EP1459816B1 - Bending device with multi-level bending tool, clamping jaw unit and sliding support unit for such a bending device - Google Patents

Bending device with multi-level bending tool, clamping jaw unit and sliding support unit for such a bending device Download PDF

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Publication number
EP1459816B1
EP1459816B1 EP03005461A EP03005461A EP1459816B1 EP 1459816 B1 EP1459816 B1 EP 1459816B1 EP 03005461 A EP03005461 A EP 03005461A EP 03005461 A EP03005461 A EP 03005461A EP 1459816 B1 EP1459816 B1 EP 1459816B1
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EP
European Patent Office
Prior art keywords
bending
clamping jaw
support units
transverse direction
sliding rail
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
EP03005461A
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German (de)
French (fr)
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EP1459816A1 (en
Inventor
Frank Schmauder
Winfried Richter
Thilo Eichenbrenner
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.)
Trumpf Werkzeugmaschinen SE and Co KG
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Trumpf Werkzeugmaschinen SE and Co KG
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Publication date
Application filed by Trumpf Werkzeugmaschinen SE and Co KG filed Critical Trumpf Werkzeugmaschinen SE and Co KG
Priority to EP03005461A priority Critical patent/EP1459816B1/en
Priority to DE50304940T priority patent/DE50304940D1/en
Priority to ES03005461T priority patent/ES2272828T3/en
Priority to US10/800,589 priority patent/US7024903B2/en
Publication of EP1459816A1 publication Critical patent/EP1459816A1/en
Application granted granted Critical
Publication of EP1459816B1 publication Critical patent/EP1459816B1/en
Anticipated expiration legal-status Critical
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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
    • B21D7/021—Construction of forming members having more than one groove

Definitions

  • the invention relates to a bending device for a bending machine for bending rod and / or rod-like workpieces, in particular of tubes, with at least one multi-level bending tool on which a plurality of bending levels superimposed in the direction of a bending axis is formed.
  • one bending shape and at least one of the relevant bending shape are associated and, in the transverse direction of the bending axis, at least one bending shape near Functional and at least one bending position remote non-functional position movable jaw provided, wherein the jaw or clamping jaws are effectively mounted on the side facing away from the bending or forms on a movable with the jaws or in the transverse direction of the bending axis jaw support in the transverse direction of the bending axis.
  • a bending mold and at least one slide rail for supporting the workpiece in the workpiece transverse direction are provided for each bending level, wherein the slide rail or slide rails are effectively mounted on the side facing away from the workpiece on a slide rail support in the workpiece transverse direction.
  • the invention also relates to jaw support units and slide rail support units for bending devices of the above type.
  • the clamping jaw support or the slide rail support of the multi-level bending tool is modular.
  • the modular design in the intended form allows to design the jaw support or the bending rail support bending level for bending level and thereby to tailor the jaw support or the sliding rail support as a whole in its configuration to the requirements of the concrete processing case.
  • clamping jaw or slide support units By appropriate combination of clamping jaw or slide support units geometries of jaw supports or slide rails can be generated, due to which the workpiece machining hindering collisions of the machined or machined workpiece are excluded with the Spannbakken nu or Gleitschienen hybrid.
  • a configuration of the clamping jaw support or the sliding rail support that is tailored to the specific load or force relationships. If, for example, large support forces are to be applied, a corresponding load-bearing combination of clamping jaw or slide support units can be selected.
  • inventive bending devices have the characterizing features of claims 5 and / or 6 and are accordingly provided with both a modular clamping jaw support and with a modular sliding rail support.
  • the bending device according to the invention is characterized by claim 7.
  • the Spannbakken fixedinRIC and / or the Gleitschienen organizations according to the invention structurally, in particular with respect to their extension in the workpiece transverse direction (claim 11) and / or with respect to their extension in the direction of the bending axis Be categorized (claim 12).
  • Such categorization greatly facilitates the assembly of tension beam and slide rail support units into correspondingly configured jaw or slide rail supports.
  • jaw or slide support units can be used on jaw and Gleitschienen monoin Ich one and the same category but also different categories.
  • a bending device 1 comprises a supporting structure 2 and a multi-level bending tool 3 mounted thereon.
  • the bending device 1 is attached to the front end of a machine frame, not shown, of a bending machine.
  • a workpiece feed carriage with collet can be moved.
  • the collet holds the machine-side end of a workpiece to be machined, in the present case a tube 4.
  • the tube 4 is positioned for processing.
  • the multi-level bending tool 3, which is used to machine the tube 4 according to the unrolling stretch bending method, comprises bending molds 5, 6, 7 which are designed to have a total of three bending levels in the direction of a bending axis 8 are arranged one above the other.
  • the bending molds 5, 6, 7 associated clamping jaws 9, 10, 11, which are also in the direction of the bending axis 8 above the other.
  • Biegeformnuten 12, 13, 14 are clamping jaws 15, 16, 17 opposite.
  • the Biegeformnuten 12, 13, 14 and the Spannbackennuten, 15, 16, 17 one and the same bending level have in the usual way a corresponding geometry.
  • the bending-forming grooves 12, 13, 14 as well as the clamping-bar grooves 15, 16, 17 form in cross-section substantially circular receptacles for the workpieces to be machined.
  • the illustrated example case arise due to a corresponding design of the Biegeformnuten 12, 13, 14 and the clamping jaw grooves 15, 16, 17 at the different bending levels slightly different diameter of the workpiece holders.
  • the illustrated design conditions allow it accordingly, bending pipes with three different diameters bending.
  • the multi-level bending tool 3 comprises in the direction of the bending axis 8 adjacent slide rails 18, 19, 20.
  • Slide rail grooves 21, 22, 23 on the slide rails 18, 19, 20 are designed according to the clamping groove 15, 16, 17.
  • the clamping jaws 9, 10, 11 are mounted on the side facing away from the bending forms 5, 6, 7 side on a jaw support in the form of a clamping bracket 24.
  • the clamping block 24 with the clamping jaws 9, 10, 11 attached thereto is movable in the direction of a double arrow 25 and thus in the transverse direction of the bending axis 8.
  • the clamping jaws 9, 10, 11 can be moved into a functional position close to the bending position or into a non-functional position away from bending.
  • the movement of the clamping jaws 9, 10, 11 in the direction of the double arrow 25 is effected by means of a carriage 26, which is guided in the aforementioned direction of movement on a pivot arm 27 of the support structure 2.
  • the required connection between the clamping jaws 9, 10, 11 and the carriage 26 is made via the clamping block 24.
  • the clamping block 24 has a modular construction and, in the illustrated example, comprises clamping jaw support units 28, 29, 30 which are arranged one above the other in the direction of the bending axis 8 and braced against each other by means of a tie rod 31.
  • the package of the jaw support units 28, 29, 30 produced by means of the tie rod 31 is attached to the carriage 26 via a fastening screw 32.
  • the extension of the clamping jaw support unit 30 in the transverse direction of the bending axis 8 is three times the corresponding extent of the jaw support units 28, 29. In its extension in the longitudinal direction of the Pipe 4 and in their overall height in the direction of the bending axis 8, the jaw support units 28, 29, 30 coincide with each other.
  • the jaw support units 28, 29 are structurally identical.
  • On the jaw support unit 28, the jaw 9 is detachably attached. Accordingly, the jaw 10 on the jaw support unit 29 and the jaw 11 are attached to the jaw support unit 30.
  • the Gleitschienen soin pulp 33, 33a are seen in the direction of the bending axis 8 on the Gleitschienen canin regulate 34, 34a, which in turn support the slide rail 19.
  • the Gleitschienen retainer 34, 34a arranged concealed and therefore not visible.
  • the Gleitschienen soin pulp 33, 34, 35 are held together by a tie rod 37, the Gleitschienen bisin pulp 33 a, 34 a, 35 a by a tie rod 38.
  • the resulting packages of slide rail support units 33, 34, 35; 33a, 34a, 35a are attached by means of tie rods 37, 38 on the bends 36, 36a.
  • the bends 36, 36 a are in turn attached to a longitudinal slide 39 of a cross slide 40.
  • the longitudinal slide 39 is movably guided in the direction of a double arrow 41 and thus in the longitudinal direction of the pipe 4 to be machined on a cross slide 42 of the cross slide 40.
  • the cross slide 42 in turn can be moved in the transverse direction of the tube 4 on a transverse guide 43 of the support structure 2 of the bending device 1.
  • the slide rail support units 33, 33a, 34, 34a, 35, 35a collectively form a slide rail support 44, wherein the slide rail support units 33, 33a are associated with the upper, the slide rail support units 34, 34a the middle and the Gleitschienen basic 35, 35a the lower bending level of the Mehrleiveaubiegewerkmaschinemaschines 3.
  • the bending tool parts of the upper bending level ie the bending mold 5, the clamping jaw 9 and the slide rail 18.
  • the machining process itself runs in the usual way.
  • the tube 4 is first adjusted in the tube longitudinal direction and in the tube circumferential direction.
  • the Mehrpracticbiegewerkmaschine 3 is converted by appropriate relative movement relative to the machine frame of the bending machine in a position at the ingestion of the tube 4 can be processed by means of the tool parts of the upper bending level, when taking the tube 4 is received in the Biegeformnut 12 of the bending mold 5.
  • the multi-level bending tool 3 is closed.
  • the clamping block moves 24 with the attached jaws 9, 10, 11 in the transverse direction of the bending axis 8 to the bending molds 5, 6, 7 out.
  • the tube 4 is now clamped between the bending mold 5 and the clamping jaw 9.
  • the slide rail support 44 is transferred to the slide rails 18, 19, 20 in the transverse direction of the tube 4 in the workpiece-near functional position.
  • the tube 4 comes to lie in the interior of the slide rail groove 21.
  • the pivot arm 27 of the support structure 2 with the clamping jaws 9, 10, 11 mounted thereon is pivoted about the bending axis 8 in the direction of an arrow 45 shown in FIG.
  • the deformed pipe section on the machine side adjacent pipe length is supported by means of the slide rail 18 in the workpiece transverse direction.
  • the slide 18 follows the bending movement associated with the longitudinal movement of the tube 4. This movement of the slide rail 18 is effected by corresponding longitudinal movement of the longitudinal slide 39 on the cross slide 42nd
  • Figs. 3 and 4 show the tube 4 when the bending device 1 is ready to process and immediately before the creation of a left bend. This was preceded by the creation of three bends, which ultimately led to the course of the tube 4 at the exiting from the multi-level bending tool 3 free end. So that the upcoming bend with the desired History of the bending plane can be created, the tube 4 was after the immediately preceding bend about its longitudinal axis in the from Figs. 3 and 4 apparent rotational position to move. This was only possible because the clamping bracket 24 and the slide rail support 44 had been suitably designed prior to the start of workpiece machining.
  • FIGS. 5 to 8 show, as shown in FIGS. 1 to 4 a bending device 51.
  • the bending device 51 differs from the bending device 1 according to FIGS. 1 to 4 by the design of a multi-level bending tool 53rd
  • the multi-level bending tool 53 includes bending molds 55, 56, 57 that are reduced in diameter relative to the bending molds 5, 6, 7 of the multi-level bending tool 3 and thereby allow the creation of bends with a smaller bending radius.
  • the bending forms 55, 56, 57 are assigned in accordance with the proportions shown in FIGS. 1 to 4 clamping jaws 9, 10, 11. Also used in the case of the bending device 51 slide rails 18, 19, 20 are consistent with the corresponding tool parts of Figs. 1 to 4 match.
  • Consistency remains with regard to the design of the clamping bracket 24, which is composed of clamping jaw support units 28, 29, 30 also in the case of the bending device 51.
  • the clamping block 24 is converted relative to the conditions in the case of the bending device 1 on the carriage 26 and thereby approximates the bending axis 8.
  • the reduction in diameter of the bending molds 55, 56, 57 with respect to the bending molds 5, 6, 7 is thereby compensated.
  • slide rail support 94 is designed in the case of the bending device 51.
  • slide rail support 94 also includes slide rail support units 96, 96a. While the Gleitschienen Moinigan 33, 33 a, 34, 34 a structurally identical and, moreover, with the jaw support units 28, 29 of the clamping bracket 24 structurally coincide, have the Gleitschienen Moltens 96, 96a in the transverse direction of the machined, in Figs. 5, 6, for simplicity, not shown tube 4, the double extent of the jaw and slide support units 28, 29, 33, 33 a, 34, 34 a on.
  • Figs. 1-8 shown jaw support units 28, 29, 30 as well as the slide rail support units 33, 33a, 34, 34a, 35, 35a, 96, 96a shown in the cited figures are all parts of a support unit construction kit, in the case of application related design of the clamping bracket 24 and the Slide rail supports 44, 94 is used. Included in this support unit kit are structurally categorized jaw and slide support units. With respect to the dimension in the transverse direction of the bending axis 8 and in the transverse direction of the pipe 4 to be processed, a total of three categories of support units are available. The largest extension category is the jaw support unit 30 of the medium extension category.
  • the slide rail support units 96, 96a and the smallest extension category are the jaw support units 28, 29 and the slide rail support units 33, 33a, 34, 34a and 35, 35a assigned. Slide rail and jaw support units are interchangeable due to their structural conformity.
  • the support unit construction kit comprises two categories. Alternatively to the in Figures 1 to 8 shown and the same height having support units are still support units with greater height available.
  • the machine operator When setting up the relevant bending device, the machine operator can thus resort to a fund of support units, under which he has to make a choice depending on the requirements of the workpiece machining to be performed.
  • the clamping jaws 9, 10, 11 and the slide rails 18, 19, 20 are to be attached to the selected support units.
  • an adjustment of the clamping jaws 9, 10, 11 in the transverse direction of the bending axis 8 and / or an adjustment of the slide rails 18, 19, 20 in the transverse direction of the pipe to be machined 4 can also be made.
  • the illustration of the existing setting options are shown in FIGS. 9, 10.
  • clamping jaws 9, 10, 11 and the slide rails 18, 19, 20 are attached to the clamping jaw support units 28, 29, 30 and the slide rails 18, 19, 20 on the Gleitschienen Landing Agency 33, 33 a, 34, 34 a, 96, 96 a respectively by means of the clamping jaws 9, 10, 11 and the slide rails 18, 19, 20 provided with threaded bolts appropriate.
  • the existing adjustment options can be used for fine adjustment on the individual bending levels, but can also be used for the appropriate positional change of the clamping jaws 9, 10, 11 and the slide rails 18, 19, 20 in the exchange of bending forms against bending shapes with different diameter or bending radius.

