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EP1321203A2 - Forming press - Google Patents

Forming press Download PDF

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Publication number
EP1321203A2
EP1321203A2 EP02027171A EP02027171A EP1321203A2 EP 1321203 A2 EP1321203 A2 EP 1321203A2 EP 02027171 A EP02027171 A EP 02027171A EP 02027171 A EP02027171 A EP 02027171A EP 1321203 A2 EP1321203 A2 EP 1321203A2
Authority
EP
European Patent Office
Prior art keywords
forming
mold
formation
blank
space
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
EP02027171A
Other languages
German (de)
French (fr)
Other versions
EP1321203B1 (en
EP1321203A3 (en
Inventor
Rudolf Denk
Peter Katzlinger
Walter-Josef Schiffler
Helmut Reuter
Lars Huras
Herbert Professor Dr.-Ing. Bauer
Andreas Dr. Haas
Helmut Bögel
Christoph Dr. Hartl
Georg P Holzinger
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke AG
SIEMPELKAMP PRESSEN SYSTEME GmbH AND Co
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
Application filed by Bayerische Motoren Werke AG, SIEMPELKAMP PRESSEN SYSTEME GmbH AND Co filed Critical Bayerische Motoren Werke AG
Publication of EP1321203A2 publication Critical patent/EP1321203A2/en
Publication of EP1321203A3 publication Critical patent/EP1321203A3/en
Application granted granted Critical
Publication of EP1321203B1 publication Critical patent/EP1321203B1/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
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/02—Stamping using rigid devices or tools
    • B21D22/025—Stamping using rigid devices or tools for tubular articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/15—Making tubes of special shape; Making tube fittings
    • B21C37/28—Making tube fittings for connecting pipes, e.g. U-pieces
    • B21C37/29—Making branched pieces, e.g. T-pieces
    • B21C37/294—Forming collars by compressing a fluid or a yieldable or resilient mass in the tube
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
    • B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
    • B21D26/033—Deforming tubular bodies
    • B21D26/037—Forming branched tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
    • B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
    • B21D26/033—Deforming tubular bodies
    • B21D26/047—Mould construction

