EP1954420B1 - Procede et dispositif de moulage sans noyau de profiles creux - Google Patents

Procede et dispositif de moulage sans noyau de profiles creux Download PDF

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Publication number
EP1954420B1
EP1954420B1 EP06819548A EP06819548A EP1954420B1 EP 1954420 B1 EP1954420 B1 EP 1954420B1 EP 06819548 A EP06819548 A EP 06819548A EP 06819548 A EP06819548 A EP 06819548A EP 1954420 B1 EP1954420 B1 EP 1954420B1
Authority
EP
European Patent Office
Prior art keywords
die
halves
production
hollow section
blank
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 - Fee Related
Application number
EP06819548A
Other languages
German (de)
English (en)
Other versions
EP1954420A1 (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
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes 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 OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes 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, wherein the deformation of the board is carried out with coreless die halves, as well as an apparatus for producing 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
  • 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 whereby the board is set in the circumferential direction under pressure upon continuation of the closing movement of the die-half molds and applies with yielding to the mold halves.
  • 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 in a simple manner that the slot formed by the opposite edges of the board has a substantially constant width.
  • 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 produced by the forming process.
  • "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 curling device which, as already stated in the introduction, from the German patent application DE 198 27 798 A1 can be easily used using a coreless die and preferably at the same time allows for direct longitudinal seam welding of the profile. For carrying out the method according to the invention therefore relatively low investment costs are required.
  • 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.
  • means for carrying out a longitudinal seam welding are provided, which enable an integrated longitudinal seam welding after completion of the forming process.
  • Fig. 1a 1 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.
  • a projecting into the mold cavity 12 sword 8 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.
  • the Fig. 1b 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. However, it is conceivable, many developable in a plane profile shapes with the device according to the invention or with the produce process according to the invention.
  • 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.
  • the Fig. 2a) to 2f show now in individual steps a simulation of a second embodiment of the inventive method for producing a hollow profile, again based on the production of a hollow section 5 in the form of a tube in a sectional view at different times.
  • 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.
  • the board 5 needs between the forming steps, shown in Fig. 2b ) and 2e ), no additional guidance, for example, by an internal die core or Gesenkformspalte or a firm clamping to ensure a reliable process forming the desired hollow section 5.
  • no additional guidance for example, by an internal die core or Gesenkformspalte or a firm clamping to ensure a reliable process forming the desired hollow section 5.
  • the cross-sectional shape of a slotted hollow profile 5 produced according to the second exemplary embodiment just described shows the Fig. 2f ) after molding from the device according to the invention 1.
  • the slot 15 of the hollow profile can be seen.
  • the fact that the Auskalibritation can already be performed within the device 1, the hollow profile produced is very accurate and can be particularly well welded longitudinally.
  • the method according to the invention 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)

Claims (14)

