EP0035009A1 - Device for supporting the working roll of a sheet bending or levelling machine - Google Patents

Device for supporting the working roll of a sheet bending or levelling machine Download PDF

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Publication number
EP0035009A1
EP0035009A1 EP81890015A EP81890015A EP0035009A1 EP 0035009 A1 EP0035009 A1 EP 0035009A1 EP 81890015 A EP81890015 A EP 81890015A EP 81890015 A EP81890015 A EP 81890015A EP 0035009 A1 EP0035009 A1 EP 0035009A1
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EP
European Patent Office
Prior art keywords
support
support rollers
ruler
work roll
engagement
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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.)
Granted
Application number
EP81890015A
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German (de)
French (fr)
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EP0035009B1 (en
Inventor
Thomas Dipl.Ing. Neff
Friedrich Dipl.Ing. Thiele
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Voestalpine AG
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Voestalpine AG
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Publication date
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Publication of EP0035009A1 publication Critical patent/EP0035009A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/14—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories having counter-pressure devices acting on rolls to inhibit deflection of same under load; Back-up rolls
    • 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
    • B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
    • B21D1/02—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling by rollers
    • 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
    • B21D5/14—Bending sheet metal along straight lines, e.g. to form simple curves by passing between rollers

Definitions

  • the invention relates to a device for supporting a work roll of a sheet metal bending or straightening machine with support rollers distributed over the length of the work roll, which are supported on actuators on a support.
  • a disadvantage of such an adjustment of the support roller position is that it is derived from the judging result, which on the one hand includes an assessment of the judging result and the measurement problems associated with it and on the other hand changes in conditions can only be taken into account after the fact.
  • the invention is therefore based on the object to avoid these deficiencies and to improve a device for supporting a work roll of a sheet metal bending or straightening machine of the type described in such a way that the desired course of the work roll can be ensured even under changing load conditions.
  • each actuating drive is assigned a reference point which determines the desired position of the support rollers when the support beam is unloaded and is fixed in space with respect to the position of the work roll, and a measuring device for the deviation of the actual position from the desired position given by the reference point and that the actuators can be controlled via a control device as a function of the measured actual value difference.
  • the adjustment of the support rollers is not adjusted to the travel of the actuators, but to a fixed reference point, the load-related deflections of the work roll can be compensated for regardless of the deflection of the support bracket for the support rollers.
  • the deviations from the target position of the work roll can be determined with the aid of the measuring devices provided, which determine the actual position of the support rollers, with respect to a fixed reference system, which allows simple adjustment of the actuators in order to maintain the target position.
  • This room Fixed reference system is given by the reference points against which the position of the support rollers is measured. If the work roll cannot be adjusted, these reference points for setting the actuators are actually fixed in space. If there is an option for the work roll, the reference points must of course be stationary with regard to the position of the work roll, because it is important to maintain the desired position of the support rollers. With an adjustment of the work roll, the reference points must also be adjusted by the same amount.
  • the position of the work roll is regulated by the employment of the support rollers with respect to a fixed reference system, any deformation of the work roll is immediately detected and compensated for by a corresponding adjustment of the support rollers, so that the sheet to be straightened or the one to be bent Sheet metal sections are processed under constant working conditions. It is not necessary to check the judging result or the roll-in result to correct the machine setting.
  • the reference points are formed by a ruler running parallel to the work roll, this results in particularly simple construction conditions because the reference points are defined together. It is only necessary to ensure that the forces that occur cannot act on the ruler in order to be able to actually ensure fixed reference points. For this reason, the ruler should be supported without torque. With such a moment-free support, the ruler can also be mounted on the support bracket for the support rollers, because the support forum cannot affect the ruler.
  • the storage of the ruler on the support has the advantage that the spatial assignment of the ruler to the work roll is retained even when the work roll is adjusted, since the support for the support rollers is also adjusted. In the case of non-adjustable work rolls, however, it is cheaper if the ruler is on its own storage outside the carrier trestle is stored. With the provision of separate pedestals, any change in the position of the ruler due to load can be excluded.
  • the design of the measuring device provided for this being immaterial, particularly simple ratios can be achieved in that the measuring device each consists of a sensor assigned to the support rollers and a sensor provided on the ruler.
  • Inductive or capacitive sensors which allow contactless measurement, can serve as sensors.
  • the arrangement of the sensors on the ruler has the advantage that the sensors do not have to be moved with the support rollers.
  • the lower work rolls 1 of a sheet straightening machine are supported against undesired bending by support rollers 2 distributed over the length of the work rolls 1.
  • the also required Ab Support of the upper work rolls 3 is carried out in the usual way via further support rollers, but this is not shown for reasons of clarity.
  • the support rollers 2 for the lower work rolls 1 can be adjusted with the aid of actuators 4 which are mounted on a carrier 5.
  • the carrier 5 is held in the side uprights 6 of the machine frame.
  • the forces acting on the work rolls 1 are therefore partly carried away via the support rollers 2 and the actuators 4 on the carrier 5, so that this carrier 5 is subjected to a bending stress. If the support 5 bends, the support rollers 2 are taken along in accordance with the local deflection, so that the course of the work rolls 1 originally set via the support rollers 2 can no longer be guaranteed.
  • a ruler 7 is provided parallel to the work rolls, the fixed reference point and thus independent of the deflection of the support 5 for measuring the respective position of the individual support rolls 2 forms.
  • the measuring device 8 for determining the actual position of the support rollers 2 consists in each case of an inductive or capacitive transducer 9 which interacts with a corresponding sensor 10.
  • the sensors 9 are arranged on the ruler 7, while the sensors 10 belong to the support rollers 2.
  • the actuators 4 as a hydraulic cylinder shown in FIG. 1, there is a particular design simplification if the sensors 10 are connected directly to the piston 11.
  • each actuator 4 can be adjusted accordingly via the measured difference between the actual value and the target value.
  • control devices 14 are provided which are connected to the transducers 9 and which actuate the actuators 4 as a function of the setpoint / actual value difference which has been determined. In Fi g . 4, this control is indicated by a corresponding control valve 15, which controls the pressure applied to the respective hydraulic cylinder.
  • the control of the actuators can of course vary depending on the type of construction.
  • the support rollers 2 for the work rolls 1 of a straightening machine are mounted in rows in a common frame 16, so that. each row of support rollers can be adjusted for itself via the frame 16, which results in the same position of the support rollers 2 on all work rolls 1 and thus a design simplification, although of course each work roll is supported differently over its length over the support rolls distributed over the length of the work roll can be.
  • the actuating drives 4 acting on the frame 16 are designed in the exemplary embodiment according to FIG. 2 as wedge drives which are acted upon by hydraulic cylinders 17 acting in opposite directions. Instead of one hydraulic cylinder 17 each, only one common hydraulic cylinder can be provided for the wedge drives assigned to a frame 16, but this only permits parallel adjustment of the frame 16.
  • the actuation of the actuators 4 via the hydraulic cylinders 17 takes place in turn via corresponding control devices 14 which are connected to corresponding sensors 9 for determining the actual position of the support rollers 2, as indicated in FIG. 4.
  • the work rolls are supported differently by correspondingly arranged support rollers 2 as a function of the load occurring, as is shown in FIG. 3 using a three-roll bending machine.
  • the support rollers 2, which are mounted in groups in a common frame 16 similarly to the straightening machine according to FIG. 2, are adjusted in the same way via the actuating drives 4 if there would be a deflection of the work rolls 1 due to changing load conditions.
  • the changes in the work roll deflection determined via the measuring devices 8 lead to a correction of the support roll adjustment via a set actual value comparison, so that the shape of the work rolls is independent of the occurring load conditions can be kept constant.
  • the higher load forces occurring when the sheets 18 are bent do not therefore result in a greater deflection of the work rolls.
  • the straight course of the generatrix of the rolled sheets 18 is therefore retained over the entire bending range.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Straightening Metal Sheet-Like Bodies (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Abstract

