvorgänge wie Beladen, Ausstoßen, Ausschwenken, Reinigen, Schmieren und Kühlen in der Regel nur nacheinander ausgeführt werden. Das führt zu einer naturgemäß sehr hohen Taktzeit.A generic method is known from DE 37 18 884 A1, in which the workpieces are formed exclusively by pressing. The very large contact area results in very high die loads, which have a negative effect on the service life (elastic deformation, spring-back, crack formation). Accordingly, complex matrix prestresses are necessary. In addition, with these presses the necessary operations such as loading, ejecting, swiveling, cleaning, lubricating and cooling can usually only be carried out one after the other. This naturally leads to a very high cycle time.
Aus der DE-OS 26 11 568 ist weiterhin ein Verfahren zum Herstellen von ringförmigen Werkstücken mit stark profiliertem Querschnitt und ein Walzwerk zu dessen Durchführung bekannt, wobei zwei gegeneinander zustellbare und im Winkel gegeneinander geneigte Walzen, von denen zumindest eine angetrieben ist, das Negativ des zu walzenden Profiles aufweisen. Bei diesem sogenannten axialen Gesenkwalzen (AGW) ist allerdings nicht die Herstellung einer Außen- bzw. Stirnradverzahnung vorgesehen und es fehlt naturgemäß eine Matrize mit Zahnprofil. Der Erfindung liegt die Aufgabe zugrunde, ein gattungsgemäßes Verfahren und eine Vorrichtung zur Durchführung dieses Verfahrens vorzuschlagen, bei dem die beim Pressen auftretenden hohen Belastungen vermieden werden und die Taktzeiten verringert werden können.From DE-OS 26 11 568 a method for producing ring-shaped workpieces with a strongly profiled cross-section and a rolling mill for carrying it out is also known, wherein two mutually deliverable and inclined rollers, at least one of which is driven, the negative of the to be rolled profile. In this so-called axial die rolling (AGW), however, the production of an external or spur gear toothing is not provided, and a die with a tooth profile is naturally missing. The invention has for its object to propose a generic method and an apparatus for performing this method, in which the high loads occurring during pressing can be avoided and the cycle times can be reduced.
Die Lösung dieser Aufgabe ist im Kennzeichen der Ansprüche 1 und 9 angegeben. Die Unteransprüche 2 bis 8 enthalten ergänzende Verfahrensvorschläge. In den Unteransprüchen 10 bis 15 sind zusätzliche Ausführungsformen der erfindungsgemäßen Vorrichtung beschrieben.The solution to this problem is specified in the characterizing part of claims 1 and 9. Subclaims 2 to 8 contain additional procedural proposals. Additional embodiments of the device according to the invention are described in subclaims 10 to 15.
Die erfindungsgemäße Anwendung des AGW-Verfahrens mit gegeneinander schräggestellten Werkzeugen zur Herstellung von ringförmigen Werkstücken mit Außen- bzw. Stirnradverzahnung ermöglicht es, daß beim Walzen jeweils nur ein Teil der Ringfläche des Werkstückes beaufschlagt wird, so daß erheblich geringere Anpreßkräfte aufzubringen sind. Die Verzahnung wird ausschließlich dadurch erzeugt, daß der Werkstoff radial in die verzahnte eigenständig gelagert, ebenfalls rotierende Matrize fließt. Das Walzprofil der beiden rotierenden Werkzeuge wird zur Herstellung dieser Verzahnung nicht benötigt. Die Matrize ist unabhängig von den beiden rotierenden Werkzeugen zu handhaben. Sie kann erfindungsgemäß außerhalb der Walzstation mit dem Rohling des Werkstückes verbunden werden und dann zwischen die beiden auseinandergefahrenen Werkzeuge transportiert werden und nach Beendigung des Walzvorganges und dem Zurückfahren der Werkzeuge gemeinsam mit dem fertigen Werkstück aus dem Arbeitsbereich der Walzen wieder entfernt werden. Es hat sich erfindungsgemäß als besonders günstig erwiesen, die Matrize in einer axial ortsfesten Lagereinheit drehbar zu lagern und die Lagereinheit auf dem Schwenkarm eines drehbaren Trägers anzuordnen, so daß die Matrize