EP1782896B1 - Procédé pour le formage d' une pièce et machine de laminage - Google Patents

Procédé pour le formage d' une pièce et machine de laminage Download PDF

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Publication number
EP1782896B1
EP1782896B1 EP07004135.5A EP07004135A EP1782896B1 EP 1782896 B1 EP1782896 B1 EP 1782896B1 EP 07004135 A EP07004135 A EP 07004135A EP 1782896 B1 EP1782896 B1 EP 1782896B1
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EP
European Patent Office
Prior art keywords
rollers
relative position
rotation axes
nominal
rotation
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
EP07004135.5A
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German (de)
English (en)
Other versions
EP1782896A2 (fr
EP1782896A3 (fr
Inventor
Günter Dipl.-Ing. Hofmann
Stelios Dipl.-Ing. Katsibardis
Siegfried Dipl.-Ing. Hausdörfer
Henry Dipl.-Ing. Zwilling
Günther Dipl.-Ing. Vogler
Herbert Dipl.-Ing. Rüger
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.)
Langenstein and Schemann GmbH
Original Assignee
Langenstein and Schemann GmbH
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 Langenstein and Schemann GmbH filed Critical Langenstein and Schemann GmbH
Priority claimed from EP20040002972 external-priority patent/EP1454685B1/fr
Publication of EP1782896A2 publication Critical patent/EP1782896A2/fr
Publication of EP1782896A3 publication Critical patent/EP1782896A3/fr
Application granted granted Critical
Publication of EP1782896B1 publication Critical patent/EP1782896B1/fr
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
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H1/00—Making articles shaped as bodies of revolution
    • 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
    • B21B37/58—Roll-force control; Roll-gap control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H1/00—Making articles shaped as bodies of revolution
    • B21H1/18—Making articles shaped as bodies of revolution cylinders, e.g. rolled transversely cross-rolling
    • 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
    • B21B31/04—Rolling stand frames or housings; Roll mountings ; Roll chocks with tie rods in frameless stands, e.g. prestressed tie rods
    • 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
    • B21B31/08—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts
    • 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
    • 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
    • B21B35/141—Rigid spindle couplings, e.g. coupling boxes placed on roll necks
    • 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
    • B21B37/46—Roll speed or drive motor control

Definitions

  • the invention relates to a method for hot working a workpiece and a rolling machine suitable for carrying out the method.
  • longitudinal rolling the workpiece is moved perpendicular to the axes of rotation of the rollers in a translatory movement and usually without rotation through the gap between the rollers (nip).
  • transverse rolling the workpiece does not translate with respect to the rollers or their axes of rotation, but rotates only about its own axis, which is usually a main axis of inertia, in particular the axis of symmetry in a rotationally symmetrical workpiece.
  • the rollers are usually at an angle to each other and to the workpiece, which is translationally and rotationally moved.
  • Profile transverse rolling machines in which two rollers with wedge-shaped profile tools arranged on the outer circumference rotate in the same direction about axes of rotation parallel to one another, are sometimes referred to as transverse wedge rolling.
  • the tools have a wedge-shaped or triangular in cross-section geometry and can increase along the circumference in its axial dimension in one direction and / or extend obliquely to the axis of rotation of the rollers.
  • cross wedge or cross-profile rollers allow a variety of forming workpieces in high precision or dimensional accuracy.
  • the wedge-shaped tools can create circumferential grooves and other tapers in the rotating workpiece.
  • the outer diameter of the tool wedges when passing around the axis of rotation can be generated in combination with the oblique arrangement axially extending slopes and continuous transitions between two tapers of different diameters in the workpiece.
  • the wedge shape of the tools allows the production of fine structures through the wedge outer edges or outer surfaces.
  • Particularly suitable are cross wedge rollers for producing elongate, rotationally symmetrical workpieces with constrictions or elevations such as cams or ribs.
  • the forming pressure and the forming temperature depend on the material of which the workpiece is made, as well as the dimensional accuracy and surface quality requirements after forming.
  • the forming is usually carried out at elevated temperatures during rolling in order to achieve the formability or flowability of the material required for forming.
  • These temperatures, occurring in particular during forging, can, in the case of a so-called cold forming in the range of room temperature, in a warm forging between 550 ° C and 750 ° C and in a so-called hot forming above 900 ° C.
  • Cross wedge rolling machines are known, in which the workpieces at the beginning of the rolling process by means of a positioning device comprising two positioning supports (so-called guide rulers), in an initial position between the two rollers, which usually corresponds to the geometric center or the center of the nip , positioned.
  • the position of the rollers and their distance from each other are fixed in advance.
  • the positioning carriers of the positioning device are withdrawn, so that the workpiece rotates freely between the rollers and is kneaded between the tools in the desired shape.
  • the workpiece is detected and ejected via a recess in the rotating rolling tool.
  • Out DE 1 477 088 C is a cross wedge rolling machine for the transverse rolling of bodies of revolution or flat workpieces with two rotating in the same direction of rotation work rolls on the roll surfaces wedge tools are arranged interchangeable.
  • the wedge tools each have wedge-shaped or triangular extending from the roll shell to a height adjusted to the produced workpiece end, by knurling or otherwise roughened reduction strips and extending at the same distance from the roll shell, wedge-shaped smooth form surfaces with calibration effect.
  • the wedge tools are formed as deformation segments and extend only over a partial circumference of the associated roll surface. On the workpiece, the mutually facing surfaces and tools of the two work rolls move in opposite directions or in opposite directions to each other.
  • the EP 1 256 399 A1 discloses a cross rolling machine with two parallel operated modules of two rollers rotating in the same direction of rotation, the half-shell-shaped tools having radially projecting tool wedges on its peripheral surface, wherein the deformation of a workpiece requires only the rotation of half the circumference of a pair of rollers. All four rollers are powered by just one drive motor driven in each case via an interposed gear unit and drive shaft.
  • DE 100 19 175 A1 a method for producing a strip-shaped starting material from metal by means of rolling of a roll stand, which delimit a nip, wherein this is variable.
