EP1767285B1 - Bending tool for hydraulic fittings - Google Patents

Bending tool for hydraulic fittings Download PDF

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Publication number
EP1767285B1
EP1767285B1 EP06119537A EP06119537A EP1767285B1 EP 1767285 B1 EP1767285 B1 EP 1767285B1 EP 06119537 A EP06119537 A EP 06119537A EP 06119537 A EP06119537 A EP 06119537A EP 1767285 B1 EP1767285 B1 EP 1767285B1
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EP
European Patent Office
Prior art keywords
clamping
bending
bending tool
clamping piece
tool according
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
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EP06119537A
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German (de)
French (fr)
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EP1767285A8 (en
EP1767285A1 (en
Inventor
Kornelius Siemens
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Dipl Ing H Schulz HDS Hydraulic GmbH and Co KG
Original Assignee
H Schulz Hds Hydraulik & GmbH
Dipl Ing H Schulz HDS Hydraulic GmbH and Co KG
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Priority to PL06119537T priority Critical patent/PL1767285T3/en
Publication of EP1767285A1 publication Critical patent/EP1767285A1/en
Publication of EP1767285A8 publication Critical patent/EP1767285A8/en
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Publication of EP1767285B1 publication Critical patent/EP1767285B1/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

Definitions

  • the present invention relates to a bending tool for bending hydraulic arc fittings according to the preamble of claim 1.
  • a bending tool is known from the EP-A-0319400 known.
  • connection fittings For connection of relatively movable printing units, for example in construction machines, such as excavator arms, flexible, pressure-resistant hydraulic lines are required to supply movable drive cylinders with pressure medium. These cables are assembled with two end connection fittings. In many cases, at least one of the connection fittings is designed as a curved with a certain bending angle bend fitting to achieve a possible kink-free and possibly curved with the largest possible radius course of the line in the connected state. Each curved fitting consists of a curved tubular shaft and two opposite, thickened end portions with flange-like connecting elements.
  • the EP 0 737 526 A1 describes several different versions of a bending device for pipes, but especially only for longer, continuous pipes without end, by z. B. flange-type connecting elements thickened end portions.
  • Such simple tubes can - depending on the course of a dividing plane between the bending head and clamping piece - be bent by up to 180 ° or even more.
  • the known bending device is not suitable for bow fittings of the type explained here.
  • the known device In the tube clamping region, the known device has at least one additional clamping wedge, which can be inserted in the tube longitudinal direction into a corresponding recess in order to improve the clamping of the tube.
  • the present invention has for its object to provide a bending tool of the type mentioned in the preamble of claim 1, which is also suitable for bending bow fittings with a bending angle over 90 ° with structurally simple means and without disassembly.
  • the bending head in the clamping area has a displaceable relative to the thickened end region of the curved curved armature in the axial direction of the first end area in order to provide a clearance clearance Clamp on.
  • An inventive bending tool 1 is designed for bending hydraulic bow fittings.
  • a bow fitting 2 is exemplified in Fig. 3 shown. It consists of a tubular shaft 4 and two end portions 6, 8. In the end regions 6, 8 flange-like thickenings are present as connection or connection elements.
  • the shaft 4 of the curved fitting 2 is bent or bent at a certain bending angle ⁇ .
  • the bending tool 1 consists of a bending head 10 with a groove or channel-like, corresponding to a desired bending contour of the shaft 4 extending shank receptacle 12 and a clamping portion 14 for the first end portion 6 of the curved armature 2. Furthermore, the bending tool 1 consists of a clamping in the 14th for clamping the first end portion 6 of the curved armature 2 in the direction of arrow 15a against the bending head 10 pressable clamping piece 16 and a jib 18 for supporting conditioning of the second end portion 8 of the curved armature 2 during the bending process (see Fig. 3 ). The clamping piece 16 can be moved away from the bending head 10 after the bending operation in the direction of arrow 15b.
  • the bending head 10 in the clamping area 14 has a clamping carriage 24 displaceable relative to the curved curved armature 2 in order to provide a clearance clearance.
  • This clamping slide 24 is displaceable in the axial direction of the first end portion 6 of the curved armature 2 and in the direction of the adjacent shaft 4, preferably against spring force from a starting position for the bending operation in the direction of arrow 27 in a release position for removing the curved curved armature 2.
  • To generate the return -Federkraft is between the bending head 10 and the clamping slide 24 at least one compression spring 26, but preferably two compression springs 26, arranged (see Fig. 2 and 3 ).
  • a locking device 28 is provided such that the clamping slide 24 is blocked in the tensioned state of the clamping piece 16 against displacement and only after release of the clamping piece 16 is released to move.
  • the locking device 28 positive locking elements (30, 32) between the clamping piece 16 and the clamping slide 24 such that the positive-locking elements in the tensioned state of the clamping piece 16 (FIG. Fig. 2 ) in engagement and in the released state are at least as far out of engagement that the clamping slide 24 to create the release clearance in the direction of arrow 27 is displaceable.
  • the described form-locking elements consist in the illustrated embodiment of at least one approach 30 and a corresponding, the approach 30 receiving recess 32.
  • the Approach 30 aligned according to the direction of a clamping movement axis 34 of the clamping piece 16 (see Fig. 1 ).
  • the clamping slide 24 has the at least one projection 30 and the clamping piece 16 has the corresponding recess 32.
  • the shank receptacle 12 in the clamping area 14 enclosing clamping slide 24 with two lugs 30 in corresponding recesses 32 of the clamping piece 16 a; please refer Fig. 2 ,
  • the engagement contour of the interlocking elements 30, 32 is designed so that when dissolved clamping piece 16 sufficient movement play for moving the clamping carriage 24 is formed. According to Fig. 1 This can be realized by sloping edges 36 for expanding the recesses 32. In the tensioned state of the clamping piece 16, a positive locking of the clamping carriage 24 is ensured against displacement in the direction of arrow 27 by the interlocking elements 30, 32.
  • the clamping slide 24 is connected via a sliding guide 38 with the bending head 10.
  • the sliding guide 38 is designed in the form of a T-connection. Also, a dovetail joint or the like is suitable.

