EP0916425B1 - Apparatus for straightening a rolled section - Google Patents

Apparatus for straightening a rolled section Download PDF

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Publication number
EP0916425B1
EP0916425B1 EP19980121249 EP98121249A EP0916425B1 EP 0916425 B1 EP0916425 B1 EP 0916425B1 EP 19980121249 EP19980121249 EP 19980121249 EP 98121249 A EP98121249 A EP 98121249A EP 0916425 B1 EP0916425 B1 EP 0916425B1
Authority
EP
European Patent Office
Prior art keywords
roller
fact
rolled steel
controller
steel section
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
EP19980121249
Other languages
German (de)
French (fr)
Other versions
EP0916425A1 (en
Inventor
Bruno Böhmer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SMS Siemag AG
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SMS Siemag AG
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Filing date
Publication date
Priority to DE19750816 priority Critical
Priority to DE1997150816 priority patent/DE19750816A1/en
Application filed by SMS Siemag AG filed Critical SMS Siemag AG
Publication of EP0916425A1 publication Critical patent/EP0916425A1/en
Application granted granted Critical
Publication of EP0916425B1 publication Critical patent/EP0916425B1/en
Anticipated expiration legal-status Critical
Application status is Expired - Fee Related legal-status Critical

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D3/00Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
    • B21D3/02Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts by rollers
    • B21D3/05Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts by rollers arranged on axes rectangular to the path of the work

Description

Die vorliegende Erfindung betrifft eine Rollenrichtmaschine zum Richten eines Walzprofils, mit einem Profileinlauf zum Einführen des Walzprofils in die Rollenrichtmaschine und mit einer Anzahl von Biegerollen zum Richten des Walzprofils, (siehe zB DE-A-32 36 236). The present invention relates to a roller leveler for leveling a rolled steel section, having a profile inlet for introducing the rolled steel section into the roller leveler, and with a number of bending rollers for straightening the rolled section, (see for example DE-A-32 36 236).

Derartige Rollenrichtmaschinen sind bspw. aus dem veröffentlichten Prospekt Nr. WZ/3123-"Rollenrichtmaschinen für schwere Walzprofile und Schienen" der SMS Schloemann-Siemag Aktiengesellschaft in Düsseldorf bekannt. Such roller straightening machines are eg. The published brochure no. WZ / 3123- "roller straightening machine for heavy rolled sections and rails" of SMS Schloemann-Siemag Aktiengesellschaft in Dusseldorf known.

Beim Richten von Walzprofilen soll idealerweise ein absolut gerades Profil erzeugt werden. Stretching of rolled sections an absolutely straight profile to be generated ideally. In der Praxis ist das Walzprofil jedoch leicht gebogen, weist also einen zwar großen, aber nicht unendlichen Krümmungsradius auf. In practice, the rolled section is, however, slightly curved, so has a true great, but not infinite radius of curvature. Die Bogenhöhe, die ein Walzprofil mit einer Sehne zwischen den Enden des Walzprofils einschließt, ist somit in erster Näherung proportional zum Quadrat der Länge des Walzprofils. The arch height, which includes a roll profile with a chord between the ends of the roll profile, is thus in a first approximation proportional to the square of the length of the rolled section. Die Norm EN 10034 fordert jedoch eine lineare Abhängigkeit der maximalen Bogenhöhe von der Länge des Walzprofils. However, the standard EN 10034 calls for a linear dependence of the maximum bow height from the length of the rolled section. Lange Walzprofile müssen daher eine größere Geradheit aufweisen als kurze Walzprofile. Long rolled sections must therefore have a greater straightness as short rolled sections. Dies führt bei langen Walzprofilen zu erheblichen Problemen. This results in long rolled sections to significant problems.

Die Aufgabe der vorliegenden Erfindung besteht darin, eine Rollenrichtmaschine zur Verfügung zu stellen, welche auch lange Walzprofile mit der von der EN 10034 geforderten Genauigkeit richten kann. The object of the present invention is to provide a roller straightener available, which may make even long rolled sections with the information required by the EN 10034 accuracy.

