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EP0286875B1 - Series of grooved rolls for rolling steel bars and roll stand hereto - Google Patents

Series of grooved rolls for rolling steel bars and roll stand hereto Download PDF

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Publication number
EP0286875B1
EP0286875B1 EP88104622A EP88104622A EP0286875B1 EP 0286875 B1 EP0286875 B1 EP 0286875B1 EP 88104622 A EP88104622 A EP 88104622A EP 88104622 A EP88104622 A EP 88104622A EP 0286875 B1 EP0286875 B1 EP 0286875B1
Authority
EP
European Patent Office
Prior art keywords
roll
rolls
diameter
rolling
roll stand
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 - Lifetime
Application number
EP88104622A
Other languages
German (de)
French (fr)
Other versions
EP0286875A2 (en
EP0286875A3 (en
Inventor
Hugo Dr. Feldmann
Claus Schlanzke
Hans Heinrich Hartmann
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
Original Assignee
SMS Schloemann Siemag AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by SMS Schloemann Siemag AG filed Critical SMS Schloemann Siemag AG
Priority to AT88104622T priority Critical patent/ATE64699T1/en
Publication of EP0286875A2 publication Critical patent/EP0286875A2/en
Publication of EP0286875A3 publication Critical patent/EP0286875A3/en
Application granted granted Critical
Publication of EP0286875B1 publication Critical patent/EP0286875B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • 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
    • B21B13/005—Cantilevered roll stands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B21B27/02—Shape or construction of rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/16—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section
    • 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
    • B21B2013/006—Multiple strand rolling mills; Mill stands with multiple caliber rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/02—Rolling stand frames or housings; Roll mountings ; Roll chocks
    • B21B2031/023—Transverse shifting one housing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/02—Rolling stand frames or housings; Roll mountings ; Roll chocks
    • B21B2031/026—Transverse shifting the stand
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B21B27/02—Shape or construction of rolls
    • B21B27/03—Sleeved rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/02—Rolling stand frames or housings; Roll mountings ; Roll chocks
    • B21B31/06—Fastening stands or frames to foundation, e.g. to the sole plate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/16—Adjusting or positioning rolls
    • B21B31/18—Adjusting or positioning rolls by moving rolls axially
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/16—Adjusting or positioning rolls
    • B21B31/20—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis
    • B21B31/22—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis mechanically, e.g. by thrust blocks, inserts for removal
    • B21B31/26—Adjusting eccentrically-mounted roll bearings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B35/00—Drives for metal-rolling mills, e.g. hydraulic drives
    • B21B35/14—Couplings, driving spindles, or spindle carriers specially adapted for, or specially arranged in, metal-rolling mills
    • B21B35/142—Yielding spindle couplings; Universal joints for spindles
    • B21B35/145—Hooke's joints or the like with each coupling part pivoted with respect to an intermediate member

