EP1909990B1 - Method and device for producing metal rings - Google Patents

Method and device for producing metal rings Download PDF

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Publication number
EP1909990B1
EP1909990B1 EP06762038A EP06762038A EP1909990B1 EP 1909990 B1 EP1909990 B1 EP 1909990B1 EP 06762038 A EP06762038 A EP 06762038A EP 06762038 A EP06762038 A EP 06762038A EP 1909990 B1 EP1909990 B1 EP 1909990B1
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EP
European Patent Office
Prior art keywords
profile
mandrel
tube section
tube
rings
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 - Fee Related
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EP06762038A
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German (de)
French (fr)
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EP1909990A1 (en
Inventor
Torsten Flügge
Erwin Kwasnitza
Lorenz Rinke
Hermann Thau
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.)
Hoerbiger Synchron Technik GmbH and Co KG
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Hoerbiger Synchron Technik GmbH and Co KG
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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
    • B21K1/76—Making machine elements elements not mentioned in one of the preceding groups
    • B21K1/761—Making machine elements elements not mentioned in one of the preceding groups rings
    • 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
    • B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
    • B21J5/12—Forming profiles on internal or external surfaces
    • 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
    • B21K1/76—Making machine elements elements not mentioned in one of the preceding groups

Definitions

  • the present invention relates to a method and an arrangement for producing rings from a tube made of a metallic material, wherein the rings are provided on the inner circumference with an axially continuous inner profile and on the outer circumference with a radial outer profile.
  • Such a method is known, for example from the DE 102 19 441 Cl ,
  • the method described in this document is used for the production of internally and / or externally profiled rings, in particular of rolling bearing rings and gear rings, in a complete ready-to-sand state of tube or solid material.
  • a radial outer profile should be produced by radial-axial profile tube rollers.
  • a pipe section is machined from the outside with a rolling tool.
  • the resulting flow of material is influenced by a counter-pressure tool which acts in the axial direction on the machined pipe section.
  • the flow of material in the axial and radial directions is controllable, so that the evasive material can be included in the formation of the profile.
  • a radial inner profile can be formed at the same time.
  • sliding sleeves is proposed to produce the necessary internal toothing (axial profiling) by cutting in a separate operation, after the foundedachir has been completely rolled ready for grinding.
  • the axial inner profile of the rings can be produced significantly cheaper, namely by kneading. Since the metallic material used to produce the rings must be able to flow within limits anyway because of the rolling process used for producing the radial outer profile, the kneading method for producing the axial inner profile is generally applicable.
  • kneading is to be understood broadly herein and is intended to include all similar and alternative methods in which material is intermittently pressed into the profile of the profile mandrel by radial and / or axial pressure.
  • the rings according to the invention may in particular be sliding sleeves or coupling bodies, as used in transmissions.
  • the material flow may optionally be controllable from both axial sides close to the rolling tool.
  • the rolling step c) is preferably carried out on the inside profiled pipe section, wherein finished rings are subsequently separated.
  • the handling is advantageous because a large number of items only arises when the rings are completed.
  • the tube is moved in the kneading step b) relative to the kneading tool in the axial direction.
  • the axial inner profile can be formed in a continuous operation on the pipe section.
  • the kneading tool moves relative to the tube.
  • the mandrel outer profile of the first profile mandrel is shorter than the length of the pipe section, wherein the first profile mandrel is floating and wherein the pipe section is moved in the kneading step b) in the axial direction relative to the first profile mandrel.
  • the length of the tube section, on which the axial inner profile is formed in one piece can be made comparatively long, for example 50 to 70 cm.
  • the utilizable portion of an outlet tube can thus be significantly increased since the length of the profiled tube section becomes greater in relation to the length of the clamping of the tube, which is usually necessary.
  • the first profile mandrel is supported in the kneading step b) in the axial direction and thus remains substantially stationary with respect to the kneading tool.
  • a support can take place in the axial direction, preferably in the direction of movement of the pipe section relative to the first profile mandrel.
  • a second profile mandrel is arranged in the pipe section or ring.
  • the rolling step can be carried out without a material flow affecting the integrity of the already produced inner profile.
  • an axial counterforce is generated on the pipe section or the ring, against the flow direction of the material produced by the rolling tools, so as to increase the material flow in the axial and / or or radial direction to control.
  • the mandrel outer profile of the first profile mandrel is about as long or at least as long as the pipe section, wherein the first profile mandrel in the kneading step b) is moved in the axial direction together with the tube or moves relative to the kneading tool.
  • the axial inner profile is made by external kneading tools by a material flow is generated in the radial outer profile of the profile mandrel inside.
  • no relative speed between the profile mandrel and the pipe section is present, so that the manufacturing accuracy can be very high.
  • a counterpressure tool is preferably provided, which has a contact section, by means of which an axial counterforce on the pipe section or the ring against the flow direction caused by the rolling tools of the material can be generated, so as to the flow of material in the axial and / or radial To control direction.
  • the counter-pressure tool is preferably formed integrally with the second profile mandrel.
  • a separating device is furthermore preferably provided for separating individual rings from the pipe section.
  • This may be a separate device, for example, a turning tool or milling tool, grinding tool, saw, etc. for radial parting of the individual tubes.
  • the separating device can be arranged in front of the rolling device in order to supply the rolling device in this way individual, profiled only on the inner circumference rings.
  • the separating device may also be arranged on or after the rolling device in order to separate one ring from the pipe section, which is finished profiled both on the inner circumference and on the outer circumference.
  • FIG. 1 is a cylindrical tube as the starting workpiece for the manufacturing method according to the invention generally designated 10.
  • the output tube 10 is unprofiled on both the inner periphery and the outer periphery, and is made of a metallic material capable of being processed in a kneader and a rolling device.
  • the metallic material is in any case limited flowable, it being understood that the material may be heated during processing.
  • the tube 10 is to be formed in the manufacturing process according to the invention in a plurality of rings, which have on its inner circumference an axial inner profile and on its outer periphery a radial outer profile, in particular shift sleeves for transmission.
  • FIG. 2 shows a schematic longitudinal sectional view through a kneading device 12 of a manufacturing arrangement according to the invention.
  • the kneading device 12 has, in a manner known per se, a kneading tool 14 with kneading jaws 16, which act on the tube 10 radially from the outside.
  • the kneading device 12 is used to provide on the output tube 10 an axial internal profiling, for example in the form of a toothing.
  • a first profile mandrel 20 is mounted in the kneading device 12.
  • the profile mandrel 20 has a comparatively short section in the axial direction with a mandrel outer profile 22.
  • the outer mandrel profile 22 corresponds in shape to the inner profile to be provided on the tube 10.
  • the first profile mandrel 20 has a cone section 24, which is arranged in the axial feed direction 26 in front of the mandrel outer profile.
  • a certain diameter reduction of the output tube 10 and the cone portion 24 is adapted at its axial front end to the inner circumference of the output tube 10, whereas the cone portion is adapted at its rear end to the - reduced - diameter of the mandrel outer profile 22.
  • the first profile mandrel 20 is floating within the tube 10, so remains substantially stationary with respect to the kneading tool 14. In the axial direction 26, the tube 10 is supplied with respect to the kneading device 12. This takes place within the kneading tool 14, the profiling of the inner circumference of the tube 10.
  • the first profile mandrel 20 can be supported in the axial direction of an optional support means 27, in particular to avoid jamming or the like.
  • a pipe section 28 of the tube 10 is provided with the axial inner profile, wherein the pipe section 28 has a significantly greater length than the mandrel outer profile 22 of the first mandrel outer profile.
  • the pipe section 28 may have a length of 50 or 60 cm, possibly even a length of 2 m or more (theoretically infinite).
  • FIG. 3 shows a tube section 30 produced in the kneading device 12, which is formed with an axial inner profile 32.
  • the internally profiled tube section 30 can now be supplied to produce a radial outer profile of a rolling device.
  • FIG. 4 shows a schematic longitudinal sectional view through a rolling device 40 of a manufacturing arrangement according to the invention.
  • the rolling device 40 is downstream of the kneading device 12.
  • an internally profiled pipe section 30 is used as the starting workpiece.
  • a radial outer profile of a ring to be produced is rolled, wherein subsequently the thus completed ring is separated from the internally profiled tube 30, for example by means of a separating device 34a, the in FIG. 4 also indicated schematically.
  • a further portion of the internally profiled pipe section 30 can be rolled to produce a further ring, which is then separated again.
  • the rolling apparatus 40 may basically be constructed and operated as described in the document DE 102 19 441 Cl is described.
  • the rolling apparatus 40 has at least two rolling rollers 42, which are rotatable about axes in a rolling motion 44, wherein the axes are parallel to the longitudinal axis of the clamped pipe section 30.
  • the rolling rollers 42 each exert a radial pressure on the pipe section 30, as indicated schematically at 44.
  • the tube section 30 is clamped at one end by means of a chuck 46 and is rotated about the chuck 46 about its longitudinal axis, as shown schematically at 48.
  • the pipe section 30 has an axial inner profile 32, which during the rolling process as little, ideally not at all, is impaired.
  • a second profile mandrel 50 is provided in the rolling device 40.
  • the second profile mandrel 50 has a first section with an outer profile 52, which corresponds to the axial inner profile of the pipe section 30.
  • the second profile mandrel 50 has a contact portion 54 whose diameter is greater than that of the outer profile 52.
  • the contact portion 54 is in the axial direction at the free end of the pipe section 30 at.
  • the profile mandrel 50 is also movable in the axial direction, as indicated schematically at 56. Therefore, the second profile mandrel 50 is simultaneously formed as a counter pressure tool and adapted to exert on the rolled portion an axial force which is adapted to control the material flow, in the axial direction, as shown at 58, and in the radial direction as shown at 59.
  • a radial outer profile 62 is consequently produced by the rolling machining of a section of the internally profiled tube section 30, namely the radial outer profile for each ring (or alternatively simultaneously for a plurality of rings).
  • the thus completed ring 60 is cut off, by means of the separating device 34a shown schematically.
  • the material flow can be controlled in the axial and / or radial direction, in the end result, a radial outer profile 62 can be generated, the outer circumference may be partially larger than the outer circumference of the only profiled inside Pipe section 30.
  • the axially on the inner circumference and radially profiled on the outer circumference ring 60 may be used for example as a shift sleeve for a motor vehicle transmission.
  • FIG. 5 shows an alternative embodiment of a rolling device 40 '.
  • the rolling device 40 ' corresponds to the structure and operation of the rolling device 40 of the FIG. 4 , In this case, it is merely the case that the rolling device 40 'is designed to roll internally profiled rings 36 which have been separated in advance from an internally profiled tube section 30 (cf. FIG. 3 ).
  • another counterpressure tool 66 may be provided which is axially movable, as shown at 68. This allows the ring to be influenced from both sides to control the material flow.
  • FIG. 6 shows an alternative embodiment of a kneader 12 'for producing an internally profiled pipe section 30'.
  • the kneading device 12 corresponds in terms of structure and operation of the kneading device 12 of FIG. 2 , In the following, only differences will be discussed.
  • the first profile mandrel 20' has a section with a mandrel outer profile 22 ', which corresponds in its length to the pipe section 30' to be formed.
  • the first profile mandrel 20 ' is clamped in a clamping device 70, which is fed together with the tube 10 in the axial direction 26 of the kneading tool 14'.
  • a pipe section 30' is kneaded with an axial inner profile whose length corresponds approximately to the length of the mandrel outer profile 22 'of the first profile mandrel 20'.
  • FIGS. 7 and 8 a coupling body 80 produced according to the method according to the invention is shown.
  • the coupling body 80 is formed with an axial inner profile 32 '' and with a radial outer profile 62 ''
  • the axial inner profile 32 '' is used for sliding onto a corresponding toothing of, for example, a loose wheel of a transmission the coupling body 80 can be fixed well to the idler gear, for example by welding.
  • the radial outer profile 62 '' therefore comprises a radial flange portion.
  • an external toothing region 82 is further formed, on which an external toothing is still formed, into which the internal toothing of a sliding sleeve can be inserted in order to produce a positive connection between the coupling body (and thus the idler gear connected to the coupling body 80) and a transmission shaft. on which the shift sleeve axially displaceable, but rotationally fixed, is mounted.

