EP0381919A2 - Forging machine for the continuous forging of strand material, in particular continuously cast slabs - Google Patents

Forging machine for the continuous forging of strand material, in particular continuously cast slabs Download PDF

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Publication number
EP0381919A2
EP0381919A2 EP89890322A EP89890322A EP0381919A2 EP 0381919 A2 EP0381919 A2 EP 0381919A2 EP 89890322 A EP89890322 A EP 89890322A EP 89890322 A EP89890322 A EP 89890322A EP 0381919 A2 EP0381919 A2 EP 0381919A2
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EP
European Patent Office
Prior art keywords
forging
eccentric
hammers
swing arm
forging machine
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.)
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EP89890322A
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German (de)
French (fr)
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EP0381919A3 (en
Inventor
Hans Dr. Hojas
Johann Braunwieser
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GFM Gesellschaft fuer Fertigungstechnik und Maschinenbau AG
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GFM Gesellschaft fuer Fertigungstechnik und Maschinenbau AG
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Publication of EP0381919A2 publication Critical patent/EP0381919A2/en
Publication of EP0381919A3 publication Critical patent/EP0381919A3/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J1/00—Preparing metal stock or similar ancillary operations prior, during or post forging, e.g. heating or cooling
    • B21J1/04—Shaping in the rough solely by forging or pressing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B15/0035—Forging or pressing devices as units
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J7/00—Hammers; Forging machines with hammers or die jaws acting by impact
    • B21J7/02—Special design or construction
    • B21J7/14—Forging machines working with several hammers