Description

Die Erfindung betrifft eine Biegeeinrichtung für eine Biegemaschine zum Biegen von stangen- und/oder von stabartigen Werkstücken, insbesondere von Rohren, mit wenigstens einem Mehrniveaubiegewerkzeug, an welchem eine Mehrzahl von in Richtung einer Biegeachse übereinander liegenden Biegeniveaus ausgebildet ist. Zum einen sind für jedes Biegeniveau eine Biegeform sowie zumindest eine der betreffenden Biegeform zugeordnete und in Querrichtung der Biegeachse in wenigstens eine biegeformnahe Funktions- und wenigstens eine biegeformferne Außerfunktionsstellung bewegbare Spannbacke vorgesehen, wobei die Spannbacke oder Spannbacken an der von der oder den Biegeformen abgewandten Seite an einer mit der oder den Spannbacken in Querrichtung der Biegeachse bewegbaren Spannbackenstütze in Querrichtung der Biegeachse wirksam gelagert sind. Zum andern sind für jedes Biegeniveau eine Biegeform sowie wenigstens eine Gleitschiene zur Abstützung des Werkstückes in Werkstückquerrichtung vorgesehen, wobei die Gleitschiene oder Gleitschienen an der von dem Werkstück abgewandten Seite an einer Gleitschienenstütze in Werkstückquerrichtung wirksam gelagert sind. Die Erfindung betrifft außerdem Spannbackenstützeinheiten sowie Gleitschienenstützeinheiten für Biegeeinrichtungen der vorstehenden Art.The invention relates to a bending device for a bending machine for bending rod and / or rod-like workpieces, in particular of tubes, with at least one multi-level bending tool on which a plurality of bending levels superimposed in the direction of a bending axis is formed. On the one hand, for each bending level, one bending shape and at least one of the relevant bending shape are associated and, in the transverse direction of the bending axis, at least one bending shape near Functional and at least one bending position remote non-functional position movable jaw provided, wherein the jaw or clamping jaws are effectively mounted on the side facing away from the bending or forms on a movable with the jaws or in the transverse direction of the bending axis jaw support in the transverse direction of the bending axis. On the other hand, a bending mold and at least one slide rail for supporting the workpiece in the workpiece transverse direction are provided for each bending level, wherein the slide rail or slide rails are effectively mounted on the side facing away from the workpiece on a slide rail support in the workpiece transverse direction. The invention also relates to jaw support units and slide rail support units for bending devices of the above type.