Definitions

  • the invention relates to a caliber roll set for rolling steel bars in a roll stand provided with an adjusting device for the built-in rolls.
  • the rolls for profile rolling have always had the same roll bale diameter, the length of the roll bales being exploited in that the corresponding caliber cuts are provided for the different profiles.
  • Each roll profile is therefore assigned the same roll diameter, which depends on the engagement conditions in the roll gap based on the thickest profile.
  • the so-called pressed length in the retracting roll gap which is dependent on the stitch decrease, should be so large that the incoming rolling stock is drawn into the roll gap, i.e. the rollers "bite".
  • the design of the roller diameter according to the thickest profile has the disadvantage that the roller diameter for lighter profiles is larger than an ideal engagement ratio requires. Furthermore, the proportion of width when rolling with rolls that are too thick increases compared to the stretching, so that the loss deformation increases and light profiles are rolled in an uneconomical manner.
  • the invention has for its object to provide a roll set for rolling steel bars with profiled rolls, in which each of the different rolled profiles can be rolled at least approximately under ideal rolling conditions.
  • the solution to this problem consists of the features of claim 1.
  • Step rollers of this type according to the invention are installed in the roll stand in such a way that in the axial central position of the roll bales the smallest roll diameter is opposite the largest roll diameter of the other roll. All that is then required is a relative axial displacement of the parts of each roller bearing the caliber incisions and a change in the center distance of the rollers in order to bring caliber incisions into a complementary operative position.
  • a configuration of the rolls with gradually increasing diameters can also be realized if the roll parts provided with caliber cuts have a frustoconical configuration.
  • This has the advantage that an axial displacement of at least one roller can be accompanied by a corresponding correction of the center distance of the rollers by actuating the adjusting device, but this results in the disadvantage that the conical diameter regions of the rollers which have collided on either side of the complementary caliber incisions due to the Taper unequal diameter and thus receive different axial circumferential speeds, which can lead to wear.
  • the rollers can be formed in one piece, which, because of the large axial adjustment paths that are necessary, makes it seem expedient to insert the roller journals in axially immovable chocks.
  • the roll parts provided with caliber incisions consist of sleeves which are axially displaceable on continuous shafts and rotatably connected or braced to the shafts.
  • roller parts provided with caliber incisions are axially oppositely displaceable, so that the rolling line remains constant and the roller table entry and exit roller tables do not have to be shifted to the side and height.
  • the maintenance of the rolling line also has another aspect:
  • the invention provides, provided that a fixed rolling line is provided, that the diameter range of each roller associated with the caliber incisions positioned on the complementary active position can be supported by adjustable support rollers.
  • roller journals or the continuous shafts can then be chosen so small in the interest of a clear diameter gradation that they can transmit the roller torque within the permissible torsional stresses.
  • a drive via the support rollers is also conceivable, so that the diameter of the roller journals or of the continuous shafts can also be selected independently of torsional stresses.
  • An advantageous clear diameter gradation of the profile rolls according to the invention can also be obtained without regard to the diameter of the roll neck by means of a roll stand in which the stepped rolls are mounted and driven in mirror image overhung in two drive housings, with at least one roll being radially adjustable and at least the other roll being axial is displaceable, and wherein the drive housing assigned to the upper roller has a recess in the axial direction of the lower roller, which allows the entry of smaller diameter areas of the lower roller when rolling the thickest profile.
  • This type of stand is for wire rolling stands, i.e. for rolls without diameter gradation, known in principle.
  • adjustable adjusting wedges can also be provided between the inclined sole plates and the drive housings (claim 8).
  • FIGS. 1 to 3 the configuration of parts of the rolls which are provided with stepwise increasing diameter areas and carry caliber incisions, reference is made to FIGS. 1 to 3.
  • the rolls 1, 2 shown here are in one piece and have roll bales provided with caliber cuts a, b and c.
  • the diameter incision a of the upper roller 1 is assigned a diameter range I with the smallest diameter Da, which is appropriate for the lightest of the rolled profiles.
  • a circular caliber c is cut into the next diameter region III with the largest diameter Dc in the exemplary embodiment.
  • the increasing diameter gradation from Da to Dc described does not need to be linear, rather what is decisive is which rolling profile in which diameter range should be rolled.
  • the diameter of the diameter ranges is then selected taking into account the favorable engagement conditions which depend on the rolled profile and the pass reduction.
  • the lower roller 2 is of identical design, only reversed in such a way that the largest diameter range III lies on the left instead of on the right, i.e. with the mean relative axial position of the two rolls 1 and 2 in FIG. 1 compared to the diameter range I of the upper roll 1. If the axial distance WAb is set in this axial position of the rolls 1, 2, the caliber incisions b of both roll parts complement each other to form the square roll profile B.
  • the diameter ranges II with their cylindrical surfaces lie opposite one another and have collided with one another during rolling in closed calibres.
  • the cylindrical surfaces of the diameter ranges I and III are expediently slightly ground so that the surfaces opposite in FIG. 1 do not touch due to their inevitably different peripheral speeds.
  • Fig. 3 the caliber incisions a for rolling the lightest rolled profile A are positioned in a supplementary active position.
  • This setting shows the already mentioned problem of the clear gradation in diameter and the thickness of the roll journals 1a and 2a.
  • the shaft or journal diameter DW would have to be dimensioned so small that the largest diameter range III does not touch a roll neck or a shaft end, because the center distance WAa is minimal when rolling the lightest rolled profile A.
  • these considerations led to the aforementioned concept of the four-high section roll stand (not shown) with preferably driven backup rolls.
  • Fig. 4 shows the frustoconical configuration of the rollers 11, 12 carrying roller incisions in the axial position according to Fig. 1 for the rolling of the middle rolled profile B.
  • the axial displacement indicated by the arrows and the adjustment of the rollers for setting the operative positions according to Figs. 2 and 3 can be in this "stepless" gradation of diameters can be done fairly simultaneously.
  • the roll stand shown schematically in FIG. 5 comprises two drive housings 3 and 4, in which the stepped rolls 1, 2 are mounted in mirror image according to the invention.
  • the axial position of the two rollers is adjusted to the rolling of the thickest profile c, the smaller diameter ranges I, II (FIG. 1) of the lower roller 2 having entered a recess 5 in the drive housing 3.
  • the drive housings 3 and 4 are displaceably guided on common, inclined sole plates 6, 7 and can be clamped thereon by means of clamping devices 8, 9, which are shown in simplified form.
  • the upper roller 1 can be adjusted radially by means of eccentric bushes, not shown, in that a worm gear mechanism (not shown) of a geared motor 10 serves to rotate the eccentric bushes.
  • the rolling line can be retained via the opposite axial displacement of the rolls 1, 2.
  • the upper roller 1 has to be temporarily lifted or ventilated by means of the eccentric adjustment, not shown, so that the cylindrical roller bale surfaces come past one another on both sides of the caliber incisions during the axial displacement on an inclined plane.
  • the dash-dotted lines 3 'and 4' the axial position of the drive housing 3 and 4 is indicated, which they take for rolling the smallest profile according to Fig. 3.
  • the upper roller 1 is driven directly via a variable-length joint spindle 16 from a comb roller stand, not shown.
  • Another variable-length joint spindle 17 extends through the drive housing 3 and drives a gearwheel 18 shown in dashed lines in the drive housing 4, which meshes with a gearwheel 19 of the lower roller 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Metal Rolling (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)

Abstract

For rolling steel bars with grooved rolls 1,2, the rolls are provided with gradually increasing diameter zones I,II,III for pass incisions a,b,c in zones of equal diameter on each roll. Since the rolls can be operated in a mirror-inverted fashion and can be brought into a mutually complementary working position by a relative axial displacement and a screw-down movement, each rolled section can be allocated the roll-barrel diameter which brings ideal rolling conditions. <IMAGE>

