EP2012943B1 - Bending device for two working rolls of a rolling stand - Google Patents
Bending device for two working rolls of a rolling stand Download PDFInfo
- Publication number
- EP2012943B1 EP2012943B1 EP07723869A EP07723869A EP2012943B1 EP 2012943 B1 EP2012943 B1 EP 2012943B1 EP 07723869 A EP07723869 A EP 07723869A EP 07723869 A EP07723869 A EP 07723869A EP 2012943 B1 EP2012943 B1 EP 2012943B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure
- guide block
- wearing plate
- self
- bending device
- 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.)
- Not-in-force
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B29/00—Counter-pressure devices acting on rolls to inhibit deflection of same under load, e.g. backing rolls ; Roll bending devices, e.g. hydraulic actuators acting on roll shaft ends
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2269/00—Roll bending or shifting
- B21B2269/02—Roll bending; vertical bending of rolls
- B21B2269/04—Work roll bending
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2269/00—Roll bending or shifting
- B21B2269/12—Axial shifting the rolls
- B21B2269/14—Work 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
- B21B31/16—Adjusting or positioning rolls
- B21B31/18—Adjusting or positioning rolls by moving rolls axially
Definitions
- the invention relates to a bending device for two work rolls of a roll stand provided in lateral roll stands guide blocks for two vertically adjustable pressure transmission body, on which the work rolls are supported on chocks, and arranged in pairs between the pressure transmission bodies bending cylinders, which acts on a pressure transmitting body piston rod and one of each having other pressure transmitting body formed or held cylinder, wherein the pressure transmitting body are slidably supported on the respective guide block.
- Bending devices for axially displaceable work rolls of a rolling stand of this type are for example from EP 0 256 408 A2 and the DE 199 38 217 A1 already known.
- the work rolls receiving chocks are supported via a respective arranged in the middle height range sliding surface on a guide paragraph of paired pressure transmission bodies.
- the pressure transfer bodies With a bending cylinder acting between the pressure transfer bodies arranged in pairs, the pressure transfer bodies are vertically displaceable relative to one another.
- guide blocks form lateral guide webs, which are encompassed by the pressure transmission bodies.
- Guide blocks and guide webs are fully occupied in the support areas with wear plates that form sliding surfaces.
- a bending apparatus for work rolls of a rolling stand comprising two paired, L-shaped pressure transmitting bodies between which a bending cylinder for generating roll bending forces is effective.
- the pressure transmission body are supported vertically supported in a guide block, wherein the guide block is fully occupied in the contact areas with the pressure transmission bodies with wear plates forming sliding surfaces.
- the invention is therefore based on the object, a bending device for the work rolls of a rolling mill of the type described above in such a way that transversely to the plane of movement of the pressure transmission body acting reaction forces due to tilting of the pressure transmission body can be derived free of edge pressure in the guide block.
- the invention solves this problem by the fact that the pressure transmitting body are slidably supported by self-adjusting wear plates on the respective guide block and the self-adjusting wear plates have a flat sliding surface and a cylindrical or spherical shaped support surface.
- the flat sliding surface of the wear plate slidably abuts a guide surface of the pressure transmitting body and the cylindrical or spherical shaped support surface of the wear plate is pivotally supported on a correspondingly formed cylindrical or spherical counter support surface of the guide block.
- the areal extent of the sliding surface of the wear plates is selected so that the maximum occurring surface pressure, assuming a uniformly distributed tilting force on the entire sliding surface, about half, preferably one third, does not exceed the permissible surface pressure. The higher this calculated maximum surface pressure with unchanged material pairing, the lower will be the expected service life.
- Both the sliding surface and the support surface of each self-adjusting wear plate is associated with at least one outlet opening of a lubricant supply line, these outlet openings preferably opening respectively into the sliding surface and the support surface.
- the leadership of the lubricant supply line to the respective wear plate through the guide block is required.
- lubricant supply lines are such that the sliding surface and the support surface of the self-adjusting wear plate is assigned at least one outlet opening of a common lubricant supply line, wherein the lubricant supply line passes through the wear plate between the support surface and the sliding surface for securing a uniform lubricant distribution are incorporated in the sliding surface and the support surface of the wear plates lubricant channels.
- the distance between the wear plates on the vertically arranged leg of the pressure transmission body is selected so that during operation of the bending block never exposed lubricant channels.
- the preferred embodiment of the wear plate is equipped with a cylindrical support surface.
- This cylindrical support surface which forms a circular arc in a cross section, is assigned a radius center on a longitudinal axis of the wear plate.
- the storage, and if necessary an additional attachment of the wear plate is carried out on a likewise cylindrically shaped mating support surface on the guide block.
- the radius centers of the cylindrical support surface of the wear plate and the cylindrical counter support surface of the guide block are preferably both on a common longitudinal axis, whereby a (small) rotational movement about this longitudinal axis is made possible.
- This longitudinal axis is preferably outside of the wear plate.
- the longitudinal axis is aligned normal to the axes of rotation of the work rolls. The rotational movement is on the order of about 1/10 °.
- a spherical support of Schl thoroughlyplatte with a spherical cap-shaped support surface is particularly useful when tilting movements of the pressure transmitting body in a second normal planes or with considerable deformation of the guide block is to be expected, especially if they reach an order of magnitude, in the small plastic deformations on niksegment- cylindrical Schl practiceologyn occur.