Gattungsgemäße Biegeeinrichtungen sind in GB-A 2 187 666 sowie DE 33 27 509 C2 offenbart. Die Spannbacken der vorbekannten Mehrniveaubiegewerkzeuge sind an ihrer von den zugehörigen Biegeformen abgewandten Seite an einem einstückigen Widerlagerblock in Querrichtung der Biegeachse des Mehrniveaubiegewerkzeuges gelagert. Entsprechend erfolgt die Abstützung der Gleitschienen von Mehrniveaubiegewerkzeugen nach dem Stand der Technik in Werkstückquerrichtung. Jeder der Widerlagerblöcke erstreckt sich über sämtliche Biegeniveaus des betreffenden Mehrniveaubiegewerkzeuges.Generic bending devices are disclosed in GB-A 2 187 666 and DE 33 27 509 C2. The jaws of the known Mehrniveaubiegewerkzeuge are mounted on its side facing away from the associated bending molds on a one-piece abutment block in the transverse direction of the bending axis of Mehrniveaubiegewerkzeuges. Accordingly, the support of the slide rails of multi-level bending tools according to the prior art in the workpiece transverse direction. Each of the abutment blocks extends over all bending levels of the relevant multi-level bending tool.

Eine Flexibilisierung der Gestaltung vorbekannter Biegeeinrichtungen hat sich die vorliegende Erfindung zum Ziel gesetzt.A flexibilization of the design of previously known bending devices, the present invention has set itself the goal.

Erfindungsgemäß gelöst wird diese Aufgabe durch die Biegeeinrichtung nach Patentanspruch 1 sowie durch die Biegeeinrichtung nach Patentanspruch 3. Demnach ist im Falle der Erfindung die Spannbackenstütze bzw. die Gleitschienenstütze des Mehrniveaubiegewerkzeuges modular aufgebaut. Die modulare Bauweise in der vorgesehenen Form gestattet es, die Spannbackenstütze oder die Gleitschienenstütze Biegeniveau für Biegeniveau zu gestalten und dadurch die Spannbackenstütze oder die Gleitschienenstütze insgesamt in ihrer Konfiguration auf die Erfordernisse des konkreten Bearbeitungsfalles abzustimmen. Insbesondere besteht die Möglichkeit, die von der Spannbackenstütze oder der Gleitschienenstütze gebildete "Störkontur" einzelfallabhängig zu definieren. Durch entsprechende Zusammenstellung von Spannbacken- oder Gleitschienenstützeinheiten lassen sich Geometrien von Spannbackenstützen oder Gleitschienenstützen erzeugen, aufgrund derer die Werkstückbearbeitung behindernde Kollisionen des zu bearbeitenden bzw. des bearbeiteten Werkstückes mit der Spannbakkenstütze oder der Gleitschienenstütze ausgeschlossen sind. Ebenfalls möglich ist beispielsweise eine auf die konkreten Last- bzw. Kraftverhältnisse abgestimmte Gestaltung der Spannbackenstütze oder der Gleitschienenstütze. Sind etwa große Stützkräfte aufzubringen, so kann eine entsprechend lastaufnahmefähige Zusammenstellung von Spannbacken- oder Gleitschienenstützeinheiten gewählt werden.This object is achieved according to the invention by the bending device according to claim 1 and by the bending device according to claim 3. Accordingly, in the case of the invention, the clamping jaw support or the slide rail support of the multi-level bending tool is modular. The modular design in the intended form allows to design the jaw support or the bending rail support bending level for bending level and thereby to tailor the jaw support or the sliding rail support as a whole in its configuration to the requirements of the concrete processing case. In particular, it is possible to define the "interference contour" formed by the clamping jaw support or the slide rail support on a case-by-case basis. By appropriate combination of clamping jaw or slide support units geometries of jaw supports or slide rails can be generated, due to which the workpiece machining hindering collisions of the machined or machined workpiece are excluded with the Spannbakkenstütze or Gleitschienenstütze. Likewise possible, for example, is a configuration of the clamping jaw support or the sliding rail support that is tailored to the specific load or force relationships. If, for example, large support forces are to be applied, a corresponding load-bearing combination of clamping jaw or slide support units can be selected.

Besondere Ausführungsarten der Biegeeinrichtungen nach den Patentansprüchen 1 und 3 ergeben sich aus den abhängigen Patentansprüchen 2 und 4 bis 12.Particular embodiments of the bending devices according to claims 1 and 3 emerge from the dependent claims 2 and 4 to 12.

Im Sinne der Erfindung denkbar ist eine modulare Bauweise der Spannbackenstütze oder der Gleitschienenstütze in Fällen, in denen nicht auf sämtlichen Biegeniveaus des Mehrniveaubiegewerkzeuges wenigstens eine Spannbacke oder wenigstens eine Gleitschiene vorgesehen ist und in denen dementsprechend Spannbacken oder Gleitschienen in Richtung der Biegeachse zu verstellen und dadurch auf dem Biegeniveau, auf welchem sie bei der anstehenden Bearbeitung benötigt werden, anzuordnen sind. Erfindungsgemäß favorisiert werden Biegeeinrichtungen, wie sie in den Patentansprüchen 2 und 4 beschrieben sind und die für die unterschiedlichen Biegeniveaus jeweils wenigstens eine Spannbacke oder jeweils wenigstens eine Gleitschiene aufweisen.In the context of the invention is conceivable a modular design of the jaw support or Gleitschienenstütze in cases where not at all bending levels of Mehrniveaubiegewerkzeuges at least one jaw or at least one slide is provided and in which accordingly to adjust jaws or slides in the direction of the bending axis and thereby on the bending level at which they are needed in the upcoming processing, are to be arranged. Bending devices, as described in claims 2 and 4, which have at least one clamping jaw or in each case at least one slide rail for the different bending levels, are favored according to the invention.

Erfindungsgemäß ebenfalls denkbar ist der Einsatz von Biegeformen auf sämtlichen oder nur auf einzelnen der Biegeniveaus.Likewise conceivable according to the invention is the use of bending molds on all or only on some of the bending levels.

Weitere bevorzugte Bauarten erfindungsgemäßer Biegeeinrichtungen weisen die kennzeichnenden Merkmale der Patentansprüche 5 und/oder 6 auf und sind dementsprechend sowohl mit einer modular aufgebauten Spannbackenstütze als auch mit einer modular aufgebauten Gleitschienenstütze versehen.Further preferred types of inventive bending devices have the characterizing features of claims 5 and / or 6 and are accordingly provided with both a modular clamping jaw support and with a modular sliding rail support.

Durch die Möglichkeit, ein und dasselbe Bauteil wahlweise als Spannbackenstützeinheit oder als Gleitschienenstützeinheit zu verwenden bzw. Spannbacken- und Gleitschienenstützeinheiten gegeneinander auszutauschen, zeichnet sich die erfindungsgemäße Biegeeinrichtung nach Patentanspruch 7 aus.Due to the possibility to use one and the same component either as a clamping jaw support unit or as a slide rail support unit or to exchange clamping jaw and slide support units against each other, the bending device according to the invention is characterized by claim 7.

Gemäß den Patentansprüchen 8 und 9 besteht in Weiterbildung der Erfindung die Möglichkeit, Spannbacken- und/oder Gleitschienenstützeinheiten zur Justage von Spannbacken insbesondere gegenüber der jeweils zugeordneten Biegeform bzw. von Gleitschienen insbesondere gegenüber dem abzustützenden Werkstück zu verwenden. Gleichzeitig lassen sich mit den Spannbacken- und den Gleitschienenstützeinheiten auch die daran gelagerten Spannbakken bzw. Gleitschienen montieren und demontieren. Im Falle erfindungsgemäßer Biegeeinrichtungen besteht folglich die Möglichkeit, Spannbackenstützeinheiten und zugeordnete Spannbacken und/oder Gleitschienenstützeinheiten und zugehörige Gleitschienen bei dem anwendungsfallbezogenen Rüsten der Biegeeinrichtung als Baueinheiten zu handhaben und diese Baueinheiten bei Nichtgebrauch mit der vorgenommenen Einstellung vorzuhalten.According to claims 8 and 9 is in a further development of the invention, the possibility of clamping jaw and / or Gleitschienenstützeinheiten for adjusting jaws, in particular with respect to the respectively associated bending mold or of slide rails, in particular to be used against the workpiece to be supported. At the same time, the clamping jaws or slide rails mounted thereon can also be mounted and dismounted with the clamping jaw and slide rail support units. In the case of inventive bending devices is therefore possible to handle jaw support units and associated clamping jaws and / or Gleitschienenstützeinheiten and associated slides in the application case related equipment of the bending device as units and maintain these units when not in use with the adjustment made.