Description

Die Erfindung betrifft einen Kaliberwalzensatz zum Walzen von Stabstahl in einem mit einer Anstellvorrichtung für die eingebauten Walzen versehenen Walzgerüst. Die Walzen für Profilwalzung haben bisher stets den gleichen Walzballendurchmesser, wobei die Länge der Walzballen dadurch ausgenutzt ist, daß für die verschiedenen Profile die entsprechenden Kalibereinschnitte vorgesehen werden. Jedem Walzprofil ist also ein gleicher Walzendurchmesser zugeordnet, der sich mit Rücksicht auf die Eingriffsverhältnisse im Walzspalt nach dem dicksten Profil richtet. Nach der Ekelund'schen Formel soll nämlich die von der Stichabnahme abhängige sogenannte gedrückte Länge im einziehenden Walzspalt so groß sein, daß das einlaufende Walzgut in den Walzspalt eingezogen wird, d.h. die Walzen "beißen". Die Auslegung der Walzendurchmesser nach dem dicksten Profil hat jedoch den Nachteil, daß der Walzendurchmesser für leichtere Profile größer ist, als es ein ideales Eingriffsverhältnis erfordert. Weiterhin nimmt der Breitungsanteil beim Walzen mit zu dicken Walzen gegenüber der Streckung zu, so daß die Verlustverformung zunimmt und leichte Profile unwirtschaftlich gewalzt werden.The invention relates to a caliber roll set for rolling steel bars in a roll stand provided with an adjusting device for the built-in rolls. Up to now, the rolls for profile rolling have always had the same roll bale diameter, the length of the roll bales being exploited in that the corresponding caliber cuts are provided for the different profiles. Each roll profile is therefore assigned the same roll diameter, which depends on the engagement conditions in the roll gap based on the thickest profile. According to Ekelund's formula, the so-called pressed length in the retracting roll gap, which is dependent on the stitch decrease, should be so large that the incoming rolling stock is drawn into the roll gap, i.e. the rollers "bite". However, the design of the roller diameter according to the thickest profile has the disadvantage that the roller diameter for lighter profiles is larger than an ideal engagement ratio requires. Furthermore, the proportion of width when rolling with rolls that are too thick increases compared to the stretching, so that the loss deformation increases and light profiles are rolled in an uneconomical manner.

Der Erfindung liegt die Aufgabe zugrunde, einen Walzensatz zum Walzen von Stabstahl mit profilierten Walzen zu schaffen, bei dem jeder der unterschiedlichen Walzprofile zumindest annähernd unter idealen Walzverhältnissen gewalzt werden kann. Die Lösung dieser Aufgabe besteht aus den Merkmalen des Patentanspruches 1.The invention has for its object to provide a roll set for rolling steel bars with profiled rolls, in which each of the different rolled profiles can be rolled at least approximately under ideal rolling conditions. The solution to this problem consists of the features of claim 1.

Durch die Gestaltung der Walzen mit stufenweise ansteigenden Durchmesserbereichen wird der Weg eröffnet, für jedes Walzprofil annähernd den "richtigen" Walzendurchmesser vorzugeben. Derartige Stufenwalzen gemäß der Erfindung werden in das Walzgerüst so eingebaut, daß in der axialen Mittellage der Walzballen dem jeweils kleinsten Walzendurchmesser der größte Walzendurchmesser der anderen Walze gegenüberliegt. Es bedarf dann lediglich einer relativen Axialverschiebung der die Kalibereinschnitte tragenden Teile einer jeden Walze sowie einer Veränderung des Achsabstandes der Walzen, um Kalibereinschnitte in sich ergänzende Wirklage zu bringen.The design of the rolls with gradually increasing diameter ranges opens the way to prescribe approximately the "correct" roll diameter for each roll profile. Step rollers of this type according to the invention are installed in the roll stand in such a way that in the axial central position of the roll bales the smallest roll diameter is opposite the largest roll diameter of the other roll. All that is then required is a relative axial displacement of the parts of each roller bearing the caliber incisions and a change in the center distance of the rollers in order to bring caliber incisions into a complementary operative position.

Eine Konfiguration der Walzen mit stufenweise ansteigenden Durchmessern kann auch verwirklicht werden, wenn die mit Kalibereinschnitten versehenen Walzenteile eine kegelstumpfförmige Konfiguration haben. Dies hat den Vorteil, daß eine Axialverschiebung zumindest einer Walze begleitet sein kann von einer entsprechenden Korrektur des Achsabstandes der Walzen durch Betätigen der Anstellvorrichtung, jedoch ergibt sich hierbei der Nachteil, daß die aufeinandergefahrenen konischen Durchmesserbereiche der Walzen zu beiden Seiten der sich ergänzenden Kalibereinschnitte aufgrund der Konizität ungleiche Durchmesser und somit axial unterschiedliche Umfangsgeschwindigkeiten erhalten, was zu Verschleiß führen kann.A configuration of the rolls with gradually increasing diameters can also be realized if the roll parts provided with caliber cuts have a frustoconical configuration. This has the advantage that an axial displacement of at least one roller can be accompanied by a corresponding correction of the center distance of the rollers by actuating the adjusting device, but this results in the disadvantage that the conical diameter regions of the rollers which have collided on either side of the complementary caliber incisions due to the Taper unequal diameter and thus receive different axial circumferential speeds, which can lead to wear.