durch eine einfache Schwenkbewegung in die Walzstation hinein und aus ihr wieder heraus bewegt werden kann. Zweckmäßig ist es dabei, drei radial angeodnete Schwenkarme gleichmäßig am Umfang verteilt am Träger anzuordnen, so daß an drei verschiedenen Stationen gleichzeitig die Vorgänge Walzen, Beladen und Entladen des Werkstücks sowie zusätzlich die Wartungsvorgänge, Reinigen, Schmieren und Kühlen stattfinden können. Durch diese Entkopplung der Vorgänge kann die Taktzeit erheblich verringert werden, da insbesondere das Be- und Entladen nicht mehr in der eigentlichen Umformstation stattfindet. Die eigentliche Walzstation besitzt damit einen erheblich einfacheren Aufbau, dadurch daß unter anderem auf die Vorrichtung zum Ausstoßen des fertigen Werkstückes direkt an der Walzstation verzichtet werden kann. Außerdem wird durch die jeweils nur partielle Umformung des Werkstückringes sehr viel weniger Kraft benötigt, um den Werkstoff in radialer Richtung in die Matrize zu drücken.The application of the AGW method according to the invention with tools inclined relative to one another for the production of ring-shaped workpieces with external or spur gear toothing makes it possible for only part of the ring surface of the workpiece to be acted upon during rolling, so that considerably lower contact forces have to be applied. The toothing is generated exclusively by the material flowing radially into the toothed, self-rotating, also flowing die. The rolled profile of the two rotating tools is not required to produce this toothing. The die can be handled independently of the two rotating tools. According to the invention, it can be connected to the blank of the workpiece outside the rolling station and then transported between the two separated tools and, after the rolling process and the retraction of the tools, can be removed from the working area of the rollers together with the finished workpiece. It has proven to be particularly advantageous according to the invention to mount the die rotatably in an axially stationary bearing unit and to arrange the bearing unit on the swivel arm of a rotatable carrier so that the die can be moved into and out of the rolling station by a simple pivoting movement . It is useful to have three radial Arranged arranged swivel arms evenly distributed around the circumference on the carrier, so that the processes of rolling, loading and unloading of the workpiece and additionally the maintenance processes, cleaning, lubrication and cooling can take place simultaneously at three different stations. This decoupling of the processes enables the cycle time to be reduced considerably, since in particular loading and unloading no longer takes place in the actual forming station. The actual rolling station thus has a considerably simpler construction, in that, among other things, the device for ejecting the finished workpiece directly at the rolling station can be dispensed with. In addition, the partial deformation of the workpiece ring means that much less force is required to press the material radially into the die.
Ein weiterer Vorteil des erfindungsgemäßen Verfahrens liegt darin, daß durch einfache Veränderung der Symmetriebedingungen an den Werkzeugen verschiedene auch asymmetrische Querschnitte des Werkstückes hergestellt werden können. Durch Auswechslung der einfach herzustellenden Matrize kann vor allen Dingen die Art der Verzahnung auf einfache Art und Weise verändert werden.Another advantage of the method according to the invention is that by simply changing the symmetry conditions on the tools, different and asymmetrical cross sections of the workpiece can be produced. By changing the die, which is easy to manufacture, the type of toothing can be changed in a simple manner.
Die Erfindung wird anhand der beigefügten Figuren 1 bis 4 beispielsweise näher erläutert.The invention is explained in more detail, for example, with the aid of the attached FIGS. 1 to 4.