Ausweislich der Patentansprüche 10 bis 12 können die Spannbakkenstützeinheiten und/oder die Gleitschienenstützeinheiten erfindungsgemäßer Biegeeinrichtungen baulich, insbesondere bezüglich ihrer Erstreckung in Werkstückquerrichtung (Patentanspruch 11) und/oder bezüglich ihrer Erstreckung in Richtung der Biegeachse (Patentanspruch 12) kategorisiert sein. Eine derartige Kategorisierung erleichtert die Zusammenstellung von Spannbakken- und Gleitschienenstützeinheiten zu entsprechend konfigurierten Spannbacken- bzw. Gleitschienenstützen erheblich. Bei der Kombination baulich kategorisierter und somit baulich definiert gestalteter Spannbacken- bzw. Gleitschienenstützeinheiten kann auf Spannbacken- und Gleitschienenstützeinheiten ein und derselben Kategorie aber auch unterschiedlicher Kategorien zurückgegriffen werden.According to the claims 10 to 12, the Spannbakkenstützeinheiten and / or the Gleitschienenstützeinheiten bending devices according to the invention structurally, in particular with respect to their extension in the workpiece transverse direction (claim 11) and / or with respect to their extension in the direction of the bending axis Be categorized (claim 12). Such categorization greatly facilitates the assembly of tension beam and slide rail support units into correspondingly configured jaw or slide rail supports. In the combination of structurally categorized and thus structurally defined designed jaw or slide support units can be used on jaw and Gleitschienenstützeinheiten one and the same category but also different categories.

Nachstehend wird die Erfindung anhand beispielhafter schematischer Darstellungen näher erläutert. Es zeigen:

Fig. 1
eine perspektivische Darstellung einer Biegeeinrichtung mit einem Mehrniveaubiegewerkzeug erster Bauart vor einer Werkstückbearbeitung,
Fig. 2
die Biegeeinrichtung gemäß Figur 1 in der stirnseitigen Draufsicht,
Fig. 3
eine perspektivische Darstellung der Biegeeinrichtung gemäß den Fign. 1 und 2 während der Werkstückbearbeitung,
Fig. 4
die Biegeeinrichtung gemäß Fig. 3 in der stirnseitigen Draufsicht,
Fig. 5
eine perspektivische Darstellung einer Biegeeinrichtung mit einem Mehrniveaubiegewerkzeug zweiter Bauart vor einer Werkstückbearbeitung,
Fig. 6
die Biegeeinrichtung gemäß Fig. 5 in der stirnseitigen Draufsicht,
Fig. 7
eine perspektivische Darstellung der Biegeeinrichtung gemäß den Fign. 5 und 6 während der Werkstückbearbeitung,
Fig. 8
die Biegeeinrichtung gemäß Fig. 7 in der stirnseitigen Draufsicht,
Fig. 9
eine perspektivische Darstellung der Biegeeinrichtung gemäß den Fign. 5 und 6 mit gegenüber den Fign. 5 und 6 verstellten Spannbacken und Gleitschienen des Mehrniveaubiegewerkzeuges und
Fig. 10
die Biegeeinrichtung gemäß Fig. 9 in der stirnseitigen Draufsicht.
The invention will be explained in more detail below with reference to exemplary schematic illustrations. Show it:
Fig. 1
a perspective view of a bending device with a multi-level bending tool of the first type before a workpiece machining,
Fig. 2
the bending device according to FIG. 1 in the frontal plan view,
Fig. 3
a perspective view of the bending device according to FIGS. 1 and 2 during workpiece machining,
Fig. 4
the bending device according to FIG. 3 in the frontal plan view,
Fig. 5
a perspective view of a bending device with a Mehrniveaubiegewerkzeug second design before a workpiece machining,
Fig. 6
the bending device according to FIG. 5 in the frontal plan view,
Fig. 7
a perspective view of the bending device according to FIGS. 5 and 6 during workpiece machining,
Fig. 8
the bending device according to FIG. 7 in the frontal plan view,
Fig. 9
a perspective view of the bending device according to FIGS. 5 and 6 with respect to FIGS. 5 and 6 adjusted clamping jaws and slide rails of the multi-level bending tool and
Fig. 10
the bending device of FIG. 9 in the frontal plan view.

Gemäß den Fign. 1 bis 4 umfasst eine Biegeeinrichtung 1 eine Tragstruktur 2 sowie ein daran montiertes Mehrniveaubiegewerkzeug 3. Die Biegeeinrichtung 1 ist an dem vorderen Ende eines nicht gezeigten Maschinengestells einer Biegemaschine angebracht. An dem Maschinengestell entlang ist in herkömmlicher Weise ein Werkstückvorschubwagen mit Spannzange verfahrbar. Die Spannzange hält das maschinenseitige Ende eines zu bearbeitenden Werkstückes, im vorliegenden Fall eines Rohres 4. Durch Drehen der Spannzange um die Rohrachse sowie durch Verfahren des Werkstückvorschubwagens in Rohrlängsrichtung wird das Rohr 4 für die Bearbeitung positioniert.According to FIGS. 1 to 4, a bending device 1 comprises a supporting structure 2 and a multi-level bending tool 3 mounted thereon. The bending device 1 is attached to the front end of a machine frame, not shown, of a bending machine. Along the machine frame in a conventional manner, a workpiece feed carriage with collet can be moved. The collet holds the machine-side end of a workpiece to be machined, in the present case a tube 4. By rotating the collet about the tube axis and by moving the workpiece feed carriage in the tube longitudinal direction, the tube 4 is positioned for processing.

Das Mehrniveaubiegewerkzeug 3, das zur Bearbeitung des Rohres 4 nach dem Abroll-Streckbiegeverfahren dient, umfasst Biegeformen 5, 6, 7, die unter Ausbildung von insgesamt drei Biegeniveaus in Richtung einer Biegeachse 8 übereinander angeordnet sind. Den Biegeformen 5, 6, 7 zugeordnet sind Spannbacken 9, 10, 11, die ebenfalls in Richtung der Biegeachse 8 übereinander liegen. Biegeformnuten 12, 13, 14 liegen Spannbackennuten 15, 16, 17 gegenüber. Die Biegeformnuten 12, 13, 14 und die Spannbackennuten, 15, 16, 17 ein und desselben Biegeniveaus besitzen in gewohnter Weise eine einander entsprechende Geometrie. Bei geschlossenem Mehrniveaubiegewerkzeug 3 bilden die Biegeformnuten 12, 13, 14 sowie die Spannbackennuten 15, 16, 17 im Querschnitt im Wesentlichen kreisförmige Aufnahmen für die zu bearbeitenden Werkstücke. In dem dargestellten Beispielsfall ergeben sich aufgrund einer entsprechenden Ausbildung der Biegeformnuten 12, 13, 14 sowie der Spannbackennuten 15, 16, 17 auf den verschiedenen Biegeniveaus geringfügig unterschiedliche Durchmesser der Werkstückaufnahmen. Die dargestellten konstruktiven Verhältnisse gestatten es dementsprechend, Rohre mit drei unterschiedlichen Durchmessern biegend zu bearbeiten.The multi-level bending tool 3, which is used to machine the tube 4 according to the unrolling stretch bending method, comprises bending molds 5, 6, 7 which are designed to have a total of three bending levels in the direction of a bending axis 8 are arranged one above the other. The bending molds 5, 6, 7 associated clamping jaws 9, 10, 11, which are also in the direction of the bending axis 8 above the other. Biegeformnuten 12, 13, 14 are clamping jaws 15, 16, 17 opposite. The Biegeformnuten 12, 13, 14 and the Spannbackennuten, 15, 16, 17 one and the same bending level have in the usual way a corresponding geometry. When the multi-level bending tool 3 is closed, the bending-forming grooves 12, 13, 14 as well as the clamping-bar grooves 15, 16, 17 form in cross-section substantially circular receptacles for the workpieces to be machined. In the illustrated example case arise due to a corresponding design of the Biegeformnuten 12, 13, 14 and the clamping jaw grooves 15, 16, 17 at the different bending levels slightly different diameter of the workpiece holders. The illustrated design conditions allow it accordingly, bending pipes with three different diameters bending.

Als weitere Werkzeugteile umfasst das Mehrniveaubiegewerkzeug 3 einander in Richtung der Biegeachse 8 benachbarte Gleitschienen 18, 19, 20. Gleitschienennuten 21, 22, 23 an den Gleitschienen 18, 19, 20 sind entsprechend den Spannbackennuten 15, 16, 17 gestaltet.As a further tool parts, the multi-level bending tool 3 comprises in the direction of the bending axis 8 adjacent slide rails 18, 19, 20. Slide rail grooves 21, 22, 23 on the slide rails 18, 19, 20 are designed according to the clamping groove 15, 16, 17.