Die Walzen können _ wie bekannt _ einstückig ausgebildet sein, was wegen der notwendig großen Axial-Verstellwege es zweckmäßig erscheinen läßt, die Walzenzapfen in axial unbeweglichen Einbaustücken verschieblich einzusetzen. Dies ist nicht erforderlich, wenn gemäß der weiteren Erfindung die mit Kalibereinschnitten versehenen Walzenteile aus Hülsen bestehen, die auf durchgehenden Wellen axial verschieblich und mit den Wellen drehfest verbunden oder verspannbar sind.As known, the rollers can be formed in one piece, which, because of the large axial adjustment paths that are necessary, makes it seem expedient to insert the roller journals in axially immovable chocks. This is not necessary if according to the further Invention, the roll parts provided with caliber incisions consist of sleeves which are axially displaceable on continuous shafts and rotatably connected or braced to the shafts.

Es ist zweckmäßig, daß die mit Kalibereinschnitten versehenen Walzenteile axial gegenläufig verschiebbar sind, so daß die Walzlinie konstant bleibt und die ein- und auslaufseitigen Rollgänge des Walzgerüstes nicht nach Seite und Höhe verlagert werden müssen.It is expedient that the roller parts provided with caliber incisions are axially oppositely displaceable, so that the rolling line remains constant and the roller table entry and exit roller tables do not have to be shifted to the side and height.

Die Beibehaltung der Walzlinie hat auch noch einen anderen Aspekt:The maintenance of the rolling line also has another aspect:

Wenn die Axiallage der Walzen auf das Walzen des leichtesten Profiles eingestellt sind und somit den kleinsten Achsabstand haben, dürfen die Durchmesserbereiche mit dem größten Durchmesser nicht an den Walzenzapfen anstoßen. Um jedoch den Grundgedanken der Erfindung voll zu nutzen, ist es erwünscht, die Durchmesserstufen nicht zu klein zu wählen. Dies führt dann dazu, daß die Walzenzapfen im Durchmesser so klein werden, daß sich die Walzen aufbiegen und geschlossene Kaliber sich öffnen. Um dies unter allen Umständen zu vermeiden, sieht die Erfindung unter der Voraussetzung einer feststehenden Walzlinie vor, daß der den auf sich ergänzende Wirklage positionierten Kalibereinschnitten zugeordnete Durchmesserbereich jeder Walze durch anstellbare Stützwalzen abstützbar ist. Die Walzenzapfen bzw. die durchgehenden Wellen können dann im Interesse einer deutlichen Durchmesserabstufung im Durchmesser so klein gewählt werden, daß sie gerade das Walzen-Drehmoment im Rahmen zulässiger Torsionsspannungen übertragen können. Es ist jedoch auch ein Antrieb über die Stützwalzen denkbar, so daß der Durchmesser der Walzenzapfen bzw. der durchgehenden Wellen auch unabhängig von Torsionsspannungen gewählt werden kann.If the axial position of the rolls is set to the rolling of the lightest profile and thus have the smallest center distance, the diameter areas with the largest diameter must not touch the roll neck. However, in order to make full use of the basic idea of the invention, it is desirable not to choose the diameter steps too small. This then leads to the fact that the roller journals become so small in diameter that the rollers bend open and closed calibers open. In order to avoid this in all circumstances, the invention provides, provided that a fixed rolling line is provided, that the diameter range of each roller associated with the caliber incisions positioned on the complementary active position can be supported by adjustable support rollers. The roller journals or the continuous shafts can then be chosen so small in the interest of a clear diameter gradation that they can transmit the roller torque within the permissible torsional stresses. However, a drive via the support rollers is also conceivable, so that the diameter of the roller journals or of the continuous shafts can also be selected independently of torsional stresses.

Eine vorteilhafte deutliche Durchmesser-Abstufung der erfindungsgemäßen Profilwalzen kann ohne Rücksicht auf den Durchmesser der Walzenzapfen auch mittels eines Walzgerüstes erhalten werden, in dem die Stufenwalzen in zwei Antriebsgehäusen spiegelbildlich fliegend gelagert und angetrieben sind, wobei mindestens eine Walze radial anstellbar und mindestens die andere Walze axial verschiebbar ist, und wobei das der oberen Walze zugeordnete Antriebsgehäuse in Achsrichtung der unteren Walze eine Ausnehmung hat, die den Eintritt von kleineren Durchmesserbereichen der unteren Walze beim Walzen des dicksten Profils erlaubt. Diese Gerüstbauart ist für Drahtwalzgerüste, d.h. für Walzen ohne Durchmesser-Abstufung, im Prinzip bekannt.An advantageous clear diameter gradation of the profile rolls according to the invention can also be obtained without regard to the diameter of the roll neck by means of a roll stand in which the stepped rolls are mounted and driven in mirror image overhung in two drive housings, with at least one roll being radially adjustable and at least the other roll being axial is displaceable, and wherein the drive housing assigned to the upper roller has a recess in the axial direction of the lower roller, which allows the entry of smaller diameter areas of the lower roller when rolling the thickest profile. This type of stand is for wire rolling stands, i.e. for rolls without diameter gradation, known in principle.