Definitions

  • the invention relates to a forming press with a forming tool and a mold space between the lower part of the tool and Tool upper part for the production of workpieces metallic materials, especially aluminum, in the way media-assisted hot forming and in the Retractable forming dies with high pressure bores, which on a located in the mold space hollow blank, e.g. Pipe, according to the internal high pressure forming work, being under high pressure Forming liquid supports the forming.
  • the hot forming the blank can within the scope of the invention with the help a high temperature forming liquid. It but there is also the possibility of the blank and / or that Sufficiently heat the forming tool.
  • the invention has for its object a forming press to create the embodiment described above with which forms a shape on a tubular workpiece flawlessly without unwanted stretching of the Can produce workpiece wall.
  • the invention solves this problem with a generic one Forming press in that the upper part of the tool and / or Lower part of the tool for creating a shape on the resulting tubular workpiece one of the formation corresponding mold recess with one in the mold recess has counter-holder guided in the forming direction, of the molding speed and depth of the formed formation controlled.
  • These measures of Invention have the result that with the help of Forming direction as it were under braking and consequently Congestion caused by the counterhold, however, is sufficient do not drain too much material into the mold recess can, so there in the course of hot forming with A high pressure creates a formation in which a unwanted stretching of the workpiece wall is prevented.
  • a targeted material transport is particularly important achieved when the mold recess with the Counterholder orthogonal to the blank in the mold space flows and according to a proposal of the invention with independent Meaning the lower part of the tool or upper part of the tool on the opposite of the mold recess Side a slide guide with one in the molding space retractable slide that during production of the blank material in the direction of the molding suppressed.
  • the slide is over the Mold space center out into the mold space and against the High pressure applied to blank can be moved.
  • the invention provides that the slide after the Creation of the formation with internal high pressure Blank or emerging workpiece in its starting position moves back so that the depicts the tool shape formed thereby.
  • the invention provides that the Counterholder has a central stamp, which for Generation of two with a given distance from each other lying necklines against the direction of movement of the Bracket can be moved into the resulting shape and the middle part of the high pressure Forming in the direction of the center axis of the resulting Tool piece pushed back.
  • a handlebar for an axle beam like the one used in vehicle construction Use finds fasten.
  • Attachment of such handlebars to the axle component during hot forming creates a neck in which after a corresponding Elimination of neck parts of the handlebars articulated becomes.
  • a forming tool is from a forming press with a molding space 1 between the upper part 2 and lower tool part 3 for producing workpieces 4 made of metallic materials, especially aluminum or aluminum alloys, by means of an active media-supported Hot stamping shown.
  • This forming tool has forming dies that can be moved into the mold space 1 5 with high pressure holes 6, which in one in the Mold space 1 located hollow blank 7, according to the Embodiment a tube, according to the internal high pressure forming work. This is done under high-pressure forming standing forming liquid is pressed into the blank 7, which can itself be at a high temperature. But there is also the possibility of the blank 7 or the forming tool preheat to hot stamping under high pressure to be able to make.
  • the upper part 2 of the tool has a formation 8 one of the resulting tubular workpiece Forming 8 corresponding shape recess 9 with an in the mold recess 9 guided in the molding direction 10 on the the molding speed and Forming depth of the resulting formation 8 is checked.
  • the mold recess 9 opens with the counter holder 10 orthogonal to the blank 7 in the molding space 1.
  • FIGS. 1 to 3 has the lower tool part 3 on the mold recess 9 opposite side a slide guide 11 with a in the mold space 1 retractable slide 12 which during the creation of the formation 8 blank material in the direction the formation 8 presses.
  • the slider 12 is over the Center of the mold space into the mold space 1 and against blank 7 pressurized by internal pressure. After this Generating the formation 8, the slide 12 moves in internal high pressure blank 7 or largely created workpiece back to its starting position, see above that also in this area on the workpiece 4 depicts the tool shape formed. - Counterhold and Slide movements are indicated by arrows.
  • the Bracket 10 on a central punch 13, which for Generation of two adjacent to each other with a given distance Neckings 14, 14 'against the direction of movement of the counter holder 10 in the resulting formation 8 is movable and the middle part of the under Internal high-pressure formation 8 in the direction of Center axis of the resulting workpiece displaced.
  • the two neckings 14, 14 ' serve e.g. for fixing a handlebar 15 on a detail in FIG. 6 illustrated axle support 16.
  • the handlebar mounting between the neckings 14, 14 ' is without removal of necking material possible so that the whole Axle component 16 due to high rigidity and strength properties distinguished.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Forging (AREA)

Abstract

The deforming press includes an appropriately-shaped shaping cavity (9) to create a bulge (8) on the tubular workpiece (7), with a counter-holder (10) taken into the cavity in the deforming direction to control the deformation rate and deformation depth. A slide (12) in the side opposite the counter-holder can control the flow of material towards the bulge.

Description

Die Erfindung betrifft eine Umformpresse mit einem Umformwerkzeug und einem Formraum zwischen Werkzeugunterteil und Werkzeugoberteil zum Herstellen von Werkstücken aus metallischen Werkstoffen, insbesondere Aluminium, im Wege einer wirkmedienunterstützten Warmumformung und mit in den Formraum einfahrbaren Umformstempeln mit Hochdruckbohrungen, welche auf einen in dem Formraum befindlichen hohlen Rohling, z.B. Rohr, nach Maßgabe der Innenhochdruckumformung arbeiten, wobei unter Umformhochdruck stehende Umformflüssigkeit die Umformung unterstützt. Die Warmumformung des Rohlings kann im Rahmen der Erfindung mit Hilfe einer hochtemperierten Umformflüssigkeit erfolgen. Es besteht aber auch die Möglichkeit, den Rohling und/oder das Umformwerkzeug hinreichend zu erwärmen.The invention relates to a forming press with a forming tool and a mold space between the lower part of the tool and Tool upper part for the production of workpieces metallic materials, especially aluminum, in the way media-assisted hot forming and in the Retractable forming dies with high pressure bores, which on a located in the mold space hollow blank, e.g. Pipe, according to the internal high pressure forming work, being under high pressure Forming liquid supports the forming. The hot forming the blank can within the scope of the invention with the help a high temperature forming liquid. It but there is also the possibility of the blank and / or that Sufficiently heat the forming tool.