Die Spannbacken 9, 10, 11 sind an der von den Biegeformen 5, 6, 7 abgewandten Seite an einer Spannbackenstütze in Form eines Spannbockes 24 gelagert. Der Spannbock 24 mit den daran angebrachten Spannbacken 9, 10, 11 ist in Richtung eines Doppelpfeils 25 und somit in Querrichtung der Biegeachse 8 beweglich. Dadurch lassen sich die Spannbacken 9, 10, 11 in eine biegeformnahe Funktionsstellung oder in eine biegeformferne Außerfunktionsstellung bewegen. Bewirkt wird die Bewegung der Spannbacken 9, 10, 11 in Richtung des Doppelpfeils 25 mittels eines Schlittens 26, der in der genannten Bewegungsrichtung an einem Schwenkarm 27 der Tragstruktur 2 geführt ist. Die erforderliche Verbindung zwischen den Spannbacken 9, 10, 11 und dem Schlitten 26 wird über den Spannbock 24 hergestellt.The clamping jaws 9, 10, 11 are mounted on the side facing away from the bending forms 5, 6, 7 side on a jaw support in the form of a clamping bracket 24. The clamping block 24 with the clamping jaws 9, 10, 11 attached thereto is movable in the direction of a double arrow 25 and thus in the transverse direction of the bending axis 8. As a result, the clamping jaws 9, 10, 11 can be moved into a functional position close to the bending position or into a non-functional position away from bending. The movement of the clamping jaws 9, 10, 11 in the direction of the double arrow 25 is effected by means of a carriage 26, which is guided in the aforementioned direction of movement on a pivot arm 27 of the support structure 2. The required connection between the clamping jaws 9, 10, 11 and the carriage 26 is made via the clamping block 24.

Der Spannbock 24 ist modular aufgebaut und umfasst im gezeigten Beispielsfall Spannbackenstützeinheiten 28, 29, 30, die in Richtung der Biegeachse 8 übereinander angeordnet und spannbakkenseitig mittels eines Zugankers 31 gegeneinander verspannt sind. Das mit Hilfe des Zugankers 31 hergestellte Paket der Spannbackenstützeinheiten 28, 29, 30 ist über eine Befestigungsschraube 32 an dem Schlitten 26 angebracht. Dabei durchsetzt die Befestigungsschraube 32 die untere Spannbackenstützeinheit 30 des Spannbockes 24. Die Erstreckung der Spannbackenstützeinheit 30 in Querrichtung der Biegeachse 8 beträgt das Dreifache der entsprechenden Erstreckung der Spannbackenstützeinheiten 28, 29. In ihrer Erstreckung in Längsrichtung des Rohres 4 sowie in ihrer Bauhöhe in Richtung der Biegeachse 8 stimmen die Spannbackenstützeinheiten 28, 29, 30 miteinander überein. Die Spannbackenstützeinheiten 28, 29 sind baulich identisch. An der Spannbackenstützeinheit 28 ist die Spannbacke 9 lösbar angebracht. Entsprechend sind die Spannbacke 10 an der Spannbackenstützeinheit 29 und die Spannbacke 11 an der Spannbackenstützeinheit 30 befestigt.The clamping block 24 has a modular construction and, in the illustrated example, comprises clamping jaw support units 28, 29, 30 which are arranged one above the other in the direction of the bending axis 8 and braced against each other by means of a tie rod 31. The package of the jaw support units 28, 29, 30 produced by means of the tie rod 31 is attached to the carriage 26 via a fastening screw 32. The extension of the clamping jaw support unit 30 in the transverse direction of the bending axis 8 is three times the corresponding extent of the jaw support units 28, 29. In its extension in the longitudinal direction of the Pipe 4 and in their overall height in the direction of the bending axis 8, the jaw support units 28, 29, 30 coincide with each other. The jaw support units 28, 29 are structurally identical. On the jaw support unit 28, the jaw 9 is detachably attached. Accordingly, the jaw 10 on the jaw support unit 29 and the jaw 11 are attached to the jaw support unit 30.

Mit den Spannbackenstützeinheiten 28, 29 baugleich sind Gleitschienenstützeinheiten 33, 33a, 34, 34a, 35, 35a. Die Gleitschienenstützeinheiten 33, 33a lagern die Gleitschiene 18 an deren von dem Rohr 4 abliegenden Seite. Entsprechend den Verhältnissen an dem Spannbock 24 ist die Gleitschiene 18 lösbar mit den Gleitschienenstützeinheiten 33, 33a verbunden.With the jaw support units 28, 29 are identical in construction Gleitschienenstützeinheiten 33, 33a, 34, 34a, 35, 35a. The Gleitschienenstützeinheiten 33, 33 a store the slide rail 18 at its side remote from the pipe 4 side. In accordance with the conditions on the clamping bracket 24, the slide rail 18 is detachably connected to the slide rail support units 33, 33a.

Die Gleitschienenstützeinheiten 33, 33a liegen in Richtung der Biegeachse 8 gesehen auf den Gleitschienenstützeinheiten 34, 34a auf, die ihrerseits die Gleitschiene 19 lagern. In den Abbildungen sind die Gleitschienenstützeinheiten 34, 34a verdeckt angeordnet und daher nicht erkennbar.The Gleitschienenstützeinheiten 33, 33a are seen in the direction of the bending axis 8 on the Gleitschienenstützeinheiten 34, 34a, which in turn support the slide rail 19. In the figures, the Gleitschienenstützeinheiten 34, 34a arranged concealed and therefore not visible.

Gleiches gilt für die Gleitschienenstützeinheiten 35, 35a, die unter den Gleitschienenstützeinheiten 34, 34a angeordnet und an denen einerseits die Gleitschiene 20 und andererseits Abwinkelungen 36, 36a lösbar angebracht sind.The same applies to the Gleitschienenstützeinheiten 35, 35a, which are arranged under the Gleitschienenstützeinheiten 34, 34a and on which on the one hand, the slide rail 20 and on the other hand bends 36, 36a are detachably attached.

Die Gleitschienenstützeinheiten 33, 34, 35 werden durch einen Zuganker 37, die Gleitschienenstützeinheiten 33a, 34a, 35a durch einen Zuganker 38 zusammengehalten. Die sich dadurch ergebenden Pakete von Gleitschienenstützeinheiten 33, 34, 35; 33a, 34a, 35a sind mittels der Zuganker 37, 38 auf den Abwinkelungen 36, 36a befestigt. Die Abwinkelungen 36, 36a sind ihrerseits an einem Längsschlitten 39 eines Kreuzschlittens 40 angebracht. Der Längsschlitten 39 ist in Richtung eines Doppelpfeils 41 und somit in Längsrichtung des zu bearbeitenden Rohres 4 an einem Querschlitten 42 des Kreuzschlittens 40 beweglich geführt. Der Querschlitten 42 wiederum ist in Querrichtung des Rohres 4 an einer Querführung 43 der Tragstruktur 2 der Biegeeinrichtung 1 verfahrbar.The Gleitschienenstützeinheiten 33, 34, 35 are held together by a tie rod 37, the Gleitschienenstützeinheiten 33 a, 34 a, 35 a by a tie rod 38. The resulting packages of slide rail support units 33, 34, 35; 33a, 34a, 35a are attached by means of tie rods 37, 38 on the bends 36, 36a. The bends 36, 36 a are in turn attached to a longitudinal slide 39 of a cross slide 40. The longitudinal slide 39 is movably guided in the direction of a double arrow 41 and thus in the longitudinal direction of the pipe 4 to be machined on a cross slide 42 of the cross slide 40. The cross slide 42 in turn can be moved in the transverse direction of the tube 4 on a transverse guide 43 of the support structure 2 of the bending device 1.

Die Gleitschienenstützeinheiten 33, 33a, 34, 34a, 35, 35a bilden gemeinschaftlich eine Gleitschienenstütze 44, wobei die Gleitschienenstützeinheiten 33, 33a dem oberen, die Gleitschienenstützeinheiten 34, 34a dem mittleren und die Gleitschienenstützeinheiten 35, 35a dem unteren Biegeniveau des Mehrniveaubiegewerkzeuges 3 zugeordnet sind.The slide rail support units 33, 33a, 34, 34a, 35, 35a collectively form a slide rail support 44, wherein the slide rail support units 33, 33a are associated with the upper, the slide rail support units 34, 34a the middle and the Gleitschienenstützeinheiten 35, 35a the lower bending level of the Mehrleiveaubiegewerkzeuges 3.

Zur Bearbeitung des Rohres 4 eingesetzt werden ausweislich der Fign. 1 bis 4 die Biegewerkzeugteile des oberen Biegeniveaus, d.h. die Biegeform 5, die Spannbacke 9 sowie die Gleitschiene 18. Der Bearbeitungsvorgang selbst läuft in gewohnter Weise ab.For processing the tube 4 are used as shown in FIGS. 1 to 4, the bending tool parts of the upper bending level, ie the bending mold 5, the clamping jaw 9 and the slide rail 18. The machining process itself runs in the usual way.

