EP1908536B1 - Apparatus for mechanically flowform bending of profiles - Google Patents
Apparatus for mechanically flowform bending of profiles Download PDFInfo
- 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
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- 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.)
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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
- 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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- Bending Of Plates, Rods, And Pipes (AREA)
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Abstract
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.
In der
Eine weitere Biegemaschine ist aus der deutschen Patentanmeldung
Die
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
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.
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.
- 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.
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
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
Im Folgenden wird das Prinzip der Erfindung anhand einer ersten Ausführungsform der Erfindung erläutert. In
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
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
In
Wie in
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
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
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-
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
In
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
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
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
In
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
Details einer weiteren Ausführungsform sind in
Details noch einer weiteren Ausführungsform sind in
Details einer gegenwärtig gegenüber der in
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
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)
- 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).
- 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).
- 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.
- 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).
- 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).
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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
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 |
Family
ID=37814079
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06121861A Not-in-force EP1908536B1 (en) | 2006-10-06 | 2006-10-06 | Apparatus for mechanically flowform bending of profiles |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1908536B1 (en) |
AT (1) | ATE414577T1 (en) |
DE (1) | DE502006002139D1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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)
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 |
Family Cites Families (2)
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 |
-
2006
- 2006-10-06 DE DE502006002139T patent/DE502006002139D1/en not_active Expired - Fee Related
- 2006-10-06 EP EP06121861A patent/EP1908536B1/en not_active Not-in-force
- 2006-10-06 AT AT06121861T patent/ATE414577T1/en not_active IP Right Cessation
Cited By (3)
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 |
Also Published As
Publication number | Publication date |
---|---|
ATE414577T1 (en) | 2008-12-15 |
EP1908536A1 (en) | 2008-04-09 |
DE502006002139D1 (en) | 2009-01-02 |
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