Bei der Erzeugung von Ausformungen an hohlen Rohlingen bzw. den daraus entstehenden hohlen Werkstücken im Zuge der Warmumformung mit Innenhochdruck besteht ein ständiges Problem darin, einen hinreichenden Werkstofftransport zu erreichen, wenn ein unerwünschtes Abstrecken der Werkstückwand verhindert werden soll. Das gilt selbst dann, wenn der Rohling in eine für die Warmumformung vorgegebene Verformungstemperatur gebracht werden kann. Denn häufig lassen sich nur relativ geringe Verformungsgrade erreichen. - Hier setzt die Erfindung ein.When creating moldings on hollow blanks or the resulting hollow workpieces in the course of the Hot forming with internal high pressure is constant The problem is that there is sufficient material transport reach if an undesirable stretching of the workpiece wall should be prevented. This applies even if the Blank into a deformation temperature specified for hot forming can be brought. Because often leave only relatively low degrees of deformation are achieved. - Here uses the invention.

Der Erfindung liegt die Aufgabe zugrunde, eine Umformpresse der eingangs beschriebenen Ausführungsform zu schaffen, mit der sich eine Ausformung an einem rohrförmigen Werkstück in einwandfreier Weise ohne unerwünschtes Abstrecken der Werkstückwand herstellen lässt.The invention has for its object a forming press to create the embodiment described above with which forms a shape on a tubular workpiece flawlessly without unwanted stretching of the Can produce workpiece wall.

Diese Aufgabe löst die Erfindung bei einer gattungsgemäßen Umformpresse dadurch, dass das Werkzeugoberteil und/oder Werkzeugunterteil zur Erzeugung einer Ausformung an dem entstehenden rohrförmigen Werkstück eine der Ausformung entsprechende Formausnehmung mit einem in der Formausnehmung in Ausformrichtung geführten Gegenhalter aufweist, der die Ausformgeschwindigkeit und Ausformtiefe der entstehenden Ausformung kontrolliert. - Diese Maßnahmen der Erfindung haben zur Folge, dass sich mit Hilfe des in Ausformrichtung gleichsam unter Brems- und folglich Stauwirkung geführten Gegenhalters hinreichend viel aber nicht zuviel Werkstoff in die Formausnehmung abfließen kann, so dass dort im Zuge des Warmumformens mit Innenhochdruck eine Ausformung entsteht, bei der ein unerwünschtes Abstrecken der Werkstückwand verhindert wird. Ein gezielter Werkstofftransport wird insbesondere dann erreicht, wenn einerseits die Formausnehmung mit dem Gegenhalter orthogonal zu dem Rohling in den Formraum mündet und nach einem Vorschlag der Erfindung mit selbständiger Bedeutung das Werkzeugunterteil oder Werkzeugoberteil auf der der Formausnehmung gegenüberliegenden Seite eine Schieberführung mit einem in den Formraum vorfahrbaren Schieber aufweist, der während der Erzeugung der Ausformung Rohlingwerkstoff in Richtung der Ausformung drückt. Zweckmäßigerweise ist der Schieber über die Formraummitte hinaus in den Formraum und gegen den Innenhochdruck beaufschlagten Rohling verfahrbar. Weiter sieht die Erfindung vor, dass der Schieber nach dem Erzeugen der Ausformung bei innenhochdruckbeaufschlagtem Rohling bzw. entstehendem Werkstück in seine Ausgangsstellung zurückfährt, so dass sich an dem Werkstück die dadurch gebildete Werkzeugform abbildet.The invention solves this problem with a generic one Forming press in that the upper part of the tool and / or Lower part of the tool for creating a shape on the resulting tubular workpiece one of the formation corresponding mold recess with one in the mold recess has counter-holder guided in the forming direction, of the molding speed and depth of the formed formation controlled. - These measures of Invention have the result that with the help of Forming direction as it were under braking and consequently Congestion caused by the counterhold, however, is sufficient do not drain too much material into the mold recess can, so there in the course of hot forming with A high pressure creates a formation in which a unwanted stretching of the workpiece wall is prevented. A targeted material transport is particularly important achieved when the mold recess with the Counterholder orthogonal to the blank in the mold space flows and according to a proposal of the invention with independent Meaning the lower part of the tool or upper part of the tool on the opposite of the mold recess Side a slide guide with one in the molding space retractable slide that during production of the blank material in the direction of the molding suppressed. Advantageously, the slide is over the Mold space center out into the mold space and against the High pressure applied to blank can be moved. Further The invention provides that the slide after the Creation of the formation with internal high pressure Blank or emerging workpiece in its starting position moves back so that the depicts the tool shape formed thereby.