Um mit einer Axialverschiebung eines Antriebsgehäuses zugleich den Abstand der Stufenwalzen entsprechend dem Durchmessersprung beim Profilwechsel zu ändern, empfiehlt es sich, ein oder beide Antriebsgehäuse auf geneigten Sohlplatten zu verschieben und festzuklemmen (Patentansprüche 6 und 7). Eine gegenläufige Axialverschiebung der Walzen führt dabei zur Erhaltung der Walzlinie.In order to simultaneously change the distance of the stepped rollers in accordance with the jump in diameter when changing the profile with an axial displacement of a drive housing, it is advisable to move and clamp one or both drive housings on inclined base plates (claims 6 and 7). An opposite axial displacement of the rolls leads to the maintenance of the rolling line.

Statt einer Exzenter-Anstellung für die eine Walze, über die wegen der Durchmesser-Abstufungen der erfindungsgemäßen Walzen die Walzen vor einer relativen Axialverschiebung radial vorübergehend gelüftet werden können, können auch verstellbare Anstellkeile zwischen den geneigten Sohlplatten und den Antriebsgehäusen vorgesehen sein (Patentanspruch 8).Instead of an eccentric adjustment for the one roller, via which the rollers can be temporarily released radially before a relative axial displacement due to the diameter gradations of the rollers according to the invention, adjustable adjusting wedges can also be provided between the inclined sole plates and the drive housings (claim 8).

In der Zeichnung sind einige Ausführungsbeispiele der Erfindung dargestellt, und zwar zeigen:

  • Fig. 1 einen Walzensatz mit stufenweise ansteigenden Durchmesserbereichen zum Walzen von drei unterschiedlichen Profilen in der mittleren Axiallage,
  • Fig. 2 den Walzensatz nach Fig. 1 in einer gegenläufig verschobenen Axiallage zum Walzen des dicksten Profils,
  • Fig. 3 den Walzensatz nach Fig. 1 in einer gegenläufig verschobenen Axiallage zum Walzen des dünnsten Profils,
  • Fig. 4 einen Walzensatz entsprechend Fig. 1 mit kegelstumpfförmiger Konfiguration der mit Kalibereinschnitten versehenen Walzen, und
  • Fig. 5 die schematische Darstellung eines Walzgerüstes mit fliegend gelagerten und gegenläufig axial verschiebbaren Kaliberwalzen.
Some exemplary embodiments of the invention are shown in the drawing, namely:
  • 1 is a set of rolls with gradually increasing diameter ranges for rolling three different profiles in the central axial position,
  • 2 shows the roller set according to FIG. 1 in an oppositely displaced axial position for rolling the thickest profile,
  • 3 shows the roller set according to FIG. 1 in an oppositely displaced axial position for rolling the thinnest profile,
  • Fig. 4 is a set of rollers corresponding to Fig. 1 with a frustoconical configuration of the rollers provided with caliber cuts, and
  • Fig. 5 is a schematic representation of a roll stand with overhung and axially displaceable caliber rolls.

Um das Wesentliche der Erfindung, die Konfiguration von mit stufenweise ansteigenden Durchmesserbereichen versehenen, Kalibereinschnitte tragenden Teilen der Walzen näher zu erläutern, wird auf Fig. 1 bis 3 verwiesen. Die hier dargestellten Walzen 1, 2 sind einstückig und haben mit Kalibereinschnitten a, b und c versehene Walzballen. Dem Kalibereinschnitt a der oberen Walze 1 ist ein Durchmesserbereich I mit dem kleinsten Durchmesser Da zugeordnet, der für das leichteste der Walzprofile angemessen ist. Es folgt nach rechts ein Durchmesserbereich II mit einem Durchmessersprung auf Db, in den das Kaliber b für ein schwereres Walzprofil B eingeschnitten ist. Zum Walzen des schwersten Walzprofiles D ist in den nächsten Durchmesserbereich III mit dem größten Durchmesser Dc im Ausführungsbeispiel ein Rundkaliber c eingeschnitten. Die beschriebene zunehmende Durchmesser-Abstufung von Da bis Dc braucht nicht linear zu sein, vielmehr ist entscheidend, welches Walzprofil in welchem Durchmesserbereich gewalzt werden soll. Hiernach wird unter Berücksichtigung der vom Walzprofil und der Stichabnahme abhängigen günstigen Eingriffsverhältnisse der Durchmesser der Durchmesserbereiche gewählt.In order to explain in more detail the essence of the invention, the configuration of parts of the rolls which are provided with stepwise increasing diameter areas and carry caliber incisions, reference is made to FIGS. 1 to 3. The rolls 1, 2 shown here are in one piece and have roll bales provided with caliber cuts a, b and c. The diameter incision a of the upper roller 1 is assigned a diameter range I with the smallest diameter Da, which is appropriate for the lightest of the rolled profiles. To the right there follows a diameter range II with a jump in diameter to Db, into which the caliber b is cut for a heavier rolled profile B. To roll the heaviest rolled section D, a circular caliber c is cut into the next diameter region III with the largest diameter Dc in the exemplary embodiment. The increasing diameter gradation from Da to Dc described does not need to be linear, rather what is decisive is which rolling profile in which diameter range should be rolled. The diameter of the diameter ranges is then selected taking into account the favorable engagement conditions which depend on the rolled profile and the pass reduction.