Abstract

The tool has folding head (10) with a shaft receptacle (12) for bending a shaft along its outline. A clamping unit (16) is provided in a clamping area of a curved armature that can be bent. The clamping unit is pressable in the clamping area for clamping an end area of the shaft against the folding head. The folding head has a clamping slide in the clamping area, where slide is adjustable for loosening the curved armature.

Description

Die vorliegende Erfindung betrifft ein Biegewerkzeug zum Biegen von Hydraulik-Bogenarmaturen nach dem Oberbegriff des Anspruchs 1. Ein solches Biegewerkzeug ist aus dem EP-A-0319400 bekannt.The present invention relates to a bending tool for bending hydraulic arc fittings according to the preamble of claim 1. Such a bending tool is known from the EP-A-0319400 known.

Zur Verbindung von relativ zueinander beweglichen Druckaggregaten, beispielsweise bei Baumaschinen, wie Bagger-Armen, werden zur Versorgung von beweglichen Antriebszylindern mit Druckmittel flexible, druckfeste Hydraulikleitungen benötigt. Diese Leitungen sind mit zwei endseitigen Anschlussarmaturen konfektioniert. In vielen Fällen ist mindestens eine der Anschlussarmaturen als eine mit einem bestimmten Biegungswinkel gekrümmte Bogenarmatur ausgebildet, um im angeschlossenen Zustand einen möglichst knickfreien und allenfalls mit möglichst großem Radius gekrümmten Verlauf der Leitung zu erreichen. Jede Bogenarmatur besteht aus einem gebogenen rohrförmigen Schaft und zwei gegenüberliegenden, verdickten Endbereichen mit flanschartigen Verbindungselementen.For connection of relatively movable printing units, for example in construction machines, such as excavator arms, flexible, pressure-resistant hydraulic lines are required to supply movable drive cylinders with pressure medium. These cables are assembled with two end connection fittings. In many cases, at least one of the connection fittings is designed as a curved with a certain bending angle bend fitting to achieve a possible kink-free and possibly curved with the largest possible radius course of the line in the connected state. Each curved fitting consists of a curved tubular shaft and two opposite, thickened end portions with flange-like connecting elements.

