EP0634235B1 - Straightening machine for rolled profiles, especially H-profiles - Google Patents

Straightening machine for rolled profiles, especially H-profiles Download PDF

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Publication number
EP0634235B1
EP0634235B1 EP94110510A EP94110510A EP0634235B1 EP 0634235 B1 EP0634235 B1 EP 0634235B1 EP 94110510 A EP94110510 A EP 94110510A EP 94110510 A EP94110510 A EP 94110510A EP 0634235 B1 EP0634235 B1 EP 0634235B1
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EP
European Patent Office
Prior art keywords
straightening
bushing
worm
machine according
straightening machine
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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.)
Expired - Lifetime
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EP94110510A
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German (de)
French (fr)
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EP0634235A1 (en
Inventor
Bruno Böhmer
Werner Schumacher
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SMS Siemag AG
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SMS Schloemann Siemag AG
Schloemann Siemag AG
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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

Definitions

  • the invention relates to a straightening machine for rolled beams, in particular H-beams, in which at least one of the two straightening disks which lie against the inside of the carrier flanges and are supported by a straightening shaft on a mounting bush can be axially adjusted by means of a drive in order to adjust the outer dimension of the straightening disks.
  • H-beams can be rolled with different flange thicknesses
  • the adjustment time on the roll stand is about 30 seconds.
  • the current straightening practice in a straightening machine downstream of the carrier line provides that the beams are moved lying on the flanges into the straightening machine and then run with the web over the straightening disks. That means the flanges must be plastically deformed during straightening and all the required straightening forces must be conducted into the flanges via the web and the transition radius from the web to the flanges. Since the flanges also begin to breathe due to the deformation of the web and exert an axial force - clamping the carrier - on the straightening discs, an axially stable construction is required.
  • the straightening disks are therefore fixed to a flange or mounting bushing via a spacer bushing or spacer washers, corresponding to the dimensions of the chamber, and completely replaced if necessary.
  • This assembly bushing unit is placed directly on the straightening shaft and axially clamped there by means of a clamping nut or a clamping head. In the case of a changed chamber dimension due to different flange thicknesses, this is equivalent to a very time-consuming changeover time, since each chamber dimension deviation inevitably leads to a change in the assembly bushing unit.
  • EP-A-0 472 765 has made it known as the latest state of the art to arrange several straightening disks on a sliding sleeve arranged on feather keys on the assembly bushing and, if necessary, that to bring one or another straightening disc from the inside to the support flange of the H-beam to be straightened.
  • a rotatable or rotatable ring is arranged on a threaded sleeve surrounding the pin of the directional axis, the rotational movement of which is converted into a translational movement of the sliding sleeve.
  • a very complex sleeve arrangement is required.
  • the invention has for its object to provide a straightening machine of the type mentioned, which allows the outside in a simple manner. or to change the chamber dimensions of the straightening discs quickly.
  • this object is achieved in that the straightening disk (s) is (are) permanently connected to an annular sleeve or displacement sleeve, which is acted upon directly by a worm gear drive and is axially movable on the assembly bushing.
  • the worm wheel set in rotation thus has a direct translational effect on the one to be adjusted Straightening disk or straightening disks, which are adjusted to a larger or smaller distance from one another in accordance with the changed flange thickness dimension of the carrier.
  • Very large adjustment ranges can be achieved by means of the worm wheel drive acting directly on the ring sleeve or displacement bushing according to the invention, wherein only differently dimensioned worm wheels need to be installed; the worm wheel drive for shifting the straightening disc can be easily retrofitted in existing straightening machines, since only the assembly bushing clamped with the straightening pin of the straightening shaft has to be changed. It is not necessary to change the existing directional shaft connection and, furthermore, no bearings in the axial direction are required.
  • a preferred embodiment provides that the worm wheel is mounted between the straightening disks on an assembly bushing enclosing the straightening pin of the straightening shaft and has wheel hubs on both sides which have external threads meshing with a corresponding internal thread of the ring sleeves. Due to the wheel hubs, there is a wheel widening with a smaller diameter than the worm wheel, and due to the intermeshing ring sleeve and wheel hub threads designed as a trapezoidal thread, the ring sleeves on the trapezoidal thread of the wheel hubs shift inwards or outwards, which is advantageously via a screw connection the associated ring sleeves attached alignment discs are taken; when moving, the two straightening discs cover the same adjustment paths.
