EP1908536B1 - Apparatus for mechanically flowform bending of profiles - Google Patents

Apparatus for mechanically flowform bending of profiles Download PDF

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Publication number
EP1908536B1
EP1908536B1 EP06121861A EP06121861A EP1908536B1 EP 1908536 B1 EP1908536 B1 EP 1908536B1 EP 06121861 A EP06121861 A EP 06121861A EP 06121861 A EP06121861 A EP 06121861A EP 1908536 B1 EP1908536 B1 EP 1908536B1
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EP
European Patent Office
Prior art keywords
roller
roll
axis
parts
rolling
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.)
Not-in-force
Application number
EP06121861A
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German (de)
French (fr)
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EP1908536A1 (en
Inventor
Marcus Stolz
Andrea Kroschk
Adrian Hofmann
Arno Müller
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Klingelnberg AG
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Klingelnberg AG
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Publication date
Application filed by Klingelnberg AG filed Critical Klingelnberg AG
Priority to AT06121861T priority Critical patent/ATE414577T1/en
Priority to EP06121861A priority patent/EP1908536B1/en
Priority to DE502006002139T priority patent/DE502006002139D1/en
Publication of EP1908536A1 publication Critical patent/EP1908536A1/en
Application granted granted Critical
Publication of EP1908536B1 publication Critical patent/EP1908536B1/en
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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
    • 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

Definitions

  • the invention relates to devices used to bend profiles. In particular, it is about the so-called (cold) flow bending.
  • a roll bending machine which is equipped with a mandrel shaft, which is positioned in the interior of a profile to be bent in the bending zone.
  • the bending machine consists of a bearing on the inside of the curved profile center roller, a bending roller applied to the sheet outside and a arranged on the outlet side of the profile bending roller which acts on the sheet outer side, against the supporting action of a on the inlet side to the sheet outer side adjacent supporting role.
  • Another bending machine is from the German patent application DE 102004003681 A1 known. In the said patent application is about a novel process, which is also referred to as cold-flow bending, and a correspondingly designed bending machine.
  • the DE 102004003681 A1 describes a device according to the preamble of claim 1.
  • the object is achieved by a device according to claim 1.
  • a device for automated bending of profiles comprises a roller and a multi-part counter-pressure roller, which is arranged spaced from the roller on the opposite side of a profile to be bent.
  • the roller and the counter-pressure roller have roller axes which are parallel to each other.
  • pressure is exerted on the profile to be bent during bending by reducing the relative distance between the multi-part counterpressure roller and the roller and, on the other hand, pressure is exerted in a direction parallel to the roller axes in a controlled manner on the roller parts of the counterpressure roller in order to prevent the deformation of the roller Material flow can be specifically influenced.
  • the principle of the method is based on a rolling mill 20 integrated in a bending machine 10, which rolls the wall thickness of a longitudinal profile 1 according to the desired profile curvature.
  • the corresponding bending machine 10 is in Fig. 6 shown schematically.
  • a special rolling process according to the invention is superimposed on the known roll bending. In this special rolling process, the flow of the material is specifically influenced. This is done by a specially designed rolling mill 20.
  • the rolling process according to the invention can also be used for forming profiles without the usual bending rolls of a bending machine.
  • Both open and closed longitudinal profiles 1 are in the region of a bending head, respectively a bending roller 23, by the interaction of this bending roller 23 with a plurality of rollers (counter-roller 13, 14, Support roller 22) formed.
  • the longitudinal profile 1 to be bent may, but need not, undergo two different process levels in the bending according to the invention.
  • the profile 1 is rolled out with a rolling depth calculated for the respective radius. Because of the wall thickness change thus produced in a targeted manner, the longitudinal curvature of the profile 1 (ie, a curvature in the longitudinal direction of the longitudinal profile 1) arises.
  • a mandrel 24 held inside the profile can transfer the force from a rolling roller 11 to a counter-roller 13, 14 (also called center roller) of the rolling mill 20.
  • a counter-roller 13, 14 also called center roller
  • the longitudinal profile 1 can be bent by the position of a bending roller 23 in its exact form.
  • Z-rollers 18, 19 Perpendicular to the counter-roller 13, 14 according to the invention in the area of the rolling mill 20 so-called Z-rollers 18, 19 are arranged, which do not act directly on the profile 1 but through the counter-roller 14 through (ie indirectly).
  • a part 20 of a device 10 for the automatic bending of longitudinal profiles 1 is shown.
  • the position of the longitudinal profile 1 is indicated only by a reference arrow.
  • the longitudinal axis of the longitudinal profile 1 is perpendicular to the plane of the drawing, ie it runs parallel to the x-coordinate axis.
  • Fig. 1B is a highly simplified cross-section of a longitudinal profile to be bent 1 (hat profile) shown perpendicular to the longitudinal direction.
  • the apparatus 10 has a rolling mill 20 with a rolling head and a multi-part counter-pressure roller 13, 14, 15.
  • a rolling roller 11 serves as a rolling head.
  • the multi-part counter-pressure roller 13, 14, 15 is mounted and arranged with respect to the roller 11 so that there is a small gap therebetween. This gap corresponds approximately to the cross-sectional shape (cross section perpendicular to the longitudinal axis) of the longitudinal profile 1, which in Fig. 1B is shown.
  • the roller 11 are on one side of the longitudinal profile 1 and the counter-pressure roller 13, 14, 15 on the opposite side.
  • the multi-part counter-pressure roller has a first roller axis Z2, which runs essentially perpendicular to the longitudinal axis of the longitudinal profile 1. As mentioned, it is according to the invention in the counter-pressure roller to a multi-part counter-pressure roller.
  • the multi-part counter-pressure roller is also referred to here as a pair of rollers, since it has at least two roller parts 13, 14 which are arranged coaxially.
  • the roller parts 13, 14 may, but need not, sit on a common axle or shaft 21 (see Fig. 6 ), whose center line is in Fig. 1A is indicated as a roller axis Z2.
  • the roller parts 13, 14 are mounted so floating that the relative axial distance between the roller parts 13, 14 is variable.
  • either one of the roller parts can be fixed with respect to the axial position, while the other roller part is displaceable along the roller axis Z2 in the z-direction.
  • both roller parts 13, 14 can be displaceable along the roller axis Z2 in the z direction.
  • Fig. 1A is the axial distance between the roller parts 13, 14 occupied by an elastic disc 15.
  • This disc 15 is optional. It can also be used other resilient or elastic elements that allow a floating mounting of the roller parts 13, 14.
  • the main purpose of the elastic disc 15, or the equivalent means is to push apart the two roller parts 13 and 14 so as to better insert or pull in the longitudinal profile 1 to be reshaped into the rolling mill.
  • the disc 15 and the equivalently acting means are therefore also referred to as designating restoring or spacing elements.
  • the Z-rollers 18, 19 are not delivered until the longitudinal profile 1 is in the rolling mill 20
  • the roller 11 peak the rolling head
  • the multi-part counter-pressure roller can be delivered from the right and left to the longitudinal profile 1 so as to exert a forming force on the longitudinal profile 1.
  • This feed motion is also referred to as Y W -feed (Y W is the rolling axis parallel to the y-coordinate axis).
  • Y W is the rolling axis parallel to the y-coordinate axis.
  • additional rolling forces are used in the region of the rolling mill 20, which act laterally, ie perpendicular to the longitudinal direction of the longitudinal profiles (in the z-direction) (vertical Called pressing).
  • the rolling roller 11 ie, the rolling head
  • the multi-part counter-pressure roller mainly process the surfaces of the longitudinal profile 1 lying in the xz plane, while the perpendicularly acting rolling forces act on the surfaces lying either in the xy plane or lightly in the xy plane lying obliquely (see example Fig. 1B ).
  • the structure of the rolling mill 20 is selected such that in a direction parallel to the first roller axis Z2 controlled pressure is exerted on the roller parts 13, 14, whereby these roller parts 13, 14 in turn laterally applied to the longitudinal profile 1 rolling forces.
  • the controlled pressure is indicated by the double arrows C and D.
  • a first Z-roller 18 with a roller axis Y2 and a second Z-roller 19 with a roller axis Y1 are provided.
  • the axes Y1, Y2 are both substantially perpendicular to the first roller axis Z2.
  • the Z-roller 18 presses in the + z direction against an end region of the roller part 13 and the Z-roller 19 in the -z direction against an end region of the roller part 14.
  • rollers 13, 14, 15 and the roller 11 rotate.
  • Those circumferential surfaces of these rollers which have a radially outwardly facing surface normal roll on the corresponding surfaces of the longitudinal profile lying in the xz plane 1 off.
  • the roller parts 13, 14 it comes to a Sliding or grinding movements with respect to the surfaces of the longitudinal profile 1, which lie either in the xy plane or slightly inclined to the xy plane (see example Fig. 1B ).
  • Fig. 2 are in an enlarged section further details of the rolling mill 20 can be seen.
  • the rolling head 11 serving as a rolling head
  • the roller parts 13 and 14 In the middle between these elements 11, 13, 14, the longitudinal profile 1 is moved through in the x-direction.
  • Each of the roller parts 13, 14 is rotationally symmetrical with respect to the first roller axis Z2 executed, since the peripheral surfaces of these roller parts 13, 14 along the longitudinal profile 1 during forming / rolling must roll or slip.
  • Each of the roller parts 13, 14 is divided into sections or discs 13.1 - 13.3 and 14.1- 14.3, which have different circumferential diameters. Preferably, the diameter changes continuously along the roller axis Z2 without forming corners or edges.
  • roller parts 13, 14 can be used which have circumferential jumps or edges.
  • each roller part can be composed of individual disks which are seated on a common shaft 21. But it can also be solid one-piece roller parts are used, which are each made for special profile shapes as a tool.
  • the elastic, floating bearing is necessary in order to transfer the vertically acting rolling forces on the longitudinal profile 1 can.
  • a rolling mill 20 according to the invention of a bending machine 10 are shown.
  • the roller 11 is supported by a frame 12 which is movable in the y direction (Double arrow A).
  • the roller 11 may also comprise two or more discs 11.1, 11.2 or sections.
  • the multipart counter-roller 13, 14, 15 is supported by a frame 16 which is movable in the y-direction (double arrow B).
  • the vertically arranged Z-rollers 18 and 19 are also supported by respective frames 25 and 26 and can be delivered by displacement movements of these frames 25, 26 in + z and -z direction.
  • Fig. 5A Details of yet another embodiment are in Fig. 5A shown.
  • the Z-rollers are not shown.
  • a rolling head 27 is used here.
  • the rolling head 27 has an arcuate effective region 28 which exerts pressure on one side of the longitudinal profile 1 to be deformed.
  • the rolling head 27, unlike the rolling roller 11, is not designed as a rotationally symmetrical overall body.
  • the longitudinal profile 1 slips or slides along the arcuate effective region 28 of the rolling head 27. In the case of the rolling roller 11, however, it rolls on the longitudinal profile 1.
  • a so-called roller head 29 is used here.
  • the roller head 29 in turn has an effective range.
  • one or more rollers 30 are integrated in the roller head 29.
  • the roller head 29 indirectly exerts pressure on the longitudinal profile 1 to be formed via these integrated rollers 30 (the longitudinal profile 1 is in FIG Fig. 5B slightly enlarged to make it visible).
  • the roller head 29 is different than the rolling roller 11 is not designed as a rotationally symmetrical overall body.
  • the roller head 29 per se has the function of carrying the integrated rollers 30 and transferring the pressure to these rollers 30.
  • the longitudinal profile 1 slips or slides along the integrated rollers 30 of the roller head 29, which are thereby set in rotation and roll on the longitudinal profile 1.
  • the entire rolling roller 11 rolls on the longitudinal profile 1.
  • the device 10 has the advantage of being fast, reliable and accurate.
  • the device 10 can be easily and quickly adapted to a variety of longitudinal profiles by a suitable CNC control and by retooling the counter-rollers and roller.