Die Aufgabe wird bei einer gattungsgemäßen Rollenrichtmaschine dadurch gelöst, The object is achieved in a generic multi-roll leveler in

  • daß die Rollenrichtmaschine mindestens eine durch ein Anstellelement anstellbare Auslaufrolle zum Führen des gerichteten Walzprofils aufweist, that the roller leveler contains at least one engaging member engagable by a discharge roller for guiding the leveled rolled profile,
  • daß der Auslaufrolle eine Lagesensoreinrichtung zum Erfassen des Ortes des Walzprofils in einem vorbestimmten Abstand von der Auslaufrolle nachgeschaltet ist, that the discharge roller has a position sensor device connected downstream for detecting the location of the rolled section at a predetermined distance from the outlet roller,
  • daß die Lagesensoreinrichtung zum Übermitteln des Ortes mit einem Anstellregler für die Auslaufrolle verbunden ist, that the position sensor means is for transmitting the location connected to a Anstellregler for the outfeed roller,
  • daß der Regler aus dem erfaßten Ort ein Anstellsignal für das Anstellelement ermittelt und an das Anstellelement ausgibt und that the controller determines from the detected location of an adjusting signal for the adjusting element and outputs it to the adjusting element and
  • daß das Anstellelement die Auslaufrolle entsprechend dem Anstellsignal anstellt. that the adjusting element hires the outlet roller in accordance with the adjusting signal.

Eine Reduzierung der nach dem Richten eventuell noch vorhandenen Restkrümmung ist mit verschiedenen Reglercharakteristiken möglich. A reduction in after leveling any remaining residual curvature is possible with various controller characteristics. Besonders vorteilhaft ist jedoch, wenn der Regler als Regler mit Integralanteil ausgebildet ist. However, it is particularly advantageous if the controller is designed as a controller with an integral component.

Wenn die Lagesensoreinrichtung mindestens einen Laser und mindestens einen Fotosensor aufweist, ist eine besonders genaue Messung des Ortes des Walzprofils möglich. If the position sensor device has at least one laser and at least one photo sensor, a particularly accurate measurement of the location of the roll profile is possible. Mit Lasern und Fotosensoren läßt sich bspw. eine Genauigkeit bis zu 0,1 mm erreichen. With lasers and photosensors accuracy can be for example. Reach up to 0.1 mm. Je nach Anwendungsfall sind aber auch andere Sensoreinrichtungen verwendbar, zB solche mit Ultraschallsensoren. Depending on the application, but other sensor devices are used, for example those with ultrasonic sensors.

Die Restkrümmung des gerichteten Walzprofils läßt sich besonders genau bestimmen, wenn der Ort des Walzprofils von der Lagesensoreinrichtung durch Triangulation ermittelt wird. The residual curvature of the directed roll profile can be determined particularly accurately if the location of the roll profile is determined by the location sensor device by triangulation.

Wenn der Regler eine einstellbare Regelverstärkung aufweist, läßt sich das tatsächlich gerichtete Istprofil dem Sollprofil noch weiter annähern. If the controller has an adjustable controller gain, the actually directed actual profile can be further closer to the desired profile.

Wenn durch das Anstellen der Auslaufrolle der Ort des Walzprofils in vertikaler Richtung variiert wird und bei der Ermittlung des Anstellsignals für das Anstellelement eine Referenzdurchbiegung des Walzprofils berücksichtigt wird, lassen sich systematische Fehler beim Richten des Walzprofils vermeiden. If the location of the roll profile is varied in the vertical direction by hiring the exit roller and a reference deflection of the roll profile is taken into account when determining the Anstellsignals for the adjusting element, to systematic errors in judging the roll profile can be avoided.

Weitere Vorteile und Einzelheiten ergeben sich aus der nachfolgenden Beschreibung eines Ausführungsbeispiels. Further advantages and details will emerge from the following description of an embodiment. Dabei zeigen show Here

Figur 1 Figure 1
eine Prinzipdarstellung einer Rollenrichtmaschine, a schematic representation of a roller straightening machine,
Figur 2 Figure 2
eine Prinzipdarstellung der Anstellung der Auslaufrolle und a schematic diagram of the adjustment of the exit roller and
Fig. 3 und 4 FIGS. 3 and 4
Krümmungsverläufe von Walzprofilen. Curvatures of rolled sections.

