EP2875877A1 - Procédé de fabrication d'un profilé à section variable - Google Patents

Procédé de fabrication d'un profilé à section variable Download PDF

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Publication number
EP2875877A1
EP2875877A1 EP14003646.8A EP14003646A EP2875877A1 EP 2875877 A1 EP2875877 A1 EP 2875877A1 EP 14003646 A EP14003646 A EP 14003646A EP 2875877 A1 EP2875877 A1 EP 2875877A1
Authority
EP
European Patent Office
Prior art keywords
profile
profiling process
profiling
metal strip
semi
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
EP14003646.8A
Other languages
German (de)
English (en)
Other versions
EP2875877B1 (fr
Inventor
Kurt Aigner
Edwin Pfisterer
Martin Schreivogl
Harald Schachinger
Erich Spreitzer
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.)
WELSER PROFILE AUSTRIA GmbH
Original Assignee
WELSER PROFILE AUSTRIA GmbH
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Publication date
Application filed by WELSER PROFILE AUSTRIA GmbH filed Critical WELSER PROFILE AUSTRIA GmbH
Priority to EP17198635.9A priority Critical patent/EP3299090A1/fr
Publication of EP2875877A1 publication Critical patent/EP2875877A1/fr
Application granted granted Critical
Publication of EP2875877B1 publication Critical patent/EP2875877B1/fr
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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
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/06—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles
    • 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
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/06—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles
    • B21D5/08—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles making use of forming-rollers
    • B21D5/083—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles making use of forming-rollers for obtaining profiles with changing cross-sectional configuration
    • 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
    • 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
    • B21D22/20—Deep-drawing