Definitions

  • the invention relates to a forging machine for continuous forging strand-shaped goods, in particular continuously cast slabs, with a pair of counter-cooperating forging hammers equipped with tools on the end face, which can be driven via eccentric shafts lying transversely to the direction of flow and also vibrate in the direction of travel in addition to the stroke movement.
  • Continuous casting plants which are becoming increasingly popular for supplying rolling mills, enable the continuous casting of slabs or the like.
  • Preproducts with a strand exit speed which is, however, considerably lower than the inlet speed of an economically operating rolling mill, so that direct rolling "on line" of the slab strand is practically impracticable.
  • the slab strand leaving the continuous caster must have a large cross-section in order to achieve appropriate casting performance, which requires a high reduction which can only be achieved with considerable effort in rolling mills.
  • the strand speed can be adapted to the running-in speed of a rolling mill due to the lengthening of the strand, and continuous feeding of the rolling mill with pre-products dimensioned to suit the roll can be achieved.
  • a forging machine for such a reduction in cross-section of the slab strand between the continuous casting plant and the rolling mill, which comprises several forging units arranged in series.
  • Each of the forging units works as a stretching or continuous forging machine with a pair of forging hammers which, in addition to the lifting movement, carries out an oscillating movement in the direction of the strand, thereby allowing the strand to be forged without obstructing the passage of the strand.
  • the known forging hammers are designed as connecting rods, which are seated on a drive eccentric at their end facing away from the tool and are guided in a specially supported rotary sliding guide in the end area on the tool side, so that one of the stroke movements occurs due to the rotation of the drive eccentric in cooperation with the rotary sliding guide overlapping oscillating movement results.
  • these connecting rod-type hammers with their guides that require lubrication require a high level of construction and construction effort and offer only a modest possibility of influencing lifting and oscillating movements and changing the oscillating behavior.
  • the invention is therefore based on the object to remedy these deficiencies and to provide a forging machine of the type described above, which is of particularly simple and robust construction and, particularly with regard to its hammering movement, can be adapted within wide limits to the most varied throughput speeds and forging conditions.
  • the invention solves this problem in that the forging hammers each have a swing arm which is radial to the eccentric shaft, preferably offset by 90 ° with respect to the hammer axis, the movement of which can be controlled by a guide provided in the region of its free end. There there is a separate swing arm for controlling the hammer movement, the hammers no longer need to be extended like a connecting rod and inserted in a connecting rod guide and ring bodies enclosing the eccentric shafts are sufficient, which not only results in small dimensions of the forging machine, but also a favorable balance of forces.
  • a suitable movement of the swing arm of the eccentric shaft-related hammer movement can overlap an additional movement lying in the direction of passage with extensive freedom, so that the swinging movement of the forging hammer can be adapted in terms of course and speed to the respective forging conditions and the choice of the swing arm, the hammer and the like given lever ratios ensures a simple and effective influence on the vibration behavior.
  • the relative position of the swing arm relative to the hammer axis is in itself of no importance for the actual movement control of the hammer and can be determined in accordance with the respective construction concepts of the forging machine. If the swing arm is offset by 90 ° to the hammer axis, it lies approximately in the direction of passage and can be accommodated particularly advantageously and in a space-saving manner.
  • the eccentric shafts of the forging hammers can be adjustably mounted in any suitable way and, of course, any other additional and auxiliary devices useful for eccentric-driven forging machines can also be considered here.
  • the swing arm on an eccentric drive forming the guide, or the like. articulated, whereby for precise guidance the swing arm can engage via a tab on the eccentric of the eccentric drive, there is a particular problem simple and elegant swing arm guide that can be perfectly matched to the eccentric shaft-driven hammer movement.
  • changing the sizes and relative positions of the eccentricities of the guide and hammer drive as well as the lever ratio in the link connection result in additional options for influencing the hammer movements.
  • the forging hammers together with their swing arms and their guides, are arranged between two parallel scaffolding plates that form an open forging frame, preferably the eccentric shafts of the forging hammers and / or optionally the eccentric drives for the swing arms, as known per se, eccentrically in Store the adjustable bushings inserted in the scaffolding plates so that they can rotate.
  • a fairly light, open and easily accessible forging stand is created, which is constructed similar to a rolling stand, in which the rollers are replaced by the eccentric driven forging hammers.
  • the two scaffolding plates allow the forging forces to be absorbed perfectly and offer the simplest storage conditions for the eccentric shafts, which are rationally seated in the adjustable sleeves for adjusting the stroke position.
  • Forging the slabs is primarily about reducing the thickness of the cross-section, so that mostly the scaffolding plates are provided as stand plates that accommodate horizontally extending eccentric shafts, with the open, seal-free hammer arrangement also making it possible to forge relatively elongated rectangular cross-sections without difficulty.
  • the eccentric shafts can, according to the invention, be stored standing in the scaffold plates provided in a lying position. so that both a slab thickness and a slab width deformation is possible without a significant change in the machine concept.
  • forging machines can also be combined with horizontal and standing eccentric shafts in order to be able to machine the entire slab cross-section.
  • a continuous forging machine 1 which has a pair of eccentrically driven, mutually cooperating forging hammers 2.
  • the forging hammers 2 carry forging tools 3 on their mutually facing end faces and are rotatably seated on the eccentric shafts 4 which lie transversely to the direction of passage and which are driven synchronously via a drive motor 5 and a gear transmission 6.
  • this swing arm guide By means of this swing arm guide, the lifting movement of the forging hammers 2 is superimposed with a swinging movement lying in the direction of passage, so that the forging tools 3 not only cause a deformation of the strand cross section, but also a strand feed when the strand S is forged.
  • the extent of this feed or the oscillating movement can be adjusted by mutually adjusting the eccentrics from the hammer drive on the one hand and from the swing arm guide on the other hand and by the lever ratios given due to the lengths of forging hammers, swing arms and brackets.
  • the eccentric shafts 4 for the hammer drive and the eccentric drives 9 for guiding the swing arm are mounted in two parallel scaffolding plates 10 which form an open forging stand similar to a rolling stand for receiving the forging hammers 2 together with their swinging arms 7 and their guides 8, 9.
  • the eccentric shafts 4 can, as indicated in FIG. 2 for the lower eccentric shaft, be mounted centrally in fixed bearing bushes 11 or, as indicated for the upper eccentric shaft, eccentrically in rotationally adjustable adjusting bushes 12, so that the adjustment drive 13 only indicated The stroke position of the forging hammers can be changed.
  • the scaffold plates 10 are arranged standing to accommodate horizontal eccentric shafts 4, so that the slab S is forged in thickness. If, on the other hand, the strand S is to be forged on the broad side, the scaffolding plates 10 can also be arranged horizontally to accommodate standing eccentric shafts, as a result of which the forging hammers with their forging tools act laterally on the strand S and undertake the desired width deformation.