- the wear plate is fixed with a pivoting movement of the wear plate relative to the guide block allowing fastener in which the counter support surface receiving guide block.
- This fastener may be formed by a sunken in the flat sliding surface of the wear plate screw which, however, only a loose positioning of the wear plate and in no case their positional fixation aims.
- a spreading element abutting or acting on the wear plate and on the guide block is arranged in a recess.
- this expansion element is formed by a leaf spring, with which a spreading force between the wear plate and the guide block is generated, so that the contact between the wear plate and the pressure transmission body is always maintained.
- the pressure transmitters cooperating in pairs are L-shaped with a longer vertical and a shorter horizontal leg and the legs of the pressure transmission bodies lie opposite one another in pairs in a plane parallel to the work rolls. All vertical support surfaces of the pressure transmitting body, which are arranged in to the work rolls receiving plane vertical normal planes are exclusively self-adjusting Wear plates fitted.
- the horizontal and the vertical leg can also have the same length.
- rotatable about driven axes 1 working rolls 1 a rolling stand not shown in the end mounted in chocks 2, which can be adjusted vertically in the window of the lateral roll stand 3, on the one hand to adjust a predetermined strip thickness and on the other hand via the vertical adjustment of the bending curve of the work rolls 1, in particular in connection with an axial displacement of the work rolls relative to the support rollers, not shown here.
- the influencing of the bending curve of the work rolls 1 takes place with the aid of a bending device, which consists essentially of paired pressure transfer bodies 4a, 4b, between which bending cylinders 5 are arranged.
- the pairs arranged on both sides of the chocks 2 Pressure transfer body 4a, 4b are vertically slidably mounted in a respective guide block 6 in itself in their vertical orientation self-adjusting wear plates 7 or on vertical guides 7a.
- the guide blocks 6 are laterally fixed in windows of the roll stand 3 and form two parallel vertical guides 7a for the pressure transmission body 4a, 4b, which have an L-shape with a longer vertical leg 8 and a shorter horizontal leg 9.
- the arrangement is made such that the legs 8 and 9 of the pressure transmitting body 4a and 4b are in pairs opposite each other, as in FIG. 1 can be seen.
- the legs 8 and 9 of the pressure transmitting body 4a and 4b are provided with a rectangular or square cross section and are substantially in a common, parallel to the axes of rotation 1a of the work rolls 1 working roll plane center plane.
- the cylinders 10 of the bending cylinder 5 can therefore be formed in a simple manner by the vertical legs 8 of the two pressure transmission bodies 4a, 4b.
- the provided with a piston 11 piston rod 12 of the bending cylinder 5 passes through a cylinder cover 13 and engages in a receiving recess 14 in the horizontal leg 9 of the other pressure transmitting body 4b and 4a, respectively.
- the tension-resistant anchoring of the piston rod 12 in the receiving recess 14 is effected by a locking pin 16 which engages perpendicularly to the piston rod 12 to transfer the bending forces used in the receiving recess 14.
- the pairs arranged and the pressure transmitting bodies 4a and 4b associated with two bending cylinder 5 lie in a common plane, the image plane of the FIG. 1 corresponds, in a horizontal distance from each other and generate when they are pressurized in this plane due to the possible eccentric bending force introduction a tilting moment, wherein the pairwise acting tilting forces on the self-adjusting wear plates 7 in the guide block 6 and the roll stand 3 are derived.
- the FIG. 2 There is only a very small unequal surface load on the vertical guides 7a due to reaction forces, which are derived via the pressure transfer body 4a and 4b on the guide block 6.
- both the in FIG. 2 shown full-surface vertical guides 7a and the in FIG. 1 shown self-adjusting wear plates 7 are used.
- a self-adjusting wear plate 7 is arranged.
- Fig. 3 shows the self-adjusting wear plate 7, which bears flat with a flat sliding surface 17 on a vertical guide surface 18 of the pressure transmission body 4a and is pivotally supported by a cylindrical shaped support surface 19 on a mating support surface 20 of the guide block 6 about a radius center 21.
- the sliding surface 17 of the self-adjusting wear plate 7 is square or rectangular and the support surface 19 is formed by a portion of a circular cylindrical surface.
- a lubricating pocket 22 is incorporated, from which sufficient lubrication for the adjustment movement of the wear plate on the vertical guide surface 18 of the pressure transmission body 4a is ensured.
- a fastener 23 shown as a screw the wear plate 7 is fixed without affecting the operationally desired rotary motion on the guide block 6, but an easier installation and removal of the pressure transmission body is made possible.
- FIG. 3 allows in the selected representation, a further geometric embodiment of the self-adjusting wear plate.
- the wear plate 7 is provided with a spherical support surface 19, which is part of a spherical surface which is pivotally supported on a likewise spherically shaped mating support surface 20 of the guide block 6 about a radius center in two normal directions and thus ensures the flat concerns the sliding surface of Schlauerplafte spatially.
- the flat sliding surface 17 of the self-adjusting wear plate is preferably circular in this case.
- FIGS. 4a to 4d show further advantageous structural configurations of the wear plate, especially for their intensive lubrication.