Solche Bogenarmaturen werden mit Biegewerkzeugen der genannten, gattungsgemäßen Art gebogen. Bisher war dies mit bekannten Biegewerkzeugen ohne eine Demontage des Werkzeuges (z. B. ohne Auseinanderschrauben) nur bis zu einem maximalen Biegungswinkel von bis zu 90° möglich.Such bow fittings are bent with bending tools of the aforementioned generic type. So far, this has been possible with known bending tools without disassembly of the tool (eg without unscrewing) only up to a maximum bending angle of up to 90 °.

Die EP 0 737 526 A1 beschreibt mehrere verschiedene Ausführungen einer Biegevorrichtung für Rohre, allerdings speziell nur für längere, durchgehende Rohre ohne endseitige, durch z. B. flanschartige Verbindungselemente verdickte Endbereiche. Solche einfachen Rohre können - je nach Verlauf einer Teilungsebene zwischen Biegekopf und Spannstück - um bis zu 180° oder sogar mehr umgebogen werden. Die bekannte Biegevorrichtung ist allerdings für Bogenarmaturen der hier erläuterten Art nicht geeignet. Im Rohr-Einspannbereich weist die bekannte Vorrichtung mindestens einen zusätzlichen Spannkeil auf, der in Rohr-Längsrichtung in eine korrespondierende Ausnehmung einschiebbar ist, um die Einspannung des Rohres zu verbessern.The EP 0 737 526 A1 describes several different versions of a bending device for pipes, but especially only for longer, continuous pipes without end, by z. B. flange-type connecting elements thickened end portions. Such simple tubes can - depending on the course of a dividing plane between the bending head and clamping piece - be bent by up to 180 ° or even more. However, the known bending device is not suitable for bow fittings of the type explained here. In the tube clamping region, the known device has at least one additional clamping wedge, which can be inserted in the tube longitudinal direction into a corresponding recess in order to improve the clamping of the tube.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, ein Biegewerkzeug der im Oberbegriff des Anspruchs 1 genannten Art zu schaffen, welches mit konstruktiv einfachen Mitteln und ohne Demontage auch zum Biegen von Bogenarmaturen mit einem Biegungswinkel über 90° geeignet ist.The present invention has for its object to provide a bending tool of the type mentioned in the preamble of claim 1, which is also suitable for bending bow fittings with a bending angle over 90 ° with structurally simple means and without disassembly.

Erfindungsgemäß wird dies durch die Merkmale des Anspruchs 1 erreicht. Vorteilhafte Ausgestaltungen der Erfindung sind in den abhängigen Ansprüchen enthalten.This is achieved by the features of claim 1 according to the invention. Advantageous embodiments of the invention are contained in the dependent claims.

Demnach weist erfindungsgemäß der Biegekopf im Einspannbereich einen zur Schaffung eines Lösespiels relativ zu dem verdickten Endbereich der gebogenen Bogenarmatur in Achsrichtung des ersten Endbereiches verschiebbaren Spannschlitten auf. Durch diese sehr einfache aber wirkungsvolle Maßnahme wird erreicht, dass die Bogenarmatur mit ihrem durch das flanschartige Anschlusselement verdickten Endbereich durch eine Lösebewegung des Spannschlittens so freigegeben wird, dass sie nachfolgend mit dem gebogenen Schaft aus der Rohr-Aufnahme entnommen werden kann.Accordingly, according to the invention, the bending head in the clamping area has a displaceable relative to the thickened end region of the curved curved armature in the axial direction of the first end area in order to provide a clearance clearance Clamp on. By this very simple but effective measure is achieved that the curved armature is released with its thickened by the flange-like connection element end portion by a release movement of the clamping slide so that it can be subsequently removed with the bent shaft of the pipe receptacle.