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

Abstract

The device for automatic bending of longitudinal profiles (1) with a longitudinal axis useful in rolling bending machine, comprises a rolling mill (20) with a rolling head, a counter-pressure roller, which is arranged in reference to the rolling head and spaced by this on opposite side of the longitudinal profiles to be transformed, and roller pairs with two roller parts (13, 14) serving as counter-pressure roller having a first roller axis, which runs vertically to the longitudinal axis, a first Z-roller (18) with a second roller axis and a second Z-roller (19) with a third roller axis. The device for automatic bending of longitudinal profiles (1) with a longitudinal axis useful in rolling bending machine, comprises a rolling mill (20) with a rolling head, a counter-pressure roller, which is arranged in reference to the rolling head and spaced by this on opposite side of the longitudinal profiles to be transformed, and roller pairs with two roller parts (13, 14) serving as counter-pressure roller having a first roller axis, which runs vertically to the longitudinal axis, a first Z-roller (18) with a second roller axis and a second Z-roller (19) with a third roller axis. The two roller parts are coaxially arranged and floatingly stored, so that the relative axial distance is variable between the roller parts. A controlled pressure of the parts is exerted in a direction parallel to the first roller axis. The both Z-rollers run vertically to the first roller axis. The parts and the rolling head exert direct pressure on the profiles in a bending region of the rolling mill. The device acts itself a head, a rolling roller, and a roller head with the rolling head. The roller head has an arc-shaped region, but it is not implemented itself as rotationally symmetrical total body. The rolling roller is symmetrically implemented and rotationally stored in the reference of another rolling axis. The roller head has rollers, which are arranged in the arc-shaped region of the roller head. The rolling roller has a circumferential form, which is adapted to an interior form of the profiles to be bent. The roller parts have a circumferential form, which is adapted to an exterior form of the profiles to be bent. The pressure is exertable on one of the roller parts by each of the Z-roller, in which the relative axial position of the second roller axis and the third roller axis are automatically adjusted. The axial position of the other roller parts is fixed at the first roller axis. The Z-roller with a circumferential region presses against a front region of the roller parts. The rolling head and the parts are stored and arranged as counter-pressure roller, so that they are deliverable by a space reduction relative to each other to exert the two pressure sides of the profiles. The profiles are displaced by the device and are formed by the interaction with the rolling head and the roller parts in an arc-shaped profile. A material flow emerging at a bent outer side front wall over the region of the roller parts operating at sidewalls of the profiles are turned around over assigned sidewalls in a bent inner side of front wall. A bend line is shifted to the bent inner side of the profile and a structure flow is caused by the outer side in the direction of the inner side. Each of the roller parts has a partially conical circumferential form and sections, which have different circumferential diameters. Each of the roller parts is rotationally symmetrical in reference of the first roller axis. The diameter monotonically changes itself along the roller axis.

