EP2077165B1 - Sheet metal bending machine - Google Patents
Sheet metal bending machine Download PDFInfo
- Publication number
- EP2077165B1 EP2077165B1 EP08022322A EP08022322A EP2077165B1 EP 2077165 B1 EP2077165 B1 EP 2077165B1 EP 08022322 A EP08022322 A EP 08022322A EP 08022322 A EP08022322 A EP 08022322A EP 2077165 B1 EP2077165 B1 EP 2077165B1
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- EP
- European Patent Office
- Prior art keywords
- sheet
- metal
- row
- bending machine
- rams
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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.)
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- 239000002184 metal Substances 0.000 title claims abstract description 48
- 238000005452 bending Methods 0.000 title claims description 62
- 238000000034 method Methods 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 description 5
- 238000010276 construction Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/01—Bending sheet metal along straight lines, e.g. to form simple curves between rams and anvils or abutments
- B21D5/015—Bending sheet metal along straight lines, e.g. to form simple curves between rams and anvils or abutments for making tubes
Definitions
- the invention relates to a sheet metal bending machine, in particular for the production of pipes, with a bending device comprising a system of dies with in several arranged by a sheet supplied at different distances rows of press shoes, wherein the distances of the press shoes from the respective sheet surface accordingly the contour of the sheet to be bent selected and predetermined or predetermined by a plurality of actuators and wherein a plurality of hydraulically or pneumatically driven forming dies are arranged on the side opposite the mold dies of the sheet to bend the sheet in the set of the mold punches contour.
- a sheet metal bending machine of this kind is in the DE 24 02 190 A1 specified.
- a plurality of rows of stamps directed towards the lower or upper surface of the sheet are arranged over the upper side and the underside of a sheet metal plate supplied via a carrying device, which rows are adjustable at different distances from the sheet metal surface.
- the stamps on the top and bottom of the sheet are each arranged in at least three rows, each row on the top opposite a row on the bottom and the distances between the rows are adjustable.
- the punches are adjustable by means of a screw spindle system on the top and bottom or with a screw system on the one hand and a hydraulic system on the other side, by means of the screw system a certain curvature of the sheet is preset, then the sheet metal plate with the on the other side arranged stamps to press against the preset punch and give it the desired curvature.
- thick sheets are to be bent in this way only with considerable effort.
- Another plate bending machine for pipes is in the EP 0 051 554 A2 shown.
- upper, along the length of the tube extending moldings are provided with the pipe contour corresponding semi-cylindrical recesses, which are moved by means of relatively complex, cylinder having adjusting mechanisms for a pressing operation.
- a similar hydraulic sheet bending press like the EP 0 051 554 A2 also shows the DE 24 55 521 A1 ,
- the sheet For the bending of sheets, for example in the manufacture of hollow bodies and in particular pipes, the sheet, which may have a considerable thickness of several centimeters or even in the range of a decimeter in pipes of large diameter, usually pressed between two fittings. Depending on the contour to be attached, the necessary molds for different dimensions must be exchanged. Such retooling measures restrict the availability of the facilities.
- the invention has for its object to provide a sheet metal bending machine, in particular for the production of pipes, which results in improved operation with reliable operation.
- the actuators are designed as actuating cylinders and that the forming dies are arranged in only one row in the region of an end portion of the sheet adjacent to the sheet edge.
- the desired contour can be precisely adjusted by means of the adjusting cylinders and the press shoes connected thereto.
- the bending operation with a stable structure and simple, accurate control are performed reliably.
- the plurality of rows of mold punches are preferably arranged above the upper side of the sheet, while one row of the mold punches is advantageously arranged on the underside.
- a reverse arrangement of the die punches on the bottom and the bending process exporting punch on the top is conceivable.
- a large bending area is achieved around all rows of mold punches with only a series of dies in just one bending operation.
- pipes of large diameter for example greater than 300 mm or 500 mm
- thick-walled metal sheets of, for example, greater than 30 mm or 50 mm.
- An advantageous embodiment consists in the fact that the row of the forming dies is at most as far away from the sheet metal edge in question as the row of opposite die dies lying closest thereto.
- the bending processing is facilitated by the fact that a clamping device for the metal plate is present, which is arranged parallel to the remote from the sheet edge row of mold punches on their side facing away from the sheet edge side. These measures can support the accuracy of the bending process.
- the clamping device for supporting the metal plate has a lower fixed or height-adjustable support and one of these on the top opposite clamping arrangement for clamping the metal plate against the support.
- the measures contribute that the clamping arrangement is connected to open and close to a hydraulically operating actuator.
- a stable construction and a reliable function are further supported by the fact that the hydraulic drives of the forming dies, in particular designed as further adjusting cylinders, are dimensioned to generate higher forces than the setting cylinders of the forming dies.
- the mold punches are provided with press shoes.
- press shoes With exchangeable press shoes on the mold punches and / or the dies, wear can be easily eliminated or easily adapted to different curvatures.
