EP1321202A2 - Manufacturing method and internal high pression forming tool for carrying out the manufacturing method - Google Patents

Manufacturing method and internal high pression forming tool for carrying out the manufacturing method Download PDF

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Publication number
EP1321202A2
EP1321202A2 EP02024794A EP02024794A EP1321202A2 EP 1321202 A2 EP1321202 A2 EP 1321202A2 EP 02024794 A EP02024794 A EP 02024794A EP 02024794 A EP02024794 A EP 02024794A EP 1321202 A2 EP1321202 A2 EP 1321202A2
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EP
European Patent Office
Prior art keywords
tool
punching
section
internal high
pressure forming
Prior art date
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Granted
Application number
EP02024794A
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German (de)
French (fr)
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EP1321202B1 (en
EP1321202A3 (en
Inventor
Walter-Josef Schiffler
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Bayerische Motoren Werke AG
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Bayerische Motoren Werke AG
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Publication of EP1321202A2 publication Critical patent/EP1321202A2/en
Publication of EP1321202A3 publication Critical patent/EP1321202A3/en
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    • 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
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/24—Perforating, i.e. punching holes
    • B21D28/28—Perforating, i.e. punching holes in tubes or other hollow bodies

Definitions

  • the present invention relates to a manufacturing method according to the preamble of claim 1 and an internal high pressure forming tool according to the Preamble of claim 6.
  • an internal high pressure forming tool in which "Additional tools” such as Stamping plants are integrated.
  • stamping plants are in a mold half of the hydroforming tool several axially movable punching tools integrated.
  • the punching tools holes can be punched either “inwards” or “outwards” as well optionally with or without punching slugs remaining on the component.
  • punching with the punching tool remaining on the component "is the punching tool at one point of the Die-cut edge made blunt. In this area of the punching tool, the The slugs to be punched out are bent inwards and remain on the piece to be produced Component.
  • the object of the invention is to specify a production method or a tool, which enables a greater "vertical range of manufacture”.
  • the basic principle of the invention is through in a wall Internal high pressure forming manufactured component to a through opening punch and then create an internal thread in the through hole in such a way that "internal high pressure forming component" when punching the Through opening and in the production of the internal thread in the Internal high pressure forming tool remains.
  • "internal high pressure forming component” when punching the Through opening and in the production of the internal thread in the Internal high pressure forming tool remains.
  • hydroforming tool a "punching tool” and a “threading tool” integrated.
  • the hydroforming tool integrated a tool that a punching section for punching the Through opening and a further tool section for producing the Has internal thread. That is, with one and the same tool punched and a thread can be produced.
  • the stamping section is preferably executed in two parts. It then has a cone-like shape from the free end of the Punching tool protruding pre-cut section and one itself subsequent "through section".
  • the pre-punching section is preferably bevelled on one side on its end face. Viewed in a side view, the pre-punching section is therefore asymmetrical.
  • the Beveling on the pre-punching section causes the punching slug to be punched out is not punched out of the component, but is folded "inwards". The punching slug thus remains on the component to be manufactured.
  • the one at the Pre-punching section adjoining through section essentially has the Diameter of the through opening to be produced.
  • the stamping tool becomes essentially purely translational postponed, i.e. through the wall of the hydroforming component pressed.
  • the punching tool can be, for example, a hydraulic cylinder be charged. If the through hole is punched, it will "Punching tool" for producing the internal thread is additionally moved in a rotary manner.
  • the Internal threads can be rolled or cut, for example.
  • a form thread is precisely positioned in the hydroforming component become.
  • the strength of the thread to be made depends on the material of the Internal high pressure forming component.
  • a thread produced in this way is at least Suitable for screw connections with light to medium loads.
  • a variety of applications are conceivable in the automotive sector, e.g. the attachment of Attachments to frame or support parts, which are formed by internal high pressure forming were manufactured.
  • Figure 1 shows a schematic representation of an internal high pressure forming tool an upper tool half 1 and a lower tool half 2. Between the two tool halves 1, 2 is in a known manner Hydroforming manufactured "hydroforming component" 3, the e.g. can be made from a "pipe blank".
  • a cylindrical recess 4 is provided in the lower tool part 2, in which a "post-processing tool” 5 is arranged.
  • the "post-processing tool” 5 can be functionally divided into three sections, namely one cone section 6 protruding from the free end, one Pass-through section 7 and a tool section 8 for producing an internal thread.
  • the pre-punching section 6 is asymmetrical in the sectional view shown, i.e. he has a lateral bevel 9 on its end face. Its diameter is smaller than that of the through section 7.
  • the post-processing tool 5 has also in the circumferential area between the pre-punching section 6 and the Pass-through section 7 has a circumferential chamfer 10. From the through section 7 The diameter of the post-processing tool 5 "widens" conically the diameter of the tool section 8, which is used to produce the Internal thread is provided.
  • FIGS. 1 to 7 The individual work steps shown in FIGS. 1 to 7 are described below after the production of the hydroforming component explained.
  • figure 1 is the free end of the prepunching section 6 on the outside of the Inner high pressure forming component 3.
  • the post-processing tool 5 is “delivered”. That is, the pre-punching section 6 punches it Internal high pressure forming component 3. In the area of bevel 9 that will Internal high pressure forming component 3 not punched through. Rather, one arises So-called punching slug 11, which in a further feed movement of the Post-processing tool 5 is bent inwards, which in Figure 3 is shown. By a further feed movement of the post-processing tool 5 is the through opening to be produced in the Internal high-pressure forming component 3 punched through the through section 7, which is shown in Figure 4. The side edges of the Internal high pressure forming component 3 around the through section 7 "clean" bent essentially vertically.
  • the thread After the threading through, the thread is produced, which is shown in FIG. 5 is.
  • the feed movement of the post-processing tool 5 is now a rotational movement is superimposed, as a result of which in the hydroforming component 3, more precisely in its edge regions 12, 13, an internal thread 14 is produced becomes.
  • the thread can be cut or rolled, for example.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Abstract