Fig. 1 zeigt im Schnitt die erfindungsgemäße WalzstationFig. 1 shows in section the rolling station according to the invention
Fig. 2 zeigt schematisch in der Draufsicht die Anordnung der dreiFig. 2 shows a schematic top view of the arrangement of the three
Stationen für Walzen (W), Entladen (E) und Beladen (B) Fig. 3 zeigt eine Seitenansicht zu Fig. 2 Fig. 4 zeigt schematisch eine Walzeinrichtung mit nur einseitiger Zustellung über das obere Werkzeug 22. Gemäß Fig. 1 sind die beiden Werkzeuge 1 und 2 um den Winkel α gegenüber der Zustellrichtung 12 geneigt angeordnet, während die axiale Symmetrielinie 11 des Werkstückes 10 senkrecht zur Zustellrichtung 12 verläuft. Das Werkstück 10 wird in der Matrize 5 gehalten, die wiederum über das Rollenlager 4 in dem Ende 3 des Schwenkarmes 15 drehbar gelagert ist. Die Zahnlücken der Matrize werden axial nach oben und unten durch die beiden Schließvorrichtungen 6 und 7 geschlossen, wobei die untere gegenüber der Matrize 5 fixiert ist, die obere über die Feder 9 mit dem oberen Werkzeug 2 elastisch gekoppelt ist und nach dem Walzen mit diesem verfährt. Die Verformung des Werkstückes 10 wird bestimmt durch die Profile der Werkstücke 1 und 2, die in Zustellrichtung 12 aufeinander zubewegt werden, bis die endgültige Form des Werkstückes 10 erreicht ist und insbesondere der Werkstoff in radialer Richtung in die Hohlräume der Matrize 5 geflossen ist. Das obere Werkzeug 2 besitzt an seinem Ende einen zylinderförmigen Dorn 13, der in eine entsprechende Aussparung des unteren Werkzeuges 1 hineinragt und dort geführt wird.Stations for rollers (W), unloading (E) and loading (B). FIG. 3 shows a side view of FIG. 2. 1, the two tools 1 and 2 are inclined by the angle α relative to the feed direction 12, while the axial line of symmetry 11 of the workpiece 10 runs perpendicular to the feed direction 12. The workpiece 10 is held in the die 5, which in turn is rotatably mounted in the end 3 of the swivel arm 15 via the roller bearing 4. The tooth gaps of the die are closed axially upwards and downwards by the two closing devices 6 and 7, the lower one being fixed relative to the die 5, the upper one being elastically coupled to the upper tool 2 via the spring 9 and being moved therewith after rolling . The deformation of the workpiece 10 is determined by the profiles of the workpieces 1 and 2, which are moved towards one another in the feed direction 12 until the final shape of the workpiece 10 is reached and in particular the material has flowed into the cavities of the die 5 in the radial direction. The upper tool 2 has at its end a cylindrical mandrel 13 which projects into a corresponding recess in the lower tool 1 and is guided there.
In den Fig. 2 und 3 ist die Walzstation W entsprechend Fig. 1 schematisch dargestellt, wobei ein Schwenkarm 15 des Träger 14 in der Walzstation angeordnet ist und dort über die Klemmvorrichtung 16 festgehalten werden kann. Die beiden weiteren Schwenkarme 15 befinden sich in der Entladestation E und der Beladestation B. Dort sind unter- und oberhalb des Schwenkarmes Halteplatten 18 angeordnet, die die Matrize 5 festhalten, wenn das Werkstück mit dem Ausstoßer 17 und einer Ausschiebevorrichtung entfernt wird.2 and 3, the rolling station W is shown schematically in accordance with FIG. 1, wherein a swivel arm 15 of the carrier 14 is arranged in the rolling station and can be held there by means of the clamping device 16. The two further swivel arms 15 are located in the unloading station E and the loading station B. There, holding plates 18 are arranged below and above the swivel arm, which hold the die 5 in place when the workpiece is removed with the ejector 17 and an ejecting device.
