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EP1954420A1 - Procede et dispositif de moulage sans noyau de profiles creux - Google Patents

Procede et dispositif de moulage sans noyau de profiles creux

Info

Publication number
EP1954420A1
EP1954420A1 EP06819548A EP06819548A EP1954420A1 EP 1954420 A1 EP1954420 A1 EP 1954420A1 EP 06819548 A EP06819548 A EP 06819548A EP 06819548 A EP06819548 A EP 06819548A EP 1954420 A1 EP1954420 A1 EP 1954420A1
Authority
EP
European Patent Office
Prior art keywords
hollow profile
producing
board
hollow
sword
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
EP06819548A
Other languages
German (de)
English (en)
Other versions
EP1954420B1 (fr
Inventor
Torsten BRÖSSKE
Michael BRÜGGENBROCK
Thomas Flehmig
Mohamed Tohfa
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 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 AG filed Critical ThyssenKrupp Steel AG
Publication of EP1954420A1 publication Critical patent/EP1954420A1/fr
Application granted granted Critical
Publication of EP1954420B1 publication Critical patent/EP1954420B1/fr
Ceased 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
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/08—Making tubes with welded or soldered seams
    • B21C37/0815—Making tubes with welded or soldered seams without continuous longitudinal movement of the sheet during the bending operation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/08—Making tubes with welded or soldered seams
    • 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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49805—Shaping by direct application of fluent pressure

