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EP2569113A1 - Method for producing hollow profiles having a longitudinal flange - Google Patents

Method for producing hollow profiles having a longitudinal flange

Info

Publication number
EP2569113A1
EP2569113A1 EP11723298A EP11723298A EP2569113A1 EP 2569113 A1 EP2569113 A1 EP 2569113A1 EP 11723298 A EP11723298 A EP 11723298A EP 11723298 A EP11723298 A EP 11723298A EP 2569113 A1 EP2569113 A1 EP 2569113A1
Authority
EP
European Patent Office
Prior art keywords
profile
die
longitudinal flange
punch
leg
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
EP11723298A
Other languages
German (de)
French (fr)
Other versions
EP2569113B1 (en
Inventor
Thomas Flehmig
Michael BRÜGGENBROCK
Jörg GORSCHLÜTER
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.)
ThyssenKrupp Steel Europe AG
Original Assignee
ThyssenKrupp Steel Europe AG
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 ThyssenKrupp Steel Europe AG filed Critical ThyssenKrupp Steel Europe AG
Publication of EP2569113A1 publication Critical patent/EP2569113A1/en
Application granted granted Critical
Publication of EP2569113B1 publication Critical patent/EP2569113B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • 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
    • B21D47/00—Making rigid structural elements or units, e.g. honeycomb structures
    • B21D47/01—Making rigid structural elements or units, e.g. honeycomb structures beams or pillars
    • 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
    • B21D19/00—Flanging or other edge treatment, e.g. of tubes
    • B21D19/08—Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws
    • 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
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/01—Bending sheet metal along straight lines, e.g. to form simple curves between rams and anvils or abutments
    • B21D5/015—Bending sheet metal along straight lines, e.g. to form simple curves between rams and anvils or abutments for making 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
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/02—Bending sheet metal along straight lines, e.g. to form simple curves on press brakes without making use of clamping means
    • 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
    • B21D53/00—Making other particular articles
    • B21D53/88—Making other particular articles other parts for vehicles, e.g. cowlings, mudguards

Definitions

  • the present invention relates to a method for
  • U-profile with a first leg and a second leg and wherein with a second die, the U-profile is formed into an O-profile with a longitudinal flange.
  • a method for producing a hollow profile with a longitudinal flange is described for example in DE 10 2005 011 764 AI.
  • the known method is in a first bending die by means of a punch in a cross section
  • U-shaped profile made with parallel legs.
  • Tubular body formed with a closed cross-section.
  • legs in at least one of the legs in a longitudinal direction
  • Longitudinal flange serves for example for the connection of Body panels. At the dimensional accuracy of hollow profiles ever higher demands are made. This applies in particular to the sections of the hollow profiles with which the hollow sections are connected to other components.
  • the present invention therefore has the object of specifying a process-reliable method for producing hollow sections with a longitudinal flange.
  • this object is achieved by a method for producing hollow profiles with a longitudinal flange, in soft by inserting a punch in a first die between the S empel and the first die arranged board to a U-profile with a first Leg and a second leg is preformed and with a second die the U-profile to a
  • O-profile is formed with a longitudinal flange, wherein the
  • a Leksflanschschenkelabsacrificing is formed and the Leksflanschsschenabrough is formed during the molding of the U-profile to an O-profile substantially form presented to a part of the longitudinal flange.
  • at least part of the longitudinal length is already formed in the preforming step in which a U-profile is produced, so that the dimensions of a part of the longitudinal flange can be specified precisely.
  • the overall dimensional stability of the hollow profile can thus be improved, since in the later Umformschri11en the high dimensional accuracy of the longitudinal flange is no longer explicit
  • Retraction according to the invention means that the punch and the first die
  • Stamp and die This can be ensured either by a movement of the punch or the first die but also by a movement of both the punch and the first die.
  • a first embodiment of the method provides that, at the beginning of the preforming, the longitudinal flange leg section is formed by means of a displaceable partial punch of the punch positioned above the sliding-in retainer, and by further retraction of the punch into the first Gesenk the part punches and the side wall are each moved from the protruding position into a flush position and the board is preformed to the U-profile.
  • the position of the board is precisely specified and the risk of warping by a concurrent
  • the method can be further developed by using a first die with at least one first displaceable sidewall and the first sidewall in the case of
  • Shapes of the U-profile to the O-profile with longitudinal flange by means of the two th die is moved in the retraction.
  • the sidewall can laterally support the U-profile during molding to the O-profile with longitudinal flange, so that the process safety of the method can be improved.
  • a second die is used, which is a first, the
  • Longitudinal flange leg section associated with part die and at least one additional part die includes, and the U-profile is formed to the O-profile by the other part of the die is lowered before the first part of the die.
  • process security can be further improved in forming the U-profile to the O-profile.
  • Double longitudinal flanges are characterized by an increased rigidity, so that higher forces can be introduced into the hollow profile with them.
  • the method can further be characterized in that before forming the U-Prof ils to the O-profile with
  • a support core in particular an articulated support core, is introduced into the U-profile.
  • Support core can the U-profile during molding to the
  • O-profile are supported from the inside and a buckling can be avoided.
  • the use of an articulated Support core allows a support even if the U-profile is to be formed into a curved hollow profile.
  • an articulated support core also
  • the method can also be achieved by shaping the U-profile with the O-profile
  • the support core is pulled before or after the cohesive closing. A pulling of the support core before the cohesive closing can the
  • a monolithic board a tailored blank or a patchwork blank.
  • a monolithic board is understood to be one which consists of a single sheet of a given thickness and a single material.
  • Monolithic boards can be special be inexpensively separated from cold or hot tapes.
  • "Tailored blanks” refers to blanks that are assembled from individual sheets of different thickness, strength and / or surface coating. As a result, it is possible, on the one hand, to use a thicker and / or even thinner, but also higher-strength material in places with a higher load, so that a lower weight is achieved with a higher load capacity. On the other hand, can be used at the remaining locations on thinner sheets. Tailored blanks thus allow a reduction in weight with the same strength properties.
  • motherboards are strengthened locally by attaching individual additional reinforcement plates. Motherboard and reinforcing plates can be easily shaped together afterwards. The laborious and costly
  • Tailored blanks are also suitable as baseplates for patchwork blanks, whereby the reinforcing sheets can be used to provide localized reinforcement in a small area, so that individual sheet metal can be used for the blanks
  • Tailored blanks a further reduced thickness or another material can be selected.