The deforming process involves producing an internal thread in the component (3) produced by internal high-pressure deformation. During the forging process and the production of the internal thread, the component remains in the internal high-pressure deforming tool (1, 2). This thread maybe produced by a tool sector (8) of the forging tool (5) on one of the other sectors (6, 7)

Description

Die vorliegende Erfindung betrifft ein Fertigungsverfahren gemäß dem Oberbegriff des Patentanspruches 1 sowie ein Innenhochdruckumformwerkzeug gemäß dem Oberbegriff des Patentanspruches 6.The present invention relates to a manufacturing method according to the preamble of claim 1 and an internal high pressure forming tool according to the Preamble of claim 6.

Aus der DE 197 19 426 A1 ist ein Innenhochdruckumformwerkzeug bekannt, in das "Zusatzwerkzeuge" wie z.B. Stanzwerke integriert sind. Bei einem Ausführungsbeispiel sind in eine Werkzeughälfte des Innenhochdruckumformwerkzeugs mehrere axial verschiebliche Stanzwerkzeuge integriert. Mit den Stanzwerkzeugen können Löcher wahlweise "nach innen" oder "nach außen" gestanzt werden sowie wahlweise mit oder ohne am Bauteil verbleibenden Stanzbutzen. Beim Stanzen "mit am Bauteil verbleibenden Stanzbutzen" ist das Stanzwerkzeug an einer Stelle der Stanzkante stumpf ausgebildet. In diesem Bereich des Stanzwerkzeugs wird der auszustanzende Butzen nach innen umgebogen und verbleibt am herzustellenden Bauteil.From DE 197 19 426 A1 an internal high pressure forming tool is known, in which "Additional tools" such as Stamping plants are integrated. In one embodiment are in a mold half of the hydroforming tool several axially movable punching tools integrated. With the punching tools holes can be punched either "inwards" or "outwards" as well optionally with or without punching slugs remaining on the component. When punching "with the punching tool remaining on the component "is the punching tool at one point of the Die-cut edge made blunt. In this area of the punching tool, the The slugs to be punched out are bent inwards and remain on the piece to be produced Component.

Aufgabe der Erfindung ist es, ein Fertigungsverfahren bzw. ein Werkzeug anzugeben, das eine größere "Fertigungstiefe" ermöglicht. The object of the invention is to specify a production method or a tool, which enables a greater "vertical range of manufacture".

Diese Aufgabe wird durch die Merkmale der Patentansprüche 1 und 6 gelöst. Vorteilhafte Ausgestaltungen und Weiterbildungen sind den Unteransprüchen zu entnehmen.This object is solved by the features of claims 1 and 6. advantageous Refinements and developments can be found in the subclaims.