Abstract

A method and an arrangement for producing rings from a metallic material are provide, wherein the rings are provided with an axially continuous inner profile at an inner circumference, and with a radial outer profile at an outer circumference. The method can include: providing a tube having a tube section from which rings are to be produced; forming an inner profile of the tube section by swaging, wherein a first profile mandrel is arranged in the tube, an outer profile of the mandrel corresponds to the inner profile of the rings to be formed, and the tube section is processed from outside by a swaging tool; and forming a radial outer profile to by rolling.

Description

Die vorliegende Erfindung betrifft ein Verfahren sowie eine Anordnung zum Herstellen von Ringen aus einem Rohr aus einem metallischen Werkstoff, wobei die Ringe am Innenumfang mit einem axial durchgehenden Innenprofil und am Außenumfang mit einem radialen Außenprofil versehen sind. The present invention relates to a method and an arrangement for producing rings from a tube made of a metallic material, wherein the rings are provided on the inner circumference with an axially continuous inner profile and on the outer circumference with a radial outer profile.

Ein derartiges Verfahren ist beispielsweise bekannt aus der DE 102 19 441 Cl . Das in dieser Druckschrift beschriebene Verfahren dient zur Herstellung von innen- und/oder außen profilierten Ringen, insbesondere von Wälzlagerringen und Getrieberingen, in komplett schleiffertigem Zustand aus Rohr- oder Vollmaterial. Ein radiales Außenprofil soll sich erzeugen lassen durch Radial-Axial-Profilrohrwalzen. Dabei wird ein Rohrabschnitt von außen mit einem Walzwerkzeug bearbeitet. Der dabei entstehende Werkstofffluss wird durch ein Gegendruckwerkzeug beeinflusst, das in axialer Richtung an dem bearbeiteten Rohrabschnitt angreift. Hierdurch ist der Werkstofffluss in axialer und radialer Richtung steuerbar, so dass der ausweichende Werkstoff in die Ausbildung des Profils einbezogen werden kann.Such a method is known, for example from the DE 102 19 441 Cl , The method described in this document is used for the production of internally and / or externally profiled rings, in particular of rolling bearing rings and gear rings, in a complete ready-to-sand state of tube or solid material. A radial outer profile should be produced by radial-axial profile tube rollers. In this case, a pipe section is machined from the outside with a rolling tool. The resulting flow of material is influenced by a counter-pressure tool which acts in the axial direction on the machined pipe section. As a result, the flow of material in the axial and radial directions is controllable, so that the evasive material can be included in the formation of the profile.

Zur Herstellung beispielsweise von Synchronringen kann dabei gleichzeitig ein radiales Innenprofil gebildet werden. Bei der Herstellung von Schaltmuffen wird vorgeschlagen, die notwendige Innenverzahnung (axiale Profilierung) spanend in einem separaten Arbeitsgang herzustellen, nachdem die Außenkontor komplett schleiffertig gewalzt worden ist.For example, for producing synchronizer rings, a radial inner profile can be formed at the same time. In the production of sliding sleeves is proposed to produce the necessary internal toothing (axial profiling) by cutting in a separate operation, after the Außenkontor has been completely rolled ready for grinding.

