EP2830789A1 - Procédé et dispositif servant à la mise en forme incrémentielle par inflexion de tubes profilés, en particulier de tubes profilés présentant des sections transversales à axe longitudinal variable - Google Patents

Procédé et dispositif servant à la mise en forme incrémentielle par inflexion de tubes profilés, en particulier de tubes profilés présentant des sections transversales à axe longitudinal variable

Info

Publication number
EP2830789A1
EP2830789A1 EP12715578.6A EP12715578A EP2830789A1 EP 2830789 A1 EP2830789 A1 EP 2830789A1 EP 12715578 A EP12715578 A EP 12715578A EP 2830789 A1 EP2830789 A1 EP 2830789A1
Authority
EP
European Patent Office
Prior art keywords
tube
tool
tools
stations
station
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.)
Withdrawn
Application number
EP12715578.6A
Other languages
German (de)
English (en)
Inventor
Matthias Hermes
Christoph Becker
A. Erman Tekkaya
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.)
Technische Universitaet Dortmund
Original Assignee
Technische Universitaet Dortmund
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 Technische Universitaet Dortmund filed Critical Technische Universitaet Dortmund
Publication of EP2830789A1 publication Critical patent/EP2830789A1/fr
Withdrawn legal-status Critical Current

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
    • B21D31/00—Other methods for working sheet metal, metal tubes, metal profiles
    • B21D31/005—Incremental shaping or bending, e.g. stepwise moving a shaping tool along the surface of the workpiece
    • 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
    • B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
    • B21D11/08—Bending by altering the thickness of part of the cross-section of the work
    • 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
    • B21D15/00—Corrugating tubes
    • B21D15/02—Corrugating tubes longitudinally
    • 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
    • B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
    • 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
    • B21D7/00—Bending rods, profiles, or tubes
    • B21D7/08—Bending rods, profiles, or tubes by passing between rollers or through a curved die