Anhand eines bevorzugten, in der Zeichnung veranschaulichten Ausführungsbeispiels soll die Erfindung genauer erläutert werden. Dabei zeigen:

Fig. 1
eine Perspektivansicht eines erfindungsgemäßen Biegewerkzeugs,
Fig. 2
einen Schnitt in der Ebene II - II gemäß Fig. 1 und
Fig. 3
einen Schnitt in der Ebene III - III gemäß Fig. 2 während bzw. nach einem Biegevorgang mit einer gebogenen Bogenarmatur zur Erläuterung des Vorgangs zur Freigabe.
Reference to a preferred embodiment illustrated in the drawings, the invention will be explained in more detail. Showing:
Fig. 1
a perspective view of a bending tool according to the invention,
Fig. 2
a section in the plane II - II according to Fig. 1 and
Fig. 3
a section in the level III - III according to Fig. 2 during or after a bending operation with a curved bow fitting to explain the process for release.

In den verschiedenen Figuren der Zeichnung sind gleiche Teile stets mit den gleichen Bezugszeichen versehen.In the various figures of the drawing, like parts are always provided with the same reference numerals.

Ein erfindungsgemäßes Biegewerkzeug 1 ist zum Biegen von Hydraulik-Bogenarmaturen konzipiert. Eine solche Bogenarmatur 2 ist beispielhaft in Fig. 3 dargestellt. Sie besteht aus einem rohrförmigen Schaft 4 und zwei Endbereichen 6, 8. In den Endbereichen 6, 8 sind flanschartige Verdickungen als Verbindungs- bzw. Anschlusselemente vorhanden. Der Schaft 4 der Bogenarmatur 2 ist mit einem bestimmten Biegewinkel α gebogen bzw. zu biegen.An inventive bending tool 1 is designed for bending hydraulic bow fittings. Such a bow fitting 2 is exemplified in Fig. 3 shown. It consists of a tubular shaft 4 and two end portions 6, 8. In the end regions 6, 8 flange-like thickenings are present as connection or connection elements. The shaft 4 of the curved fitting 2 is bent or bent at a certain bending angle α.

Gemäß Fig. 1 bis 3 besteht das Biegewerkzeug 1 aus einem Biegekopf 10 mit einer nut- oder rinnenartigen, entsprechend einer gewünschten Biegekontur des Schaftes 4 verlaufenden Schaft-Aufnahme 12 und einem Einspannbereich 14 für den ersten Endbereich 6 der Bogenarmatur 2. Weiterhin besteht das Biegewerkzeug 1 aus einem im Einspannbereich 14 zum Einspannen des ersten Endbereichs 6 der Bogenarmatur 2 in Pfeilrichtung 15a gegen den Biegekopf 10 pressbaren Spannstück 16 sowie einem Anlegestück 18 zur abstützenden Anlage des zweiten Endbereichs 8 der Bogenarmatur 2 während des Biegevorgangs (siehe hierzu Fig. 3). Das Spannstück 16 ist nach dem Biegevorgang in Pfeilrichtung 15b vom Biegekopf 10 wegbewegbar.According to Fig. 1 to 3 the bending tool 1 consists of a bending head 10 with a groove or channel-like, corresponding to a desired bending contour of the shaft 4 extending shank receptacle 12 and a clamping portion 14 for the first end portion 6 of the curved armature 2. Furthermore, the bending tool 1 consists of a clamping in the 14th for clamping the first end portion 6 of the curved armature 2 in the direction of arrow 15a against the bending head 10 pressable clamping piece 16 and a jib 18 for supporting conditioning of the second end portion 8 of the curved armature 2 during the bending process (see Fig. 3 ). The clamping piece 16 can be moved away from the bending head 10 after the bending operation in the direction of arrow 15b.

Zum Biegen des Schaftes 4 sind der Biegekopf 10 und das Anlagestück 18 relativ zueinander entsprechend der in Fig. 1 und 3 eingezeichneten Pfeile 20 verschwenkbar. Wie sich dabei aus Fig. 3 ergibt, war es bisher bei einem Biegewinkel α > 90° nicht ohne Weiteres möglich, die Armatur 2 aus dem Werkzeug 1 zu entnehmen, weil der erste Endbereich 6 aufgrund von radialen Kanten 22 nicht aus der Kontur im Einspannbereich 14 des Biegekopfes 10 gelöst werden konnte. Daher waren - ohne Demontage des Werkzeugs - nur Biegewinkel α ≤ 90° möglich.For bending the shaft 4, the bending head 10 and the abutment piece 18 are relative to each other according to the in Fig. 1 and 3 Plotted arrows 20 pivotally. As it turned out Fig. 3 results, it was previously at a bending angle α> 90 ° not readily possible to remove the fitting 2 from the tool 1, because the first end portion 6 could not be solved from the contour in the clamping portion 14 of the bending head 10 due to radial edges 22 , Therefore - without disassembly of the tool - only bending angle α ≤ 90 ° possible.

