EP1574267A1 - Bending press - Google Patents

Bending press Download PDF

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Publication number
EP1574267A1
EP1574267A1 EP05005388A EP05005388A EP1574267A1 EP 1574267 A1 EP1574267 A1 EP 1574267A1 EP 05005388 A EP05005388 A EP 05005388A EP 05005388 A EP05005388 A EP 05005388A EP 1574267 A1 EP1574267 A1 EP 1574267A1
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EP
European Patent Office
Prior art keywords
bending
bending machine
product
machine according
bent
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Granted
Application number
EP05005388A
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German (de)
French (fr)
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EP1574267B1 (en
Inventor
Nachum Zabar
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dako Werk Dowidat KG
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Dako Werk Dowidat KG
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Publication of EP1574267A1 publication Critical patent/EP1574267A1/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
    • B21D7/02—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment
    • B21D7/024—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment by a swinging forming member
    • B21D7/025—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment by a swinging forming member and pulling or pushing the ends of the work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • 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
    • B21D11/20—Bending sheet metal, not otherwise provided for

Definitions

  • the machine exerts a pure bending moment on the material that enters the terminals H and H 'is clamped to bend it at an arbitrary radius.
  • Figure 1-A shows the product before preforming, which is clamped in both clamps is.
  • Figure 1-B shows the bent material when the clamps are 60 degrees apart are turned.
  • Figure 1-C shows the bent product when the clamps are 120 degrees apart are turned.
  • Figure 1-D shows the bent product when the clamps are 180 degrees apart are turned.
  • the clamps H and H ' are free from each other and towards each other in direction X. move.
  • the parallelogram A, B, C, D has a fixed pivot F.
  • the parallelogram A ', B', C ', D' has a fixed pivot point F '.
  • the synchronization mechanism between the two arms A and A ' consists of the tooth segments, which are a part of arm A, and A '.
  • the two toothed segments engage each other.
  • the terminals H and H ' can move freely to the right and left, but are synchronized symmetrically to each other.
  • the entire machine is symmetrical with respect to axis S.
  • the clamps H and H ' are fixedly mounted on the arms D and D' respectively.
  • This page shows the bending process in 4 steps.
  • Figure 3-A shows the system with the material clamped for deformation.
  • Figure 3-B shows the system with the clamped material and a deformation of 30 degrees.
  • Figure 3-C shows the system with clamped material and deformation of 60 degrees.
  • Figure 3-D shows the system with clamped material and deformation of 90 degrees.
  • the protruding part of the product O, which is clamped in clamp H ', is static.
  • the starting point of the bending machine consists of two parallelograms marked with G, J, I, K and denoted by N, M, K, L.
  • the element K connects the two parallelograms at an angle of approximately 90 degrees.
  • the first parallelogram marked G, J, I, K, transmits the momentum of Arm J on the element K and can move completely freely in the direction of Q-R.
  • the parallelogram marked N, M, K, L, transmits the moment of element K in the arm N and can move completely freely in the direction of S-T.
  • the clamp H On the arm N, the clamp H is firmly mounted.
  • the direction of movement (Q-R and U-T) of the two parallelograms remains with each other about 90 degrees.
  • terminal H experiences only a pure bending moment, starting from a negligible friction in all pivot points.
  • the prerequisite in this bending process is that the product to be bent over the length to be bent has a constant cross-section.
  • the angle P made by the arm J about point F corresponds to the angle made by the clamp H.
  • the radius the product receives depends on the distance between the two clamps H and H 'in the home position and the angle made by clamp H. Since both the angle va and the distance between the two terminals (H and H ') is infinitely variable, any radius and any bending angle is possible.
  • the task of the construction with several parallelograms is the one, a pure bending moment from the fixed terminal H 'to the movable terminal H.

Abstract

The machine for bending metal exercises a clean bending moment on the two ends of the area to be bent. It does not need a template to produce the desired radius. In some versions, one side of the product is tensioned statically and in others, both sides to be bent undergo the bending movement. Both the control levers and bending arms are symmetrical and synchronized. The radius can be set by adjusting the angle between the arms.

Description

Text: Abbildung 1Text: Figure 1

Es betrifft hier eine Biegemaschine für das Biegen von Laschen, Vierkanteisen, Rohr und anderen Profilen, die einen konsistenten Querschnitt haben.It concerns here a bending machine for the bending of tabs, four-cornered iron, pipe and other profiles that have a consistent cross-section.

Die Maschine übt ein reines Biegemoment auf das Material aus, das in die Klemmen H und H' eingespannt wird, um dieses in einem willkürlichen Radius biegen zu können.The machine exerts a pure bending moment on the material that enters the terminals H and H 'is clamped to bend it at an arbitrary radius.

