EP0174501B1 - Method for bending section bars of metal, in particular of aluminium, with non supported webs, lips or the like - Google Patents

Method for bending section bars of metal, in particular of aluminium, with non supported webs, lips or the like Download PDF

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Publication number
EP0174501B1
EP0174501B1 EP85110004A EP85110004A EP0174501B1 EP 0174501 B1 EP0174501 B1 EP 0174501B1 EP 85110004 A EP85110004 A EP 85110004A EP 85110004 A EP85110004 A EP 85110004A EP 0174501 B1 EP0174501 B1 EP 0174501B1
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EP
European Patent Office
Prior art keywords
profile
bending
guide element
bar
rollers
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP85110004A
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German (de)
French (fr)
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EP0174501A3 (en
EP0174501A2 (en
Inventor
Walter Allenspach
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Cessione walba Machinery Ltd
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Allenspach Walter
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Filing date
Publication date
Application filed by Allenspach Walter filed Critical Allenspach Walter
Priority to AT85110004T priority Critical patent/ATE58314T1/en
Publication of EP0174501A2 publication Critical patent/EP0174501A2/en
Publication of EP0174501A3 publication Critical patent/EP0174501A3/en
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Publication of EP0174501B1 publication Critical patent/EP0174501B1/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
    • B21D7/00—Bending rods, profiles, or tubes
    • B21D7/08—Bending rods, profiles, or tubes by passing between rollers or through a curved die

Definitions

  • the invention relates to a method for bending a profile bar made of metal, in particular aluminum, the profile of which has at least one profile leg transversely to the bending plane, the profile bar being guided between at least three bending rollers arranged at an adjustable distance from one another, of which the middle bending roller relates to the profile bar two is opposite outer bending rollers, and wherein at least the one transverse to the bending plane profile leg of the profile rod is guided relative to the central bending roller by means of a guide element.
  • the profile leg of a profile rod which is located in the bending direction, is supported in a tensile zone on its inside facing the bending axis by guide rollers, whereas the profile leg, which presses against the middle bending roller, is pressed on - Its outside does not receive any support, which can lead to undesirable deformations in this pressure zone.
  • the area of the profile rod between the outer and the inner profile leg is not supported so as not to impede the rotation of the guide rollers, so that there is also a risk of deformation in this area, in particular with small bending radii and complicated profile cross sections.
  • the object of the invention is to provide a method for bending a profile bar made of metal, in particular aluminum, which allows the bending of profile bars with a comparatively complicated profile without undesired deformation of the profile shape and allows small bending radii.
  • the profile shape of the guide element is complementarily adapted to the profile shape of the profile rod on its side carrying the profile leg, and in that the profile rod is guided between the guide element and a support disk of the middle bending roller leading the profile rod on the side facing the guide element.
  • the profile is supported on both sides by the guide element and the central bending roller and thus the support disk, and an inadmissible deformation of the profile is thereby prevented.
  • roller 1 consists of the two outer rollers 1 and the middle roller 3. Both the distance of the two rollers 1 and 2 from each other and the distance of the axis 6 or roller 3 from which the axes 4, 5 of the straight lines connecting rollers 1, 2 are adjustable. If a workpiece or a profile rod 7 is now introduced in the direction X into the opening between a complementarily adapted (profile-specific) guide element 10 and support disks of the roller 3, respectively. pushed between the support disks of rollers 1, 2 and then moved in the direction of arrows X, its radius of curvature is reduced. If this operation is repeated several times, the roller 3 being displaced in the direction of the arrow Y after each passage of the workpiece 7, the radius of curvature is further reduced.
  • FIG. 2 illustrates the device with the angular support 8, which is firmly connected to a slide on which the deliverable roller 3 and the rigid bracket 9 sit, which serve as supports for the profile-specific guide element 10.
  • the workpiece 7 is guided between the guide element 10 and support disks of the roller 3, the guide element 10 being able to be prestressed in the Y direction by means of locking screws in slots 11 with the feed screw 12.
  • Fig. 3 is a sectional view of the device with a different type of workpiece or a profile rod 13 is shown. Without the complementary (profile-specific) guide element 14 adapted to the profile rod 13, the wall on the outside of the arch would be pulled inwards during bending.
  • the method according to the invention is the adaptation of the guide elements in shape and material to the respective profile shapes and materials.
  • the method allows workpieces of relatively large width or rather high free-standing walls, respectively. to bend with free-standing formations into arches or rings and to carry out the bending process continuously.
  • the device can be attached to any suitable bend resp.
  • Rolling machine can be attached.