Die untere Walze 2 ist identisch gestaltet, lediglich derart spiegelbildlich umgekehrt eingesetzt, daß der im Durchmesser größte Durchmesserbereich III links statt rechts liegt, d.h. bei der mittleren relativen Axiallage der beiden Walzen 1 und 2 in Fig. 1 gegenüber dem Durchmesserbereich I der oberen Walze 1. Wenn bei dieser Axiallage der Walzen 1, 2 der Achsabstand WAb eingestellt ist, ergänzen sich die Kalibereinschnitte b beider Walzenteile zu dem quadratischen Walzprofil B. Die Durchmesserbereiche II mit ihren zylindrischen Flächen liegen sich gegenüber und sind beim Walzen in geschlossenen Kalibern aufeinandergefahren. Die zylindrischen Flächen der Durchmesserbereiche I und III sind zweckmäßig soweit geringfügig abgeschliffen, daß sich die in Fig. 1 gegenüberliegenden Flächen wegen ihrer zwangläufig unterschiedlichen Umfangsgeschwindigkeiten nicht berühren.The lower roller 2 is of identical design, only reversed in such a way that the largest diameter range III lies on the left instead of on the right, i.e. with the mean relative axial position of the two rolls 1 and 2 in FIG. 1 compared to the diameter range I of the upper roll 1. If the axial distance WAb is set in this axial position of the rolls 1, 2, the caliber incisions b of both roll parts complement each other to form the square roll profile B. The diameter ranges II with their cylindrical surfaces lie opposite one another and have collided with one another during rolling in closed calibres. The cylindrical surfaces of the diameter ranges I and III are expediently slightly ground so that the surfaces opposite in FIG. 1 do not touch due to their inevitably different peripheral speeds.

In Fig. 2 ist die obere Walze 1 nach links und die untere Walze 2 nach rechts soweit axial verschoben, daß sich die Kalibereinschnitte c für das schwerste Walzprofil C in Wirklage ergänzen. Vor der Axialverschiebung mußten die Walzen durch Betätigen der Anstellvorrichtungen des Walzgerüstes weit genug auseinandergefahren werden, um dann den Achsabstand WAc einzustellen, unter dem die zylindrischen Flächen beiderseits der Kalibereinschnitte c aufeinandergefahren sind.In Fig. 2, the upper roller 1 is shifted to the left and the lower roller 2 to the right axially so far that the caliber incisions c complement each other for the heaviest roll profile C in active position. Before the axial displacement, the rolls had to be moved far enough apart by actuating the adjusting devices of the roll stand, in order then to set the center distance WAc, under which the cylindrical surfaces on both sides of the caliber incisions c moved together.

In Fig. 3 sind die Kalibereinschnitte a zum Walzen des leichtesten Walzprofils A in ergänzende Wirklage positioniert. An dieser Einstellung wird das schon erwähnte Problem der deutlichen Durchmesserabstufung und der Dicke der Walzenzapfen 1a und 2a deutlich. Soll nämlich in konsequenter Ausnutzung des Erfindungsgedankens eine deutliche Durchmesser-Abstufung zwischen den Durchmesserbereichen I für das leichteste und III für das schwerste Walzprofil (A bzw. C) vorgesehen werden, müßte der Wellen-oder Zapfendurchmesser DW so klein bemessen werden, daß der größte Durchmesserbereich III einen Walzenzapfen oder ein Wellenende nicht berührt, denn der Achsabsabstand WAa ist beim Walzen des leichtesten Walzprofils A minimal. Nicht zuletzt diese Überlegungen führten zu dem vorerwähnten Konzept des Quarto-Profilwalzgerüstes (nicht dargestellt) mit vorzugsweise angetriebenen Stützwalzen.In Fig. 3 the caliber incisions a for rolling the lightest rolled profile A are positioned in a supplementary active position. This setting shows the already mentioned problem of the clear gradation in diameter and the thickness of the roll journals 1a and 2a. If a clear diameter gradation between the diameter ranges I for the lightest and III for the heaviest rolled profile (A or C) is to be provided in consistent use of the inventive idea, the shaft or journal diameter DW would have to be dimensioned so small that the largest diameter range III does not touch a roll neck or a shaft end, because the center distance WAa is minimal when rolling the lightest rolled profile A. Last but not least, these considerations led to the aforementioned concept of the four-high section roll stand (not shown) with preferably driven backup rolls.

Fig. 4 zeigt die kegelstumpfförmige Konfiguration der Walzeneinschnitte tragenden Walzen 11, 12 in der Axiallage nach Fig. 1 für das Walzen des mittleren Walzprofils B. Die durch Pfeile angedeuteten Axialverschiebung und Anstellung der Walzen zur Einstellung der Wirklagen nach Fig. 2 und 3 können bei dieser "stufenlosen" Durchmesserabstufung ziemlich gleichzeitig erfolgen.Fig. 4 shows the frustoconical configuration of the rollers 11, 12 carrying roller incisions in the axial position according to Fig. 1 for the rolling of the middle rolled profile B. The axial displacement indicated by the arrows and the adjustment of the rollers for setting the operative positions according to Figs. 2 and 3 can be in this "stepless" gradation of diameters can be done fairly simultaneously.