  • the invention is based on the object, a new method for forming workpieces and a new rolling machine, with this method is feasible to specify.
  • forming is understood here as any conversion of the shape of a workpiece into another form, as also described above, including preforming and finish forming.
  • the axes of rotation of the rollers are to be understood as geometric or mathematical axes in the (Euclidean, three-dimensional) space around which the rollers rotate. Power transmitting or mechanical axes are referred to in this application, however, as waves.
  • the invention is based initially on the consideration of performing an automatic or automatic (or: automatic) adjustment of the relative position of the axes of rotation of the rolls of the rolling machine, wherein generally at least one actuator is used. It is thus carried out according to the invention, in particular a control, regulation or correction whose control, control or correction variable is the relative position of the axes of rotation of the rollers.
  • rollers or tools it is not the rotational position of the rollers or tools about their axes of rotation, which is relevant for the deformation of the workpiece, influenced, but the spatial position of the rollers or tools, which can be defined by the position of the axes of rotation of the rollers or a stationary or translationally invariant spatial point ,
  • the relative position of the roller rotation axes also determines the position of the rollers or the tools relative to the workpiece at predetermined rotational positions of the rollers.
  • the relative position is controlled according to a predetermined control course or algorithm without feedback or relative position determination, generally on the basis of preset manipulated variable values as setpoint values for the actuator.
  • the rolling machine contains in accordance with a control or correction in an independently claimable variant or in a dependent claimed embodiment in addition to the forming rollers, the or the rotary drive (s) and the at least one actuator also at least one means for determining the relative position of the axes of rotation the rollers to each other, in particular during the Umformphase, and at least one control device which is connected to the means for determining the relative position of the axes of rotation and with each actuator or is operatively connected to correct the relative position of the axes of rotation to a desired relative position by means of or the actuators (s).
  • control device compares the determined values or signals to the relative position of the axes of rotation with the desired relative position and changed upon detection of an impermissible deviation from the desired relative position, the relative position of the roller rotation axes via the actuator or (e) until the deviation again within a permissible tolerance range.
  • the measures described above are now used in a further step of thinking in a mode which will also be referred to below as a forming mode.
  • a mode which will also be referred to below as a forming mode. This is based on the idea to use the control or regulation of the relative position of the axes of rotation of the rollers for adjusting the deformation and / or the forming pressure on the workpiece.
  • the relative position (or: the position (s) or the distance or the distances) of the axes of rotation of the rollers during the or at least one Umformphase and / or in a Umformkraftbelasteten condition of the rollers to the desired relative position (or : the target position (s) or the target distance (s) are controlled, regulated or corrected.
  • the desired relative position (or the setpoint position (s) or the setpoint distance (s) during the forming phase is or will be determined according to, generally as a function of the angular or rotational position of the rollers (position-controlled) or of the time ( time-controlled) predetermined course, which is adapted to a desired, in particular position-dependent or temporal course of the desired during forming of the workpiece forming or the deformation of the workpiece.
  • the increasing radial extent of a wedge tool can be at least partially reproduced or replaced by a reduction of the roll spacing.
  • the predetermined course of the desired relative position can be determined in advance and stored.
  • deviations in the tool from a predetermined shape, for example, due to dimensional tolerances or wear, by adjusting the target relative position of the axes of rotation of the rollers can be at least approximately compensated.
  • the relative position of the axes of rotation of the rollers during the forming phase is determined, preferably at a predetermined angular position of at least one of the rollers and / or a predetermined force load of the roller (s) or forming force.
  • a rotation angle sensor device for determining the roll rotation angle and / or a force sensor device for determining the deformation force can then be provided.
  • the correction or adjustment of the relative position of the axes of rotation of the rollers can now be carried out in real time or directly during the forming phase, in particular in the context of a continuous or in small time intervals taking place regulation.
  • the desired relative position then corresponds to the desired roll position during the forming.
  • the actual position of the relative position of the roller axes of rotation determined, in particular during the forming phase, only after or even before the forming and / or after ejection of the workpiece from the gap between the tools or the rollers and / or in a state relieved of deformation of the rollers corrected a desired relative position.
  • the desired relative position is then optionally adjusted to a desired position in the loaded state or during the forming phase. It can then be omitted during the forming phase, a change in the relative position by the at least one actuator.
  • the rollers are generally rotatable or rotatably mounted in two storage facilities.
  • the position of the axis of rotation of one of the rollers can be controlled or controlled to a desired position and the position of the axis of rotation of the other roller (s) unchanged or stationary relative to the environment. especially to the ground, stay.
  • the lower roller can remain stationary and only the upper roller can be adjusted.
  • the positions of the axes of rotation of both rollers for correcting or changing the relative position of their axes of rotation are adjustable or variable and can be regulated or corrected to associated desired positions.
  • the rollers can now be either independently, i. without a coupling of their movement, with their own actuators or also dependent on each other, i. be with a control technology or mechanical coupling, be adjustable or adjusted.
  • Such a synchronous movement can be realized in particular with independent actuators by a common control or by a mechanical coupling with gear (s).
  • each determined distance can be compared for itself with an associated desired distance and corrected for a deviation from the desired distance outside a predetermined tolerance range to the desired distance.
  • the central axis (or: geometric center, central position) in the space provided between the rollers or tools for receiving the workpiece can in particular be positioned by a positioning device the workpiece may be defined between the rollers, wherein the central axis may lie within a movement plane or on a movement axis of two mutually movable positioning parts of the positioning device for holding the workpiece between the two positioning parts.
  • This determination of the roll positions or of the roll spacing relative to the workpiece has the advantage that a reliable reference position is established by the positioning device that is stationary in relation to the workpiece, which position defines the position of the workpiece.
  • the distances between the axes of rotation to the central axis are also in clear relation to the distances of the axes of rotation to each other.
  • the determination of the relative position of the axes of rotation to each other can thus take place in only one dimension or projection on a coordinate direction (spatial direction) or in two or even three dimensions or coordinate directions.