Abstract

A forging machine (1) for the continuous forging of strand material, in particular continuously cast slabs (S), has a pair of opposed, cooperating forging hammers (2) which are equipped with tools on their front faces, can be driven via eccentric shafts (4) lying transversely to the feed direction and, in addition to the reciprocating motion, oscillate in the feed direction. In order to achieve a low-cost construction and in order to be able to influence the oscillation behaviour of the forging hammers (2) within wide limits, the forging hammers (2) each have a swing arm (7) which is radial to the eccentric shaft (4) and the motion of which can be controlled by a guide (9) provided in the region of its free end. <IMAGE>

Description

Die Erfindung bezieht sich auf eine Schmiedemaschine zum Durchlaufschmieden strangförmigen Gutes, insbesondere stranggegossener Brammen, mit einem Paar gegengleich zu­sammenwirkender, stirnseitig werkzeugbestückter Schmiede­hämmer, die über quer zur Durchlaufrichtung liegende Exzen­terwellen antreibbar sind und zusätzlich zur Hubbewegung in Durchlaufrichtung schwingen.The invention relates to a forging machine for continuous forging strand-shaped goods, in particular continuously cast slabs, with a pair of counter-cooperating forging hammers equipped with tools on the end face, which can be driven via eccentric shafts lying transversely to the direction of flow and also vibrate in the direction of travel in addition to the stroke movement.

Stranggießanlagen, die sich zur Belieferung von Walzwerken immer mehr durchsetzen, ermöglichen das kontinuierliche Gießen von Brammen od.dgl. Vorprodukten mit einer Strang-­Austrittsgeschwindigkeit, die allerdings beträchtlich ge­ringer ist als die Einlaufgeschwindigkeit eines wirtschaft­lich arbeitenden Walzwerkes, so daß ein Direktwalzen "On line" des Brammenstranges praktisch undurchführbar ist. Außerdem muß der die Stranggießanlage verlassende Brammen­strang zum Erreichen entsprechender Gießleistungen einen großen Querschnitt aufweisen, der eine hohe, in Walzwerken nur mit beträchtlichem Aufwand erreichbare Reduktion ver­langt. Kommt es nun schon vor dem Walzwerk zu einer be­stimmten Querschnittsreduktion, kann durch die auftretende Strangverlängerung die Stranggeschwindigkeit an die Einlauf­geschwindigkeit eines Walzwerkes angepaßt werden und es ist ein kontinuierliches Beschicken des Walzwerkes mit auch walzgerechter dimensionierten Vorprodukten erreichbar.Continuous casting plants, which are becoming increasingly popular for supplying rolling mills, enable the continuous casting of slabs or the like. Preproducts with a strand exit speed, which is, however, considerably lower than the inlet speed of an economically operating rolling mill, so that direct rolling "on line" of the slab strand is practically impracticable. In addition, the slab strand leaving the continuous caster must have a large cross-section in order to achieve appropriate casting performance, which requires a high reduction which can only be achieved with considerable effort in rolling mills. If there is already a certain reduction in cross-section in front of the rolling mill, the strand speed can be adapted to the running-in speed of a rolling mill due to the lengthening of the strand, and continuous feeding of the rolling mill with pre-products dimensioned to suit the roll can be achieved.

Wie aus der AT-PS 264.973 hervorgeht, ist es bereits be­kannt, für eine solche Querschnittsreduktion des Brammen­stranges zwischen Stranggießanlage und Walzwerk eine Schmie­demaschine einzusetzen, die mehrere hintereinander gereihte Schmiedeaggregate umfaßt. Jedes der Schmiedeaggregate arbei­tet als Streck- oder Durchlaufschmiedemaschine mit einem Schmiedehämmerpaar, das zusätzlich zur Hubbewegung eine in Strangrichtung liegende Schwingbewegung ausführt und dadurch ein Abschmieden des Stranges ohne Behinderung des Strangdurchlaufes erlaubt. Die bekannten Schmiedehämmer sind aber als Pleuelstangen ausgebildet, die an ihrem werkzeugabgewandten Ende auf einem Antriebsexzenter sitzen und im werkzeugseitigen Endbereich in einer speziell abge­stützten Dreh-Gleitführung geführt sind, so daß sich durch die Drehung des Antriebsexzenters im Zusammenwirken mit der Dreh-Gleitführung eine der Hubbewegung überlagernde Schwingbewegung ergibt. Diese pleuelartigen Hämmer mit ihren schmierungsbedürftigen Führungen verlangen jedoch einen hohen Bau- und Konstruktionsaufwand und bieten nur eine bescheidene Möglichkeit, Hub- und Schwingbewegungen zu beeinflussen und das Schwingverhalten zu verändern.As is apparent from AT-PS 264.973, it is already known to use a forging machine for such a reduction in cross-section of the slab strand between the continuous casting plant and the rolling mill, which comprises several forging units arranged in series. Each of the forging units works as a stretching or continuous forging machine with a pair of forging hammers which, in addition to the lifting movement, carries out an oscillating movement in the direction of the strand, thereby allowing the strand to be forged without obstructing the passage of the strand. However, the known forging hammers are designed as connecting rods, which are seated on a drive eccentric at their end facing away from the tool and are guided in a specially supported rotary sliding guide in the end area on the tool side, so that one of the stroke movements occurs due to the rotation of the drive eccentric in cooperation with the rotary sliding guide overlapping oscillating movement results. However, these connecting rod-type hammers with their guides that require lubrication require a high level of construction and construction effort and offer only a modest possibility of influencing lifting and oscillating movements and changing the oscillating behavior.