Description

Die Erfindung betrifft Vorrichtungen, die eingesetzt werden, um Profile zu biegen. Insbesondere geht es um das sogenannte (Kalt-) Fliessformbiegen.The invention relates to devices used to bend profiles. In particular, it is about the so-called (cold) flow bending.

HINTERGRUND DER ERFINDUNGBACKGROUND OF THE INVENTION

In der deutschen Patentanmeldung DE 19717472 A1 wird eine Walzenbiegemaschine beschrieben, die mit einem Dornschaft ausgerüstet ist, der im Innenraum eines zu biegenden Profils in der Biegezone positioniert wird. Die Biegemaschine besteht aus einer an der Innenseite des gebogenen Profils sich anlegenden Mittelrolle, einer sich an der Bogenaussenseite anlegenden Walzrolle und einer an der Auslaufseite des Profils angeordneten Biegerolle, welche auf die Bogenaussenseite wirkt, und zwar entgegen der Abstützwirkung einer an der Einlaufseite an der Bogenaussenseite anliegenden Stützrolle.In the German patent application DE 19717472 A1 a roll bending machine is described, which is equipped with a mandrel shaft, which is positioned in the interior of a profile to be bent in the bending zone. The bending machine consists of a bearing on the inside of the curved profile center roller, a bending roller applied to the sheet outside and a arranged on the outlet side of the profile bending roller which acts on the sheet outer side, against the supporting action of a on the inlet side to the sheet outer side adjacent supporting role.

Eine weitere Biegemaschine ist aus der deutschen Patentanmeldung DE 102004003681 A1 bekannt. In der besagten Patentanmeldung geht es um ein neuartiges Verfahren, das auch als Kalt-Fliessformbiegen bezeichnet wird, und um eine entsprechend ausgelegte Biegemaschine.Another bending machine is from the German patent application DE 102004003681 A1 known. In the said patent application is about a novel process, which is also referred to as cold-flow bending, and a correspondingly designed bending machine.

Die DE 102004003681 A1 beschreibt eine Vorrichtung gemäß dem Oberbegriff des Anspruchs 1.The DE 102004003681 A1 describes a device according to the preamble of claim 1.

Es ist eine Aufgabe der Erfindung eine verbesserte Lösung für die maschinelle Umsetzung des Kalt-Fliessformbiegens bereit zu stellen.It is an object of the invention to provide an improved solution for the mechanical implementation of cold-flow bending.

Es ist eine weitere Aufgabe der Erfindung eine Biegemaschine bereit zu stellen, die flexibler einsetzbar ist als bisher bekannte Maschinen.It is a further object of the invention to provide a bending machine which is more flexible than hitherto known machines.

Die Aufgabe wird durch eine Vorrichtung gemäss Anspruch 1 gelöst.The object is achieved by a device according to claim 1.

Gemäss Erfindung wird eine Vorrichtung zum automatisierten Biegen von Profilen bereit gestellt. Die Maschine umfasst eine Walzrolle und eine mehrteilige Gegendruckrolle, die beabstandet von der Walzrolle auf der gegenüberliegende Seite eines zu biegenden Profils angeordnet ist. Die Walzrolle und die Gegendruckrolle weisen Rollenachsen auf, die parallel zueinander verlaufen. Gemäss Erfindung dienen mindestens zwei Rollenteile als Gegendruckrolle. Diese Rollenteile sind koaxial zueinander angeordnet und so schwimmend gelagert, dass der relative axiale Abstand zwischen den beiden Rollenteilen variabel ist. In der Maschine wird beim Biegen einerseits Druck auf das zu biegende Profil ausgeübt, indem der relative Abstand zwischen mehrteiliger Gegendruckrolle und Walzrolle reduziert wird und andererseits wird in einer Richtung parallel zu den Rollenachsen kontrolliert Druck auf die Rollenteile der Gegendruckrolle ausgeübt, um das beim Umformen des Materials stattfindende Fliessen gezielt beeinflussen zu können.According to the invention, a device for automated bending of profiles is provided. The machine comprises a roller and a multi-part counter-pressure roller, which is arranged spaced from the roller on the opposite side of a profile to be bent. The roller and the counter-pressure roller have roller axes which are parallel to each other. According to the invention serve at least two roller parts as a counter-pressure roller. These roller parts are arranged coaxially with each other and mounted so floating that the relative axial distance between the two roller parts is variable. In the machine, on the one hand, pressure is exerted on the profile to be bent during bending by reducing the relative distance between the multi-part counterpressure roller and the roller and, on the other hand, pressure is exerted in a direction parallel to the roller axes in a controlled manner on the roller parts of the counterpressure roller in order to prevent the deformation of the roller Material flow can be specifically influenced.

Vorteilhafte Ausgestaltungen der erfindungsgemässen Vorrichtung bilden die Gegenstände der Ansprüche 2 bis 15.Advantageous embodiments of the inventive device form the subject matter of claims 2 to 15.

ZEICHNUNGENDRAWINGS

Ausführungsbeispiele der Erfindung werden im Folgenden unter Bezugnahme auf die Zeichnungen näher beschrieben. Es zeigen:

FIG. 1A
eine schematische Draufsicht auf einen Teil einer ersten Vorrichtung gemäss Erfindung;
FIG. 1B
einen stark vereinfachten Querschnitt eines zu biegenden Längsprofils (Hutprofil) senkrecht zur Längsrichtung;
FIG. 2
eine schematische Draufsicht eines Teils der Rollen einer ersten Vorrichtung gemäss Erfindung;
FIG. 3
eine detaillierte Draufsicht auf einen Teil einer weiteren Vorrichtung gemäss Erfindung;
FIG. 4
eine schematische 3-dimensionale Ansicht auf einen Teil einer weiteren Vorrichtung gemäss Erfindung;
FIG. 5A
eine schematische 3-dimensionale Ansicht auf einen Teil einer weiteren Vorrichtung gemäss Erfindung;
FIG. 5B
eine schematische Seitenansicht eines Teils einer weiteren Vorrichtung gemäss Erfindung;
FIG. 6
eine stark schematisierte Ansicht einer ersten Vorrichtung gemäss Erfindung.
Embodiments of the invention will be described in more detail below with reference to the drawings. Show it:
FIG. 1A
a schematic plan view of a portion of a first device according to the invention;
FIG. 1B
a greatly simplified cross section of a longitudinal profile to be bent (hat profile) perpendicular to the longitudinal direction;
FIG. 2
a schematic plan view of part of the rollers of a first device according to the invention;
FIG. 3
a detailed plan view of a part of another device according to the invention;
FIG. 4
a schematic 3-dimensional view of a part of another device according to the invention;
FIG. 5A
a schematic 3-dimensional view of a part of another device according to the invention;
FIG. 5B
a schematic side view of part of another device according to the invention;
FIG. 6
a highly schematic view of a first device according to the invention.