  • the rolling machine For measuring the position (s) or the distance / the distances of the axes of rotation of the rollers, the rolling machine generally comprises a measuring device, in particular at least one non-contact sensor, in particular an ultrasonic sensor and / or an optical sensor and / or an inductive sensor and / or a magnetic sensor, and / or a contacting sensor, such as a cable driver.
  • a measuring device in particular at least one non-contact sensor, in particular an ultrasonic sensor and / or an optical sensor and / or an inductive sensor and / or a magnetic sensor, and / or a contacting sensor, such as a cable driver.
  • the distances between the storage devices and the positioning device can be measured, wherein the sensors can be attached to their outer sides.
  • one of the two bearing devices or both bearing devices of at least one roller is moved via at least one actuator in an advantageous embodiment.
  • the adjustable roller (s) or their bearing device (s) for correcting or adjusting the relative position to the desired relative position or for adjusting the position (s) of its axis of rotation (s) or the distance of the axes of rotation Rolls moved linearly (or: straight, translationally).
  • a linear, purely translational Motion is easy to implement in terms of drive technology.
  • the direction of movement of the linear movement or displacement of the roller (s) is preferably directed substantially perpendicularly (or orthogonally) to the axes of rotation of the rollers. Furthermore, the movement can take place in particular in a vertical direction, ie parallel to the gravitational force.
  • Another type of movement for the rolls may also be advantageous, especially in the case of asymmetric thermal or mechanical changes in shape or volume in the rolling machine, such as a rotational or tilting movement or a compound composed of translational and rotational movement or along a predetermined, non-rectilinear trajectory (or : Movement path) taking place movement of the rotary axes.
  • the movement of the axes of rotation of the rollers can thus be done with one, two or even three degrees of freedom of movement.
  • an axis of rotation to be adjusted is preferably moved in two points of attack outside the roller, which can lie in particular in storage facilities of the roller.
  • the axes of rotation of the rollers are generally adjusted to an at least approximately parallel position to each other and are usually also main axes of inertia of the rollers, in particular cylindrical or central axes in cylindrical rollers.
  • the rollers and their axes of rotation viewed in the direction of gravity, are arranged one above the other or vertically relative to one another. But it is also a horizontal or oblique arrangement of the rollers and their axes of rotation possible.
  • the desired relative position, desired position (s) or desired distances of the axes of rotation of the rollers are dependent on the material and / or shape (or: geometry) of the workpiece to be reshaped or of the desired shape or desired Dimensions of the workpiece adjusted after forming.
  • shape of the current workpiece can be measured before the forming phase.
  • parameters of a workpiece can also be entered in advance by means of a pattern.
  • Another, particularly advantageous application of the invention is based on the recognition that during the forming process of a workpiece or a process with several successive forming processes when machining multiple workpieces expansions or contractions within the rolling machine, especially in the Carrier device of the rollers or even within the rollers and tools themselves, occur.
  • These changes in shape and volume are caused in particular by the forces acting upon forming (mechanical expansion or contraction) and by introducing the workpiece, which is at relatively high temperatures during hot or hot forming, and the associated temporal and spatial temperature changes that lead to thermal expansion or expansion Cause contraction.
  • These changes in shape or volume in the rolling machine are thus disturbances of the process and adversely affect the optimal or preset relative positions of the rolls or tools for the forming process.
  • the The invention provided correction or regulation of the relative position of the axes of rotation of the rollers to the desired relative position substantially compensated or compensated.
  • the compensation (or compensation or correction) of said thermal and mechanical shape or volume changes in other words, determines (or: determines) the relative position of the rollers or tools in space relative to each other , and adapted in an adjustment or correction step, if impermissible or intolerable deviations from a predetermined or optimal for the forming process or relative position of the rotational axes occur.
  • the forming process performed by the method and the rolling machine may be a cold forming process, but is preferably a hot working process or a hot forming process.
  • the correction of the roll positions according to the invention to compensate for or compensate for thermal changes is particularly advantageous.
  • the material of the workpiece may be ferrous, such as iron itself or a steel, or may be a non-ferrous metal material, such as aluminum or an aluminum alloy.
  • the rolling machine is designed as a profile cross rolling machine or cross wedge rolling machine whose basic structure has been described in the introduction.
  • the rollers have corresponding profile or wedge tools and rotate in the same direction with each other, wherein the workpiece rotates only about its own axis and is not transported translationally by the rollers.
  • the tools on the rollers are in particular wedge-shaped or triangular in cross-section and increase in their radial dimension in one direction along the circumference and / or extend obliquely to the axis of rotation of the associated roller.
  • the invention is also applicable to longitudinal rolling methods and machines, for example for stretch rolling, except in the case of cross rolling methods and machines.
  • At least one actuator can now be a hydraulic drive.
  • at least one or each actuator is an electric motor drive, in particular a spindle drive.
  • the accuracy of the adjusting movement of the actuators is preferably in the range of a few tenths of mm or even a few hundredths of a mm, preferably at least 0.1 mm, and / or one-thousandth of Verstellweges or -hubs.
  • the tolerance range for the correction or deviation of the relative position of the axes of rotation can be selected to the desired relative position in this order of magnitude.
  • the rolling machine is a stationary, not co-rotating with the rollers or non-rotatable carrier device (or: roll stand, Rolling rack) provided on the or the actuator (s) is stored or carried or are.
  • two respective holding devices which can be connected or connected to the roller with end faces of the roller and rotatable or co-rotating with the roller are provided for each roller.
  • the connection of the holding means with the rollers is preferably releasable to allow or facilitate a change of the tools or the rollers.
  • a bearing device in which the holding device is rotatably mounted is provided for each holding device.
  • the bearing devices with the retaining devices of at least one roller mounted in them are coupled or couplable to the actuator (s) associated with this roller and can be moved via the actuator (s) to change the position of the axis of rotation of the associated roller.
  • each bearing device is connected to an actuator and the control device controls the actuators of both storage facilities of a roller according to the desired movement of the axis of rotation of the roller.