  • Fig. 1 shows a circuit board for producing a hollow profile
  • Figure 2 shows the board shown in Figure 1 in an arrangement between a punch and a first die.
  • FIG. 3 is a detail of that in FIG. 1
  • Fig. 5 shows a board shown in FIG. 1
  • Fig. 6 is a schematic diagram illustrating the in the
  • Fig. 1 to 5 shown manufacturing process
  • Fig. 7 shows a circuit board for producing a hollow profile
  • FIG. 8 shows the board arranged between a punch and a first die, shown in FIG. 7;
  • FIG. 9 shows the printed circuit board preformed to an U-profile, shown in FIG. 7;
  • FIG. 10 shows a U-profile shown in FIG. 9
  • Fig. 11 partially shaped to an O-profile, in the
  • FIG. 12 shows the circuit board shown in FIG. 7
  • Fig. 13 is a schematic diagram illustrating the in the
  • Fig. 7 to 12 shown manufacturing process.
  • Fig. 1 shows a circuit board 1 which is specific to the
  • the blank of the board 1 depends mainly on the geometry of the finished hollow profile but also of the
  • the cut board 1 is disposed between a punch 2 and a first die 3.
  • the first die. 3 is composed of two side walls 4 and 6 and a bottom element 5 together.
  • the punch 2 in the first die 3 By retracting the punch 2 in the first die 3, the board 1 is preformed into a U-profile 7.
  • a first leg 8 and a second leg 9 and in the first leg is a
  • the U-profile is joined to an O-profile by means of a second die 12
  • FIG. 4 shows a U-profile 13 which has not yet been completely transformed into an O-profile
  • the second die 12 used for molding is 12 shown in a slightly raised position.
  • the U-profile 13 is formed around the support core 11.
  • the shape of the Leksflanschschenke! Section 10 is essentially preserved. In the area of
  • FIG. 5 shows the corresponding hollow profile 1 14 after the laser welding of the edge joint formed by the two legs and pulling the support core 11.
  • Longitudinal of the curved hollow section 14 is a doubled longitudinal flange 15 is formed, can be attached to the other components of the hollow section 14 ,
  • Fig. 6 shows greatly simplifies the manufacture of the
  • a U-profile 17 is first preformed with a first leg 18 and a second leg 19.
  • a first leg 18 is first preformed with a first leg 18 and a second leg 19.
  • Longitudinal flange leg portion 20 is substantially form presented doubled and to a longitudinal flange 22nd
  • the longitudinal flange 22 therefore has a particularly good dimensional stability and due to the doubling a tremendous
  • the longitudinal flange 22 can then very well for
  • Attachment of the hollow profile or for fastening other components can be used on the hollow profile.
  • the edge impact 23 is at least partially closed by laser welding, so that the hollow profile has a very high Stiffness receives. Preference is given, as in the
  • Fig. 7 shows a further cut board 24 for
  • Preparation 'of a hollow profile. This is arranged between a punch 25 and a first die 26, as illustrated in FIG. 8.
  • the punch 25 in this case has a partial punch 27 positioned in the retraction direction R above.
  • the TeiIstempel 27 is associated with a displaceable side wall 28 of the first die 26, which is also positioned above. Between the partial stamp 27 and the
  • the second die 34 is composed of a first part die 35 associated with the longitudinal flange leg portion 29 and a further part die 36, FIG. 10.
  • Partial die 36 moves in the direction of the first die 26. In this case, the part of the U-profile facing away from the longitudinal flange leg section 29 is deformed. Subsequently, the part of the die 35 lowers, so that an O-profile is formed. After pulling the support core 33 and the welding of the
  • FIG. 12 shown Hollow profile 37 with longitudinal flange 38. As can be seen in FIG. 12, the hollow profile 37 can be shaped very complexly,
  • Method according to the invention the production of a hollow profile with a longitudinal flange 38 of high dimensional accuracy.
  • Fig. 13 the individual process steps of the last embodiment of a Hersannon invention of a hollow profile based on the individual cross-sectional shapes during the process steps illustrated (core without support shown).
  • the board 39 is preformed into a U-profile 40 having a first leg 41 and a second leg 42.
  • a first leg 41 In this case, in the first leg 41 a
  • the U-profile 40 is then formed via an intermediate profile 44 to an O-profile 45 and the edge joint 46 welded.
  • the contour enclosing the cavity forms, together with the longitudinal flange 47, a shape reminiscent of the numeral "6".

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Abstract

The invention relates to a method for producing hollow profiles having a longitudinal flange, wherein a blank disposed between a punch and a first die is preformed into a U-profile having a first limb and a second limb by driving a punch into a first die, and wherein the U-profile is formed into an O-profile having a longitudinal flange by means of a second die. The aim of disclosing a reliable method for producing hollow profiles having a longitudinal flange and allowing better control of the dimensions and shape of the longitudinal flange is achieved in that a longitudinal flange limb segment is formed in at least the first limb when preforming the blank into the U-profile, and the longitudinal flange limb segment is formed into a part of the longitudinal flange while substantially retaining the shape thereof during the forming of the U-profile into an O-profile.

Description

Verfahren zur Herstellung von Hohlprofilen mit einem  Process for producing hollow profiles with a
Längsflansch  longitudinal flange
Die vorliegende Erfindung betrifft ein Verfahren zur The present invention relates to a method for
Herstellung von Hohlprofilen mit einem Längsflansch, wobei durch Einfahren eines Stempels in ein erstes Gesenk eine zwischen dem Stempel und dem ersten Gesenk angeordnete Production of hollow profiles with a longitudinal flange, wherein by retracting a punch in a first die one arranged between the punch and the first die
Platine zu einem U-Profil mit einem ersten Schenkel und einem zweiten Schenkel vorgeformt wird und wobei mit einem zweiten Gesenk das U-Profil zu einem O-Profil mit einem Längsflansch geformt wird . Board is preformed into a U-profile with a first leg and a second leg and wherein with a second die, the U-profile is formed into an O-profile with a longitudinal flange.
Ein Verfahren zum Herstellen eines Hohlprofils mit einem Längsflansch wird beispielsweise in der DE 10 2005 011 764 AI beschrieben . Bei dem bekannten Verfahren wird in einem ersten Biegegesenk mittels eines Stempels ein im Querschnitt A method for producing a hollow profile with a longitudinal flange is described for example in DE 10 2005 011 764 AI. In the known method is in a first bending die by means of a punch in a cross section
U-förmiges Profil mit parallelen Schenkeln hergestellt . U-shaped profile made with parallel legs.