1. A device for supporting the working roll (1) of a sheet metal bending or levelling machine, comprising backing rollers (2), which are distributed over the length of the working roll (1) and supported by a carrier (5) by means of positioning drives (4), each of which has associated with it a point of reference indicating the desired position of engagement of the backing rollers (2), characterized in that each positioning drive (4) has associated with it a measuring device (8) for measuring the deviation of the actual position of engagement of the associated backing roller (4) from the desired position of engagement when the carrier (5) is unloaded, which desired position of engagement is determined by the point of reference, which has a fixed three-dimensional relation to the position of engagement of the working roll (1), and the positioning drives (4) are adapted to be controlled by a controller (14) in dependence on the existing difference between the desired and actual values.

Description

Die Erfindung bezieht sich auf eine Vorrichtung zum Abstützen einer Arbeitswalze einer Blechbiege- oder -richtmaschine mit über die Länge der Arbeitswalze verteilten Stützrollen, die über Stelltriebe auf einem.Träger abgestützt sind.The invention relates to a device for supporting a work roll of a sheet metal bending or straightening machine with support rollers distributed over the length of the work roll, which are supported on actuators on a support.

Um die zufolge der Arbeitsbelastung auftretende Durchbiegung der Arbeitswalzen beispielsweise einer Richtmaschine zu vermeiden, werden an die Arbeitswalzen Stützrollen angestellt, über die ein Teil der Arbeitswalzenbelastung abgetragen wird, und zwar auf einen Stützträger für die Stützrollen. Dieser Stützträger wird demnach ebenfalls auf Biegung beansprucht, so daß die Durchbiegung dieses Stützträgers über die Stützrollen wieder auf die Arbeitswalze zurückwirkt. Auf Grund der dadurch ermöglichten Arbeitswalzendurchbiegung wird selbtsverständlich der Richtvorgang für das zu richtende Blech beeinflußt. Da die Stützrollen über Stelltriebe auf dem Stützträger abgestützt sind, kann die Stützrollenanstellung nachgestellt werden, um am Blech festgestellte, mangelhafte Richtergebnisse berücksichtigen zu können. Nachteilig bei einer solchen Nachstellung der Stützrollenlage ist jedoch, daß sie vom Richtergebnis abgeleitet wird, was einerseits eine Beurteilung des Richtergebnisses und die damit verbundenen Meßprobleme einschließt und anderseits sich ändernde Verhältnisse nur im nachhinein berücksichtigen läßt.In order to avoid the deflection of the work rolls, for example a straightening machine, which occurs as a result of the work load, support rolls are placed on the work rolls, via which part of the work roll load is removed, specifically on a support support for the support rolls. This support beam is therefore also subjected to bending, so that the deflection of this support beam via the support rollers acts back on the work roll. The straightening process for the sheet to be straightened is of course influenced on account of the work roll deflection thereby made possible. Since the support rollers are supported on the support bracket via actuators, the support roller adjustment can be adjusted in order to take into account defective judging results found on the sheet. A disadvantage of such an adjustment of the support roller position, however, is that it is derived from the judging result, which on the one hand includes an assessment of the judging result and the measurement problems associated with it and on the other hand changes in conditions can only be taken into account after the fact.