  • the carrier device has guide regions for guiding the bearing devices during their movement.
  • the leadership of the storage facilities can be supported by plain bearings or bearings.
  • the rollers with the associated rotary drives each form a unit which is adjustable together by the actuators.
  • the relative arrangement or position of the rotary drive associated with the roller with respect to the roller thus remains unchanged or translationally invariant.
  • the non-rotating or rotatable parts of the associated rotary drive for rotating this roller are attached to one of the bearing devices of each roller and the co-rotating or mitrotierbaren drive parts of the rotary drive are rotatably mounted on or in the bearing device.
  • the carrier device comprises in a special structural design four carrier elements, wherein between two of the four carrier elements one of the bearing means of a first of the two rollers and one of Bearing means of the second of the two rolls and between the other two of the four support elements, the other bearing means of the first roller and the other bearing means of the second roller are arranged and preferably guided movably.
  • the actuators for the rollers are generally arranged on opposite sides of the rollers in order to leave space between the rollers and laterally for the workpieces and other machine parts.
  • the illustrated rolling machine according to 1 to 5 is designed as a cross wedge roller or cross wedge rolling machine and comprises a first work roll 2, which is rotatable or rotating about a rotation axis A, and a second work roll 3, which is rotatable about a rotation axis B or rotating.
  • the sense of rotation of both work rolls 2 and 3 is illustrated and the same with the arrows shown.
  • the axes of rotation A and B are essentially arranged parallel to each other and perpendicular to the arrowed direction of gravitational or gravitational force (gravitational force), so that the work rolls 2 and 3 are arranged one above the other.
  • the work rolls have a substantially cylindrical outer surface.
  • the distance W between the two axes of rotation A and B of the work rolls 2 and 3 is referred to below as the roll spacing.
  • the distance between the cylindrical outer surfaces of the two work rolls 2 and 3 is clearly linked to the distance W via the roll diameter.
  • a center axis (or center position) running parallel to the axes of rotation A and B between the two work rolls 2 and 3 and defining the geometric center is denoted by M.
  • M In symmetrical position of the two axes of rotation A and B to the central axis M, the distance between the two axes of rotation A and B to the central axis M is equal to W / 2.
  • wedge-shaped tools 20 and 21 or 30 and 31 are respectively fixed in cross-section, in particular braced or screwed.
  • the tools 20 and 21 of the first work roll 2 and the tools 30 and 31 of the second work roll 3 are each arranged obliquely and at an angle to the respective rotation axis A and B, wherein the tools 20 and 21 of the work roll 2 with respect to the central axis M axially in are arranged in substantially the same positions.
  • FIG. 2 shown position of the work rolls 2 and 3 are the tools 20 and 21 or 30 and 31 closer to each other on the inside facing each other than on the opposite outer side.
  • the tools 20 and 21 and 30 and 31 also increase in cross-section as viewed in the circumferential direction, with the increase in cross-section in the tools 20 and 21 being in the same direction of rotation or orientation and opposite in the tools 30 and 31 of the second working roller 3 or in the opposite direction to that of the tools 20 and 21 of the first work roll 2.
  • Each of the two work rolls 2 and 3 is now at its two ends on each one wave extension in two storage facilities 16 and 17 and 18 and 19 rotatably supported about the respective axis of rotation A and B respectively.
  • Distance sensors are arranged on the bearing devices, specifically a first distance sensor 51 for measuring the distance w1 substantially between the bearing device 16 and the center axis M (or else one arranged in the region of the center axis M) FIG. 1 not shown positioning means for positioning the workpiece), a second distance sensor 52 for measuring the distance w2 substantially between the bearing means 17 and the central axis M, a third distance sensor 53 for measuring the distance w3 substantially between the bearing means 18 and the central axis M and a Fourth distance sensor 54 for measuring the distance w4 substantially between the bearing means 19 and the center axis M.
  • the distance sensors 51 to 54 may be in particular ultrasonic sensors, optical, magnetic or inductive sensors or other known distance sensors.
  • the storage devices 16 to 19 are also each adjustable in position or position and that the bearing means 16 of an associated actuator 22, the bearing means 17 of an associated actuator 23, the bearing means 18 of an associated actuator 32 and the bearing means 19 of an associated actuator 33rd
  • the position (s) of the bearing device (s) 16 and / or 17 or 18 and / or 19 is now adjusted in their position.
  • the axis of rotation A is moved parallel. The distances w1 and w2 thus both increase by the same amount.
  • control device 55 is provided, which is connected via, preferably electrical, control lines to the actuators 22, 23, 32 and 33 and via, generally electrical, measuring lines for transmitting the measurement signals or measured values with the distance sensors 51, 52, 53 and 54 is connected.
  • the control device 55 now holds the axes of rotation A and B of the work rolls 2 and 3 in a predetermined relative position to each other, in particular the parallel position at the predetermined distance W, by the measured distances w1 to w4 with predetermined target intervals, preferably all equal to a common Desired distance are, compares and regulates to the desired distances or corrected by driving the actuators 22, 23, 32 and / or 34.
  • the control device 55 preferably includes at least one digital microprocessor or signal processor and at least one memory with a stored control or regulating algorithm for the Processor as well as stored or re-storable setpoints or command values for the control or regulation.
  • the FIGS. 2 to 5 show an embodiment of a rolling machine 1 in various representations.
  • the FIG. 2 shows a longitudinal section along a cutting plane containing the longitudinal direction of the rolling machine and the direction of gravity.
  • the FIG. 3 and 4 show side views of the rolling machine on the two front or narrow sides.
  • the cut of the FIG. 5 is in FIG. 2 . 3 and 4 marked with the arrows VV.
  • Each work roll 2 and 3 is detachably held between two holding means 12A and 12B and 13A and 13B arranged axially to the respective rotation axis A and B, respectively, and can be taken out of the holding means 12A and 12B or 13A and 13B in their unlocked state for exchanging the tools 20 and 21 or 30 and 31 or the entire work rolls 2 and 3 with the tools 20 and 21 or 30 and 31.