- curvatures can be predefined in a simple manner, for example by programming via a computer contained in the control device, that there is a control device for adjusting the adjusting cylinders, with which the rows of press shoes in the direction of the rows equidistant from the sheet surface and from row to row to the sheet edge with increasing distance along a straight line or in a convex, in particular circular segment-shaped, curvature can be positioned.
- the control device the bending process can also be suitably controlled via the forming punches with the associated hydraulic or pneumatic drive device, for example also with adjusting cylinders matched to the course of curvature and / or the material (thickness, composition).
- the bending processing operations are facilitated by the fact that the clamping arrangement with its actuator and / or optionally in addition existing supply device for the metal plate connected to the control device and tuned by means of these mutually and / or the bending process is / are.
- the measures are advantageous for the construction of the plate bending machine in that the number of forming dies per row is less than the number of die punches per row. In this way, the structure can be simplified and adapted to different requirements.
- the Fig. Shows a arranged in a sheet metal bending plate B, over the top of several rows of mold punches 1 and below the bottom of a series of dies 3 are arranged.
- the metal plate B which is supplied via a support 14, is fixed stably in a clamping device 10 with a support 11 on the underside and a clamping arrangement 12 on the upper side, wherein the clamping arrangement 12 by means of a preferably hydraulic or pneumatic actuator 13 against the top of Sheet metal B is pressed against the support 11.
- the top of the metal plate B facing end portions of the die 1 are provided with press shoes 1.1, the ends of which are tapered conical or convex rounded to the outside, so that they favor the bending operation according to the set curvature.
- a further press shoe 4 which directed to the lower surface of the metal plate B towards end face is also tapered or convex rounded to the outside, so that at the beginning of the bending work the flat Sheet metal B only punctiform or line-like rests on the press shoe 4 and during the bending process, a change in inclination of the lower sheet surface relative to the end face of the press shoe 4 can proceed unhindered, whereby the bending process is additionally favored.
- the forming dies 1 and the forming dies 3 are preferably actuated by means of hydraulically driven actuators, in particular actuating cylinders 2 and 6, for adjustment to the predetermined curvature on the one hand and for the bending operation on the other hand, wherein the control or regulation of the actuation by means of a control device 5.
- a hydraulic drive in particular for the forming dies 3, a pneumatic drive can be provided.
- press shoes 1.1 and / or further press shoes 4 are exchangeably attached to the end sections of the forming dies 1 or the forming dies 3 in one embodiment, press shoes 1.1, 4 with differently shaped end faces can easily be exchanged for one another, or they can be easily replaced when worn , Also, an adaptation to different materials to be bent metal plates B is made possible by the exchange of press shoes 1.1 and 4 respectively.
- tuning the material combination press shoes / sheet metal plate it is advantageous to choose the coefficient of friction so that a slip resistance is achieved or a good lubricity depending on the bending contour or sheet material, plate thickness or the like.
- the row of forming dies 3 is arranged for the bending operation with the associated drive means on top of the sheet metal plate B, while the rows of mold punches 1 are arranged for setting the curvature under the underside of the sheet metal plate B.
- the control device 5 By means of the control device 5, the setting of the die 1 on the predetermined curvature and the control of the forming dies 3 for the bending process in coordination with each other, including the control of a a programming has suitable computer unit.
- the sheet metal bending machine has a measuring system with a measuring sensor which picks up the contour of the sheet during bending and its data are fed to the control device and processed therein to adjust the bending data.
- the control device 5 advantageously comprises a memory device, are stored in the default values for the processing of certain types of products and are easily retrievable for the operator.
- the clamping device 10 can also be coupled to the control device 5 in order to release the clamping arrangement 12 during the feeding or removal of the metal sheet B and to clamp it during the bending process.
- a supply device 20 for the metal plate B is also connected to the control device 5 and controlled by it.
- the clamping device 10 results in an unambiguous definition of the metal plate B, so that the bending over the rows of provided with the press shoes 1.1 mold punch 1 can be performed with stable alignment and high accuracy.
- the support 11 with its front side provides a clear reference position for the setting of the die 1 and the above predetermined curvature of the metal plate B, wherein the respective thickness of the metal plate B in the control device 5 is taken into account.
- the desired shape of the sheet such as a cylindrical tube shape
- the desired shape of the sheet can be easily and accurately achieved by means of the control or regulation setting of the hydraulic or pneumatic actuating cylinder by means of a segment bending processing and end position of the rows of mold dies 1, with different settings easy and exactly possible.
- the rows of mold punches 1 are with their end faces are set at the same height or the same distance from the respective surface of the metal sheet B, while the distance increases from row to row to the edge of the processed sheet metal section increasingly along a straight line or convexly outwardly curved curve.
- the individual rows of the forming dies 1 with their end faces or press shoes 1.1 come into contact with the sheet metal edge in succession with the relevant surface of the sheet, with the lever arm between the relevant row of the forming dies 1 and the row the forming punch 3 increasingly shortened and thus increase the applied bending forces.
- the forming dies 3 are designed for higher forces than the mold punches 1, since they are also stressed more dynamically.
- a press shoe 4 can be assigned a plurality of forming dies 3 with hydraulic or pneumatic drives, so that the number of further press shoes 4 in this case is less than the number of forming dies 3.