- Lubricant supply lines 25 are, as in the FIGS. 1 and 2 shown, incorporated in the guide block 6 in the form of holes and open, starting from a central lubricant supply unit or easily accessible grease nipple in the mating support surfaces 20 of the guide blocks 6. These lubricant supply lines 25 then enforce the Schl possessplatte 7 and connect the cylindrical support surface 19th with the flat sliding surface 17.
- Fig. 4a are shown starting from the outlet openings of two lubricant supply lines 25 in the sliding surface 17 incorporated lubricant channels 26 which extend like a lattice on the sliding surface 17 and thus ensure a uniform supply of lubricant to the entire sliding surface.
- the lubricant channels open into conical lubricating pockets 22, which in a groove-shaped Pass recess 27.
- the recess 27 receives a spreading element 28 designed as a leaf spring (FIG. Fig. 4d ), which rests on the one hand at the bottom of the recess 27 and on the other hand on the guide block 6 and generates a spreading force which pushes the wear plate away from the guide block 6 and presses against the guide surface 18 of the pressure transmission body 4a, 4b.
- FIG. 5a A known in the art as a T-block bending device, which is equipped with the Schl hinderplatten invention is shown in schematic representations in FIG. 5a in a deployed operating position and in FIG. 5b shown in a retracted operating position. These two operating positions are determined by the maximum possible vertical displacement of the two T-shaped pressure transmitting body 4a and 4b.
- the pressure transmission body 4a and 4b are guided vertically in a guide block 6, wherein the bending cylinder 5 each engage the horizontal legs 9 of the pressure transmission body and are embedded in receiving recesses 14 of the guide block 6.
- the vertical guides of the pressure transmission body 4a and 4b on the guide block 6 is carried out by self-adjusting wear plates 7, which are designed in their structural design and in terms of lubricant supply alike, as the wear plates according to the representations in the FIGS. 1 to 4 ,
- the invention is not limited to the illustrated embodiments.
- the self-adjusting wear plates with the sliding surface abut a vertical guide surface of the guide block and be supported with the cylindrical or spherical shaped support surface in a mating support surface on the pressure transmitting body.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
- Straightening Metal Sheet-Like Bodies (AREA)
- Bearings For Parts Moving Linearly (AREA)
- Metal Rolling (AREA)
Abstract
Description
Die Erfindung betrifft eine Biegevorrichtung für zwei Arbeitswalzen eines Walzgerüstes mit in seitlichen Walzenständern vorgesehenen Führungsblöcken für zwei vertikal verstellbare Druckübertragungskörper, an denen die Arbeitswalzen über Einbaustücke abgestützt sind, und mit paarweise zwischen den Druckübertragungskörpern angeordneten Biegezylindern, die eine an einem Druckübertragungskörper angreifende Kolbenstange und einen vom jeweils anderen Druckübertragungskörper gebildeten oder gehaltenen Zylinder aufweisen, wobei die Druckübertragungskörper am jeweiligen Führungsblock gleitend abgestützt sind.The invention relates to a bending device for two work rolls of a roll stand provided in lateral roll stands guide blocks for two vertically adjustable pressure transmission body, on which the work rolls are supported on chocks, and arranged in pairs between the pressure transmission bodies bending cylinders, which acts on a pressure transmitting body piston rod and one of each having other pressure transmitting body formed or held cylinder, wherein the pressure transmitting body are slidably supported on the respective guide block.
Biegevorrichtungen für axial verschiebbare Arbeitswalzen eines Walzgerüstes dieser Art sind beispielsweise aus der
Gemäß der
Aus der
Der Erfindung liegt somit die Aufgabe zugrunde, eine Biegevorrichtung für die Arbeitswalzen eines Walzgerüstes der eingangs beschriebenen Art so auszugestalten, dass quer zur Bewegungsebene der Druckübertragungskörper wirkende Reaktionskräfte infolge von Kippstellungen der Druckübertragungskörper frei von Kantenpressung in den Führungsblock abgeleitet werden können.The invention is therefore based on the object, a bending device for the work rolls of a rolling mill of the type described above in such a way that transversely to the plane of movement of the pressure transmission body acting reaction forces due to tilting of the pressure transmission body can be derived free of edge pressure in the guide block.
Die Erfindung löst die gestellte Aufgabe dadurch, dass die Druckübertragungskörper durch sich selbst einstellende Schleißplatten am jeweiligen Führungsblock gleitend abgestützt sind und die sich selbst einstellenden Schleißplatten eine ebene Gleitfläche und eine zylindrisch oder sphärisch ausgeformte Stützfläche aufweisen. Damit wird ein vollflächiges Anliegen der Schleißplatten an der entsprechenden Stützfläche erreicht und das Entstehen einer lokalen Kantenpressung durch eine annähernd gleichmäßige Lastverteilung vollständig vermieden. Dies führt zu einer wesentlichen Verlängerung der Lebensdauer der Schleißplatten, wobei durch diese Maßnahme eine Verlängerung der Lebensdauer auf das Dreifache erwartet wird. Durch das vollflächige Anliegen der Schleißplatten treten auch keine Schmierprobleme im Kantenbereich der Schleißplatten mehr auf, die ansonsten bei ungleicher Flächenbelastung und daraus resultierender Keilspaltbildung durch das Abfließen des Schmiermittels von Bereichen mit hoher Flächenpressung verstärkt entstehen.The invention solves this problem by the fact that the pressure transmitting body are slidably supported by self-adjusting wear plates on the respective guide block and the self-adjusting wear plates have a flat sliding surface and a cylindrical or spherical shaped support surface. Thus, a full-surface concerns of Schleißplatten is achieved at the corresponding support surface and the emergence of a local edge pressure completely avoided by an approximately uniform load distribution. This leads to a substantial extension of the service life of the wear plates, whereby by this measure an extension of the service life is expected to triple. Due to the full-surface concerns of Schleißplatten occur no lubrication problems in the edge region of the wear plates on more, which otherwise arise reinforced with uneven surface load and consequent wedge gap formation by the flow of lubricant from areas with high surface pressure.