  • the holding device 12A in the storage device sixteenth and the holding device 12B are rotatably supported in the bearing device 17 about the rotation axis A of the first work roll 2 and the holding device 13A in FIG the bearing device 18 and the holding device 13B are rotatably mounted in the bearing device 19 in each case about the axis of rotation B of the second work roll 3.
  • a first rotary drive 42 for the first work roll 2 and a second, independent of the first rotary drive 42 rotary drive 43 for the second work roll 3 are provided.
  • Each rotary drive 42 and 43 includes an associated rotary drive motor 44 and 45 and a - not shown - rotary drive gear 46 and 47, for example, one, in particular three-stage, gear transmission, for transmitting the torque of the rotary drive motor 44 and 45 to the associated work roll 2 and 3.
  • the rotation axis C of the output shaft of the rotation drive motor 44 of the first rotation drive 42 and the rotation axis D of the output shaft of the rotation drive motor 45 of the second rotation drive 43 are orthogonal to the rotation axes A and B of the respective work rolls 2 and 3.
  • left arranged holding means 12A for the upper work roll 2 and 13A for the lower work roll 3 are each as solid waves (or hollow shafts) axially to the axes of rotation A and B through the associated storage facilities 16 and 18 continued and are with the - not closer shown - rotary drive gears 46 and 47 of the associated rotary drives 42 and 43 coupled or engaged.
  • An operation of the rotary drive motors 44 and 45 thus leads to the transmission of a rotational movement via the rotary drive gear 46 and 47 on the holding device 12A and 13A and thus on the work roll 2 and 3 and the co-rotating second holding means 12B and 13B.
  • the rotary drive motors 44 and 45 are preferably permanent magnet motors, in particular so-called torque motors.
  • the high dynamics or rotational acceleration and the high torque of the torque motor allows a very dynamic control or regulation of the rotational speed of the rotating work rolls 2 and 3 in adaptation to the rolling process.
  • Each of the permanent magnet motors 44 and 45 is controlled electronically, in particular via a converter.
  • the rolling machine 1 further comprises a support means (or a rolling stand or frame) 6.
  • the support means 6 comprises four columnar support members 6A to 6D arranged in a rectangular arrangement and on a common floor panel 6E supported on the floor 50 , mounted or attached.
  • the support members 6A to 6D extend vertically or vertically in a longitudinal direction, i. parallel to the gravitational force G.
  • an associated tie rod 7A to 7B is vertically arranged in the longitudinal direction of the respective support member which is fixed to the bottom of the support plate 6E and is biased at the top by means of an associated locknut, not specified, preferably a hydraulically operated locknut ,
  • an associated locknut not specified, preferably a hydraulically operated locknut
  • a split Unterlagsringsegment is preferably placed under the hydraulic nut when the hydraulic nut is in the pressurized state, and then pressed by relaxing the hydraulic pressure, the nut on the Unterlagsringsegment.
  • the support members 6A to 6D can be set under a certain tension and stiffened. This leads to a stiffening of the roll stand of the rolling machine. 1
  • the bearing device 16 is height-adjustable via a drive spindle (or adjusting spindle) 26 from a first actuator 22 disposed above along a vertical, i.
  • the axis E is parallel to the direction of gravity G and the bearing device 17 is height-adjustable via a drive spindle 27 from a second actuator 23 arranged above a vertical axis F.
  • the bearing device 18 is vertically adjustable via a drive spindle 36 from a third actuator 32 disposed below Axis E and the bearing device 19 is height-adjustable via a drive spindle 37 from a below arranged fourth actuator 33 along the vertical axis F.
  • Each actuator 22, 23, 32, 33 includes a drive motor 24, 25, 34, 35, via a drive shaft 28, 29, 38, 39 and an unspecified check gear with high reduction the drive spindle 26, 27, 36, 37 and so that the bearing device 16, 17, 18, 19 drives.
  • the maximum adjustment paths or Verstellhübe the actuators 22, 23, 32, 33 are typically 50 mm to 150 mm, the adjustment accuracy or Verstell suitse are typically in adaptation to the thermal expansions in the rolling machine some 1/100 mm.
  • the drive motors 24, 25, 34, 35 may be gear motors and / or three-phase induction motors or synchronous motors and / or permanent magnet motors (eg servomotors) with an electronic control and are acted upon for the high adjustment accuracy when adjusting only current pulses in the millisecond range.
  • the two storage devices 16 and 18 are guided vertically for their adjustment via guides 8B of the support member 6B and 8C of the support member 6C in or on the two support members 6B and 6C.
  • the two further bearing devices 17 and 19 are guided vertically for their adjustment via guides 8A of the support member 6A and 8D of the support member 6D in or on the two support members 6A and 6D.
  • working units each consisting of a work roll 2 or 3, two holding devices 12A and 12B or 13A and 13B, two storage devices 16 and 17 or 18 and 19 and a rotary drive 42 and 43 formed on each of two on the support means 6 fastened actuators 22 and 23 or 32 and 33 are suspended in height adjustable and are movable towards one another or away from each other and in or on the support means 6.
  • the bearing means 16 and 17 - and thus the entire working unit including the associated work roll 2 - by means of the actuators 22 and 23 in the same direction and by the same amount, ie simultaneously by the same stroke up or simultaneously by the same stroke down, the axis of rotation A of the first work roll 2 is moved parallel up or down.
  • the bearing means 18 and 19 and associated work unit with work roll 3 via the actuators 32 and 33 in the same direction and by the same amount the axis of rotation B of the second work roll 3 is moved parallel up or down.
  • the roll spacing W between the axes of rotation A and B of the two work rolls 2 and 3 or the tool spacing w can be varied.
  • the three process phases form a work cycle.
  • a plurality of such work cycles are usually carried out in succession.
  • the workpiece 10 is positioned between the rollers 2 and 3.
  • the workpiece 10 is according to FIG. 3 by means of two guide rulers or positioning parts 61 and 62 one only in FIG. 3
  • Positioning device 60 shown brought into a position on the central axis M between the work rolls 2 and 3.