- the total number of forming dies 3 in a row can be less than the number of mold dies 1 in a row, whereby the dynamic control of the forming dies 3 favors and wear parts are reduced.
- the row of forming dies 3 is at most as far away from the sheet edge as the row of forming dies 1 lying closest thereto.
- control device 5 By means of the control device 5, the control or regulation when bending on the properties of different materials of the tool of the metal plate B can be suitably adjusted.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
Description
Die Erfindung bezieht sich auf eine Blechbiegemaschine, insbesondere für die Herstellung von Rohren, mit einer Biegeeinrichtung, die ein System von Formwerkzeugstempeln mit in mehreren von einem zugeführten Blech in unterschiedlichen Abständen anordenbaren Reihen von Pressschuhen aufweist, wobei die Abstände der Pressschuhe von der betreffenden Blechoberfläche entsprechend der zu biegenden Kontur des Bleches gewählt und über mehrere Stellglieder vorgegeben oder vorgebbar sind und wobei mehrere hydraulisch oder pneumatisch angetriebene Formstempel auf der den Formwerkzeugstempeln gegenüberliegenden Seite des Bleches angeordnet sind, um das Blech in die von den Formwerkzeugstempeln eingestellte Kontur zu biegen.The invention relates to a sheet metal bending machine, in particular for the production of pipes, with a bending device comprising a system of dies with in several arranged by a sheet supplied at different distances rows of press shoes, wherein the distances of the press shoes from the respective sheet surface accordingly the contour of the sheet to be bent selected and predetermined or predetermined by a plurality of actuators and wherein a plurality of hydraulically or pneumatically driven forming dies are arranged on the side opposite the mold dies of the sheet to bend the sheet in the set of the mold punches contour.
Eine Blechbiegemaschine dieser Art ist in der
In der
Eine weitere Blechbiegemaschine für Rohre ist in der
Eine ähnliche hydraulische Blechbiegepresse wie die
Bei einer in der
In der
Für das Biegen von Blechen, beispielsweise bei der Fertigung von Hohlkörpern und insbesondere Rohren, wird das Blech, das bei Rohren großen Durchmessers eine erhebliche Stärke von mehreren Zentimetern oder gar im Bereich eines Dezimeters aufweisen kann, üblicherweise zwischen zwei Formstücken gepresst. Je nach anzubringender Kontur müssen die dazu notwendigen Formwerkzeuge für verschiedene Abmessungen gewechselt werden. Derartige Umrüstmaßnahmen schränken die Verfügbarkeit der Anlagen ein.For the bending of sheets, for example in the manufacture of hollow bodies and in particular pipes, the sheet, which may have a considerable thickness of several centimeters or even in the range of a decimeter in pipes of large diameter, usually pressed between two fittings. Depending on the contour to be attached, the necessary molds for different dimensions must be exchanged. Such retooling measures restrict the availability of the facilities.
Der Erfindung liegt die Aufgabe zugrunde, eine Blechbiegemaschine insbesondere für die Herstellung von Rohren bereit zu stellen, mit der sich bei zuverlässigem Betrieb eine verbesserte Ausnutzung ergibt.The invention has for its object to provide a sheet metal bending machine, in particular for the production of pipes, which results in improved operation with reliable operation.
Diese Aufgabe wird mit den Merkmalen des Anspruches 1 gelöst. Hierbei ist vorgesehen, dass die Stellglieder als Stellzylinder ausgebildet sind und dass die Formstempel in lediglich einer Reihe im Bereich eines an die Blechkante angrenzenden Endabschnitts des Blechs angeordnet sind.This object is achieved with the features of
Mit diesem Aufbau kann über die Stellzylinder und die damit verbundenen Pressschuhe die gewünschte Kontur genau eingestellt werden. Andererseits kann mittels der auf der gegenüberliegenden Seite angeordneten Formstempel, die in dem an die Blechkante angrenzenden Endabschnitt des Bleches angreifen, der Biegevorgang bei stabilem Aufbau und einfacher, genauer Steuerung zuverlässig durchgeführt werden. Die mehreren Reihen der Formwerkzeugstempel sind dabei vorzugsweise über der Oberseite des Bleches angeordnet, während die eine Reihe der Formstempel vorteilhaft an der Unterseite angeordnet ist. Jedoch ist auch eine umgekehrte Anordnung der Formwerkzeugstempel an der Unterseite und der den Biegevorgang ausführenden Formstempel an der Oberseite denkbar. Jedenfalls wird mit nur einer Reihe von Formstempeln bei nur einem Biegevorgang ein großer Biegebereich um alle Reihen der Formwerkzeugstempel erreicht. Es lassen sich auf diese Weise insbesondere auch Rohre großen Durchmessers (z. B. größer als 300 mm oder 500 mm) aus dickwandigen Blechen (von z. B. größer als 30 mm oder 50 mm) zuverlässig und rationell herstellen.With this structure, the desired contour can be precisely adjusted by means of the adjusting cylinders and the press shoes connected thereto. On the other hand, by means of the arranged on the opposite side of the forming die, which in the on the Sheet edge abutting end portion of the sheet attack, the bending operation with a stable structure and simple, accurate control are performed reliably. The plurality of rows of mold punches are preferably arranged above the upper side of the sheet, while one row of the mold punches is advantageously arranged on the underside. However, a reverse arrangement of the die punches on the bottom and the bending process exporting punch on the top is conceivable. In any case, a large bending area is achieved around all rows of mold punches with only a series of dies in just one bending operation. In this way, in particular, pipes of large diameter (for example greater than 300 mm or 500 mm) can also be produced reliably and efficiently from thick-walled metal sheets (of, for example, greater than 30 mm or 50 mm).