Vor dem obigen Hintergrund ist es die Aufgabe der Erfindung, ein verbessertes Verfahren zum Herstellen von Ringen aus einem metallischen Werkstoff, ausgehend von Rohrmaterial, anzugeben, wobei insbesondere die axiale Profilierung einfacher herstellbar sein soll.Against the above background, it is the object of the invention to provide an improved method for producing rings of a metallic material, starting from pipe material, wherein in particular the axial profiling should be easier to produce.

Diese Aufgabe wird zum einen gelöst durch ein Verfahren zum Herstellen von Ringen aus einem metallischen Werkstoff, die am Innenumfang mit einem axial durchgehenden Innenprofil und am Außenumfang mit einem radialen Außenprofil versehen sind, mit den Schritten:

  1. a) Bereitstellen eines Rohres, das einen Rohrabschnitt aufweist, aus dem die Ringe herzustellen sind;
  2. b) Ausbilden des Innenprofils des Rohrabschnittes durch Kneten, wobei in dem Rohr ein erster Profildorn angeordnet ist, dessen Dornaußenprofil dem zu bildenden Innenprofil der Ringe entspricht, und wobei der Rohrabschnitt von außen mit einem Knetwerkzeug bearbeitet wird; und
  3. c) Ausbilden des radialen Außenprofils, und zwar durch Walzen.
This object is achieved on the one hand by a method for producing rings of a metallic material, which are provided on the inner circumference with an axially continuous inner profile and on the outer circumference with a radial outer profile, with the following steps:
  1. a) providing a pipe having a pipe section from which the rings are to be made;
  2. b) forming the inner profile of the pipe section by kneading, wherein in the tube, a first profile mandrel is arranged, the outer profile of the mandrel corresponding to the forming inner profile of the rings, and wherein the pipe section is machined from the outside with a kneading tool; and
  3. c) forming the radial outer profile, by rolling.

In gleicher Weise wird die obige Aufgabe gelöst durch eine Anordnung zum Herstellen von Ringen aus einem metallischen Werkzeug, insbesondere zur Durchführung des oben genannten Verfahrens, mit

  • einer Knetvorrichtung zum Ausbilden des Innenprofils, wobei die Knetvorrichtung einen ersten Profildorn aufweist, der in dem Rohr angeordnet ist und dessen Dornaußenprofil dem zu bildenden Innenprofil der Ringe entspricht, und wobei die Knetvorrichtung ein Knetwerkzeug aufweist, das den Rohrabschnitt von außen bearbeitet, um einen innen profilierten Rohrabschnitt zu bilden; und
  • einer nachgeordneten Walzvorrichtung zum Bilden des Außenprofils.
In the same way, the above object is achieved by an arrangement for producing rings from a metallic tool, in particular for carrying out the above-mentioned method, with
  • a kneading device for forming the inner profile, wherein the kneading device comprises a first profile mandrel which is arranged in the tube and the mandrel outer profile corresponds to the inner profile of the rings to be formed, and wherein the kneading device comprises a kneading tool, which processes the pipe section from the outside to an inside profiled pipe section to form; and
  • a downstream rolling device for forming the outer profile.

Bei dem erfindungsgemäßen Verfahren und der erfindungsgemäßen Herstellungsanordnung kann das axiale Innenprofil der Ringe deutlich kostengünstiger hergestellt werden, nämlich durch Kneten. Da der zum Herstellen der Ringe verwendete metallische Werkstoff wegen des verwendeten Walzverfahrens zum Herstellen des radialen Außenprofils ohnehin in Grenzen fließfähig sein muss, ist das Knetverfahren zur Herstellung des axialen Innenprofils generell anwendbar.In the method according to the invention and the manufacturing arrangement according to the invention, the axial inner profile of the rings can be produced significantly cheaper, namely by kneading. Since the metallic material used to produce the rings must be able to flow within limits anyway because of the rolling process used for producing the radial outer profile, the kneading method for producing the axial inner profile is generally applicable.

Der Begriff des Knetens ist vorliegend breit zu verstehen und soll sämtliche ähnliche und alternative Verfahren beinhalten, bei denen Werkstoff durch radialen und/oder axialen Druck intermittierend in das Profil des Profildorn gedrückt wird. Schließlich hat sich gezeigt, dass das so hergestellte axiale Innenprofil bei dem darauffolgenden Walzschritt zur Herstellung des radialen Außenprofils überraschenderweise nicht oder nur sehr gering beeinflusst wird, so dass im günstigsten Fall eine Nachbearbeitung des axialen Innenprofils nach dem Walzschritt nicht erforderlich ist.The term kneading is to be understood broadly herein and is intended to include all similar and alternative methods in which material is intermittently pressed into the profile of the profile mandrel by radial and / or axial pressure. Finally, it has been found that the axial inner profile produced in this way is surprisingly not or only very slightly influenced in the subsequent rolling step for producing the radial outer profile, so that in the best case a reworking of the axial inner profile after the rolling step is not required.

Die erfindungsgemäßen Ringe können insbesondere Schaltmuffen oder Kupplungskörper sein, wie sie in Getrieben verwendet werden.The rings according to the invention may in particular be sliding sleeves or coupling bodies, as used in transmissions.

Die Aufgabe wird somit vollkommen gelöst.The task is thus completely solved.

Bei dem erfindungsgemäßen Herstellungsverfahren ist es bei einer alternativen Ausführungsform bevorzugt, wenn die einzelnen Ringe vor dem Walzschritt c) von dem innen profilierten Rohrabschnitt abgetrennt werden.In the case of the production method according to the invention, it is preferred in an alternative embodiment if the individual rings are separated from the internally profiled pipe section before the rolling step c).

Bei dieser Ausführungsform ist es vorteilhaft, dass in dem Walzschritt der Werkstofffluss ggf. von beiden axialen Seiten aus nahe dem Walzwerkzeug steuerbar ist.In this embodiment, it is advantageous that, in the rolling step, the material flow may optionally be controllable from both axial sides close to the rolling tool.

Bei einer alternativen Ausführungsform erfolgt der Walzschritt c) vorzugsweise an dem innen profilierten Rohrabschnitt, wobei fertiggestellte Ringe anschließend abgetrennt werden.In an alternative embodiment, the rolling step c) is preferably carried out on the inside profiled pipe section, wherein finished rings are subsequently separated.

Hierbei ist die Handhabung vorteilhaft, da eine große Anzahl von Einzelteilen erst dann entsteht, wenn die Ringe fertiggestellt sind.Here, the handling is advantageous because a large number of items only arises when the rings are completed.

Ferner ist es vorteilhaft, wenn das Rohr in dem Knetschritt b) relativ zu dem Knetwerkzeug in axialer Richtung bewegt wird.Further, it is advantageous if the tube is moved in the kneading step b) relative to the kneading tool in the axial direction.

Bei dieser Ausführungsform kann das axiale Innenprofil in einem kontinuierlichen Arbeitsschritt an dem Rohrabschnitt ausgebildet werden. Alternativ ist es natürlich auch denkbar, dass das Knetwerkzeug sich relativ zu dem Rohr bewegt.In this embodiment, the axial inner profile can be formed in a continuous operation on the pipe section. Alternatively, it is of course also conceivable that the kneading tool moves relative to the tube.

Ferner ist es von Vorteil, wenn das Dornaußenprofil des ersten Profildorns kürzer ist als die Länge des Rohrabschnittes, wobei der erste Profildorn schwimmend gelagert ist und wobei der Rohrabschnitt im Knetschritt b) in axialer Richtung relativ zu dem ersten Profildorn bewegt wird.Further, it is advantageous if the mandrel outer profile of the first profile mandrel is shorter than the length of the pipe section, wherein the first profile mandrel is floating and wherein the pipe section is moved in the kneading step b) in the axial direction relative to the first profile mandrel.