Gemäß Fig. 1 wird ein Walzprofil 1 über einen Profileinlauf 2 und eine Einlaufrolle 3 zu Biegerollen 4 geführt. Referring to FIG. 1, a roll profile 1 via an inlet profile 2 and a feed roller 3 is guided to bending rollers 4. Die Biegerollen 4 richten das Walzprofil 1 derart, daß es möglichst gerade ist. The bending rollers 4 set up the rolled profile 1 in such a way that it is as straight as possible. Von den Biegerollen 4 wird das Walzprofil 1 weiter über eine Auslaufrolle 5 zu einem Rollengang mit Transportrollen geleitet. Of the bending rollers 4, the rolled section 1 is passed via a discharge roller 5 to a roller conveyor with transport rollers. Von den Transportrollen des Rollengangs ist nur eine, bezeichnet mit dem Bezugszeichen 6, dargestellt. Of the transport rollers of the roller path is only one, designated by the reference numeral 6, is shown. Der Abstand zwischen der Auslaufrolle 5 und der ersten Transportrolle 6 des Rollengangs beträgt ca. 3 m. The distance between the discharge roller 5 and the first transport roller 6 of the roller path is approximately 3 m.

Zwischen der Auslaufrolle 5 und der ersten Transportrolle 6 ist eine Lagesensoreinrichtung 7 zum Erfassen des Ortes des Walzprofils angeordnet. Between the discharge roller 5 and the first transport roller 6, a position sensor 7 for detecting the location of the roll profile is arranged. Die Lagesensoreinrichtung 7 weist drei Laserdioden 8 und drei Fotodioden 9 auf. The position sensor device 7 comprises three laser diodes 8 and three photodiodes. 9 Mittels der Dioden 8, 9 wird der Ort des Walzprofils an vorbestimmten Abständen x 1 , x 2 , x 3 von der Auslaufrolle 5 ermittelt. By means of the diodes 8, 9, the location of the rolled section at predetermined distances x 1, x 2, x 3 is determined by the exit roller. 5 Systembedingt wird dabei das erste Trägerstück von der Länge eines halben Richtrollenabstandes nicht erfaßt, da dieses Trägerstück nicht gerichtet ist. the first carrier piece Due to the system not covered by the length of half a straightening roller distance as this support piece is not directed.

Auf der Basis der so erfaßten Orte des Walzprofils 1 ermittelt dann ein Microcontroller 10 durch Triangulation den tatsächlichen Krümmungsradius des Walzprofils 1. Dieser Krümmungsradius wird als Istwert weiter an einen Anstellregler 11 übermittelt. Based on the so detected locations of the rolled section 1 then a microcontroller 10 through triangulation determines the actual radius of curvature of the rolled section 1. This radius of curvature is sent as actual value to a further Anstellregler. 11

Gemäß Ausführungsbeispiel erfolgt in der Lagesensoreinrichtung 7 eine Vorverarbeitung der erfaßten Orte. According to embodiment, a pre-processing of places sensed occurs in the position sensor device. 7 Alternativ könnte die Verarbeitung aber auch im Anstellregler 11 erfolgen. Alternatively, the processing could also be done in Anstellregler 11th

In einem Sollwertgeber 12 ist als Referenzdurchbiegung die natürliche Durchbiegung des Walzprofils 1 abgespeichert, welche sich ergäbe, wenn das Walzprofil 1 absolut (bzw. ideal) gerade gerichtet würde. In a reference value generator 12, the natural deflection of the roll section 1 is stored as a reference deflection which would result if the roll profile 1 absolute (or ideal) would be straightened. Diese Referenzdurchbiegung wird dem Regler 11 als Sollwert vorgegeben. This reference deflection is the controller 11 defined as the setpoint. Aus der Differenz von Sollwert und Istwert, multipliziert mit einer einstellbaren Regelverstärkung V, ermittelt der Regler 11 dann ein Anstellsignal für ein Anstellelement 13, mittels dessen die Auslaufrolle 5 derart anstellbar ist, daß der Ort des Walzprofils 1 in vertikaler Richtung variiert wird. From the difference between nominal and actual value, multiplied by an adjustable control gain V, the controller 11 then determines an adjusting signal for an adjusting element 13, by means of which the run-out roller 5 is such adjustably that the location of the rolled section 1 is varied in the vertical direction. Das Anstellelement 13 stellt dann die Auslaufrolle 5 entsprechend diesem Anstellsignal an. The engaging member 13 then adjusts the outlet roller 5 in accordance with this adjusting signal.