Definitions

  • the present invention relates to a method for producing an elongated profile with a longitudinally varying cross section, in which an elongated metal strip having two strip edges, profiled in a first profiling process to a semi-finished profile and then in sections in a second profiling process is embossed such that at least two sections are offset in a direction perpendicular to the longitudinal extent of the semi-finished profile against each other.
  • profiles with varying cross section are required in various technical fields. For example, it is necessary to introduce a load into the profile at a certain point of the profile.
  • the cross section of the profile must at this point or in adjacent areas u. U. be enlarged so that the profile is structurally suitable for receiving the loads. It may also be necessary for the cross-section to be reduced at a certain point, for example in order to attach a specific attachment to the profile at this point, or to simply make room for other components which need not necessarily be connected to the profile. which would otherwise collide with the profile.
  • a prime example of the use of profiles with varying cross section is the automotive industry. It is not uncommon that certain carrier profiles for reasons of space at certain locations must have recesses, so that at this point, for example, cable guides or the like can be passed on the profile.
  • a method for producing an elongated profile with varying cross section is for example out EP 1547922 B1 known.
  • the method requires as starting material a sheet which has a special shape and is formed into a closed profile with a special roll profiling device in several steps.
  • the roll forming system must be equipped with specially adjustable rollers. With the method, only continuous cross-sectional changes can be realized, a more or less erratic change in the cross section can not be generated.
  • a method of the type mentioned is, for example EP 1344583 B1 known.
  • a profiled strip is first produced from a flat strip by rolling and then partially embossed in such a way that at least two sections in a direction perpendicular to the longitudinal extent of the band are offset from each other.
  • the profiled strip is trimmed after embossing such that the staggered portions have a different cross-section. The reason for the production of the different cross sections is thus the last process step of trimming.
  • the object of the present invention is to improve the method of the type mentioned and to avoid the problems mentioned.
  • an inventive solution to the problem if the metal strip is trimmed prior to the first profiling process such that it has a varying width in the longitudinal direction.
  • the inventive method has the advantage that the metal strip can be trimmed right at the beginning of the process so that a subsequent trimming is no longer required.
  • the trimming of the still unprofiled metal strip is particularly simple and can be done both in a stamping press as well as in a rolling mill. It can be provided that a plurality of sections are offset from each other at regular intervals. For example, the finished profile can thereby obtain a tinned shape.
  • the metal strip is trimmed in such a way that the strip edges run continuously straight after the second profiling process.
  • a U-profile with varying profile height can be created, wherein the band edges run on the opening side of the profile at a constant level.
  • Continuous straight strip edges may also be desired if the strip edges, for example, in a subsequent Continuous process further processed, for example, bent or rolled or welded together.
  • the trimming of the metal strip must correspond to the offset. At a point where the finished profile has more material, the trimmed metal strip must also have a greater width than elsewhere.
  • the metal strip is profiled in the first profiling process to form an open semi-finished profile.
  • An open semi-finished profile can be in the second profiling process at the desired locations against each other, without causing warping or wrinkling. Overall, this simplifies the further process.
  • the metal strip is profiled in the first profiling process to a U-profile.
  • the U-profile is embossed in the second profiling process such that the at least two mutually offset portions are offset in a direction perpendicular to the bottom of the U-profile against each other.
  • it is the bottom of the U-profile, which undergoes a level variation in the second profiling process and can be formed, for example staircase or crenellated.
  • the metal strip can be profiled in the first profiling process, for example, to a pure V-profile or a V-profile with additionally angled, mutually parallel leg ends. The bottom of the profile is in this case V-shaped.
  • the U-profile is reshaped into a hat profile after the second profiling process in a third profiling process by forming the legs of the U-profile or V Profiles are bent over in the area of their ends. If the trimming of the starting material, as described above, is carried out in such a way that the band edges run continuously straight after the second profiling process, this results in a hat profile with a constant width and varying profile height.
  • the semi-finished profile is formed after the second profiling process in a third profiling process to form a closed hollow profile.
  • the band edges are then welded or soldered together, in particular to the stability of the finished Continue to increase profile.
  • the final transformation to the closed hollow profile can be carried out, for example, in the cold rolling process.
  • the first profiling process is carried out in the cold rolling process.
  • this can be produced in a particularly simple manner in the first profiling a U-profile.
  • the first profiling process can preferably take place in several profiling steps.
  • it may be advantageous for the microstructure if a particularly pronounced change in shape, for example bending over 90 °, does not take place in one step but in several steps.
  • the first profiling process in any pressing device, for example in a hydraulic press.