In Fig. 4 ist das untere Werkzeug 21 in Zustellrichtung 20 fest angeordnet, so daß nur das obere Werkzeug 22 zugestellt wird. Hierzu ist die Matrize 25 mit dem Lager 24 und dem Lagerring 23 schwimmend mit einer Gleitführung 26 in dem Gestell 27 gelagert. Bei senkrechter Drehachse des unteren Werkzeuges 21 ist die axiale Symmetrielinie 11 um den Winkel ß gegenüber der waagerechten geneigt, während das obere Werkzeug mit seiner Drehachse um den Winkel 2 ß gegenüber der Senkrechten bzw. ß gegenüber der Zustellrichtung 20 geneigt angeordnet ist. Bei dem erfindungsgemäßen Verfahren finden im wesentlichen folgende Arbeitsabläufe statt:In Fig. 4, the lower tool 21 is fixed in the feed direction 20 so that only the upper tool 22 is fed. For this purpose, the die 25 with the bearing 24 and the bearing ring 23 is floating with a slide guide 26 in the frame 27. With a vertical axis of rotation of the lower tool 21, the axial line of symmetry 11 by the angle β inclined with respect to the horizontal, while the upper tool is arranged with its axis of rotation inclined by the angle 2 β relative to the vertical or β relative to the feed direction 20. The following workflows essentially take place in the method according to the invention:
1. In der Beladestation B wird die Matrize 5 geschmiert und danach der Rohling des Werkstückes 10 und die Matrize 5 zusammengefügt, wobei der Rohling z.B. mit einer Hydraulikvorrichtung angepreßt wird.1. In the loading station B the die 5 is lubricated and then the blank of the workpiece 10 and the die 5 are joined, the blank being e.g. is pressed with a hydraulic device.
2. Wenn der Träger 14 um seine Drehachse 28 um 120 Grad gedreht wird, werden Matrize und Werkstück auf dem Schwenkarm 15 in die Walzstation geschwenkt. Mit der Klemmvorrichtung 16 wird das äußere Ende 3 des Schwenkarmes 15 festgehalten. Vor Zustellung der Werkzeuge 1 und 2 wird die Matrize mit einem Hilfsantrieb 8 auf die Drehzahl der sich ständig drehenden Werkzeuge beschleunigt. Nach Beendigung des Walzvorganges und Auseinanderfahren der Werkzeuge wird die Klemmvorrichtung gelöst und die Matrize mit Hilfe des Schwenkarmes um weitere 120 Grad geschwenkt und gleichzeitig bzw. anschließend die Matrize abgebremst.2. When the carrier 14 is rotated about its axis of rotation 28 by 120 degrees, the die and workpiece are pivoted on the swivel arm 15 into the rolling station. With the clamping device 16, the outer end 3 of the swivel arm 15 is held. Before the tools 1 and 2 are delivered, the die is accelerated to the speed of the constantly rotating tools with an auxiliary drive 8. After completing the rolling process and moving the tools apart, the clamping device is released and the die is swiveled by a further 120 degrees using the swivel arm, and the die is braked simultaneously or subsequently.
3. In der Entladestation wird das Werkstück 10 mit dem Ausstoßer 17 ggf. bei einer Schrägverzahnung mit gleichzeitiger Drehbewegung aus der Matrize gelöst. Anschließend kann die Einrichtung gereinigt und ggf. gekühlt werden, bevor sie wieder zur neuen Beladung gelangt.3. In the unloading station, the workpiece 10 is released from the die with the ejector 17, if necessary with helical teeth with simultaneous rotary movement. The device can then be cleaned and, if necessary, cooled before it can be loaded again.