DETAILLIERTE BESCHREIBUNGDETAILED DESCRIPTION

Das Prinzip des Verfahrens beruht auf einem in eine Biegemaschine 10 integrierten Walzwerk 20, welches die Wandstärke eines Längsprofils 1 entsprechend der gewünschten Profilkrümmung auswalzt. Die entsprechende Biegemaschine 10 ist in Fig. 6 schematisch gezeigt. Je nach Ausführungsform wird dem bekannten Roll-Biegen ein spezieller erfindungsgemässer Walzvorgang überlagert. Bei diesem speziellen Walzvorgang wird das Fliessen des Materials gezielt beeinflusst. Dies geschieht durch ein ganz speziell ausgebildetes Walzwerk 20. Der erfindungsgemässe Walzvorgang kann aber auch ohne die üblichen Biegerollen einer Biegemaschine zum Umformen von Profilen verwendet werden.The principle of the method is based on a rolling mill 20 integrated in a bending machine 10, which rolls the wall thickness of a longitudinal profile 1 according to the desired profile curvature. The corresponding bending machine 10 is in Fig. 6 shown schematically. Depending on the embodiment, a special rolling process according to the invention is superimposed on the known roll bending. In this special rolling process, the flow of the material is specifically influenced. This is done by a specially designed rolling mill 20. The rolling process according to the invention can also be used for forming profiles without the usual bending rolls of a bending machine.

Sowohl offene wie auch geschlossene Längsprofile 1 werden im Bereich eines Biegekopfes, respektive einer Biegerolle 23, durch das Zusammenwirken dieser Biegerolle 23 mit mehreren Rollen (Gegenrolle 13, 14, Stützrolle 22) umgeformt. Das zu biegende Längsprofil 1 kann, muss aber nicht, beim erfindungsgemässen Biegen zwei unterschiedliche Prozessebenen durchlaufen. In dem sogenannten Walzwerk 20 wird das Profil 1 mit einer für den jeweiligen Radius berechneten Auswalztiefe ausgewalzt. Wegen der so gezielt entstehenden Wandstärkenänderung entsteht die Längskrümmung des Profils 1 (d.h. eine Krümmung in Längsrichtung des Längsprofils 1). Bei geschlossenen Längsprofilen 1 kann ein im Profilinneren gehaltener Dorn 24 die Kraft von einer Walzrolle 11 zu einer Gegenrolle 13, 14 (auch Mittelrolle genannt) des Walzwerks 20 übertragen. In der sogenannten Biegeebene (im Bereich einer Biegerolle 23) kann das Längsprofil 1 durch die Position einer Biegerolle 23 in seine exakte Form gebogen werden. Senkrecht zu der Gegenrolle 13, 14 sind gemäss Erfindung im Bereich des Walzwerks 20 sogenannte Z-Rollen 18, 19 angeordnet, die nicht direkt auf das Profil 1 sondern durch die Gegenrolle 14 hindurch (also indirekt) einwirken.Both open and closed longitudinal profiles 1 are in the region of a bending head, respectively a bending roller 23, by the interaction of this bending roller 23 with a plurality of rollers (counter-roller 13, 14, Support roller 22) formed. The longitudinal profile 1 to be bent may, but need not, undergo two different process levels in the bending according to the invention. In the so-called rolling mill 20, the profile 1 is rolled out with a rolling depth calculated for the respective radius. Because of the wall thickness change thus produced in a targeted manner, the longitudinal curvature of the profile 1 (ie, a curvature in the longitudinal direction of the longitudinal profile 1) arises. With closed longitudinal profiles 1, a mandrel 24 held inside the profile can transfer the force from a rolling roller 11 to a counter-roller 13, 14 (also called center roller) of the rolling mill 20. In the so-called bending plane (in the region of a bending roller 23), the longitudinal profile 1 can be bent by the position of a bending roller 23 in its exact form. Perpendicular to the counter-roller 13, 14 according to the invention in the area of the rolling mill 20 so-called Z-rollers 18, 19 are arranged, which do not act directly on the profile 1 but through the counter-roller 14 through (ie indirectly).

Im Folgenden wird das Prinzip der Erfindung anhand einer ersten Ausführungsform der Erfindung erläutert. In Fig. 1A ist ein als Walzwerk 20 bezeichneter Teil einer Vorrichtung 10 zum automatisierten Biegen von Längsprofilen 1 gezeigt. Längsprofile 1, die in einer solchen Maschine 10 umgeformt werden, weisen typischerweise eine Längsachse auf. In Fig. 1A ist die Lage des Längsprofils 1 nur durch einen Bezugspfeil angedeutet. Die Längsachse des Längsprofils 1 steht auf der Zeichenebene senkrecht, d.h. sie verläuft parallel zur x-Koordinatenachse. In Fig. 1B ist ein stark vereinfachter Querschnitt eines zu biegenden Längsprofils 1 (Hutprofil) senkrecht zur Längsrichtung gezeigt.In the following, the principle of the invention will be explained with reference to a first embodiment of the invention. In Fig. 1A a part 20 of a device 10 for the automatic bending of longitudinal profiles 1 is shown. Longitudinal profiles 1, which are formed in such a machine 10, typically have a longitudinal axis. In Fig. 1A the position of the longitudinal profile 1 is indicated only by a reference arrow. The longitudinal axis of the longitudinal profile 1 is perpendicular to the plane of the drawing, ie it runs parallel to the x-coordinate axis. In Fig. 1B is a highly simplified cross-section of a longitudinal profile to be bent 1 (hat profile) shown perpendicular to the longitudinal direction.

Die Vorrichtung 10 weist ein Walzwerk 20 mit einem Walzkopf und einer mehrteiligen Gegendruckrolle 13, 14, 15 auf. Im gezeigten Ausführungsbeispiel dient eine Walzrolle 11 als Walzkopf. Die mehrteilige Gegendruckrolle 13, 14, 15 ist in Bezug zu der Walzrolle 11 so gelagert und angeordnet, dass sich dazwischen ein kleiner Spalt ergibt. Dieser Spalt entspricht in etwa der Querschnittsform (Querschnitt senkrecht zur Längsachse) des Längsprofils 1, die in Fig. 1B gezeigt ist. In Bezug zu dem Längsprofil 1 befinden sich die Walzrolle 11 auf einer Seite des Längsprofils 1 und die Gegendruckrolle 13, 14, 15 auf der gegenüberliegenden Seite.The apparatus 10 has a rolling mill 20 with a rolling head and a multi-part counter-pressure roller 13, 14, 15. In the exemplary embodiment shown, a rolling roller 11 serves as a rolling head. The multi-part counter-pressure roller 13, 14, 15 is mounted and arranged with respect to the roller 11 so that there is a small gap therebetween. This gap corresponds approximately to the cross-sectional shape (cross section perpendicular to the longitudinal axis) of the longitudinal profile 1, which in Fig. 1B is shown. With respect to the longitudinal profile 1, the roller 11 are on one side of the longitudinal profile 1 and the counter-pressure roller 13, 14, 15 on the opposite side.