Nach einem anderen Vorschlag der Erfindung mit selbständiger Bedeutung sieht die Erfindung vor, dass der Gegenhalter einen mittigen Formstempel aufweist, der zur Erzeugung von zwei mit vorgegebenem Abstand voneinander liegenden Aushalsungen entgegen der Bewegungsrichtung des Gegenhalters in die entstehende Ausformung verfahrbar ist und den mittleren Teil der unter Innenhochdruck stehenden Ausformung in Richtung der Mittenachse des entstehenden Werkzeugstückes zurückverdrängt. Zwischen den beiden nebeneinanderliegenden Aushalsungen lässt sich beispielsweise ein Lenker für einen Achsträger wie er im Fahrzeugbau Verwendung findet befestigen. Im Allgemeinen wird zur Befestigung solcher Lenker am Achsbaubeil beim Warmumformen eine Aushalsung erzeugt, in der nach einer entsprechenden Beseitigung von Aushalsungsteilen der Lenker angelenkt wird. Hierbei kann das Problem entstehen, dass durch die Materialbeseitigung an der Aushalsung des Achsbauteils dessen Steifigkeit- und Festigkeitseigenschaften den Anforderungen nicht mehr genügen. Das wird nach Lehre der Erfindung verhindert, weil nunmehr zwei nebeneinanderliegende Aushalsungen erzeugt werden, in denen der Lenker ohne Materialbeseitigung befestigt werden kann. Im Übrigen lassen sich die beiden Aushalsungen unschwer zusammendrücken und mittels eines Lochstempels für die Anlenkung des Lenkers lochen. According to another proposal of the invention with independent Significance the invention provides that the Counterholder has a central stamp, which for Generation of two with a given distance from each other lying necklines against the direction of movement of the Bracket can be moved into the resulting shape and the middle part of the high pressure Forming in the direction of the center axis of the resulting Tool piece pushed back. Between the two adjacent neckings can be, for example a handlebar for an axle beam like the one used in vehicle construction Use finds fasten. Generally becomes Attachment of such handlebars to the axle component during hot forming creates a neck in which after a corresponding Elimination of neck parts of the handlebars articulated becomes. Here the problem can arise that by the Removal of material from the neck of the axle component whose stiffness and strength properties den Requirements no longer meet. According to the teaching of Invention prevented because now two side by side Necklines are generated in which the handlebars can be attached without removing material. Furthermore the two collars can be easily pressed together and by means of a punch for the articulation punch the handlebar.

Im Folgenden wird die Erfindung an einer lediglich ein Ausführungsbeispiel darstellenden Zeichnung näher erläutert. Es zeigen:

Fig. 1
im schematischen Vertikalschnitt ein Umformwerkzeug für die erfindungsgemäße Presse vor der Umformung des Rohlings,
Fig. 2
einen Ausschnitt aus dem Gegenstand nach Fig. 1 im Zuge des Umformvorganges,
Fig. 3
einen Ausschnitt aus dem Gegenstand nach Fig. 1 nach dem Umformvorgang,
Fig. 4
eine andere Ausführungsform des Gegenstandes nach Fig. 2 mit Gegenhalter, jedoch ohne Schieber im Zuge des Umformvorganges,
Fig. 5
den Gegenstand nach Fig. 4 im Zuge der Erzeugung von zwei nebeneinanderliegenden Aushalsungen, und
Fig. 6
ausschnittsweise einen im Zuge der Warmumformung mit Innenhochdruckumformung erzeugten Achsträger mit zwei Aushalsungen für die Befestigung eines Lenkers.
The invention is explained in more detail below on the basis of a drawing which represents only one exemplary embodiment. Show it:
Fig. 1
a schematic vertical section of a forming tool for the press according to the invention before the blank is formed,
Fig. 2
1 in the course of the forming process,
Fig. 3
1 after the shaping process,
Fig. 4
2 another embodiment of the object according to FIG. 2 with counter-holder, but without a slide in the course of the forming process,
Fig. 5
4 in the course of the production of two juxtaposed neckings, and
Fig. 6
excerpts of an axle beam produced in the course of hot forming with internal high pressure forming with two neckings for fastening a handlebar.