Erfindungsgemäß weist nun der Biegekopf 10 im Einspannbereich 14 einen zur Schaffung eines Lösespiels relativ zu der gebogenen Bogenarmatur 2 verschiebbaren Spannschlitten 24 auf. Dieser Spannschlitten 24 ist in Achsrichtung des ersten Endbereichs 6 der Bogenarmatur 2 und in Richtung des angrenzenden Schaftes 4 verschiebbar, und zwar bevorzugt gegen Federkraft aus einer Ausgangsstellung für den Biegevorgang in Pfeilrichtung 27 in eine Lösestellung zum Entnehmen der gebogenen Bogenarmatur 2. Zur Erzeugung der Rückstell-Federkraft ist zwischen dem Biegekopf 10 und dem Spannschlitten 24 mindestens eine Druckfeder 26, bevorzugt aber zwei Druckfedern 26, angeordnet (siehe hierzu Fig. 2 und 3).According to the invention, the bending head 10 in the clamping area 14 has a clamping carriage 24 displaceable relative to the curved curved armature 2 in order to provide a clearance clearance. This clamping slide 24 is displaceable in the axial direction of the first end portion 6 of the curved armature 2 and in the direction of the adjacent shaft 4, preferably against spring force from a starting position for the bending operation in the direction of arrow 27 in a release position for removing the curved curved armature 2. To generate the return -Federkraft is between the bending head 10 and the clamping slide 24 at least one compression spring 26, but preferably two compression springs 26, arranged (see Fig. 2 and 3 ).

Durch Verschieben des Spannschlittens 24 in die Lösestellung entsteht zur Bogenarmatur 2 ein Lösespiel, so dass deren radialen Kanten 22 aus der inneren Kontur im Einspannbereich 14 freikommen und dann die Bogenarmatur 2 in Pfeilrichtung 29 aus der Schaft-Aufnahme 12 entnommen werden kann (Fig. 3). Dadurch sind maximale Biegewinkel α im Bereich von 150° bis 160° möglich.By moving the tensioning slide 24 into the release position, a release clearance is created for the bow fitting 2 so that its radial edges 22 can be released from the inner contour in the clamping area 14 and then the curved fitting 2 can be removed from the shaft receptacle 12 in the direction of the arrow 29 ( Fig. 3 ). As a result, maximum bending angle α in the range of 150 ° to 160 ° are possible.