Definitions

  • the invention relates to a method for incremental bending deformation of profile tubes, in particular of profile tubes with varying over the longitudinal axis cross-sections according to the preamble of claim 1 and a device suitable for carrying out the method according to the preamble of claim 16.
  • Curved profile-shaped structures are increasingly finding their way into the construction sector and the automotive industry.
  • the automotive industry is increasingly trying to reduce the weight of vehicles with a view to more efficient use of resources.
  • One possibility is the use of curved hollow structures.
  • Object of the present invention is therefore to further develop the manufacturing method according to DE 10 2010 025 593 A1 for profile tubes, in particular for profile tubes with varying over the longitudinal axis cross sections such that even complex, along the tube length bent tube cross sections in a process step and thus essential can be made more economical than conventional methods.
  • the invention relating to the method is based on a method for forming profile tubes, in particular of profile tubes with varying over the longitudinal cross-sections, in which a tube with an output Profiiquerrough by means of a feed device is passed at least once at a tool station with at least one tool the tool and the tube are arranged to be adjustable relative to one another in at least one degree of freedom and the tool locally locally increments the tube cross section during the relative movement between the tube and the tool.
  • a generic method is further developed according to the invention in that before or after the incremental deformation in the first tool station, the tube is guided at least once past at least one further tool station, whose forming effect on the tube also or exclusively a bending deformation of the tube along the longitudinal extent of the tube causes.
  • the incremental deformation in the first tool station is combined with a further bending transformation that can be carried out on the same machine and in the same operation, by which the tubular hollow part (hereinafter simply referred to as tube) is also used bending deformation is formed and the tube has been subjected to both an incremental deformation of the tube cross section and a bending deformation after passing through the entire operation.
  • tube tubular hollow part
  • several steps of forming can be combined in one machine, resulting in a cost and cycle time reduction.
  • the tube as a result of the desired conversion Forming is virtually finished from the forming machine and can therefore be produced inexpensively even in small quantities, since the mold-related tooling costs are minimal.
  • the tools of the at least two tool stations are constructed substantially similar and arranged substantially similar in the respective tool station. These are at two or more or even all used tool stations to tool stations with tools for performing the incremental deformation of the tube according to DE 10 2010 025 593 A1, which consist of a number relative to each other and the pipe adjustable individual tools that automatically and separately are movable relative to each other and locally transform the surface of the tube to be formed in the manner described in DE 10 2010 025 593 A1.
  • the tube is when passing through the tool station or tool stations by the action of the tools across the Feed direction deflected and thereby bending formed.
  • the tools form a kind of forming channel, so that the tube with its feed movements is locally incrementally deformed and bend-shaped by the tool stations.
  • the tube is formed by the tools in its cross-section incrementally and at the same time deflected from its actual direction of movement, that it can be selectively bent over.
  • the separate adjustability of the individual tools of the tool stations and the number and arrangement of the tool stations along the feed direction of the tube in this case also allows the most complex bending transformations.
  • only two such tool stations are connected in series, but if necessary several times with respective adjustment of the parameters of the incremental forming parameters and the bending deformation, which takes place via appropriate adjustment of the tools of the tool stations, for example reversing.
  • the tube in the respective first of the tool stations, the tube is predominantly incrementally reshaped by the tools acting there, whereas the tube in the second tool station passes through corresponding transverse displacement of the tools relative to the feed direction of the pipe still held in the first tool station and the feed device is deflected transversely from this feed direction and thereby bending reshaped and optionally further incrementally reshaped.
  • the functions of the individual tool stations can change.
  • the tube it is conceivable for the tube to be reversibly guided past the tool stations in successive passes and successively deformed and / or bend-formed by the position of at least one of the tools being changed more and more relative to the feed direction of the tube.
  • the bending deformation of the tube can be divided among these several tool stations by causing the tools of the tool stations each greater and greater transverse deflections of the pipe. Although this increases the technical equipment complexity, the throughput time through the device or the number of stitches can be reduced.
  • the deflection of the tools of each of the tool stations and the distance of the tool stations to each other in the feed direction of the tube are changed and controlled so that the passage of the tube through the tool stations the desired bending deformation of the tube is caused.
  • the control of the tools of the individual tool stations is carried out advantageously automated and possibly adaptive, so that simplest and without large conversions a variety of bending transformations and incremental transformations can be performed.