Bei Walzenbiegemaschinen werden die Arbeitswalzen während des Anbiegevorganges stärker belastet, so daß sich wegen dieser stärkeren Belastung auch eine größere Durchbiegung einstellen wird. Die Erzeugenden der eingerollten Blechschüsse weichen demnach im Anbiegebereich von der Geraden ab, was auch über Stützrollen nicht verhindert werden kann, weil die Stützrollen für die Arbeitswalzen wieder auf einem Träger abgestützt werden müssen, der einer entsprechenden Biegebeanspruchung ausgesetzt wird. Das Vorsehen von entsprechend angestellten Stützrollen kann daher die Durchbiegung der Arbeitswalzen zufolge sich ändernder Belastungen zwar vermindern, nicht aber grundsätzlich verhindern.In roll bending machines, the work rolls are subjected to greater loads during the bending process, so that because of this greater load will also set a larger deflection. The generators of the rolled-up sheet metal sections therefore deviate from the straight line in the bending area, which cannot be prevented even by support rollers, because the support rollers for the work rolls have to be supported again on a support which is subjected to a corresponding bending stress. The provision of appropriately adjusted support rollers can therefore reduce the deflection of the work rolls due to changing loads, but it cannot fundamentally prevent them.

Der Erfindung liegt demnach die Aufgabe zugrunde, diese Mängel zu vermeiden und eine Vorrichtung zum Abstützen einer Arbeitswalze einer Blechbiege- oder -richtmaschine der eingangs geschilderten Art so zu verbessern, daß der gewünschte Verlauf der Arbeitswalze auch bei sich ändernden Belastungsverhältnissen gewährleistet werden kann.The invention is therefore based on the object to avoid these deficiencies and to improve a device for supporting a work roll of a sheet metal bending or straightening machine of the type described in such a way that the desired course of the work roll can be ensured even under changing load conditions.

Die Erfindung löst die gestellte Aufgabe dadurch, daß jedem Stelltrieb ein die Soll-Anstellung der Stützrollen bei unbelastetem Stützträger bestimmender, hinsichtlich der Anstellage der Arbeitswalze raumfester Bezugspunkt und eine Meßeinrichtung für die Abweichung der Ist-Anstellung von der durch den Bezugspunkt gegebenen Soll-Anstellung zugeordnet ist und daß die Stelltriebe über eine Regeleinrichtung in Abhängigkeit von der gemessenen Söll-Istwertdifferenz ansteuerbar sind.The invention achieves the stated object in that each actuating drive is assigned a reference point which determines the desired position of the support rollers when the support beam is unloaded and is fixed in space with respect to the position of the work roll, and a measuring device for the deviation of the actual position from the desired position given by the reference point and that the actuators can be controlled via a control device as a function of the measured actual value difference.

Da zufolge dieser Maßnahmen die Anstellung der Stützrollen nicht auf den Stellweg der Stelltriebe, sondern auf einen raumfesten Bezugspunkt abgestimmt ist, können die belastungsbedingten Durchbiegungen der Arbeitswalze unabhängig von der dabei auftretenden Durchbiegung des Stützträgers für die Stützrollen ausgeglichen werden. Die Abweichungen von der Soll-Lage der Arbeitswalze können mit Hilfe der vorgesehenen, die Ist-Anstellung der Stützrollen ermittelnden Meßeinrichtungen bezüglich eines raumfesten Bezugsystems festgestellt werden, was ein einfaches Nachregeln der Stellbriebe zur Beibehaltung der Soll-Lage erlaubt. Dieses raumfeste Bezugsystem ist durch die Bezugspunkte gegeben, denen gegenüber die Lage der Stützrollen gemessen wird. Bei nicht anstellbarer Arbeitswalze sind diese Bezugspunkte für die Einstellung der Stelltriebe tatsächlich raumfest. Ist eine Anstellmöglichkeit für die Arbeitswalze vorgesehen, so müssen die Bezugspunkte selbstverständlich hinsichtlich der Anstellage der Arbeitswalze ortsfest sein, weil es ja gilt, die Soll-Anstellung der Stützrollen beizubehalten. Mit einer Verstellung der Arbeitswalze müssen somit auch die Bezugspunkte um das gleiche Maß verstellt werden.As a result of these measures, the adjustment of the support rollers is not adjusted to the travel of the actuators, but to a fixed reference point, the load-related deflections of the work roll can be compensated for regardless of the deflection of the support bracket for the support rollers. The deviations from the target position of the work roll can be determined with the aid of the measuring devices provided, which determine the actual position of the support rollers, with respect to a fixed reference system, which allows simple adjustment of the actuators in order to maintain the target position. This room Fixed reference system is given by the reference points against which the position of the support rollers is measured. If the work roll cannot be adjusted, these reference points for setting the actuators are actually fixed in space. If there is an option for the work roll, the reference points must of course be stationary with regard to the position of the work roll, because it is important to maintain the desired position of the support rollers. With an adjustment of the work roll, the reference points must also be adjusted by the same amount.