  • the worm housing is connected to an annular sleeve via a torque support so that torques arising during the transition from the rotor to the translatory movement can be absorbed harmlessly. It is sufficient here to provide only one of the two ring sleeves with a torque support.
  • worm wheel drive provides that the worm wheel is arranged at a distance from the outer, facing the free end of the straightening shaft in the socket body of a clamping head and meshes on the one hand with the worm shaft mounted in the socket body and on the other hand via an internal thread with an external thread of the sliding bush .
  • the worm wheel is arranged at a distance from the outer, facing the free end of the straightening shaft in the socket body of a clamping head and meshes on the one hand with the worm shaft mounted in the socket body and on the other hand via an internal thread with an external thread of the sliding bush .
  • the sliding bush or the axially movable straightening disks are arranged on feather key guides of the assembly bushing, so that a torque transmission of the straightening disks is ensured via form-fitting connections.
  • FIG. 1 and 2 essentially only the straightening pins 4 are shown of a roller straightening machine which is connected to an upper and lower straightening shafts 3 and is arranged downstream of a carrier line for hot-rolling H-beams 1, 2.
  • a mounting or flange bushing 5 is arranged on the straightening pin 4 and carries two straightening disks 7, 8 or 107, 108 (see FIG. 2) spaced apart according to the chamber dimension 6 of the carrier 1 or 2;
  • the directional disks 7a, 8a and 107a, 108a which are positioned from above against the web 9 of the carrier 1 or 2, are also indicated.
  • the straightening disks rest on the flanges 10 of the beams 1 and 2 entering the straightening machine from the inside of the flanges 10.
  • the mounting bush 5 - and also the straightening disks 7, 8 or 107, 108 - is clamped to the straightening pin 4 with the aid of a clamping head 11 placed on the straightening shaft 3 from the free pin end; of the clamping head 11 symbolically indicated by an arrow, only a socket body 12 which overlaps the straightening pin 4 is shown in FIGS. 1 and 2.
  • the mounting bushing 5 is provided with feather keys 13, 14, which also act as feather key guides serve for the axial displacement of the straightening disks 7, 8 or 107, 108.
  • a worm wheel drive 15 or 16 (see FIG. 2) is arranged between the straightening disks 7, 8 and 107, 108.
  • This consists of a worm wheel 18 or 19 mounted on rolling elements 17 of the mounting bush 5 and a worm 21 meshing therewith and arranged in a worm housing 20.
  • the worm wheel 18 or 19 can be rotated in order to set it in rotation.
  • a handwheel or an electric or pneumatic screwdriver can be attached to a pin 22 of the screw 21.
  • the worm wheel has wheel hubs 23 on both sides, which are provided with an external thread 24 designed as a trapezoidal thread. These mesh with corresponding internal threads 25 of ring sleeves 26, which are fixed via screw connections 27 on the straightening disks 7, 8 and 107, 108, respectively.
  • the annular sleeve 26 assigned there to the inner aligning disk 7 is connected to the worm housing 20 via a torque support 28.
  • the worm wheel 18 and 19 runs with its part projecting into the worm housing 20 in rolling elements 29 arranged there, and the distance between the straightening discs 7, 8 or 107, 108 and the worm housing 20 is bridged by bellows 30.
  • threaded rings 31, 32 are screwed onto corresponding threaded sections of the mounting bush 5 until they rest against the aligning discs 7, 8 or 107, 108; the outer threaded ring 32 is also arranged on a feather key 33.
  • the tensioning of the straightening disks is first carried out by means of the clamping head 11 solved and the worm 20 and thus the worm wheel 18 and 19 rotated.
  • the ring sleeves move - in the event of a reduction in the distance between the straightening disks 26 with the associated straightening disks 7, 8 or 107, 108 inwards, that is to say they move towards one another.
  • the threaded nuts 31, 32 are readjusted until they rest on the outer surfaces of the straightening disks. Then the necessary bracing is restored with the help of the clamping head 11.
  • the height dimension 34 of the carrier 2 is substantially smaller than that of the carrier 1, so that the worm wheel 19 is correspondingly less wide than the worm wheel 18 according to FIG. 1.
  • the height dimension of the beam just entering is irrelevant for the described shifting technique, that is to say the processes always take place in the same way.
  • a worm wheel drive 35 for changing the distance between straightening disks 36, 37 the same components as those shown in FIGS. 1 to 3 are given the same reference numbers.
  • the worm wheel drive 35 is in front of the outer straightening disk 37, that is to say it is arranged facing the end of the straightening pin 4.
  • the worm 39 driven by a motor 38, is mounted in the socket body 12 of the clamping head 11, and the worm wheel 40 is also arranged in the socket body 12.
  • the worm wheel 40 is provided with an internal thread 41 which meshes with an external thread 42 of a sliding bush 44 guided on a feather key 43 of the mounting bush 5.
  • the directional disc 36 is arranged stationary, that is, it can be do not move.
  • the alignment disc 37 fastened on the sliding bush 44 between a threaded ring 47 screwed on from the inside and washers 48 on the outside be moved axially.