Die ebene Gleitfläche der Schleißplatte liegt an einer Führungsfläche des Druckübertragungskörpers gleitend an und die zylindrisch oder sphärisch ausgeformte Stützfläche der Schleißplatte ist an einer entsprechend ausgebildeten zylindrisch oder sphärisch ausgebildeten Gegenstützfläche des Führungsblockes schwenkbar abgestützt.The flat sliding surface of the wear plate slidably abuts a guide surface of the pressure transmitting body and the cylindrical or spherical shaped support surface of the wear plate is pivotally supported on a correspondingly formed cylindrical or spherical counter support surface of the guide block.
Die flächenmäßige Ausdehnung der Gleitfläche der Schleißplatten ist so gewählt, dass die maximal auftretende Flächenpressung, bei Annahme einer gleichmäßig verteilten Kippkraft auf die gesamte Gleitfläche, circa die Hälfte, vorzugsweise ein Drittel, der zulässigen Flächenpressung nicht überschreitet. Je höher diese rechnerische maximale Flächenpressung bei unveränderter Werkstoffpaarung ist, umso geringer wird die zu erwartende Lebensdauer sein.The areal extent of the sliding surface of the wear plates is selected so that the maximum occurring surface pressure, assuming a uniformly distributed tilting force on the entire sliding surface, about half, preferably one third, does not exceed the permissible surface pressure. The higher this calculated maximum surface pressure with unchanged material pairing, the lower will be the expected service life.
Zur Sicherstellung der notwendigen Beweglichkeit der Schleißplatten ist eine ständige beziehungsweise periodisch wiederkehrende Schmierung der Gleitfläche und der Stützfläche der Schleißplatten erforderlich. Sowohl der Gleitfläche als auch der Stützfläche jeder selbst einstellenden Schleißplatte ist mindestens eine Austrittsöffnung einer Schmiermittel-Versorgungsleitung zugeordnet, wobei diese Austrittsöffnungen vorzugsweise jeweils in die Gleitfläche und die Stützfläche münden. Zweckmäßig ist die Führung der Schmiermittel-Versorgungsleitung zu der jeweiligen Schleißplatte durch den Führungsblock. Eine vorteilhafte Anordnung dieser Schmiermittel-Versorgungsleitungen erfolgt so, dass der Gleitfläche und der Stützfläche der sich selbst einstellenden Schleißplatte jeweils mindestens eine Austrittsöffnung einer gemeinsamen Schmiermittel-Versorgungsleitung zugeordnet ist, wobei die Schmiermittel-Versorgungsleitung die Schleißplatte zwischen der Stützfläche und der Gleitfläche durchsetzt zur Sicherung einer gleichmäßigen Schmiermittelverteilung sind in die Gleitfläche und die Stützfläche der Schleißplatten Schmiermittelkanäle eingearbeitet.To ensure the necessary mobility of Schleißplatten a constant or periodically recurring lubrication of the sliding surface and the support surface of the wear plates is required. Both the sliding surface and the support surface of each self-adjusting wear plate is associated with at least one outlet opening of a lubricant supply line, these outlet openings preferably opening respectively into the sliding surface and the support surface. Suitably, the leadership of the lubricant supply line to the respective wear plate through the guide block. An advantageous arrangement of these lubricant supply lines is such that the sliding surface and the support surface of the self-adjusting wear plate is assigned at least one outlet opening of a common lubricant supply line, wherein the lubricant supply line passes through the wear plate between the support surface and the sliding surface for securing a uniform lubricant distribution are incorporated in the sliding surface and the support surface of the wear plates lubricant channels.
Der Abstand der Schleißplatten am vertikal angeordneten Schenkel der Druckübertragungskörper (Hebelarm der Kippkräfte am Führungsblock) ist so gewählt, dass während des Betriebes des Biegeblockes niemals Schmiermittelkanäle freiliegen.The distance between the wear plates on the vertically arranged leg of the pressure transmission body (lever arm of the tilting forces on the guide block) is selected so that during operation of the bending block never exposed lubricant channels.