Der Erfindung liegt daher die Aufgabe zugrunde, diese Mängel zu beseitigen und eine Schmiedemaschine der eingangs ge­schilderten Art zu schaffen, die besonders einfach und robust aufgebaut ist und sich vor allem hinsichtlich ihrer Hämmerbewegung innerhalb weiter Grenzen an unterschied­lichste Durchlaufgeschwindigkeiten und Schmiedebedingungen anpassen läßt.The invention is therefore based on the object to remedy these deficiencies and to provide a forging machine of the type described above, which is of particularly simple and robust construction and, particularly with regard to its hammering movement, can be adapted within wide limits to the most varied throughput speeds and forging conditions.

Die Erfindung löst diese Aufgabe dadurch, daß die Schmiede­hämmer jeweils einen zur Exzenterwelle radialen, vorzugswei­se gegenüber der Hammerachse um 90° winkelversetzten Schwingarm aufweisen, dessen Bewegung durch eine im Bereich seines freien Endes vorgesehene Führung steuerbar ist. Da es zur Steuerung der Hammerbewegung einen eigenen Schwing­arm gibt, brauchen die Hämmer nicht mehr pleuelartig ver­längert und in einer Pleuelführung eingesetzt zu sein und es genügen ringförmig die Exzenterwellen umschließende Hammerkörper, wodurch sich nicht nur geringe Abmessungen der Schmiedemaschine, sondern auch günstige Kräftever­hältnisse ergeben. Außerdem kann vor allem durch eine geeignete Führung des Schwingarmes der exzenterwellenbe­dingten Hammerbewegung eine in Durchlaufrichtung liegende Zusatzbewegung mit weitgehender Freiheit überlagert werden, so daß die Schwingbewegung des Schmiedehammers in Verlauf und Geschwindigkeit wunschgemäß an die jeweiligen Schmiede­verhältnisse angepaßt werden können und die Wahl der durch den Schwingarm, den Hammer u.dgl. gegebenen Hebelüber­setzungen eine einfache und wirkungsvolle Beeinflussung des Schwingungsverhaltens gewährleistet. Die Relativlage des Schwingarmes gegenüber der Hammerachse ist für die eigentliche Bewegungssteuerung des Hammers an sich ohne Bedeutung und kann den jeweiligen Baukonzepten der Schmie­demaschine entsprechend bestimmt werden. Ist der Schwingarm um 90° zur Hammerachse winkelversetzt, liegt er annähernd in Durchlaufrichtung und läßt sich besonders vorteilhaft und platzsparend unterbringen. Um unterschiedliche Quer­schnitte abzuschmieden, den Werkzeugverschleiß auszugleichen oder auch ein Öffnen der Hämmer im Störungsfall zu errei­chen, können die Exzenterwellen der Schmiedehämmer auf jede geeignete Weise verstellbar gelagert sein und selbst­verständlich können auch hier beliebige andere für exzen­tergetriebene Schmiedemaschinen zweckmäßige Zusatz- und Hilfseinrichtungen berücksichtigt werden.The invention solves this problem in that the forging hammers each have a swing arm which is radial to the eccentric shaft, preferably offset by 90 ° with respect to the hammer axis, the movement of which can be controlled by a guide provided in the region of its free end. There there is a separate swing arm for controlling the hammer movement, the hammers no longer need to be extended like a connecting rod and inserted in a connecting rod guide and ring bodies enclosing the eccentric shafts are sufficient, which not only results in small dimensions of the forging machine, but also a favorable balance of forces. In addition, a suitable movement of the swing arm of the eccentric shaft-related hammer movement can overlap an additional movement lying in the direction of passage with extensive freedom, so that the swinging movement of the forging hammer can be adapted in terms of course and speed to the respective forging conditions and the choice of the swing arm, the hammer and the like given lever ratios ensures a simple and effective influence on the vibration behavior. The relative position of the swing arm relative to the hammer axis is in itself of no importance for the actual movement control of the hammer and can be determined in accordance with the respective construction concepts of the forging machine. If the swing arm is offset by 90 ° to the hammer axis, it lies approximately in the direction of passage and can be accommodated particularly advantageously and in a space-saving manner. In order to forge different cross-sections, to compensate for tool wear or to open the hammers in the event of a malfunction, the eccentric shafts of the forging hammers can be adjustably mounted in any suitable way and, of course, any other additional and auxiliary devices useful for eccentric-driven forging machines can also be considered here.