Abstract

A straightening machine for rolled profiles (beams) (1, 2, 49), especially H-profiles (I-section beams), in which at least one of the two straightening discs (7, 8 or 107, 108; 36, 37) carried by a straightening shaft (3) and bearing from the inside on the profile flanges (10), is axially adjustable, makes it possible to change the external or chamber dimension of the straightening discs rapidly and in a simple manner if a worm gear (15, 16; 35) is used for displacement of the straightening discs. <IMAGE>

Description

Die Erfindung betrifft eine Richtmaschine für gewalzte Träger, insbesondere H-Träger, bei der mindestens eine der beiden den Trägerflanschen von innen her anliegenden, von einer Richtwelle auf einer Montagebuchse getragenen Richtscheiben mittels eines Antriebs axial verstellbar ist, um das Außenmaß der Richtscheiben einzustellen.The invention relates to a straightening machine for rolled beams, in particular H-beams, in which at least one of the two straightening disks which lie against the inside of the carrier flanges and are supported by a straightening shaft on a mounting bush can be axially adjusted by means of a drive in order to adjust the outer dimension of the straightening disks.

Aus der DE-A-35 22 976 ist zum Richten von Schienen eine Richtmaschine bekannt, die auf der Richtwelle axial verstellbare Richtscheiben aufweist. Vor allem jedoch bei zu richtenden warmgewalzten Doppel-T- bzw. den eingangs genannten H-Trägern ist zu beachten, daß diese ein baureihenabhängiges konstantes Höhenmaß besitzen, während hingegen die Flanschdicken variieren können. Die Festlegung der Bauhöhe H ermöglicht im Stahlhochbau optimierte Anschlüsse (Knotenbleche) der Träger mit unterschiedlichen Widerstandsmomenten. Damit sich H-Träger mit verschiedenen Flanschdicken walzen lassen, ist es bekannt, in Trägerstraßen die Walzscheiben der Walze in den Walzgerüsten so zu verstellen, daß einerseits das konstante Höhenmaß des Trägers eingehalten wird, andererseits dennoch unterschiedliche Flanschdicken gewalzt werden können. Die Verstellzeit am Walzgerüst beträgt hierbei etwa 30 Sekunden.From DE-A-35 22 976 a straightening machine is known for straightening rails, which has axially adjustable straightening disks on the straightening shaft. Above all, however, with hot-rolled double T beams or the H beams mentioned at the outset, it should be noted that these have a constant height dimension depending on the series, whereas the flange thicknesses can vary. The determination of the height H enables optimized connections (gusset plates) of the girders with different resistance moments in steel buildings. So that H-beams can be rolled with different flange thicknesses, it is known to adjust the rolling disks of the roll in the rolling stands in carrier streets so that on the one hand the constant height dimension of the beam is maintained, and on the other hand different flange thicknesses can still be rolled. The adjustment time on the roll stand is about 30 seconds.

Die momentane Richtpraxis bei einer der Trägerstraße nachgeschalteten Richtmaschine sieht vor, daß die Träger auf den Flanschen liegend in die Richtmaschine gefahren werden und dann mit dem Steg über die Richtscheiben laufen. Das bedeutet, daß die Flansche während des Richtens plastisch verformt werden müssen und alle benötigten Richtkräfte über den Steg sowie den Übergangsradius vom Steg zu den Flanschen in die Flansche geleitet werden. Da durch die Verformung des Steges auch die Flansche zu atmen beginnen und eine axiale Kraft - Einklemmen des Trägers - auf die Richtscheiben ausüben, ist eine axial stabile Konstruktion erforderlich. Die Richtscheiben werden daher über eine Distanzbuchse bzw. Distanzscheiben, dem Kammermaß entsprechend, fest auf eine Flansch- bzw. Montagebuchse montiert und bei Bedarf komplett gewechselt. Diese Montagebuchseneinheit wird direkt auf die Richtwelle gesetzt und dort axial mittels einer Spannmutter bzw. eines Spannkopfes gespannt. Bei einem aufgrund unterschiedlicher Flanschdicken geänderten Kammermaß ist das gleichbedeutend mit einer sehr zeitaufwendigen Umrüstzeit, da jede Kammermaßabweichung zwangsläufig zu einem Wechsel der Montagebuchseneinheit führt.The current straightening practice in a straightening machine downstream of the carrier line provides that the beams are moved lying on the flanges into the straightening machine and then run with the web over the straightening disks. That means the flanges must be plastically deformed during straightening and all the required straightening forces must be conducted into the flanges via the web and the transition radius from the web to the flanges. Since the flanges also begin to breathe due to the deformation of the web and exert an axial force - clamping the carrier - on the straightening discs, an axially stable construction is required. The straightening disks are therefore fixed to a flange or mounting bushing via a spacer bushing or spacer washers, corresponding to the dimensions of the chamber, and completely replaced if necessary. This assembly bushing unit is placed directly on the straightening shaft and axially clamped there by means of a clamping nut or a clamping head. In the case of a changed chamber dimension due to different flange thicknesses, this is equivalent to a very time-consuming changeover time, since each chamber dimension deviation inevitably leads to a change in the assembly bushing unit.

Um Anpassungen an ein sich änderndes Kammermaß ohne die Notwendigkeit des Wechselns der gesamten Montagebuchseneinheit zu erreichen, ist es durch die EP-A-0 472 765 nächster Stand der Technik bekanntgeworden, mehrere Richtscheiben auf einer über Paßfedern auf der Montagebuchse angeordneten Verschiebehülse anzuordnen und bedarfsweise die eine oder andere Richtscheibe von innen zur Anlage an den Trägerflansch des zu richtenden H-Trägers zu bringen. Zur axialen Verstellung der Verschiebehülse ist auf einer den Zapfen der Richtachse umschließenden Gewindehülse ein rotierbarer bzw. drehbarer Ring angeordnet, dessen Rotationsbewegung in eine translatorische Bewegung der Verschiebehülse umgesetzt wird. Auch hier ist wiederum eine sehr aufwendige Hülsenanordnung erforderlich.In order to achieve adaptations to a changing chamber dimension without the need to change the entire assembly bushing unit, EP-A-0 472 765 has made it known as the latest state of the art to arrange several straightening disks on a sliding sleeve arranged on feather keys on the assembly bushing and, if necessary, that to bring one or another straightening disc from the inside to the support flange of the H-beam to be straightened. For the axial adjustment of the sliding sleeve, a rotatable or rotatable ring is arranged on a threaded sleeve surrounding the pin of the directional axis, the rotational movement of which is converted into a translational movement of the sliding sleeve. Here again, a very complex sleeve arrangement is required.