Anschließend wird dieses U-förmige Profil in einem zweiten Biegegesenk mittels eines oberen Biegegesenks zu einem Subsequently, this U-shaped profile in a second bending die by means of an upper bending die to a
Rohrkörper mit geschlossenem Querschnitt geformt. Dabei wird in zumindest einem der Schenkel ein in Längsrichtung Tubular body formed with a closed cross-section. In this case, in at least one of the legs in a longitudinal direction
verlaufender Flansch gebildet . Bei dem aus der extending flange formed. In the from the
DE 10 2005 011 764 AI bekannten Verfahren muss also das U-förmige Profil aus dem ersten Biegegesenk entnommen und in das zweite Biegegesenk eingebracht werden, um zu einem DE 10 2005 011 764 AI known method must therefore be removed from the first Biegegesenk the U-shaped profile and introduced into the second bending die to one
O-förmigen Profil umgeformt werden zu können . O-shaped profile to be transformed.
Hohlprofile mit Längsflansch finden insbesondere im Hollow profiles with longitudinal flange find in particular
Fahrzeugbau als KarosSerieelemente Verwendung . Der Vehicle construction as KarosSerieelemente use. Of the
Längsflansch dient dabei beispielsweise zur Anbindung von Karosserieblechen . An die Maßhaltigkeit von Hohlprofilen werden immer höhere Anforderungen gestellt . Dies gilt insbesondere für die Abschnitte der Hohlprofile, mit denen die Hohlprofile mit anderen Bauteilen verbunden werden . Longitudinal flange serves for example for the connection of Body panels. At the dimensional accuracy of hollow profiles ever higher demands are made. This applies in particular to the sections of the hollow profiles with which the hollow sections are connected to other components.
Diesen Anforderungen werden mit dem herkömmlichen Verfahren gefertigte Hohlprofile mit Längsflansch nicht immer gerecht , da s ich aufgrund des Transports des U-förmigen Profils von dem ersten Gesenk zu dem zweiten Gesenk zwangsläufig eine gewisse Ungenauigkeit ergibt , wenn nicht sehr aufwändige und kostenintensive Maßnahmen ergriffen werden . Dies gilt insbesondere für gekrümmte Hohlprofile . These requirements are produced with the conventional method hollow profiles with Längsflansch not always, since I inevitably results in a certain inaccuracy due to the transport of the U-shaped profile of the first die to the second die, if not very complex and costly measures are taken. This applies in particular to curved hollow profiles.
Ausgehend von dem voran stehend genannten Stand der Technik liegt der vorliegenden Erfindung daher die Aufgabe zugrunde, ein prozesssicheres Verfahren zum Herstellen von Hohlprofilen mit einem Längsflansch anzugeben . Based on the above-mentioned prior art, the present invention therefore has the object of specifying a process-reliable method for producing hollow sections with a longitudinal flange.
Nach einer ersten Lehre der Erfindung wird diese Aufgabe durch ein Verfahren zur Herstellung von Hohlprofilen mit einem Längsflansch gelöst , bei weichem durch Einfahren eines Stempels in ein erstes Gesenk eine zwischen dem S empel und dem ersten Gesenk angeordnete Platine zu einem U-Profil mit einem ersten Schenkel und einem zweiten Schenkel vorgeformt wird und mit einem zweiten Gesenk das U-Profil zu einem According to a first teaching of the invention, this object is achieved by a method for producing hollow profiles with a longitudinal flange, in soft by inserting a punch in a first die between the S empel and the first die arranged board to a U-profile with a first Leg and a second leg is preformed and with a second die the U-profile to a
O-Profil mit einem Längsflansch geformt wird, wobei beimO-profile is formed with a longitudinal flange, wherein the
Vorformen der Platine zu dem U-Profil in zumindest dem ersten Schenkel ein Längsflanschschenkelabschnitt ausgeformt wird und der Längsflanschsschenkelabschnitt während des Formens des U-Profils zu einem O-Profil im Wesentlichen formwahrend zu einem Teil des Längsflansches ausgebildet wird. Erfindungsgemäß wird demnach bereits bei dem Vorformschritt , bei welchem ein U-Profil erzeugt wird, zumindest ein Teil des Längsfiarisches ausgeformt, so dass die Abmessungen des eines Teils des Längsflansches genau vorgegeben werden können . Die gesamte Maßhaltigkeit des Hohlprofils lässt sich damit verbessern, da in den späteren Umformschri11en die hohe Maßhaltigkeit des Längsflansches nicht mehr explizit Preforming the board to the U-profile in at least the first leg a Längsflanschschenkelabschnitt is formed and the Längsflanschsschenabschnitt is formed during the molding of the U-profile to an O-profile substantially formwahrend to a part of the longitudinal flange. Accordingly, according to the invention, at least part of the longitudinal length is already formed in the preforming step in which a U-profile is produced, so that the dimensions of a part of the longitudinal flange can be specified precisely. The overall dimensional stability of the hollow profile can thus be improved, since in the later Umformschri11en the high dimensional accuracy of the longitudinal flange is no longer explicit
berücksichtigt werden muss . Einfahren im Sinne der Erfindung bedeutet , dass sich der Stempel und das erste Gesenk must be taken into account. Retraction according to the invention means that the punch and the first die
aufeinanderzubewegen, also eine Relativbewegung zwischenmove towards each other, so a relative movement between
Stempel und Gesenk . Dies kann entweder durch eine Bewegung des Stempels oder des ersten Gesenks aber auch durch eine Bewegung von sowohl des Stempels als auch des ersten Gesenks gewährleistet werden . Stamp and die. This can be ensured either by a movement of the punch or the first die but also by a movement of both the punch and the first die.