Eine vorteilhafte Ausgestaltung besteht dabei darin, dass die Reihe der Formstempel höchstens soweit von der betreffenden Blechkante entfernt ist wie die dieser am nächsten liegende Reihe der gegenüberliegenden Formwerkzeugstempel.An advantageous embodiment consists in the fact that the row of the forming dies is at most as far away from the sheet metal edge in question as the row of opposite die dies lying closest thereto.
Die Biegebearbeitung wird dabei dadurch begünstigt, dass eine Einspannvorrichtung für die Blechplatte vorhanden ist, die parallel zu der von der Blechkante abgelegenen Reihe der Formwerkzeugstempel auf deren von der Blechkante abgekehrter Seite angeordnet ist. Diese Maßnahmen können die Genauigkeit der Biegebearbeitung unterstützen.The bending processing is facilitated by the fact that a clamping device for the metal plate is present, which is arranged parallel to the remote from the sheet edge row of mold punches on their side facing away from the sheet edge side. These measures can support the accuracy of the bending process.
Dabei besteht für den Aufbau eine vorteilhafte Ausbildung darin, dass die Einspannvorrichtung zur Auflage der Blechplatte eine untere feste oder in der Höhe fest einstellbare Abstützung und eine dieser auf der Oberseite gegenüberliegende Spannanordnung zum Festklemmen der Blechplatte gegen die Abstützung aufweist.It has an advantageous design for the construction is that the clamping device for supporting the metal plate has a lower fixed or height-adjustable support and one of these on the top opposite clamping arrangement for clamping the metal plate against the support.
Zu einer vorteilhaften Funktion tragen die Maßnahmen bei, dass die Spannanordnung zum Öffnen und Schließen an eine hydraulisch arbeitende Betätigungsvorrichtung angeschlossen ist.For an advantageous function, the measures contribute that the clamping arrangement is connected to open and close to a hydraulically operating actuator.
Ein stabiler Aufbau und eine zuverlässige Funktion werden ferner dadurch unterstützt, dass die Hydraulikantriebe der Formstempel, insbesondere ausgebildet als weitere Stellzylinder, zur Erzeugung höherer Kräfte dimensioniert sind als die Stellzylinder der Formwerkzeugstempel.A stable construction and a reliable function are further supported by the fact that the hydraulic drives of the forming dies, in particular designed as further adjusting cylinders, are dimensioned to generate higher forces than the setting cylinders of the forming dies.
Für die Formung ist die Maßnahme von Vorteil, dass auch die Formstempel mit Pressschuhen versehen sind. Mit austauschbaren Pressschuhen an den Formwerkzeugstempeln und/oder den Formstempeln lässt sich ein Verschleiß leicht beheben oder auf einfache Weise eine Anpassung an unterschiedliche Krümmungen erreichen.For the shaping of the measure is advantageous that the mold punches are provided with press shoes. With exchangeable press shoes on the mold punches and / or the dies, wear can be easily eliminated or easily adapted to different curvatures.
Verschiedene Krümmungen lassen sich auf einfache Weise dadurch vorgeben, beispielsweise über einen in der Steuerungseinrichtung enthaltenen Rechner programmieren, dass für die Einstellung der Stellzylinder eine Steuerungseinrichtung vorhanden ist, mit der die Reihen der Pressschuhe in Richtung der Reihen mit gleichem Abstand von der Blechoberfläche und von Reihe zu Reihe zur Blechkante hin mit zunehmendem Abstand entlang einer Geraden oder in konvexer, insbesondere kreisabschnittförmiger, Krümmung positionierbar sind. Über die Steuerungseinrichtung kann auch der Biegevorgang über die Formstempel mit der zugehörigen hydraulischen oder pneumatischen Antriebsvorrichtung, beispielsweise ebenfalls mit Stellzylindern abgestimmt auf den Krümmungsverlauf und/oder das Material (Stärke, Zusammensetzung) geeignet gesteuert werden.Various curvatures can be predefined in a simple manner, for example by programming via a computer contained in the control device, that there is a control device for adjusting the adjusting cylinders, with which the rows of press shoes in the direction of the rows equidistant from the sheet surface and from row to row to the sheet edge with increasing distance along a straight line or in a convex, in particular circular segment-shaped, curvature can be positioned. By means of the control device, the bending process can also be suitably controlled via the forming punches with the associated hydraulic or pneumatic drive device, for example also with adjusting cylinders matched to the course of curvature and / or the material (thickness, composition).