Der Erfindung liegt die Aufgabe zugrunde, eine Richtmaschine der eingangs genannten Art zu schaffen, die es auf einfache Weise erlaubt, das Außen. bzw. Kammermaß der Richtscheiben schnell zu verändern.The invention has for its object to provide a straightening machine of the type mentioned, which allows the outside in a simple manner. or to change the chamber dimensions of the straightening discs quickly.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Richtscheibe(n) fest mit einer von einem Schneckenradantrieb direkt beaufschlagten, auf der Montagebuchse axial beweglichen Ringhülse bzw. Verschiebebuchse verbunden ist (sind). Das in Drehung versetzte Schneckenrad wirkt somit direkt translatorisch auf die zu verstellende Richtscheibe bzw. Richtscheiben ein, die entsprechend dem geänderten Flanschdickenmaß des Trägers auf einen größeren oder kleineren Abstand zueinander verstellt werden. Mittels des erfindungsgemäß direkt auf die Ringhülse bzw. Verschiebebuchse einwirkenden Schneckenradantriebes lassen sich sehr große Verstellbereiche verwirklichen, wobei gegebenenfalls lediglich unterschiedlich bemessene Schneckenräder montiert zu werden brauchen; der Schneckenradantrieb zur Richtscheibenverschiebung läßt sich auf einfache Weise in bestehenden Richtmaschinen nachrüsten, da nur die mit dem Richtzapfen der Richtwelle verspannte Montagebuchse geändert werden muß. Eine Änderung des bestehenden Richtwellenanschlusses ist nicht erforderlich, und außerdem werden keine Lagerstellen in axialer Richtung benötigt.According to the invention, this object is achieved in that the straightening disk (s) is (are) permanently connected to an annular sleeve or displacement sleeve, which is acted upon directly by a worm gear drive and is axially movable on the assembly bushing. The worm wheel set in rotation thus has a direct translational effect on the one to be adjusted Straightening disk or straightening disks, which are adjusted to a larger or smaller distance from one another in accordance with the changed flange thickness dimension of the carrier. Very large adjustment ranges can be achieved by means of the worm wheel drive acting directly on the ring sleeve or displacement bushing according to the invention, wherein only differently dimensioned worm wheels need to be installed; the worm wheel drive for shifting the straightening disc can be easily retrofitted in existing straightening machines, since only the assembly bushing clamped with the straightening pin of the straightening shaft has to be changed. It is not necessary to change the existing directional shaft connection and, furthermore, no bearings in the axial direction are required.

Eine bevorzugte Ausführung sieht vor, daß das Schneckenrad zwischen den Richtscheiben auf einer den Richtzapfen der Richtwelle umschließenden Montagebuchse gelagert ist und beidseitig Radnaben besitzt, die mit einem entsprechenden Innengewinde der Ringhülsen kämmende Außengewinde aufweisen. Bedingt durch die Radnaben ergibt sich eine Radverbreiterung mit einem gegenüber dem Schneckenrad kleineren Durchmesser, und aufgrund der miteinander kämmenden, als Trapezgewinde ausgebildeten Ringhülsen- und Radnabengewinde verschieben sich die Ringhülsen auf dem Trapezgewinde der Radnaben nach innen oder außen, wobei die vorteilhaft über eine Schraubverbindung an den zugehörigen Ringhülsen befestigten Richtscheiben mitgenommen werden; beim Verschieben legen die beiden Richtscheiben somit gleiche Verstellwege zurück.A preferred embodiment provides that the worm wheel is mounted between the straightening disks on an assembly bushing enclosing the straightening pin of the straightening shaft and has wheel hubs on both sides which have external threads meshing with a corresponding internal thread of the ring sleeves. Due to the wheel hubs, there is a wheel widening with a smaller diameter than the worm wheel, and due to the intermeshing ring sleeve and wheel hub threads designed as a trapezoidal thread, the ring sleeves on the trapezoidal thread of the wheel hubs shift inwards or outwards, which is advantageously via a screw connection the associated ring sleeves attached alignment discs are taken; when moving, the two straightening discs cover the same adjustment paths.

Es empfiehlt sich, daß das Schneckengehäuse über eine Momentenstütze mit einer Ringhülse verbunden ist, so daß beim Übergang von der rotorischen in die translatorische Bewegung entstehende Drehmomente unschädlich aufgenommen werden können. Hier reicht es aus, lediglich die eine der beiden Ringhülsen mit einer Momentenstütze zu versehen.It is recommended that the worm housing is connected to an annular sleeve via a torque support so that torques arising during the transition from the rotor to the translatory movement can be absorbed harmlessly. It is sufficient here to provide only one of the two ring sleeves with a torque support.

Eine andere vorteilhafte Ausführung des Schneckenradantriebes sieht vor, daß das Schneckenrad mit Abstand vor der äußeren, dem freien Ende der Richtwelle zugewandten Richtscheibe im Buchsenkörper eines Spannkopfes angeordnet ist und einerseits mit der im Buchsenkörper gelagerten Schneckenwelle und andererseits über ein Innengewinde mit einem Außengewinde der Verschiebebuchse kämmt. In diesem Fall wird zur Einstellung bzw. Anpassung an ein neues Abstands- bzw. Kammermaß der Richtscheiben lediglich die eine, nämlich auf dem Richtzapfen äußere Richtscheibe verschoben.Another advantageous embodiment of the worm wheel drive provides that the worm wheel is arranged at a distance from the outer, facing the free end of the straightening shaft in the socket body of a clamping head and meshes on the one hand with the worm shaft mounted in the socket body and on the other hand via an internal thread with an external thread of the sliding bush . In this case, to adjust or adapt to a new distance or chamber dimension of the straightening disks, only the one, namely the outer straightening disk, is shifted.