Die erfindungsgemäße Waizstation kann sowohl wie in den Figuren dargestellt mit im wesentlichen senkrechter Zustellrichtung aber auch in einer um 90 Grad dazu gekippten Ausführung verwendet werden. Bezugszeichenliste:The Waizstation according to the invention can be used both as shown in the figures with an essentially vertical feed direction, but also in an embodiment tilted by 90 degrees. Reference symbol list:
1 unteres Werkzeug1 lower tool
2 oberes Werkzeug2 top tool
3 äußere Ende von 15 4 Lager3 outer ends of 15 4 bearings
5 Matrize5 die
6,7 Schließvorrichtung6.7 locking device
8 Hilfsantrieb8 auxiliary drive
9 Feder 10 Werkstück9 spring 10 workpiece
11 axiale Symmetrielinie von 1011 axial line of symmetry of 10
12 Zustellrichtung von 1 und 2 (senkrecht zu 11)12 infeed direction of 1 and 2 (perpendicular to 11)
13 Dorn an 213 thorn on 2
14 Träger mit Drehantrieb 15 Schwenkarm14 carrier with rotary drive 15 swivel arm
16 Klemmvorrichtung für 316 clamping device for 3
17 Ausstoßvorrichtung für 1017 ejection device for 10
18 Halteplatten18 holding plates
20 Zustellrichtung von 22 21 unteres Werkzeug (ohne Zustellung)20 infeed direction of 22 21 lower tool (without infeed)
22 oberes Werkzeug (mit Zustellung)22 upper tool (with infeed)
23 Lagerring23 bearing ring
24 Lager24 bearings
25 schwimmend gelagerte Matrize 26 Gleitführung25 floating die 26 sliding guide
27 Gestell27 frame
28 Drehachse von 14 α Winkel zwischen 12 und 1/2 ß Winkel zwischen 11 und der waagerechten Ebene W Walzstation28 axis of rotation of 14 α angle between 12 and 1/2 ß angle between 11 and the horizontal plane W rolling station
E Entladestation (eventuell zusätzlich Reinigen und Kühlen)E unloading station (possibly additional cleaning and cooling)
B Beladestation (eventuell zusätzlich Schmieren plus Kühlen) B loading station (possibly additional lubrication plus cooling)

Claims

Patentansprüche: Claims:
1. Verfahren zum Herstellen von ringförmigen Werkstücken aus Metall, vorzugsweise Stahl mit profiliertem Querschnitt, vorzugsweise mit außenliegender Schrägverzahnung, wobei von einem Rohteil ausgegangen wird, dessen Außendurchmesser etwa dem Fußkreisdurchmesser der Verzahnung entspricht und der Werkstoff radial in eine verzahnte Matrize fließt, die zusammen mit einer1.Procedure for producing ring-shaped workpieces made of metal, preferably steel with a profiled cross section, preferably with external helical teeth, starting from a raw part whose outer diameter corresponds approximately to the root diameter of the toothing and the material flows radially into a toothed die, which flows together with one
Schließvorrichtung einen geschlossenen Raum bildet und wobei die Matrizentiefe der Zahnbreite entspricht, dadurch gekennzeichnet, daß a) das Umformen durch zwei rotierende Werkzeuge geschieht, die, b) vorzugsweise in gleichem Winkel, zum Werkstück geneigt angeordnet sind, wobei c) mindestens ein Werkzeug senkrecht zum Werkstück zugestellt wird und d) die Matrize in einer zumindest axial ortsfesten Lagereinheit um eine in Zustellrichtung verlaufende Drehachse rotiert.Locking device forms a closed space and the die depth corresponds to the tooth width, characterized in that a) the shaping is carried out by two rotating tools which, b) are preferably inclined at an angle to the workpiece, c) at least one tool perpendicular to the Workpiece is fed and d) the die rotates in an at least axially stationary bearing unit about an axis of rotation extending in the feed direction.
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß Rohteil und Matrize außerhalb des Arbeitsbereiches der rotierenden Werkzeuge zusammengefügt und/oder getrennt werden und mit der Lagereinheit in den bzw. aus dem Arbeitsbereich bewegbar sind.2. The method according to claim 1, characterized in that the blank and the die are assembled and / or separated outside the working area of the rotating tools and can be moved into and out of the working area with the bearing unit.
3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Lagereinheit um eine in Zustellrichtung verlaufende Achse drehbar ist.3. The method according to claim 1 or 2, characterized in that the bearing unit is rotatable about an axis extending in the feed direction.
4. Verfahren nach mindestens einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Lagereinheit während des Walzvorganges ortsfest gehalten wird. 4. The method according to at least one of claims 1 to 3, characterized in that the bearing unit is held stationary during the rolling process.
5. Verfahren nach mindestens einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß während des Walzvorganges in zusätzlichen, vorzugsweise zwei, Lagereinheiten und/oder Matrizen das Be- und Entladen der Werkstücke sowie die Wartungsvorgänge vorgenommen werden.5. The method according to at least one of claims 1 to 4, characterized in that the loading and unloading of the workpieces and the maintenance processes are carried out during the rolling process in additional, preferably two, storage units and / or dies.