Auf den Zeichnungen 1-A bis 1-D wird der Biegeprozess in vier Schritten gezeigt.Referring to Figures 1-A to 1-D, the bending process is shown in four steps.

Abbildung 1-A zeigt das Produkt vor der Vorformung, welches in beide Klemmen eingespannt ist.Figure 1-A shows the product before preforming, which is clamped in both clamps is.

Abbildung 1-B weist das gebogene Material auf, wenn die Klemmen 60 Grad zueinander gedreht sind.Figure 1-B shows the bent material when the clamps are 60 degrees apart are turned.

Abbildung 1-C weist das gebogene Produkt auf, wenn die Klemmen 120 Grad zueinander gedreht sind.Figure 1-C shows the bent product when the clamps are 120 degrees apart are turned.

Abbildung 1-D weist das gebogene Produkt auf, wenn die Klemmen 180 Grad zueinander gedreht sind.Figure 1-D shows the bent product when the clamps are 180 degrees apart are turned.

Die Klemmen H und H' können sich frei voneinander und aufeinander zu in Richtung X bewegen.The clamps H and H 'are free from each other and towards each other in direction X. move.

Text: Abbildung 2Text: Figure 2

Auf dieser Seite sehen wir das Prinzip der Biegemaschine in drei Positionen.On this page we see the principle of the bending machine in three positions.

In Abbildung 2-A sehen wir, dass die Maschine aus zwei symmetrischen Parallelogrammen besteht.In Figure 2-A we see that the machine consists of two symmetrical parallelograms consists.

Das Parallelogramm A, B, C, D hat einen festen Drehpunkt F.The parallelogram A, B, C, D has a fixed pivot F.

Das Parallelogramm A', B', C', D' hat einen festen Drehpunkt F'.The parallelogram A ', B', C ', D' has a fixed pivot point F '.

Der Synchronisierungsmechanismus zwischen den zwei Armen A und A' besteht aus den Zahnsegmenten, die ein Bestandteil von Arm A, bzw. A' sind.The synchronization mechanism between the two arms A and A 'consists of the tooth segments, which are a part of arm A, and A '.

Die beiden Zahnsegmente greifen ineinander ein. The two toothed segments engage each other.

Die Klemmen H und H' können sich frei nach rechts und links bewegen, sind jedoch zueinander symmetrisch synchronisiert.The terminals H and H 'can move freely to the right and left, but are synchronized symmetrically to each other.

Die gesamte Maschine ist in Bezug auf Achse S symmetrisch.The entire machine is symmetrical with respect to axis S.

Alle Drehpunkte sind so gelagert, dass eine minimale Reibung entsteht.All pivot points are mounted so that minimal friction occurs.

Die Klemmen H und H' sind fest auf den Armen D bzw. D' montiert.The clamps H and H 'are fixedly mounted on the arms D and D' respectively.

Die auf Arm C und C' ausgeübte Winkelverschiebung verursacht über die Arme A und B bzw. A' und B' eine gleiche Winkelverschiebung auf den Klemmen H und H', was in Abbildung 2-B zu sehen ist.The angular displacement exerted on arm C and C 'causes over arms A and B and A 'and B' equal angular displacement on the terminals H and H ', which in Figure 2-B can be seen.

Falls die Arme C und C' bewegt werden, ist das Ergebnis, dass ein reines Biegemoment auf das zwischen den Klemmen H und H' eingespannte Produkt ausgeübt wird (siehe auch Abbildung 1-C).If the arms C and C 'are moved, the result is that a pure bending moment is applied to the clamped between the terminals H and H 'product (see also Figure 1-C).

Durch Ausübung dieses reinen Biegemoments wird das Produkt einen sauberen Radius annehmen.By applying this pure bending moment, the product becomes a clean radius accept.

In Abbildung 2-C ist zu sehen, dass ein integriertes Zahnsegment an den Hebeln C und C' dafür sorgt, dass die Bewegungen dieser Hebel synchronisiert sind.In Figure 2-C it can be seen that an integrated sector gear on the levers C and C 'ensures that the movements of these levers are synchronized.

Dieses Zahnsegment wurde in Abbildung 2-A weggelassen, da sonst die Zahnsegmente von Hebel A und A' nicht sichtbar wären.This sector has been omitted in Figure 2-A, otherwise the tooth segments would not be visible from levers A and A '.

Text Abbildung 3Text Figure 3

Falls man ein langes Produkt biegen möchte, z. B. ein langes Hydraulikrohr, ist es wichtig, dass ein Teil des Produktes statisch ist.If you want to bend a long product, z. As a long hydraulic pipe, it is important that part of the product is static.

Eine grundsätzliche Lösung hierfür wird in Abbildung 3 beschrieben.A basic solution for this is described in Figure 3.