Da gemäß der Vorrichtung nach der Erfindung die Lage der Arbeitswalze über die Anstellung der Stützrollen hinsichtlich eines raumfesten Bezugsystems geregelt wird, wird jede Verformung der Arbeitswalze unmittelbar erfaßt und durch eine entsprechende Verstellung der Stützrollen ausgeglichen, so daß das zu richtende Blech bzw. die zu biegenden Blechschüsse unter konstanten Arbeitsverhältnissen bearbeitet werden. Eine Kontrolle des Richtergebnisses bzw. des Einrollergebnisses zur Korrektur der'Maschineneinstellung ist nicht erforderlich.Since according to the device according to the invention the position of the work roll is regulated by the employment of the support rollers with respect to a fixed reference system, any deformation of the work roll is immediately detected and compensated for by a corresponding adjustment of the support rollers, so that the sheet to be straightened or the one to be bent Sheet metal sections are processed under constant working conditions. It is not necessary to check the judging result or the roll-in result to correct the machine setting.

Werden die Bezugspunkte durch ein parallel zur Arbeitswalze verlaufendes Lineal gebildet, so ergeben sich besonders einfache Konstruktionsverhältnisse, weil die Bezugspunkte gemeinsam festgelegt sind. Es muß nur darauf geachtet werden, daß die auftretenden Kräfte nicht auf das Lineal einwirken können, um tatsächlich raumfeste Bezugspunkte sicherstellen zu können. Aus diesem Grunde soll das Lineal momentfrei abgestützt sein. Bei einer solchen momentfreien Abstützung kann die Bagerung des Lineals auch auf dem Stützträger für die Stützrollen erfolgen, weil sich die Trägerverforumung nicht auf das Lineal auswirken kann. Die Lagerung des Lineals auf dem Träger hat den Vorteil, daß die räumliche Zuordnung des Lineals zur Arbeitswalze auch bei einer Verstellung der Arbeitswalze erhalten bleibt, da ja der Träger für die Stützrollen mitverstellt wird. Bei nicht verstellbaren Arbeitswalzen ist es jedoch günstiger, wenn das Lineal außerhalb des Trägers auf eigenen Lagerböcken gelagert ist. Mit dem Vorsehen eigener Lagerböcke kann jede belastungsbedingte Lagenänderung des Lineals ausgeschlossen werden.If the reference points are formed by a ruler running parallel to the work roll, this results in particularly simple construction conditions because the reference points are defined together. It is only necessary to ensure that the forces that occur cannot act on the ruler in order to be able to actually ensure fixed reference points. For this reason, the ruler should be supported without torque. With such a moment-free support, the ruler can also be mounted on the support bracket for the support rollers, because the support forum cannot affect the ruler. The storage of the ruler on the support has the advantage that the spatial assignment of the ruler to the work roll is retained even when the work roll is adjusted, since the support for the support rollers is also adjusted. In the case of non-adjustable work rolls, however, it is cheaper if the ruler is on its own storage outside the carrier trestle is stored. With the provision of separate pedestals, any change in the position of the ruler due to load can be excluded.

Obwohl es für die Wirkung der erfindungsgemäßen Maßnahmen nur darauf ankommt, daß die Abweichung der Ist-Anstellung der Stützrollen von der Soll-Anstellung gemessen wird, wobei die Ausbildung der hiefür vorgesehenen Meßeinrichtung unerheblich ist, können besonders einfache Verhältnisse dadurch erzielt werden, daß die Meßeinrichtung jeweils aus einem den Stützrollen zugeordneten Meßfühler und einem am Lineal vorgesehenen Meßwertgeber besteht. Als Meßwertgeber können induktive oder kapazitive Geber dienen, die ein berührungsloses Messen zulassen. Die Anordnung der Meßwertgeber auf dem Lineal bringt den Vorteil mit sich, daß die Meßwertgeber nicht mit den Stützrollen mitbewegt werden müssen.Although it is only important for the effect of the measures according to the invention that the deviation of the actual position of the support rollers from the target position is measured, the design of the measuring device provided for this being immaterial, particularly simple ratios can be achieved in that the measuring device each consists of a sensor assigned to the support rollers and a sensor provided on the ruler. Inductive or capacitive sensors, which allow contactless measurement, can serve as sensors. The arrangement of the sensors on the ruler has the advantage that the sensors do not have to be moved with the support rollers.

An Stelle einer mechanischen oder elektromagnetischen Meßeinrichtung kann selbstverständlich auch eine optische MeBeinrichtung, beispielsweise unter Verwendung von Laserstrahlen Verwendung finden. Bei solchen optischen Meßeinrichtungen erübrigen sich auch Bezugslineale od. dgl., da die Lichtstrahlen als Bezugsystem dienen können.Instead of a mechanical or electromagnetic measuring device, it is of course also possible to use an optical measuring device, for example using laser beams. With such optical measuring devices, reference rulers or the like are also unnecessary, since the light beams can serve as a reference system.