  • the two positioning parts 61 and 62 are movable along a positioning axis P perpendicular to the central axis M, as indicated by the double arrows, in particular by means of rollers.
  • the positioning members 61 and 62 can be moved back in a long guide so that the work roll 2 and / or 3 can be changed without the positioning parts 61 and 62 must be dismantled.
  • the workpiece 10 is detected by the tools of the work rolls 2 and 3 and formed between the rotating tools of the rolls.
  • the distances w1, w2, w3 and w4 are measured as a measure of the distances between the axes of rotation A and B and the center axis M.
  • the formed workpiece is removed from the space between the rollers or ejected.
  • the distances w1 and w2 as well as w3 and w4 are now compared in particular with a common setpoint distance, so that a parallel position of the rotation axes A and B is therefore desired. If too great a deviation of one of the distances w1 to w4 from the nominal distance, the axes of rotation A and B are changed in their position as described until the deviation is eliminated or within a tolerance range.
  • the distances w1, w2, w3 and w4 can also be varied during the forming phase in a targeted manner according to a predetermined or temporal progression depending on the angular position of the roll (n) in order to influence the deformation of the workpiece.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Rolling Contact Bearings (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Control Of Metal Rolling (AREA)
  • Press Drives And Press Lines (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)

Claims (13)

  1. Procédé pour le formage à chaud d'une pièce métallique,
    a) selon lequel la pièce (10) est formée pendant au moins une phase de formage entre des surfaces ou outils (20, 21, 30, 31) de deux rouleaux (2, 3) étant chacun en rotation autour d'un axe de rotation respectif,
    b) selon lequel la position relative des axes de rotation (A, B) des rouleaux, l'un par rapport à l'autre, est commandé, régulée ou corrigée pendant la ou au moins une phase de formage, vers une position relative de consigne, notamment à l'aide d'au moins un dispositif de contrôle (55) et d'au moins un servomoteur (22, 23, 32, 33) associé à au moins un rouleau et asservi par le dispositif de contrôle,
    c) selon lequel la position relative de consigne est guidée pendant la phase de formage selon un déroulement prédéterminé, notamment fonction de la position angulaire ou de la position de rotation d'au moins un rouleau ou fonction du temps, déroulement qui est adapté à un déroulement souhaité de la pression de formage souhaitée pendant le formage de la pièce ou qui est adapté au formage de la pièce,
    d) selon lequel, avec le même au moins un outil ou les mêmes surfaces des rouleaux, différents formages d'une même pièce ou de différentes pièces peuvent être obtenus par réglage de différents déroulements de la position relative de consigne pendant différentes phases de formage, notamment en réduisant la distance des axes de rotation pendant au moins une partie de la phase de formage et/ou selon lequel des écarts de l'outil par rapport à une forme prédéterminée peuvent être compensées au moins approximativement par adaptation de la position relative de consigne des axes de rotation des rouleaux,
    e) selon lequel, pour la commande, la régulation ou la correction de la position relative des axes de rotation des rouleaux, respectivement deux distances (w1, w2, w3, w4) des axes de rotation (A, B) de chacun des rouleaux (2, 3) par rapport à un axe médian (M) dans l'espace intermédiaire entre les rouleaux ou outils, destiné à la réception de la pièce, sont commandées, régulées ou corrigées pour atteindre une distance de consigne correspondante constante ou variable et/ou sont déterminées et sont comparées à une distance de consigne correspondante constante ou variable et sont corrigées, en cas d'écart de la distance de consigne au-delà d'une plage de tolérance prédéterminée, pour atteindre la distance de consigne,
    f) selon lequel l'axe médian est situé à l'intérieur d'un plan de mouvement ou sur un axe de mouvement de deux parties, l'une vers l'autre, d'un dispositif de positionnement pour positionner la pièce, ou définit l'axe sur lequel la pièce est positionnée.
  2. Procédé selon la revendication 1, selon lequel
    a) la position relative des axes de rotation (A, B), l'un par rapport à l'autre, des rouleaux (2, 3) est déterminée pendant la phase de formage à une position d'angle de rotation prédéterminée d'au moins un des rouleaux et/ou à une charge en force prédéterminée du (ou des) rouleau(x),
    b) la position relative déterminée des axes de rotation est comparée à la position relative de consigne et il est vérifié s'il y a un écart entre la position relative déterminée des axes de rotation et la position relative de consigne qui serait en dehors de la plage de tolérance,
    c) et si un tel écart entre la position relative déterminée et la position relative de consigne en dehors de la plage de tolérance est constaté, la position relative des axes de rotation des rouleaux est modifiée ou corrigée de façon telle, notamment à l'aide dudit au moins un servomoteur (22, 23, 32, 33), que l'écart soit à nouveau à l'intérieur de la plage de tolérance.
  3. Procédé selon la revendication 1 ou la revendication 2, selon lequel
    a) pour la commande, la régulation ou la correction de la position relative des axes de rotation (A, B) des rouleaux (2, 3),
    b) au moins une position d'au moins un des axes de rotation des rouleaux
    b1) est commandée, régulée ou corrigée pour atteindre une position de consigne respectivement correspondante constante ou variable
    et/ou
    b2) est déterminée et est comparée avec la position de consigne correspondante constante ou variable et, en cas d'écart de la position de consigne en dehors de la plage de tolérance prédéterminée, est corrigée pour atteindre la position de consigne,
    c) le cas échéant, la (les) position(s) du (ou des) axe(s) de rotation de l'autre (ou des autres) rouleau(x) restant inchangée(s) ou sans déplacement par rapport à l'entourage ou est (ou sont) acceptée(s) ou sera (seront) acceptée(s).
  4. Procédé selon une ou plusieurs des revendications précédentes, selon lequel, pour la commande, la régulation ou la correction de la position relative des axes de rotation (A, B) des rouleaux (2, 3), chaque fois au moins deux distances des axes de rotation de deux rouleaux l'un de l'autre, d'une part, et des distances de consigne, d'autre part, sont prises, ces distances étant prévues ou déterminées de préférence à des côtés opposés, vu dans la direction de l'axe de rotation respectif.