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

Abstract

The object is achieved by dividing the bending moment acting on the central, adjustable roll (rupture on the inner edge of the section) into a tensile component and a compressive component. Seated on a tool carrier rigidly connected to the adjustable roll 3 or its carriage is a bracket (9) which carries a guiding element 10 matched to the section 7 in shape and material. By prestressing the guiding element 10 by means of the adjusting screw 12, it is possible to bring the point of action of the bending moment as close as possible to the neutral zone of the section 10. The device can be attached to any suitable bending or rolling machine. <IMAGE>

Description

Die Erfindung betrifft ein Verfahren zum Biegen einer Profilstange aus Metall, insbesondere Aluminium, deren Profil quer zur Biegeebene wenigstens einen Profilschenkel hat, wobei die Profilstange zwischen wenigstens drei mit einstellbarem Abstand voneinander angeordneten Biegerollen hindurchgeführt wird, von denen die mittlere Biegerolle bezogen auf die Profilstange zwei äußeren Biegerollen gegenüberliegt, und wobei wenigstens der eine quer zur Biegeebene verlaufende Profilschenkel der Profilstange mittels eines Führungselements relativ zu der mittleren Biegerolle geführt wird.The invention relates to a method for bending a profile bar made of metal, in particular aluminum, the profile of which has at least one profile leg transversely to the bending plane, the profile bar being guided between at least three bending rollers arranged at an adjustable distance from one another, of which the middle bending roller relates to the profile bar two is opposite outer bending rollers, and wherein at least the one transverse to the bending plane profile leg of the profile rod is guided relative to the central bending roller by means of a guide element.

Es ist allgemein bekannt, Profilstangen, welche sowohl Voll- oder Hohlprofile sein können, insbesondere solche aus Stahl oder Aluminium, die beispielsweise zu halbkreisförmigen Segmenten oder zu Ringen geformt werden sollen, zwischen mindestens drei drehenden Walzen bzw. Biegerollen hindurchzuführen, von denen vorzugsweise mindestens eine angetrieben ist. Wenn die mittlere Walze sukzessive zwischen die beiden äußeren Walzen gebracht wird, so wird auf das zu biegende Werkstück ein Druck ausgeübt, der beim Hindurchführen des Werkstückes zwischen den.Walzen dieses rundet.It is generally known to pass profile rods, which can be both solid or hollow profiles, in particular those made of steel or aluminum, which are to be formed, for example, into semicircular segments or rings, between at least three rotating rollers or bending rollers, of which preferably at least one is driven. If the middle roller is successively brought between the two outer rollers, pressure is exerted on the workpiece to be bent, which rounds the workpiece between the rollers as it is passed through.

Dieses Verfahren stellt keinerlei Probleme, wenn das zu biegende Werkstück in der Biegerichtung nicht zu breit ist oder der Biegeradius nicht zu klein ist. Wenn aber Werkstücke gebogen werden sollen, die in der Biegerichtung größere Breiten aufweisen oder kleine Biegeradien erzielt werden müssen, so wird der an der Innenseite angreifende Druck so groß, daß dort unzulässige Verformungen oder gar Zerstörung auftreten.This method poses no problems if the workpiece to be bent is not too wide in the bending direction or the bending radius is not too small. If, however, workpieces are to be bent that have larger widths in the bending direction or small bending radii have to be achieved, the pressure acting on the inside becomes so great that inadmissible deformations or even destruction occur there.