Die bevorzugte Ausführungsform der Schleißplatte ist mit einer zylindrischen Stützfläche ausgestattet. Dieser zylindrischen Stützfläche, die in einem Querschnitt ein Kreisbogen abbildet, ist ein Radiusmittelpunkt auf einer Längsachse der Schleißplatte zugeordnet. Die Lagerung, und falls notwendig eine zusätzliche Befestigung der Schleißplatte, erfolgt an einer ebenfalls zylindrisch ausgebildeten Gegenstützfläche am Führungsblock. Die Radiusmittelpunkte der zylindrischen Stützfläche der Schleißplatte und der zylindrischen Gegenstützfläche des Führungsblockes liegen vorzugsweise beide auf einer gemeinsamen Längsachse, wodurch eine (geringe) Drehbewegung um diese Längsachse ermöglicht wird. Diese Längsachse liegt vorzugsweise außerhalb der Schleißplatte. Die Längsachse ist normal zu den Drehachsen der Arbeitswalzen ausgerichtet. Die Drehbewegung liegt in einer Größenordnung von etwa 1/10°.The preferred embodiment of the wear plate is equipped with a cylindrical support surface. This cylindrical support surface, which forms a circular arc in a cross section, is assigned a radius center on a longitudinal axis of the wear plate. The storage, and if necessary an additional attachment of the wear plate is carried out on a likewise cylindrically shaped mating support surface on the guide block. The radius centers of the cylindrical support surface of the wear plate and the cylindrical counter support surface of the guide block are preferably both on a common longitudinal axis, whereby a (small) rotational movement about this longitudinal axis is made possible. This longitudinal axis is preferably outside of the wear plate. The longitudinal axis is aligned normal to the axes of rotation of the work rolls. The rotational movement is on the order of about 1/10 °.
In Abhängigkeit von Reibung und Schmierung an der zylindrischen Stützfläche der Schleißplatte, die über eine mittig eingearbeitete Schmiertasche mit Schmiermittel versorgt wird, und von der Reibung und Schmierung der Gleitfläche der Schleißplatte stellt sich ein Gleichgewichtszustand ein, bei dem die resultierende Kippkraft auf die Gleitfläche der Schleißplatte mit nur geringem Abstand von der Mitte der Gleitfläche wirkt. Je kleiner der Kreisradius gewählt werden kann, umso besser ist die Selbsteinstellwirkung der Schleißplatte, jedoch steigt mit abnehmendem Radius die Kippkraftflächenpressung an.Depending on friction and lubrication on the cylindrical support surface of the wear plate, which is supplied via a centrally machined lubrication pocket with lubricant, and of the friction and lubrication of the sliding surface of the wear plate, an equilibrium state, in which the resulting tilting force on the sliding surface of the Wear plate acts only a short distance from the center of the sliding surface. The smaller the radius of the circle can be chosen, the better the self-adjusting effect of the wear plate, but with decreasing radius increases the Kippkraftflächenpressung.
Eine sphärische Abstützung der Schleißplatte mit einer kugelkappenförmigen Stützfläche ist vor allem dann zweckmäßig, wenn mit Kippbewegungen der Druckübertragungskörper in einer zweiten Normalebenen bzw. mit erheblichen Deformationen des Führungsblocks zu rechnen ist, insbesondere wenn diese eine Größenordnung erreichen, bei der geringe plastische Verformungen an kreissegment-zylinderförmigen Schleißleisten auftreten.A spherical support of Schleißplatte with a spherical cap-shaped support surface is particularly useful when tilting movements of the pressure transmitting body in a second normal planes or with considerable deformation of the guide block is to be expected, especially if they reach an order of magnitude, in the small plastic deformations on kreissegment- cylindrical Schleißleisten occur.
Insbesondere zur Lagefixierung der Schleißplatten während der Montage der einzelnen Bauteile ist es zweckmäßig, wenn die Schleißplatte mit einem eine Schwenkbewegung der Schleißplatte relativ zum Führungsblock zulassenden Befestigungselement in dem die Gegenstützfläche aufnehmenden Führungsblock festgelegt ist. Dieses Befestigungselement kann von einer in der ebenen Gleitfläche der Schleißplatte versenkte Schraube gebildet sein die jedoch lediglich eine lose Positionierung der Schleißplatte und keinesfalls deren Lagefixierung bezweckt.In particular, for fixing the position of the wear plates during assembly of the individual components, it is expedient if the wear plate is fixed with a pivoting movement of the wear plate relative to the guide block allowing fastener in which the counter support surface receiving guide block. This fastener may be formed by a sunken in the flat sliding surface of the wear plate screw which, however, only a loose positioning of the wear plate and in no case their positional fixation aims.
Auch bei einer geringen Kippstellung der Druckübertragungskörper ist das ständige Anliegen aller selbst einstellenden Schleißplatten an den vertikalen Stützflächen der Druckübertragungskörper notwendig, um eine optimale Schmierung der Schleißplatten zu gewährleisten. Hierzu ist zwischen der sich selbst einstellenden Schleißplatte und dem die Schleißplatte abstützenden Führungsblock ein an der Schleißplatte und am Führungsblock anliegendes bzw. angreifendes Spreizelement in einer Ausnehmung angeordnet. Zweckmäßig ist dieses Spreizelement von einer Blattfeder gebildet, mit der eine Spreizkraft zwischen der Schleißplatte und dem Führungsblock erzeugt wird, so dass der Kontakt zwischen der Schleißplatte und dem Druckübertragungskörper stets aufrecht erhalten bleibt.Even with a low tilt position of the pressure transmission body is the constant concern of all self-adjusting wear plates on the vertical support surfaces of the pressure transmission body necessary to ensure optimum lubrication of the wear plates. For this purpose, between the self-adjusting wear plate and the guide plate supporting the wear plate, a spreading element abutting or acting on the wear plate and on the guide block is arranged in a recess. Suitably, this expansion element is formed by a leaf spring, with which a spreading force between the wear plate and the guide block is generated, so that the contact between the wear plate and the pressure transmission body is always maintained.
