EP1484123B1 - Procédé et dispositif pour fabriquer un profilé cintré - Google Patents

Procédé et dispositif pour fabriquer un profilé cintré Download PDF

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Publication number
EP1484123B1
EP1484123B1 EP04012657A EP04012657A EP1484123B1 EP 1484123 B1 EP1484123 B1 EP 1484123B1 EP 04012657 A EP04012657 A EP 04012657A EP 04012657 A EP04012657 A EP 04012657A EP 1484123 B1 EP1484123 B1 EP 1484123B1
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EP
European Patent Office
Prior art keywords
profile
bending
station
mandrel
rod
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP04012657A
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German (de)
English (en)
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EP1484123A1 (fr
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.)
Palima W Ludwig and Co
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Palima W Ludwig and Co
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Publication date
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Publication of EP1484123A1 publication Critical patent/EP1484123A1/fr
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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
    • B21D9/00—Bending tubes using mandrels or the like
    • B21D9/10—Bending tubes using mandrels or the like by passing between rollers
    • 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
    • B21D21/00—Combined processes according to methods covered by groups B21D1/00 - B21D19/00
    • 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

Definitions

  • the invention relates to a method and apparatus for producing bending profiles according to the preamble of the independent claims.
  • the prior art discloses separate, stand-alone devices and methods on the one hand for producing a bar profile from a base material (for example sheet metal material) and on the other hand for bending this bar profile.
  • a base material for example sheet metal material
  • the production of a bar profile is preferably accomplished by a roll-profiling method for the production of closed, partially open or open profiles of different cross-sectional design and wall thickness design of sheet metal strip, in particular of a so-called "coil", a very large supply reel.
  • the subsequently performed on a separate machine bending of the previously produced on the roll-profiling machine bar profile is carried out in particular by the 2- or 3-dimensional profile roll bending process.
  • this forming process is not suitable for forming a high strength material, such as spring steel, since this bending forming process with an inner and outer core causes the profile after deformation deformed back, as the decisive Auswalzvorgang to apply the necessary forming forces in the structure of the material to be formed does not apply. As a result, the bending accuracy and deformation rate in comparison to the device and method according to the invention is substantially lower.
  • WO 01/51228 A discloses a method and apparatus for producing a roll-bent bumper metal part in a continuous process, which feeds a sheet of a forming device and formed by appropriately arranged forming rollers in an open profile, wherein the profile is supported during the forming by a chain link mandrel , which has mirror-symmetrically arranged side parts and transforms the sheet into a semi-open profile.
  • This invention has the disadvantage that with this support due to the chain link mandrel closed profiles can not be reshaped.
  • No. 6,386,011 B1 discloses a device for producing a roll-bent semi-open profile in a continuous process, which feeds a metal sheet to a forming device and converts it into an open profile by means of appropriately arranged forming rolls, wherein the profile is supported by a chain link mandrel during forming and the sheet is closed a semi-open profile transforms.
  • This invention has the significant disadvantage that with this support due to the support during forming closed profiles can not be reshaped.
  • this forming technique also no high forming accuracies can be achieved.
  • No. 5,974,932 A discloses a device for producing a roll-bent profile in a continuous process, which feeds a metal sheet to a forming device and converts it into a profile by means of appropriately arranged forming rolls, wherein the profile is calibrated and guided in a calibrating station which is simultaneously designed as a punch ,
  • This invention has the disadvantage that here a deformation is not performed by Auswalzrollen and the profile during forming in the region of the bending zone has no mandrel shaft for support, which thus can occur thin-walled profiles, bumps or even buckling.
  • the invention is therefore based on the object to further develop a continuous process for producing and bending bar profiles of sheet material in a single device of the type mentioned.
  • An essential feature of this is that a method and an apparatus is used which combines the method for producing the bar profile and the method for bending the produced bar profile in a single roll-forming-bending machine (RFB), wherein the production of the bar profile Forming a metal strip has transverse to the conveying direction and the bending of the bar profile has a rolling in the conveying direction of the bar profile.
  • RTB roll-forming-bending machine
  • the advantage here is that the sheet metal profiles produced in a continuous flow process can be bent as continuously on one and the same device and in particular on a "flying Abtrennstrom" (sawing, cutting, shearing, etc.) without interruption (and thus without significant waste) to target -Mass be cut so that the finished manufactured and curved profiles can be made very quickly and therefore cost with a single device without intermediate storage and intermediate transport.
  • the ready-made bent parts thus produced are then preferably also passed on continuously via an automatic handling system.
  • the profiles can be either left or right, up or down bend.
  • the roll bending head is preceded by a bridge construction for receiving a movable mandrel station.
  • This can be operated motor-driven (CNC controlled) or manually over the entire bridge length.
  • the mandrel station has the task over a mandrel bar the mandrel shank tool, which is positioned in the roll bending head, exactly on the bend line to hold position.
  • the flat bridge top with a variety of mounting options takes the necessary for profile production role stations with drive, welding and grinding device, Dornstangen Entryen u.a. on. Separate complete band end welding machine and double reel for the coil. Downstream of the roll bending head is a flying separation plant.
  • the bridge length depends on the number of roll stations required for profile production, with or without welding, grinding stations. etc. It can be made on a RFB system according to the invention, the most varied profiles in shape and size.
  • the so-called forming flower of a resulting profile determines the location position of the mandrel station. With a closed profile, the positioning is made at the place where the Umformblume just enough opening of the two plate ends of the sheet metal strip width allows that the mandrel bar holder with the mandrel bar in the closing gap cavity just fits into it.
  • the mandrel bar length is different.
  • Profile roll bending is ideally suited for free-form bending of rolled sheet metal profiles.