In den Figuren ist von einer Umformpresse ein Umformwerkzeug mit einem Formraum 1 zwischen Werkzeugoberteil 2 und Werkzeugunterteil 3 zum Herstellen von Werkstücken 4 aus metallischen Werkstoffen, insbesondere aus Aluminium oder Aluminiumlegierungen, im Wege einer wirkmedienunterstützten Warmumformung dargestellt. Dieses Umformwerkzeug besitzt in den Formraum 1 einfahrbare Umformstempel 5 mit Hochdruckbohrungen 6, welche auf einen in dem Formraum 1 befindlichen hohlen Rohling 7, nach dem Ausführungsbeispiel ein Rohr, nach Maßgabe der Innenhochdruckumformung arbeiten. Dazu wird unter Umformhochdruck stehende Umformflüssigkeit in den Rohling 7 eingedrückt, die selbst hochtemperiert sein kann. Es besteht aber auch die Möglichkeit, den Rohling 7 oder das Umformwerkzeug vorzuwärmen, um eine Warmumformung unter Innenhochdruck vornehmen zu können.In the figures, a forming tool is from a forming press with a molding space 1 between the upper part 2 and lower tool part 3 for producing workpieces 4 made of metallic materials, especially aluminum or aluminum alloys, by means of an active media-supported Hot stamping shown. This forming tool has forming dies that can be moved into the mold space 1 5 with high pressure holes 6, which in one in the Mold space 1 located hollow blank 7, according to the Embodiment a tube, according to the internal high pressure forming work. This is done under high-pressure forming standing forming liquid is pressed into the blank 7, which can itself be at a high temperature. But there is also the possibility of the blank 7 or the forming tool preheat to hot stamping under high pressure to be able to make.

Das Werkzeugoberteil 2 weist zur Erzeugung einer Ausformung 8 an dem entstehenden rohrförmigen Werkstück eine der Ausformung 8 entsprechende Formausnehmung 9 mit einem in der Formausnehmung 9 in Ausformrichtung geführten Gegenhalter 10 auf, der die Ausformgeschwindigkeit und Ausformtiefe der entstehenden Ausformung 8 kontrolliert. Die Formausnehmung 9 mit dem Gegenhalter 10 mündet orthogonal zu dem Rohling 7 in den Formraum 1.The upper part 2 of the tool has a formation 8 one of the resulting tubular workpiece Forming 8 corresponding shape recess 9 with an in the mold recess 9 guided in the molding direction 10 on the the molding speed and Forming depth of the resulting formation 8 is checked. The mold recess 9 opens with the counter holder 10 orthogonal to the blank 7 in the molding space 1.

Nach der in den Fig. 1 bis 3 dargestellten Ausführungsform weist das Werkzeugunterteil 3 auf der der Formausnehmung 9 gegenüberliegenden Seite eine Schieberführung 11 mit einem in den Formraum 1 vorfahrbaren Schieber 12 auf, der während der Erzeugung der Ausformung 8 Rohlingwerkstoff in Richtung der Ausformung 8 drückt. Der Schieber 12 ist über die Formraummitte hinaus in den Formraum 1 und gegen den innenhochdruckbeaufschlagten Rohling 7 verfahrbar. Nach dem Erzeugen der Ausformung 8 fährt der Schieber 12 bei innenhochdruckbeaufschlagtem 7 Rohling bzw. weitgehend entstandenem Werkstück in seine Ausgangsstellung zurück, so dass sich auch in diesem Bereich am Werkstück 4 die dadurch gebildete Werkzeugform abbildet. - Gegenhalter- und Schieberbewegungen sind durch Pfeile angedeutet.According to the embodiment shown in FIGS. 1 to 3 has the lower tool part 3 on the mold recess 9 opposite side a slide guide 11 with a in the mold space 1 retractable slide 12 which during the creation of the formation 8 blank material in the direction the formation 8 presses. The slider 12 is over the Center of the mold space into the mold space 1 and against blank 7 pressurized by internal pressure. After this Generating the formation 8, the slide 12 moves in internal high pressure blank 7 or largely created workpiece back to its starting position, see above that also in this area on the workpiece 4 depicts the tool shape formed. - Counterhold and Slide movements are indicated by arrows.