Das Grundprinzip der Erfindung besteht darin, in eine Wandung eines durch Innenhochdruckumformung hergestellten Bauteils eine Durchgangsöffnung zu stanzen und anschließend in der Durchgangsöffnung ein Innengewinde herzustellen und zwar so, dass "Innenhochdruckumformbauteil" beim Stanzen der Durchgangsöffnung und bei der Herstellung des Innengewindes im Innenhochdruckumformwerkzeug verbleibt. Hierzu sind in das Innenhochdruckumformwerkzeug ein "Stanzwerkzeug" und ein "Gewindewerkzeug" integriert.The basic principle of the invention is through in a wall Internal high pressure forming manufactured component to a through opening punch and then create an internal thread in the through hole in such a way that "internal high pressure forming component" when punching the Through opening and in the production of the internal thread in the Internal high pressure forming tool remains. For this purpose are in the hydroforming tool a "punching tool" and a "threading tool" integrated.

Nach einer Weiterbildung der Erfindung ist in das Innenhochdruckumformwerkzeug ein Werkzeug integriert, das einen Stanzabschnitt zum Stanzen der Durchgangsöffnung und einen weiteren Werkzeugabschnitt zur Herstellung des Innengewindes aufweist. Das heißt, mit ein und demselben Werkzeug kann gestanzt und ein Gewinde hergestellt werden. Vorzugsweise ist der Stanzabschnitt zweiteilig ausgeführt. Er weist dann einen zapfenartig vom freien Ende des Stanzwerkzeuges abstehenden Vorstanzabschnitt und einen sich daran anschließenden "Durchstellabschnitt" auf.According to a development of the invention is in the hydroforming tool integrated a tool that a punching section for punching the Through opening and a further tool section for producing the Has internal thread. That is, with one and the same tool punched and a thread can be produced. The stamping section is preferably executed in two parts. It then has a cone-like shape from the free end of the Punching tool protruding pre-cut section and one itself subsequent "through section".

Vorzugsweise ist der Vorstanzabschnitt an seiner Stirnseite einseitig abgeschrägt. In einer Seitenansicht betrachtet ist der Vorstanzabschnitt also asymmetrisch. Die Abschrägung am Vorstanzabschnitt bewirkt, dass der auszustanzende Stanzbutzen nicht aus dem Bauteil herausgestanzt wird, sondern "nach innen" umgeklappt wird. Der Stanzbutzen verbleibt somit am herzustellenden Bauteil. Der sich an den Vorstanzabschnitt anschließende Durchstellabschnitt hat im wesentlichen den Durchmesser der herzustellenden Durchgangsöffnung.The pre-punching section is preferably bevelled on one side on its end face. Viewed in a side view, the pre-punching section is therefore asymmetrical. The Beveling on the pre-punching section causes the punching slug to be punched out is not punched out of the component, but is folded "inwards". The punching slug thus remains on the component to be manufactured. The one at the Pre-punching section adjoining through section essentially has the Diameter of the through opening to be produced.

Während des Stanzvorgangs wird das Stanzwerkzeug im wesentlichen rein translatorisch verschoben, d.h. durch die Wandung des Innenhochdruckumformbauteils gepresst. Das Stanzwerkzeug kann dabei beispielsweise durch einen Hydraulikzylinder beaufschlagt werden. Wenn die Durchgangsöffnung gestanzt ist, wird das "Stanzwerkzeug" zur Herstellung des Innengewindes zusätzlich rotatorisch bewegt. During the stamping process, the stamping tool becomes essentially purely translational postponed, i.e. through the wall of the hydroforming component pressed. The punching tool can be, for example, a hydraulic cylinder be charged. If the through hole is punched, it will "Punching tool" for producing the internal thread is additionally moved in a rotary manner.

Das heißt, der Vorschubbewegung wird eine Drehbewegung überlagert. Das Innengewinde kann beispielsweise gerollt oder geschnitten werden.This means that a rotary movement is superimposed on the feed movement. The Internal threads can be rolled or cut, for example.