Definitions

  • the invention relates to a method for producing a hollow profile from a board, in which the board between two the desired profile shape and having relatively movable die halves is inserted and by a closing movement of the die halves the board is formed into a slotted hollow profile and a device for the production of Hollow profiles, which has two relatively mutually displaceable Gesenkformh crawln and optionally a base plate, wherein the Gesenkformh crawln have the desired profile shape of the hollow profile to be formed.
  • a mold having splitting tool ie a tool with an inner mandrel or inner mandrel halves
  • a mold having splitting tool ie a tool with an inner mandrel or inner mandrel halves
  • German Patent DE 966 111 discloses a device for bending metal strips to pipes of large diameter known, which consists of two mutually perpendicular coreless press jaws with semicircular cross-section, in the starting position with its lower edges, the longitudinal sides of the metal strip on its whole Embrace the length and, when merging, round the sheet metal strip into a tube. During this forming process, the metal strip is firmly clamped along the central longitudinal axis via a clamping device.
  • the known round bending of metal strip to pipes without internal mandrel required for welding butt joint of the opposite longitudinal edges of the formed sheet to achieve a constant weld is not guaranteed, so that a secure longitudinal seam welding of the hollow sections is not guaranteed.
  • the tubes thus produced must be subjected to an additional calibration.
  • the present invention thus has the object to provide a generic method and a generic device available, with which or with which low cost equipment with high process reliability hollow profiles can be made from a board, which are properly longitudinally welded, if necessary can.
  • the above-described object of a generic method for producing a hollow profile is achieved in that the forming is carried out with coreless die halves and a Vorang rejoin the edges of the board during the closing movement of the die to form a slotted hollow profile is prevented ,
  • Suitable board materials are all easily deformable metals, in particular steel or a steel alloy.
  • the board can freely deform in the interior of the die halves due to the omission of the mold gap, the risk of jamming of the board, for example due to surface defects of the die cores, eliminated and the process reliability for the production of the hollow profile significantly improved.
  • a sword or other means for preventing the Voran concernss the edges of the board a precise slot in the hollow profile between the bent edges of the board generated, which allows a process-reliable longitudinal seam welding.
  • At least one sword protruding into the coreless hollow space is used to prevent the edges of the board from advancing.
  • the edges of the board slide along the inner die half surface until they strike the sword projecting into the coreless mold cavity.
  • the sword then ensures, in the case of further closing of the tool, for the construction of the directed in the circumferential direction pressure within the board, which leads to the expansion of the circumference of the board and thus the exact application of the board to the inner mold cavity of the two die halves.
  • the sword can, for example, extend over the entire longitudinal axis of the later hollow profile. But it is also possible to use a sword, which extends only in some areas in the mold cavity.
  • a sword arranged between the die halves or in a die half is used. While the sword disposed between the die halves allows it to be easily removed after forming, a sword disposed in a die half opens up the use of die and bend presses without much rebuilding.
  • the hollow profile is calibrated out during the closing process of the die halves, i. the pressure in the circumferential direction increased so much that a dimensionally accurate deformation of the board is caused in accordance with the mold cavity formed by the die halves. Subsequent processing to achieve the dimensional accuracy is so far no longer necessary in these hollow sections.
  • the Auskalibrieren can, according to an embodiment of the method, also be performed without a sword. This exploits that the opposing edges of the board at the end of the forming process can be supported against each other, so as to build up pressure in the circumferential direction.
  • the forming process can be initiated in a defined manner so that the process reliability during forming is further increased.
  • the method according to the invention for producing a hollow profile is furthermore advantageously configured by securing the circuit board against displacement in the direction of the bending axis.
  • resulting in the direction of the bending axis forces for example, in the longitudinal direction of the hollow profile unevenly distributed forming forces due to different diameters along the longitudinal axis of the hollow profile produced, be collected and a displacement of the board during Umformformgangs be prevented.
  • a stop in the direction of the bending axis preventing stop can be used. A complex "clamping" of the board in one place is not necessary.
  • “Tailored tubes” are specially adapted to the load situation, closed hollow profiles, which have different material thicknesses and material grades.
  • the field of application of the "tailored tubes” is particularly in the automotive industry, to take into account the different loads in different areas of a space-frame structure and at the same time to ensure a minimum weight.
  • the method according to the invention can be carried out particularly economically by using a deep-drawing press, a press-bending press or a rolling-in device. Deep-drawing and die-bending presses can be easily adapted by incorporating the die-forming halves enabling the method, in order to enable the method according to the invention to be carried out.
  • a roll-in device which, as already stated in the introduction, is known from German Offenlegungsschrift DE 198 27 798 A1, can be used simply by using a coreless die and preferably at the same time allows direct longitudinal seam welding of the profile. For carrying out the method according to the invention therefore relatively low investment costs are required.
  • the above-described object is achieved by a generic device characterized in that the die halves are coreless and means are provided which prevent the closing of the die halves a Vorang consider the edges of the board to form a slotted hollow profile.
  • the advantages of the device according to the invention are that the inventive method can be carried out, which has a higher process reliability than the previously used method.
  • a corresponding apparatus requires correspondingly less investment cost than previously used Devices with complex inner spines or mandrel halves.
  • the formation of a slot with a constant width between the perpendicular to the direction of movement of the mold halves extending edges of the board is, according to a next advantageous embodiment of the device according to the invention, ensured in a simple manner that a protruding into the interior of the mold halves sword is provided.
  • the thickness of the sword in the area of the contact points of the perpendicular to the direction of movement of the mold halves extending edges of the board determines the thickness of the slot between these edges and ensures, at a perpendicular to the faces of the edges extending surface of the sword, to form an ideal butt joint for welding the both edges together.
  • the sword extends at least partially parallel to the bending axis of the hollow profile to be formed.
  • the sword is arranged between the die halves or in one of the die halves.
  • this embodiment of the device according to the invention makes it possible for deep drawing presses or die bending presses to be used to produce the hollow profiles.
  • a sword arranged between the die halves offers the possibility of easily removing it after forming and longitudinally welding the hollow profile without any further intermediate step.
  • means for carrying out a longitudinal seam welding are provided, which enable an integrated longitudinal seam welding after completion of the forming process.
  • Fig. Ia a schematic sectional view perpendicular to the bending axis, a first embodiment of a device according to the invention at two different times during the implementation of the method and method
  • Fig. 2a) to f) in a schematic sectional view of a simulation of a second embodiment of the manufacturing method according to the invention at six different times.
  • FIG. 1 a shows a schematic sectional view of a first exemplary embodiment of a device according to the invention for producing a hollow profile 1, which has a base plate 2 and two coreless die halves 3, 4 arranged displaceably relative to one another includes having the desired profile shape of the hollow profile to be produced.
  • the board 5 has in the deformation direction pre-bent edges 6, 7, which extend parallel to the bending axis 14.
  • Fig. Ia is still a projecting into the mold cavity 12 sword 8 shown, which is arranged between the two mold halves 3, 4.
  • the sword 8 runs parallel to the bending axis 14 over the entire length of the die.
  • a sword 8 which is interrupted several times or only protrudes into the mold cavity 12 at some points.
  • the die halves 3, 4 are moved towards one another according to the movement arrows 10, 11, so that the blank 5 arranged in the interior of the mold cavity 12 is shaped in accordance with the die halves.
  • Fig. Ib shows the embodiment of the device according to the invention after completion of the forming process.
  • the board is now to a still open hollow section 5, for example in the form of a tube, formed around the bending axis 14.
  • the sword 8 required for the forming process is pulled out by a movement of the sword holder 9 perpendicular to the longitudinal axis of the hollow section 5 from the hollow section 5 corresponding to the direction of movement 13, so that the hollow profile or tube 5 can now be welded longitudinally.
  • the embodiment shows a particularly simple hollow profile in the form of a tube.
  • an oval-conical profile can be produced with even proportions.
  • further reshaping of the edges and / or subsequent longitudinal seam welding for example using a laser, can follow.
  • this is also carried out integrated in the device according to the invention.
  • FIGS. 2a) to 2f) now show, in individual steps, a simulation of a second exemplary embodiment of the method according to the invention for producing a hollow profile, again based on the production of a hollow profile 5 in the form of a tube in a sectional view at different points in time.
  • the board 5 which preferably has pre-bent in the deformation direction, edges 6, 7, inserted into a device 1 according to the invention for the production of hollow profiles according to the second embodiment.
  • the device 1 comprises a swaging mold half 4, which has a sword 8 extending in the longitudinal direction of the entire swaging mold half 4 or parallel to the bending axis 14.
  • FIG. 2f The cross-sectional shape of a slotted hollow profile 5 produced according to the second exemplary embodiment just described is shown in FIG. 2f) after shaping out of the device 1 according to the invention.
  • the slot 15 of the hollow profile can be clearly seen.
  • the fact that the Auskalibri für can already be carried out within the device 1, the hollow profile produced is particularly accurate and can be welded very well slowly.
  • the inventive method and the device according to the invention are thus ideally suited for the production of "tailored tubes”.