Ist erfindungsgemäß der Schwingarm an einem die Führung bildenden Exzentertrieb, od.dgl. angelenkt, wobei zur exakten Führung der Schwingarm über eine Lasche am Exzenter des Exzentertriebes angreifen kann, kommt es zu einer besonders einfachen und eleganten Schwingarmführung, die sich bestens auf die exzenterwellengetriebene Hammerbewegung abstimmen läßt. Außerdem ergeben sich durch eine Änderung der Größen und Relativlagen der Exzentrizitäten von Führung und Hammer­antrieb sowie durch die in der Laschenverbindung liegende Hebelübersetzung zusätzliche Möglichkeiten zur beeinflussung der Hammerbewegungen.According to the invention, the swing arm on an eccentric drive forming the guide, or the like. articulated, whereby for precise guidance the swing arm can engage via a tab on the eccentric of the eccentric drive, there is a particular problem simple and elegant swing arm guide that can be perfectly matched to the eccentric shaft-driven hammer movement. In addition, changing the sizes and relative positions of the eccentricities of the guide and hammer drive as well as the lever ratio in the link connection result in additional options for influencing the hammer movements.

Nach einer besonders vorteilhaften Ausgestaltung der Er­findung sind die Schmiedehämmer samt ihren Schwingarmen und deren Führungen zwischen zwei parallelen, ein offenes Schmiedegerüst bildenden Gerüstplatten angeordnet, wobei vorzugsweise die Exzenterwellen der Schmiedehämmer und/oder gegebenenfalls der Exzentertriebe für die Schwingarme, wie an sich bekannt, exzentrisch in drehverstellbar in den Gerüstplatten eingesetzten Verstellbüchsen lagern. Statt des bisher üblichen schweren, geschlossenen und unzugäng­lichen Schmiedekastens entsteht ein recht leichtes, offenes und gut zugängliches Schmiedegerüst, das ähnlich einem Walzgerüst aufgebaut ist, bei dem die Walzen durch die exzentergetriebenen Schmiedehämmer ersetzt sind. Die bei­den Gerüstplatten erlauben die einwandfreie Aufnahme der Schmiedekräfte und bieten einfachste Lagerbedingungen für die Exzenterwellen, die zur Hublagenverstellung rationell in drehverstellbaren Verstellbüchsen sitzen.According to a particularly advantageous embodiment of the invention, the forging hammers, together with their swing arms and their guides, are arranged between two parallel scaffolding plates that form an open forging frame, preferably the eccentric shafts of the forging hammers and / or optionally the eccentric drives for the swing arms, as known per se, eccentrically in Store the adjustable bushings inserted in the scaffolding plates so that they can rotate. Instead of the usual heavy, closed and inaccessible forging box, a fairly light, open and easily accessible forging stand is created, which is constructed similar to a rolling stand, in which the rollers are replaced by the eccentric driven forging hammers. The two scaffolding plates allow the forging forces to be absorbed perfectly and offer the simplest storage conditions for the eccentric shafts, which are rationally seated in the adjustable sleeves for adjusting the stroke position.

Beim Abschmieden der Brammen geht es vor allem um die Dik­kenreduzierung des Querschnittes, so daß meist die Gerüst­platten als Ständerplatten vorgesehen sind, die horizontal verlaufende Exzenterwellen aufnehmen, wobei durch die offene, dichtungsfreie Hämmeranordnung auch verhältnismäßig langgestreckte Rechtecksquerschnitte schwierigkeitslos abzuschmieden sind. Sollen die Brammen der Breite nach verformt werden, können erfindungsgemäß die Exzenterwel­len stehend in liegend vorgesehenen Gerüstplatten lagern, so daß ohne wesentliche Änderung des Maschinenkonzeptes sowohl eine Brammendicken- als auch eine Brammenbreitenver­formung möglich ist. Selbstverständlich lassen sich dann auch Schmiedemaschinen mit liegenden und stehenden Exzen­terwellen kombinieren, um den gesamten Brammenquerschnitt bearbeiten zu können.Forging the slabs is primarily about reducing the thickness of the cross-section, so that mostly the scaffolding plates are provided as stand plates that accommodate horizontally extending eccentric shafts, with the open, seal-free hammer arrangement also making it possible to forge relatively elongated rectangular cross-sections without difficulty. If the slabs are to be deformed in width, the eccentric shafts can, according to the invention, be stored standing in the scaffold plates provided in a lying position. so that both a slab thickness and a slab width deformation is possible without a significant change in the machine concept. Of course, forging machines can also be combined with horizontal and standing eccentric shafts in order to be able to machine the entire slab cross-section.