  • the tools of the at least two tool stations are constructed differently and act unevenly transforming the pipe.
  • the tools of at least one of the tool stations in the relative movement between pipe and tool, the tube only locally locally incremental transform, whereas the tools make at least one of the other tool stations exclusively a bending deformation.
  • one of the tools as described in DE 10 2010 025 593 A1 has a number of individually controllable forming tools, whereas the tool for pure bending deformation is formed from a known bending tool for pipes, as has long been the case on conventional pipe bending machines Use comes.
  • the tube is further deformed as a pre-formed semi-finished product, in particular as a pre-bent blank.
  • preformed semi-finished products for larger degrees of deformation, it may be useful, similar to the already in DE 10 2010 025th 593 A1 described for the cross-sectional shaping, preformed semi-finished products also with regard to the bending forming use.
  • pre-bent tubular semi-finished products can be used in order to more easily achieve the required degrees of deformation when passing through the device according to the invention.
  • the bending deformation of the tube by the position of the tools of the tool stations is multi-dimensional, especially in two spatial directions perpendicular to the feed direction of the tube.
  • the deflection of the tube as it passes through such tool stations can thus also allow skew bending transformations, which allow the most complex geometrical beamlines required by the market today.
  • both bends with small bending radii and bends with large bending radii in the manner described can be easily made.
  • the invention further relates to a device for forming profile tubes, in particular profile tubes with varying cross-sections over the longitudinal axis, in particular for carrying out the method according to claim 1, wherein the device comprises a clamping device for the incrementally reshaping tube and at least one tool station with at least one tool, the clamping device and thus the clamped tube and the tool station are arranged relative to each other displaceable and / or rotatable and a single or each tool in the tool station can perform at least one relative movement relative to the tool station, wherein the clamped tube is formed incrementally.
  • Such a generic device is further formed in accordance with the invention that the device before or after the passage of the first tool station has at least one further tool station with tools whose forming effect on the pipe or exclusively causes a bending deformation of the tube along the longitudinal extent of the tube.
  • the basic structure of such tool station has already been described in DE 10 2010 025 593 A1 and will not be explained further here.
  • both the adjustment of the tools relative to the tool station and the adjustment of the tool stations e.g. be understood in their distance from each other.
  • the adjustment may e.g. numerically controlled and thus very flexibly changeable and adaptable.
  • the tool station has a preferably closed receiving frame, relative to which the tools are arranged adjustable.
  • a receiving frame forms a compact unit and can be used in particular as stable storage of the individual tools and their drives.
  • the tools can be arranged in such a way on the receiving frame, preferably four tools crosswise to each other, that the tube can be formed from all sides and / or bending-transformed.
  • the tools are formed like a prick, and for example have a spherical or spherical machining section, which interacts with the tube in the incremental deformation and the bending deformation.
  • Such prick-like tools for example with crowned or spherical end regions, permit a substantial adaptation to cross-sectional shapes of the pipe to be produced, without the need for special tools in each case.
  • Such tool stations can for example be integrated in a conventional bending machine for pipes or adapted to a three-roll bending machine for pipes.
  • the tool station is built on a special machining center for pipes.
  • the tool stations in the feed direction of the tube staggered to each other are arranged adjustable, since this can easily be the bending radius of the tube can be influenced.
  • the distance between the tool stations e.g. the distance between the tool stations also be made correspondingly large.
  • a plurality of tool stations can also be arranged at a small distance from one another and, if necessary, combined together in a common forming head.
  • FIG. 1 shows a frame-like structure of a tool station according to the invention for incremental forming and bending forming with a receiving frame and four individually adjustable tools arranged in a crosswise direction
  • FIG. 2 shows a schematic representation of the use of the tool station according to FIG. 1 on a conventional bending machine with roll bending device arranged at the end;
  • FIGS. 3a-3c show different variants of the method for combining incremental shaping and bending deformation according to the method according to the invention
  • FIG. 4 shows a method variant for combining incremental deformation before bending deformation according to the method according to the invention
  • FIG. 5 shows a further variant of the method for combining bending deformation prior to an incremental deformation according to the method according to the invention
  • FIG. 6 shows a schematic illustration of a special machining center for combining incremental deformation and bending deformation
  • Figure 7 Combination of incremental forming and bending deformation according to the principle of the American bow.