In der Zeichnung ist der Erfindungsgegenstand beispielsweise dargestellt. Es zeigen

  • Fig. 1 eine erfindungsgemäße Vorrichtung zum Abstützen der Arbeitswalzen einer Richtmaschine im Längsschnitt,
  • Fig. 2 eine Richtmaschine mit einer gegenüber der Ausbildung nach Fig. 1 abgewandelten Abstützvorrichtung im Querschnitt,
  • Fig. 3 eine Abstützvorrichtung nach der Erfindung bei einer Dreiwalzenbiegemaschine und
  • Fig. 4 die Steuerung der Stelltriebe zur Anstellung der Stützrollen schematisch im Blockschaltbild.
The subject matter of the invention is shown in the drawing, for example. Show it
  • 1 shows a device according to the invention for supporting the work rolls of a straightening machine in longitudinal section,
  • 2 shows a straightening machine with a supporting device modified in cross-section compared to the design according to FIG. 1,
  • Fig. 3 shows a support device according to the invention in a three-roll bending machine and
  • Fig. 4 shows the control of the actuators for the employment of the support rollers schematically in the block diagram.

Wie Fig. 1 zeigt, werden die unteren Arbeitswalzen 1 einer Blechrichtmaschine durch über die Länge der Arbeitswalzen 1 verteilte Stützrollen 2 gegen ein unerwünschtes Durchbiegen abgestützt. Die ebenfalls erforderliche Abstützung der oberen Arbeitswalzen 3 wird in üblicher Weise über weitere Stützrollen durchgeführt, was jedoch aus Übersichtlichkeitsgründen nicht dargestellt ist.As shown in FIG. 1, the lower work rolls 1 of a sheet straightening machine are supported against undesired bending by support rollers 2 distributed over the length of the work rolls 1. The also required Ab Support of the upper work rolls 3 is carried out in the usual way via further support rollers, but this is not shown for reasons of clarity.

Die Stützrollen 2 für die unteren Arbeitswalzen 1 können mit Hilfe von Stelltrieben 4 angestellt werden, die auf einem Träger 5 gelagert sind. Der Träger 5 wird in seitlichen Ständern 6 des Maschinenrahmens gehalten.Die auf die Arbeitswalzen 1 wirkenden Kräfte werden daher zum Teil über die Stützrollen 2 und die Stelltriebe 4 auf den Träger 5 abgetragen, so daß dieser Träger 5 einer Biegebeanspruchung unterworfen wird. Bei einer Durchbiegung des Trägers 5 werden aber die Stützrollen 2 entsprechend der örtlichen Durchbiegung mitgenommen, so daß der ursprünglich über die Stützrollen 2 eingestellte Verlauf der Arbeitswalzen 1 nicht mehr gewährleistet werden kann. Um nun unabhängig von den jeweils auftretenden Belastungsverhältnissen den gewünschten Verlauf der Arbeitswalzen 1 sicherstellen zu können, ist ein parallel zu den Arbeitswalzen vorgesehenes Lineal 7 vorgesehen, das raumfeste und damit von der Durchbiegung des Trägers 5 unabhängige Bezugspunkte zur Messung der jeweiligen Anstellung der einzelnen Stützrollen 2 bildet. Die Meßeinrichtung 8 für die Bestimmung der Ist-Anstellung der Stützrollen 2 besteht dabei jeweils aus einem induktiven oder kapazitiven Meßwertgeber 9, der mit einem entsprechenden Meßfühler 10 zusammenwirkt. Gemäß dem Ausführungsbeispiel sind die Meßwertgeber 9 auf dem Lineal 7 angeordnet, während die Meßfühler 10 den Stützrollen 2 zugehören. Bei der in Fig. 1 dargestellten Ausführungsform der Stelltriebe 4 als Hydraulikzylinder ergibt sich eine besondere konstruktive Vereinfachung, wenn die Meßfühler 10 unmittelbar an den Kolben 11 angeschlossen sind.The support rollers 2 for the lower work rolls 1 can be adjusted with the aid of actuators 4 which are mounted on a carrier 5. The carrier 5 is held in the side uprights 6 of the machine frame. The forces acting on the work rolls 1 are therefore partly carried away via the support rollers 2 and the actuators 4 on the carrier 5, so that this carrier 5 is subjected to a bending stress. If the support 5 bends, the support rollers 2 are taken along in accordance with the local deflection, so that the course of the work rolls 1 originally set via the support rollers 2 can no longer be guaranteed. In order to be able to ensure the desired course of the work rolls 1 regardless of the load conditions occurring in each case, a ruler 7 is provided parallel to the work rolls, the fixed reference point and thus independent of the deflection of the support 5 for measuring the respective position of the individual support rolls 2 forms. The measuring device 8 for determining the actual position of the support rollers 2 consists in each case of an inductive or capacitive transducer 9 which interacts with a corresponding sensor 10. According to the exemplary embodiment, the sensors 9 are arranged on the ruler 7, while the sensors 10 belong to the support rollers 2. In the embodiment of the actuators 4 as a hydraulic cylinder shown in FIG. 1, there is a particular design simplification if the sensors 10 are connected directly to the piston 11.