In weiterer vorteilhafter Ausgestaltung der Erfindung ist eine Sperreinrichtung 28 derart vorgesehen, dass der Spannschlitten 24 im gespannten Zustand des Spannstückes 16 gegen Verschieben blockiert ist und erst nach Lösen des Spannstückes 16 zum Verschieben freigegeben wird. Wie sich aus Fig. 1 und 2 ergibt, weist die Sperreinrichtung 28 Formschlusselemente (30, 32) zwischen dem Spannstück 16 und dem Spannschlitten 24 derart auf, dass die Formschlusselemente im gespannten Zustand des Spannstückes 16 (Fig. 2) in Eingriff und im gelösten Zustand zumindest soweit außer Eingriff sind, dass der Spannschlitten 24 zur Schaffung des Lösespiels in Pfeilrichtung 27 verschiebbar ist. Die beschriebenen Formschlusselemente bestehen im dargestellten Ausführungsbeispiel aus mindestens einem Ansatz 30 und einer korrespondierenden, den Ansatz 30 aufnehmenden Ausnehmung 32. Dabei ist der Ansatz 30 entsprechend der Richtung einer Spannbewegungsachse 34 des Spannstückes 16 ausgerichtet (siehe Fig. 1). Bei der bevorzugten, dargestellten Ausführung weist der Spannschlitten 24 den mindestens einen Ansatz 30 und das Spannstück 16 die korrespondierende Ausnehmung 32 auf. Vorzugsweise greift dabei der im Querschnitt C-förmige, die Schaft-Aufnahme 12 im Einspannbereich 14 umschließende Spannschlitten 24 mit zwei Ansätzen 30 in korrespondierende Ausnehmungen 32 des Spannstückes 16 ein; siehe Fig. 2.In a further advantageous embodiment of the invention, a locking device 28 is provided such that the clamping slide 24 is blocked in the tensioned state of the clamping piece 16 against displacement and only after release of the clamping piece 16 is released to move. As it turned out Fig. 1 and 2 shows, the locking device 28 positive locking elements (30, 32) between the clamping piece 16 and the clamping slide 24 such that the positive-locking elements in the tensioned state of the clamping piece 16 (FIG. Fig. 2 ) in engagement and in the released state are at least as far out of engagement that the clamping slide 24 to create the release clearance in the direction of arrow 27 is displaceable. The described form-locking elements consist in the illustrated embodiment of at least one approach 30 and a corresponding, the approach 30 receiving recess 32. In this case, the Approach 30 aligned according to the direction of a clamping movement axis 34 of the clamping piece 16 (see Fig. 1 ). In the preferred embodiment illustrated, the clamping slide 24 has the at least one projection 30 and the clamping piece 16 has the corresponding recess 32. Preferably engages the cross-sectionally C-shaped, the shank receptacle 12 in the clamping area 14 enclosing clamping slide 24 with two lugs 30 in corresponding recesses 32 of the clamping piece 16 a; please refer Fig. 2 ,

Natürlich ist auch eine umgekehrte Ausführung möglich, wobei vorzugsweise das im Querschnitt etwa C-förmige, den Einspannbereich umschließende Spannstück 16 mit zwei Ansätzen in korrespondierende Ausnehmungen des Spannschlittens eingreift.Of course, a reverse embodiment is possible, wherein preferably in cross-section approximately C-shaped, the clamping area enclosing clamping piece 16 engages with two lugs in corresponding recesses of the clamping slide.

In allen Fällen ist die Eingriff-Kontur der Formschlusselemente 30, 32 so ausgelegt, dass bei gelöstem Spannstück 16 ein ausreichendes Bewegungsspiel zum Verschieben des Spannschlittens 24 entsteht. Gemäß Fig. 1 kann dies durch schräge Kanten 36 zur Erweiterung der Ausnehmungen 32 realisiert werden. Im gespannten Zustand des Spannstückes 16 wird durch die Formschlusselemente 30, 32 eine formschlüssige Blockierung des Spannschlittens 24 gegen Verschiebung in Pfeilrichtung 27 gewährleistet.In all cases, the engagement contour of the interlocking elements 30, 32 is designed so that when dissolved clamping piece 16 sufficient movement play for moving the clamping carriage 24 is formed. According to Fig. 1 This can be realized by sloping edges 36 for expanding the recesses 32. In the tensioned state of the clamping piece 16, a positive locking of the clamping carriage 24 is ensured against displacement in the direction of arrow 27 by the interlocking elements 30, 32.

Wie sich schließlich noch aus Fig. 1 und 2 ergibt, ist der Spannschlitten 24 über eine Schiebeführung 38 mit dem Biegekopf 10 verbunden. Bei der dargestellten Ausführung ist die Schiebeführung 38 in Form einer T-Verbindung ausgeführt. Ebenfalls ist auch eine Schwalbenschwanzverbindung oder dergleichen geeignet.Finally, it's still out Fig. 1 and 2 results, the clamping slide 24 is connected via a sliding guide 38 with the bending head 10. In the illustrated embodiment, the sliding guide 38 is designed in the form of a T-connection. Also, a dovetail joint or the like is suitable.