In der Zeichnung ist der Erfindungsgegenstand anhand eines Ausführungsbeispieles rein schematisch veranschaulicht, und zwar zeigen

  • Fig. 1 und 2 eine erfindungsgemäße Schmiedemaschine im Längsschnitt bzw. im Querschnitt.
In the drawing, the subject matter of the invention is illustrated purely schematically using an exemplary embodiment, namely show
  • 1 and 2 a forging machine according to the invention in longitudinal section and in cross section.

Um stranggegossene Brammen direkt im Anschluß an eine Stranggießanlage noch in der Gießhitze abschmieden zu können, gibt es eine Durchlaufschmiedemaschine 1, die ein Paar exzentergetriebene, gegengleich zusammenwirkende Schmiedehämmer 2 aufweist. Die Schmiedehämmer 2 tragen an ihren einander zugekehrten Stirnseiten Schmiedewerk­zeuge 3 und sitzen drehbar auf den quer zur Durchlauf­richtung liegenden Exzenterwellen 4, die über einen An­triebsmotor 5 und ein Zahnradgetriebe 6 synchron angetrieben werden. Ein zur Exzenterwelle 4 radialer, gegenüber der Hammerachse um 90° winkelversetzter Schwingarm 7 der Schmie­dehämmer 2 dient dabei jeweils zur Steuerung der Hammerbe­wegung, welche Schwingarme an ihren freien Enden über La­schen 8 an die Schwingarmführung bildenden Exzentertrieben 9 angelenkt sind. Durch diese Schwingarmführung wird der Hubbewegung der Schmiedehämmer 2 eine in Durchlaufrichtung liegende Schwingbewegung überlagert, so daß die Schmiede­werkzeuge 3 beim Abschmieden des Stranges S nicht nur eine Verformung des Strangquerschnittes, sondern auch einen Strangvorschub bewirken. Das Maß dieses Vorschubes bzw. der Schwingbewegung läßt sich durch das gegenseitige Abstimmen der Exzenter vom Hammerantrieb einerseits und von der Schwingarmführung anderseits sowie durch die aufgrund der Längen von Schmiedehämmern, Schwingarmen und Laschen gegebenen Hebelübersetzungen beeinflussen.In order to be able to forge continuously cast slabs directly after a continuous caster in the casting heat, there is a continuous forging machine 1 which has a pair of eccentrically driven, mutually cooperating forging hammers 2. The forging hammers 2 carry forging tools 3 on their mutually facing end faces and are rotatably seated on the eccentric shafts 4 which lie transversely to the direction of passage and which are driven synchronously via a drive motor 5 and a gear transmission 6. A swing arm 7 of the forging hammers 2, which is radial to the eccentric shaft 4 and is offset by 90 ° with respect to the hammer axis, serves to control the hammer movement, which swing arms are articulated at their free ends via lugs 8 to the eccentric drives 9 forming the swing arm guide. By means of this swing arm guide, the lifting movement of the forging hammers 2 is superimposed with a swinging movement lying in the direction of passage, so that the forging tools 3 not only cause a deformation of the strand cross section, but also a strand feed when the strand S is forged. The extent of this feed or the oscillating movement can be adjusted by mutually adjusting the eccentrics from the hammer drive on the one hand and from the swing arm guide on the other hand and by the lever ratios given due to the lengths of forging hammers, swing arms and brackets.