Mit dieser Ausführungsform wird erreicht, dass die Länge des Rohrabschnittes, an dem das axiale Innenprofil in einem Stück ausgebildet wird, vergleichsweise lang ausgebildet sein kann, beispielsweise 50 bis 70 cm. Es ist jedoch auch denkbar, den Rohrabschnitt noch länger auszubilden, beispielsweise 2 m oder mehr (theoretisch unendlich).With this embodiment it is achieved that the length of the tube section, on which the axial inner profile is formed in one piece, can be made comparatively long, for example 50 to 70 cm. However, it is also conceivable to make the pipe section even longer, for example 2 m or more (theoretically infinite).

Gegenüber anderen Verfahren kann damit der verwertbare Anteil eines Ausgangsrohres deutlich vergrößert werden, da die Länge des profilierten Rohrabschnittes im Verhältnis zu der Länge der in der Regel notwendigen Einspannung des Rohres größer wird.In comparison with other methods, the utilizable portion of an outlet tube can thus be significantly increased since the length of the profiled tube section becomes greater in relation to the length of the clamping of the tube, which is usually necessary.

Ferner ist es vorteilhaft, wenn der erste Profildorn im Knetschritt b) in axialer Richtung abgestützt wird und somit in Bezug auf das Knetwerkzeug im Wesentlichen stationär bleibt.Furthermore, it is advantageous if the first profile mandrel is supported in the kneading step b) in the axial direction and thus remains substantially stationary with respect to the kneading tool.

Zwar ist der Profildorn hierbei schwimmend gelagert. Um jedoch Verklemmungen zu vermeiden, kann in axialer Richtung eine Abstützung erfolgen, vorzugsweise in Bewegungsrichtung des Rohrabschnittes relativ zu dem ersten Profildorn.Although the profile mandrel is floating here. However, in order to avoid jamming, a support can take place in the axial direction, preferably in the direction of movement of the pipe section relative to the first profile mandrel.

Von besonderem Vorteil ist es, wenn in dem Walzschritt c) ein zweiter Profildorn in dem Rohrabschnitt bzw. Ring angeordnet ist.It is particularly advantageous if in the rolling step c) a second profile mandrel is arranged in the pipe section or ring.

Durch das Anordnen des zweiten Profildorns, dessen Außenprofil dem bereits gefertigten axialen Innenprofil des Rohrabschnittes bzw. Rings entspricht, kann der Walzschritt durchgeführt werden, ohne dass ein Werkstofffluss die Integrität des bereits gefertigten Innenprofils beeinträchtigt.By arranging the second profile mandrel whose outer profile corresponds to the already produced axial inner profile of the pipe section or ring, the rolling step can be carried out without a material flow affecting the integrity of the already produced inner profile.

Es versteht sich dabei, dass es ggf. nach dem Walzschritt noch notwendig sein kann, eine Nachbearbeitung des axialen Innenprofils durchzuführen. Bei einer bevorzugten Ausführungsform ist hingegen überhaupt keine Nachbearbeitung notwendig, jedenfalls keine spanende Nachbearbeitung.It goes without saying that it may still be necessary after the rolling step to carry out a reworking of the axial inner profile. In a preferred embodiment, however, no post-processing is necessary, at least no post-machining.

In einer weiteren Ausführungsform des erfindungsgemäßen Herstellungsverfahrens ist es vorteilhaft, wenn in dem Walzschritt c) eine axiale Gegenkraft auf den Rohrabschnitt bzw. den Ring erzeugt wird, und zwar entgegen der durch die Walzwerkzeuge erzeugten Fließrichtung des Werkstoffes, um so den Werkstofffluss in axialer und/oder radialer Richtung steuern zu können.In a further embodiment of the production method according to the invention, it is advantageous if in the rolling step c) an axial counterforce is generated on the pipe section or the ring, against the flow direction of the material produced by the rolling tools, so as to increase the material flow in the axial and / or or radial direction to control.

Bei dieser Ausführungsform kann erreicht werden, dass während des Walzens des radialen Außenprofils radiale Erhebungen entstehen, die über den Außendurchmesser des ungewalzten Rohres hinausgehen. Mit anderen Worten kann ggf. ein Werkstofffluss radial nach außen erzeugt werden, um so bei möglichst geringer Beeinflussung des bereits gefertigten axialen Innenprofils ein radiales Außenprofil mit vergleichsweise großen Differenzen zwischen maximalem und minimalem Außendurchmesser zu bilden.In this embodiment, it can be achieved that, during the rolling of the radial outer profile, radial elevations arise which are beyond the outer diameter of the unrolled tube go out. In other words, if necessary, a material flow can be generated radially outward, so as to form a radial outer profile with comparatively large differences between the maximum and minimum outer diameter with as little influence as possible on the already produced axial inner profile.

Obgleich das weiter oben erwähnte Herstellungsverfahren, bei dem der erste Profildorn kürzer ist als der axial zu profilierende Rohrabschnitt, bevorzugt ist, ist es gemäß einer weiteren alternativen Ausführungsform auch möglich, dass das Dornaußenprofil des ersten Profildorns etwa so lang bzw. wenigstens so lang ist wie der Rohrabschnitt, wobei der erste Profildorn im Knetschritt b) in axialer Richtung gemeinsam mit dem Rohr bewegt wird bzw. sich relativ zu dem Knetwerkzeug bewegt.Although the above-mentioned manufacturing method in which the first profile mandrel is shorter than the axially profiled pipe section is preferred, it is also possible according to a further alternative embodiment that the mandrel outer profile of the first profile mandrel is about as long or at least as long as the pipe section, wherein the first profile mandrel in the kneading step b) is moved in the axial direction together with the tube or moves relative to the kneading tool.

Bei dieser Ausführungsform wird das axiale Innenprofil durch Knetwerkzeuge von außen gefertigt, indem ein Werkstofffluss in das radiale Außenprofil des Profildorns hinein erzeugt wird. Dabei ist bei dieser Ausführungsform jedoch keine Relativgeschwindigkeit zwischen dem Profildorn und dem Rohrabschnitt vorhanden, so dass die Fertigungsgenauigkeit sehr hoch sein kann.In this embodiment, the axial inner profile is made by external kneading tools by a material flow is generated in the radial outer profile of the profile mandrel inside. However, in this embodiment, no relative speed between the profile mandrel and the pipe section is present, so that the manufacturing accuracy can be very high.

Bei dem alternativen Verfahren, bei dem der Profildorn schwimmend gelagert ist, ist es hingegen theoretisch denkbar, dass sich die Form des radialen Innenprofils nach dem Kneten an dem Profildorn noch leicht verändert, insbesondere, wenn die Vorschubgeschwindigkeit nicht optimal eingestellt ist.In the alternative method, in which the profile mandrel is mounted floating, it is theoretically conceivable that the shape of the radial inner profile after kneading on the profile mandrel still slightly changed, especially if the feed rate is not optimally adjusted.

Bei der erfindungsgemäßen Herstellungsanordnung ist es gemäß der ersten Alternative bevorzugt, wenn das Dornaußenprofil des ersten Profildorns kürzer ist als die Länge des Rohrabschnittes, wobei der erste Profildorn in Bezug auf das Rohr schwimmend gelagert ist.In the manufacturing arrangement according to the invention it is preferred according to the first alternative, when the mandrel outer profile of the first profile mandrel is shorter than the length of the pipe section, wherein the first profile mandrel is floatingly mounted with respect to the tube.