6. Verfahren nach Anspruch 5, dadurch gekennzeichnet, daß die Matrizen vor dem Walzvorgang auf die Drehzahl der Werkzeuge beschleunigt und/oder nach dem Walzen abgebremst werden.6. The method according to claim 5, characterized in that the dies are accelerated to the speed of the tools before the rolling process and / or braked after rolling.
7. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, daß die Antriebe der beiden rotierenden Werkzeuge synchronisiert sind.7. The method according to claim 1, characterized in that the drives of the two rotating tools are synchronized.
8. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, daß die Drehzahlen der beiden Werkzeuge entsprechend den Symmetriebedingungen des Werkstückes variiert werden.8. The method according to claim 1, characterized in that the speeds of the two tools are varied according to the symmetry conditions of the workpiece.
9. Walzwerk zur Durchführung des Verfahrens nach mindestens einem der vorhergehenden Ansprüche bestehend aus a) zwei, vorzugsweise mit gleichem Winkel, zum Werkstück (10) geneigt angeordneten, um ihre Längsachse rotierenden Werkzeugen (1 ,2,21 ,22), wobei mindestens ein Werkzeug (1 ,2,21) in Zustellrichtung (12,20) bewegbar ist, b) einer Matrize (5) mit Innenverzahnung, die zusammen mit einer9. Rolling mill for performing the method according to at least one of the preceding claims consisting of a) two, preferably at the same angle, to the workpiece (10) arranged inclined to rotate about its longitudinal axis tools (1, 2.21, 22), at least one Tool (1, 2.21) in the feed direction (12.20) is movable, b) a die (5) with internal teeth, which together with a
Schließvorrichtung einen geschlossenen Raum für das Werkstück bildet, wobei die Matrizentiefe der Zahnbreite entspricht und c) einer zumindest axial ortsfesten Lagereinheit, in der die Matrize (5) um eine in Zustellrichtung (12,20) verlaufende Achse drehbar gelagert ist. Closing device forms a closed space for the workpiece, the die depth corresponding to the tooth width and c) an at least axially stationary bearing unit in which the die (5) is rotatably mounted about an axis running in the feed direction (12, 20).
10. Walzwerk nach Anspruch 9, dadurch gekennzeichnet, daß die Lagereinheit über einen Schwenkarm (15) mit einem Träger (14) verbunden ist.10. Rolling mill according to claim 9, characterized in that the bearing unit is connected via a swivel arm (15) to a carrier (14).
11. Walzwerk nach Anspruch 9 oder 10, dadurch gekennzeichnet, daß der Träger (14) um eine in Zustellrichtung (12,20) verlaufende Achse (28) drehbar gelagert ist und, vorzugsweise drei, gleichmäßig am Umfang verteilt angeordnete Schwenkarme (15) trägt.11. Rolling mill according to claim 9 or 10, characterized in that the carrier (14) is rotatably mounted about an axis (28) extending in the feed direction (12, 20) and preferably carries three pivot arms (15) which are distributed uniformly around the circumference .
12. Walzwerk nach mindestens einem der Ansprüche 9 bis 11 , dadurch gekennzeichnet, daß bei Zustellung nur eines Werkzeuges (22) die Matrize (25) schwimmend gelagert ist.12. Rolling mill according to at least one of claims 9 to 11, characterized in that upon delivery of only one tool (22) the die (25) is floating.
13. Walzwerk nach mindestens einem der vorhergehenden Vorrichtungsansprüche, dadurch gekennzeichnet, daß die beiden13. Rolling mill according to at least one of the preceding device claims, characterized in that the two
Werkzeuge (1 ,2) einen gemeinsamen Antrieb besitzen mit axialkraftfreier Verzahnung, vorzugsweise aus an sich bekannten Kronenrädern.Tools (1, 2) have a common drive with toothing free of axial force, preferably from crown wheels known per se.