  • the combination of rolled profile production from the coil and profile roll bending enables the continuous production of curved thin to thin-walled sheet metal profiles in 2 and 3-dimensional design.
  • a "flying separation unit" with automatic handling system following the bending head secures the transfer process of the production.
  • Space Frame large side car part, which combines several conventional components
  • door frames window frames
  • chassis frame in the automotive field, and much more.
  • Steels, aluminum, titanium and magnesium and their alloys are preferably used as the material for the profiles, in particular in the motor vehicle and aviation industries.
  • the invention includes both completely rebuilt RFB plants that operate according to the RFB method, but also the conversion and The addition of existing systems for the production of profiles or systems for bending profiles, depending on the application.
  • Figure 1 shows a front view of the device according to the invention for producing bending profiles from a sheet-metal coil 1, which is wound here on each a reel 2.
  • the double reel system offers the advantage that only small changeover times from coil to coil are required or two sheets 3 can be processed into a profile 13.
  • the plate 3 is then removed from the reel 2 in the conveying direction 4 (here 0.6 to 1.6 m / s conveying speed) and initially fed to an optional strip end welding machine 5, to be subsequently introduced into the actual profile-forming device 6.
  • This profile-forming device 6 is known in principle from the prior art and includes a series of roller stations 7, which are connected in series in the conveying direction 4 of the sheet 3 in succession.
  • the welding station 8 Between the upstream front roller stations 7a and the downstream rear roller stations 7b are the welding station 8, the seam grinding station 9, the seam inspection station 10, the calibration station 11 and a station 12 for forming square and rectangular pipes (Turks head).
  • the bending head 14 Downstream of the last roller of the rear roller stations 7b, the bending head 14 is arranged, which is associated with a second main component of the inventive device for producing bending profiles, namely the bending device 18.
  • the bending head 14 enters the finished but still unbent profile 13 from the profile Forming station 6 a.
  • the cutting device 16 may be, for example, a flying saw, or a pair of scissors or a flame cutting station or laser cutting station or the like. It is important that the separating member 17 of the cutting device 16 can adapt to the curved profile 15, so that the separating member 17 must be movable, 2- or 3-dimensional.
  • the bending device 18 still belongs to the mandrel station 19, which is arranged displaceably in the direction of displacement 20 on the bridge 21, on which bridge 21 and the entire profile-forming station 6 is mounted.
  • the longitudinal displacement of the mandrel station 19 is provided only outside the profile production and allows easy and quick adaptation of the system to another profile.
  • the mandrel station 19 has the task of the mandrel on the, the mandrel shaft (for the Bending) opposite side to wear.
  • the mandrel station 19 is thus at a position just before closing the profile or before the completion of the profile.
  • a mandrel shank is only needed for closed and semi-closed profiles, but can be omitted or removed for open profiles.
  • FIG. 2 now shows an enlarged detail of the mandrel rod holder 19 with mandrel 22, wherein downstream of the further support of the mandrel 22, one or more mandrel rod guides 23 may be provided.
  • These mandrel guides 23 include at least two opposing revolving rollers 24, 25 which receive between them the sheet 3 to be deformed.
  • the one roller 24 is arranged on the mandrel rod 22 fixed or longitudinally displaceable, the other role fixed or longitudinally displaceable on the bridge 21.
  • Figure 3 shows the deformation of the sheet 3 to the profile 13 over numerous intermediate stages when passing through the roller stations 7 as viewed in the conveying direction 4 of the material 3, 13. Also, it can be seen that the outer roller 25 is wider than the inner roller 24 of the mandrel bar guide 23rd
  • FIG 4 shows an enlarged detail of the inventive device for producing bending profiles of Figure 1.
  • the bridge 21 is mounted on feet 26 and carries the roller stations 7.
  • the drive 27 for the roles of the roller stations 7 sits on a widening 21 a of the bridge 21 and is accomplished via the cardan shafts 28 which drive the rollers 29.
  • the forming flower 30 of the forming sheet 13 to be formed from the sheet metal 3 is shown in some steps.
  • the mandrel 22 can be seen which is connected via the mandrel rod holder 31 and the cantilever 32 again with the bridge 21.
  • the cantilever 32 can be replaced by a closed portal yoke 33, which is then connected to the bridge 21 on both sides of the profile.
  • cantilever 32 and portal yoke 33 can also be connected to the feet 26 or with any other stationary component of the bending device 18th
  • the longitudinal drive of the mandrel station 19 in the directions of movement 20 is performed by the drive 34.
  • Figure 5 shows an enlarged detail of a part of the bending head 14 of the bending device 18, which is already known per se from the prior art and goes back to the same applicant.
  • the manufactured profile 13 is introduced in the conveying direction 4 in the bending head 14, and exits downstream as a bending profile 15 to be fed to the cutting station 16.
  • the bending head 14 consists of support roller 35, roller 36, bending roller 37 and center roller 38, wherein only the middle roller 38 is driven, the other roles are driven only.
  • the actual deformation of the profile 15 takes place between the rolling roller 36 and the middle roller 38, between which the mandrel shaft 39 is in the bending line 43, ie in the force flow of the pressing force, which mandrel shaft 39 is located at the other end of the mandrel 22, opposite the mandrel station 19th ,
  • the neutral fiber is displaced from the middle of the profile 13 down to the middle roller 38, so that there is already a bending of the profile 13 alone, which only supported by the bending roller 37 is adjusted and adjusted to a defined value.
  • even very thin-walled profiles 13 can be bent with high precision and quality, without resulting in surface deformations (orange effect) or even tearing of the material.
  • the mandrel shaft 39 is preferably cooled by a micro-lubrication system 40 known from the prior art (FIG. 4), via the cantilever arm 32 or the portal 33 of the mandrel station 19 and via the mandrel rod support 31 and the mandrel rod 22 is supplied to the mandrel shaft 39.
  • a micro-lubrication system 40 known from the prior art (FIG. 4)
  • On Dornschaft 39 are then low-wear hardening or hardened removable plate to which the lubricant / coolant is passed.
  • the roller 36 and the cooperating central roller 38 are movable toward each other in the feed directions 41, for adjusting the force on the profile 13.
  • the support roller 35 and the bending roller 37 are also in the directions of feed 41 in the direction of the profile 13 and the bending profile 15th deliverable, but additionally still perpendicular to it in the delivery directions 42.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Claims (10)