Demnach wird bei geöffnetem Mehrniveaubiegewerkzeug 3 zunächst das Rohr 4 in Rohrlängs- sowie in Rohrumfangsrichtung justiert. Das Mehrniveaubiegewerkzeug 3 wird durch entsprechende Relativbewegung gegenüber dem Maschinengestell der Biegemaschine in eine Position überführt, bei deren Einnahme das Rohr 4 mittels der Werkzeugteile des oberen Biegeniveaus bearbeitet werden kann, bei deren Einnahme also das Rohr 4 in der Biegeformnut 12 der Biegeform 5 aufgenommen ist.Accordingly, when the multi-level bending tool 3 is opened, the tube 4 is first adjusted in the tube longitudinal direction and in the tube circumferential direction. The Mehrniveaubiegewerkzeug 3 is converted by appropriate relative movement relative to the machine frame of the bending machine in a position at the ingestion of the tube 4 can be processed by means of the tool parts of the upper bending level, when taking the tube 4 is received in the Biegeformnut 12 of the bending mold 5.

Anschließend wird das Mehrniveaubiegewerkzeug 3 geschlossen. Zu diesem Zweck verfährt der Spannbock 24 mit den daran angebrachten Spannbacken 9, 10, 11 in Querrichtung der Biegeachse 8 zu den Biegeformen 5, 6, 7 hin. Das Rohr 4 wird nun zwischen der Biegeform 5 und der Spannbacke 9 geklemmt. Gleichzeitig wird durch Verfahren des Querschlittens 42 die Gleitschienenstütze 44 mit den Gleitschienen 18, 19, 20 in Querrichtung des Rohres 4 in die werkstücknahe Funktionsstellung überführt. Das Rohr 4 kommt dabei im Innern der Gleitschienennut 21 zu liegen. Ausgehend von dem nun vorliegenden Betriebszustand wird der Schwenkarm 27 der Tragstruktur 2 mit den daran gelagerten Spannbacken 9, 10, 11 in Richtung eines in Fig. 1 gezeigten Pfeils 45 um die Biegeachse 8 geschwenkt. Damit einher geht eine entsprechende Drehbewegung der Biegeformen 5, 6, 7 um die Biegeachse 8. Das zwischen der Biegeform 5 und der Spannbacke 9 eingespannte Rohr 4 wird dabei um die Biegeform 5 gezogen und folglich mit einer Linksbiegung versehen.Subsequently, the multi-level bending tool 3 is closed. For this purpose, the clamping block moves 24 with the attached jaws 9, 10, 11 in the transverse direction of the bending axis 8 to the bending molds 5, 6, 7 out. The tube 4 is now clamped between the bending mold 5 and the clamping jaw 9. At the same time by moving the cross slide 42, the slide rail support 44 is transferred to the slide rails 18, 19, 20 in the transverse direction of the tube 4 in the workpiece-near functional position. The tube 4 comes to lie in the interior of the slide rail groove 21. Based on the operating state now present, the pivot arm 27 of the support structure 2 with the clamping jaws 9, 10, 11 mounted thereon is pivoted about the bending axis 8 in the direction of an arrow 45 shown in FIG. 1. This is accompanied by a corresponding rotational movement of the bending molds 5, 6, 7 about the bending axis 8. The clamped between the bending mold 5 and the clamping jaw 9 tube 4 is thereby pulled around the bending mold 5 and thus provided with a left turn.

Die dem verformten Rohrabschnitt maschinenseitig benachbarte Rohrlänge wird mittels der Gleitschiene 18 in Werkstückquerrichtung abgestützt. In gewohnter Weise folgt die Gleitschiene 18 der mit der biegenden Bearbeitung verbundenen Längsbewegung des Rohres 4. Diese Bewegung der Gleitschiene 18 wird bewirkt durch entsprechende Längsbewegung des Längsschlittens 39 an dem Querschlitten 42.The deformed pipe section on the machine side adjacent pipe length is supported by means of the slide rail 18 in the workpiece transverse direction. In the usual way, the slide 18 follows the bending movement associated with the longitudinal movement of the tube 4. This movement of the slide rail 18 is effected by corresponding longitudinal movement of the longitudinal slide 39 on the cross slide 42nd

Die an der Gleitschiene 18 sowie an der Spannbacke 9 in Querrichtung des Rohres 4 wirksamen Kräfte werden über die unteren Gleitschienenstützeinheiten 35, 35a der Gleitschienenstütze 44 bzw. über die untere Spannbackenstützeinheit 30 des Spannbockes 24 in die Tragstruktur 2 der Biegeeinrichtung 1 abgetragen. An dem Spannbock 24 steht dabei aufgrund der Abmessungen der Spannbackenstützeinheit 30 eine großflächige Basis für die Kraftübertragung zur Verfügung.The forces acting on the slide rail 18 and on the clamping jaw 9 in the transverse direction of the pipe 4 are removed via the lower slide rail support units 35, 35a of the slide rail support 44 or via the lower clamping jaw support unit 30 of the clamping bracket 24 into the support structure 2 of the bending device 1. Due to the dimensions of the clamping jaw support unit 30, a large-area base for the power transmission is available on the clamping block 24.

Mittels der Biegeeinrichtung 1 durchführbar sind neben Einfachauch Mehrfachbearbeitungen von Werkstücken. Veranschaulicht ist ein derartiger Anwendungsfall in den Fign. 3 und 4. Diese Abbildungen zeigen das Rohr 4 bei Bearbeitungsbereitschaft der Biegeeinrichtung 1 und dabei unmittelbar vor Erstellung einer Linksbiegung. Vorausgegangen war die Erstellung dreier Biegungen, die letztendlich zu dem Verlauf des Rohres 4 an dem aus dem Mehrniveaubiegewerkzeug 3 austretenden freien Ende geführt haben. Damit die jetzt anstehende Biegung mit dem gewünschten Verlauf der Biegeebene erstellt werden kann, war das Rohr 4 nach der unmittelbar vorausgegangenen Biegung um seine Längsachse in die aus den Fign. 3 und 4 ersichtliche Drehstellung zu bewegen. Dies war nur möglich, weil der Spannbock 24 und die Gleitschienenstütze 44 vor Beginn der Werkstückbearbeitung in geeigneter Weise gestaltet worden waren. Durch Zusammenstellung der Spannbackenstützeinheiten 28, 29, 30 sowie der Gleitschienenstützeinheiten 33, 33a, 34, 34a, 35, 35a in der dargestellten Art und Weise wurde eine äußere Gestalt des Spannbockes 24 sowie der Gleitschienenstütze 44 erzeugt, die es erlaubte, das verformte Ende des Rohres 4 unter Vermeidung einer Kollision mit dem Spannbock 24 und der Gleitschienenstütze 44 in der aus den Fign. 3 und 4 ersichtlichen Art und Weise auszurichten. Die durch den Spannbock 24 und die Gleitschienenstütze 44 erzeugte "Störkontur" wurde derart definiert, dass das Rohr 24 bei der zu seiner Bearbeitung erforderlichen Positionierung gegenüber der Biegeeinrichtung 1 stets außerhalb dieser Störkontur angeordnet bleibt.By means of the bending device 1 can be carried out in addition to single also multiple machining of workpieces. Illustrated is such an application in Figs. 3 and 4. These figures show the tube 4 when the bending device 1 is ready to process and immediately before the creation of a left bend. This was preceded by the creation of three bends, which ultimately led to the course of the tube 4 at the exiting from the multi-level bending tool 3 free end. So that the upcoming bend with the desired History of the bending plane can be created, the tube 4 was after the immediately preceding bend about its longitudinal axis in the from Figs. 3 and 4 apparent rotational position to move. This was only possible because the clamping bracket 24 and the slide rail support 44 had been suitably designed prior to the start of workpiece machining. By assembling the jaw support units 28, 29, 30 and the slide rail support units 33, 33a, 34, 34a, 35, 35a in the illustrated manner, an outer shape of the clamp bracket 24 and the slide rail support 44 has been created, which allowed the deformed end of Pipe 4 while avoiding a collision with the clamping bracket 24 and the slide rail support 44 in the of Figs. 3 and 4 obvious way to align. The "interference contour" generated by the clamping block 24 and the slide rail support 44 has been defined in such a way that the pipe 24 always remains outside this interference contour in the positioning required relative to the bending device 1 for its machining.

Die Fign. 5 bis 8 zeigen entsprechend den Fign. 1 bis 4 eine Biegeeinrichtung 51. Die Biegeeinrichtung 51 unterscheidet sich von der Biegeeinrichtung 1 gemäß den Fign. 1 bis 4 durch die Gestaltung eines Mehrniveaubiegewerkzeuges 53.The Fign. FIGS. 5 to 8 show, as shown in FIGS. 1 to 4 a bending device 51. The bending device 51 differs from the bending device 1 according to FIGS. 1 to 4 by the design of a multi-level bending tool 53rd

Das Mehrniveaubiegewerkzeug 53 umfasst Biegeformen 55, 56, 57, die gegenüber den Biegeformen 5, 6, 7 des Mehrniveaubiegewerkzeuges 3 durchmesserreduziert sind und dadurch die Erstellung von Biegungen mit kleinerem Biegeradius ermöglichen. Den Biegeformen 55, 56, 57 zugeordnet sind in Übereinstimmung mit den Verhältnissen gemäß den Fign. 1 bis 4 Spannbacken 9, 10, 11. Auch die im Falle der Biegeeinrichtung 51 verwendeten Gleitschienen 18, 19, 20 stimmen mit den entsprechenden Werkzeugteilen der Fign. 1 bis 4 überein.The multi-level bending tool 53 includes bending molds 55, 56, 57 that are reduced in diameter relative to the bending molds 5, 6, 7 of the multi-level bending tool 3 and thereby allow the creation of bends with a smaller bending radius. The bending forms 55, 56, 57 are assigned in accordance with the proportions shown in FIGS. 1 to 4 clamping jaws 9, 10, 11. Also used in the case of the bending device 51 slide rails 18, 19, 20 are consistent with the corresponding tool parts of Figs. 1 to 4 match.