Bei der Ausführungsform nach den Fig. 4 und 5 weist der Gegenhalter 10 einen mittigen Formstempel 13 auf, der zur Erzeugung von zwei mit vorgegebenem Abstand nebeneinanderliegenden Aushalsungen 14, 14' entgegen der Bewegungsrichtung des Gegenhalters 10 in die entstehende Ausformung 8 verfahrbar ist und den mittleren Teil der unter Innenhochdruck stehenden Ausformung 8 in Richtung der Mittenachse des entstehenden Werkstückes zurückverdrängt. Die beiden Aushalsungen 14, 14' dienen z.B. zur Befestigung eines Lenkers 15 an einem in Fig. 6 ausschnittsweise dargestellten Achsträger 16. Die Lenkerbefestigung zwischen den Aushalsungen 14, 14' ist ohne Beseitigung von Aushalsungsmaterial möglich, so dass sich das gesamte Achsbauteil 16 durch hohe Steifigkeit und Festigkeitseigenschaften auszeichnet.In the embodiment according to FIGS. 4 and 5, the Bracket 10 on a central punch 13, which for Generation of two adjacent to each other with a given distance Neckings 14, 14 'against the direction of movement of the counter holder 10 in the resulting formation 8 is movable and the middle part of the under Internal high-pressure formation 8 in the direction of Center axis of the resulting workpiece displaced. The two neckings 14, 14 'serve e.g. for fixing a handlebar 15 on a detail in FIG. 6 illustrated axle support 16. The handlebar mounting between the neckings 14, 14 'is without removal of necking material possible so that the whole Axle component 16 due to high rigidity and strength properties distinguished.

Claims (6)