Die mehrteilige Gegendruckrolle weist eine erste Rollenachse Z2 auf, die im Wesentlichen senkrecht zu der Längsachse des Längsprofils 1 verläuft. Wie erwähnt, handelt es sich gemäss Erfindung bei der Gegendruckrolle um eine mehrteilige Gegendruckrolle. Die mehrteilige Gegendruckrolle wird hier auch als Rollenpaar bezeichnet, da sie mindestens zwei Rollenteile 13, 14 aufweist, die koaxial angeordnet sind. Die Rollenteile 13, 14 können, müssen aber nicht, auf einer gemeinsamen Achse oder Welle 21 sitzen (siehe Fig. 6), deren Mittelpunktlinie in Fig. 1A als Rollenachse Z2 angedeutet ist. Die Rollenteile 13, 14 sind so schwimmend gelagert, dass der relative axiale Abstand zwischen den Rollenteilen 13, 14 variabel ist. Zu diesem Zweck kann entweder eines der Rollenteile in Bezug auf die axiale Lage fixiert sein, während das andere Rollenteil entlang der Rollenachse Z2 in z-Richtung verschiebbar ist. Oder es können beide Rollenteile 13, 14 entlang der Rollenachse Z2 in z-Richtung verschiebbar sein.The multi-part counter-pressure roller has a first roller axis Z2, which runs essentially perpendicular to the longitudinal axis of the longitudinal profile 1. As mentioned, it is according to the invention in the counter-pressure roller to a multi-part counter-pressure roller. The multi-part counter-pressure roller is also referred to here as a pair of rollers, since it has at least two roller parts 13, 14 which are arranged coaxially. The roller parts 13, 14 may, but need not, sit on a common axle or shaft 21 (see Fig. 6 ), whose center line is in Fig. 1A is indicated as a roller axis Z2. The roller parts 13, 14 are mounted so floating that the relative axial distance between the roller parts 13, 14 is variable. For this purpose, either one of the roller parts can be fixed with respect to the axial position, while the other roller part is displaceable along the roller axis Z2 in the z-direction. Or both roller parts 13, 14 can be displaceable along the roller axis Z2 in the z direction.

In Fig. 1A ist der axiale Abstand zwischen den Rollenteilen 13, 14 durch eine elastische Scheibe 15 belegt. Diese Scheibe 15 ist optional. Es können auch andere federnde oder elastische Elemente eingesetzt werden, die eine schwimmende Lagerung der Rollenteile 13, 14 ermöglichen. Hauptzweck der elastischen Scheibe 15, oder der gleichwirkenden Mittel ist es, die beiden Rollenteile 13 und 14 auseinander zu drücken, um so möglichst das umzuformende Längsprofil 1 besser in das Walzwerk einschieben oder hineinziehen zu können Die Scheibe 15 und die gleichwirkenden Mittel werdend daher auch als rückstellende oder abstandhaltende Elemente bezeichnet. Vorzugsweise werden die Z-Rollen 18, 19 erst dann zugestellt, wenn sich das Längsprofil 1 im Walzwerk 20 befindetIn Fig. 1A is the axial distance between the roller parts 13, 14 occupied by an elastic disc 15. This disc 15 is optional. It can also be used other resilient or elastic elements that allow a floating mounting of the roller parts 13, 14. The main purpose of the elastic disc 15, or the equivalent means is to push apart the two roller parts 13 and 14 so as to better insert or pull in the longitudinal profile 1 to be reshaped into the rolling mill. The disc 15 and the equivalently acting means are therefore also referred to as designating restoring or spacing elements. Preferably, the Z-rollers 18, 19 are not delivered until the longitudinal profile 1 is in the rolling mill 20

Wie in Fig. 1A durch die Doppelpfeile A und B angedeutet, können die Walzrolle 11 (spricht der Walzkopf) und die mehrteilige Gegendruckrolle von rechts und links auf das Längsprofil 1 zugestellt werden, um so eine Umformkraft auf das Längsprofil 1 auszuüben. Bei dieser Zustellbewegung kann der Abstand zwischen den Achsen Z1 und Z2 vergrössert oder verkleinert werden. Diese Zustellbewegung wird auch als YW-Zustellung (YW ist die Walzachse die parallel zur y-Koordinatenachse liegt) bezeichnet. In einer weniger flexiblen Ausführungsform ist die Lage einer Achse (z.B. Achse Y2) fest. Während die andere Achse (z.B. Achse Y1) verschoben werden kann.As in Fig. 1A indicated by the double arrows A and B, the roller 11 (speaks the rolling head) and the multi-part counter-pressure roller can be delivered from the right and left to the longitudinal profile 1 so as to exert a forming force on the longitudinal profile 1. In this feed movement, the distance between the axes Z1 and Z2 can be increased or decreased. This feed motion is also referred to as Y W -feed (Y W is the rolling axis parallel to the y-coordinate axis). In a less flexible Embodiment, the position of an axis (eg axis Y2) is fixed. While the other axis (eg axis Y1) can be moved.

Um das Fliessen des Materials des zu biegenden Längsprofils 1 gezielt beeinflussen zu können, kommen gemäss Erfindung aber zusätzlich im Bereich des Walzwerks 20 Walzkräfte zum Einsatz, die seitlich, d.h. senkrecht zu der Längsrichtung der Längsprofile, (sprich in z-Richtung) angreifen (senkrechte Pressung genannt). Die Walzrolle 11 (d.h. der Walzkopf) und die mehrteilige Gegendruckrolle bearbeiten hauptsächlich die in der x-z-Ebene liegenden Flächen des Längsprofils 1, während die senkrecht wirkenden Walzkräfte auf die Flächen einwirken, die entweder in der x-y-Ebene liegen oder zur x-y-Ebene leicht schräg geneigt liegen (siehe Beispiel Fig. 1B).In order to be able to influence the flow of the material of the longitudinal profile 1 to be bent, according to the invention, additional rolling forces are used in the region of the rolling mill 20, which act laterally, ie perpendicular to the longitudinal direction of the longitudinal profiles (in the z-direction) (vertical Called pressing). The rolling roller 11 (ie, the rolling head) and the multi-part counter-pressure roller mainly process the surfaces of the longitudinal profile 1 lying in the xz plane, while the perpendicularly acting rolling forces act on the surfaces lying either in the xy plane or lightly in the xy plane lying obliquely (see example Fig. 1B ).