Mit der Erfindung wird somit eine noch größere Fertigungstiefe als beim Stand der Technik erreicht. Durch den zusätzlichen integrierten Prozessschritt kann positionsgenau ein Formgewinde in dem Innenhochdruckumformbauteil hergestellt werden. Die Festigkeit des herzustellenden Gewindes, hängt vom Material des Innenhochdruckumformbauteils ab. Ein derart hergestelltes Gewinde ist zumindest für leicht bis mittelschwer belastete Schraubverbindungen geeignet. Insbesondere im Kfz-Bereich sind vielfältige Anwendungen denkbar, wie z.B. die Befestigung von Anbauteilen an Rahmen- bzw. Trägerteilen, die durch Innenhochdruckumformung hergestellt wurden.With the invention is thus an even greater vertical range of manufacture than in the prior art Technology achieved. Thanks to the additional integrated process step a form thread is precisely positioned in the hydroforming component become. The strength of the thread to be made depends on the material of the Internal high pressure forming component. A thread produced in this way is at least Suitable for screw connections with light to medium loads. In particular A variety of applications are conceivable in the automotive sector, e.g. the attachment of Attachments to frame or support parts, which are formed by internal high pressure forming were manufactured.

Zusammenfassend werden mit der Erfindung insbesondere folgende Vorteile erreicht:

  • Hohe Positions- und Wiederholgenauigkeit
  • Wegfall eines außerhalb des Innenhochdruckumformwerkzeugs durchzuführenden Arbeitsschritts
  • Einsatzteile wie z.B. "Einziehmuttern" werden nicht mehr benötigt, wodurch sich eine zusätzliche Gewichtsreduzierung ergibt.
In summary, the following advantages are achieved in particular with the invention:
  • High position and repeat accuracy
  • Elimination of a work step to be carried out outside the hydroforming tool
  • Insert parts such as "pull-in nuts" are no longer required, which results in an additional weight reduction.

Im folgenden wird die Erfindung anhand eines Ausführungsbeispiels im Zusammenhang mit der Zeichnung näher erläutert. Die Figuren 1 bis 7 zeigen die einzelnen Verfahrensschritte.In the following, the invention is related to an exemplary embodiment explained in more detail with the drawing. Figures 1 to 7 show the individual Process steps.

Figur 1 zeigt in schematischer Darstellung ein Innenhochdruckumformwerkzeug mit einer oberen Werkzeughälfte 1 und einer unteren Werkzeughälfte 2. Zwischen den beiden Werkzeughälften 1, 2 befindet sich ein in bekannter Weise durch Innenhochdruckumformung hergestelltes "Innenhochdruckumformbauteil" 3, das z.B. aus einem "Rohrrohling" hergestellt sein kann. Figure 1 shows a schematic representation of an internal high pressure forming tool an upper tool half 1 and a lower tool half 2. Between the two tool halves 1, 2 is in a known manner Hydroforming manufactured "hydroforming component" 3, the e.g. can be made from a "pipe blank".

In dem unteren Werkzeugteil 2 ist eine zylindrische Ausnehmung 4 vorgesehen, in der ein "Nachbearbeitungswerkzeug" 5 angeordnet ist. Das "Nachbearbeitungswerkzeug" 5 lässt sich funktional in drei Abschnitte unterteilen, nämlich einen zapfenartig vom freien Ende abstehenden Vorstanzabschnitt 6, einen Durchstellabschnitt 7 und einen Werkzeugabschnitt 8 zur Herstellung eines Innengewindes.A cylindrical recess 4 is provided in the lower tool part 2, in which a "post-processing tool" 5 is arranged. The "post-processing tool" 5 can be functionally divided into three sections, namely one cone section 6 protruding from the free end, one Pass-through section 7 and a tool section 8 for producing an internal thread.

Der Vorstanzabschnitt 6 ist in der hergezeigten Schnittansicht asymmetrisch, d.h. er weist an seiner Stirnseite eine seitliche Abschrägung 9 auf. Sein Durchmesser ist kleiner als der des Durchstellabschnitts 7. Das Nachbearbeitungswerkzeug 5 weist ferner im Umfangsbereich zwischen dem Vorstanzabschnitt 6 und dem Durchstellabschnitt 7 eine umlaufende Fase 10 auf. Vom Durchstellabschnitt 7 "erweitert" sich der Durchmesser des Nachbearbeitungswerkzeugs 5 konisch auf den Durchmesser des Werkzeugabschnitts 8, der zur Herstellung des Innengewindes vorgesehen ist.The pre-punching section 6 is asymmetrical in the sectional view shown, i.e. he has a lateral bevel 9 on its end face. Its diameter is smaller than that of the through section 7. The post-processing tool 5 has also in the circumferential area between the pre-punching section 6 and the Pass-through section 7 has a circumferential chamfer 10. From the through section 7 The diameter of the post-processing tool 5 "widens" conically the diameter of the tool section 8, which is used to produce the Internal thread is provided.