Der Regler 11 ist im vorliegenden Fall als I- oder PI-Regler ausgebildet. The controller 11 is formed in the present case as I- or PI controllers. Er weist also einen Integralanteil auf. He has an integral component.

Gemäß Fig. 2 ist das Anstellelement 13 als Elektromotor ausgebildet. Referring to FIG. 2, the engaging member 13 is formed as an electric motor. Das Anstellelement 13 verstellt dabei eine Gewindespindel 14, an deren einem Ende die Auslaufrolle 5 angeordnet ist, über ein Schnekkengetriebe 15. Alternativ wäre auch eine direkte Anstellung der Auslaufrolle 5 z. The engaging member 13 thereby adjusting a threaded spindle 14, at one end of the discharge roller 5 is arranged via a worm gear 15. Alternatively, it would also be a direct adjustment of the discharge roller 5 z. B. durch einen Hydraulikzylinder möglich. B. possible by a hydraulic cylinder.

Die Figuren 3 und 4 zeigen nunmehr Walzprofile 1-1 und 1-2, die beim Richten mit der erfindungsgemäßen Richtmaschine erzeugt werden. Figures 3 and 4 show now rolled sections 1-1 and 1-2, which are generated during straightening with the inventive leveler. Wie aus den Figuren ersichtlich ist, weisen die Walzprofile 1-1, 1-2 erheblich geringere maximale Bogenhöhen z 1 , z 2 auf als ein Walzprofil 1-3, welches mit einer Rollenrichtmaschine nach dem Stand der Technik gerichtet wird und eine maximale Bogenhöhe z 3 aufweist. As can be seen from the figures, have the rolled sections 1-1, 1-2 significantly lower maximum bow height z 1, z 2 than a rolled section 1-3, which is directed with a roller straightening machine according to the prior art and a maximum arc height z 3 has. Ferner ist insbesondere in Fig. 3 ersichtlich, daß der Krümmungsradius des Walzprofils 1-1 entlang einer Laufrichtung x zunimmt, das Walzprofil 1-1 also erheblich gerader wird. Further, it can be seen in particular in Fig. 3 that the radius of curvature of the rolled section 1-1 x increases along a traveling direction, the roll profile 1-1 is thus substantially straight. Beim Walzprofil 1-2 gemäß Fig. 4, bei dem dem Regler 11 eine größere Regelverstärkung V vorgegeben wurde als beim Richten des Walzprofils 1-1, weist die Bogenhöhe z über die Laufrichtung x sogar einen Nulldurchgang auf. When rolled section 1-2 of FIG. 4, in which the controller 11 a higher control gain V was given as during straightening of the rolled section 1-1, the arc height z above the x direction even at a zero crossing.

Die obenstehend beschriebene Rollenrichtmaschine richtet das Walzprofil 1 in vertikaler und horizontaler Richtung. The roller leveler above-described directs the rolled profile 1 in vertical and horizontal directions. Um die Krümmung in der horizontalen Ebene genauso zu beeinflussen, wie für die vertikale Ebene beschrieben, muß lediglich an den Orten x 1 , x 2 , x 3 nicht nur die Auslenkung in z-Richtung erfaßt werden, sondern auch die horizontale Abweichung. In order to influence the curvature in the horizontal plane just as described for the vertical plane, not only must the deflection in the z-direction are detected only at the locations x 1, x 2, x 3, but also the horizontal deviation. Die Korrektur des Krümmungsradius kann dann über ein - der besseren Übersichtlichkeit halber nicht dargestelltes - Auslaufrollenpaar erfolgen, welches links und rechts des zu richtenden Walzprofils 1 angeordnet ist und über einen entsprechenden Anstellantrieb verstellbar ist. The correction of the radius of curvature may then via a - carried outlet roller pair which is arranged to the left and right of the to be straightened rolled section 1 and is adjustable via a respective adjusting drive - the sake of clarity not shown. Als besonders vorteilhaft stellt sich bei dem erfindungsgemäßen Regelkreis heraus, daß es nicht erforderlich ist, kurze Regeleingriffe vorzunehmen, sondern daß es ausreicht, die Tendenz der Krümmung des Walzprofils auszuregeln. Particularly advantageous turns out the invention at the control circuit, that it is not necessary to perform short control interventions, but that it suffices to steer the tendency of the curvature of the roll profile.