Durch das Verschieben der mit den Gewindehülsen verbundenen Richtscheiben bzw. der auf der Verschiebebuchse angeordneten Richtscheibe läßt sich auf einfache Weise weiterhin auch eine Anpassung an das beim Richtrollen-Wechsel noch nicht feststehende Soll-Maß des Richtscheibenabstandes erreichen. Es brauchen lediglich die Richtscheibenverschlüsse solange offengelassen zu werden, bis der erste gewalzte Stab des neuen Trägerprofils vermessen und danach, bspw. durch Einlegen von Scheiben oder durch Schraubverstellung, das Soll-Maß des Richtscheibenabstandes eingestellt worden ist. In gleicher Weise läßt sich auch ein Walzenverschleiß ausgleichen.By moving the straightening disks connected to the threaded sleeves or the straightening disk arranged on the sliding bush, an adaptation to the target dimension of the straightening disk distance which is not yet fixed when changing the straightening roller can also be achieved in a simple manner. It is only necessary to leave the straightening disc locks open until the first rolled rod of the new carrier profile has been measured and then the target dimension of the straightening disc spacing has been set, for example by inserting washers or by screw adjustment. Roller wear can also be compensated for in the same way.

Es wird vorgeschlagen, daß die Verschiebebuchse bzw. die axialbeweglichen Richtscheiben auf Paßfederführungen der Montagebuchse angeordnet sind, so daß eine Momentenübertragung der Richtscheiben über formschlüssige Verbindungen gewährleistet wird.It is proposed that the sliding bush or the axially movable straightening disks are arranged on feather key guides of the assembly bushing, so that a torque transmission of the straightening disks is ensured via form-fitting connections.

Weitere Merkmale und Vorteile der Erfindung ergeben sich aus den Ansprüchen und der nachfolgenden Beschreibung, in der in den Zeichnungen dargestellte Ausführungsbeispiele des Gegenstandes der Erfindung näher erläutert sind. Es zeigen:

Figur 1
als Einzelheit im Halbschnitt einen Richtzapfen einer Richtwelle einer Rollenrichtmaschine mit zwischen den Richtscheiben angeordnete Schneckenradantrieb;
Figur 2
eine der Figur 1 entsprechende Darstellung mit demgegenüber kleinerem, an die geringere Höhe des zu richtenden Trägers angepaßtem Schneckenrad des Schneckenradantriebes;
Figur 3
den Schneckenradantrieb gemäß Figur 1 entlang der Linie III-III geschnitten; und
Figur 4
eine der Figur 1 entsprechende Darstellung des Zapfenendes einer Richtwelle mit demgegenüber außerhalb der Richtscheiben angeordnetem Schneckenradantrieb, im Teilquerschnitt dargestellt.
Further features and advantages of the invention result from the claims and the following description, in which exemplary embodiments of the subject matter of the invention illustrated in the drawings are explained in more detail. Show it:
Figure 1
as a detail in half section a straightening pin of a straightening shaft of a roller straightening machine with worm wheel drive arranged between the straightening disks;
Figure 2
a representation corresponding to Figure 1 with a smaller, adapted to the lower height of the support to be adjusted worm gear of the worm gear;
Figure 3
cut the worm wheel drive according to Figure 1 along the line III-III; and
Figure 4
a representation corresponding to Figure 1 of the pin end of a straightening shaft with the worm gear drive, on the other hand, arranged outside the straightening disks, shown in partial cross section.

Von einer einer nicht dargestellten Trägerstraße zum Warmwalzen von H-Trägern 1, 2 nachgeschalteten, obere und untere Richtwellen 3 besitzenden Rollenrichtmaschine sind in den Figuren 1 und 2 im wesentlichen lediglich die Richtzapfen 4 gezeigt. Auf dem Richtzapfen 4 ist eine Montage- bzw. Flanschbuchse 5 angeordnet, die zwei entsprechend dem Kammermaß 6 des Trägers 1 bzw. 2 voneinander beabstandete Richtscheiben 7, 8 bzw. 107, 108 (vgl. Figur 2) trägt; angedeutet sind auch die von oben her gegen den Steg 9 des Trägers 1 bzw. 2 angestellten Richtscheiben 7a, 8a bzw. 107a, 108a. Außerdem liegen die Richtscheiben den auf ihren Flanschen 10 in die Richtmaschine einlaufenden Trägern 1 bzw. 2 von den Innenseiten der Flansche 10 her an.In FIG. 1 and 2, essentially only the straightening pins 4 are shown of a roller straightening machine which is connected to an upper and lower straightening shafts 3 and is arranged downstream of a carrier line for hot-rolling H-beams 1, 2. A mounting or flange bushing 5 is arranged on the straightening pin 4 and carries two straightening disks 7, 8 or 107, 108 (see FIG. 2) spaced apart according to the chamber dimension 6 of the carrier 1 or 2; The directional disks 7a, 8a and 107a, 108a, which are positioned from above against the web 9 of the carrier 1 or 2, are also indicated. In addition, the straightening disks rest on the flanges 10 of the beams 1 and 2 entering the straightening machine from the inside of the flanges 10.