  • FIG. 1 is a schematic representation of the frame-like structure of a tool station 1 according to the invention for the incremental forming and bending deformation with a receiving frame 5 and here as an example four crosswise arranged individually adjustable tools 3 to recognize the tools 3 on not recognizable drives in the adjustment 8 in the interior of the receiving frame 5 in or out of the interior of the receiving frame 5 can be moved out again.
  • This arrangement of the tools 3 on the receiving frame 5 shown in FIG. 1 is only a purely exemplary arrangement; also fewer or more than four tools 3 are arranged on the receiving frame 5, e.g. a larger number of tools 3 offset at uniform or non-uniform angles to each other in the circumferential direction and radially inwardly into the receiving frame 5 slidable tools.
  • the tools 3 are also indicated only schematically on the receiving frame 5 and form approximately stylet-like tools 3, which with e.g. semi-circular or otherwise rounded or bevelled working surfaces 12 act on the tube 2 to be deformed.
  • the number of processing surfaces 12 of the tools 3 thus forms a quasi a boundary of a passage zone for the tube 2, which is pushed in the feed direction 4 through the interior of the receiving frame 5 and thus formed by the tools 3 in an already known manner incrementally.
  • the adjustment of the tools 3 and thus the geometry of the boundary of the passage zone for the tube 2 can be numerically controlled and over the non-illustrated drives of the tools 3 are controlled, so that each tool 3 can be positioned at any position at any position within the passage zone of the receiving frame 5.
  • the design of the tool station 1 forms a very compact and space-saving, but at the same time easy to handle and controllable arrangement for the tools 3, which is also formed by the rigid support frame 5 very stable.
  • Such equipped with individual tools 3 receiving frame 5 can be seen as in Figure 2 integrated on a conventional bending machine 13 so that the receiving frame 5 provided with appropriate guides placed on the guides 15 of the machine bed 14 and controlled along these guides 15 can.
  • the tube 2 the end is held in a chuck or rotary transformer 17 of a machine inenkopfes 10, pushed through the receiving frame 5 with the tools 3 in the feed direction 4 and thereby deformed incrementally.
  • the basic idea is that individual or all such tool stations 1 and 6 not only perform an incremental deformation of the tube 2, but the tools 3 of each or all of the tool stations 1 and 6 to each other and arranged to the feed direction 4 of the tube 2 be that the tube 2 is urged out of its feed direction 4 during its movement through the successively arranged tools 3 of the tool stations 1 and 6 and the tube 2 is bent thereby.
  • the tube 2 has passed through such an array of tool stations 1 and 6 staggered one after another, e.g. changed the position of the tools 3 relative to the receiving frame 5 and a re-run of the already deformed in the first pass tube 2 are made.
  • This pass can e.g. also done reversing.
  • the tube 2 is again incrementally reshaped and / or bend formed, so that after a corresponding number of passes the tube 2 has reached its deformed cross-section 7 and its desired bending shape and can be removed.
  • such a combined incremental forming and / or bending deformation can be carried out with only two such identically constructed tool stations 1 and 6, which are consecutively passed in the feed direction 4 of the tube 2 and one of which. only the incremental forming and the other performs only the bending deformation, as indicated in Figure 2.
  • each of the two tool stations at each stitch their function by corresponding position of the tools 3 relative to the receiving frame 5 and the feed direction 4 of the tube 2 change.
  • the tube 2 is both incrementally deformed and bending formed by the tools 3 are set in the tool station 6 so that the tube 2 is also deflected from the feed direction 4.
  • such tool stations 1 and 6 configured with mounting frames 5 can also be used in combination with other tool stations 6 known per se, as can be seen, for example, as a rotary tension bending tool 6 in FIG. 2 or FIG. 3b or also as three-roller Bending tool as indicated schematically in Figure 6 or one of the many other known tube bending tools.
  • the tool station 6 with such a pure bending tool can then of course only perform a pure bending deformation, but combined with the one or more incremental transformations of the other tool stations 1 combined to form a total deformation of the tube 2.
  • a deflection roller 11 in a tool station 6 can be moved into the feed 4 of the pipe 2 after the passage of the pipe 2 through the tool station 1 in such a way that the pipe 2 is deflected laterally (in FIG is bent by it. Due to the more or less strong employment of the roller 1 to the feed path of the tube 2 so that the degree of bending deformation and thus the bending of the tube 2 is changed.
  • FIGS. 4 and 5 show a correspondingly modified embodiment of the device according to the invention in the form of a special machining center in which two guides 15 are arranged perpendicularly to one another on a plate-shaped machine table 16, on which a machine head 10 can be moved freely in the plane of the machine table 16 of the tube 3 can be arranged.
  • a first tool station 1 in the form of a receiving frame 5 with tools 3 can be seen, through which the tube 2 can be pushed through.
  • FIG. 7 shows a special type of bending in one of the already described tool stations 1, namely the bend in the form of the so-called American bow.
  • the tool station 1 when passing through the tube 2 by the tool station 1 essentially only the lower fibers (the inner fibers) of the tube 2 are influenced and shortened.
  • This so-called American bow can also be produced particularly easily with the aid of a tool station 1 designed according to the invention. Sac number list