Eine erste Ausgestaltung des Verfahrens sieht vor, dass zu Beginn des Vorformens mitteis eines in Einfahrriehtung vorstehend positionierten, verschiebbaren Teilstempels des Stempels und einer entgegen der Einfahrriehtung vorstehend positionierten, verschiebbaren Seitenwand des ersten Gesenks der Längsflanschschenkelabschnitt ausgeformt wird, durch weiteres Einfahren des Stempels in das erste Gesenk der Teilstempel und die Seitenwand jeweils von der vorstehenden Position in eine bündige Position verschoben werden und die Platine zu dem U-Profil vorgeformt wird . Der A first embodiment of the method provides that, at the beginning of the preforming, the longitudinal flange leg section is formed by means of a displaceable partial punch of the punch positioned above the sliding-in retainer, and by further retraction of the punch into the first Gesenk the part punches and the side wall are each moved from the protruding position into a flush position and the board is preformed to the U-profile. Of the
Längsflanschschenkelabschnitt kann somit zum frühest  Längsflanschschenkelabschnitt can thus earliest
möglichen Zeitpunkt ausgeformt werden . Zu diesem Zeitpunkt ist die Position der Platine genau vorgegeben und die Gefahr eines Verziehens durch einen gleichzeitig ablaufenden possible date to be formed. At this time, the position of the board is precisely specified and the risk of warping by a concurrent
Tiefziehvorgang weitgehend gemindert . Weiterbilden lässt sich das Verfahren ferner dadurch , dass ein erstes Gesenk mit mindestens einer ersten verschiebbaren Seitenwand verwendet wird und die erste Seitenwand beim Deep drawing process largely reduced. Furthermore, the method can be further developed by using a first die with at least one first displaceable sidewall and the first sidewall in the case of
Formen des U-Profils zu dem O-Profil mit Längsflansch mittels des zwei ten Gesenks in Einfahrrichtung verschoben wird . Die Seitenwand kann das U-Profil auf diese Weise während des Formens zu dem O-Profil mit Längsflansch seitlich stützen , so dass die ProzessSicherheit des Verfahrens verbessert werden kann . Shapes of the U-profile to the O-profile with longitudinal flange by means of the two th die is moved in the retraction. The sidewall can laterally support the U-profile during molding to the O-profile with longitudinal flange, so that the process safety of the method can be improved.
In einer weiteren Ausgestaltung des Verfahrens wird ein zweites Gesenk verwendet, welches ein erstes , dem In a further embodiment of the method, a second die is used, which is a first, the
Längs flanschschenkelabschnitt zugeordnetes Teilgesenk und mindestens ein weiteres Teilgesenk umfasst , und das U-Profil zu dem O-Profil geformt wird, indem das weitere Teilgesenk vor dem ersten Teilgesenk abgesenkt wird . Durch die Teilung des zweiten Gesenks kann die ProzessSicherheit beim Formen des U-Profils zu dem O-Profil weiter verbessert werden. Eine nächste Weiterbildung sieht vor, das U-Profil zu einem O-Profil. mit einem gedoppelten Längsflansch auszubilden . Longitudinal flange leg section associated with part die and at least one additional part die includes, and the U-profile is formed to the O-profile by the other part of the die is lowered before the first part of the die. By dividing the second die, process security can be further improved in forming the U-profile to the O-profile. A next development provides, the U-profile to an O-profile. form with a doubled longitudinal flange.
Gedoppelte Längsflansche zeichnen sich durch eine erhöhte Steifigkeit aus , so dass mit ihnen höhere Kräfte in das Hohlprofil eingeleitet werden können . Double longitudinal flanges are characterized by an increased rigidity, so that higher forces can be introduced into the hollow profile with them.
Weiter ausgestalten lässt sich das Verfahren ferner dadurch, dass vor dem Formen des U-Prof ils zu dem O-Profil mit Further configured, the method can further be characterized in that before forming the U-Prof ils to the O-profile with
Längsflansch ein Stützkern, insbesondere ein gegliederter Stütz kern, in das U-Profil eingebracht wird. Mit dem Longitudinal flange a support core, in particular an articulated support core, is introduced into the U-profile. With the
Stützkern kann das U-Profil während des Formens zu dem Support core can the U-profile during molding to the
O-Profil von innen abgestützt werden und ein Einknicken vermieden werden . Die Verwendung eines gegliederten Stützkerns ermöglicht eine Abstützung auch dann, wenn das U-Profil zu einem gekrümmten Hohlprofil geformt werden soll . Insbesondere kann ein gegliederter Stützkern auch O-profile are supported from the inside and a buckling can be avoided. The use of an articulated Support core allows a support even if the U-profile is to be formed into a curved hollow profile. In particular, an articulated support core also
zerstörungsfrei aus dem gekrümmten Hohlprofil gezogen werden. nondestructively pulled out of the curved hollow profile.
Weiterbilden lasst sich das Verfahren auch dadurch, dass durch das Formen des U-Profils zu dem O-Profil mit Further, the method can also be achieved by shaping the U-profile with the O-profile
Längsflansch ein Kantenstoß gebildet wird und das O-Prof il entlang des Kantenstoßes zumindest teilweise stoffschlüssig geschlossen wird . Bei der Verwendung des Laserschweißens zum Schließen des Kantenstoßes kann der Wärmeeintrag in das Longitudinal edge an edge joint is formed and the O-Prof il along the edge joint is at least partially closed cohesively. When using laser welding to close the edge impact, the heat input into the
Hohlprofil minimiert werden . Eine Veränderung der Hollow profile to be minimized. A change in the
Materialeigenschaften des Hohlprofils durch das Schließen kann somit weitgehend vermieden werden. Material properties of the hollow profile by closing can thus be largely avoided.
In einer weiteren Ausgestaltung wird der Stützkern vor oder nach dem stoffschlüssigen Schließen gezogen . Ein Ziehen des Stützkernes vor dem stoffschlüssigen Schließen kann die In a further embodiment, the support core is pulled before or after the cohesive closing. A pulling of the support core before the cohesive closing can the
Entnahme des Stützkernes vereinfachen . Beispielsweise ist das Risiko einer versehentlichen stoffschlüssigen Verbindung des Stützkerns mit dem O-Profil vermindert . Zudem kann der To facilitate removal of the support core. For example, the risk of accidental cohesive connection of the support core is reduced with the O-profile. In addition, the
Kantenstoß auf diese Weise zum Schließen von innen her zugänglich gemacht werden . Andererseits ermöglicht ein Z iehen des Stützkerns eine höhere Maßhaltigkeit des zu fertigenden Hohlprofils . Edge impact made accessible in this way for closing from the inside. On the other hand, a Z draw of the support core allows a higher dimensional accuracy of the hollow profile to be produced.