Claims (8)

  1. A bending tool (1) for bending a tubular shaft (4) of an hydraulic curved fitting (2), having a bending head (10) with a channel-like shaft receiver (12) extending in accordance with a desired bend contour of the shaft (4) and a gripping region (14) for a first end region (6), thickened compared with the shaft (4), of the curved fitting (2) to be bent and having a clamping piece (16) pressable towards the bending head (10) in the gripping region (14) for gripping the first end region (6) of the curved fitting (2), characterised in that in the gripping region (14), the bending head (10) has a clamping slide (24) displaceable in the axial direction of the first end region (6) in order to create release play relative to the end region (6) of the arcuate curved fitting (2).
  2. A bending tool according to claim 1, characterised in that the clamping slide (24) is displaceable against elastic force from an initial position into a release position.
  3. A bending tool according to claim 1 or 2, characterised by a locking device (28) in such a manner that in the clamped state of the clamping piece (16), the clamping slide (24) is blocked against displacement and is freed for displacement only after release of the clamping piece (16).
  4. A bending tool according to claim 3, characterised in that the blocking device (28) has positive-locking elements (30, 32) between the clamping piece (16) and the clamping slide (24) in such a manner that the positive-locking elements (30, 32) are engaged in the clamped state of the clamping piece (16) and in the released state are disengaged at least to such an extent that the clamping slide (24) is displaceable to create the release play.
  5. A bending tool according to claim 4, characterised in that the positive-locking elements are composed of at least one projection (30) aligned with the direction of a clamping motion axis (34) of the clamping piece (16) and a corresponding recess (32) receiving the projection (30).
  6. A bending tool according to claim 5, characterised in that the clamping slide (24) of substantially C-shaped cross-section engages by means of two projections (30) corresponding recesses (32) in the clamping piece (16).
  7. A bending tool according to claim 5, characterised in that the clamping piece (16) of substantially C-shaped cross-section engages by means of two projections (30) corresponding recesses (32) in the clamping slide (24).
  8. A bending tool according to any one of claims 1 to 7, characterised in that the clamping slide (24) is connected to the bending head (10) via a sliding guide (38), for example in the form of a T-connection or a dovetail connection.
EP06119537A 2005-09-21 2006-08-25 Bending tool for hydraulic fittings Not-in-force EP1767285B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL06119537T PL1767285T3 (en) 2005-09-21 2006-08-25 Bending tool for hydraulic fittings

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202005014938U DE202005014938U1 (en) 2005-09-21 2005-09-21 Bending tool for bending tubular shaft of hydraulic curved armature, has folding head with shaft receptacle for bending shaft along its outline, where head has clamping slide that is adjustable for loosening curved armature

Publications (3)

Publication Number Publication Date
EP1767285A1 EP1767285A1 (en) 2007-03-28
EP1767285A8 EP1767285A8 (en) 2007-08-08
EP1767285B1 true EP1767285B1 (en) 2008-03-19

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Application Number Title Priority Date Filing Date
EP06119537A Not-in-force EP1767285B1 (en) 2005-09-21 2006-08-25 Bending tool for hydraulic fittings

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EP (1) EP1767285B1 (en)
AT (1) ATE389474T1 (en)
DE (2) DE202005014938U1 (en)
PL (1) PL1767285T3 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111545606B (en) * 2020-06-19 2021-12-03 项军炎 Steel pipe bending machining process
CN111545607B (en) * 2020-06-19 2021-12-14 济南科德智能科技有限公司 Steel pipe processing equipment that bends

Citations (1)

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Publication number Priority date Publication date Assignee Title
EP0319400A1 (en) * 1987-12-02 1989-06-07 Societe Nationale D'etude Et De Construction De Moteurs D'aviation, "S.N.E.C.M.A." Pipe conduit bending machine and method of making a pipe conduit with a soldered joint

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US5187963A (en) * 1992-06-12 1993-02-23 Moiron Tube bending die
NL1000150C1 (en) * 1995-04-13 1996-10-15 Busschers Metaalbedrijf Bv Device for bending pipes.

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0319400A1 (en) * 1987-12-02 1989-06-07 Societe Nationale D'etude Et De Construction De Moteurs D'aviation, "S.N.E.C.M.A." Pipe conduit bending machine and method of making a pipe conduit with a soldered joint

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DE502006000490D1 (en) 2008-04-30
ATE389474T1 (en) 2008-04-15
PL1767285T3 (en) 2008-08-29
EP1767285A8 (en) 2007-08-08
DE202005014938U1 (en) 2005-12-22
EP1767285A1 (en) 2007-03-28

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