Landscapes

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

Abstract

L'invention concerne un procédé servant à la mise en forme de tubes profilés (2), en particulier de tubes profilés (2) présentant des sections transversales à extension longitudinale variable. Selon ledit procédé, un tube (2) présentant une section transversale de sortie profilée est amené au moins une fois à passer devant une station d'outils (1) dotée d'au moins un outil (3) au moyen d'un dispositif d'avancement (14, 15). L'outil (3) et le tube (2) sont disposés de manière à pouvoir être déplacés l'un par rapport à l'autre selon au moins un degré de liberté; et l'outil (3) met en forme localement de manière incrémentielle la section transversale du tube lors du déplacement relatif entre le tube (2) et l'outil (3). Le tube (2) est dans le cas présent amené, avant ou après la mise en forme incrémentielle dans la première station d'outils (1), à passer au moins une fois devant au moins une autre station d'outils (6), dont l'action de mise en forme exercée sur le tube (2) entraîne également ou exclusivement une mise en forme par inflexion du tube (2) le long de l'extension longitudinale dudit tube (2). L'invention concerne par ailleurs un dispositif correspondant servant à la mise en œuvre dudit procédé.
EP12715578.6A 2012-03-25 2012-03-25 Procédé et dispositif servant à la mise en forme incrémentielle par inflexion de tubes profilés, en particulier de tubes profilés présentant des sections transversales à axe longitudinal variable Withdrawn EP2830789A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/DE2012/000327 WO2013143512A1 (fr) 2012-03-25 2012-03-25 Procédé et dispositif servant à la mise en forme incrémentielle par inflexion de tubes profilés, en particulier de tubes profilés présentant des sections transversales à axe longitudinal variable

Publications (1)

Publication Number Publication Date
EP2830789A1 true EP2830789A1 (fr) 2015-02-04

Family

ID=45991990

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12715578.6A Withdrawn EP2830789A1 (fr) 2012-03-25 2012-03-25 Procédé et dispositif servant à la mise en forme incrémentielle par inflexion de tubes profilés, en particulier de tubes profilés présentant des sections transversales à axe longitudinal variable

Country Status (2)

Country Link
EP (1) EP2830789A1 (fr)
WO (1) WO2013143512A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108080458A (zh) * 2017-12-13 2018-05-29 南京航空航天大学 一种三轴自由弯曲局部渐进成形装置及方法

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104722622B (zh) * 2015-01-29 2016-08-24 四川省宜宾市昌明机械有限公司 一种半圆管成形弯曲装置
CN107052110B (zh) * 2017-05-10 2018-11-09 南京航空航天大学 变截面三维复杂构件局部旋压及三维自由辊弯综合成形装置和方法
CN108394088B (zh) * 2018-04-23 2023-05-16 常州新创航空科技有限公司 一种旋转式模具及其成型方法
DE102018115052A1 (de) * 2018-06-22 2019-12-24 Salzgitter Hydroforming GmbH & Co. KG Verfahren zur Herstellung eines gebogenen, rohrförmigen Vorproduktes aus Metall für die Innenhochdruckumformung von Bauteilen und Werkzeug zur Herstellung eines solchen Vorproduktes
CN109909338B (zh) * 2019-02-26 2020-10-30 西北工业大学 一种用于管材旋压弯曲渐进成形工艺的弯曲机构
CN112570518B (zh) * 2019-09-30 2022-11-11 比亚迪股份有限公司 型材扭弯设备
CN114273430B (zh) * 2021-12-23 2022-10-04 南京航空航天大学 基于机器人的变径管制备弯曲一体化成形装置及方法
CN114798903B (zh) * 2022-06-29 2022-09-02 北京凯隆分析仪器有限公司 一种限流管制作装置及制作方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1033563C (zh) * 1992-02-12 1996-12-18 王明时 方形截面螺旋管一步成型模
US20070074556A1 (en) * 2005-10-04 2007-04-05 Shape Corporation Continuous process of roll-forming stamped sheet
DE102007043805A1 (de) * 2007-09-13 2009-03-19 Patentgesellschaft Maranatha Verfahren und Vorrichtung zum Biegen oder zum linearen Auswalzen von Profilen mit achslosen Minirollwalzkörpern
DE102010025593A1 (de) 2010-06-27 2011-12-29 Technische Universität Dortmund Verfahren und Vorrichtung zur inkrementellen Umformung von Profilrohren, insbesondere von Profilrohren mit über die Längsachse variierenden Querschnitten