Auf dieser Seite wird der Biegeprozess in 4 Schritten abgebildet.This page shows the bending process in 4 steps.

Abbildung 3-A zeigt das System mit dem für die Verformung eingespannten Material.Figure 3-A shows the system with the material clamped for deformation.

Abbildung 3-B zeigt das System mit dem eingespannten Material und eine Verformung von 30 Grad.Figure 3-B shows the system with the clamped material and a deformation of 30 degrees.

Abbildung 3-C zeigt das System mit eingespanntem Material und einer Verformung von 60 Grad. Figure 3-C shows the system with clamped material and deformation of 60 degrees.

Abbildung 3-D zeigt das System mit eingespanntem Material und eine Verformung von 90 Grad.Figure 3-D shows the system with clamped material and deformation of 90 degrees.

Der Drehpunkt F des Arms J und die Klemme H' sind Festpunkte.The pivot point F of the arm J and the clamp H 'are fixed points.

Der vorstehende Teil des Produkts O, welches in Klemme H' eingespannt ist, ist statisch.The protruding part of the product O, which is clamped in clamp H ', is static.

Der Ausgangspunkt der Biegemaschine besteht aus zwei Parallelogrammen, gekennzeichnet mit G, J, I, K und gekennzeichnet mit N, M, K, L.The starting point of the bending machine consists of two parallelograms marked with G, J, I, K and denoted by N, M, K, L.

Das Element K verbindet die zwei Parallelogramme in einem Winkel von ca. 90 Grad.The element K connects the two parallelograms at an angle of approximately 90 degrees.

Das erste Parallelogramm, gekennzeichnet mit G, J, I, K übertragt das Moment von Arm J auf das Element K und kann sich vollständig frei in Richtung Q-R bewegen.The first parallelogram, marked G, J, I, K, transmits the momentum of Arm J on the element K and can move completely freely in the direction of Q-R.

Das Parallelogramm, gekennzeichnet mit N, M, K, L, überträgt das Moment von Element K auf dem Arm N und kann sich vollständig frei in Richtung S-T bewegen.The parallelogram, marked N, M, K, L, transmits the moment of element K in the arm N and can move completely freely in the direction of S-T.

Auf dem Arm N ist die Klemme H fest montiert.On the arm N, the clamp H is firmly mounted.

Die Bewegungsrichtung (Q-R und U-T) der zwei Parallelogramme untereinander bleibt ca. 90 Grad.The direction of movement (Q-R and U-T) of the two parallelograms remains with each other about 90 degrees.

Das Moment wird dadurch von Arm J auf Klemme H übertragen, welche sozusagen frei ist, sich in der horizontalen Fläche zu bewegen.The moment is thereby transferred from arm J to terminal H, which releases, so to speak is to move in the horizontal plane.

Hierdurch erfährt Klemme H ausschließlich ein reines Biegemoment, ausgehend von einer zu vernachlässigenden Reibung in allen Drehpunkten.As a result, terminal H experiences only a pure bending moment, starting from a negligible friction in all pivot points.

Wenn auf das Produkt zwischen den beiden Klemmen (H und H') ein reines Biegemoment ausgeübt wird, wird sich das Produkt gleichmäßig verformen (biegen) mit einem gleichmäßigen Radius.If on the product between the two terminals (H and H ') a pure bending moment is exercised, the product will deform evenly (bend) with one uniform radius.

Die Voraussetzung bei diesem Biegeprozess ist, dass das zu biegende Produkt über die zu biegende Länge einen konstanten Querschnitt hat.The prerequisite in this bending process is that the product to be bent over the length to be bent has a constant cross-section.

Der Winkel P, den Arm J um Punkt F macht, entspricht dem Winkel, den die Klemme H macht.
Der Radius, den das Produkt erhält, hängt von dem Abstand zwischen den zwei Klemmen H und H' in der Ausgangsposition sowie dem Winkel ab, den Klemme H macht.
Da sowohl der Winkel va als auch der Abstand zwischen den zwei Klemmen (H und H') stufenlos veränderlich ist, ist jeder Radius und jeder Biegewinkel möglich. The angle P made by the arm J about point F corresponds to the angle made by the clamp H.
The radius the product receives depends on the distance between the two clamps H and H 'in the home position and the angle made by clamp H.
Since both the angle va and the distance between the two terminals (H and H ') is infinitely variable, any radius and any bending angle is possible.