Die Biegebearbeitungsvorgänge werden dadurch erleichtert, dass auch die Spannanordnung mit ihrer Betätigungsvorrichtung und/oder eine gegebenenfalls zusätzlich vorhandene Zuführvorrichtung für die Blechplatte an die Steuerungsvorrichtung angeschlossen und mittels dieser abgestimmt aufeinander und/oder den Biegeprozess steuerbar ist/sind.The bending processing operations are facilitated by the fact that the clamping arrangement with its actuator and / or optionally in addition existing supply device for the metal plate connected to the control device and tuned by means of these mutually and / or the bending process is / are.
Für den Aufbau der Blechbiegemaschine sind des Weiteren die Maßnahmen von Vorteil, dass die Anzahl der Formstempel pro Reihe geringer ist als die Anzahl der Formwerkzeugstempel pro Reihe. Auf diese Weise lässt sich der Aufbau vereinfachen und auch an unterschiedliche Anforderungen anpassen.Furthermore, the measures are advantageous for the construction of the plate bending machine in that the number of forming dies per row is less than the number of die punches per row. In this way, the structure can be simplified and adapted to different requirements.
Die Erfindung wird nachfolgend anhand von Ausführungsbeispielen unter Bezugnahme auf die Zeichnung näher erläutert.The invention will be explained in more detail by means of embodiments with reference to the drawing.
Die Fig. zeigt eine in einer Blechbiegemaschine angeordnete Blechplatte B, über deren Oberseite mehrere Reihen von Formwerkzeugstempeln 1 und unter deren Unterseite eine Reihe von Formstempeln 3 angeordnet sind. Die Blechplatte B, die über eine Auflage 14 zugeführt wird, ist in einer Einspannvorrichtung 10 mit einer Abstützung 11 auf der Unterseite und einer Spannanordnung 12 auf der Oberseite stabil festgelegt, wobei die Spannanordnung 12 mittels einer vorzugsweise hydraulischen oder pneumatischen Betätigungsvorrichtung 13 gegen die Oberseite der Blechplatte B gegenüber der Abstützung 11 angedrückt wird.The Fig. Shows a arranged in a sheet metal bending plate B, over the top of several rows of
Die der Oberseite der Blechplatte B zugekehrten Endabschnitte der Formwerkzeugstempel 1 sind mit Pressschuhen 1.1 versehen, deren Enden konisch angeschrägt oder konvex nach außen gerundet sind, so dass sie den Biegevorgang entsprechend der eingestellten Krümmung begünstigen. Auch der zur Unterseite der Blechplatte B gerichtete Endabschnitt der betreffenden Formstempel 3 ist mit einem weiteren Pressschuh 4 versehen, dessen zu der unteren Oberfläche der Blechplatte B hin gerichtete Stirnfläche ebenfalls konisch abgeschrägt oder konvex nach außen gerundet ist, so dass zu Beginn der Biegebearbeitung die flache Blechplatte B lediglich punktartig oder linienartig auf dem Pressschuh 4 aufliegt und beim Biegevorgang eine Neigungsänderung der unteren Blechoberfläche relativ zur Stirnseite des Pressschuhs 4 ungehindert fortschreiten kann, wodurch der Biegevorgang zusätzlich begünstigt wird. Die Formwerkzeugstempel 1 und die Formstempel 3 werden vorzugsweise mittels hydraulisch angetriebener Stellglieder, insbesondere Stellzylinder 2 bzw. 6, zur Einstellung auf die vorgegebene Krümmung einerseits und für den Biegevorgang andererseits betätigt, wobei die Steuerung oder Regelung der Betätigung mittels einer Steuerungseinrichtung 5 erfolgt. Anstelle eines hydraulischen Antriebs kann insbesondere für die Formstempel 3 ein pneumatischer Antrieb vorgesehen sein. Sind die Pressschuhe 1.1 und/oder weiteren Pressschuhe 4 bei einer Ausführungsvariante auswechselbar an den Endabschnitten der Formwerkzeugstempel 1 bzw. der Formstempel 3 angebracht, so können Pressschuhe 1.1, 4 mit unterschiedlich geformter Stirnseite leicht gegeneinander ausgetauscht werden, oder sie können bei Verschleiß einfach ersetzt werden. Auch wird durch den Austausch von Pressschuhen 1.1 bzw. 4 eine Anpassung an unterschiedliche Materialien zu biegender Blechplatten B ermöglicht. Bei der Abstimmung der Materialpaarung Pressschuhe/Blechplatte ist es vorteilhaft, den Reibwert so zu wählen, dass eine Rutschhemmung erreicht wird oder aber eine gute Gleitfähigkeit je nach Biegekontur oder Blechmaterial, Blechstärke oder dgl.The top of the metal plate B facing end portions of the
Bei einer alternativen Ausgestaltung ist vorgesehen, dass die Reihe der Formstempel 3 für den Biegevorgang mit der zugehörigen Antriebseinrichtung über der Oberseite der Blechplatte B angeordnet ist, während die Reihen der Formwerkzeugstempel 1 für die Einstellung der Krümmung unter der Unterseite der Blechplatte B angeordnet sind.In an alternative embodiment, it is provided that the row of forming