Gemäß einer nächsten Weiterbi Idung wird das Hohlprofil aus einer monolithischen Platine, einem Tailored Blank oder einem Patchwork Blank gefertigt . Unter einer monolithischen Platine wird eine solche verstanden, die aus einem einzelnen Blech einer bestimmten Dicke und aus einem einzigen Material besteht . Monolithische Platinen können besonders kostengünstig aus Kalt- oder Warmbändern herausgetrennt werden . Als "Tailored Blanks" werden Platinen bezeichnet , die aus Einzelblechen unterschiedlicher Dicke , Festigkeit und/oder Oberflächenbeschichtung zusammengefügt sind . Dadurch lässt sich einerseits an Stellen mit höherer Belastung ein dickeres und/oder ein auch dünneres aber dafür höherfestes Material einsetzen, so dass bei höherer Belastbarkeit ein geringeres Gewicht erzielt wird . Andererseits kann an den übrigen Stellen auf dünnere Bleche zurückgegriffen werden . Tailored Blanks ermöglichen also eine Gewichtsreduktion bei gleichbleibenden Festigkeitseigenschaften . Bei "Patchwork Blanks " werden Grundplatinen durch die Befestigung einzelner zusätzlicher Verstärkungsbleche lokal verstärkt . Grundplatine und Verstärkungsbleche lassen sich im Anschluss problemlos gemeinsam umformen . Die arbeits- und kostenaufwändige According to a next Weiterbi Idung the hollow profile is made of a monolithic board, a tailored blank or a patchwork blank. Under a monolithic board is understood to be one which consists of a single sheet of a given thickness and a single material. Monolithic boards can be special be inexpensively separated from cold or hot tapes. "Tailored blanks" refers to blanks that are assembled from individual sheets of different thickness, strength and / or surface coating. As a result, it is possible, on the one hand, to use a thicker and / or even thinner, but also higher-strength material in places with a higher load, so that a lower weight is achieved with a higher load capacity. On the other hand, can be used at the remaining locations on thinner sheets. Tailored blanks thus allow a reduction in weight with the same strength properties. In patchwork blanks, motherboards are strengthened locally by attaching individual additional reinforcement plates. Motherboard and reinforcing plates can be easily shaped together afterwards. The laborious and costly
Anbringung von Verstärkungen am späteren Bauteil kann somit entfallen . Als Grundplatinen für Patchwork Blanks kommen insbesondere auch Tailored Blanks in Frage , wobei mit den Verstärkungsblechen für eine kleinräumige lokale Verstärkung gesorgt werden kann, so dass für die Einzelbleche des  Attachment of reinforcements on the later component can thus be omitted. Tailored blanks are also suitable as baseplates for patchwork blanks, whereby the reinforcing sheets can be used to provide localized reinforcement in a small area, so that individual sheet metal can be used for the blanks
Tailored Blanks eine weiter verringerte Dicke oder ein anderes Material gewählt werden kann . Tailored blanks a further reduced thickness or another material can be selected.
Im Weiteren soll die Erfindung anhand einer Zeichnung in Verbindung mit Ausführungsbeispielen näher erläutert werden. Die Zeichnung zeigt schercatisch in : In addition, the invention will be explained in more detail with reference to a drawing in conjunction with exemplary embodiments. The drawing shows schercatisch in:
Fig. 1 eine Platine zur Herstellung eines Hohlprofils Fig. 1 shows a circuit board for producing a hollow profile
gemäß eines ersten erfindungsgemäßen  according to a first invention
Ausführungsbeispiels ; Fig. 2 die in Fig. 1 gezeigte Platine in einer Anordnung zwischen einem Stempel und einem ersten Gesenk; Embodiment; Figure 2 shows the board shown in Figure 1 in an arrangement between a punch and a first die.
Fig. 3 einen Ausschnitt des aus der in der Fig. 1 FIG. 3 is a detail of that in FIG. 1
gezeigten Platine vorgeformten U-Profils;  shown board pre-formed U-profile;
Fig. 4 einen Zwischenschritt beim Formen des 4 shows an intermediate step in the molding of
ausschnittsweise in der Fig. 3 gezeigten ü-Profils zu einem O-Profil;  fragmentary in the Figure 3 ü-profile to an O-profile;
Fig. 5 ein aus der in der Fig. 1 gezeigten Platine Fig. 5 shows a board shown in FIG. 1
hergestelltes Hohlprofil mit Längsflansch;  manufactured hollow profile with longitudinal flange;
Fig. 6 eine Prinzipskizze zur Veranschaulichung des in den Fig. 6 is a schematic diagram illustrating the in the
Fig. 1 bis 5 gezeigten Herstellungsverfahrens;  Fig. 1 to 5 shown manufacturing process;
Fig. 7 eine Platine zur Herstellung eines Hohlprofils Fig. 7 shows a circuit board for producing a hollow profile
gemäß einem zweiten erfindungsgemäßen  according to a second invention
Ausführungsbeispiels;  Embodiment;
Fig. 8 die zwischen einem Stempel und einem ersten Gesenk angeordnete, in der Fig. 7 gezeigte Platine; FIG. 8 shows the board arranged between a punch and a first die, shown in FIG. 7; FIG.
Fig. 9 die zu einem Ü-Profil vorgeformte, in der Fig. 7 gezeigte Platine; FIG. 9 shows the printed circuit board preformed to an U-profile, shown in FIG. 7; FIG.
Fig. 10 einen in das in der Fig. 9 gezeigte U-Profil 10 shows a U-profile shown in FIG. 9
eingebrachten Stützkern und ein zum Formen des U-Profils zu einem O-Profil vorgesehenes, zweites Gesenk; Fig. 11 das teilweise zu einem O-Profil geformte, in derintroduced support core and provided for forming the U-profile to an O-profile, second die; Fig. 11 partially shaped to an O-profile, in the
Fig. 9 gezeigte U-Profil ; Fig. 9 U-profile shown;
Fig. 12 das aus der in der Fig. 7 gezeigten Platine FIG. 12 shows the circuit board shown in FIG. 7
gefertigte Hohlprofil ;  manufactured hollow profile;
Fig . 13 eine Prinzipskizze zur Veranschaulichung des in den Fig. 13 is a schematic diagram illustrating the in the
Fig. 7 bis 12 gezeigten Herstellungsverfahrens. Fig . 1 zeigt ein Platine 1 , welche spezifisch für die  Fig. 7 to 12 shown manufacturing process. Fig. 1 shows a circuit board 1 which is specific to the
Herstellung eines Hohlprofils mit Längsflansch zugeschnitten ist . Der Zuschnitt der Platine 1 hängt vor allem von der Geometrie des fertigen Hohlprofils aber auch von der  Production of a hollow profile with longitudinal flange is cut. The blank of the board 1 depends mainly on the geometry of the finished hollow profile but also of the
Geometrie des während des Vorformens ausgebildeten Geometry of the formed during the preforming
Längs flanschschenkelabschnitts 10 ab . Wie in der Fig . 2 gezeigt wird, ist die zugeschnittene Platine 1 zwischen einem Stempel 2 und einem ersten Gesenk 3 angeordnet . Das erste Gesenk. 3 setzt sich aus zwei Seitenwänden 4 und 6 sowie einem Bodenelement 5 zusammen . Durch Einfahren des Stempels 2 in das erste Gesenk 3 wird die Platine 1 zu einem U-Profil 7 vorgeformt . Wie in dem in der Fig . 3 gezeigten Ausschnitt zu erkennen ist , wird ein erster Schenkel 8 und ein zweiter Schenkel 9 sowie in dem ersten Schenkel ein Longitudinal flange leg section 10 from. As shown in FIG. 2, the cut board 1 is disposed between a punch 2 and a first die 3. The first die. 3 is composed of two side walls 4 and 6 and a bottom element 5 together. By retracting the punch 2 in the first die 3, the board 1 is preformed into a U-profile 7. As in the in Fig. 3, a first leg 8 and a second leg 9 and in the first leg is a
Längsflanschschenkelabschnitt 10 ausgeformt . In das so gebildete U-Profil 7 wird anschließend ein Stütz kern 11 eingebracht . Längsflanschschenkelabschnitt 10 formed. In the thus-formed U-profile 7, a support core 11 is then introduced.