Da ein Parallelogramm, bestehend aus zwei Armen, eine praktische Winkelbegrenzung von ca. 100 Grad hat, wird in der Praxis eine drei- (oder mehr) -armige Konstruktion verwendet (z. B. ein "Schmidt Offset Coupling"), um zu einem größeren Biegewinkel zu gelangen. Das Funktionsprinzip bleibt bei Verwendung einer solchen Alternative identisch.Since a parallelogram, consisting of two arms, a practical angle limitation of about 100 degrees, in practice becomes a three (or more) -arm construction used (eg, a "Schmidt Offset Coupling") to provide a larger bend angle reach. The operating principle remains the same when using such an alternative.

Die Aufgabe der Konstruktion mit mehreren Parallelogrammen ist die, ein reines Biegemoment von der festen Klemme H' auf die bewegliche Klemme H zu übertragen.The task of the construction with several parallelograms is the one, a pure bending moment from the fixed terminal H 'to the movable terminal H.

Claims (8)

Eine Biegemaschine, die durch mechanische Parallelogramme ein reines Biegemoment auf ein Produkt ausüben kann, sodass jenes Produkt mit einem gleichmäßigen Radius zwischen den zwei Klemmen gebogen wird.A bending machine, which by mechanical parallelograms a pure bending moment on a product, so that product with a uniform radius between the two terminals is bent. Eine Biegemaschine für das Biegen von Profilen, die symmetrisch zur Biegefläche sind.A bending machine for bending profiles that are symmetrical to the bending surface are. Eine Biegemaschine gemäß Punkt 2, die einen großen Winkel bis ca. 200 Grad herstellen kann.A bending machine according to point 2, which has a large angle up to about 200 degrees can produce. Durch Verwendung von 2 oder mehreren Parallelogrammen wird in dieser Biegemaschine ein reines Biegemoment auf die zwei Klemmen übertragen.By using 2 or more parallelograms in this bending machine a pure bending moment transmitted to the two terminals. Eine Biegemaschine gemäß Punkt 3, jedoch mit mehreren Parallelogrammarmen, z. B. in Form einer "Schmidt Offset Coupling", um eine größere Winkelverschiebung der Klemme zu ermöglichen.A bending machine according to point 3, but with several parallelogram arms, z. B. in the form of a "Schmidt Offset Coupling" to a larger angular displacement to allow the terminal. Alle Drehpunkte sind so gelagert, dass minimale Reibung entsteht.All pivot points are mounted so that minimal friction occurs. Eine Biegemaschine gemäß 5, jedoch ist eine Klemme fest aufgestellt und die andere kann sich frei in einer Fläche bewegen.A bending machine according to FIG. 5, however, a clamp is fixed and the others can move freely in a surface. Eine Biegemaschine gemäß 4, wobei die Bewegung der zwei Klemmen symmetrisch und synchronisiert ist.A bending machine according to 4, wherein the movement of the two clamps is symmetrical and is synchronized.
EP05005388A 2004-03-11 2005-03-11 Bending press Not-in-force EP1574267B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1025692 2004-03-11
NL1025692A NL1025692C1 (en) 2004-03-11 2004-03-11 Bending machine for bending strips, plates, profiles, around material and thick-walled pipe.

Publications (2)

Publication Number Publication Date
EP1574267A1 true EP1574267A1 (en) 2005-09-14
EP1574267B1 EP1574267B1 (en) 2007-12-26

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Application Number Title Priority Date Filing Date
EP05005388A Not-in-force EP1574267B1 (en) 2004-03-11 2005-03-11 Bending press

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EP (1) EP1574267B1 (en)
AT (1) ATE381971T1 (en)
DE (1) DE502005002325D1 (en)
NL (1) NL1025692C1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108453159A (en) * 2018-04-11 2018-08-28 盐城中自科技有限公司 A kind of heat exchanger bending mechanism and bending method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3952572A (en) * 1974-01-23 1976-04-27 Case Western Reserve University Beam bender
US4798073A (en) * 1985-12-13 1989-01-17 Helmut Dischler Bending machine for bending bars, channels, sections and the like
JPH07232217A (en) * 1994-02-23 1995-09-05 Taitaro Yamamoto Sheet metal machine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3952572A (en) * 1974-01-23 1976-04-27 Case Western Reserve University Beam bender
US4798073A (en) * 1985-12-13 1989-01-17 Helmut Dischler Bending machine for bending bars, channels, sections and the like
JPH07232217A (en) * 1994-02-23 1995-09-05 Taitaro Yamamoto Sheet metal machine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1996, no. 01 31 January 1996 (1996-01-31) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108453159A (en) * 2018-04-11 2018-08-28 盐城中自科技有限公司 A kind of heat exchanger bending mechanism and bending method

Also Published As

Publication number Publication date
EP1574267B1 (en) 2007-12-26
NL1025692C1 (en) 2005-09-13
ATE381971T1 (en) 2008-01-15
DE502005002325D1 (en) 2008-02-07

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