Im folgenden werden die einzelnen in den Figuren 1 bis 7 dargestellten Arbeitsschritte nach der Herstellung des Innenhochdruckumformbauteils erläutert. In Figur 1 liegt das freie Ende des Vorstanzabschnittes 6 an der Außenseite des Innenhochdruckumformbauteils 3 an.The individual work steps shown in FIGS. 1 to 7 are described below after the production of the hydroforming component explained. In figure 1 is the free end of the prepunching section 6 on the outside of the Inner high pressure forming component 3.

Anschließend wird, wie in Figur 2 dargestellt, das Nachbearbeitungswerkzeug 5 "zugestellt". Das heißt, der Vorstanzabschnitt 6 stanzt das Innenhochdruckumformbauteil 3 an. Im Bereich der Abschrägung 9 wird das Innenhochdruckumformbauteil 3 nicht durchgestanzt. Vielmehr entsteht ein sogenannter Stanzbutzen 11, der bei einer weiteren Vorschubbewegung des Nachbearbeitungswerkzeuges 5 nach innen umgebogen wird, was in Figur 3 dargestellt ist. Durch eine weitere Vorschubbewegung des Nachbearbeitungswerkzeuges 5 wird die herzustellende Durchgangsöffnung in dem Innenhochdruckumformbauteil 3 mittels des Durchstellabschnittes 7 durchgestanzt, was in Figur 4 dargestellt ist. Dabei werden die seitlichen Ränder des Innenhochdruckumformbauteils 3 rund um den Durchstellabschnitt 7 herum "sauber" im wesentlichen senkrecht umgebogen. Subsequently, as shown in FIG. 2, the post-processing tool 5 is “delivered”. That is, the pre-punching section 6 punches it Internal high pressure forming component 3. In the area of bevel 9 that will Internal high pressure forming component 3 not punched through. Rather, one arises So-called punching slug 11, which in a further feed movement of the Post-processing tool 5 is bent inwards, which in Figure 3 is shown. By a further feed movement of the post-processing tool 5 is the through opening to be produced in the Internal high-pressure forming component 3 punched through the through section 7, which is shown in Figure 4. The side edges of the Internal high pressure forming component 3 around the through section 7 "clean" bent essentially vertically.

Nach dem Durchstellen erfolgt die Herstellung des Gewindes, was in Figur 5 dargestellt ist. Der Vorschubbewegung des Nachbearbeitungswerkzeuges 5 wird nun eine rotatorische Bewegung überlagert, wodurch im Innenhochdruckumformbauteil 3, genauer gesagt in seinen Randbereichen 12, 13, ein Innengewinde 14 hergestellt wird. Das Gewinde kann beispielsweise geschnitten oder gerollt werden.After the threading through, the thread is produced, which is shown in FIG. 5 is. The feed movement of the post-processing tool 5 is now a rotational movement is superimposed, as a result of which in the hydroforming component 3, more precisely in its edge regions 12, 13, an internal thread 14 is produced becomes. The thread can be cut or rolled, for example.

Nach der Herstellung des Innengewindes 14 wird das Nachbearbeitungswerkzeug 5 wieder "herausgeschraubt" bzw. zurückgefahren, was in der Figur 6 dargestellt ist. Figur 7 zeigt schließlich das Fertigbauteil.After the internal thread 14 has been produced, the post-processing tool 5 "unscrewed" or retracted again, which is shown in FIG. 6. Figure 7 shows the finished component.