Mittels der Steuerungseinrichtung 5 können die Einstellung der Formwerkzeugstempel 1 auf die vorgegebene Krümmung und die Ansteuerung der Formstempel 3 für den Biegevorgang in Abstimmung aufeinander erfolgen, wozu die Steuerung eine für eine Programmierung geeignete Rechnereinheit aufweist. Vorteilhaft weist die Blechbiegemaschine ein Messsystem mit einer Messsensorik auf, welches die Kontur des Bleches beim Einbiegen aufnimmt und dessen Daten der Steuerungseinrichtung zugeführt und in dieser verarbeitet werden, um die Biegedaten anzupassen. Ferner umfasst die Steuerungseinrichtung 5 vorteilhaft eine Speichereinrichtung, in der Vorgabewerte für die Bearbeitung bestimmter Produkttypen hinterlegt und für den Bediener leicht abrufbar sind. Mit der Steuerungseinrichtung 5 kann auch die Einspannvorrichtung 10 gekoppelt sein, um die Spannanordnung 12 beim Zuführen oder Abnehmen der Blechplatte B freizugeben und beim Biegevorgang einzuspannen. Für einen automatisierten Ablauf ist weiterhin vorteilhaft vorgesehen, dass auch eine Zuführvorrichtung 20 für die Blechplatte B an die Steuerungseinrichtung 5 angeschlossen und von dieser gesteuert wird. Damit kann die Zuführung der Blechplatte B zu der Bearbeitungsstelle für das Biegen mittels der Steuerungseinrichtung 5, abgestimmt auf den Biegevorgang und die Einspannung, erfolgen. Die Einspannvorrichtung 10 ergibt eine eindeutige Festlegung der Blechplatte B, so dass die Biegung über die Reihen der mit den Pressschuhen 1.1 versehenen Formwerkzeugstempel 1 bei stabiler Ausrichtung und mit hoher Genauigkeit durchgeführt werden kann. Dabei bietet die Abstützung 11 mit ihrer Stirnseite eine eindeutige Bezugslage für die Einstellung der Formwerkzeugstempel 1 und die darüber vorgegebene Krümmung der Blechplatte B, wobei die jeweilige Stärke der Blechplatte B in der Steuerungseinrichtung 5 mit berücksichtigt wird.By means of the
Mit der Biegemaschine kann die gewünschte Form des Bleches, beispielsweise eine zylindrische Rohrform, einfach und genau über die mittels der Steuerung bzw. Regelung vorgegebene Einstellung der hydraulischen oder pneumatischen Stellzylinder mittels einer Segmentbiegebearbeitung und Endstellung der Reihen der Formwerkzeugstempel 1 erreicht werden, wobei unterschiedliche Einstellungen einfach und genau ermöglicht werden. Die Reihen der Formwerkzeugstempel 1 sind dabei mit ihren Stirnseiten auf gleiche Höhenlage bzw. gleichen Abstand von der betreffenden Oberfläche der Blechplatte B eingestellt, während sich der Abstand von Reihe zu Reihe zur Kante des bearbeiteten Blechabschnitts hin zunehmend entlang einer Geraden oder konvex nach außen gekrümmten Kurve zunimmt. Beim Biegen des Bleches mittels der Formstempel 3 treten somit die einzelnen Reihen der Formwerkzeugstempel 1 mit ihren Stirnseiten bzw. Pressschuhen 1.1 zur Blechkante hin nacheinander mit der betreffenden Oberfläche des Blechs in Kontakt, wobei sich der Hebelarm zwischen der betreffenden Reihe der Formwerkzeugstempel 1 und der Reihe der Formstempel 3 zunehmend verkürzt und damit die aufzubringenden Biegekräfte erhöhen. Vorzugsweise sind die Formstempel 3 für höhere Kräftebeanspruchungen ausgelegt als die Formwerkzeugstempel 1, da sie auch dynamisch stärker beansprucht werden. Einem Pressschuh 4 können mehrere Formstempel 3 mit hydraulischen bzw. pneumatischen Antrieben zugeordnet sein, so dass die Anzahl der weiteren Pressschuhe 4 in diesem Falle geringer ist als die Anzahl der Formstempel 3. Auch kann insgesamt die Anzahl der Formstempel 3 in einer Reihe geringer sein als die Anzahl der Formwerkzeugstempel 1 in einer Reihe, wodurch die dynamische Steuerung der Formstempel 3 begünstigt und auch Verschleißteile verringert werden. Um bis zu der der betreffenden Blechkante am nächsten liegenden Reihe der Formwerkzeugstempel 1 eine zuverlässige Biegung durchzuführen, ist die Reihe der Formstempel 3 höchstens so weit von der Blechkante entfernt, wie die dieser am nächsten liegende Reihe der Formwerkzeugstempel 1.With the bending machine, the desired shape of the sheet, such as a cylindrical tube shape, can be easily and accurately achieved by means of the control or regulation setting of the hydraulic or pneumatic actuating cylinder by means of a segment bending processing and end position of the rows of mold dies 1, with different settings easy and exactly possible. The rows of
Mittels der Steuerungseinrichtung 5 kann die Steuerung bzw. Regelung beim Biegen auf die Eigenschaften unterschiedlicher Materialien des Werkzeugs der Blechplatte B geeignet abgestimmt werden.By means of the
Claims (10)
- Metal-sheet bending machine, in particular for the production of tubes, with a bending device which has a system of die rams (1) having a plurality of rows of press shoes (1.1) capable of being arranged by a delivered metal sheet at different distances from a surface of the latter, the distances of the press shoes (1.1) from the respective metal-sheet surface being selected according to the contour, to be bent, of the metal sheet (B) and being predetermined or predeterminable via a plurality of actuating members (2), and a plurality of hydraulically or pneumatically driven forming rams (3) being arranged on the side of the metal sheet which lies opposite the die rams (1), in order to bend the metal sheet into the contour set by the die rams (1), characterized in that the actuating members are designed as actuating cylinders (2), and in that, during operation, the forming rams (3) are arranged in only one row in the region of a metal-sheet end portion adjacent to the metal-sheet edge.