Da das Lineal 7 auf eigenen Lagerböcken 12 außerhalb des Trägers 5 momentfrei abgestützt ist, zu welchem Zweck das Lineal 7 auf der einen Seite über eine eine Längsverschiebung zulassende Lasche 13 angelenkt ist, sind die Meßwertgeber 9 raumfest angeordnet, so daß jede Stützrollenverstellung registriert werden kann, auch wenn diese Stützrollenverstellungen nicht über die Stelltriebe 4 erfolgen. Auf Grund dieser Möglichkeit der Erfassung der Ist-Anstellung kann über die gemessene Soll-Istwertdifferenz jeder Stelltrieb 4 entsprechend nachgestellt werden. Zu diesem Zweck sind Regeleinrichtungen 14 vorgesehen, die an die Meßwertgeber 9 angeschlossen sind und in Abhängigkeit der festgestellten Soll-Istwertdifferenz die Stelltriebe 4 ansteuern. In Fig. 4 ist diese Ansteuerung über ein entsprechendes Regelventil 15 angedeutet, das den Beaufschlagungsdruck für den jeweiligen Hydraulikzylinder steuert. Die Steuerung der Stelltriebe kann selbstverständlich je nach Konstruktionsart unterschiedlich ausfallen.Since the ruler 7 is supported on its own pedestals 12 outside of the carrier 5, for which purpose the ruler 7 is articulated on one side via a tab 13 which allows a longitudinal displacement, the transducers 9 are arranged fixed in space so that each support roller adjustment can be registered, even if these support roller adjustments are not carried out via the actuators 4. On the basis of this possibility of recording the actual position, each actuator 4 can be adjusted accordingly via the measured difference between the actual value and the target value. For this purpose, control devices 14 are provided which are connected to the transducers 9 and which actuate the actuators 4 as a function of the setpoint / actual value difference which has been determined. In Fi g . 4, this control is indicated by a corresponding control valve 15, which controls the pressure applied to the respective hydraulic cylinder. The control of the actuators can of course vary depending on the type of construction.

Nach Fig. 2 sind die Stützrollen 2 für die Arbeitswalzen 1 einer Richtmaschine reihenweise in gemeinsamen Rahmen 16 gelagert, so daß. jede Stützrollenreihe über die Rahmen 16 für sich verstellt werden kann, was die gleiche Anstellung der.Stützrollen 2 an alle Arbeitswalzen 1 und damit eine Konstruktionsvereinfachung zur Folge hat, obwohl selbstverständlich jede Arbeitswalze über die über die Länge der Arbeitswalze verteilten Stützrollen über ihre Länge unterschiedlich abgestützt werden kann. Die auf die Rahmen 16 wirkenden Stelltriebe 4 sind im Ausführungsbeispiel nach Fig. 2 als Keiltriebe ausgebildet, die mit Hilfe von gegensinnig wirkenden Hydraulikzylindern 17 beaufschlagt werden. An Stelle je eines Hydraulikzylinders 17 können für die einem Rahmen 16 zugeordneten Keiltriebe auch nur ein gemeinsamer Hydraulikzylinder vorgesehen sein, was jedoch nur eine Parallelverstellung des Rahmens 16 erlaubt. Die Ansteuerung der Stelltriebe 4 über die Hydraulikzylinder 17 erfolgt wiederum über entsprechende Regeleinrichtungen 14, die an entsprechende Meßwertgeber 9 zur Bestimmung der Ist-Anstellung der Stützrollen 2 angeschlossen sind, wie dies in Fig. 4 angedeytet ist.2, the support rollers 2 for the work rolls 1 of a straightening machine are mounted in rows in a common frame 16, so that. each row of support rollers can be adjusted for itself via the frame 16, which results in the same position of the support rollers 2 on all work rolls 1 and thus a design simplification, although of course each work roll is supported differently over its length over the support rolls distributed over the length of the work roll can be. The actuating drives 4 acting on the frame 16 are designed in the exemplary embodiment according to FIG. 2 as wedge drives which are acted upon by hydraulic cylinders 17 acting in opposite directions. Instead of one hydraulic cylinder 17 each, only one common hydraulic cylinder can be provided for the wedge drives assigned to a frame 16, but this only permits parallel adjustment of the frame 16. The actuation of the actuators 4 via the hydraulic cylinders 17 takes place in turn via corresponding control devices 14 which are connected to corresponding sensors 9 for determining the actual position of the support rollers 2, as indicated in FIG. 4.

Um auch bei Biegemaschinen eine lastabhängige Durchbiegung der Arbeitswalzen 1 verhindern zu können, können die Arbeitswalzen durch entsprechend angeordnete Stützrollen 2 in Abhängigkeit von der auftretenden Last unterschiedlich abgestützt werden, wie dies in Fig. 3 an Hand einer Dreiwalzenbiegemaschine gezeigt wird. Die Stützrollen 2, die ähnlich der Richtmaschine nach Fig. 2 gruppenweise in einem gemeinsamen Rahmen 16 gelagert sind, werden in gleicher Art und Weise über die Stelltriebe 4 nachgestellt, wenn sich auf Grund sich ändernder Belastungsverhältnisse eine Durchbiegung der Arbeitswalzen 1 ergäbe. Diese gegenüber dem Lineal 7, das die für die Festlegung der Soll-Anstellung erforderlichen, raumfesten Bezugspunkte bildet, über die Meßeinrichtungen 8 festgestellten Änderungen der Arbeitswalzendurchbiegung führen über einel Soll-Istwertvergleich zu einer Korrektur der Stützrollenanstellung, so daß die Form der Arbeitswalzen unabhängig von den auftretenden Belastungsverhältnissen konstant gehalten werden kann. Die beim Anbiegen der Bleche 18 auftretenden höheren Belastungskräfte führen folglich nicht zu einer stärkeren-Durchbiegung der Arbeitswalzen. Der gerade Verlauf der Erzeugenden der eingerollten Bleche 18 bleibt daher über den ganzen Biegebereich erhalten.In order to be able to prevent load-dependent bending of the work rolls 1 even in bending machines the work rolls are supported differently by correspondingly arranged support rollers 2 as a function of the load occurring, as is shown in FIG. 3 using a three-roll bending machine. The support rollers 2, which are mounted in groups in a common frame 16 similarly to the straightening machine according to FIG. 2, are adjusted in the same way via the actuating drives 4 if there would be a deflection of the work rolls 1 due to changing load conditions. Compared to the ruler 7, which forms the fixed reference points required for the determination of the desired position, the changes in the work roll deflection determined via the measuring devices 8 lead to a correction of the support roll adjustment via a set actual value comparison, so that the shape of the work rolls is independent of the occurring load conditions can be kept constant. The higher load forces occurring when the sheets 18 are bent do not therefore result in a greater deflection of the work rolls. The straight course of the generatrix of the rolled sheets 18 is therefore retained over the entire bending range.