Die Exzenterwellen 4 for den Hammerantrieb sowie die Ex­zentertriebe 9 zur Schwingarmführung sind in zwei parallelen Gerüstplatten 10 gelagert, die ein offenes, einem Walzgerüst ähnliches Schmiedegerüst zur Aufnahme der Schmiedehämmer 2 samt ihren Schwingarmen 7 und deren Führungen 8, 9 bilden. Die Exzenterwellen 4 können dabei, wie in Fig. 2 für die untere Exzenterwelle angedeutet, zentrisch in fest einge­setzten Lagerbüchsen 11 oder, wie for die obere Exzenter­welle angedeutet, exzentrisch in drehverstellbar eingesetz­ten Verstellbüchsen 12 gelagert sein, so daß über einen nur angedeuteten Verstelltrieb 13 die Hublage der Schmiede­hämmer verändert werden kann.The eccentric shafts 4 for the hammer drive and the eccentric drives 9 for guiding the swing arm are mounted in two parallel scaffolding plates 10 which form an open forging stand similar to a rolling stand for receiving the forging hammers 2 together with their swinging arms 7 and their guides 8, 9. The eccentric shafts 4 can, as indicated in FIG. 2 for the lower eccentric shaft, be mounted centrally in fixed bearing bushes 11 or, as indicated for the upper eccentric shaft, eccentrically in rotationally adjustable adjusting bushes 12, so that the adjustment drive 13 only indicated The stroke position of the forging hammers can be changed.

Im dargestellten Ausführungsbeispiel sind die Gerüst­platten 10 stehend zur Aufnahme horizontaler Exzenterwel­len 4 angeordnet, so daß der Brammenstrang S der Dicke nach abgeschmiedet wird. Soll hingegen der Strang S breit­seits abgeschmiedet werden, lassen sich die Gerüstplatten 10 ohne weiteres auch liegend zur Aufnahme stehender Ex­zenterwellen anordnen, wodurch die Schmiedehämmer mit ihren Schmiedewerkzeugen seitlich auf den Strang S einwirken und die gewünschte Breitenverformung vornehmen.In the illustrated embodiment, the scaffold plates 10 are arranged standing to accommodate horizontal eccentric shafts 4, so that the slab S is forged in thickness. If, on the other hand, the strand S is to be forged on the broad side, the scaffolding plates 10 can also be arranged horizontally to accommodate standing eccentric shafts, as a result of which the forging hammers with their forging tools act laterally on the strand S and undertake the desired width deformation.

Claims (5)

1. Schmiedemaschine(1) zum Durchlaufschmieden strangför­migen Gutes, insbesondere stranggegossener Brammen (S), mit einem Paar gegengleich zusammenwirkende, stirnseitig werk­zeugbestückte Schmiedehämmer(2), die über quer zur Durchlauf­richtung liegende Exzenterwellen (4) antreibbar sind und zusätz­lich zur Hubbewegung in Durchlaufrichtung schwingen, dadurch gekennzeichnet, daß die Schmiedehämmer (2) jeweils einen zur Exzenterwelle (4) radialen, vorzugsweise gegenüber der Hammerachse um 90° winkelversetzten Schwingarm (7) aufweisen, dessen Bewegung durch eine im Bereich seines freien Endes vorgesehene Führung (9) steuerbar ist.1.Forging machine (1) for continuous forging of strand-like material, in particular continuously cast slabs (S), with a pair of counteracting forging hammers (2) equipped with tooling on the end face, which can be driven via eccentric shafts (4) lying transversely to the direction of flow and also swing in the direction of travel in addition to the stroke movement , characterized in that the forging hammers (2) each have a swing arm (7) radial to the eccentric shaft (4), preferably offset by 90 ° with respect to the hammer axis, the movement of which can be controlled by a guide (9) provided in the region of its free end. 2. Schmiedemaschine nach Anspruch 1, dadurch gekenn­zeichnet, daß der Schwingarm (7) an einem die Führung bil­denden Exzentertrieb (9) od.dgl. angelenkt ist.2. Forging machine according to claim 1, characterized in that the swing arm (7) or the like on a guide forming eccentric drive (9). is articulated. 3. Schmiedemaschine nach Anspruch 2, dadurch gekenn­zeichnet, daß der Schwingarm (7) über eine Lasche (9) am Exzenter des Exzentertriebes (9) angreift.3. Forging machine according to claim 2, characterized in that the swing arm (7) engages via a tab (9) on the eccentric of the eccentric drive (9). 4. Schmiedemaschine nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Schmiedehämmer (2) samt ihren Schwingarmen (7) und deren Führungen (8, 9) zwischen zwei parallelen, ein offenes Schmiedegerüst bildenden Ge­rüstplatten (10) angeordnet sind, wobei vorzugsweise die Exzenterwellen (4) der Schmiedehämmer (2) und/oder ge­gebenenfalls der Exzentertriebe (9) für die Schwingarme (7), wie an sich bekannt, exzentrisch in drehverstellbar in den Gerüstplatten (10) eingesetzten Veerstellbüchsen (12) lagern.4. Forging machine according to one of claims 1 to 3, characterized in that the forging hammers (2) together with their swing arms (7) and their guides (8, 9) are arranged between two parallel, an open forging scaffolding plates (10), wherein preferably the eccentric shafts (4) of the forging hammers (2) and / or possibly the eccentric drives (9) for the swing arms (7), as is known per se, can be rotated eccentrically store the adjustable bushings (12) in the scaffolding plates (10). 5. Schmiedemaschine nach Anspruch 4, dadurch gekenn­zeichnet, daß die Exzenterwellen stehend in liegend vorgesehenen Gerüstplatten lagern.5. Forging machine according to claim 4, characterized in that the eccentric shafts are stored standing in the scaffolding plates provided lying down.
EP19890890322 1989-02-07 1989-12-18 Forging machine for the continuous forging of strand material, in particular continuously cast slabs Withdrawn EP0381919A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT24589A AT390902B (en) 1989-02-07 1989-02-07 FORGING MACHINE FOR CONTINUOUSLY FORGING CONTINUOUS GOODS, IN PARTICULAR CONTINUOUSLY MOLDED SLABS
AT245/89 1989-02-07