Übereinstimmung besteht weiterhin hinsichtlich der Gestaltung des Spannbockes 24, der auch im Falle der Biegeeinrichtung 51 aus Spannbackenstützeinheiten 28, 29, 30 zusammengesetzt ist. Allerdings ist der Spannbock 24 im Falle der Biegeeinrichtung 51 gegenüber den Verhältnissen im Falle der Biegeeinrichtung 1 an dem Schlitten 26 umgesetzt und dadurch der Biegeachse 8 angenähert. Die Durchmesserreduzierung der Biegeformen 55, 56, 57 gegenüber den Biegeformen 5, 6, 7 wird dadurch ausgeglichen.Consistency remains with regard to the design of the clamping bracket 24, which is composed of clamping jaw support units 28, 29, 30 also in the case of the bending device 51. However, in the case of the bending device 51, the clamping block 24 is converted relative to the conditions in the case of the bending device 1 on the carriage 26 and thereby approximates the bending axis 8. The reduction in diameter of the bending molds 55, 56, 57 with respect to the bending molds 5, 6, 7 is thereby compensated.

Ebenfalls abweichend von den Verhältnissen nach den Fign. 1 bis 4 ist im Falle der Biegeeinrichtung 51 eine Gleitschienenstütze 94 gestaltet. So umfasst die Gleitschienenstütze 94 zusätzlich zu Gleitschienenstützeinheiten 33, 33a und 34, 34a auch Gleitschienenstützeinheiten 96, 96a. Während die Gleitschienenstützeinheiten 33, 33a, 34, 34a baulich identisch ausgeführt sind und darüber hinaus auch mit dem Spannbackenstützeinheiten 28, 29 des Spannbockes 24 baulich übereinstimmen, weisen die Gleitschienenstützeinheiten 96, 96a in Querrichtung des zu bearbeitenden, in den Fign. 5, 6 der Einfachheit halber nicht dargestellten Rohres 4 die doppelte Erstreckung der Spannbacken- und Gleitschienenstützeinheiten 28, 29, 33, 33a, 34, 34a auf.Also deviating from the conditions according to FIGS. 1 to 4, a slide rail support 94 is designed in the case of the bending device 51. Thus, in addition to slide rail support units 33, 33a and 34, 34a, slide rail support 94 also includes slide rail support units 96, 96a. While the Gleitschienenstützeinheiten 33, 33 a, 34, 34 a structurally identical and, moreover, with the jaw support units 28, 29 of the clamping bracket 24 structurally coincide, have the Gleitschienenstützeinheiten 96, 96a in the transverse direction of the machined, in Figs. 5, 6, for simplicity, not shown tube 4, the double extent of the jaw and slide support units 28, 29, 33, 33 a, 34, 34 a on.

Die in den Fign. 1 bis 8 gezeigten Spannbackenstützeinheiten 28, 29, 30 sowie die in den genannten Abbildungen dargestellten Gleitschienenstützeinheiten 33, 33a, 34, 34a, 35, 35a, 96, 96a sind allesamt Teile eines Stützeinheitenbaukastens, auf den bei der anwendungsfallbezogenen Gestaltung des Spannbockes 24 sowie der Gleitschienenstützen 44, 94 zurückgegriffen wird. In diesem Stützeinheitenbaukasten enthalten sind baulich kategorisierte Spannbacken- und Gleitschienenstützeinheiten. Bezüglich der Abmessung in Querrichtung der Biegeachse 8 bzw. in Querrichtung des zu bearbeitenden Rohres 4 stehen insgesamt drei Kategorien von Stützeinheiten zur Verfügung. Der Kategorie mit der größten Erstreckung ist die Spannbackenstützeinheit 30, der Kategorie mit der mittleren Erstreckung sind die Gleitschienenstützeinheiten 96, 96a und der Kategorie mit der kleinsten Erstreckung sind die Spannbackenstützeinheiten 28, 29 sowie die Gleitschienenstützeinheiten 33, 33a, 34, 34a und 35, 35a zuzuordnen. Gleitschienen- und Spannbackenstützeinheiten sind aufgrund ihrer baulichen Übereinstimmung untereinander austauschbar. Bezüglich der Bauhöhe in Richtung der Biegeachse 8 umfasst der Stützeinheitenbaukasten zwei Kategorien. Alternativ zu den in den Abbildungen 1 bis 8 gezeigten und die gleiche Bauhöhe aufweisenden Stützeinheiten stehen noch Stützeinheiten mit größerer Bauhöhe zur Verfügung.The in Figs. 1-8 shown jaw support units 28, 29, 30 as well as the slide rail support units 33, 33a, 34, 34a, 35, 35a, 96, 96a shown in the cited figures are all parts of a support unit construction kit, in the case of application related design of the clamping bracket 24 and the Slide rail supports 44, 94 is used. Included in this support unit kit are structurally categorized jaw and slide support units. With respect to the dimension in the transverse direction of the bending axis 8 and in the transverse direction of the pipe 4 to be processed, a total of three categories of support units are available. The largest extension category is the jaw support unit 30 of the medium extension category. The slide rail support units 96, 96a and the smallest extension category are the jaw support units 28, 29 and the slide rail support units 33, 33a, 34, 34a and 35, 35a assigned. Slide rail and jaw support units are interchangeable due to their structural conformity. With regard to the overall height in the direction of the bending axis 8, the support unit construction kit comprises two categories. Alternatively to the in Figures 1 to 8 shown and the same height having support units are still support units with greater height available.

Beim Rüsten der betreffenden Biegeeinrichtung kann der Maschinenbediener somit auf einen Fundus von Stützeinheiten zurückgreifen, unter denen er in Abhängigkeit von den Erfordernissen der durchzuführenden Werkstückbearbeitung eine Auswahl zu treffen hat. Die Spannbacken 9, 10, 11 sowie die Gleitschienen 18, 19, 20 sind an den ausgewählten Stützeinheiten anzubringen. Zum Rüsten der Biegeeinrichtung 1, 51 kann überdies eine Justage der Spannbacken 9, 10, 11 in Querrichtung der Biegeachse 8 und/oder eine Justage der Gleitschienen 18, 19, 20 in Querrichtung des zu bearbeitenden Rohres 4 vorzunehmen sein. Der Veranschaulichung der bestehenden Einstellmöglichkeiten dienen die Fign. 9, 10.When setting up the relevant bending device, the machine operator can thus resort to a fund of support units, under which he has to make a choice depending on the requirements of the workpiece machining to be performed. The clamping jaws 9, 10, 11 and the slide rails 18, 19, 20 are to be attached to the selected support units. To set up the bending device 1, 51, an adjustment of the clamping jaws 9, 10, 11 in the transverse direction of the bending axis 8 and / or an adjustment of the slide rails 18, 19, 20 in the transverse direction of the pipe to be machined 4 can also be made. The illustration of the existing setting options are shown in FIGS. 9, 10.