Umformpresse mit einem Umformwerkzeug und einem Formraum zwischen Werkzeugunterteil und Werkzeugoberteil zum Herstellen von Werkstücken aus metallischen Werkstoffen, insbesondere Aluminium, im Wege einer wirkmedienunterstützten Warmumformung, und mit in den Formraum einfahrbaren Umformstempeln mit Hochdruckbohrungen, welche auf einen in dem Formraum befindlichen hohlen Rohling, z.B. Rohr, nach Maßgabe der Innenhochdruckumformung arbeiten, wobei unter Umformhochdruck stehende Umformflüssigkeit die Umformung unterstützt, dadurch gekennzeichnet, dass das Werkzeugoberteil (2) und/oder Werkzeugunterteil (3) zur Erzeugung einer Ausformung (8) an dem entstehenden rohrförmigen Werkstück eine der Ausformung (8) entsprechende Formausnehmung (9) mit einem in der Formausnehmung (9) in Ausformrichtung geführten Gegenhalter (10) aufweist, der die Ausformgeschwindigkeit und Ausformtiefe der entstehenden Ausformung (8) kontrolliert.Forming press with a forming tool and a forming space between the lower and upper parts of the tool for the production of workpieces from metallic materials, especially aluminum, by means of hot forming supported by active media, and with forming dies with high-pressure bores that can be moved into the forming space, which are placed on a hollow blank located in the forming space, e.g. a pipe , work in accordance with the internal high pressure forming, wherein forming liquid under high forming pressure supports the forming, characterized in that the upper tool part (2) and / or lower tool part (3) for producing a formation (8) on the resulting tubular workpiece one of the formation (8) Corresponding mold recess (9) with a counter-holder (10) guided in the mold recess (9) in the mold direction, which controls the mold speed and mold depth of the mold (8) formed. Umformpresse nach Anspruch 1, dadurch gekennzeichnet, dass die Formausnehmung (9) mit dem Gegenhalter (10) orthogonal zu dem Rohling (7) in den Formraum (1) mündet.Forming press according to claim 1, characterized in that the mold recess (9) with the counter-holder (10) opens orthogonally to the blank (7) into the mold space (1). Umformpresse nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Werkzeugunterteil (3) oder Werkzeugoberteil (2) auf der der Formausnehmung (9) gegenüberliegenden Seite eine Schieberführung (11) mit einem in den Formraum (1) vorfahrbaren Schieber (12) aufweist, der während der Erzeugung der Ausformung (8) Rohlingwerkstoff in Richtung der Ausformung drückt. Forming press according to Claim 1 or 2, characterized in that the lower tool part (3) or upper tool part (2) has a slide guide (11) on the side opposite the mold recess (9) with a slide (12) which can be moved into the mold space (1), which presses the blank material in the direction of the formation during the formation of the formation (8). Umformpresse nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der Schieber (12) über die Formraummitte hinaus in den Formraum (1) und gegen den innenhochdruckbeaufschlagten Rohling (7) verfahrbar ist.Forming press according to one of claims 1 to 3, characterized in that the slide (12) can be moved beyond the center of the mold space into the mold space (1) and against the blank (7) subjected to high internal pressure. Umformpresse nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass der Schieber (12) nach dem Erzeugen der Ausformung (8) bei innenhochdruckbeaufschlagtem Rohling (7) in seine Ausgangsstellung zurückfährt.Forming press according to one of claims 1 to 4, characterized in that the slide (12) returns to its starting position after the formation (8) has been produced with a blank (7) subjected to high internal pressure. Umformpresse nach Anspruch 1, dadurch gekennzeichnet, dass der Gegenhalter (10) einen mittigen Formstempel (13)aufweist, der zur Erzeugung von zwei mit vorgegebenem Abstand nebeneinanderliegenden Aushalsungen (14, 14') entgegen der Bewegungsrichtung des Gegenhalters (10) in die entstehende Ausformung (8) verfahrbar ist und den mittleren Teil der unter Innenhochdruck stehenden Ausformung (8) in Richtung der Mittenachse des entstehenden Werkstückes zurückverdrängt.Forming press according to claim 1, characterized in that the counter-holder (10) has a central shaping punch (13) which, in order to produce two neckings (14, 14 ') lying next to one another at a predetermined distance, counter to the direction of movement of the counter-holder (10) in the resulting formation (8) is displaceable and displaces the middle part of the formation (8) under internal high pressure in the direction of the center axis of the workpiece being produced.
EP02027171A 2001-12-19 2002-12-05 Forming press Expired - Lifetime EP1321203B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10162440 2001-12-19
DE2001162440 DE10162440A1 (en) 2001-12-19 2001-12-19 forming press

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EP1321203A2 true EP1321203A2 (en) 2003-06-25
EP1321203A3 EP1321203A3 (en) 2005-03-09
EP1321203B1 EP1321203B1 (en) 2007-08-01

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CN103920789A (en) * 2014-05-06 2014-07-16 哈尔滨工业大学 Internal high pressure forming die and method of elbow T-branch pipe

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DE102016212314B4 (en) * 2016-07-06 2022-05-12 Arianegroup Gmbh Process for manufacturing a combustion chamber

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CH295158A (en) * 1950-09-18 1953-12-15 Ici Ltd Method and device for the production of pipe fittings.
US3350905A (en) * 1963-12-21 1967-11-07 Agency Ind Science Techn Liquid pressure bulge forming apparatus
FR2535987A1 (en) * 1982-11-16 1984-05-18 Vallourec Method of forming one or more bulbs by the plastic deformation during expansion of the wall of a section of pipe
WO1995031635A1 (en) * 1994-05-11 1995-11-23 Zeuna-Stärker GmbH & Co. KG Pipe junction and device for producing the same
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JP2001340922A (en) * 2000-05-31 2001-12-11 Kawasaki Steel Corp Manufacturing method of t joint part and hydroform die

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Publication number Priority date Publication date Assignee Title
WO2007003285A1 (en) * 2005-07-02 2007-01-11 Daimlerchrysler Ag Method and device for producing a circumferentially closed hollow profile
CN103920789A (en) * 2014-05-06 2014-07-16 哈尔滨工业大学 Internal high pressure forming die and method of elbow T-branch pipe

Also Published As

Publication number Publication date
DE10162440A1 (en) 2003-07-03
DE50210587D1 (en) 2007-09-13
EP1321203B1 (en) 2007-08-01
EP1321203A3 (en) 2005-03-09

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