  • several profiling steps can be provided. It is particularly advantageous if both the trimming step and the first profiling process are carried out in an intermittent method with a stamping press. This makes it possible to prefabricate even longer profiles quickly and inexpensively.
  • the second profiling process also takes place in a pressing device, and thus in an intermittent, non-continuous process.
  • this does not require a change or at least no further change to another profiling device.
  • a press in particular in a deep-drawing press, a particularly large and, if desired, step-shaped offset can be generated.
  • special rolls may preferably be provided with form-stamping elements on the outer circumference.
  • the inventive method is particularly suitable for producing metal profiles from a flat, elongated metal strip.
  • steel profiles are produced by the method according to the invention.
  • the length of the profiles can be determined already at the beginning of the process by cutting to length a correspondingly long sheet metal strip, or after the actual profile production process by cutting to length the finished profiles.
  • Fig. 1 shows an elongated profile 1, which has been prepared by the process according to the invention.
  • the profile is a so-called hat profile, which in the Has substantially the shape of a U-profile with outwardly bent legs 9.
  • the profile has a plurality of sections 4 and 5, which are offset from each other perpendicular to the longitudinal extent of the profile.
  • the staggered sections alternate each other in the longitudinal direction of the profile. More specifically, the portions 5 are offset outwardly from the intermediate portions 4 with respect to the bottom of the hat profile.
  • the sections 5 are thus crenellated outward.
  • the outwardly bent legs 9 are not affected by the offset.
  • the outer edges 3 of the hat profile are continuous straight.
  • the profile is made of a simple elongated metal band, which is preferably made of steel.
  • the elongated metal band is in Fig. 2 shown schematically and can be supplied to the device for producing the profile, for example via a reel, from which it is unrolled.
  • the metal strip can be cut to a certain length before the actual profile production.
  • the metal strip 2 is substantially straight, even the two band edges 3 of the metal strip are formed straight straight and parallel to each other.
  • the metal strip is first trimmed, in such a way that it subsequently has a width which varies in the longitudinal direction.
  • the trimming of the metal strip is preferably carried out in a conventional manner in a stamping press.
  • the trimmed metal strip 2 is in Fig. 3 shown. It can be seen that the two band edges 3 now no longer run straight. Rather, recesses 6 are formed in sections in the band edges, which in the region of the sections 4 to be created later in FIG Fig. 1 shown profile lie.
  • the shape of the transition between the recesses and the areas in which the band edge 3 remains un-trimmed depends largely on how exactly the transition between the staggered sections 4 and 5 should be designed.
  • the trimmed metal strip 2 is formed in the next step to a simple U-profile.
  • the resulting U-profile 10 is in Fig. 4 displayed.
  • the U-profile has a continuous straight bottom 7, as well as two projecting at right angles from the ground leg 8.
  • the transformation to the U-profile is preferably carried out in the line in the cold rolling process and may include several forming steps. Especially If the metal strip has a very large material thickness, it is recommended that the legs 8 bend gradually.
  • the transformation to the U-profile can of course also be done by means of another suitable pressing device. For example, it is possible to transform metal strips with low material thickness in a deep-drawing press to the U-profile.
  • Fig. 1 shows staggered sections are generated.
  • This profiling process can be done in several profiling steps, which is particularly necessary if two sections of the profile are to be particularly strongly offset from each other.
  • the displacement preferably takes place in a deep-drawing press.
  • Fig. 5 shows the U-profile 10 after a first deep-drawing process, in which initially a slight offset between the sections 4 and 5 is generated.
  • the figure shows that the depth of the recesses 6 in the band edge 3 has already been reduced after the first deep-drawing operation.
  • Fig. 6 the same U-profile is shown after another embossing process.
  • the offset between the two sections 4 and 5 now already corresponds to the desired offset.
  • the recesses 6 in the band edge 3 are now gone after the further offset of the profile.
  • the band edges 3 are now again straight straight, just as in the starting material, namely the metal strip 2 Fig. 2 ,
  • Fig. 7 shows a schematic representation of a pair of rollers 12/13 for generating the offset between the sections 4 and 5 in a rolling mill.
  • the illustration shows both the pair of rollers and the still undeformed U-profile 10 each in longitudinal section.
  • the offset in the profile interior sections 4 are generated by pressing the tread 7.
  • the upper roller 12 of the roller pair has on its outer periphery to an outwardly projecting punch 15.
  • the lower roller 13 has on the outer circumference via a recess 16, in which the punch 15 engages.
  • the U-profile is stabilized during the embossing process by a plurality of roller pairs, not shown.
  • the upper roller 12 of the pair of rollers shown has a stabilizing edge 14, with which the respective leg 8 of the U-profile is stabilized or held during the embossing process.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Metal Rolling (AREA)
EP14003646.8A 2013-11-05 2014-10-28 Procédé de fabrication d'un profilé à section variable Active EP2875877B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP17198635.9A EP3299090A1 (fr) 2013-11-05 2014-10-28 Dispositif de fabrication d'un profil à section transversale variable et profil à section transversale variable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102013018581.5A DE102013018581B4 (de) 2013-11-05 2013-11-05 Verfahren zur Herstellung eines Profils mit variierendem Querschnitt