In der Walzvorrichtung ist vorzugsweise ein Gegendruckwerkzeug vorgesehen, das einen Anlageabschnitt aufweist, mittels dessen eine axiale Gegenkraft auf den Rohrabschnitt bzw. den Ring entgegen der durch die Walzwerkzeuge hervorgerufenen Fließrichtung des Werkstoffes erzeugt werden kann, um so den Werkstofffluss in axialer und/oder in radialer Richtung zu steuern.In the rolling device, a counterpressure tool is preferably provided, which has a contact section, by means of which an axial counterforce on the pipe section or the ring against the flow direction caused by the rolling tools of the material can be generated, so as to the flow of material in the axial and / or radial To control direction.

Das Gegendruckwerkzeug ist vorzugsweise einstückig mit dem zweiten Profildorn ausgebildet.The counter-pressure tool is preferably formed integrally with the second profile mandrel.

Bei der erfindungsgemäßen Herstellungsanordnung ist ferner vorzugsweise eine Abtrennvorrichtung zum Abtrennen von einzelnen Ringen von dem Rohrabschnitt vorgesehen.In the manufacturing arrangement according to the invention, a separating device is furthermore preferably provided for separating individual rings from the pipe section.

Hierbei kann es sich um eine separate Vorrichtung handeln, beispielsweise ein Drehwerkzeug oder Fräswerkzeug, Schleifwerkzeug, Säge, etc. zum radialen Abstechen der einzelnen Rohre.This may be a separate device, for example, a turning tool or milling tool, grinding tool, saw, etc. for radial parting of the individual tubes.

Die Abtrennvorrichtung kann dabei vor der Walzvorrichtung angeordnet sein, um der Walzvorrichtung auf diese Weise einzelne, lediglich am Innenumfang profilierte Ringe zuzuführen.The separating device can be arranged in front of the rolling device in order to supply the rolling device in this way individual, profiled only on the inner circumference rings.

Die Abtrennvorrichtung kann jedoch alternativ auch an oder nach der Walzvorrichtung angeordnet sein, um jeweils einen Ring von dem Rohrabschnitt abzutrennen, der sowohl am Innenumfang als auch am Außenumfang fertig profiliert ist.Alternatively, however, the separating device may also be arranged on or after the rolling device in order to separate one ring from the pipe section, which is finished profiled both on the inner circumference and on the outer circumference.

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

Ausführungsbeispiele der Erfindung sind in der Zeichnung dargestellt und werden in der nachfolgenden Beschreibung näher erläutert. Es zeigen:

Figur 1
ein zylindrisches Rohr aus metallischem Werkstoff, das als Ausgangswerkstück für das erfindungsgemäße Herstellungsverfahren geeignet ist;
Figur 2
eine schematische Längsschnittansicht durch eine Knetvorrichtung einer erfindungsgemäßen Herstellungs- anordnung;
Figur 3
eine perspektivische Ansicht eines in der Knetvor- richtung der Figur 2 gefertigten Rohrabschnittes mit axialem Innenprofil;
Figur 4
eine schematische Längsschnittansicht durch eine Walzvorrichtung einer erfindungsgemäßen Herstellungs- anordnung;
Figur 5
eine schematische Längsschnittansicht durch eine alternative Form einer Walzvorrichtung einer erfin- dungsgemäßen Herstellungsanordnung;
Figur 6
eine schematische Längsschnittansicht durch eine alternative Ausführungsform einer Knetvorrichtung für eine erfindungsgemäße Herstellungsanordnung;
Figur 7
eine Draufsicht auf einen erfindungsgemäß hergestell- ten Kupplungskörper; und
Figur 8
eine Schnittansicht entlang der Linie VIII-VIII der Figur 7.
Embodiments of the invention are illustrated in the drawings and are explained in more detail in the following description. Show it:
FIG. 1
a cylindrical tube of metallic material which is suitable as the starting workpiece for the manufacturing method according to the invention;
FIG. 2
a schematic longitudinal sectional view through a kneading device of a manufacturing arrangement according to the invention;
FIG. 3
a perspective view of one in the kneading of the FIG. 2 manufactured pipe section with axial inner profile;
FIG. 4
a schematic longitudinal sectional view through a rolling device of a manufacturing arrangement according to the invention;
FIG. 5
a schematic longitudinal sectional view through an alternative form of a rolling device of a manufacturing arrangement according to the invention;
FIG. 6
a schematic longitudinal sectional view through an alternative embodiment of a kneading apparatus for a manufacturing arrangement according to the invention;
FIG. 7
a plan view of an inventively produced coupling body; and
FIG. 8
a sectional view taken along the line VIII-VIII of FIG. 7 ,

In Figur 1 ist ein zylindrisches Rohr als Ausgangswerkstück für das erfindungsgemäße Herstellungsverfahren generell mit 10 bezeichnet. Das Ausgangsrohr 10 ist sowohl am Innenumfang als auch am Außenumfang unprofiliert und ist aus einem metallischen Werkstoff hergestellt, der dazu geeignet ist, in einer Knetvorrichtung und einer Walzvorrichtung bearbeitet zu werden. Der metallische Werkstoff ist jedenfalls begrenzt fließfähig, wobei es sich versteht, dass der Werkstoff bei der Bearbeitung ggf. erwärmt werden kann.In FIG. 1 is a cylindrical tube as the starting workpiece for the manufacturing method according to the invention generally designated 10. The output tube 10 is unprofiled on both the inner periphery and the outer periphery, and is made of a metallic material capable of being processed in a kneader and a rolling device. The metallic material is in any case limited flowable, it being understood that the material may be heated during processing.

Das Rohr 10 soll in dem erfindungsgemäßen Herstellungsverfahren in eine Mehrzahl von Ringen umgeformt werden, die an ihrem Innenumfang ein axiales Innenprofil und an ihrem Außenumfang ein radiales Außenprofil aufweisen, insbesondere Schaltmuffen für Getriebe.The tube 10 is to be formed in the manufacturing process according to the invention in a plurality of rings, which have on its inner circumference an axial inner profile and on its outer periphery a radial outer profile, in particular shift sleeves for transmission.

Figur 2 zeigt eine schematische Längsschnittansicht durch eine Knetvorrichtung 12 einer erfindungsgemäßen Herstellungsanordnung. FIG. 2 shows a schematic longitudinal sectional view through a kneading device 12 of a manufacturing arrangement according to the invention.

Die Knetvorrichtung 12 weist in an sich bekannter Weise ein Knetwerkzeug 14 mit Knetbacken 16 auf, die radial von außen auf das Rohr 10 einwirken.The kneading device 12 has, in a manner known per se, a kneading tool 14 with kneading jaws 16, which act on the tube 10 radially from the outside.

Die Knetvorrichtung 12 wird dazu verwendet, an dem Ausgangsrohr 10 eine axiale Innenprofilierung vorzusehen, beispielsweise in Form einer Verzahnung.The kneading device 12 is used to provide on the output tube 10 an axial internal profiling, for example in the form of a toothing.

Zu diesem Zweck ist in der Knetvorrichtung 12 ein erster Profildorn 20 gelagert.For this purpose, a first profile mandrel 20 is mounted in the kneading device 12.

Der Profildorn 20 weist einen in axialer Richtung vergleichsweise kurzen Abschnitt mit einem Dornaußenprofil 22 auf. Das Dornaußenprofil 22 entspricht in seiner Form dem Innenprofil, das an dem Rohr 10 vorzusehen ist.The profile mandrel 20 has a comparatively short section in the axial direction with a mandrel outer profile 22. The outer mandrel profile 22 corresponds in shape to the inner profile to be provided on the tube 10.

Ferner weist der erste Profildorn 20 einen Konusabschnitt 24 auf, der in axialer Vorschubrichtung 26 vor dem Dornaußenprofil angeordnet ist.Furthermore, the first profile mandrel 20 has a cone section 24, which is arranged in the axial feed direction 26 in front of the mandrel outer profile.

