EP1574267B1 - Biegemaschine - Google Patents

Biegemaschine Download PDF

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Publication number
EP1574267B1
EP1574267B1 EP05005388A EP05005388A EP1574267B1 EP 1574267 B1 EP1574267 B1 EP 1574267B1 EP 05005388 A EP05005388 A EP 05005388A EP 05005388 A EP05005388 A EP 05005388A EP 1574267 B1 EP1574267 B1 EP 1574267B1
Authority
EP
European Patent Office
Prior art keywords
bending
bending machine
bent
machine according
parallelograms
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
EP05005388A
Other languages
English (en)
French (fr)
Other versions
EP1574267A1 (de
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
Original Assignee
Dako Werk Dowidat KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dako Werk Dowidat KG filed Critical Dako Werk Dowidat KG
Publication of EP1574267A1 publication Critical patent/EP1574267A1/de
Application granted granted Critical
Publication of EP1574267B1 publication Critical patent/EP1574267B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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 invention relates to a bending machine for bending tabs, sheets, profiles, round material and thick-walled pipe according to the preamble of claim 1.
  • a bending machine with two clamps which is constructed mirror-symmetrically to its central axis and has lifting elements, which are arranged in the form of two parallelograms.
  • the parallelograms change their internal angles during the bending process, being synchronized with a pair of operatively engaged tooth segments.
  • a disadvantage of this arrangement is that the bending machine can not be used from the outset for a variety of materials and angles, but must first be laboriously rebuilt. This requires time and increased personnel costs, so that the machine is impractical just in various different applications, such as those found in workshops.
  • the object of the invention is therefore to provide a bending machine, which can be quickly and easily meet a wide variety of applications. This will solved by the special features of the characterizing part of claim 1, which have the following special significance.
  • the bending machine has a second pair of interacting with each other toothed segments, which is arranged on the two actuating levers and serves to synchronize them. This makes it possible to align the terminals depending on the application to each other and still perform the processing of the workpiece using the operating lever.
  • the bending machine exerts a pure bending moment on the material in order to be able to bend it in an arbitrary radius.
  • 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', respectively.
  • 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.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)

Description

  • Die Erfindung betrifft eine Biegemaschine für das Biegen von Laschen, Blechen, Profilen, rundem Material und dickwandigem Rohr gemäß dem Oberbegriff des Anspruches 1.
  • Aus der US 4,798,073 ist eine Biegemaschine mit zwei Klemmen bekannt, welche spiegelsymmetrisch zu ihrer Mittelachse aufgebaut ist und Hebeelemente aufweist, welche in Form von zwei Parallelogrammen angeordnet sind. Die Parallelogramme verändern während des Biegevorgangs ihre Innenwinkel, wobei sie mit einem Paar von in Wirkverbindung stehenden Zahnsegmenten synchronisiert werden. Nachteilig bei dieser Anordnung ist, dass die Biegemaschine nicht von vornherein für verschiedenste Materialien und Winkel verwendet werden kann, sondern zunächst umständlich umgebaut werden muss. Dies erfordert Zeit und einen erhöhten Personalaufwand, so dass die Maschine gerade bei verschiedenen unterschiedlichen Anwendungsfällen, wie sie beispielsweise in Werkstätten vorkommen, unpraktisch ist.
  • Aufgabe der Erfindung ist es daher, eine Biegemaschine zu schaffen, welche schnell und einfach unterschiedlichsten Anwendungsfällen gerecht werden kann. Dies wird durch die besonderen Merkmale des kennzeichnenden Teils von Anspruch 1 gelöst, denen folgende besondere Bedeutung zukommt.
  • Die Biegemaschine verfügt über ein zweites Paar von miteinander in Wirkverbindung stehenden Zahnsegmenten, welches an den beiden Betätigungshebeln angeordnet ist und zu deren Synchronisierung dient. Hierdurch ist es möglich, die Klemmen je nach Anwendungsfall zueinander auszurichten und trotzdem mit Hilfe der Betätigungshebel die Bearbeitung des Werkstückes durchzuführen. Hierbei übt die Biegemaschine ein reines Biegemoment auf das Material aus, um dieses in einem willkürlichen Radius biegen zu können.
    • Text: Abbildung 2
  • Auf dieser Seite sehen wir das Prinzip der Biegemaschine in drei Positionen.
  • In Abbildung 2-A sehen wir, dass die Maschine aus zwei symmetrischen Parallelogrammen besteht.
  • Das Parallelogramm A, B, C, D hat einen festen Drehpunkt F.
  • Das Parallelogramm A', B', C', D' hat einen festen Drehpunkt F'.
  • Der Synchronisierungsmechanismus zwischen den zwei Armen A und A' besteht aus den Zahnsegmenten, die ein Bestandteil von Arm A bzw. A' sind.
  • Die beiden Zahnsegmente greifen ineinander ein.
  • Die Klemmen H und H' können sich frei nach rechts und links bewegen, sind jedoch zueinander symmetrisch synchronisiert.
  • Die gesamte Maschine ist in Bezug auf Achse S symmetrisch.
  • Alle Drehpunkte sind so gelagert, dass eine minimale Reibung entsteht.
  • Die Klemmen H und H' sind fest auf den Armen D bzw. D' montiert.
  • 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.
  • 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).
  • Durch Ausübung dieses reinen Biegemoments wird das Produkt einen sauberen Radius annehmen.
  • 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.
  • Dieses Zahnsegment wurde in Abbildung 2-A weggelassen, da sonst die Zahnsegmente von Hebel A und A' nicht sichtbar wären.