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP17198635.9A Division-Into EP3299090A1 (fr) 2013-11-05 2014-10-28 Dispositif de fabrication d'un profil à section transversale variable et profil à section transversale variable
EP17198635.9A Division EP3299090A1 (fr) 2013-11-05 2014-10-28 Dispositif de fabrication d'un profil à section transversale variable et profil à section transversale variable

Publications (2)

Publication Number Publication Date
EP2875877A1 true EP2875877A1 (fr) 2015-05-27
EP2875877B1 EP2875877B1 (fr) 2018-04-25

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Application Number Title Priority Date Filing Date
EP14003646.8A Active EP2875877B1 (fr) 2013-11-05 2014-10-28 Procédé de fabrication d'un profilé à section variable
EP17198635.9A Withdrawn EP3299090A1 (fr) 2013-11-05 2014-10-28 Dispositif de fabrication d'un profil à section transversale variable et profil à section transversale variable

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP17198635.9A Withdrawn EP3299090A1 (fr) 2013-11-05 2014-10-28 Dispositif de fabrication d'un profil à section transversale variable et profil à section transversale variable

Country Status (4)

Country Link
EP (2) EP2875877B1 (fr)
DE (2) DE102013018581B4 (fr)
DK (1) DK2875877T3 (fr)
ES (1) ES2675794T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3034191B2 (fr) † 2014-12-19 2022-01-26 Voestalpine Krems GmbH Dispositif et procédé de fabrication d'un élément de profil longitudinal

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6233019A (ja) * 1985-08-02 1987-02-13 Nissan Motor Co Ltd プレス成形方法およびプレス成形装置
EP0363232A1 (fr) * 1988-08-29 1990-04-11 Tecphy Procédé de réalisation d'une pièce de structure à haute résistance mécanique
EP1344583A1 (fr) * 2002-03-12 2003-09-17 Kronenberg Profil GmbH Profilé, dispositif et procédé pour sa production et utilisation de ce profilé
EP1537922A1 (fr) * 2003-12-04 2005-06-08 HONDA MOTOR CO., Ltd. Fabrication de profilés avec une section variable dans la direction longitudinale
EP1997570A2 (fr) * 2007-05-31 2008-12-03 Nissan Motor Co., Ltd. Produit formé par presse et son procédé de fabrication
EP1547922B1 (fr) 2003-12-22 2009-02-25 Calzoni S.r.l. Dispositif optique indiquant l'angle de plané pour un aéronef

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10350776A1 (de) * 2003-10-30 2005-06-09 Daimlerchrysler Ag Bauteil mit in seinem Längsverlauf sich änderndem Profilquerschnitt
JP2008189126A (ja) * 2007-02-05 2008-08-21 Kobe Steel Ltd 構造用部材

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6233019A (ja) * 1985-08-02 1987-02-13 Nissan Motor Co Ltd プレス成形方法およびプレス成形装置
EP0363232A1 (fr) * 1988-08-29 1990-04-11 Tecphy Procédé de réalisation d'une pièce de structure à haute résistance mécanique
EP1344583A1 (fr) * 2002-03-12 2003-09-17 Kronenberg Profil GmbH Profilé, dispositif et procédé pour sa production et utilisation de ce profilé
EP1344583B1 (fr) 2002-03-12 2004-06-16 Kronenberg Profil GmbH Dispositif et procédé pour la production d'un profilé allongé
EP1537922A1 (fr) * 2003-12-04 2005-06-08 HONDA MOTOR CO., Ltd. Fabrication de profilés avec une section variable dans la direction longitudinale
EP1547922B1 (fr) 2003-12-22 2009-02-25 Calzoni S.r.l. Dispositif optique indiquant l'angle de plané pour un aéronef
EP1997570A2 (fr) * 2007-05-31 2008-12-03 Nissan Motor Co., Ltd. Produit formé par presse et son procédé de fabrication

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3034191B2 (fr) † 2014-12-19 2022-01-26 Voestalpine Krems GmbH Dispositif et procédé de fabrication d'un élément de profil longitudinal
US11351586B2 (en) 2014-12-19 2022-06-07 Voestalpine Krems Gmbh Apparatus and method for producing an elongated profiled part

Also Published As

Publication number Publication date
DE102013018581B4 (de) 2019-02-21
DE102013018581A1 (de) 2015-05-07
DK2875877T3 (en) 2018-07-16
EP2875877B1 (fr) 2018-04-25
DE202013012608U1 (de) 2017-11-21
EP3299090A1 (fr) 2018-03-28
ES2675794T3 (es) 2018-07-12

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