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EP0381919A2 true EP0381919A2 (en) 1990-08-16
EP0381919A3 EP0381919A3 (en) 1991-03-20

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EP (1) EP0381919A3 (en)
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AT (1) AT390902B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1473094A2 (en) * 1997-09-16 2004-11-03 Ishikawajima-Harima Heavy Industries Co., Ltd. Plate reduction press apparatus and methods
US7163522B1 (en) 1994-03-02 2007-01-16 Scimed Life Systems, Inc. Block copolymer elastomer catheter balloons
CN100525942C (en) 1997-09-16 2009-08-12 石川岛播磨重工业株式会社 Plate thickness pressing device and method
US7618696B2 (en) 1994-03-02 2009-11-17 Boston Scientific Scimed, Inc. Block copolymer elastomer catheter balloons
CN113020514A (en) * 2021-03-02 2021-06-25 哈尔滨工业大学（威海） Deep blind hole shell pulse current auxiliary local upsetting continuous forming method and device

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Publication number Priority date Publication date Assignee Title
GB731110A (en) * 1952-04-10 1955-06-01 Kocks Gmbh Friedrich Improvements relating to forging and reducing apparatus
DE1627624A1 (en) * 1967-12-27 1971-02-11 Schloemann Ag Deformation caliber for deformation tools working discontinuously over time
FR2213818A1 (en) * 1973-01-12 1974-08-09 Ribback Bernd

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Publication number Priority date Publication date Assignee Title
AT264973B (en) * 1966-05-23 1968-09-25 Ges Fertigungstechnik & Maschb Device for stretch forging strand-shaped goods

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB731110A (en) * 1952-04-10 1955-06-01 Kocks Gmbh Friedrich Improvements relating to forging and reducing apparatus
DE1627624A1 (en) * 1967-12-27 1971-02-11 Schloemann Ag Deformation caliber for deformation tools working discontinuously over time
FR2213818A1 (en) * 1973-01-12 1974-08-09 Ribback Bernd

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7163522B1 (en) 1994-03-02 2007-01-16 Scimed Life Systems, Inc. Block copolymer elastomer catheter balloons
US7618696B2 (en) 1994-03-02 2009-11-17 Boston Scientific Scimed, Inc. Block copolymer elastomer catheter balloons
EP1473094A2 (en) * 1997-09-16 2004-11-03 Ishikawajima-Harima Heavy Industries Co., Ltd. Plate reduction press apparatus and methods
EP1473094A3 (en) * 1997-09-16 2004-12-15 Ishikawajima-Harima Heavy Industries Co., Ltd. Plate reduction press apparatus and methods
EP1676650A1 (en) * 1997-09-16 2006-07-05 Ishikawajima-Harima Heavy Industries Co., Ltd. Plate reduction press apparatus and methods
CN100525942C (en) 1997-09-16 2009-08-12 石川岛播磨重工业株式会社 Plate thickness pressing device and method
CN113020514A (en) * 2021-03-02 2021-06-25 哈尔滨工业大学（威海） Deep blind hole shell pulse current auxiliary local upsetting continuous forming method and device

Also Published As

Publication number Publication date
ATA24589A (en) 1990-01-15
EP0381919A3 (en) 1991-03-20
JPH02247003A (en) 1990-10-02
AT390902B (en) 1990-07-25

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