Landscapes

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

Abstract

L'invention concerne un procédé de fabrication d'un profilé creux à partir d'une ébauche (5), selon lequel l'ébauche est placée entre deux moitiés de matrice (3, 4) qui peuvent être déplacées l'une par rapport à l'autre et présentent une forme de profilé souhaitée, un déplacement de fermeture des moitiés de matrice façonnant l'ébauche en un profilé creux qui présente une fente. L'invention concerne également un dispositif de fabrication de profilés creux qui présente deux moitiés de matrice de moulage disposées de manière à pouvoir être déplacées l'une par rapport à l'autre et éventuellement une plaque de base (2), les moitiés de matrice de moulage présentant la forme souhaitée du profilé creux à former. Le façonnage est réalisé à l'aide des moitiés de matrice de moulage sans noyau et le glissement vers l'avant des bords (6, 7) de l'ébauche lors du déplacement de fermeture de la matrice, en vue de la formation d'un profilé creux fendu, est rendu impossible.
EP06819548A 2005-11-30 2006-11-16 Procede et dispositif de moulage sans noyau de profiles creux Ceased EP1954420B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005057424A DE102005057424B4 (de) 2005-11-30 2005-11-30 Verfahren und Vorrichtung zum kernlosen Einformen von Hohlprofilen
PCT/EP2006/068571 WO2007062991A1 (fr) 2005-11-30 2006-11-16 Procede et dispositif de moulage sans noyau de profiles creux

Publications (2)

Publication Number Publication Date
EP1954420A1 true EP1954420A1 (fr) 2008-08-13
EP1954420B1 EP1954420B1 (fr) 2009-09-23

Family

ID=37682059

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06819548A Ceased EP1954420B1 (fr) 2005-11-30 2006-11-16 Procede et dispositif de moulage sans noyau de profiles creux

Country Status (6)