Claims (5)

1. Vorrichtung zum Abstützen einer Arbeitswalze einer Blechbiege- oder -richtmaschine mit über die Länge der Arbeitswalze verteilten Stützrollen, die über Stelltriebe auf einem Träger abgestützt sind, dadurch gekennzeichnet, daß jedem Stelltrieb (4) ein die Soll-Anstellung der Stützrollen (2) bei unbelastetem Stützträger (5) bestimmender, hinsichtlich der Anstellage der Arbeitswalze (1) raumfester Bezugspunkt und eine Meßeinrichtung (8) für die Abweichung der Ist-Anstellung von der durch den Bezugspunkt gegebenen Soll-Anstellung zugeordnet ist und daß die Stelltriebe (4) über eine Regeleinrichtung (14) in Abhäbngigkeit von der gegebenen Soll-Istwertdifferenz ansteuerbar sind.1. Device for supporting a work roll of a sheet metal bending or straightening machine with support rollers distributed over the length of the work roll, which are supported on actuators on a support, characterized in that each actuating drive (4) has a desired position of the support rollers (2). in the case of an unloaded support beam (5), the reference point which is fixed in space with regard to the position of the work roll (1) and a measuring device (8) for the deviation of the actual position from the target position given by the reference point and that the actuators (4) are assigned a control device (14) can be controlled as a function of the given target / actual value difference. 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Bezugspunkte durch ein parallel zur Arbeitswalze (1) verlaufendes Lineal (7) gebildet sind.2. Device according to claim 1, characterized in that the reference points are formed by a ruler (7) running parallel to the work roll (1). 3. Vorrichtung nach Anspruch 1 und 2, dadurch gekennzeichnet, daß das Lineal (7) momentfrei abgestützt ist.3. Apparatus according to claim 1 and 2, characterized in that the ruler (7) is supported without torque. 4. Vorrichtung nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß das Lineal (7) außerhalb des Trägers (5) auf eigenen Lagerböcken (12) gelagert ist.4. Apparatus according to claim 2 or 3, characterized in that the ruler (7) outside the carrier (5) is mounted on its own bearing blocks (12). 5. Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Meßeinrichtung (8) jeweils aus einem den Stützrollen (2) zugeordneten MeßfÜhler (10) und einem am Lineal (7) vorgesehenen Meßwertgeber (9) besteht.5. Device according to one of claims 1 to 4, characterized in that the measuring device (8) each comprises a sensor (10) assigned to the support rollers (2) and a sensor (9) provided on the ruler (7).
EP81890015A 1980-02-21 1981-01-27 Device for supporting the working roll of a sheet bending or levelling machine Expired EP0035009B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT953/80 1980-02-21
AT0095380A AT365485B (en) 1980-02-21 1980-02-21 DEVICE FOR SUPPORTING A WORK ROLL OF A BENDING OR LEVELING MACHINE

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EP0035009A1 true EP0035009A1 (en) 1981-09-02
EP0035009B1 EP0035009B1 (en) 1983-07-06

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AT (1) AT365485B (en)
DE (1) DE3160541D1 (en)

Cited By (14)

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DE3437777A1 (en) * 1984-10-16 1986-04-24 Fr. W. Schnutz GmbH & Co, 5900 Siegen SUPPORT ROLLER ADJUSTMENT FOR LEVELING MACHINES
EP0274722A2 (en) * 1987-01-10 1988-07-20 Sms Schloemann-Siemag Aktiengesellschaft Straightening machine for plate and strips
EP0556408A1 (en) * 1991-09-10 1993-08-25 Nippon Steel Corporation Plate rolling machine
EP0570770A1 (en) * 1992-05-21 1993-11-24 Sms Schloemann-Siemag Aktiengesellschaft Method and machine for straightening plates and strips
EP0767014A1 (en) * 1995-10-06 1997-04-09 Kvaerner Clecim Straightening machine with parallel cylinders
WO2002040191A2 (en) * 2000-11-17 2002-05-23 Usinor Sa Device and method for calibrating a multiple-roller flattener
US7530250B2 (en) 2004-08-28 2009-05-12 Sms Demag Ag Method for straightening a metal strip and straightening machine
CN102357581A (en) * 2011-09-23 2012-02-22 中冶南方工程技术有限公司 Strip stretch bending leveller
WO2013135688A1 (en) * 2012-03-15 2013-09-19 Sms Siemag Ag Apparatus for straightening metal strip
CN106216436A (en) * 2016-08-29 2016-12-14 苏州康鸿智能装备股份有限公司 A kind of intelligent measure reshaping device
DE102017124027A1 (en) 2017-10-16 2019-04-18 Schuler Automation Gmbh & Co. Kg Method, device and computer program product for adjusting the bending of at least one straightening roller of a roller straightening machine
WO2019187995A1 (en) * 2018-03-28 2019-10-03 新東工業株式会社 Roll press device
US11292047B2 (en) * 2019-05-03 2022-04-05 Ford Global Technologies Mechanical die pressure monitoring system
DE102021101054A1 (en) 2021-01-19 2022-07-21 Kohler Maschinenbau Gmbh Straightening machine for straightening metal strips or flat metal parts, and method for operating such a machine