In einem weiteren Verfahrensschritt wird mittels eines zweiten Gesenkes 12 das U-Profil zu einem O-Profil mit In a further method step, the U-profile is joined to an O-profile by means of a second die 12
Längs flansch geformt. Fig . 4 zeigt ein noch nicht vollständig zu einem O-Profil umgeformtes U-Profil 13. Zur Longitudinally shaped flange. Fig. FIG. 4 shows a U-profile 13 which has not yet been completely transformed into an O-profile
Veranschaulichung ist das zum Formen genutzt zweite Gesenk 12 in einer etwas angehobenen Position dargestellt . Mittels des zweiten Gesenks 12 wird das U-Profil 13 um den Stützkern 11 geformt. Die Form des Längsflanschschenke! abschnittes 10 bleibt im Wesentlichen erhalten . Im Bereich des Illustratively, the second die 12 used for molding is 12 shown in a slightly raised position. By means of the second die 12, the U-profile 13 is formed around the support core 11. The shape of the Längsflanschschenke! Section 10 is essentially preserved. In the area of
Längsflanschschenkelabschnittes 10 wird das Material Längsflanschschenkelabschnittes 10 is the material
gedoppelt . Durch weiteres Absenken des zweiten Gesenks 12 wird dieser Abschnitt des U-Profils 13 zusammengequetscht, so dass ein O-Profil mit einem gedoppelten Quetschflansch gebildet wird . Fig. 5 zeigt das entsprechende Hohlprofi 1 14 nach dem Laserverschweißen des durch die beiden Schenkel gebildeten Kantenstoßes und dem Ziehen des Stütz kernes 11. Längs des gekrümmten Hohlprofils 14 ist ein gedoppelter Längsflansch 15 ausgebildet, mit dem weitere Bauelemente an dem Hohlprofil 14 angebracht werden können . doubled. By further lowering the second die 12, this portion of the U-profile 13 is squeezed together, so that an O-profile is formed with a doubled squeeze flange. Fig. 5 shows the corresponding hollow profile 1 14 after the laser welding of the edge joint formed by the two legs and pulling the support core 11. Longitudinal of the curved hollow section 14 is a doubled longitudinal flange 15 is formed, can be attached to the other components of the hollow section 14 ,
Fig . 6 zeigt stark vereinfacht die beim Herstellen des Fig. 6 shows greatly simplifies the manufacture of the
Hohlprofils durchlaufenen Verfahrensschritte, in dem jeweils die resultierenden Querschnitts formen gezeigt werden . Hollow profiles traversed process steps, in each of which the resulting cross-sectional shapes are shown.
Ausgehend von einer Platine 16 wird zunächst ein U-Profil 17 mit einem ersten Schenkel 18 und einem zweiten Schenkel 19 vorgeformt . Dabei wird in dem ersten Schenkel 18 ein Starting from a board 16, a U-profile 17 is first preformed with a first leg 18 and a second leg 19. In this case, in the first leg 18 a
Längs flanschschenkelabschnitt 20 ausgeformt . Anschließend wird das U-Profil 17 zu einem O-Profil 21 geformt . Der Longitudinal flange leg portion 20 formed. Subsequently, the U-profile 17 is formed into an O-profile 21. Of the
Längs flanschschenkelabschnitt 20 wird dabei im Wesentlichen formwahrend gedoppelt und zu einem Längsflansch 22 Longitudinal flange leg portion 20 is substantially formwahrend doubled and to a longitudinal flange 22nd
gequetscht . Der Längsflansch 22 hat daher eine besonders gute Maßhaltigkeit und aufgrund der Dopplung eine enorme squeezed. The longitudinal flange 22 therefore has a particularly good dimensional stability and due to the doubling a tremendous
Festigkeit . Der Längsflansch 22 kann dann sehr gut zur Strength. The longitudinal flange 22 can then very well for
Befestigung des Hohlprofils oder zur Befestigung anderer Komponenten an dem Hohlprofil genutzt werden . Schließlich wird der Kantenstoß 23 durch Laserschweißen zumindest teilweise geschlossen, so dass das Hohlprofil eine sehr hohe Steifigkeit erhält . Bevorzugt wird, wie in dem Attachment of the hollow profile or for fastening other components can be used on the hollow profile. Finally, the edge impact 23 is at least partially closed by laser welding, so that the hollow profile has a very high Stiffness receives. Preference is given, as in the
Ausführungsbeispiel beschrieben, ein Stütz kern verwendet . Dieser findet Anwendung bei komplex zu formenden Embodiment described, a support core used. This applies to complex shapes
Hohlprofilen . Bei einfachen Geometrien kann durchaus auf ein Stützkern verzichtet werden . Hollow profiles. For simple geometries, it is quite possible to dispense with a support core.