Gemäss Erfindung ist der Aufbau des Walzwerks 20 so gewählt, dass in einer Richtung parallel zu der ersten Rollenachse Z2 kontrolliert Druck auf die Rollenteile 13, 14 ausgeübt wird, wodurch diese Rollenteile 13, 14 wiederum seitlich auf das Längsprofil 1 einwirkende Walzkräfte aufbringen. In dem in Fig. 1A gezeigten Beispiel wird der kontrollierte Druck durch die Doppelpfeile C und D angedeutet. Um den notwendigen Druck ausüben zu können, sind eine erste Z-Rolle 18 mit einer Rollenachse Y2 und eine zweite Z-Rolle 19 mit einer Rollenachse Y1 vorgesehen. Die Achsen Y1, Y2 stehen beide im Wesentlichen senkrecht zu der ersten Rollenachse Z2. Durch jede der Z-Rollen 18, 19 wird Druck (siehe Doppelpfeile C, D) auf die Rollenteile 13, 14 ausgeübt, indem die relative Achsenlage der Rollenachsen Y1, Y2 maschinell verstellt wird.According to the invention, the structure of the rolling mill 20 is selected such that in a direction parallel to the first roller axis Z2 controlled pressure is exerted on the roller parts 13, 14, whereby these roller parts 13, 14 in turn laterally applied to the longitudinal profile 1 rolling forces. In the in Fig. 1A As shown, the controlled pressure is indicated by the double arrows C and D. In order to exert the necessary pressure, a first Z-roller 18 with a roller axis Y2 and a second Z-roller 19 with a roller axis Y1 are provided. The axes Y1, Y2 are both substantially perpendicular to the first roller axis Z2. Through each of the Z-rollers 18, 19 pressure (see double arrows C, D) is exerted on the roller parts 13, 14 by the relative axial position of the roller axes Y1, Y2 is adjusted by machine.

Im gezeigten Beispiel drückt die Z-Rolle 18 in +z Richtung gegen einen Stirnbereich des Rollenteils 13 und die Z-Rolle 19 in -z Richtung gegen einen Stirnbereich des Rollenteils 14.In the example shown, the Z-roller 18 presses in the + z direction against an end region of the roller part 13 and the Z-roller 19 in the -z direction against an end region of the roller part 14.

Wird das Längsprofil 1 durch das Walzwerk 20 bewegt, so drehen sich die Rollen 13, 14, 15 und die Rolle 11. Diejenigen Umfangsflächen dieser Rollen, die eine radial nach aussen weisende Flächennormale haben rollen auf den entsprechenden in der x-z Ebene liegenden Flächen des Längsprofils 1 ab. Im Bereich der geneigten Seitenflächen der Rollenteile 13, 14 kommt es zu einer Rutsch- oder Schleifbewegungen in Bezug auf die Flächen des Längsprofils 1, die entweder in der x-y-Ebene liegen oder zur x-y-Ebene leicht schräg geneigt liegen (siehe Beispiel Fig. 1B).If the longitudinal profile 1 is moved through the rolling mill 20, then the rollers 13, 14, 15 and the roller 11 rotate. Those circumferential surfaces of these rollers which have a radially outwardly facing surface normal roll on the corresponding surfaces of the longitudinal profile lying in the xz plane 1 off. In the area of the inclined side surfaces of the roller parts 13, 14, it comes to a Sliding or grinding movements with respect to the surfaces of the longitudinal profile 1, which lie either in the xy plane or slightly inclined to the xy plane (see example Fig. 1B ).

In Fig. 2 sind in einem vergrösserten Ausschnitt weitere Details des Walzwerks 20 zu erkennen. Rechts ist die als Walzkopf dienende Walzrolle 11 und links sind die Rollenteile 13 und 14 gezeigt. Mittig zwischen diesen Elemente 11, 13, 14 wird das Längsprofil 1 in x-Richtung hindurchbewegt. Wie auch in Fig. 1A, ist in Fig. 2 eine Variante gezeigt bei der mittig zwischen den Rollenteilen 13, 14 eine optionale elastische Scheibe 15 angeordnet ist.In Fig. 2 are in an enlarged section further details of the rolling mill 20 can be seen. On the right is the rolling head 11 serving as a rolling head, and on the left are the roller parts 13 and 14. In the middle between these elements 11, 13, 14, the longitudinal profile 1 is moved through in the x-direction. As well as in Fig. 1A , is in Fig. 2 a variant shown in the middle between the roller parts 13, 14 an optional elastic disc 15 is arranged.

Jedes der Rollenteile 13, 14 ist rotationssymmetrisch in Bezug auf die erste Rollenachse Z2 ausgeführt, da die Umfangsflächen dieser Rollenteile 13, 14 entlang des Längsprofils 1 beim Umformen/Walzen abrollen bzw. rutschen müssen. Jedes der Rollenteile 13, 14 ist in Abschnitte oder Scheiben 13.1 - 13.3 und 14.1- 14.3 aufgeteilt, die unterschiedliche Umfangsdurchmesser haben. Vorzugsweise ändert sich der Durchmesser entlang der Rollenachse Z2 stetig ohne Ecken oder Kanten zu bilden. Je nach Form des Längsprofils 1 können aber auch Rollenteile 13, 14 eingesetzt werden, die Umfangssprünge oder -kanten aufweisen.Each of the roller parts 13, 14 is rotationally symmetrical with respect to the first roller axis Z2 executed, since the peripheral surfaces of these roller parts 13, 14 along the longitudinal profile 1 during forming / rolling must roll or slip. Each of the roller parts 13, 14 is divided into sections or discs 13.1 - 13.3 and 14.1- 14.3, which have different circumferential diameters. Preferably, the diameter changes continuously along the roller axis Z2 without forming corners or edges. Depending on the shape of the longitudinal profile 1 but also roller parts 13, 14 can be used which have circumferential jumps or edges.

Um die Gegenrolle, die aus den Rollenteilen 13, 14 und gegebenenfalls 15 gebildet wird, an das jeweilige Längsprofil anpassen zu können, kann jedes Rollenteil aus einzelnen Scheiben zusammengesetzt werden, die auf einer gemeinsamen Welle 21 sitzen. Es können aber auch solide einstückige Rollenteile zum Einsatz kommen, die jeweils für spezielle Profilformen als Werkzeug angefertigt werden.In order to be able to adapt the counter roller, which is formed from the roller parts 13, 14 and optionally 15, to the respective longitudinal profile, each roller part can be composed of individual disks which are seated on a common shaft 21. But it can also be solid one-piece roller parts are used, which are each made for special profile shapes as a tool.

Die elastische, schwimmende Lagerung ist notwendig, um die senkrecht wirkenden Walzkräfte auf das Längsprofil 1 übertragen zu können.The elastic, floating bearing is necessary in order to transfer the vertically acting rolling forces on the longitudinal profile 1 can.

In Fig. 3 sind weitere Details eines erfindungsgemässen Walzwerks 20 einer Biegemaschine 10 gezeigt. Wie auch bereits in Fig. 1A gezeigt, wird die Walzrolle 11 von einem Rahmen 12 getragen, der in y-Richtung bewegbar ist (Doppelpfeil A). Die Walzrolle 11 kann auch zwei oder mehr Scheiben 11.1, 11.2 oder Abschnitten umfassen. Die mehrteilige Gegenrolle 13, 14, 15 wird von einem Rahmen 16 getragen, der in y-Richtung bewegbar ist (Doppelpfeil B). Die senkrecht angeordneten Z-Rollen 18 und 19 werden auch von entsprechenden Rahmen 25 und 26 getragen und können durch Verschiebungsbewegungen dieser Rahmen 25, 26 in +z und -z Richtung zugestellt werden.In Fig. 3 Further details of a rolling mill 20 according to the invention of a bending machine 10 are shown. As already in Fig. 1A shown, the roller 11 is supported by a frame 12 which is movable in the y direction (Double arrow A). The roller 11 may also comprise two or more discs 11.1, 11.2 or sections. The multipart counter-roller 13, 14, 15 is supported by a frame 16 which is movable in the y-direction (double arrow B). The vertically arranged Z-rollers 18 and 19 are also supported by respective frames 25 and 26 and can be delivered by displacement movements of these frames 25, 26 in + z and -z direction.