Die Montagebuchse 5 - und ebenso die Richtscheiben 7, 8 bzw. 107, 108 - ist mit dem Richtzapfen 4 mit Hilfe eines von dem freien Zapfenende her auf die Richtwelle 3 aufgesetzten Spannkopfes 11 verspannt; von dem durch einen Pfeil symbolisch angedeuteten Spannkopf 11 ist in den Figuren 1 und 2 lediglich ein den Richtzapfen 4 übergreifender Buchsenkörper 12 gezeigt. Die Montagebuchse 5 ist mit Paßfedern 13, 14 versehen, die gleichzeitig als Paßfeder-Führungen zum axialen Verschieben der Richtscheiben 7, 8 bzw. 107, 108 dienen. Zwischen den Richtscheiben 7, 8 bzw. 107, 108 ist ein Schneckenradantrieb 15 bzw. 16 (vgl. Figur 2) angeordnet. Dieser besteht aus einem auf Wälzkörpern 17 der Montagebuchse 5 gelagerten Schneckenrad 18 bzw. 19 und einer damit kämmenden, in einem Schneckengehäuse 20 angeordneten Schnecke 21. Um das Schneckenrad 18 bzw. 19 in Drehung zu versetzen, kann - wie sich aus Figur 3 ergibt - auf einen Zapfen 22 der Schnecke 21 ein Handrad oder ein Elektro- oder Preßluftschrauber aufgesteckt werden. Das Schneckenrad besitzt beidseitig Radnaben 23, die mit einem als Trapezgewinde ausgebildeten Außengewinde 24 versehen sind. Diese kämmen mit entsprechenden Innengewinden 25 von Ringhülsen 26, die über Schraubverbindungen 27 an den Richtscheiben 7, 8 bzw. 107, 108 festgelegt sind.The mounting bush 5 - and also the straightening disks 7, 8 or 107, 108 - is clamped to the straightening pin 4 with the aid of a clamping head 11 placed on the straightening shaft 3 from the free pin end; of the clamping head 11 symbolically indicated by an arrow, only a socket body 12 which overlaps the straightening pin 4 is shown in FIGS. 1 and 2. The mounting bushing 5 is provided with feather keys 13, 14, which also act as feather key guides serve for the axial displacement of the straightening disks 7, 8 or 107, 108. A worm wheel drive 15 or 16 (see FIG. 2) is arranged between the straightening disks 7, 8 and 107, 108. This consists of a worm wheel 18 or 19 mounted on rolling elements 17 of the mounting bush 5 and a worm 21 meshing therewith and arranged in a worm housing 20. As can be seen in FIG. 3, the worm wheel 18 or 19 can be rotated in order to set it in rotation. a handwheel or an electric or pneumatic screwdriver can be attached to a pin 22 of the screw 21. The worm wheel has wheel hubs 23 on both sides, which are provided with an external thread 24 designed as a trapezoidal thread. These mesh with corresponding internal threads 25 of ring sleeves 26, which are fixed via screw connections 27 on the straightening disks 7, 8 and 107, 108, respectively.

Wie in Figur 1 gezeigt ist, ist die dort der inneren Richtscheibe 7 zugeordnete Ringhülse 26 über eine Momentenstütze 28 mit dem Schneckengehäuse 20 verbunden. Das Schneckenrad 18 bzw. 19 läuft mit seinem in das Schneckengehäuse 20 hineinragenden Teil in dort angeordneten Wälzkörpern 29, und der Abstand zwischen den Richtscheiben 7, 8 bzw. 107, 108 und dem Schneckengehäuse 20 wird von Faltenbälgen 30 überbrückt. Jeweils von den Außenseiten her gegen die Richtscheiben 7, 8 bzw. 107, 108 angestellte Gewinderinge 31, 32 sind auf entsprechende Gewindeabschnitte der Montagebuchse 5 bis völlig zur Anlage gegen die Richtscheiben 7, 8 bzw. 107, 108 aufgeschraubt; der äußere Gewindering 32 ist zudem auf einer Paßfeder 33 angeordnet.As shown in FIG. 1, the annular sleeve 26 assigned there to the inner aligning disk 7 is connected to the worm housing 20 via a torque support 28. The worm wheel 18 and 19 runs with its part projecting into the worm housing 20 in rolling elements 29 arranged there, and the distance between the straightening discs 7, 8 or 107, 108 and the worm housing 20 is bridged by bellows 30. In each case from the outer sides against the aligning discs 7, 8 or 107, 108 threaded rings 31, 32 are screwed onto corresponding threaded sections of the mounting bush 5 until they rest against the aligning discs 7, 8 or 107, 108; the outer threaded ring 32 is also arranged on a feather key 33.

Sollen die Richtscheiben 7, 8 bzw. 107, 108 auf einen entweder kleineren oder größeren Abstand zueinander verstellt werden, was abhängig ist von der geänderten Dicke der Flansche 11 des einlaufenden Trägers 1 bzw. 2, so wird mittels Spannkopf 11 zunächst die Verspannung der Richtscheiben gelöst und die Schnecke 20 und damit das Schneckenrad 18 bzw. 19 verdreht. Dabei verschieben sich - im Falle der Verkleinerung des Abstandes der Richtscheiben - die Ringhülsen 26 mit den dazugehörigen Richtscheiben 7, 8 bzw. 107, 108 nach innen, das heißt, sie bewegen sich aufeinanderzu. Ist der gewünschte Abstand eingestellt, der sich bspw. mit einer Schablone oder Schiebelehre kontrollieren läßt, werden die Gewindemuttern 31, 32 nachgestellt, bis sie an den Außenflächen der Richtscheiben anliegen. Danach wird mit Hilfe des Spannkopfes 11 die notwendige Verspannung wieder hergestellt.If the straightening disks 7, 8 or 107, 108 are to be adjusted to either a smaller or larger distance from one another, which is dependent on the changed thickness of the flanges 11 of the incoming beam 1 or 2, the tensioning of the straightening disks is first carried out by means of the clamping head 11 solved and the worm 20 and thus the worm wheel 18 and 19 rotated. The ring sleeves move - in the event of a reduction in the distance between the straightening disks 26 with the associated straightening disks 7, 8 or 107, 108 inwards, that is to say they move towards one another. If the desired distance is set, which can be checked, for example, using a template or a slide gauge, the threaded nuts 31, 32 are readjusted until they rest on the outer surfaces of the straightening disks. Then the necessary bracing is restored with the help of the clamping head 11.