Fig. 7 zeigt eine weitere zugeschnittene Platine 24 zur Fig. 7 shows a further cut board 24 for
Herstellung' eines Hohlprofils . Diese wird zwischen einem Stempel 25 und einem ersten Gesenk 26, wie in der Fig. 8 veranschaulicht , angeordnet . Der Stempel 25 weist dabei einen in Einfahrrichtung R vorstehend positionierten TeilStempel 27 auf . Dem TeiIstempel 27 ist eine verschiebbare Seitenwand 28 des ersten Gesenks 26 zugeordnet, die ebenfalls vorstehend positioniert ist . Zwischen dem Teilstempel 27 und der Preparation 'of a hollow profile. This is arranged between a punch 25 and a first die 26, as illustrated in FIG. 8. The punch 25 in this case has a partial punch 27 positioned in the retraction direction R above. The TeiIstempel 27 is associated with a displaceable side wall 28 of the first die 26, which is also positioned above. Between the partial stamp 27 and the
Seitenwand 28 wird beim Einfahren des Stempels 26 zunächst der Längs flanschschenkelabschnitt 29 in dem ersten Schenkel 30 des in der Fig . 9 dargestellten U-Profils 31 ausgeformt . Anschließend werden durch weiteres Einfahren des Stempels 25 in das erste Gesenk 26 der TeiIstempel 27 und die Seitenwand 28 in eine bündige Position verschoben und der erste Schenkel 30 und der zweite Schenkel 32 geformt . Dann wird ein Side wall 28 is when retracting the punch 26, first, the longitudinal flange leg portion 29 in the first leg 30 of FIG. 9 illustrated U-profile 31 formed. Subsequently, by further retraction of the punch 25 in the first die 26 of TeiIstempel 27 and the side wall 28 is moved to a flush position and the first leg 30 and second leg 32 formed. Then one will
gegliederter Stützkern 33 in das weiterhin im ersten Gesenk 26 angeordnete U-Profil 31 eingebracht . Das zweite Gesenk 34 setzt sich aus einem ersten, dem Längflanschschenkelabschnitt 29 zugeordneten Teilgesenk 35 und einem weiteren Teilgesenk 36 zusammen, Fig. 10. Zunächst wird gemäß Fig . 11 das articulated support core 33 in the further arranged in the first die 26 U-profile 31 introduced. The second die 34 is composed of a first part die 35 associated with the longitudinal flange leg portion 29 and a further part die 36, FIG. 10. First, according to FIG. 11 that
Teilgesenk 36 in Richtung des ersten Gesenks 26 bewegt . Dabei wird der dem Längsflanschschenkelabschnitt 29 abgewandte Teil des U-Profils umgeformt . Anschließend senkt sich auch das Teilgesenk 35 ab, so dass ein O-Profil gebildet wird . Nach dem Ziehen des Stützkernes 33 und dem Verschweißen des Partial die 36 moves in the direction of the first die 26. In this case, the part of the U-profile facing away from the longitudinal flange leg section 29 is deformed. Subsequently, the part of the die 35 lowers, so that an O-profile is formed. After pulling the support core 33 and the welding of the
Kantenstoßes erhält man das in der Fig . 12 dargestellte Hohlprofil 37 mit Längsflansch 38. Wie in Fig. 12 zu erkennen ist , kann das Hohlprofil 37 sehr komplex geformt , Edge impact is obtained in Fig. 12 shown Hollow profile 37 with longitudinal flange 38. As can be seen in FIG. 12, the hollow profile 37 can be shaped very complexly,
beispielsweise gekrümmt sein . Dennoch ermöglicht das for example, be curved. Nevertheless, that allows
erfindungsgemäße Verfahren die Herstellung eines Hohlprofils mit einem hoch maßhaltigen Längsflansch 38. Method according to the invention the production of a hollow profile with a longitudinal flange 38 of high dimensional accuracy.
In der Fig. 13 sind die einzelnen Prozess schritte des letzten Ausführungsbeispiels einer erfindungsgemäßen Hersteilung eines Hohlprofils anhand der einzelnen Querschnitts formen während der Prozessschritte veranschaulicht (ohne Stütz kern dargestellt ) . Zunächst wird die Platine 39 zu einem U-Profil 40 mit einem ersten Schenkel 41 und einem zweiten Schenkel 42 vorgeformt . Dabei wird in dem ersten Schenkel 41 ein In Fig. 13, the individual process steps of the last embodiment of a Hersteilung invention of a hollow profile based on the individual cross-sectional shapes during the process steps illustrated (core without support shown). First, the board 39 is preformed into a U-profile 40 having a first leg 41 and a second leg 42. In this case, in the first leg 41 a
Längstlanschschenkelabschnitt 43 ausgebildet . Das U-Profil 40 wird dann über ein Zwischenprofil 44 zu einem O-Profil 45 geformt und der Kantenstoß 46 verschweißt . Die den Hohlraum umschließende Kontur bildet zusammen mit dem Längsflansch 47 dabei eine an die Ziffer "6" erinnernde Form. Längstlanschschenkelabschnitt 43 formed. The U-profile 40 is then formed via an intermediate profile 44 to an O-profile 45 and the edge joint 46 welded. The contour enclosing the cavity forms, together with the longitudinal flange 47, a shape reminiscent of the numeral "6".

Claims

Patentansprüche claims
Verfahren zur Herstellung von Hohlprofilen mit einem Längsflansch, wobei durch Einfahren eines Stempels (2, 25 ) in ein erstes Gesenk ( 3 , 26) eine zwischen dem A method for producing hollow profiles with a longitudinal flange, wherein by inserting a punch (2, 25) in a first die (3, 26) one between the
Stempel (2 ) und dem ersten Gesenk (3, 26) angeordnete Platine ( 1 , 24 ) zu einem U-Profil (7, 31 ) mit einem ersten Schenkel ( 8 , 30 ) und einem zweiten Schenkel (9, 32 ) vorgeformt wird und wobei mit einem zweiten Gesenk (12, 34) das U-Profil (7, 31) zu einem O-Prof il (14, 37) mit einem Längsflansch ( 15 , 38 ) geformt wird, Stamp (2) and the first die (3, 26) arranged board (1, 24) to a U-profile (7, 31) with a first leg (8, 30) and a second leg (9, 32) is preformed and wherein with a second die (12, 34) the U-profile (7, 31) is formed into an O-profile (14, 37) with a longitudinal flange (15, 38),
d a d u r c h g e k e n n z e i c h n e t, d a s s beim Vorformen der Platine (1, 24 ) zu dem U-Profil (7, 31 ) in zumindest dem ersten Schenkel (8, 30 ) ein d a d u r c h e k e n e, when the preforming of the board (1, 24) to the U-profile (7, 31) in at least the first leg (8, 30)
Längsflanschschenkelabschnitt ( 10 , 29) ausgeformt wird und der Längsflanschschenkelabschnitt ( 10 , 29 ) während des Formens des U-Profils (7, 31 ) zu einem O-Profil (14, 37 ) im Wesentlichen formwahrend zu einem Teil des Längsflanschschenkelabschnitt (10, 29) is formed and the Längsflanschschenkelabschnitt (10, 29) during the molding of the U-profile (7, 31) to an O-profile (14, 37) substantially formwahrend to a part of the
Längsflansches (15, 38 ) ausgebildet wird . Longitudinal flange (15, 38) is formed.