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
None *
See also references of WO2013143512A1 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108080458A (zh) * 2017-12-13 2018-05-29 南京航空航天大学 一种三轴自由弯曲局部渐进成形装置及方法
CN108080458B (zh) * 2017-12-13 2019-11-29 南京航空航天大学 一种三轴自由弯曲局部渐进成形装置及方法

Also Published As

Publication number Publication date
WO2013143512A1 (fr) 2013-10-03

Similar Documents

Publication Publication Date Title
EP2830789A1 (fr) Procédé et dispositif servant à la mise en forme incrémentielle par inflexion de tubes profilés, en particulier de tubes profilés présentant des sections transversales à axe longitudinal variable
EP2529849B1 (fr) Dispositif et procédé de fabrication de tuyaux fendus à partir de plaques de tôle
EP1584383B1 (fr) Procédé et dispositif pour la fabrication de profilés à section variable dans la direction longitudinale
DE102008027807B4 (de) Verfahren zum Herstellen eines großen Stahlrohres
DE102005022052A1 (de) Verfahren und Vorrichtung zum Richten länglicher Werkstücke
EP2342029A2 (fr) Système pour le profilage à froid sur galets de profilés de section variable
DE102010025593A1 (de) Verfahren und Vorrichtung zur inkrementellen Umformung von Profilrohren, insbesondere von Profilrohren mit über die Längsachse variierenden Querschnitten
DE102009025988A1 (de) Vorrichtung und Verfahren zum Freiformbiegen von Profilen
DE102005057424A1 (de) Verfahren und Vorrichtung zum kernlosen Einformen von Hohlprofilen
EP3820631B1 (fr) Presse à former à jco à réglage élargi
DE102007018387B4 (de) Durchlaufschweißmaschine zum Verschweißen eines Rohrrohlings
DE2642743B2 (de) Vorrichtung zum Herstellen einer Kraftfahrzeug-Achse
DE102011053676A1 (de) Rohrbiegemaschine
WO2015144103A1 (fr) Procédé et dispositif de fabrication incrémentielle de fils, de tubes, de profilés ou similaires cintrés, à partir de matériaux métalliques en forme de barre
DE102005031437A1 (de) Vorrichtung zum Umformen eines bandförmigen Werkstückes
DE102005007997B3 (de) Verfahren und Einrichtung zur Herstellung von Bauteilen
DE102005022043B3 (de) Verfahren und Vorrichtung zum Richten eines länglichen Werkstückes
EP2965830A1 (fr) Procede de fabrication d'un essieu de torsion a partir d'un profil creux en forme de tube et essieu de torsion
DE102005021946A1 (de) Verfahren und Vorrichtung zum Richten länglicher Werkstücke
EP3302841B1 (fr) Procédé de fabrication de tubes fendus en feuilles de tôle
DE102004041024A1 (de) Verfahren und Vorrichtung zum Herstellen eines längsnahtgeschweißten Hohlprofils
DE102006029637B4 (de) Verfahren und Vorrichtung zum Biegen eines zylinderförmigen Werkstücks
DE102004015073B3 (de) Vorrichtung und Verfahren zum Biegen eines Werkstücks
DE102014115426B4 (de) Vorrichtung und Verfahren zum kontinuierlichen voranschreitenden Umformen von Metallbändern zu einem Profil mit längsveränderlichem Querschnitt
WO2015003276A1 (fr) Procédé de fabrication de pièces annulaires et utilisation dudit procédé

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20140923

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAX Request for extension of the european patent (deleted)
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20180821

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20220722