In einer speziellen Ausführungsform der Erfindung kann entweder nur die Walzrolle 11 (respektive der Walzkopf) oder die mehrteilige Gegendruckrolle 13, 14, 15 zugestellt werden, da es letztendlich nur auf eine Relativbewegung dieser Rollen ankommt, um im Walzwerk 20 den notwendigen Druck auf das umzuformende Längsprofil 1 ausüben.In a specific embodiment of the invention, either only the rolling roller 11 (or the rolling head) or the multi-part counter-pressure roller 13, 14, 15 delivered, since it ultimately depends only on a relative movement of these roles to 20 in the rolling mill, the necessary pressure on the reshaped Exercise longitudinal profile 1.

Details einer weiteren Ausführungsform sind in Fig. 4 gezeigt.Details of a further embodiment are in Fig. 4 shown.

Details noch einer weiteren Ausführungsform sind in Fig. 5A gezeigt. Bei der in Fig. 5A gezeigten Ausführungsform sind die Z-Rollen nicht gezeigt. Statt einer Walzrolle 11 wird hier ein Walzkopf 27 eingesetzt. Der Walzkopf 27 hat einen bogenförmigen Wirkbereich 28, der Druck ausübt auf eine Seite des zu verformenden Längsprofils 1. Als Gesamtes betrachtet ist der Walzkopf 27 anders als die Walzrolle 11 nicht als rotationssymmetrischer Gesamtkörper ausgeführt. Das Längsprofil 1 rutscht oder gleitet entlang des bogenförmigen Wirkbereichs 28 des Walzkopfes 27. Bei der Walzrolle 11 hingegen rollt diese am Längsprofil 1 ab.Details of yet another embodiment are in Fig. 5A shown. At the in Fig. 5A In the embodiment shown, the Z-rollers are not shown. Instead of a rolling roller 11, a rolling head 27 is used here. The rolling head 27 has an arcuate effective region 28 which exerts pressure on one side of the longitudinal profile 1 to be deformed. Considered overall, the rolling head 27, unlike the rolling roller 11, is not designed as a rotationally symmetrical overall body. The longitudinal profile 1 slips or slides along the arcuate effective region 28 of the rolling head 27. In the case of the rolling roller 11, however, it rolls on the longitudinal profile 1.

Details einer gegenwärtig gegenüber der in Fig. 5A gezeigten Ausführungsform bevorzugten Ausführungsform sind in Fig. 5B gezeigt. In dieser Abbildung sind die Z-Rollen nicht gezeigt. Statt einem Walzkopf 27 oder einer Walzrolle 11 kommt hier ein sogenannter Rollenkopf 29 zum Einsatz. Der Rollenkopf 29 hat wiederum einen Wirkbereich. Im Wirkbereich sind eine oder mehrere Rollen 30 in den Rollenkopf 29 integriert. Der Rollenkopf 29 übt indirekt über diese integrierten Rollen 30 Druck aus auf das umzuformende Längsprofil 1 (das Längsprofil 1 ist in Fig. 5B etwas vergrössert dargestellt, um es sichtbar zu machen). Je nach Ausführungsform gibt es integrierte Rollen 30, die in -y Richtung und/oder in +z und -z Richtung Druck ausüben auf die jeweiligen Seiten oder Bereiche des zu verformenden Längsprofils 1. Als Gesamtes betrachtet ist der Rollenkopf 29 anders als die Walzrolle 11 nicht als rotationssymmetrischer Gesamtkörper ausgeführt. Der Rollenkopf 29 an sich hat die Funktion die integrierten Rollen 30 zu tragen und den Druck auf diese Rollen 30 zu übertragen. Das Längsprofil 1 rutscht oder gleitet entlang der integrierten Rollen 30 des Rollenkopfes 29, die dadurch in Rotation versetzt werden und am Längsprofil 1 abrollen. Bei der Walzrolle 11 hingegen rollt die gesamte Walzrolle 11 am Längsprofil 1 ab.Details of a present versus the in Fig. 5A embodiment shown are preferred in Fig. 5B shown. In this illustration, the Z rollers are not shown. Instead of a rolling head 27 or a rolling roller 11, a so-called roller head 29 is used here. The roller head 29 in turn has an effective range. In the effective range, one or more rollers 30 are integrated in the roller head 29. The roller head 29 indirectly exerts pressure on the longitudinal profile 1 to be formed via these integrated rollers 30 (the longitudinal profile 1 is in FIG Fig. 5B slightly enlarged to make it visible). Depending on the embodiment, there are integrated rollers 30, which are in -y Direction and / or in + z and -z direction exert pressure on the respective sides or areas of the longitudinal profile to be deformed 1. Considered as a whole, the roller head 29 is different than the rolling roller 11 is not designed as a rotationally symmetrical overall body. The roller head 29 per se has the function of carrying the integrated rollers 30 and transferring the pressure to these rollers 30. The longitudinal profile 1 slips or slides along the integrated rollers 30 of the roller head 29, which are thereby set in rotation and roll on the longitudinal profile 1. In the case of the rolling roller 11, on the other hand, the entire rolling roller 11 rolls on the longitudinal profile 1.

Die Vorrichtung 10 hat den Vorteil, dass sie schnell, zuverlässig und genau arbeitet. Die Vorrichtung 10 kann durch eine geeignete CNC Steuerung und durch Umrüsten der Gegenrollen und Walzrolle einfach und schnell an verschiedenste Längsprofile angepasst werden.The device 10 has the advantage of being fast, reliable and accurate. The device 10 can be easily and quickly adapted to a variety of longitudinal profiles by a suitable CNC control and by retooling the counter-rollers and roller.

Diese erfindungsgemässe Kombination führt zu Umformmöglichkeiten, welche bisher nicht erreichbar waren. Präzise, reproduzierbare Biegekonturen mit geringsten Eigenspannungen sind das Ergebnis des beschriebenen Fliessformbiegens. Die Werkstoffpalette, die sich für dieses Verfahren eignet, reicht von weichen NE-Metallen bis hin zu hochfesten Stählen. Es können rollierte Profile in geschlossener oder offener Ausführung, extrudierte Strangpressprofile oder Rohre in unterschiedlichsten Querschnittsgeometrien gebogen werden.This inventive combination leads to forming possibilities, which were previously unavailable. Precise, reproducible bending contours with the lowest residual stresses are the result of the described flow-forming bending. The range of materials suitable for this process ranges from soft non-ferrous metals to high-strength steels. Rolled profiles in closed or open design, extruded extruded profiles or tubes in various cross-sectional geometries can be bent.

Mithilfe des neuartigen inkrementellen Biegeverfahrens lassen sich Profile aus hochfestem Stahl bis hin zu Aluminium prozesssicher umformen.Using the innovative incremental bending process, profiles from high-strength steel to aluminum can be reliably transformed.