Verfahren nach Anspruch 1 , Method according to claim 1,
d a d u r c h g e k e n n z e i c h n e t, d a s s zu Beginn des Vorformens mittels eines in Einfahrriehtung vorstehend positionierten , verschiebbaren Teilstempelsat the beginning of preforming, by means of a displaceable partial punch positioned at the top in running-in direction
(27 ) des Stempels (25) und einer entgegen der (27) of the punch (25) and one opposite
Einfahrriehtung vorstehend pos itionierten , verschiebbaren Seitenwand (28 ) des ersten Gesenks (26) der Entrance direction above pos itionierten, sliding side wall (28) of the first die (26) of the
Längsflanschschenkelabschnitt (29) ausgeformt wird, durch weiteres Einfahren des Stempels (25) in das erste GesenkLängsflanschschenkelabschnitt (29) is formed by further retraction of the punch (25) in the first die
(26) der Teilstempel (27 ) und die Seitenwand (28 ) jeweils von der vorstehenden Position in eine bündige Pos ition verschoben werden und die Platine (24) zu dem U-Profil ( 31 ) vorgeformt wird . (26) the partial punch (27) and the side wall (28) in each case from the projecting position into a flush Pos ition be moved and the board (24) is preformed to the U-profile (31).
3. Verfahren nach einem der Ansprüche 1 oder 2, 3. The method according to any one of claims 1 or 2,
d a d u r c h g e k e n n z e i c h n e t, d a s s ein erstes Gesenk (26) mit mindestens einer ersten verschiebbaren Seitenwand ( 28 ) verwendet wird und die erste Seitenwand beim Formen des U-Profils ( 31 ) zu dem O-Profil (37 ) mit Längs flansch ( 38 ) mittels des zweiten Gesenks (34) in Einfahrrichtung verschoben wird .  characterized in that a first die (26) having at least a first displaceable side wall (28) is used and the first side wall when forming the U-profile (31) to the O-profile (37) with a longitudinal flange (38) by means of the second Gesenks (34) is moved in the retraction direction.
4. Verfahren nach einem der Ansprüche 1 bis 3, 4. The method according to any one of claims 1 to 3,
d a d u r c h g e k e n n z e i c h n e t, d a s s ein zweites Gesenk ( 34 ) verwendet wird, welches ein erstes , dem Längsflanschschenkelabschnitt (29)  a second die (34) is used which has a first, longitudinal flange leg portion (29).
zugeordnetes Teilgesenk ( 35 ) und mindestens ein weiteres Teilgesenk (36) umfasst , und das U-Profil ( 31 ) zu dem O-Profil ( 37 ) geformt wird, indem das weitere Teilgesenk (36) vor dem ersten Teilgesenk (35) abgesenkt wird .  associated sub-die (35) and at least one further sub-die (36), and the U-profile (31) is formed to the O-profile (37) by the further part of the die (36) in front of the first part of the die (35) is lowered ,
5. Verfahren nach einem der Ansprüche 1 bis 4 , 5. The method according to any one of claims 1 to 4,
d a d u r c h g e k e n n z e i c h n e t, d a s s das U-Profil (7) zu einem O-Profil ( 14 ) mit einem gedoppelten Längsflansch ( 15 ) ausgebildet wird .  That is, the U-profile (7) is formed into an O-profile (14) with a doubled longitudinal flange (15).
6. Verfahren nach einem der Ansprüche 1 bis 5, 6. The method according to any one of claims 1 to 5,
d a d u r c h g e k e n n z e i c h n e t, d a s s vor dem Formens des U-Profils (7, 31 ) zu dem O-Profil (14, 37) mit Längsflansch (15, 38) ein Stütz kern (11, 33 ) , insbesondere ein gegliederter Stützkern, in das U- Profil eingebracht wird. characterized in that before forming the U-profile (7, 31) to the O-profile (14, 37) with a longitudinal flange (15, 38) a support core (11, 33), in particular an articulated support core, in the U Profile is introduced.
7. Verfahren nach einem der Ansprüche 1 bis 6, 7. The method according to any one of claims 1 to 6,
d a d u r c h g e k e n n z e i c h n e t, d a s s durch das Formen des U-Profils ( 7 , 31) zu dem O-Profil (14, 37) mit Längsflansch (15, 38) ein Kantenstoß (23) gebildet wird und das O-Profil (14, 37 ) entlang des Kantenstoßes (23) zumindest teilweise, insbesondere durch Laserschweißen, stoffschlüssig geschlossen wird. 8. Verfahren nach Anspruch 7 ,  characterized in that by forming the U-profile (7, 31) to the O-profile (14, 37) with longitudinal flange (15, 38) an edge joint (23) is formed and the O-profile (14, 37) along the edge joint (23) is at least partially, in particular by laser welding, materially closed. 8. The method according to claim 7,
d a d u r c h g e k e n n z e i c h n e t, d a s s der Stütz kern ( 11 , 33 ) vor oder nach dem Stoffschlüssigen d a d u r c h g e k e n e z e i c h n e t, d a s s of the support core (11, 33) before or after the cohesive
Schließen gezogen wird. 9. Verfahren nach einem der Ansprüche 1 bis 8 , Close is pulled. 9. The method according to any one of claims 1 to 8,
d a d u r c h g e k e n n z e i c h n e t, d a s s das Hohlprofil ( 14 , 37 ) aus einer monolitischen Platine, einem Tailored Blank oder einem Patchwork Blank gefertigt wird .  The hollow section (14, 37) is made of a monolithic board, a tailored blank or a patchwork blank.
EP11723298.3A 2010-05-14 2011-05-04 Method for producing hollow profiles having a longitudinal flange Not-in-force EP2569113B1 (en)

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WO2011141336A1 (en) 2011-11-17
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DE102010016960A1 (en) 2011-11-17
US20130091919A1 (en) 2013-04-18
CN102947021A (en) 2013-02-27
US8505352B2 (en) 2013-08-13
KR101810109B1 (en) 2017-12-18
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JP2013526412A (en) 2013-06-24
KR20130080015A (en) 2013-07-11

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