Bei dem aus der DE-U-1 335 539 bekannten Verfahren der eingangs genannten Art wird der in Biegerichtung außenliegende Profilschenkel einer Profilstange in einer Zugzone an seiner der Biegeachse zugewandten Innenseite durch Führungsrollen gestützt, wohingegen der innenliegende, an die mittlere Biegerolle andrückende Profilschenkel -an- seiner Außenseite keine Unterstützung erfährt, was zu unerwünschten Verformungen in dieser Druckzone führen kann. Der Bereich der Profilstange zwischen dem äußeren und dem inneren Profilschenkel ist nicht unterstützt, um die Drehung der Führungsrollen nicht zu behindern, so daß auch in diesem Bereich eine Verformungsgefahr besteht, insbesondere bei kleinen Biegeradien und komplizierten Profilquerschnitten.In the method of the type mentioned at the outset of DE-U-1 335 539, the profile leg of a profile rod, which is located in the bending direction, is supported in a tensile zone on its inside facing the bending axis by guide rollers, whereas the profile leg, which presses against the middle bending roller, is pressed on - Its outside does not receive any support, which can lead to undesirable deformations in this pressure zone. The area of the profile rod between the outer and the inner profile leg is not supported so as not to impede the rotation of the guide rollers, so that there is also a risk of deformation in this area, in particular with small bending radii and complicated profile cross sections.

Aufgabe der Erfindung ist es, ein Verfahren zum Biegen einer Profilstange aus Metall, insbesondere Aluminium, anzugeben, welches das Biegen von Profilstangen mit vergleichsweise kompliziertem Profil ohne unerwünschte Deformierung der Profilform erlaubt und kleine Biegeradien zuläßt.The object of the invention is to provide a method for bending a profile bar made of metal, in particular aluminum, which allows the bending of profile bars with a comparatively complicated profile without undesired deformation of the profile shape and allows small bending radii.

Die Aufgabe wird dadurch gelöst, daß die Profilform des Führungselements der profilform der Profilstange auf deren den Profilschenkel tragenden Seite komplementär angepaßt wird und daß die Profilstange zwischen dem Führungselement und einer die Profilstange auf der dem Führungselement wandten Seite führenden Stützscheibe der mittleren Biegerolle hindurchgeführt wird.The object is achieved in that the profile shape of the guide element is complementarily adapted to the profile shape of the profile rod on its side carrying the profile leg, and in that the profile rod is guided between the guide element and a support disk of the middle bending roller leading the profile rod on the side facing the guide element.

Hierdurch wird erreicht, daß das Profil von dem Führungselement und der mittleren Biegerolle und somit der Stützscheibe beidseitig gestützt wird und dadurch eine unzulässige Verformung des Profils verhindert wird.It is hereby achieved that the profile is supported on both sides by the guide element and the central bending roller and thus the support disk, and an inadmissible deformation of the profile is thereby prevented.

In den Zeichnungen ist eine Vorrichtung zur Durchführung des erfindungsgemäßen Verfahrens dargestellt.In the drawings, an apparatus for performing the method according to the invention is shown.

In den Zeichnungen zeigt:

  • Fig. 1 eine Draufsicht auf eine aus drei Walzen und einem Winkelträger bestehende Anordnung mit Konsole für ein flaches Profil aus Aluminium,
  • Fig. 2 ein Schnittbild,
  • Fig. 3 ein Schnittbild mit einem anders gearteten Profil.
In the drawings:
  • 1 is a plan view of an arrangement consisting of three rollers and an angle bracket with a bracket for a flat profile made of aluminum,
  • 2 is a sectional view,
  • Fig. 3 is a sectional view with a different type of profile.