Das in Fig. 5 schematisch dargestellte Walzgerüst umfaßt zwei Antriebsgehäuse 3 und 4, in denen die Stufenwalzen 1,2 gemäß der Erfindung spiegelbildlich gelagert sind. Die beiden Walzen sind in ihrer Axiallage auf das Walzen des dicksten Profils c eingestellt, wobei die kleineren Durchmesserbereiche I, II (Fig. 1) der unteren Walze 2 in eine Ausnehmung 5 des Antriebsgehäuses 3 eingetreten sind.The roll stand shown schematically in FIG. 5 comprises two drive housings 3 and 4, in which the stepped rolls 1, 2 are mounted in mirror image according to the invention. The axial position of the two rollers is adjusted to the rolling of the thickest profile c, the smaller diameter ranges I, II (FIG. 1) of the lower roller 2 having entered a recess 5 in the drive housing 3.

Die Antriebsgehäuse 3 und 4 sind im Ausführungsbeispiel auf gemeinsamen, geneigten Sohlplatten 6, 7 verschieblich geführt und an diesen mittels vereinfacht dargestellter Klemmvorrichtungen 8, 9 festklemmbar. In dem Antriebsgehäuse 3 ist die obere Walze 1 mittels nicht dargestellter Exzenterbüchsen radial anstellbar, indem von einem Getriebemotor 10 ein nicht dargestelltes Schneckenradgetriebe zum Drehen der Exzenterbüchsen dient.In the exemplary embodiment, the drive housings 3 and 4 are displaceably guided on common, inclined sole plates 6, 7 and can be clamped thereon by means of clamping devices 8, 9, which are shown in simplified form. In the drive housing 3, the upper roller 1 can be adjusted radially by means of eccentric bushes, not shown, in that a worm gear mechanism (not shown) of a geared motor 10 serves to rotate the eccentric bushes.

Zum gegenläufigen axialen Verschieben der Antriebsgehäuse 3, 4 und damit der Stufenwalze 1, 2 dienen im Ausführungsbeispiel ortsfeste hydraulische Stellmotore 13, 14, die von dem Unterbau 15 für die geneigten Sohlplatten 6, 7 getragen sind. Über die gegenläufige Axialverschiebung der Walzen 1, 2 kann die Walzlinie erhalten bleiben. Vor jeder Axialverschiebung der Walzen ist mit Rücksicht auf die Durchmesserabstufungen die obere Walze 1 mittels der nicht dargestellten Exzenteranstellung soweit vorübergehend anzuheben bzw. zu lüften, daß die zylindrischen Walzballen-Flächen beiderseits der Kalibereinschnitte bei der Axialverschiebung auf geneigter Ebene aneinander vorbeikommen. Durch die strichpunktierten Linienzüge 3′ und 4′ ist die Axiallage der Antriebsgehäuse 3 und 4 angedeutet, die diese zum Walzen des kleinsten Profils nach Fig. 3 einnehmen.In the exemplary embodiment, stationary hydraulic servomotors 13, 14, which are carried by the substructure 15 for the inclined sole plates 6, 7, serve for the opposite axial displacement of the drive housing 3, 4 and thus the stepped roller 1, 2. The rolling line can be retained via the opposite axial displacement of the rolls 1, 2. Before each axial displacement of the rollers, the upper roller 1 has to be temporarily lifted or ventilated by means of the eccentric adjustment, not shown, so that the cylindrical roller bale surfaces come past one another on both sides of the caliber incisions during the axial displacement on an inclined plane. Through the dash-dotted lines 3 'and 4', the axial position of the drive housing 3 and 4 is indicated, which they take for rolling the smallest profile according to Fig. 3.

Der Antrieb der oberen Walze 1 erfolgt unmittelbar über eine längenveränderliche Gelenkspindel 16 von einem nicht dargestellten Kammwalzengerüst. Eine weitere längenveränderliche Gelenkspindel 17 durchgreift das Antriebsgehäuse 3 und treibt ein gestrichelt dargestelltes Zahnrad 18 in dem Antriebsgehäuse 4 an, das mit einem Zahnrad 19 der unteren Walze 2 kämmt.The upper roller 1 is driven directly via a variable-length joint spindle 16 from a comb roller stand, not shown. Another variable-length joint spindle 17 extends through the drive housing 3 and drives a gearwheel 18 shown in dashed lines in the drive housing 4, which meshes with a gearwheel 19 of the lower roller 2.