Bezugszeichenliste LIST OF REFERENCE NUMBERS

1, 1-1, 1-2, 1-3 1, 1-1, 1-2, 1-3
Walzprofile rolled profiles
2 2
Profileinlauf tread entry
3 3
Einlaufrolle infeed roller
4 4
Biegerollen bending rolls
5 5
Auslaufrollen exit rollers
6 6
Transportrollen transport wheels
7 7
Lagesensoreinrichtung Position sensor device
8 8th
Laserdioden laser diodes
9 9
Fotodioden photodiodes
10 10
Microcontroller microcontrollers
11 11
Regler regulator
12 12
Sollwertgeber Setpoint generator
13 13
Anstellelement adjusting element
14 14
Gewindespindel screw
15 15
Schneckengetriebe worm gear
16 16
Abschnitt section
V V
Regelverstärkung Control gain
x x
Laufrichtung direction
x 1 , x 2 , x 3 x 1, x 2, x 3
Orte places
z, z 1 , z 2 , z 3 z, z 1, z 2, z 3
Bogenhöhen arch heights

Claims (6)

  1. A roller leveler for leveling a rolled steel section (1),
    with an inlet (2) for introducing the rolled steel section (1) into the roller leveler, and
    with a series of bending rollers (4) for leveling the rolled steel section (1),
    characterized by the fact
    that the roller leveler contains at least one outlet roller (5) that can be adjusted by an adjusting element (13) and serves for guiding the leveled rolled steel section (1), by the fact
    that a position sensor arrangement (7) for determining the position of the rolled steel section (1) at a predetermined distance (x1, x2, x3) from the outlet roller (5) is arranged downstream of the outlet roller (5), by the fact that
    the position sensor arrangement (7) is connected to an adjustment controller (11) for the outlet roller (5) in order to transmit the position, by the fact
    that the controller (11) generates an adjusting signal for the adjusting element (13) from the determined position and transmits this adjusting signal to the adjusting element (13), and by the fact
    that the adjusting element (13) adjusts the outlet roller (5) in accordance with the adjusting signal.
  2. The roller leveler according to Claim 1, characterized by the fact that the controller (11) is realized in the form of a controller with an integral-action component.
  3. The roller leveler according to Claim 1 or 2, characterized by the fact that the position sensor arrangement (7) contains at least one laser (8) and at least one photosensor (9).
  4. The roller leveler according to Claim 1, 2 or 3, characterized by the fact that the position sensor arrangement (7) determines the position of the rolled steel section (1) by means of triangulation.
  5. The roller leveler according to one of the preceding claims, characterized by the fact that the controller (11) has an adjustable controller gain (V).
  6. The roller leveler according to one of the preceding claims, characterized by the fact that the position of the rolled steel section (1) is varied in the vertical direction by adjusting the outlet roller (5), and by the fact that a reference deflection of the rolled steel section (1) is taken into account in determining the adjusting signal for the adjusting element (13).
EP19980121249 1997-11-17 1998-11-07 Apparatus for straightening a rolled section Expired - Fee Related EP0916425B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19750816 1997-11-17
DE1997150816 DE19750816A1 (en) 1997-11-17 1997-11-17 Roller leveler for leveling a rolled section

Publications (2)

Publication Number Publication Date
EP0916425A1 EP0916425A1 (en) 1999-05-19
EP0916425B1 true EP0916425B1 (en) 2003-04-23

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EP19980121249 Expired - Fee Related EP0916425B1 (en) 1997-11-17 1998-11-07 Apparatus for straightening a rolled section

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US (1) US6029485A (en)
EP (1) EP0916425B1 (en)
JP (1) JP4255545B2 (en)
AT (1) AT238111T (en)
DE (1) DE19750816A1 (en)

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Also Published As

Publication number Publication date
AT238111T (en) 2003-05-15
JP4255545B2 (en) 2009-04-15
EP0916425A1 (en) 1999-05-19
US6029485A (en) 2000-02-29
DE19750816A1 (en) 1999-05-20
JPH11216518A (en) 1999-08-10

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