Claims (5)

  1. Biegemaschine zum Biegen von Laschen, Blechen, Profilen, rundem Material und dickwandigem Rohr,
    wobei die Biegemaschine spiegelsymmetrisch zu ihrer Mittelachse (S) aufgebaut ist,
    mit Klemmen (H, H'), in denen das zu biegende Werkstück während des Biegevorgangs gehaltert wird,
    mit Hebelelementen, welche in Form von zwei Parallelogrammen (ABCD, A'B'C'D') angeordnet sind, die während des Biegevorgangs ihre Innenwinkel ändern, wobei jedes der Parallelogramme ein Hebelelement (C, C') aufweist, welches als Betätigungshebel fungiert,
    mit einem Paar von in Wirkverbindung stehenden Zahnsegmenten, durch welches die Parallelogramme (ABCD, A'B'C'D') so synchronisiert werden, dass die Biegemaschine während des gesamten Biegevorgangs spiegelsymmetrisch zur Mittelachse (S) bleibt,
    wobei bei Betätigung mittels der Betätigungshebel durch die Biegemaschine ein reines Biegemoment auf das zu biegende Werkstück ausübbar ist,
    dadurch gekennzeichnet,
    dass noch ein zweites Paar von miteinander in Wirkverbindung stehenden Zahnsegmenten vorgesehen ist, welches an den beiden Betätigungshebeln (C, C') angeordnet ist und zu deren Synchronisierung dient.
  2. Biegemaschine nach Anspruch 1, dadurch gekennzeichnet, dass die Klemmen (H, H') frei seitlich verschiebbar, jedoch miteinander synchronisiert sind.
  3. Biegemaschine nach einem der Ansprüche 1. oder 2, dadurch gekennzeichnet, dass Profile gebogen werden können, die symmetrisch zur Biegefläche sind.
  4. Biegemaschine nach Anspruch 3, dadurch gekennzeichnet, dass ein großer Winkel von bis zu 200° herstellbar ist.
  5. Biegemaschine nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass alle Drehpunkte so gelagert sind, dass minimale Reibung entsteht.
EP05005388A 2004-03-11 2005-03-11 Biegemaschine Not-in-force EP1574267B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1025692A NL1025692C1 (nl) 2004-03-11 2004-03-11 Buigmachine voor het buigen van strippen, platen, profielen, rond materiaal en dikwandige buis.
NL1025692 2004-03-11

Publications (2)

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

Family

ID=34825253

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05005388A Not-in-force EP1574267B1 (de) 2004-03-11 2005-03-11 Biegemaschine

Country Status (4)

Country Link
EP (1) EP1574267B1 (de)
AT (1) ATE381971T1 (de)
DE (1) DE502005002325D1 (de)
NL (1) NL1025692C1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108453159A (zh) * 2018-04-11 2018-08-28 盐城中自科技有限公司 一种换热器折弯机构及折弯方法

Family Cites Families (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
DE3544056A1 (de) * 1985-12-13 1987-06-25 Helmut Dischler Biegemaschine
JPH0818072B2 (ja) * 1994-02-23 1996-02-28 泰太郎 山本 板金加工機

Also Published As

Publication number Publication date
NL1025692C1 (nl) 2005-09-13
EP1574267A1 (de) 2005-09-14
ATE381971T1 (de) 2008-01-15
DE502005002325D1 (de) 2008-02-07

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