  1. Procédé pour fabriquer des profilés cintrés (15) à partir d'une matière brute (3) dans une seule machine de roulage-formage-cintrage par roulage (RFB) en vue de fabriquer une barre profilée fermée, semi-ouverte ou ouverte, la barre profilée (13) étant obtenue par formage d'une tôle (3) transversalement par rapport au sens d'acheminement (4), et en vue de cintrer la barre profilée ainsi fabriquée, caractérisé en ce que le cintrage de la barre profilée se fait par laminage de la barre profilée (13) dans le sens d'acheminement (4).
  2. Procédé selon la revendication 1, caractérisé en ce que la tôle (3) est tout d'abord amenée dans un dispositif de formage (6) pour former la barre profilée (13), laquelle barre profilée (13) est ensuite amenée dans une station de cintrage (18) pourvue d'une tête de cintrage (14), pour former le profilé cintré (15).
  3. Procédé selon la revendication 2, caractérisé en ce que la barre profilée (13) est amenée en continu dans la machine de cintrage par roulage.
  4. Procédé selon la revendication 3, caractérisé en ce que dans la tête de cintrage (14), les profilés (13) sont cintrés en deux ou trois dimensions pour former les profilés cintrés (15).
  5. Procédé selon la revendication 4, caractérisé en ce que les pièces cintrées finies sont acheminées en continu grâce à un système de manutention automatique.
  6. Procédé pour fabriquer des profilés cintrés (15) à partir d'une matière brute (3) dans une seule machine de roulage-formage-cintrage par roulage (RFB), avec un dispositif de formage (6) pour fabriquer une barre profilée fermée, semi-ouverte ou ouverte, la barre profilée (13) étant obtenue par formage d'une tôle (3) transversalement par rapport au sens d'acheminement (4), et avec un dispositif pour le cintrage de la barre profilée ainsi fabriquée, caractérisé en ce que le dispositif pour le cintrage du profilé dans le sens longitudinal se compose d'une station de cintrage (18) avec une tête de cintrage (14) dont le rouleau de laminage (36) et le rouleau central entraîné (38) reçoivent entre eux le profilé à cintrer (13), et en ce que pour le cintrage de profilés semi-ouverts ou fermés, la station de cintrage (18) comprend une station de mandrinage (19) qui contient un porte-tige de mandrin (31) pour tenir une tige de mandrin (22) à une extrémité, l'autre extrémité de la tige de mandrin (22) portant un mandrin qui se trouve à l'intérieur du profilé à former (13), entre le rouleau de laminage (36) et le rouleau central (38), sur la ligne de cintrage (43).
  7. Procédé selon la revendication 6, caractérisé en ce que le dispositif de formage (6) a une série de stations de roulage (7a, 7b) et au moins une station de soudage (5, 8) et/ou une station de rectification (9) et/ou une station de contrôle (10) et/ou une station de calibrage (11) et/ou une station (12) pour former des profilés à section angulaire (13).
  8. Procédé selon la revendication 7, caractérisé en ce que la station de mandrinage (19) avec le porte-tige de mandrin (31) se trouve dans la zone de la fleur de formage (30) du profilé à former (13).
  9. Dispositif selon l'une des revendications 6 à 8, caractérisé en ce qu'une station de mise à longueur (16) pourvue d'un organe de séparation (17) pour séparer le profilé cintré fini (15) fait suite à la station de cintrage (18), en aval.
  10. Dispositif selon la revendication 9, caractérisé en ce que l'organe de séparation (17) est apte à être déplacé et/ou à pivoter sur deux ou trois axes, suivant la forme du profilé cintré (15).
EP04012657A 2003-06-02 2004-05-28 Procédé et dispositif pour fabriquer un profilé cintré Expired - Lifetime EP1484123B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10325036 2003-06-02
DE10325036A DE10325036A1 (de) 2003-06-02 2003-06-02 Verfahren und Vorrichtung zum Herstellen von Biegeprofilen