  1. Procédé de fabrication d'un profilé creux à partir d'une platine (5), dans lequel la platine (5) est insérée entre deux demi-moules d'estampe (3, 4) présentant la forme profilée souhaitée et déplaçables l'un par rapport à l'autre et, par un mouvement de fermeture des demi-moules d'estampe (3, 4), la platine (5) est déformée pour donner un profilé creux fendu, ladite déformation de la platine (5) étant assurée par des demi-moules d'estampe (3, 4) sans noyau, caractérisé en ce que un glissement en avant des arêtes (6, 7) de la platine (5) est empêché pendant le mouvement de fermeture de l'estampe destiné à former un profilé creux fendu, la platine (5) étant placée sous pression dans la direction périphérique lorsque le mouvement de fermeture des demi-moules d'estampe est poursuivi et s'appliquant en fléchissant sur les demi-moules d'estampe (3, 4).
  2. Procédé de fabrication d'un profilé creux selon la revendication 1, caractérisé en ce que l'on utilise au moins une lame de pliage (8) pénétrant dans l'espace creux de moule (12) sans noyau pour empêcher le glissement en avant des arêtes (6, 7) de la platine (5).
  3. Procédé de fabrication d'un profilé creux selon la revendication 1 ou 2, caractérisé en ce que l'on utilise une lame de pliage (8) aménagée entre les demi-moules d'estampe (3, 4) ou dans un demi-moule d'estampe (3, 4).
  4. Procédé de fabrication d'un profilé creux selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le profilé creux est calibré pendant l'opération de fermeture des demi-moules d'estampe (3, 4).
  5. Procédé de fabrication d'un profilé creux selon la revendication 4, caractérisé en ce que le calibrage est réalisé sans lame de pliage (8).
  6. Procédé de fabrication d'un profilé creux selon l'une quelconque des revendications 1 à 5, caractérisé en ce que les arêtes (6, 7) de la platine (5) sont préalablement repliées dans la direction de déformation.
  7. Procédé de fabrication d'un profilé creux selon l'une quelconque des revendications 1 à 6, caractérisé en ce que la platine (5) est protégée contre un déplacement dans la direction de l'axe de pliage (14).
  8. Procédé de fabrication d'un profilé creux selon la revendication 3, caractérisé en ce que le profilé creux est soumis à une soudure longitudinale après enlèvement de la lame de pliage (8), en particulier dans le même dispositif.
  9. Procédé de fabrication d'un profilé creux selon l'une quelconque des revendications 1 à 8, caractérisé en ce que l'on fabrique des "tubes coupés sur mesure".
  10. Procédé de fabrication d'un profilé creux selon l'une quelconque des revendications 1 à 9, caractérisé en ce que l'on utilise une presse à emboutir, une presse à plier ou un dispositif à enrouler.
  11. Dispositif de fabrication de profilés creux, en particulier pour réaliser un procédé selon les revendications 1 à 10, qui présente deux demi-moules d'estampe (3, 4) aménagés de manière à pouvoir se déplacer l'un par rapport à l'autre et éventuellement une plaque de base (2), les demi-moules d'estampe (3, 4) présentant la forme profilée souhaitée, caractérisé en ce que les demi-moules d'estampe (3, 4) sont sans noyau et il est prévu des moyens (8) qui permettent d'empêcher un glissement en avant des arêtes (6, 7) de la platine lors de la fermeture des demi-moules d'estampe (3, 4) dans le but de former un profilé creux fendu (5), la platine (5) étant placée sous pression dans la direction périphérique lorsque le mouvement de fermeture des demi-moules d'estampe (3, 4) en s'appliquant en fléchissant sur les demi-moules d'estampe (3, 4).
  12. Dispositif de fabrication de profilés creux selon la revendication 11, caractérisé en ce que il est prévu une lame de pliage (8) pénétrant dans l'espace creux de moule (12) sans noyau des demi-moules d'estampe (3, 4).
  13. Dispositif de fabrication de profilés creux selon la revendication 12, caractérisé en ce que la lame de pliage (8) est aménagée entre les demi-moules d'estampe (3, 4) ou dans l'un des demi-moules d'estampe (4).
  14. Dispositif de fabrication de profilés creux selon l'une quelconque des revendications 11 à 13, caractérisé en ce que l'on prévoit des moyens pour réaliser une soudure longitudinale.
EP06819548A 2005-11-30 2006-11-16 Procede et dispositif de moulage sans noyau de profiles creux Expired - Fee Related 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 EP1954420A1 (fr) 2008-08-13
EP1954420B1 true EP1954420B1 (fr) 2009-09-23

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Application Number Title Priority Date Filing Date
EP06819548A Expired - Fee Related 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)

Cited By (1)

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CN107427879A (zh) * 2015-02-25 2017-12-01 新日铁住金株式会社 包括具有狭缝的管状部的金属成形品及其制造方法、以及其所使用的制造装置和模具

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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
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
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US4031734A (en) * 1973-12-22 1977-06-28 Skf Industrial Trading And Development Company B.V. Method for the production of concentric machine elements
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DE19827798A1 (de) * 1998-06-23 1999-12-30 Thyssenkrupp Stahl Ag Verfahren und Vorrichtung zum Herstellen von längsnahtgeschweißten Rohren aus ebenen Blechzuschnitten

Cited By (1)

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Publication number Priority date Publication date Assignee Title
CN107427879A (zh) * 2015-02-25 2017-12-01 新日铁住金株式会社 包括具有狭缝的管状部的金属成形品及其制造方法、以及其所使用的制造装置和模具

Also Published As

Publication number Publication date
KR101260484B1 (ko) 2013-05-06
DE102005057424A1 (de) 2007-05-31
JP2009517222A (ja) 2009-04-30
US8959973B2 (en) 2015-02-24
EP1954420A1 (fr) 2008-08-13
US20090044394A1 (en) 2009-02-19
WO2007062991A1 (fr) 2007-06-07
DE502006004941D1 (de) 2009-11-05
KR20080073772A (ko) 2008-08-11
DE102005057424B4 (de) 2009-03-05

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