14. Walzwerk nach mindestens einem der vorhergehenden14. Rolling mill according to at least one of the preceding
Vorrichtungsansprüche, dadurch gekennzeichnet, daß eines der beiden Werkzeuge (1 ,2) am werkstückseitigen Ende einen kegel- oder zylinderförmigen Dorn (13) besitzt, der in eine entsprechende Aussparung des gegenüberliegenden Werkzeuges hineinragt.Device claims, characterized in that one of the two tools (1, 2) at the workpiece end has a conical or cylindrical mandrel (13) which projects into a corresponding recess in the opposite tool.
15. Walzwerk nach mindestens einem der vorhergehenden15. Rolling mill according to at least one of the preceding
Vorrichtungsansprüche, dadurch gekennzeichnet, daß die Matrize (5) einen mit dem Schwenkarm (15) und/oder dem Träger (14) verbundenen Hilfsantrieb (8) besitzt. Device claims, characterized in that the die (5) has an auxiliary drive (8) connected to the swivel arm (15) and / or the carrier (14).
EP96917434A 1995-05-30 1996-05-25 Process for producing annular work pieces from metal with a profiled cross-section and a rolling facility for carrying out the method Expired - Lifetime EP0828572B1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE19519142 1995-05-30
DE19519142 1995-05-30
DE19525868 1995-07-15
DE19525868A DE19525868A1 (en) 1995-05-30 1995-07-15 Process for producing ring-shaped workpieces made of metal with a profiled cross section and rolling mill for carrying them out
PCT/EP1996/002261 WO1996038241A1 (en) 1995-05-30 1996-05-25 Process for producing annular work pieces from metal with a profiled cross-section and a rolling facility for carrying out the method

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EP0828572A1 true EP0828572A1 (en) 1998-03-18
EP0828572B1 EP0828572B1 (en) 1998-12-30

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EP (1) EP0828572B1 (en)
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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1080151C (en) * 1999-09-13 2002-03-06 杨嘉钦 Static-pressure forge technology for cast wheel
DE10100868B4 (en) 2001-01-11 2008-01-17 Sms Eumuco Gmbh Cold rolling forming machine and tool for making flange-shaped products or flanges from a cylindrical precursor
CN105414422B (en) * 2015-12-03 2017-07-11 常州和仕达机械装备制造有限公司 A kind of axial enclosed calendering forming technique of gear

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1986072A (en) * 1931-06-18 1935-01-01 Schlas Friedrich Im Device for the manufacture of shaped pieces from annular blanks
FR1560758A (en) * 1967-07-01 1969-03-21
US3822574A (en) * 1973-04-02 1974-07-09 A Krupin Ring-rolling mill
DE2504969A1 (en) * 1975-02-06 1976-08-19 Horst Schenk Annular workpiece rolling mill - forms blank in revolving guide by radially acting mandrel roll and axial rolls
DE2715611A1 (en) * 1977-04-07 1978-10-12 Thyssen Industrie RING ROLLING MACHINE
GB2041268B (en) * 1979-02-01 1982-11-17 City University And Worshipful Rotary forging machine
US4291559A (en) * 1979-07-30 1981-09-29 Martin Charles F Sheave making apparatus and method
JPS6221439A (en) * 1985-07-18 1987-01-29 Kobe Steel Ltd Rotary forging device
SU1750805A1 (en) * 1989-11-09 1992-07-30 Производственное объединение "Нижегородский машиностроительный завод" Apparatus for end rolling off parts with central cavity
SU1736662A1 (en) * 1990-01-09 1992-05-30 Научно-исследовательский институт металлургической технологии End rolling tool set
JPH06304693A (en) * 1993-04-26 1994-11-01 Reizu Eng:Kk Manufacture of gear
JP2891048B2 (en) * 1993-08-11 1999-05-17 日産自動車株式会社 Mold for rotary forging

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9638241A1 *

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JPH11505769A (en) 1999-05-25
EP0828572B1 (en) 1998-12-30
WO1996038241A1 (en) 1996-12-05
US5946959A (en) 1999-09-07
JP3382948B2 (en) 2003-03-04

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