Werden hingegen - wie in Figur 2 dargestellt - Träger 2 mit einem von dem vorher eingelaufenen Träger baureihenabhängig wesentlich geringerem oder größerem Höhenmaß 34 gerichtet, muß beim Umbau ein neues Schneckenrad 19 montiert werden. Bei dem Ausführungsbeispiel nach Figur 2 ist das Höhenmaß 34 des Trägers 2 wesentlich kleiner als das des Trägers 1, so daß entsprechend das Schneckenrad 19 weniger breit als das Schneckenrad 18 gemäß Figur 1 ist. Für die beschriebene Verschiebetechnik ist das Höhenmaß des gerade einlaufenden Trägers jedoch ohne Belang, das heißt, die Abläufe finden stets in gleicher Weise statt.On the other hand, if - as shown in FIG. 2 - beam 2 is directed with a height dimension 34 which is significantly smaller or larger depending on the series previously run in, a new worm wheel 19 must be fitted during the conversion. In the embodiment according to FIG. 2, the height dimension 34 of the carrier 2 is substantially smaller than that of the carrier 1, so that the worm wheel 19 is correspondingly less wide than the worm wheel 18 according to FIG. 1. However, the height dimension of the beam just entering is irrelevant for the described shifting technique, that is to say the processes always take place in the same way.

Bei der Ausführung eines Schneckenradantriebes 35 zum Verändern des Abstandes zwischen Richtscheiben 36, 37 gemäß Fig. 4 sind mit den in den Figuren 1 bis 3 gezeigten übereinstimmende Bauteile mit denselben Bezugsziffern versehen. Der Schneckenradantrieb 35 ist hier der äußeren Richtscheibe 37 vorgelagert, das heißt dem Ende des Richtzapfens 4 zugewandt angeordnet. Die von einem Motor 38 angetriebene Schnecke 39 ist in dem Buchsenkörper 12 des Spannkopfes 11 gelagert, und auch das Schneckenrad 40 ist in dem Buchsenkörper 12 angeordnet. Das Schneckenrad 40 ist mit einem Innengewinde 41 versehen, das mit einem Außengewinde 42 einer auf einer Paßfeder 43 der Montagebuchse 5 geführten Verschiebebuchse 44 kämmt. Die in Figur 4 linke, innere Richtscheibe 36 ist gegen einen Bund 45 der Montagebuchse 5 verspannt, und von der Innenfläche her liegt ihr ein auf die Montagebuchse 5 geschraubter Gewindering 46 an; die Richtscheibe 36 ist stationär angeordnet, das heißt, sie läßt sich nicht verschieben. Hingegen kann die auf der Verschiebebuchse 44 zwischen einem von innen her aufgeschraubten Gewindering 47 und außen angelegten Beilagen 48 befestigte Richtscheibe 37 bei sich ändernder Dicke der Flansche 10 des Trägers 49 bzw. bei einem aus einer anderen Baureihe einlaufenden Träger mit einem demgegenüber wesentlich geänderten Höhenmaß 34 axial verschoben werden. Hierzu ist es lediglich erforderlich, mittels des Motors 38 die Schnecke 39 und damit das Schneckenrad 40 anzutreiben, dessen Drehbewegung sich aufgrund der miteinander kämmenden Gewinde 41 des Schneckenrades 40 bzw. 42 der Verschiebebuchse 44 in eine translatorische Bewegung umwandelt, wozu der Verschiebebuchse 44 eine außerdem an dem Buchsenkörper 12 befestigte Momentenstütze 50 zugeordnet ist. Es versteht sich, daß - wie im Zusammenhang mit den Figuren 1 und 3 beschrieben - bei Vestellbewegungen die von dem Spannkopf 11 aufgebrachte Verspannung zunächst gelöst und anschließend wieder hergestellt werden muß.In the embodiment of a worm wheel drive 35 for changing the distance between straightening disks 36, 37 according to FIG. 4, the same components as those shown in FIGS. 1 to 3 are given the same reference numbers. The worm wheel drive 35 is in front of the outer straightening disk 37, that is to say it is arranged facing the end of the straightening pin 4. The worm 39, driven by a motor 38, is mounted in the socket body 12 of the clamping head 11, and the worm wheel 40 is also arranged in the socket body 12. The worm wheel 40 is provided with an internal thread 41 which meshes with an external thread 42 of a sliding bush 44 guided on a feather key 43 of the mounting bush 5. The left, inner straightening disk 36 in FIG. 4 is braced against a collar 45 of the mounting bush 5, and from the inner surface there is a threaded ring 46 screwed onto the mounting bush 5; the directional disc 36 is arranged stationary, that is, it can be do not move. On the other hand, when the thickness of the flanges 10 of the carrier 49 changes, or in the case of a carrier coming in from another series with a height dimension 34 that has been significantly changed, the alignment disc 37 fastened on the sliding bush 44 between a threaded ring 47 screwed on from the inside and washers 48 on the outside be moved axially. For this purpose, it is only necessary to drive the worm 39 and thus the worm wheel 40 by means of the motor 38, the rotational movement of which, due to the intermeshing thread 41 of the worm wheel 40 or 42 of the sliding bush 44, converts into a translatory movement, for which purpose the sliding bush 44 also a attached to the socket body 12 torque support 50 is assigned. It goes without saying that - as described in connection with FIGS. 1 and 3 - during adjustment movements, the bracing applied by the clamping head 11 must first be released and then restored.