Aus diesen Abbildungen ersichtlich ist die Verstellbarkeit der Spannbacken 9, 10, 11 sowie der Gleitschienen 18, 19, 20 gegenüber dem sie lagernden Spannbock 24 bzw. gegenüber der Gleitschienenstütze 94. In dem dargestellten Beispielsfall werden die Spannbacken 9, 10, 11 an den Spannbackenstützeinheiten 28, 29, 30 und die Gleitschienen 18, 19, 20 an den Gleitschienenstützeinheiten 33, 33a, 34, 34a, 96, 96a jeweils mittels an den Spannbacken 9, 10, 11 bzw. den Gleitschienen 18, 19, 20 vorgesehener Schraubenbolzen mit Stellgewinde angebracht. Alternativ besteht die Möglichkeit, zwischen den Spannbacken 9, 10, 11 und den Gleitschienen 18, 19, 20 einerseits sowie den zugehörigen Spannbacken- und Gleitschienenstützeinheiten 28, 29, 30, 33, 33a, 34, 34a, 96, 96a andererseits separate Justiervorrichtungen anzuordnen. Auch ist es denkbar, die von den Biegewerkzeugteilen und der jeweils zugeordneten Stützeinheit niveauweise gebildeten Baueinheiten relativ zueinander verstellbar auszuführen.The displaceability of the clamping jaws 9, 10, 11 and the slide rails 18, 19, 20 relative to the slide bracket 24 supporting them is apparent from these figures. In the example shown, the clamping jaws 9, 10, 11 are attached to the clamping jaw support units 28, 29, 30 and the slide rails 18, 19, 20 on the Gleitschienenstützeinheiten 33, 33 a, 34, 34 a, 96, 96 a respectively by means of the clamping jaws 9, 10, 11 and the slide rails 18, 19, 20 provided with threaded bolts appropriate. alternative it is possible, between the clamping jaws 9, 10, 11 and the slide rails 18, 19, 20 on the one hand and the associated jaw and slide rail support units 28, 29, 30, 33, 33a, 34, 34a, 96, 96a on the other hand to arrange separate adjusting devices. It is also conceivable to carry out the units formed in a level-wise manner by the bending tool parts and the respective associated support unit so as to be adjustable relative to each other.

Die bestehenden Einstellmöglichkeiten können zur Feinjustage auf den einzelnen Biegeniveaus dienen, lassen sich,aber auch zur zweckentsprechenden Positionsänderung der Spannbacken 9, 10, 11 sowie der Gleitschienen 18, 19, 20 beim Austausch von Biegeformen gegen Biegeformen mit anderem Durchmesser bzw. Biegeradius nutzen.The existing adjustment options can be used for fine adjustment on the individual bending levels, but can also be used for the appropriate positional change of the clamping jaws 9, 10, 11 and the slide rails 18, 19, 20 in the exchange of bending forms against bending shapes with different diameter or bending radius.

Claims (12)

  1. Bending device for a bending machine for bending rod-like and/or bar-like workpieces, in particular pipes (4), having at least one multi-level bending tool (3, 53), on which a plurality of bending levels are formed which are located one above the other in the direction of a bending axis (8), there being provided, for each bending level, a bending die (5, 6, 7; 55, 56, 57) and at least one clamping jaw (9, 10, 11) which is associated with the relevant bending die (5, 6, 7; 55, 56, 57) and which can be moved in a transverse direction of the bending axis (8) into at least one operating position which is close to the bending die and at least one non-operational position which is remote from the bending die, and the clamping jaws (9, 10, 11) being supported, at the side remote from the bending die(s) (5, 6, 7; 55, 56, 57), the support being effective in the transverse direction of the bending axis (8), on a clamping jaw support (24) which can be moved with the clamping jaws (9, 10, 11) in the transverse direction of the bending axis (8), characterised in that the clamping jaw support (24) comprises a plurality of clamping jaw support units (28, 29, 30) which are arranged one above the other in the direction of the bending axis (8) and which are releasably connected to each other, with clamping jaw support units (28, 29, 30) being distributed in terms of their association on different bending levels.
  2. Bending device according to claim 1, characterised in that at least one clamping jaw (9, 10, 11) is provided in each case for the different bending levels, and in that clamping jaw support units (28, 29, 30) are distributed in terms of their association on the clamping jaws (9, 10, 11) of the different bending levels.
  3. Bending device for a bending machine for bending rod-like and/or bar-like workpieces, in particular pipes (4), having at least one multi-level bending tool (3, 53), on which a plurality of bending levels are formed which are located one above the other in the direction of a bending axis (8), a bending die (5, 6, 7; 55, 56, 57) and at least one sliding rail (18, 19, 20) for supporting the workpiece in a transverse direction of the workpiece being provided for each bending level, and the sliding rails (18, 19, 20) being supported at the side remote from the workpiece on a sliding rail support (44, 94), the support of the sliding rails being effective in the transverse direction of the workpiece, characterised in that the sliding rail support (44, 94) comprises a plurality of sliding rail support units (33, 33a, 34, 34a, 35, 35a, 96, 96a) which are arranged one above the other in the direction of the bending axis (8) and which are releasably connected to each other, sliding rail support units (33, 33a, 34, 34a, 35, 35a, 96, 96a) being distributed in terms of their association on different bending levels.
  4. Bending device according to claim 3, characterised in that at least one sliding rail (18, 19, 20) is provided in each case for the different bending levels and in that sliding rail support units (33, 33a, 34, 34a, 35, 35a, 96, 96a) are distributed in terms of their association on the sliding rails (18, 19, 20) of the different bending levels.
  5. Bending device according to claim 3 or 4, characterised in that there is provided, for each bending level, a clamping jaw (9, 10, 11) which is associated with the respective bending die (5, 6, 7; 55, 56, 57) and which can be moved in the transverse direction of the bending axis (8) into at least one operating position which is close to the bending die and at least one non-operating position which is remote from the bending die, and in that the clamping jaws (9, 10, 11) are supported, at the side remote from the bending die(s) (5, 6, 7; 55, 56, 57, the support being effective in the transverse direction of the bending axis (8) on a clamping jaw support (24) which can be moved with the clamping jaws (9, 10, 11) in the transverse direction of the bending axis (8), and in that the clamping jaw support (24) comprises a plurality of clamping jaw support units (28, 29, 30) which are arranged one above the other in the direction of the bending axis (8) and which are releasably connected to each other, with clamping jaw support units (28, 29, 30) being distributed in terms of their association on different bending levels.
  6. Bending device according to claim 5, characterised in that at least one clamping jaw (9, 10, 11) is provided in each case for the different bending levels, and in that clamping jaw support units (28, 29, 30) are distributed in terms of their association on the clamping jaws (9, 10, 11) of the different bending levels.
  7. Bending device according to claim 5 or 6, characterised in that at least one clamping jaw support unit (28, 29, 30) and at least one sliding rail support unit (33, 33a, 34, 34a, 35, 35a, 96, 96a) are constructed so as be uniform in structural terms.
  8. Bending device according to either claim 1 or claim 2, or claims 5 to 7, characterised in that at least one clamping jaw (9, 10, 11) of at least one bending level is supported on the associated clamping jaw support unit (s) (28, 29, 30), so as to be adjustable in particular in the transverse direction of the bending axis (8).
  9. Bending device according to any one of claims 3 to 8, characterised in that at least one sliding rail (18, 19, 20) of at least one bending level is supported on the associated sliding rail support unit(s) (33, 33a, 34, 34a, 35, 35a, 96, 96a), so as to be adjustable in particular in the transverse direction of the workpiece.
  10. Bending device according to at least one of the preceding claims, characterised in that clamping jaw support units (23, 29, 30) and/or sliding rail support units (33, 33a, 34, 34a, 35, 35a, 96, 96a) are categorised in structural terms.
  11. Bending device according to claim 10, characterised in that clamping jaw support units (28, 29, 30) are categorised in structural terms relative to their extent in the transverse direction of the bending axis (8) and/or sliding rail support units (33, 33a, 34, 34a, 35, 35a, 96, 96a) are categorised in structural terms relative to their extent in the transverse direction of the workpiece.
  12. Bending device according to claim 10 or 11, characterised in that clamping jaw support units (28, 29, 30) and/or sliding rail support units (33, 33a, 34, 34a, 35, 35a, 96, 96a) are categorised in structural terms relative to their extent in the direction of the bending axis (8).
EP03005461A 2003-03-15 2003-03-15 Bending device with multi-level bending tool, clamping jaw unit and sliding support unit for such a bending device Expired - Lifetime EP1459816B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP03005461A EP1459816B1 (en) 2003-03-15 2003-03-15 Bending device with multi-level bending tool, clamping jaw unit and sliding support unit for such a bending device
DE50304940T DE50304940D1 (en) 2003-03-15 2003-03-15 Bending device with multi-level bending tool and clamping jaw and slide rail support unit for such a bending device
ES03005461T ES2272828T3 (en) 2003-03-15 2003-03-15 FOLDING DEVICE WITH MULTIPLE LEVEL FOLDING TOOL, A CLAMP AND A MOVABLE SUPPORT UNIT FOR SUCH FOLDING DEVICE.
US10/800,589 US7024903B2 (en) 2003-03-15 2004-03-15 Bending system with multilevel bending tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP03005461A EP1459816B1 (en) 2003-03-15 2003-03-15 Bending device with multi-level bending tool, clamping jaw unit and sliding support unit for such a bending device

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EP1459816A1 EP1459816A1 (en) 2004-09-22
EP1459816B1 true EP1459816B1 (en) 2006-09-06

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US (1) US7024903B2 (en)
EP (1) EP1459816B1 (en)
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ES2272828T3 (en) 2007-05-01
US7024903B2 (en) 2006-04-11
US20040200253A1 (en) 2004-10-14
EP1459816A1 (en) 2004-09-22
DE50304940D1 (en) 2006-10-19

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