Claims (8)

1. Grooved roll set for the rolling of rod steel in a roll stand provided with a screw-down device for the rolls, characterised thereby, that the rolls (1, 2 or 11, 12) provided with groove recesses (a, b, c) have a configuration with diameter regions (I, II, III) rising in steps, that corresponding grooves are cut into roll-wise equal diameter regions and that the rolls are arranged reversed in mirror image so that corresponding groove recesses are bringable into complementary operative position by a relative axial displacement and screwing-down of the rolls.
2. Roll set according to claim 1, characterised thereby, that the rolls (11, 12) provided with groove recesses have a frusto-conical configuration.
3. Roll set according to claim 1, characterised thereby, that the rolls provided with groove recesses consist of roll sleeves which are displaceable axially on continuous shafts and connected secure against rotation or tightenable together with the shafts.
4. Roll stand with a roll set according to claim 1, characterised thereby, that the rolls are displaceable axially in opposite sense and that diameter region of each roll, which is associated with the groove recesses positioned into augmenting operative position, is supported by outer backing rolls capable of being screwed down.
5. Roll stand with a roll set according to claim 1, characterised thereby, that the rolls (1, 2) are borne overhung in mirror image in two drive housings (3, 4) and driven, that at least one roll (1) is capable of being screwed down radially and at least the other roll (2) is displaceable axially and that the drive housing (3) associated with the upper roll (1) has a recess (5), which is in axial direction of the lower roll (2) and permits the entry of smaller diameter regions (I, II) of the lower roll during the rolling of the thickest profile (C).
6. Roll stand according to claim 5, characterised thereby, that at least one axially displaceable drive housing (4) is guided on inclined bedplates (6) and firmly clampable to those and that the roll (1) borne in the other drive housing (1) is capable of being screwed down by way of eccentric bushings.
7. Roll stand according to claim 6, characterised thereby, that both drive housings (3, 4) are guided on bedplates (6, 7), which are inclined in like sense and firmly clampable to these by way of clamping devices (8, 9).
8. Roll stand according to claim 5, characterised thereby, that both drive housings are guided to be displaceable axially in opposite sense on bed-plates, which are inclined in like sense, and firmly clampable to these by way of clamping devices and that screw-down wedges, which are adjustable when the clamping devices are released, are arranged between the bedplates and the drive housings.
EP88104622A 1987-04-11 1988-03-23 Series of grooved rolls for rolling steel bars and roll stand hereto Expired - Lifetime EP0286875B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88104622T ATE64699T1 (en) 1987-04-11 1988-03-23 GAUGE ROLLER SET FOR ROLLING BAR STEEL AND ROLLING ROLLING STAND HERE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873712332 DE3712332A1 (en) 1987-04-11 1987-04-11 CALIBER ROLLING SET FOR ROLLING STEEL AND ROLLING MILLS HERE
DE3712332 1987-04-11

Publications (3)

Publication Number Publication Date
EP0286875A2 EP0286875A2 (en) 1988-10-19
EP0286875A3 EP0286875A3 (en) 1989-04-19
EP0286875B1 true EP0286875B1 (en) 1991-06-26

Family

ID=6325433

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88104622A Expired - Lifetime EP0286875B1 (en) 1987-04-11 1988-03-23 Series of grooved rolls for rolling steel bars and roll stand hereto

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EP (1) EP0286875B1 (en)
JP (1) JPS63264205A (en)
KR (1) KR880012281A (en)
CN (1) CN88102216A (en)
AT (1) ATE64699T1 (en)
DE (2) DE3712332A1 (en)

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JPH0810424Y2 (en) * 1990-03-05 1996-03-29 大同特殊鋼株式会社 Rolling roll
JP2566081B2 (en) * 1990-12-19 1996-12-25 エイ・ティ・アンド・ティ・コーポレーション Optical packet encoding method and switching node
CN108244698A (en) * 2016-12-29 2018-07-06 贵州中烟工业有限责任公司 Cut paper length regulating method, device and the feed system of cigarette making and tipping machine cork paper
CN107042233B (en) * 2017-06-21 2019-12-27 华北理工大学 Steel rolling forming equipment
CN107470371A (en) * 2017-09-26 2017-12-15 德清广汇金属材料有限公司 Prick head machine
CN108213075B (en) * 2018-02-08 2019-10-18 中海宏祥铜业江苏有限公司 A kind of Copper rod rolling mill
CN108421827A (en) * 2018-04-07 2018-08-21 新疆八钢铁股份有限公司 A kind of splitting rolling pass
CN112388723A (en) * 2020-11-20 2021-02-23 广州锐锋智能机械有限公司 Die cutting device with step type bottom roller
CN114210732B (en) * 2022-02-21 2022-05-17 山西太钢不锈钢精密带钢有限公司 Precision control method for ultra-flat ultra-thin precise strip steel roller system of backlight plate
CN115582546B (en) * 2022-09-13 2024-08-02 江西兆驰半导体有限公司 Preparation device and preparation method of gold particles

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Publication number Priority date Publication date Assignee Title
DE490185C (en) * 1930-01-27 Arthur Otto Roll especially for caliber mills
DE599645C (en) * 1933-04-22 1934-07-13 Hans Cramer Dr Ing Caliber rolling mill
DE3417500A1 (en) * 1984-05-11 1985-11-14 SMS Schloemann-Siemag AG, 4000 Düsseldorf Two-high reversing roll stand, in particular for rolling steel sections

Also Published As

Publication number Publication date
EP0286875A2 (en) 1988-10-19
JPS63264205A (en) 1988-11-01
KR880012281A (en) 1988-11-26
ATE64699T1 (en) 1991-07-15
DE3712332A1 (en) 1988-10-20
EP0286875A3 (en) 1989-04-19
CN88102216A (en) 1988-11-09
DE3863384D1 (en) 1991-08-01

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