  5. Procédé selon une ou plusieurs des revendications précédentes, selon lequel les rouleaux (2, 3) sont montés de façon à être aptes à être mis en rotation ou étant en rotation, dans deux dispositifs de palier respectifs (16, 17, 18, 19) et, pour l'ajustage de la position relative des axes de rotation, l'un par rapport à l'autre, des rouleaux, un des deux dispositifs de palier ou les deux dispositifs de palier d'au moins un des rouleaux est (ou sont) déplacé(s) à l'aide d'au moins un servomoteur (22, 23, 32, 33) et/ou selon lequel, pour la commande, la régulation ou la correction de la position relative pour atteindre la position relative de consigne, l'axe (ou les axes) de rotation du (ou des) rouleau(x) ou le(s) dispositif(s) de palier du (ou des) rouleau(x) est (ou sont) mû(s) au moins partiellement dans une direction de mouvement prédéterminée de manière linéaire, la direction de mouvement du mouvement linéaire étant de préférence sensiblement perpendiculaire aux axes de rotation des rouleaux et/ou est orientée sensiblement parallèle à la gravité et/ou est au moins partiellement tournée ou basculée.
  6. Procédé selon une ou plusieurs des revendications précédentes, selon lequel la position relative de consigne ou la (ou les) position(s) de consigne ou la (ou les) distance(s) de consigne des axes de rotation (A, B) des rouleaux (2, 3) sont ajustées ou choisies en fonction du matériau et/ou de la forme de la pièce à former ou de la forme souhaitée ou des dimensions souhaitées de la pièce formée, de préférence, la forme de la pièce étant mesurée avant la phase de formage et la position relative de consigne, la (ou les) position(s) de consigne ou la (ou les) distance(s) de consigne étant ajustée(s) en conséquence.
  7. Machine de laminage (1) pour la mise en oeuvre d'un procédé selon l'une quelconque des revendications précédentes, avec
    a) au moins deux rouleaux (2, 3) aptes à être mis en rotation ou étant en rotation autour d'un axe de rotation respectif (A, B), notamment aptes à être pourvus ou étant pourvus d'outils (20, 21 , 30, 31),
    b) au moins un entraînement en rotation (42, 43) pour mettre les rouleaux en rotation autour de leurs axes de rotation pendant au moins une phase de formage pour former une pièce apte à être disposée ou étant disposée entre les rouleaux,
    c) au moins un servomoteur (22, 23, 32, 33) pour ajuster la (ou les) position(s) de l'axe (ou des axes) de rotation d'un des rouleaux ou des deux rouleaux,
    d) un dispositif de contrôle (55) en liaison active avec chaque servomoteur pour commander, réguler ou corriger la position relative des axes de rotation des rouleaux à l'aide du (ou des) servomoteur(s) pour atteindre à position relative de consigne,
    e) un dispositif pour déterminer la position relative des axes de rotation, l'un par rapport à l'autre, des rouleaux, notamment pendant la phase de formage,
    f) le dispositif de contrôle étant en liaison active avec le dispositif pour déterminer la position relative des axes de rotation et
    f1) comparant la position relative des axes de rotation déterminée par ledit dispositif avec la position relative de consigne,
    f2) vérifiant s'il y a un écart entre la position relative déterminée des axes de rotation et la position relative de consigne qui serait en dehors de la plage de tolérance,
    f3) et si un tel écart entre la position relative déterminée et la position relative de consigne en dehors de la plage de tolérance est constaté, modifiant la position relative des axes de rotation des rouleaux, notamment à l'aide dudit au moins un servomoteur, de façon telle que l'écart soit à nouveau à l'intérieur de la plage de tolérance,
    g) le dispositif pour déterminer la position relative des axes de rotation, l'un par rapport à l'autre, des rouleaux comprenant quatre capteurs de distance (51, 52, 53, 54) pour mesurer les distances (w1, w2, w3, w4) des axes de rotation des rouleaux respectivement par rapport à l'axe médian comme mesure pour la (ou les) position(s) ou pour la distance des axes de rotation des rouleaux.
  8. Machine de laminage (1) selon la revendication 7, avec un dispositif de positionnement (60) avec deux éléments de positionnement (61, 62), mobiles l'un par rapport à l'autre, pour positionner la pièce dans la zone d'un axe médian (M) entre les deux rouleaux.
  9. Machine de laminage (1) selon la revendication 7 ou la revendication 8, dans laquelle à chaque rouleau (2, 3) est associé au moins un servomoteur correspondant (22, 23, 32, 33) pour un ajustage indépendant des positions des axes de rotation (A, B) des rouleaux, les servomoteurs étant disposés de préférence à des côtés opposés, l'un par rapport à l'autre, des rouleaux ou
    dans laquelle est associé aux rouleaux un servomoteur commun qui est apte à être accouplé ou qui est accouplé à chacun des rouleaux via une transmission respective, la transmission étant conformée de préférence de manière telle que les axes de rotation des deux rouleaux soient déplaçables, lors d'un entraînement par le servomoteur commun, simultanément, de préférence aussi avec la même vitesse, en direction d'une position de référence située entre les rouleaux, de préférence l'axe médian, ou en s'éloignant de celle-ci,
    et/ou
    dans laquelle au moins un servomoteur comprend au moins un moteur électrique de servomoteur et un dispositif de transmission d'effort apte à être accouplé ou étant accouplé au moteur de servomoteur, d'une part, et au rouleau correspondant, d'autre part, qui comporte notamment au moins un axe d'entraînement et/ou un engrenage à vis sans fin, pour transmettre l'effort d'entraînement ou le couple d'entraînement du moteur de servomoteur pour le déplacement des rouleaux.