Das in Fig. 1 gezeigte Walzaggregat bzw. die Biegevorrichtung besteht aus den beiden Außenwalzen 1, und aus der mittelwalze 3. Sowohl die Entfernung der beiden Walzen 1 und 2 voneinander als auch der Abstand der Achse 6 oder Walze 3 von der die Achsen 4, 5 der Walzen 1, 2 verbindenden Geraden sind einstellbar. Wird nun ein Werkstück bzw. eine Profilstange 7 in Richtung X in die Öffnung zwischen einem der Profilstange 7 komplementär angepaßten (profilspezifischen) Führungselement 10 und Stützscheiben der Walze 3 eingebracht, resp. zwischen die Stützscheiben der Walzen 1, 2 geschoben und dann in Richtung der Pfeile X bewegt, so verkleinert sich sein Krümmungsradius. Bei mehrmaliger Wiederholung dieses Arbeitsganges, wobei nach jedem Durchgang des Werkstückes 7 die Walze 3 in Richtung des Pfeiles Y verschoben wird, verkleinert sich der Krümmungsradius weiter. Ohne das Führungselement 10 würde die in Richtung Y wirkende Druckkraft auf das profil dieses an der Innenkante deformieren oder gar zerstören. Durch die Aufteilung dieser Druckkraft in eine Zug- und eine Druckkomponente, welche dank dem profilspezifischen Führungselement 10 nahe der neutralen Zone angreift, kann das Profil weitergehend gebogen werden.1 consists of the two outer rollers 1 and the middle roller 3. Both the distance of the two rollers 1 and 2 from each other and the distance of the axis 6 or roller 3 from which the axes 4, 5 of the straight lines connecting rollers 1, 2 are adjustable. If a workpiece or a profile rod 7 is now introduced in the direction X into the opening between a complementarily adapted (profile-specific) guide element 10 and support disks of the roller 3, respectively. pushed between the support disks of rollers 1, 2 and then moved in the direction of arrows X, its radius of curvature is reduced. If this operation is repeated several times, the roller 3 being displaced in the direction of the arrow Y after each passage of the workpiece 7, the radius of curvature is further reduced. Without the guide element 10, the compressive force acting in the direction Y on the profile would deform or even destroy it on the inner edge. By dividing this compressive force into a tensile and a compressive component which, thanks to the profile-specific guide element 10, engages near the neutral zone, the profile can be bent further.

Der in Fig. 2 gezeigte Schnitt veranschaulicht die Vorrichtung mit dem Winkelträger 8, welcher fest mit einem Schlitten verbunden ist, auf welchem die zustellbare Walze 3 und die starre Konsole 9 sitzen, welche als Träger für das profilspezifische Führungselement 10 dienen. Das Werkstück 7 ist zwischen dem Führungselement 10 und Stützscheiben der Walze 3 geführt, wobei das Führungselement 10 durch Feststellschrauben in Schlitzen 11 in Richtung Y mit der Zustellschraube 12 vorgespannt werden kann.The section shown in FIG. 2 illustrates the device with the angular support 8, which is firmly connected to a slide on which the deliverable roller 3 and the rigid bracket 9 sit, which serve as supports for the profile-specific guide element 10. The workpiece 7 is guided between the guide element 10 and support disks of the roller 3, the guide element 10 being able to be prestressed in the Y direction by means of locking screws in slots 11 with the feed screw 12.

Dadurch kann der.Angriffspunkt in die neutrale Zone des Werkstücks gebracht werden.This allows the point of attack to be brought into the neutral zone of the workpiece.

In Fig. 3 ist ein Schnittbild der Vorrichtung mit einem andersartigen Werkstück bzw. einer Profilstange 13 dargestellt. Ohne das der Profilstange 13 komplementär angepaßte (profilspezifische) Führungselement 14 würde die Wandung an der Bogenaußenseite beim Biegen gegen innen gezogen werden.In Fig. 3 is a sectional view of the device with a different type of workpiece or a profile rod 13 is shown. Without the complementary (profile-specific) guide element 14 adapted to the profile rod 13, the wall on the outside of the arch would be pulled inwards during bending.

Wesentlich für das Arbeiten mit dem erfindungsgemäßen Verfahren ist die Anpassung der Führungselemente in Form und Material an die jeweiligen Profilformen und -materialien.Essential for working with the erfin The method according to the invention is the adaptation of the guide elements in shape and material to the respective profile shapes and materials.