Nach einer bevorzugten Ausführungsform der Biegevorrichtung sind die paarweise zusammenwirkenden Druckübertragungskörper L-förmig mit einem längeren vertikalen und einem kürzeren horizontalen Schenkel ausgebildet und es liegen die Schenkel der Druckübertragungskörper einander im Wesentlichen in einer zu den Arbeitswalzen parallelen Ebene paarweise gegenüber. Alle vertikalen Stützflächen der Druckübertragungskörper, die in zu der die Arbeitswalzen aufnehmenden Ebene vertikalen Normalebenen angeordnet sind, sind ausschließlich mit sich selbst einstellenden Schleißplatten bestückt. Der horizontale und der vertikale Schenkel können auch gleiche Länge aufweisen.According to a preferred embodiment of the bending device, the pressure transmitters cooperating in pairs are L-shaped with a longer vertical and a shorter horizontal leg and the legs of the pressure transmission bodies lie opposite one another in pairs in a plane parallel to the work rolls. All vertical support surfaces of the pressure transmitting body, which are arranged in to the work rolls receiving plane vertical normal planes are exclusively self-adjusting Wear plates fitted. The horizontal and the vertical leg can also have the same length.
Weitere Vorteile und Merkmale der vorliegenden Erfindung ergeben sich aus der nachfolgenden Beschreibung eines nicht einschränkenden Ausführungsbeispiels, wobei auf die beiliegenden Figuren Bezug genommen wird, die folgendes zeigen:
- Fig. 1
- eine erste Ausführungsform einer erfindungsgemäßen Biegevorrichtung (L-Block) ausschnittsweise in einem zu den Arbeitswalzen parallelen Schnitt durch die Druckübertragungskörper,
- Fig. 2
- diese Biegevorrichtung in einem Schnitt nach der Linie II-II der
Fig. 1 , - Fig. 3
- eine selbst einstellende Schleißplatte in einer vergrößerten Darstellung,
- Fig. 4a
- eine Draufsicht auf die ebene Gleitfläche einer erfindungsgemäßen Schleißplatte mit einer möglichen Anordnung von Schmiermittelkanälen,
- Fig. 4b
- ein Querschnitt durch die Schleißplatte entlang der Schnittlinie A-A in
Fig. 4a , - Fig.4c
- ein Querschnitt durch die Schleißplatte entlang der Schnittlinie B-B in
Fig. 4a , - Fig. 4d
- eine vergrößerte Darstellung der Ausnehmung für die Aufnahme eines Spreizelementes an einer Schleißplatte gemäß
Fig. 4c , - Fig. 5a
- eine zweite Ausführungsform der erfindungsgemäße Biegevorrichtung (T-Block) in einer ausgefahrenen Betriebsposition,
- Fig.5b
- die zweite Ausführungsform der Biegevorrichtung in einer eingefahrenen Betriebsposition.
- Fig. 1
- a first embodiment of a bending device according to the invention (L-block) fragmentary in a parallel to the work rolls section through the pressure transmission body,
- Fig. 2
- this bender in a section along the line II-II of
Fig. 1 . - Fig. 3
- a self-adjusting wear plate in an enlarged view,
- Fig. 4a
- a plan view of the flat sliding surface of a wear plate according to the invention with a possible arrangement of lubricant channels,
- Fig. 4b
- a cross section through the wear plate along the section line AA in
Fig. 4a . - 4c
- a cross section through the wear plate along the section line BB in
Fig. 4a . - Fig. 4d
- an enlarged view of the recess for receiving a spreader on a wear plate according to
Fig. 4c . - Fig. 5a
- a second embodiment of the bending device (T-block) according to the invention in an extended operating position,
- 5 b
- the second embodiment of the bending device in a retracted operating position.
Funktional gleiche Bauteile sind in den nachfolgend beschriebenen Ausführungsformen jeweils mit gleichen Bezugszeichen gekennzeichnet.Functionally identical components are each identified with the same reference numerals in the embodiments described below.
Wie in den
Die paarweise angeordneten und den Druckübertragungskörpern 4a und 4b zugeordneten beiden Biegezylinder 5 liegen in einer gemeinsamen Ebene, die der Bildebene der
Die
Eine in der Fachwelt als T-Block bekannte Biegeeinrichtung, die mit den erfindungsgemäßen Schleißplatten ausgestattet ist, ist in schematischen Darstellungen in
Die Erfindung ist nicht auf die dargestellten Ausführungsformen beschränkt. In gleicher Weise können beispielsweise die selbst einstellenden Schleißplatten mit der Gleitfläche an einer vertikalen Führungsfläche des Führungsblockes anliegen und mit der zylindrisch oder sphärisch ausgeformten Stützfläche in einer Gegenstützfläche am Druckübertragungskörper abgestützt sein.The invention is not limited to the illustrated embodiments. In the same way, for example, the self-adjusting wear plates with the sliding surface abut a vertical guide surface of the guide block and be supported with the cylindrical or spherical shaped support surface in a mating support surface on the pressure transmitting body.