Bei dem Knetvorgang erfolgt eine gewisse Durchmesserreduzierung des Ausgangsrohrs 10 und der Konusabschnitt 24 ist an seinem axialen vorderen Ende an den Innenumfang des Ausgangsrohrs 10 angepasst, wohingegen der Konusabschnitt an seinem hinteren Ende an den - verringerten - Durchmesser des Dornaußenprofils 22 angepasst ist.In the kneading process, a certain diameter reduction of the output tube 10 and the cone portion 24 is adapted at its axial front end to the inner circumference of the output tube 10, whereas the cone portion is adapted at its rear end to the - reduced - diameter of the mandrel outer profile 22.

Der erste Profildorn 20 ist innerhalb des Rohrs 10 schwimmend gelagert, verbleibt also in Bezug auf das Knetwerkzeug 14 im wesentlichen stationär. In axialer Richtung 26 wird in Bezug auf die Knetvorrichtung 12 das Rohr 10 zugeführt. Dabei erfolgt innerhalb des Knetwerkzeuges 14 die Profilierung des Innenumfanges des Rohrs 10. Der erste Profildorn 20 kann dabei in axialer Richtung von einer optionalen Abstützeinrichtung 27 abgestützt werden, insbesondere, um Verklemmungen oder Ähnliches zu vermeiden.The first profile mandrel 20 is floating within the tube 10, so remains substantially stationary with respect to the kneading tool 14. In the axial direction 26, the tube 10 is supplied with respect to the kneading device 12. This takes place within the kneading tool 14, the profiling of the inner circumference of the tube 10. The first profile mandrel 20 can be supported in the axial direction of an optional support means 27, in particular to avoid jamming or the like.

In der Knetvorrichtung 12 wird ein Rohrabschnitt 28 des Rohrs 10 mit dem axialen Innenprofil versehen, wobei der Rohrabschnitt 28 eine deutlich größere Länge hat als das Dornaußenprofil 22 des ersten Dornaußenprofils. Beispielsweise kann der Rohrabschnitt 28 eine Länge von 50 oder 60 cm haben, ggf. sogar eine Länge von 2 m oder mehr (theoretisch unendlich).In the kneading device 12, a pipe section 28 of the tube 10 is provided with the axial inner profile, wherein the pipe section 28 has a significantly greater length than the mandrel outer profile 22 of the first mandrel outer profile. For example, the pipe section 28 may have a length of 50 or 60 cm, possibly even a length of 2 m or more (theoretically infinite).

Von dem Ausgangsrohr kann somit ein überwiegender Teil (der Rohrabschnitt 28) profiliert werden. Lediglich an einem oder beiden Enden des Rohrs 10 ist gewöhnlich aufgrund einer Einspannstelle keine oder eine nicht brauchbare Profilierung vorgesehen.From the output tube can thus be profiled a predominant part (the pipe section 28). Only at one or both ends of the tube 10 is usually due to a clamping no or an unusable profiling provided.

Figur 3 zeigt einen in der Knetvorrichtung 12 hergestellten Rohrabschnitt 30, der mit einem axialen Innenprofil 32 ausgebildet ist. FIG. 3 shows a tube section 30 produced in the kneading device 12, which is formed with an axial inner profile 32.

Der innen profilierte Rohrabschnitt 30 kann nun zur Herstellung eines radialen Außenprofils einer Walzvorrichtung zugeführt werden. Alternativ ist es auch möglich, von dem innen profilierten Rohrabschnitt 30 einzelne, innen profilierte Ringe 36 abzutrennen, beispielsweise mittels einer schematisch in Figur 3 gezeigten Abtrennvorrichtung 34. Das Abtrennen kann beispielsweise durch Abstechdrehen oder Ähnliches erfolgen.The internally profiled tube section 30 can now be supplied to produce a radial outer profile of a rolling device. Alternatively, it is also possible to separate from the internally profiled pipe section 30 individual, internally profiled rings 36, for example by means of a schematically in FIG. 3 The severing device 34 shown. The separation can be done for example by parting off or the like.

Figur 4 zeigt eine schematische Längsschnittansicht durch eine Walzvorrichtung 40 einer erfindungsgemäßen Herstellungsanordnung. FIG. 4 shows a schematic longitudinal sectional view through a rolling device 40 of a manufacturing arrangement according to the invention.

Die Walzvorrichtung 40 ist der Knetvorrichtung 12 nachgeordnet. In der Walzvorrichtung 40 wird ein innen profilierter Rohrabschnitt 30 als Ausgangswerkstück herangezogen. An dem innen profilierten Rohr 30 wird ein radiales Außenprofil eines herzustellenden Rings gewalzt, wobei anschließend der so fertiggestellte Ring von dem innen profilierten Rohr 30 abgetrennt wird, beispielsweise mittels einer Abtrennvorrichtung 34a, die in Figur 4 ebenfalls schematisch angedeutet ist.The rolling device 40 is downstream of the kneading device 12. In the rolling device 40, an internally profiled pipe section 30 is used as the starting workpiece. On the internally profiled tube 30, a radial outer profile of a ring to be produced is rolled, wherein subsequently the thus completed ring is separated from the internally profiled tube 30, for example by means of a separating device 34a, the in FIG. 4 also indicated schematically.

Anschließend kann ein weiterer Abschnitt des innen profilierten Rohrabschnittes 30 gewalzt werden, um einen weiteren Ring herzustellen, der dann wiederum abgetrennt wird.Subsequently, a further portion of the internally profiled pipe section 30 can be rolled to produce a further ring, which is then separated again.

Die Walzvorrichtung 40 kann dem Grunde nach aufgebaut und betrieben werden, wie es in dem Dokument DE 102 19 441 Cl beschrieben ist.The rolling apparatus 40 may basically be constructed and operated as described in the document DE 102 19 441 Cl is described.

Die Walzvorrichtung 40 weist wenigstens zwei Walzrollen 42 auf, die um Achsen herum in einer Walzbewegung 44 drehbar sind, wobei die Achsen parallel zu der Längsachse des eingespannten Rohrabschnittes 30 verlaufen.The rolling apparatus 40 has at least two rolling rollers 42, which are rotatable about axes in a rolling motion 44, wherein the axes are parallel to the longitudinal axis of the clamped pipe section 30.

Ferner üben die Walzrollen 42 jeweils einen radialen Druck auf den Rohrabschnitt 30 aus, wie es schematisch bei 44 angedeutet ist.Further, the rolling rollers 42 each exert a radial pressure on the pipe section 30, as indicated schematically at 44.

Der Rohrabschnitt 30 ist an einem Ende mittels eines Spannfutters 46 eingespannt und wird über das Spannfutter 46 um seine Längsachse gedreht, wie es schematisch bei 48 gezeigt ist.The tube section 30 is clamped at one end by means of a chuck 46 and is rotated about the chuck 46 about its longitudinal axis, as shown schematically at 48.

Gegenüber dem Dokument DE 102 19 441 C1 ist jedoch unterschiedlich, dass der Rohrabschnitt 30 ein axiales Innenprofil 32 aufweist, das während des Walzvorgangs möglichst wenig, idealerweise gar nicht, beeinträchtigt wird.Opposite the document DE 102 19 441 C1 However, it is different that the pipe section 30 has an axial inner profile 32, which during the rolling process as little, ideally not at all, is impaired.

Zu diesem Zweck ist in der Walzvorrichtung 40 ein zweiter Profildorn 50 vorgesehen. Der zweite Profildorn 50 weist einen ersten Abschnitt mit einem Außenprofil 52 auf, das dem axialen Innenprofil des Rohrabschnittes 30 entspricht.For this purpose, a second profile mandrel 50 is provided in the rolling device 40. The second profile mandrel 50 has a first section with an outer profile 52, which corresponds to the axial inner profile of the pipe section 30.