  10. Machine de laminage (1) selon l'une quelconque des revendications 7 à 9, qui comprend
    a) pour chaque rouleau (2, 3) deux dispositifs de montage (12A, 12B, 13A, 13B) disposés respectivement sur des côtés frontaux du rouleau et étant aptes à être attachés ou étant attachés, de préférence de manière amovible, au rouleau et étant apte à tourner ou tournant avec celui-ci, et
    b) pour chaque dispositif de montage un dispositif de palier respectif (16, 17, 18, 19) dans lequel le dispositif de montage est monté tournant,
    c) les dispositifs de palier avec les dispositifs de montage d'au moins un rouleau montés dans les premiers étant aptes à être accouplés ou étant accouplés à un servomoteur (ou aux servomoteurs) (22, 23, 32, 33) associé(s) à ce rouleau et étant aptes à être mûs ou étant mûs à l'aide du (ou des) servomoteur(s) pour une modification de la position de l'axe de rotation du rouleau correspondant, de préférence, chaque dispositif de palier étant relié à un servomoteur respectif, et/ou
    d) qui comprend un dispositif de support qui n'est pas apte à être en rotation ou qui n'est pas en rotation ensemble avec les rouleaux, sur lequel ou par lequel le (ou les) servomoteur(s) est (ou sont) porté(s),
    e) le dispositif de support comprenant de préférence des zones de guidage pour guider les rouleaux ou les dispositifs de palier lors de leurs mouvements, le dispositif de support comprenant de préférence quatre éléments de support (6A, 6B, 6C, 6D) ayant notamment la forme de colonnes, un des dispositifs de palier d'un premier des deux rouleaux et un des dispositifs de palier du second des deux rouleaux étant disposés et guidés, de préférence de manière mobile, entre deux des quatre éléments de support et l'autre des dispositifs de palier du premier rouleau et l'autre dispositif de palier du second rouleau étant disposés et guidés, de préférence de manière mobile, entre les deux autres des quatre éléments de support, les éléments de support étant précontraints notamment à l'aide de tirants d'ancrage (7A, 7B, 7C, 7D) et d'écrous de préférence hydrauliques.
  11. Machine de laminage (1) selon une ou plusieurs des revendications 7 à 10, dans laquelle, en position relative de consigne, les axes de rotation (A, B) des rouleaux (2, 3) sont orientés sensiblement parallèlement l'un à l'autre et/ou sont disposés, vu dans la direction de la gravité, sensiblement l'un au-dessus de l'autre et/ou sont disposés perpendiculairement à la direction de la gravité.
  12. Machine de laminage (1) selon la revendication 7, dans laquelle le dispositif pour déterminer la position relative, de l'un par rapport à l'autre, des axes de rotation (A, B) des rouleaux (2, 3) comprend au moins un capteur sans contact et/ou un capteur d'ultrasons et/ou un capteur optique et/ou un capteur inductif et/ou un capteur magnétique.
  13. Machine de laminage (1) selon une ou plusieurs des revendications 7 à 12, qui est conformée comme machine de laminage transversale à profil ou à coin et/ou dans laquelle les outils (20, 21, 30 31) sur les rouleaux présentent, en section transversale, des profils ou formes en forme de coin ou de triangle et dont les dimensions radiales le long de leur pourtour augmentent dans une direction et/ou qui s'étendent en oblique par rapport à l'axe de rotation du rouleau correspondant.
EP07004135.5A 2003-03-04 2004-02-11 Procédé pour le formage d' une pièce et machine de laminage Expired - Lifetime EP1782896B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10309536 2003-03-04
DE10316249A DE10316249B4 (de) 2003-03-04 2003-04-08 Verfahren zum Umformen eines Werkstückes und Walzmaschine
EP20040002972 EP1454685B1 (fr) 2003-03-04 2004-02-11 Procédé pour former une pièce

Related Parent Applications (2)

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EP20040002972 Division-Into EP1454685B1 (fr) 2003-03-04 2004-02-11 Procédé pour former une pièce
EP20040002972 Division EP1454685B1 (fr) 2003-03-04 2004-02-11 Procédé pour former une pièce

Publications (3)

Publication Number Publication Date
EP1782896A2 EP1782896A2 (fr) 2007-05-09
EP1782896A3 EP1782896A3 (fr) 2014-02-12
EP1782896B1 true EP1782896B1 (fr) 2016-12-14

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EP07004135.5A Expired - Lifetime EP1782896B1 (fr) 2003-03-04 2004-02-11 Procédé pour le formage d' une pièce et machine de laminage

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017113503A1 (de) * 2017-06-20 2018-12-20 Profiroll Technologies Gmbh Umformmaschine und Druckumformverfahren
DE202017007601U1 (de) 2017-06-20 2023-07-03 Profiroll Technologies GmbH Umformmaschine
DE102020132399A1 (de) 2020-12-07 2022-06-09 Langenstein & Schemann Gmbh Querwalzvorrichtung, insbesondere Querkeilwalzvorrichtung, Verfahren zum Betrieb einer Querwalzvorrichtung und Steuereinrichtung
EP4011521A1 (fr) 2020-12-07 2022-06-15 Langenstein & Schemann GmbH Dispositif de laminage transversal, en particulier dispositif de laminage transversal de coin, procédé de fonctionnement d'un dispositif de laminage du type à clavette transversale et dispositif de commande
DE102020132399B4 (de) 2020-12-07 2024-05-16 Langenstein & Schemann Gmbh Querwalzvorrichtung, insbesondere Querkeilwalzvorrichtung, Verfahren zum Betrieb einer Querwalzvorrichtung und Steuereinrichtung

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CN100467146C (zh) 2009-03-11
EP2340898B1 (fr) 2016-11-02
DE10316249B4 (de) 2010-04-15
EP2340898A2 (fr) 2011-07-06
DE10319258A1 (de) 2004-09-23
DE10362061B4 (de) 2013-10-17
DE10316249A1 (de) 2004-09-23
CN1806953A (zh) 2006-07-26
EP2340898A3 (fr) 2013-11-27
EP1782896A2 (fr) 2007-05-09
DE10319258B4 (de) 2006-03-16
EP1782896A3 (fr) 2014-02-12

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