Claims (7)
- Bending device for two working rolls of a rolling stand having guide blocks (6) provided in lateral roll housings for two vertically adjustable pressure-transmission bodies (4a, 4b), on which the working rolls (1) are supported via chocks (2), and having bending cylinders (5) which are arranged in pairs between the pressure-transmission bodies (4a, 4b) and have a piston rod (12) acting on one pressure-transmission body (4a or 4b) and a cylinder (10) formed or held by the respective other pressure-transmission body (4b or 4a), the pressure-transmission bodies (4a, 4b) being supported on the respective guide block (6) in a sliding manner, characterized in that the pressure-transmission bodies (4a, 4b) are supported on the respective guide block (6) in a sliding manner by self-adjusting wearing plates (7) and the self-adjusting wearing plate (7) has a planar sliding surface (17) and a cylindrically or spherically shaped support surface (19).
- Bending device as claimed in Claim 1, characterized in that at least one respective outlet opening of a lubricant supply line (25) is associated with the sliding surface (17) and the support surface (19) of the self-adjusting wearing plate (7).
- Bending device as claimed in Claim 1, characterized in that at least one respective outlet opening of a common lubricant supply line (25) is associated with the sliding surface (17) and the support surface (19) of the self-adjusting wearing plate (7), the lubricant supply line (25) penetrating the wearing plate (7) between the support surface (19) and the sliding surface (17).
- Bending device as claimed in one of the preceding claims, characterized in that the planar sliding surface (17) of the wearing plate (7) rests against a guide surface (18) of the pressure-transmission body (4a, 4b) in a sliding manner and the cylindrically or spherically shaped support surface (19) of the wearing plate (7) is pivotably supported on a correspondingly configured, cylindrically or spherically configured mating support surface (20) of the guide block (4a, 4b).
- Bending device as claimed in one of the preceding claims, characterized in that the wearing plate (7) is secured to the guide block (6) by a fastening element (23) allowing a pivoting movement of the wearing plate relative to the guide block (6).
- Bending device as claimed in one of the preceding claims, characterized in that between the self-adjusting wearing plate (7) and the guide block (6) supporting the wearing plate (7), a spreading element (28) acting on the wearing plate and on the guide block, preferably a tension spring, is arranged in a recess (27) of the wearing plate (7).
- Bending device as claimed in one of the preceding claims, characterized in that the pressure-transmission bodies (4a, 4b) are L-shaped in their configuration with a longer vertical (8) and a shorter horizontal (9) leg, in that the legs (8, 9) of the pressure-transmission bodies (4a, 4b) oppose one another in pairs in a plane parallel to the working rolls (1) and in that all vertical support surfaces of the pressure-transmission bodies arranged in normal planes vertical to the plane receiving the working rolls are supported exclusively by self-adjusting wearing plates.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL07723869T PL2012943T3 (en) | 2006-04-21 | 2007-04-02 | Bending device for two working rolls of a rolling stand |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT0068206A AT504208B1 (en) | 2006-04-21 | 2006-04-21 | BENDING DEVICE FOR TWO WORKING ROLLERS OF A ROLLING MILL |
PCT/EP2007/002928 WO2007121832A1 (en) | 2006-04-21 | 2007-04-02 | Bending device for two working rolls of a rolling stand |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2012943A1 EP2012943A1 (en) | 2009-01-14 |
EP2012943B1 true EP2012943B1 (en) | 2010-11-24 |
Family
ID=38110750
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07723869A Not-in-force EP2012943B1 (en) | 2006-04-21 | 2007-04-02 | Bending device for two working rolls of a rolling stand |
Country Status (11)
Country | Link |
---|---|
US (1) | US8196444B2 (en) |
EP (1) | EP2012943B1 (en) |
KR (1) | KR101379882B1 (en) |
CN (1) | CN101426595B (en) |
AT (2) | AT504208B1 (en) |
BR (1) | BRPI0710462A2 (en) |
DE (1) | DE502007005761D1 (en) |
PL (1) | PL2012943T3 (en) |
RU (1) | RU2417129C2 (en) |
UA (1) | UA96443C2 (en) |