- Metal-sheet bending machine according to Claim 1, characterized in that the row of forming rams (3) is at most as far away from the respective metal-sheet edge as the latter is from the nearest row of the opposite die rams (1).
- Metal-sheet bending machine according to Claim 1 or 2, characterized in that a chucking device (10) for the sheet plate (B) is present, which is arranged, parallel to the row of die rams (1) which is remote from the metal-sheet edge, on that side of said row of die rams which faces away from the metal-sheet edge.
- Metal-sheet bending machine according to Claim 3, characterized in that the chucking device (10) has, for supporting the sheet plate (B), a lower fixed or permanently vertically adjustable support (11) and a tension arrangement (12), lying opposite the latter on the top side, for clamping the sheet plate (B) against the support (11).
- Metal-sheet bending machine according to Claim 3 or 4, characterized in that the tension arrangement (12) is connected for opening and closing to a hydraulically operating actuation device (13).
- Metal-sheet bending machine according to one of the preceding claims, characterized in that the hydraulic drives of the forming rams (3) are dimensioned, particularly designed, as further actuating cylinders for generating higher forces than the actuating cylinders (2) of the die rams (1).
- Metal-sheet bending machine according to one of the preceding claims, characterized in that the forming rams (3) are also provided with press shoes (4).
- Metal-sheet bending machine according to one of the preceding claims, characterized in that, for setting the actuating cylinders (2), a control device (5) is present, by means of which the rows of press shoes (1) can be positioned in the direction of the rows at identical distance from the metal-sheet surface and from row to row at an increasing distance towards the metal-sheet edge along a straight line or in a convex curvature, in particular a curvature in the form of a segment of a circle.
- Metal-sheet bending machine according to Claim 8, characterized in that the tension arrangement (12) with its actuation device (13) and/or a delivery device (20), additionally present if appropriate, for the sheet plate (B) are/is connected to the control device (20) and can be controlled by means of the latter so as to be coordinated with one another and/or with the bending process.
- Metal-sheet bending machine according to one of the preceding claims, characterized in that the number of forming rams (3) per row is smaller than the number of die rams (1) per row.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL08022322T PL2077165T3 (en) | 2008-01-03 | 2008-12-23 | Sheet metal bending machine |
| SI200830034T SI2077165T1 (en) | 2008-01-03 | 2008-12-23 | Sheet metal bending machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE202008000121U DE202008000121U1 (en) | 2008-01-03 | 2008-01-03 | Bending machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2077165A1 EP2077165A1 (en) | 2009-07-08 |
| EP2077165B1 true EP2077165B1 (en) | 2010-02-17 |
Family
ID=39311650
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP08022322A Not-in-force EP2077165B1 (en) | 2008-01-03 | 2008-12-23 | Sheet metal bending machine |
| EP08022540.2A Not-in-force EP2077166B1 (en) | 2008-01-03 | 2008-12-31 | Longitudinal edge machining device for sheet metal |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP08022540.2A Not-in-force EP2077166B1 (en) | 2008-01-03 | 2008-12-31 | Longitudinal edge machining device for sheet metal |
Country Status (9)
| Country | Link |
|---|---|
| EP (2) | EP2077165B1 (en) |
| AT (1) | ATE457838T1 (en) |
| DE (2) | DE202008000121U1 (en) |
| DK (1) | DK2077165T3 (en) |
| ES (2) | ES2341503T3 (en) |
| PL (2) | PL2077165T3 (en) |
| PT (1) | PT2077165E (en) |
| RS (1) | RS51337B (en) |
| SI (1) | SI2077165T1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011053676A1 (en) | 2011-09-16 | 2013-03-21 | EISENBAU KRäMER GMBH | Pipe bending machine for shaping sheet metal plates into pipes, has mold segments which are adjustable with shape-defining surface in setting positions in normal plane lying in curve to the pipe axis in accordance with curved contour |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7506531B1 (en) * | 2007-12-20 | 2009-03-24 | Gm Global Technology Operations, Inc. | Dimple-forming tool for projection welding |