Das Verfahren erlaubt es, Werkstücke auch relativ großer Breite oder ziemlich hoher freistehender Wandungen resp. mit freistehenden Ausformungen zu Bögen oder Ringen zu biegen und den Biegeprozeß kontinuierlich durchzuführen.The method allows workpieces of relatively large width or rather high free-standing walls, respectively. to bend with free-standing formations into arches or rings and to carry out the bending process continuously.

Die Vorrichtung kann an jeder geeigneten Biege
resp.The device can be attached to any suitable bend
resp.

Walzmaschine angebracht werden.Rolling machine can be attached.

Claims (1)

  1. A method of bending a bar (7; 13) of metal, in particular of aluminium, the profile of which has at least one profile shank disposed transversely across the bending plane, in which respect the bar is guided between at least three bending rollers (1, 2, 3), arranged at an adjustable distance from one another, of which the middle bending roller (3) relative to the bar (7; 13) is disposed opposite two outer bending rollers (1, 2), and whereby at least the one profile shank, disposed transversely to the bending plane, is guided by means of a guide element (10; 14) relative to the middle bending roller (3), characterised in that the profile shape of the guide element (10; 14) is complementarily matched with the profile form of the bar (7; 13) on the side thereof supporting the profile shank, and that the bar (7; 13) is guided between the guide element (10; 14) and a guiding support disc of the middle bending roller (3), which disc is at that side of the bar (7; 13) which the guide element (10; 14) faces.
EP85110004A 1984-09-12 1985-08-08 Method for bending section bars of metal, in particular of aluminium, with non supported webs, lips or the like Expired - Lifetime EP0174501B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85110004T ATE58314T1 (en) 1984-09-12 1985-08-08 PROCESS FOR ROUNDING METAL PROFILE BARS, ESPECIALLY ALUMINUM WITH UNSUPPORTED BARS, LIPS OR SIMILAR FORMATIONS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH4346/84 1984-09-12
CH4346/84A CH664101A5 (en) 1984-09-12 1984-09-12 METHOD AND DEVICE FOR ROUNDING METAL PROFILE BARS, ESPECIALLY ALUMINUM.

Publications (3)

Publication Number Publication Date
EP0174501A2 EP0174501A2 (en) 1986-03-19
EP0174501A3 EP0174501A3 (en) 1986-11-12
EP0174501B1 true EP0174501B1 (en) 1990-11-14

Family

ID=4274380

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85110004A Expired - Lifetime EP0174501B1 (en) 1984-09-12 1985-08-08 Method for bending section bars of metal, in particular of aluminium, with non supported webs, lips or the like

Country Status (4)

Country Link
EP (1) EP0174501B1 (en)
AT (1) ATE58314T1 (en)
CH (1) CH664101A5 (en)
DE (1) DE3580553D1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102189160B (en) * 2011-04-02 2016-07-06 长治钢铁（集团）锻压机械制造有限公司 The channel steel lateral bending device of type bender
CN102974665A (en) * 2012-10-16 2013-03-20 江苏华阳金属管件有限公司 Elbow forming device
CN105251831B (en) * 2015-09-21 2017-05-03 江苏大学 Adjustable deformation preventing device for angle iron bending
CN106424361B (en) * 2016-10-19 2018-05-18 中国人民解放军63926部队 A kind of aluminium alloy bone row and the bending machine die and its bending method of edge sealing

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1335539U (en) *
CH613883A5 (en) * 1977-04-29 1979-10-31 Haeusler Christian Ag Multi-roll machine for bending sectional bars and a method for its operation
US4117702A (en) * 1977-06-06 1978-10-03 The Boeing Company Rolling machines for contouring tapered structural members

Also Published As

Publication number Publication date
DE3580553D1 (en) 1990-12-20
EP0174501A3 (en) 1986-11-12
CH664101A5 (en) 1988-02-15
ATE58314T1 (en) 1990-11-15
EP0174501A2 (en) 1986-03-19

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