Claims (15)

  1. Device (10) for the automated bending of longitudinal profiles (1) having a longitudinal axis, the device (10) comprising a rolling mill (20) having a rolling head and a counterpressure roll, which is situated in relation to the rolling head and spaced apart therefrom on an opposite side of the longitudinal profile (1) to be reshaped, the counterpressure roll having a first roll axis (Z2), which runs essentially perpendicular to the longitudinal axis, characterized in that
    - a roll pair having at least two roll parts (13, 14), which are situated coaxially and are mounted floating in such a way that the relative axial distance between the roll parts (13, 14) is variable, is used as the counterpressure roll, and
    - controlled pressure (C, D) may be exerted on the roll parts (13, 14) in a direction parallel to the first roll axis (Z2).
  2. Device (10) according to Claim 1, characterized in that only the two roll parts (13, 14) and the rolling head exert direct pressure on the longitudinal profile (1) in a bending area of the rolling mill (20).
  3. Device (10) according to Claim 1 or 2, characterized in that the rolling head is a head (27) which has a curved active area (28), but is not implemented as a rotationally-symmetric total body per se.
  4. Device (10) according to Claim 1 or 2, characterized in that the rolling head is a roller (11) which is implemented as rotationally symmetric and is mounted as rotatable in relation to a rolling axis (Z1).
  5. Device (10) according to Claim 1 or 2, characterized in that the rolling head is a roll head (29), which comprises one or more integrated rolls (30), which are situated in an active area of the roll head (29).
  6. Device (10) according to Claim 4, characterized in that the roller (11) has a peripheral shape which is adapted to an internal shape of the longitudinal profile (1) to be bent.
  7. Device (10) according to one of the preceding claims, characterized in that the roll parts (13, 14) have a peripheral shape which is adapted to an external shape of the longitudinal profile (1) to be bent.
  8. Device (10) according to one of the preceding claims, characterized in that the device (10) comprises a Z roll (19) having a second roll axis (Y1), which runs essentially perpendicular to the first roll axis (Z2), the pressure (D) being able to be exerted on one of the roll parts (14) in that the axial location of the second roll axis (Y1) is mechanically adjusted, the axial position of the other of the roll parts (13) on the first roll axis (Z2) being fixed.
  9. Device (10) according to Claim 8, characterized in that the Z roll (19) presses against a frontal area of the roll part (14) using a peripheral area.
  10. Device (10) according to one of the preceding claims, characterized in that the device (10) comprises a first Z roll (18) having a second roll axis (Y2) and the second Z roll (19) having a third roll axis (Y1), which both run essentially perpendicular to the first roll axis (Z2), pressure (C, D) being able to be exerted on the roll parts (13, 14) by each of the Z rolls (18, 19), in that the relative axial location of the second roll axis (Y2) and the third roll axis (Y2) is mechanically adjusted.
  11. Device (10) according to one of the preceding claims, characterized in that the rolling head (11, 27, 29) and the roll parts (13, 14) used as the counterpressure roll are mounted and situated in such a way that they may be fed in relation to one another by a distance reduction, to thus exert pressure on the longitudinal profile (1) from two sides.
  12. Device (10) according to one of the preceding claims, characterized in that the longitudinal profile (1) moves through the device (10) and is reshaped into a curved profile by the interaction with the rolling head (11, 27, 29) and the roll parts (13, 14), the material flows arising on a front wall on the curve exterior side being deflected via the areas of the roll parts (13, 14) acting on lateral walls of the longitudinal profiles (1) via assigned lateral walls into a front wall on the curve interior side.
  13. Device (10) according to Claim 12, characterized in that a bending line is laid on the curve interior side of the profile (1) and a structure flow is caused from the curve exterior side in the direction toward the curve interior side.
  14. Device (10) according to one of the preceding claims, characterized in that each of the roll parts (13, 14) has an at least partially conical peripheral shape.
  15. Device (10) according to one of the preceding claims, characterized in that
    - each of the roll parts (13, 14) is rotationally symmetric in relation to the first roll axis (Z2), and
    - each of the roll parts (13, 14) has sections (13.1 - 13.3, 14.1 - 14.3) which have different peripheral diameters, the diameter preferably changing monotonously along the roll axis (Z1). I
EP06121861A 2006-10-06 2006-10-06 Apparatus for mechanically flowform bending of profiles Not-in-force EP1908536B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AT06121861T ATE414577T1 (en) 2006-10-06 2006-10-06 DEVICE FOR MACHINE FLOW BENDING OF PROFILES
EP06121861A EP1908536B1 (en) 2006-10-06 2006-10-06 Apparatus for mechanically flowform bending of profiles
DE502006002139T DE502006002139D1 (en) 2006-10-06 2006-10-06 Device for machine flow-forming bending of profiles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06121861A EP1908536B1 (en) 2006-10-06 2006-10-06 Apparatus for mechanically flowform bending of profiles

Publications (2)

Publication Number Publication Date
EP1908536A1 EP1908536A1 (en) 2008-04-09
EP1908536B1 true EP1908536B1 (en) 2008-11-19

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EP06121861A Not-in-force EP1908536B1 (en) 2006-10-06 2006-10-06 Apparatus for mechanically flowform bending of profiles

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EP (1) EP1908536B1 (en)
AT (1) ATE414577T1 (en)
DE (1) DE502006002139D1 (en)

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CN102581010A (en) * 2012-02-14 2012-07-18 北京京诚之星科技开发有限公司 Two-roll horizontal mill
DE102008046160B4 (en) * 2008-09-06 2018-02-22 Tillmann Profil Gmbh Roll forming tool for roll forming sheet metal strip, as well as apparatus for roll forming of sheet metal strip

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007043805A1 (en) * 2007-09-13 2009-03-19 Patentgesellschaft Maranatha Method and device for bending or linearly rolling profiles with axleless mini roll rollers
CN103084446A (en) * 2013-02-26 2013-05-08 昆山市天之衣精工机械设备有限公司 Pipe bending machine
CN103128145A (en) * 2013-03-05 2013-06-05 昆山市天之衣精工机械设备有限公司 Pipe bender
DE102016013672A1 (en) * 2016-11-10 2018-05-17 Technische Universität Dortmund Apparatus and method for planar or spatial bending of profiles by a rolling process
DE102022127255A1 (en) 2022-10-18 2024-04-18 Thyssenkrupp Steel Europe Ag Roll holder for use in a flow-forming machine

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Publication number Priority date Publication date Assignee Title
ES8604434A1 (en) * 1984-07-13 1986-02-01 Ormaechea Mujica Marcos Process of manufacturing brake shoes.
DE102004003681A1 (en) * 2004-01-24 2005-08-11 Klingelnberg Ag Bending device with pendulum rollers

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008046160B4 (en) * 2008-09-06 2018-02-22 Tillmann Profil Gmbh Roll forming tool for roll forming sheet metal strip, as well as apparatus for roll forming of sheet metal strip
CN102581010A (en) * 2012-02-14 2012-07-18 北京京诚之星科技开发有限公司 Two-roll horizontal mill
CN102581010B (en) * 2012-02-14 2014-08-27 北京京诚之星科技开发有限公司 Two-roll horizontal mill

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EP1908536A1 (en) 2008-04-09
ATE414577T1 (en) 2008-12-15
DE502006002139D1 (en) 2009-01-02

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