Claims (7)

  1. Straightening machine for rolled profiles, especially H-profiles, in which at least one of the two straightening plates (7, 8; 107, 108; 36, 37) contacting the profile flanges (10) from inside, supported by an alignment shaft (3) on an mounting bushing (5) is axially adjustable by means of a drive (15, 16; 35) in order to adjust the external dimension of the straightening plates,
    characterized in that
    the drive is a worm gear drive and that the straightening plate(s) (7, 8 or 107, 108 respectively) is (are) rigidly connected with a ring sleeve (26) or displacement bushing (24) directly actuated by the worm gear (15, 16; 35) and axially movable on the mounting bushing (5).
  2. Straightening machine according to claim 1,
    characterized in that
    the worm wheel (18, 19) between the straightening plates (7, 8 or 107, 108 respectively) is mounted on a mounting bushing (5) encompassing the alignment journals (4) of the alignment shaft (3) and has on both sides hubs (23) which have an external thread (24) engaging with a corresponding internal thread (25) of the ring sleeves (26).
  3. Straightening machine according to claim 1 or claim 2,
    characterized in that
    each ring sleeve (26) is attached to the relevant straightening plate (7, 8 or 107, 108 respectively) by means of a screwed connection (27).
  4. Straightening machine according to one of claims 1 through 3,
    characterized in that
    the worm casing (20) is connected with the ring sleeve (26) by means of a torque support (28).
  5. Straightening machine according to claim 1,
    characterized in that
    the worm wheel (40) is positioned with a clearance in front of the outer straightening plate (37) facing the free end of the aligning shaft (3) in the bushing body (12) of a clamping head (11) and interlocks on the one hand with the worm (39) mounted in the bushing body (12) and on the other hand by means of an internal thread (41) with an external thread (42) of the displacement bushing (44).
  6. Straightening machine according to one of claims 1 through 5,
    characterized in that
    the displacement bushing (44) or the axially movable straightening plates (7, 8 or 107, 108 respectively) is or are positioned on parallel key guideways (13, 14; 43) of the mounting bushing (5).
  7. Straightening machine according to one of claims 1 through 6,
    characterized in that
    the axially movable straightening plates (7, 8 or 107, 108 respectively) are clamped with a clamping head (11) against threaded rings (31, 32).
EP94110510A 1993-07-14 1994-07-06 Straightening machine for rolled profiles, especially H-profiles Expired - Lifetime EP0634235B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4323468A DE4323468A1 (en) 1993-07-14 1993-07-14 Straightening machine for rolled beams, especially H-beams
DE4323468 1993-07-14

Publications (2)

Publication Number Publication Date
EP0634235A1 EP0634235A1 (en) 1995-01-18
EP0634235B1 true EP0634235B1 (en) 1997-12-10

Family

ID=6492713

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94110510A Expired - Lifetime EP0634235B1 (en) 1993-07-14 1994-07-06 Straightening machine for rolled profiles, especially H-profiles

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EP (1) EP0634235B1 (en)
JP (1) JPH07144225A (en)
KR (1) KR100291164B1 (en)
CN (1) CN1057947C (en)
AT (1) ATE160956T1 (en)
DE (2) DE4323468A1 (en)
ES (1) ES2110658T3 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6823707B2 (en) 2002-04-04 2004-11-30 Abl Fabricators, Inc. Mobile flange press and method
CN100588476C (en) * 2006-12-25 2010-02-10 西安重型机械研究所 Tension mechanism for profiled bar pressure straightening device
CN101712045B (en) * 2009-12-15 2012-07-04 攀钢集团钢铁钒钛股份有限公司 Method for rolling H-shaped steel
CN104307932A (en) * 2014-11-11 2015-01-28 无锡恒富科技有限公司 Transmission mechanism of straightening machine pressure roller lifting component
CN104353704A (en) * 2014-11-11 2015-02-18 无锡恒富科技有限公司 Pressing wheel lifting mechanism of straightening machine
CN106825123B (en) * 2016-12-30 2018-09-21 无锡华联科技集团有限公司 The horizontal straightening machine of H profile steel
CN110449462B (en) * 2019-08-17 2020-10-09 河南中多铝镁新材有限公司 Finishing process for rolled section
CN112570479B (en) * 2020-11-11 2023-02-10 山东大业股份有限公司 Straightening device used before surface treatment of tire bead steel wire
DE102020215582A1 (en) 2020-12-09 2022-06-09 Sms Group Gmbh bending device
WO2023138888A1 (en) 2022-01-24 2023-07-27 Sms Group Gmbh Straightening machine and method for straightening a steel profile

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE431332C (en) * 1925-02-14 1926-07-05 Sack Gmbh Maschf Straightener with overhung rollers
DE3522976C2 (en) * 1985-06-27 1994-08-04 Schloemann Siemag Ag Process for straightening rolled stock
JPS62176604A (en) * 1986-01-30 1987-08-03 Nippon Steel Corp Roll width adjuster
US5060498A (en) * 1990-08-28 1991-10-29 Kawasaki Steel Corporation Section steel straightener with adjustable roller width

Also Published As

Publication number Publication date
DE59404764D1 (en) 1998-01-22
CN1100975A (en) 1995-04-05
KR100291164B1 (en) 2001-06-01
ATE160956T1 (en) 1997-12-15
ES2110658T3 (en) 1998-02-16
JPH07144225A (en) 1995-06-06
CN1057947C (en) 2000-11-01
DE4323468A1 (en) 1995-01-19
EP0634235A1 (en) 1995-01-18

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