Ferner weist der zweite Profildorn 50 einen Anlageabschnitt 54 auf, dessen Durchmesser größer ist als jener des Außenprofils 52. Der Anlageabschnitt 54 liegt in axialer Richtung an dem freien Ende des Rohrabschnittes 30 an. Der Profildorn 50 ist ferner in axialer Richtung beweglich, wie es bei 56 schematisch angedeutet ist. Daher ist der zweite Profildorn 50 gleichzeitig als Gegendruckwerkzeug ausgebildet und dazu ausgelegt, auf den gewalzten Abschnitt eine axiale Kraft auszuüben, die dazu geeignet ist, den Werkstofffluss zu steuern, und zwar in axialer Richtung, wie es bei 58 gezeigt ist, und in radialer Richtung, wie es bei 59 gezeigt ist.Further, the second profile mandrel 50 has a contact portion 54 whose diameter is greater than that of the outer profile 52. The contact portion 54 is in the axial direction at the free end of the pipe section 30 at. The profile mandrel 50 is also movable in the axial direction, as indicated schematically at 56. Therefore, the second profile mandrel 50 is simultaneously formed as a counter pressure tool and adapted to exert on the rolled portion an axial force which is adapted to control the material flow, in the axial direction, as shown at 58, and in the radial direction as shown at 59.

In der Walzvorrichtung 40 wird folglich durch die walzende Bearbeitung eines Abschnittes des innen profilierten Rohrabschnittes 30 ein radiales Außenprofil 62 erzeugt, und zwar das radiale Außenprofil für jeweils einen Ring (oder alternativ gleichzeitig für eine Mehrzahl von Ringen). Nach der walzenden Bearbeitung wird der so fertiggestellte Ring 60 abgetrennt, und zwar mittels der schematisch gezeigten Abtrennvorrichtung 34a.In the rolling device 40, a radial outer profile 62 is consequently produced by the rolling machining of a section of the internally profiled tube section 30, namely the radial outer profile for each ring (or alternatively simultaneously for a plurality of rings). After the rolling processing, the thus completed ring 60 is cut off, by means of the separating device 34a shown schematically.

Durch die Ausübung eines axialen Druckes auf den Rohrabschnitt 30 während der Walzbearbeitung kann der Werkstofffluss in axialer und/oder radialer Richtung gesteuert werden, wobei im Endergebnis ein radiales Außenprofil 62 erzeugt werden kann, dessen Außenumfang abschnittsweise größer sein kann als der Außenumfang des lediglich innen profilierten Rohrabschnittes 30.By exerting an axial pressure on the pipe section 30 during the rolling process, the material flow can be controlled in the axial and / or radial direction, in the end result, a radial outer profile 62 can be generated, the outer circumference may be partially larger than the outer circumference of the only profiled inside Pipe section 30.

Im dargestellten Ausführungsbeispiel kann der am Innenumfang axial und am Außenumfang radial profilierte Ring 60 beispielsweise als Schaltmuffe für ein Kraftfahrzeuggetriebe verwendet werden.In the illustrated embodiment, the axially on the inner circumference and radially profiled on the outer circumference ring 60 may be used for example as a shift sleeve for a motor vehicle transmission.

Figur 5 zeigt eine alternative Ausführungsform einer Walzvorrichtung 40'. FIG. 5 shows an alternative embodiment of a rolling device 40 '.

Die Walzvorrichtung 40' entspricht hinsichtlich Aufbau und Funktionsweise der Walzvorrichtung 40 der Figur 4. Es ist hierbei lediglich so, dass die Walzvorrichtung 40' dazu ausgelegt ist, innen profilierte Ringe 36 zu walzen, die vorab von einem innen profilierten Rohrabschnitt 30 abgetrennt worden sind (vgl. Figur 3).The rolling device 40 'corresponds to the structure and operation of the rolling device 40 of the FIG. 4 , In this case, it is merely the case that the rolling device 40 'is designed to roll internally profiled rings 36 which have been separated in advance from an internally profiled tube section 30 (cf. FIG. 3 ).

Auf der dem Anlageabschnitt 54' gegenüberliegenden Seite des Rings kann ein weiteres Gegendruckwerkzeug 66 vorgesehen sein, das axial bewegbar ist, wie bei 68 gezeigt. Hierdurch kann der Ring von beiden Seiten beeinflusst werden, um den Werkstofffluss zu steuern.On the side of the ring opposite the abutment portion 54 ', another counterpressure tool 66 may be provided which is axially movable, as shown at 68. This allows the ring to be influenced from both sides to control the material flow.

Figur 6 zeigt eine alternative Ausführungsform einer Knetvorrichtung 12' zur Herstellung eines innen profilierten Rohrabschnittes 30'. FIG. 6 shows an alternative embodiment of a kneader 12 'for producing an internally profiled pipe section 30'.

Die Knetvorrichtung 12' entspricht hinsichtlich Aufbau und Funktionsweise der Knetvorrichtung 12 der Figur 2. Im Folgenden wird lediglich auf Unterschiede eingegangen.The kneading device 12 'corresponds in terms of structure and operation of the kneading device 12 of FIG. 2 , In the following, only differences will be discussed.

Bei der Knetvorrichtung 12' weist der erste Profildorn 20' einen Abschnitt mit einem Dornaußenprofil 22' auf, der in seiner Länge dem zu bildenden Rohrabschnitt 30' entspricht.In the kneading apparatus 12 ', the first profile mandrel 20' has a section with a mandrel outer profile 22 ', which corresponds in its length to the pipe section 30' to be formed.

Der erste Profildorn 20' ist dabei in einer Spannvorrichtung 70 eingespannt, die gemeinsam mit dem Rohr 10 in axialer Richtung 26 dem Knetwerkzeug 14' zugeführt wird.The first profile mandrel 20 'is clamped in a clamping device 70, which is fed together with the tube 10 in the axial direction 26 of the kneading tool 14'.

Demzufolge wird in der Knetvorrichtung 12' ein Rohrabschnitt 30' mit axialem Innenprofil geknetet, dessen Länge etwa der Länge des Dornaußenprofils 22' des ersten Profildorns 20' entspricht.Accordingly, in the kneading device 12 ', a pipe section 30' is kneaded with an axial inner profile whose length corresponds approximately to the length of the mandrel outer profile 22 'of the first profile mandrel 20'.

Man erkennt, dass hierbei im Vergleich zu dem Verfahren mit schwimmendem ersten Profildorn 20 (Figur 2) ein gewisser Anteil des Ausgangsrohrs 10 (an den Enden) nicht verwertbar ist und abgetrennt werden muss, bevor der Rohrabschnitt 30 einer weiteren Bearbeitung zugeführt werden kann.It can be seen that in this case compared to the method with floating first profile mandrel 20 (FIG. FIG. 2 ) a certain portion of the output tube 10 (at the ends) is not usable and must be separated before the pipe section 30 can be fed to a further processing.

In den Figuren 7 und 8 ist ein gemäß dem erfindungsgemäßen Verfahren hergestellter Kupplungskörper 80 dargestellt.In the FIGS. 7 and 8 a coupling body 80 produced according to the method according to the invention is shown.