Claims (11)

Fertigungsverfahren mit folgenden Schritten: a) Einbringen eines Bauteilrohlings zwischen Werkzeugteile eines Innenhochdruckumformwerkzeugs, b) Schließen des Innenhochdruckumformwerkzeugs c) Umformen des Bauteilrohlings in ein Innenhochdruckumformbauteil mittels eines Druckmediums, d) Ausstanzen einer Durchgangsöffnung in einer Wandung des Innenhochdruckumformbauteils mittels eines Stanzwerkzeugs, das in dem Innenhochdruckumformwerkzeug angeordnet ist, dadurch gekennzeichnet, dass bei im Innenhochdruckumformwerkzeug (1, 2) verbleibenden Innenhochdruckumformbauteil (3) in der Durchgangsöffnung ein Innengewinde (14) hergestellt wird.Manufacturing process with the following steps: a) inserting a component blank between tool parts of a hydroforming tool, b) Closing the hydroforming tool c) forming the component blank into an internal high-pressure forming component by means of a pressure medium, d) punching out a through opening in a wall of the hydroforming component by means of a punching tool which is arranged in the hydroforming tool, characterized in that an internal thread (14) is produced in the through opening in the case of internal high pressure forming component (3) remaining in the internal high pressure forming tool (1, 2). Fertigungsverfahren nach Anspruch 1, dadurch gekennzeichnet, dass das Innengewinde (14) mittels eines Werkzeugabschnitts (8) des Stanzwerkzeugs (5) hergestellt wird, der sich an einen Stanzabschnitt (6, 7) des Stanzwerkzeugs (5) anschließt.Manufacturing method according to Claim 1, characterized in that the internal thread (14) is produced by means of a tool section (8) of the punching tool (5) which adjoins a punching section (6, 7) of the punching tool (5). Fertigungsverfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass im Anschluss an Schritt c) die Wandung des Innenhochdruckumformbauteils (3) vorgestanzt, mit einem Vorstanzabschnitt (6) des Stanzwerkzeuges (5), der zapfenartig vom freien Ende des Stanzwerkzeuges (5) absteht.Manufacturing method according to Claim 1 or 2, characterized in that , following step c), the wall of the internal high-pressure forming component (3) is pre-punched, with a pre-punching section (6) of the punching tool (5) which projects like a pin from the free end of the punching tool (5). Fertigungsverfahren nach Anspruch 3, dadurch gekennzeichnet, dass in Schritt d) die Durchgangsöffnung mit einem sich an den Vorstanzabschnitt (6) anschließenden Durchstellabschnitt (7) gestanzt wird.Manufacturing method according to claim 3, characterized in that in step d) the passage opening is punched with a through section (7) adjoining the pre-punching section (6). Fertigungsverfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass ein beim Stanzen entstehender Stanzbutzen umgebogen wird und am herzustellenden Fertigteil (3) verbleibt.Manufacturing method according to one of Claims 1 to 4, characterized in that a punching slug which arises during punching is bent over and remains on the finished part (3) to be produced. Innenhochdruckumformwerkzeug mit
mindestens zwei Werkzeugteilen, zwischen die ein Bauteilrohling einbringbar ist,
einem Anschluss für Druckmedium zur Druckbeaufschlagung und Umformung des Bauteilrohlings in ein Innenhochdruckumformbauteil und
einem Stanzwerkzeug, das in einem der Werkzeugteile angeordnet ist, wobei das Stanzwerkzeug einen Stanzabschnitt aufweist zum Stanzen einer Durchgangsöffnung in einer Wandung des Innenhochdruckumformbauteils,
dadurch gekennzeichnet, dass das Innenhochdruckumformwerkzeug (1, 2) ein Werkzeug (5) zur Herstellung eines Innengewindes (14) in der Durchgangsöffnung aufweist.Internal high pressure forming tool with
at least two tool parts, between which a component blank can be inserted,
a connection for pressure medium for pressurizing and forming the component blank into an internal high pressure forming component and
a punching tool which is arranged in one of the tool parts, the punching tool having a punching section for punching a through opening in a wall of the hydroforming component,
characterized in that the internal high pressure forming tool (1, 2) has a tool (5) for producing an internal thread (14) in the through opening. Innenhochdruckumformwerkzeug nach Anspruch 6, dadurch gekennzeichnet, das Werkzeug (5) zur Herstellung des Innengewindes (14) durch einen Werkzeugabschnitt (8) des Stanzwerkzeugs (5) gebildet ist, der sich an den Stanzabschnitt (6, 7) anschließt.Internal high-pressure forming tool according to claim 6, characterized in that the tool (5) for producing the internal thread (14) is formed by a tool section (8) of the punching tool (5) which adjoins the punching section (6, 7). Innenhochdruckumformwerkzeug nach Anspruch 6 oder 7, dadurch gekennzeichnet, dass der Stanzabschnitt (6, 7) mittig einen zapfenartig vom freien Ende des Stanzwerkzeugs (5) abstehenden Vorstanzabschnitt (6) aufweist, dessen Durchmesser kleiner ist als der Durchmesser der Durchgangsöffnung. Internal high-pressure forming tool according to claim 6 or 7, characterized in that the punching section (6, 7) has a central pre-punching section (6) protruding from the free end of the punching tool (5), the diameter of which is smaller than the diameter of the through opening. Innenhochdruckumformwerkzeug nach Anspruch 8, dadurch gekennzeichnet, dass der Vorstanzabschnitt (6) in einer Seitenansicht asymmetrisch ist und an seiner Stirnseite eine Abschrägung (9) aufweist.Internal high-pressure forming tool according to claim 8, characterized in that the pre-punching section (6) is asymmetrical in a side view and has a bevel (9) on its end face. Innenhochdruckumformwerkzeug nach Anspruch 8 oder 9, dadurch gekennzeichnet, dass zwischen dem Vorstanzabschnitt (6) und dem Abschnitt (8) zur Herstellung des Gewindes (14) ein Durchstellabschnitt (7) vorgesehen ist.Internal high-pressure forming tool according to claim 8 or 9, characterized in that a through-section (7) is provided between the pre-punching section (6) and the section (8) for producing the thread (14). Innenhochdruckumformwerkzeug nach Anspruch 10, dadurch gekennzeichnet, dass das Stanzwerkzeug im Übergangsbereich zwischen dem Durchstellabschnitt (7) und dem Werkzeugabschnitt (8) konisch ist.Internal high-pressure forming tool according to claim 10, characterized in that the punching tool is conical in the transition region between the through section (7) and the tool section (8).
EP02024794A 2001-12-19 2002-11-07 Manufacturing method and internal high pression forming tool for carrying out the manufacturing method Expired - Lifetime EP1321202B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10162394 2001-12-19
DE10162394A DE10162394A1 (en) 2001-12-19 2001-12-19 Manufacturing process and hydroforming tool to carry out the manufacturing process