| EP2419227B1 (en) * | 2009-04-16 | 2013-02-13 | Bergrohr GmbH Siegen | Bending press for sheet panels |
| DE102016225986A1 (en) * | 2016-12-22 | 2018-06-28 | Bayerische Motoren Werke Aktiengesellschaft | Apparatus and method for forming a sheet |
| CN112404164A (en) * | 2020-11-10 | 2021-02-26 | 上海宝冶集团有限公司 | Technological method for pressing and forming square tube |
| CN116099952B (en) * | 2023-01-10 | 2024-03-29 | 连云港市东堡旋耕机械有限公司 | Multi-station simultaneous metal processing stamping equipment of agricultural rotary cultivator |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2365515B2 (en) | 1973-02-14 | 1977-08-25 | BENDING DEVICE FOR PLATES | |
| DE2402190C3 (en) | 1974-01-17 | 1978-03-02 | Mitsubishi Jukogyo K.K., Tokio | Device for bending steel sheets or plates |
| DE2455521C3 (en) | 1974-11-23 | 1978-05-11 | G. Siempelkamp Gmbh & Co, 4150 Krefeld | Hydraulic sheet metal bending press |
| JPS6044050B2 (en) | 1976-09-10 | 1985-10-01 | 新日本製鐵株式会社 | Multi-stage forming method for long shells |
| US4043165A (en) | 1976-09-15 | 1977-08-23 | The Boeing Company | Three-point, air-bending sheet metal bender |
| US4430872A (en) | 1980-02-14 | 1984-02-14 | Nippon Kokan Kabushiki Kaisha | Method and apparatus for plate edge preparation for UOE pipe making process |
| US4353235A (en) | 1980-06-17 | 1982-10-12 | Kaiser Steel Corporation | Edge preforming of metal plate |
| US4445357A (en) | 1980-11-03 | 1984-05-01 | Kaiser Steel Corporation | Pipe press |
| SE443733B (en) | 1982-11-12 | 1986-03-10 | Asea Ab | SET AND TOOLS FOR BENDING THE THICKNESS PLATE |
| DE4215807C2 (en) | 1992-05-15 | 1998-03-19 | Mannesmann Ag | Pipe bending press |
| DE4410105A1 (en) * | 1994-03-21 | 1995-09-28 | Mannesmann Ag | Pipe forming press |
| DE19621658C2 (en) | 1996-05-30 | 1999-11-04 | Eht Werkzeugmaschinen Gmbh | Processing machine for plate-shaped workpieces, in particular for producing curved edges on sheet metal parts |
| DE10232098B4 (en) * | 2002-07-15 | 2004-05-06 | Sms Meer Gmbh | Device for producing pipes from sheet metal |
-
2008
- 2008-01-03 DE DE202008000121U patent/DE202008000121U1/en not_active Expired - Lifetime
- 2008-12-23 PT PT08022322T patent/PT2077165E/en unknown
- 2008-12-23 AT AT08022322T patent/ATE457838T1/en active
- 2008-12-23 EP EP08022322A patent/EP2077165B1/en not_active Not-in-force
- 2008-12-23 PL PL08022322T patent/PL2077165T3/en unknown
- 2008-12-23 SI SI200830034T patent/SI2077165T1/en unknown
- 2008-12-23 RS RSP-2010/0208A patent/RS51337B/en unknown
- 2008-12-23 ES ES08022322T patent/ES2341503T3/en active Active
- 2008-12-23 DE DE502008000379T patent/DE502008000379D1/en active Active
- 2008-12-23 DK DK08022322.5T patent/DK2077165T3/en active
- 2008-12-31 EP EP08022540.2A patent/EP2077166B1/en not_active Not-in-force
- 2008-12-31 ES ES08022540.2T patent/ES2447495T3/en active Active
- 2008-12-31 PL PL08022540T patent/PL2077166T3/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011053676A1 (en) | 2011-09-16 | 2013-03-21 | EISENBAU KRäMER GMBH | Pipe bending machine for shaping sheet metal plates into pipes, has mold segments which are adjustable with shape-defining surface in setting positions in normal plane lying in curve to the pipe axis in accordance with curved contour |
| DE102011053676B4 (en) * | 2011-09-16 | 2016-09-08 | EISENBAU KRäMER GMBH | Tube bending machine |
Also Published As
| Publication number | Publication date |
|---|---|
| ES2341503T3 (en) | 2010-06-21 |
| DE202008000121U1 (en) | 2008-04-17 |
| SI2077165T1 (en) | 2010-07-30 |
| DK2077165T3 (en) | 2010-06-07 |
| PL2077166T3 (en) | 2014-05-30 |
| DE502008000379D1 (en) | 2010-04-01 |
| EP2077166B1 (en) | 2013-11-20 |
| EP2077166A1 (en) | 2009-07-08 |
| PT2077165E (en) | 2010-05-17 |
| PL2077165T3 (en) | 2010-07-30 |
| RS51337B (en) | 2011-02-28 |
| ATE457838T1 (en) | 2010-03-15 |
| EP2077165A1 (en) | 2009-07-08 |
| ES2447495T3 (en) | 2014-03-12 |
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