Publications (2)

Publication Number Publication Date
EP1484123A1 EP1484123A1 (fr) 2004-12-08
EP1484123B1 true EP1484123B1 (fr) 2006-11-29

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EP04012657A Expired - Lifetime EP1484123B1 (fr) 2003-06-02 2004-05-28 Procédé et dispositif pour fabriquer un profilé cintré

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EP (1) EP1484123B1 (fr)
AT (1) ATE346701T1 (fr)
DE (2) DE10325036A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009034589B3 (de) * 2009-07-24 2010-10-28 Wafios Ag Anordnung zum Biegen von rohrförmigen Werkstücken

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100393441C (zh) * 2006-08-08 2008-06-11 四川东风电机厂有限公司 大型椭圆形蜗壳壳节成形方法
CN100445550C (zh) * 2006-08-18 2008-12-24 四川东风电机厂有限公司 不等厚壳节蜗壳的制造工艺
DE102007034708B3 (de) * 2007-07-25 2009-04-09 Data M Software Gmbh Flexibler Niederhalter für eine Profilieranlage zum flexiblen Walzprofilieren von Kalt- oder Warmprofilen mit veränderlichem Querschnitt
DE202010001152U1 (de) * 2010-01-15 2011-05-26 Weber, Axel, 72138 Einrichtung zum Rollformprofilieren und Bombieren von Metallbandabschnitten
CN103302125B (zh) * 2013-06-07 2015-04-08 湖南大学 一种三维变弧度挤压型材在线弯曲成形装置
DE102019006796A1 (de) * 2019-09-29 2021-04-01 Fachhochschule Südwestfalen Verfahren zur Herstellung von gebogenen Profilen aus Blech, insbesondere Leichtbauprofilen, auf einer Biegemaschine sowie eine Werkzeuganordnung an einer Biegemaschine zur Herstellung von gebogenen Profilen

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5395036A (en) * 1990-03-26 1995-03-07 Shape Corporation Method of roll-forming an end automotive bumper
DE19637175C2 (de) * 1995-09-13 2001-12-06 Aisin Seiki Vorrichtung zum Schneiden eines gekrümmten, kontinuierlich zugeführten Werkstücks
WO2001051228A2 (fr) * 2000-01-14 2001-07-19 Cosma International, Inc. Ensemble de formation de deflexion et procede correspondant
US6386011B1 (en) * 2001-01-18 2002-05-14 Tishken Products Co. Adjustable cut off apparatus for elongated articles having varying degrees of sweep

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009034589B3 (de) * 2009-07-24 2010-10-28 Wafios Ag Anordnung zum Biegen von rohrförmigen Werkstücken
EP2281643A1 (fr) 2009-07-24 2011-02-09 WAFIOS Aktiengesellschaft Dispositif de pliage de pièces tubulaires
US8333094B2 (en) 2009-07-24 2012-12-18 Wafios Aktiengesellschaft Arrangement for bending tubular workpieces

Also Published As

Publication number Publication date
ATE346701T1 (de) 2006-12-15
DE502004002139D1 (de) 2007-01-11
DE10325036A1 (de) 2004-12-23
EP1484123A1 (fr) 2004-12-08

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