WO (1) | WO2007121832A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1772203A1 (en) | 2005-10-10 | 2007-04-11 | VAI Industries (UK) Limited | Roll bending device |
DE102008015826A1 (en) * | 2008-03-27 | 2009-10-01 | Sms Siemag Aktiengesellschaft | rolling mill |
DE102009058876A1 (en) * | 2009-01-23 | 2010-07-29 | Sms Siemag Ag | Bending and balancing device for axially displaceable work rolls of a roll stand |
ITMI20101502A1 (en) * | 2010-08-05 | 2012-02-06 | Danieli Off Mecc | INTEGRATED BENDING AND SHIFTING SYSTEM UNDER LOAD FOR CAGES WITH HIGH OPENING BETWEEN THE WORKING ROLLERS |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SU1031544A1 (en) | 1981-11-11 | 1983-07-30 | Колпинское отделение Всесоюзного научно-исследовательского и проектно-конструкторского института металлургического машиностроения | Prestressed rolling stand |
DE3769809D1 (en) | 1986-01-17 | 1991-06-13 | Schloemann Siemag Ag | STANDING BENDING DEVICE FOR AXIAL SLIDING ROLLS OF A MULTI-ROLLING DEVICE. |
DE3601669A1 (en) * | 1986-01-21 | 1987-07-23 | Linde Ag | METHOD FOR BIOLOGICAL WASTE WATER TREATMENT |
DE3627690A1 (en) | 1986-08-14 | 1988-02-25 | Schloemann Siemag Ag | BENDING AND BALANCING DEVICE FOR AXIAL SLIDING WORK ROLLS OF A QUARTO ROLLING DEVICE |
FR2611541B1 (en) | 1987-02-27 | 1994-04-29 | Clecim Sa | DEVICE FOR ADJUSTING THE PROFILE AND DISTRIBUTION OF WEAR OF CYLINDERS IN A ROLLER WITH AXIALLY MOVABLE CYLINDERS |
SU1637892A1 (en) | 1987-11-24 | 1991-03-30 | Центральный научно-исследовательский институт черной металлургии им.И.П.Бардина | Prestressed rolling stand |
JPH0811241B2 (en) | 1987-11-26 | 1996-02-07 | 株式会社日立製作所 | Work roll shift rolling machine |
DE4034436A1 (en) * | 1990-10-29 | 1992-04-30 | Schloemann Siemag Ag | ROLLING DEVICE WITH ARRANGEMENT FOR DISTANTLY SUPPORTING THE UPPER WORKING ROLLER |
US5329849A (en) * | 1993-06-11 | 1994-07-19 | Beloit Technologies, Inc. | Self-loading controlled crown roll |
DE19536042A1 (en) * | 1995-09-28 | 1997-04-03 | Schloemann Siemag Ag | Guide device for four or multi-roll stands |
DE19807785C1 (en) * | 1998-02-18 | 1999-03-04 | Mannesmann Ag | Bending apparatus for roll stands |
AT407124B (en) | 1998-10-19 | 2000-12-27 | Voest Alpine Ind Anlagen | BENDING DEVICE FOR TWO WORK ROLLS OF A ROLLING STAND |
DE19922373A1 (en) * | 1999-05-14 | 2000-11-16 | Sms Demag Ag | Ingots used in hot rolling have a double acting hydraulic piston cylinder unit with both ends connected to guide pieces |
US6073474A (en) * | 1999-06-24 | 2000-06-13 | Danieli United, A Divison Of Danieli Corporation | "C" block roll bending |
DE10123794A1 (en) * | 2000-06-30 | 2002-01-17 | Sms Demag Ag | Roll stand, in particular duo or four-roll stand, comprising bending and balancing device for axially displaceable rolls |
DE10334682A1 (en) * | 2003-07-30 | 2005-02-17 | Sms Demag Ag | rolling device |
-
2006
- 2006-04-21 AT AT0068206A patent/AT504208B1/en not_active IP Right Cessation
-
2007
- 2007-04-02 RU RU2008145856/02A patent/RU2417129C2/en not_active IP Right Cessation
- 2007-04-02 EP EP07723869A patent/EP2012943B1/en not_active Not-in-force
- 2007-04-02 DE DE502007005761T patent/DE502007005761D1/en active Active
- 2007-04-02 CN CN2007800144010A patent/CN101426595B/en not_active Expired - Fee Related
- 2007-04-02 WO PCT/EP2007/002928 patent/WO2007121832A1/en active Application Filing
- 2007-04-02 US US12/297,678 patent/US8196444B2/en not_active Expired - Fee Related
- 2007-04-02 KR KR1020087028402A patent/KR101379882B1/en not_active IP Right Cessation
- 2007-04-02 UA UAA200813195A patent/UA96443C2/en unknown
- 2007-04-02 AT AT07723869T patent/ATE489179T1/en active
- 2007-04-02 PL PL07723869T patent/PL2012943T3/en unknown
- 2007-04-02 BR BRPI0710462-6A patent/BRPI0710462A2/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
US8196444B2 (en) | 2012-06-12 |
WO2007121832A1 (en) | 2007-11-01 |
KR20080108364A (en) | 2008-12-12 |
RU2008145856A (en) | 2010-05-27 |
AT504208B1 (en) | 2008-04-15 |
UA96443C2 (en) | 2011-11-10 |
AT504208A4 (en) | 2008-04-15 |
CN101426595B (en) | 2012-07-11 |
RU2417129C2 (en) | 2011-04-27 |
BRPI0710462A2 (en) | 2011-08-16 |
PL2012943T3 (en) | 2011-05-31 |
CN101426595A (en) | 2009-05-06 |
ATE489179T1 (en) | 2010-12-15 |
EP2012943A1 (en) | 2009-01-14 |
KR101379882B1 (en) | 2014-03-28 |
DE502007005761D1 (en) | 2011-01-05 |
US20090100891A1 (en) | 2009-04-23 |
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