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EP1321202A2 true EP1321202A2 (en) 2003-06-25
EP1321202A3 EP1321202A3 (en) 2004-04-21
EP1321202B1 EP1321202B1 (en) 2005-02-16

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Cited By (1)

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DE102017118505B4 (en) 2017-08-14 2019-09-12 PHOENIX FEINBAU GmbH & Co. KG Process for the preparation of an active element and corresponding active element

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1025471B1 (en) 2017-08-14 2019-03-18 PHOENIX FEINBAU GmbH & Co. KG Process for the preparation of an active element and corresponding active element

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DE19719426A1 (en) * 1997-05-12 1998-11-19 Meleghy Hydroforming Gmbh & Co Method and device for producing a hollow body
DE19733477A1 (en) * 1997-08-02 1999-02-18 Daimler Benz Ag Device for producing by inner high pressure hollow profile joined on wall with seam part
DE19733476A1 (en) * 1997-08-02 1999-02-18 Daimler Benz Ag Method and device for producing a mounting connection on a hollow profile
US6134767A (en) * 1997-04-10 2000-10-24 Meleghy Hydroforming Gmbh & Co. Kg Method for embedding connection elements in a wall

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US6134767A (en) * 1997-04-10 2000-10-24 Meleghy Hydroforming Gmbh & Co. Kg Method for embedding connection elements in a wall
DE19719426A1 (en) * 1997-05-12 1998-11-19 Meleghy Hydroforming Gmbh & Co Method and device for producing a hollow body
DE19733477A1 (en) * 1997-08-02 1999-02-18 Daimler Benz Ag Device for producing by inner high pressure hollow profile joined on wall with seam part
DE19733476A1 (en) * 1997-08-02 1999-02-18 Daimler Benz Ag Method and device for producing a mounting connection on a hollow profile

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017118505B4 (en) 2017-08-14 2019-09-12 PHOENIX FEINBAU GmbH & Co. KG Process for the preparation of an active element and corresponding active element

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EP1321202B1 (en) 2005-02-16
DE50202272D1 (en) 2005-03-24
EP1321202A3 (en) 2004-04-21

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