Country Link
US (1) US8959973B2 (fr)
EP (1) EP1954420B1 (fr)
JP (1) JP2009517222A (fr)
KR (1) KR101260484B1 (fr)
DE (2) DE102005057424B4 (fr)
WO (1) WO2007062991A1 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008056273B4 (de) * 2008-11-06 2015-05-28 Thyssenkrupp Steel Europe Ag Verfahren zur Herstellung eines geschlossenen Hohlprofils, nach diesem Verfahren hergestelltes geschlossenes Hohlprofil sowie Vorrichtung zur Herstellung eines derartigen geschlossenen Hohlprofils
DE102009017571B4 (de) * 2009-04-17 2016-09-22 Airbus Defence and Space GmbH Verfahren und Einrichtung zur Herstellung von Rohrbögen oder Rohrbogensegmenten durch Umformen, sowie entsprechend hergestellte Rohrbögen oder Rohrbogensegmente
DE102011051160A1 (de) * 2011-06-17 2012-12-20 Thyssenkrupp Steel Europe Ag Verfahren zur Herstellung geschlitzter Hohlprofile
CN102886429A (zh) * 2011-07-18 2013-01-23 湖北通达股份有限公司 无芯卷圆模
JP6456024B2 (ja) * 2014-01-31 2019-01-23 キヤノン株式会社 ローラ、カートリッジ、画像形成装置、及び筒状軸の製造方法
WO2016136259A1 (fr) * 2015-02-25 2016-09-01 新日鐵住金株式会社 Produit formé de métal comprenant une partie tubulaire présentant une fente et procédé de fabrication associé, et dispositif de fabrication et matrice utilisés pour celui-ci
GB201516884D0 (en) * 2015-09-23 2015-11-04 Racine Marc André Reinforced corrugated plastic sheets and products
US11267217B2 (en) * 2016-08-23 2022-03-08 Marc-Andre Racine System and method for bending a hollow core sheet using rods
CN107081363B (zh) * 2017-04-13 2018-11-16 西安飞机工业（集团）有限责任公司 一种含二次翻边孔的钣金件橡皮囊成形方法及组合模具
US11207722B2 (en) * 2018-09-10 2021-12-28 Amsted Rail Company, Inc. Systems and methods for manufacturing a ring from a metal sheet
CN109570342B (zh) * 2018-11-08 2020-07-28 东莞市翔龙泰达实业有限公司 一种具有缝隙宽厚比小于1的产品的冲压工艺

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US1872276A (en) * 1930-02-24 1932-08-16 Smith Corp A O Apparatus for and method of forming tubular blanks
DE966111C (de) * 1951-10-03 1957-07-11 Mannesmann Huettenwerke A G Vorrichtung zum Rundbiegen von Blechstreifen zu Rohren grossen Durchmessers
FR1254669A (fr) * 1960-04-20 1961-02-24 Méthode et appareil pour souder les tubes métalliques
US3285490A (en) * 1963-06-25 1966-11-15 Wallace Expanding Machines Apparatus for making tubular members
US4031734A (en) * 1973-12-22 1977-06-28 Skf Industrial Trading And Development Company B.V. Method for the production of concentric machine elements
JPS5747529A (en) * 1980-09-04 1982-03-18 Hitachi Metals Ltd Forming method of pipe of thin plate
DE19827798A1 (de) * 1998-06-23 1999-12-30 Thyssenkrupp Stahl Ag Verfahren und Vorrichtung zum Herstellen von längsnahtgeschweißten Rohren aus ebenen Blechzuschnitten

Non-Patent Citations (1)

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Title
See references of WO2007062991A1 *

Also Published As

Publication number Publication date
KR20080073772A (ko) 2008-08-11
US20090044394A1 (en) 2009-02-19
WO2007062991A1 (fr) 2007-06-07
KR101260484B1 (ko) 2013-05-06
US8959973B2 (en) 2015-02-24
DE502006004941D1 (de) 2009-11-05
DE102005057424A1 (de) 2007-05-31
EP1954420B1 (fr) 2009-09-23
DE102005057424B4 (de) 2009-03-05
JP2009517222A (ja) 2009-04-30

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