Der Kupplungskörper 80 ist erfindungsgemäß mit einem axialen Innenprofil 32'' und mit einem radialen Außenprofil 62" ausgebildet. Das axiale Innenprofil 32'' dient zum Aufschieben auf eine entsprechende Verzahnung beispielsweise eines Losrades eines Getriebes. Das radiale Außenprofil 62" ist so ausgebildet, dass sich der Kupplungskörper 80 gut an dem Losrad befestigen lässt, beispielsweise durch Schweißen. Das radiale Außenprofil 62'' umfasst daher einen radialen Flanschabschnitt.According to the invention, the coupling body 80 is formed with an axial inner profile 32 '' and with a radial outer profile 62 '' The axial inner profile 32 '' is used for sliding onto a corresponding toothing of, for example, a loose wheel of a transmission the coupling body 80 can be fixed well to the idler gear, for example by welding. The radial outer profile 62 '' therefore comprises a radial flange portion.

An dem Kupplungskörper 80 ist ferner ein Außenverzahnungsbereich 82 ausgebildet, an dem noch eine Außenverzahnung ausgebildet wird, in die die Innenverzahnung einer Schaltmuffe einschiebbar ist, um einen Formschluss zwischen dem Kupplungskörper (und damit dem mit dem Kupplungskörper 80 verbundenen Losrad) und einer Getriebewelle herzustellen, an der die Schaltmuffe axial verschiebbar, jedoch drehfest, gelagert ist.On the coupling body 80, an external toothing region 82 is further formed, on which an external toothing is still formed, into which the internal toothing of a sliding sleeve can be inserted in order to produce a positive connection between the coupling body (and thus the idler gear connected to the coupling body 80) and a transmission shaft. on which the shift sleeve axially displaceable, but rotationally fixed, is mounted.

Claims (16)

  1. Method for producing rings (60) from a metallic material, which are provided on the inner circumference with an axially continuous internal profile (32) and on the outer circumference with a radial external profile (62), comprising the steps:
    a) providing a tube (10), which has a tube section (28) from which the rings (60) are to be produced;
    b) forming the internal profile (32) of the tube section (28) by swaging, a first profile mandrel (20) being arranged in the tube (10), the mandrel external profile (22) corresponding to the internal profile (32) of the rings to be formed, and the tube section (28) being processed from outside with a swaging tool (14); and
    c) forming the radial external profile (62) of at least one ring (60), specifically by rolling.
  2. Production method according to Claim 1, the individual rings (36) being separated from an internally profiled tube section (30) before the rolling step c).
  3. Production method according to Claim 1, the rolling step c) being carried out on an internally profiled tube section (30) and the rings (60) finished in this way subsequently being separated.
  4. Production method according to one of Claims 1 to 3, the tube (10) being moved in the axial direction (26) relative to the swaging tool (14) in the swaging step b).
  5. Production method according to one of Claims 1 to 4, the mandrel external profile (22) of the first profile mandrel (20) being shorter than the length of the tube section (28), the first profile mandrel (20) being supported in a floating manner, and the tube section (28) being moved in the axial direction (26) relative to the first profile mandrel (20) in the swaging step b).
  6. Production method according to one of Claims 1 to 5, the first profile mandrel (20) being supported in the axial direction (27) in the swaging step b) and thus remaining substantially stationary in relation to the swaging tool (14).
  7. Production method according to one of Claims 1 to 6, a second profile mandrel (50) being arranged in the tube section (30) or ring (36) in the rolling step c).
  8. Production method according to one of Claims 1 to 7, an axial counter-force (56) counter to the direction of flow of the material being produced on the tube section (30) or the ring (36) in the rolling step c), in order to control the material flow (58, 59) in the axial and/or radial direction.
  9. Production method according to one of Claims 1 to 4, the mandrel external profile (22') of the first profile mandrel (20') being approximately as long as the tube section (28), and the first profile mandrel (20') together with the tube (10) being moved in the axial direction (26) in the swaging step b).
  10. Arrangement for producing rings (60) from a metallic material from a tube (10), the rings (60) being provided on the inner circumference with an axially continuous internal profile (32) and on the outer circumference with a radial external profile (62), in particular for implementing the method according to one of Claims 1 to 9, comprising:
    - a swaging device (12) for forming the internal profile (32), the swaging device (12) having a first profile mandrel (20), which is arranged in the tube (10) and the mandrel external profile (22) of which corresponds to the internal profile (32) of the rings (60) to be produced, and the swaging device (12) having a swaging tool (14), which processes the tube section (28) from outside in order to form an internally profiled tube section (30); and
    - a rolling device (40) arranged downstream for forming the external profile (62).
  11. Production arrangement according to Claim 10, the mandrel external profile (22) of the first profile mandrel (20) being shorter than the length of the tube section (28) and the first profile mandrel (20) being supported in a floating manner in relation to the tube (18).
  12. Production arrangement according to Claim 10 or 11, the rolling device (40) having a second profile mandrel (50), the mandrel external profile (52) of which corresponds to the internal profile (32) produced in the tube section (30) and which, during the formation of the external profile (62), is pushed into the internally profiled tube section (30) or ring (36).
  13. Production arrangement according to Claim 12, the second profile mandrel (50) being formed as an axially displaceable mating compression tool (50), which has a contact section (54) by means of which an axial counter-force (56) counter to the direction of flow of the material can be produced on the tube section (30) or the ring (36), in order to control the material flow (58, 59) in the axial and/or radial direction.
  14. Production arrangement according to one of Claims 10 to 13, comprising a separating device (34) for separating individual rings (36, 60) from the tube section.
  15. Production arrangement according to Claim 14, the separating device (34) being arranged before the rolling device (40).
  16. Production arrangement according to Claim 14, the separating device (34a) being arranged on or after the rolling device (40).
EP06762038A 2005-06-15 2006-06-14 Method and device for producing metal rings Expired - Fee Related EP1909990B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005028828A DE102005028828B3 (en) 2005-06-15 2005-06-15 Method and device for producing metal rings
PCT/EP2006/005695 WO2006133910A1 (en) 2005-06-15 2006-06-14 Method and device for producing metal rings

Publications (2)

Publication Number Publication Date
EP1909990A1 EP1909990A1 (en) 2008-04-16
EP1909990B1 true EP1909990B1 (en) 2009-01-21

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EP06762038A Expired - Fee Related EP1909990B1 (en) 2005-06-15 2006-06-14 Method and device for producing metal rings

Country Status (7)

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US (1) US20080250838A1 (en)
EP (1) EP1909990B1 (en)
KR (1) KR20080025374A (en)
CN (1) CN101222989B (en)
AT (1) ATE421395T1 (en)
DE (2) DE102005028828B3 (en)
WO (1) WO2006133910A1 (en)

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DE102010028797A1 (en) * 2010-05-10 2011-11-10 Federal-Mogul Sealing Systems Gmbh Method and device for producing sealing rings
DE102012112029A1 (en) * 2012-12-10 2014-06-12 Dorma Gmbh + Co. Kg Method for manufacturing of ring-shaped operation element of door actuator for actuation of door, involves providing door actuator having housing in which functional elements comprising axial profile rolling tube are added
CN104139144A (en) * 2014-08-11 2014-11-12 贵州航天新力铸锻有限责任公司 Device for forging forge piece with ellipsoidal shell
DE102015107475B3 (en) * 2015-05-12 2016-11-17 Schuler Pressen Gmbh A method of making a ring, rolling bearing and apparatus for making a ring
DE102016115043B4 (en) * 2016-08-12 2019-02-21 Bühler Motor GmbH Method for producing a ring gear for a planetary gear and modular system with such a ring gear

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Also Published As

Publication number Publication date
WO2006133910A1 (en) 2006-12-21
CN101222989B (en) 2010-12-15
EP1909990A1 (en) 2008-04-16
CN101222989A (en) 2008-07-16
US20080250838A1 (en) 2008-10-16
ATE421395T1 (en) 2009-02-15
DE102005028828B3 (en) 2006-12-21
KR20080025374A (en) 2008-03-20
DE502006002727D1 (en) 2009-03-12

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