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DE3337957A1 (en) * 1983-10-19 1985-05-02 SMS Schloemann-Siemag AG, 4000 Düsseldorf Sheet leveller

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Cited By (29)

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Publication number Priority date Publication date Assignee Title
DE3437777A1 (en) * 1984-10-16 1986-04-24 Fr. W. Schnutz GmbH & Co, 5900 Siegen SUPPORT ROLLER ADJUSTMENT FOR LEVELING MACHINES
EP0182062A2 (en) * 1984-10-16 1986-05-28 Fr.W. SCHNUTZ GMBH & CO. Backing-up roll adjustment for straightening machines
EP0182062A3 (en) * 1984-10-16 1987-09-30 Schnutz Fr W Gmbh & Co Backing-up roll adjustment for straightening machines
EP0274722A2 (en) * 1987-01-10 1988-07-20 Sms Schloemann-Siemag Aktiengesellschaft Straightening machine for plate and strips
EP0274722A3 (en) * 1987-01-10 1989-12-20 Sms Schloemann-Siemag Aktiengesellschaft Straightening machine for plate and strips
EP0556408A1 (en) * 1991-09-10 1993-08-25 Nippon Steel Corporation Plate rolling machine
EP0556408A4 (en) * 1991-09-10 1995-05-24 Nippon Steel Corp
US5609054A (en) * 1991-09-10 1997-03-11 Nippon Steel Corporation Rolling mill for flat products
EP0570770A1 (en) * 1992-05-21 1993-11-24 Sms Schloemann-Siemag Aktiengesellschaft Method and machine for straightening plates and strips
EP0767014A1 (en) * 1995-10-06 1997-04-09 Kvaerner Clecim Straightening machine with parallel cylinders
FR2739578A1 (en) * 1995-10-06 1997-04-11 Clecim Sa PARALLEL CYLINDER PLANER
US5758534A (en) * 1995-10-06 1998-06-02 Kvaerner Clecim Leveling machine with a parallel cylinders
WO2002040191A3 (en) * 2000-11-17 2003-01-16 Usinor Sa Device and method for calibrating a multiple-roller flattener
FR2816856A1 (en) * 2000-11-17 2002-05-24 Usinor Device, for calibrating multi-roll flattener, incorporates measuring plate with positioning system and transverse rows of strain gauges that measure elastic deformation across plate
WO2002040191A2 (en) * 2000-11-17 2002-05-23 Usinor Sa Device and method for calibrating a multiple-roller flattener
KR100780462B1 (en) * 2000-11-17 2007-11-28 아르셀러 프랑스 Device and method for calibrating a multiple-roller flattener
US7530250B2 (en) 2004-08-28 2009-05-12 Sms Demag Ag Method for straightening a metal strip and straightening machine
CN102357581A (en) * 2011-09-23 2012-02-22 中冶南方工程技术有限公司 Strip stretch bending leveller
WO2013135688A1 (en) * 2012-03-15 2013-09-19 Sms Siemag Ag Apparatus for straightening metal strip
JP2015509852A (en) * 2012-03-15 2015-04-02 エス・エム・エス・ジーマーク・アクチエンゲゼルシャフト Equipment for straightening strips
CN106216436A (en) * 2016-08-29 2016-12-14 苏州康鸿智能装备股份有限公司 A kind of intelligent measure reshaping device
DE102017124027A1 (en) 2017-10-16 2019-04-18 Schuler Automation Gmbh & Co. Kg Method, device and computer program product for adjusting the bending of at least one straightening roller of a roller straightening machine
WO2019076886A1 (en) * 2017-10-16 2019-04-25 Schuler Pressen Gmbh Method, apparatus and computer program product for setting the bending of at least one straightening roller of a roller straightening machine
CN111328299A (en) * 2017-10-16 2020-06-23 舒勒压力机有限责任公司 Method, device and computer program product for setting the curvature of at least one straightening roll of a roll straightening machine
US11596989B2 (en) 2017-10-16 2023-03-07 Schuler Pressen Gmbh Method and computer program product for setting the bending of at least one straightening roller of a roller straightening machine
WO2019187995A1 (en) * 2018-03-28 2019-10-03 新東工業株式会社 Roll press device
JPWO2019187995A1 (en) * 2018-03-28 2021-04-08 新東工業株式会社 Roll press equipment
US11292047B2 (en) * 2019-05-03 2022-04-05 Ford Global Technologies Mechanical die pressure monitoring system
DE102021101054A1 (en) 2021-01-19 2022-07-21 Kohler Maschinenbau Gmbh Straightening machine for straightening metal strips or flat metal parts, and method for operating such a machine

Also Published As

Publication number Publication date
DE3160541D1 (en) 1983-08-11
EP0035009B1 (en) 1983-07-06
AT365485B (en) 1982-01-25
ATA95380A (en) 1981-06-15

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