EP1782896A2 - 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

Info

Publication number
EP1782896A2
EP1782896A2 EP07004135A EP07004135A EP1782896A2 EP 1782896 A2 EP1782896 A2 EP 1782896A2 EP 07004135 A EP07004135 A EP 07004135A EP 07004135 A EP07004135 A EP 07004135A EP 1782896 A2 EP1782896 A2 EP 1782896A2
Authority
EP
European Patent Office
Prior art keywords
rollers
rotation
axes
relative position
roller
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.)
Granted
Application number
EP07004135A
Other languages
German (de)
English (en)
Other versions
EP1782896B1 (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

Links

Images

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 or warm forging a workpiece and a rolling machine, which is 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 rolls 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 machines or: profile cross 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.
  • 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 erosion 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 Criebeiebe (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 the shape (or: creometry) of the workpiece to be reshaped or of the desired shape or desired Dimensions of the workpiece adjusted after forming.
  • the shape of the current workpiece can be measured before the forming phase.
  • the 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 during 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, which 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 a fitting or correction step, if impermissible or intolerable deviations from a predetermined or optimal setpoint relative position of the rotary axes for the forming process 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 both Lütemcardien 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 Ttägeriata 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.
  • FIG. 1 a rolling machine with two rolls and a control device for monitoring and correcting the roll spacing in a schematic diagram
  • FIG. 2 a rolling machine with two rollers with associated independent rotary drives for rotating the rollers and actuators for adjusting the rollers in a longitudinal section
  • FIG. 3 the rolling machine according to FIG. 2 in a side view rotated by 90 ° to one side
  • FIG. 4 the rolling machine of FIG 2 in a rotated by 90 ° to the other side
  • FIG. 5 the rolling machine shown in FIG 2 to 4 in a transverse to the longitudinal section of FIG 2 made sectional view are each shown schematically.
  • Corresponding parts and sizes are provided in the Figures 1 to 5 with the same reference numerals.
  • the illustrated rolling machine according to FIG 1 to 5 is designed as a cross wedge 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 axis of rotation A and B, wherein the tools 20 and 21 the work roll 2 with respect to the central axis M are arranged axially in the substantially same positions.
  • the tools 20 and 21 or 30 and 31 are closer to one another on the inner side facing one another than on the outer side facing away from one another.
  • 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 essentially between the bearing device 16 and the center axis M (or else a positioning device, not shown in FIG. 1, for positioning the workpiece, arranged in the region of the center axis M), a second distance sensor 52 for measuring the distance w2 substantially between the bearing means 17 and the center axis M, a third distance sensor 53 for measuring the distance w3 substantially between the bearing means 18 and the center axis M and a fourth distance sensor 54 for measuring the distance w4 in FIG Substantially between the bearing means 19 and the central 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.
  • FIGS. 2 to 5 show an embodiment of a rolling machine 1 in various representations.
  • FIG. 2 shows a longitudinal section along a sectional plane containing the longitudinal direction of the rolling machine and the direction of gravity.
  • Figures 3 and 4 show side views of the rolling machine on the two front or narrow sides.
  • the section of FIG 5 is marked in Figures 2, 3 and 4 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, respectively, 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 an unspecified - 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.
  • the left in Figure 1 arranged holding devices 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 shown - rotary drive gears 46 and 47 of the associated rotary actuators 42 and 43 are 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 Rotationsanttiebsmotoren 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 is, 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. 3, the workpiece 10 is brought into a position on the central axis M between the work rolls 2 and 3 by means of two guide rulers or positioning parts 61 and 62 of a positioning device 60 shown only in FIG.
  • 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 reshaped workpiece is again removed or ejected from the space between the rollers.
  • the distances w1 and w2 and w3 and w4 are then compared, in particular, with a common desired distance, so that a parallel position of the axes of rotation A and B is desired becomes. Too large deviation of one of the distances w1 to w4 from the target distance, the axes of rotation A and B are changed in the beschziebenen manner in their position 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.
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)

Application Number Title Priority Date Filing Date
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 true EP1782896A2 (fr) 2007-05-09
EP1782896A3 EP1782896A3 (fr) 2014-02-12
EP1782896B1 EP1782896B1 (fr) 2016-12-14

Family

ID=32891870

Family Applications (2)

Application Number Title Priority Date Filing Date
EP11162489.6A Expired - Lifetime EP2340898B1 (fr) 2003-03-04 2004-01-29 Machine de laminage
EP07004135.5A Expired - Lifetime EP1782896B1 (fr) 2003-03-04 2004-02-11 Procédé pour le formage d' une pièce et machine de laminage

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP11162489.6A Expired - Lifetime EP2340898B1 (fr) 2003-03-04 2004-01-29 Machine de laminage

Country Status (3)

Country Link
EP (2) EP2340898B1 (fr)
CN (1) CN100467146C (fr)
DE (3) DE10316249B4 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109926449A (zh) * 2019-03-25 2019-06-25 浙江泽广泰精密科技有限公司 一种伺服式水平两辊轧制装置

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005022378B4 (de) 2005-05-13 2007-04-05 F.B. Lehmann Maschinenfabrik Gmbh Walzenreibmaschine
DE102005056649B3 (de) * 2005-11-25 2007-05-31 Langenstein & Schemann Gmbh Vorrichtung zum Halten von wenigstens zwei Walzen einer Walzmaschine und Walzmaschine
DE102010010269C5 (de) 2010-03-05 2023-11-16 Mercedes-Benz Group AG Verfahren zum Herstellen eines Statorträgers
DE102013100302B4 (de) 2013-01-11 2017-02-02 Langenstein & Schemann Gmbh Verfahren zum Schmieden, insbesondere Streckschmieden, von metallischen Werkstücken
DE102013108451B4 (de) 2013-08-06 2022-09-22 Langenstein & Schemann Gmbh Querkeilwalzmaschine
DE102014101151B4 (de) 2014-01-30 2023-08-10 Langenstein & Schemann Gmbh Verfahren zum Schmieden, insbesondere Streckschmieden, von metallischen Werkstücken
DE102014101150B4 (de) 2014-01-30 2024-02-01 Langenstein & Schemann Gmbh Verfahren zum Schmieden, insbesondere Streckschmieden, von metallischen Werkstücken
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
CN108246808A (zh) * 2018-01-31 2018-07-06 湖北环电磁装备工程技术有限公司 无框组合式永磁同步电机直驱的辊式楔横轧机
CN108555030A (zh) * 2018-01-31 2018-09-21 湖北环电磁装备工程技术有限公司 无框式永磁同步电机直驱的辊式楔横轧机
CN109261716B (zh) * 2018-09-29 2020-02-07 安阳复星合力新材料股份有限公司 一种冷轧带肋钢筋轧制工艺
DE102020132399A1 (de) 2020-12-07 2022-06-09 Langenstein & Schemann Gmbh Querwalzvorrichtung, insbesondere Querkeilwalzvorrichtung, Verfahren zum Betrieb einer Querwalzvorrichtung und Steuereinrichtung

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3208251A (en) * 1961-05-03 1965-09-28 Westinghouse Canada Ltd Rolling mill control system
US3358485A (en) * 1965-02-15 1967-12-19 United States Steel Corp Measuring and controlling gap between rolls
GB1329312A (en) * 1970-08-14 1973-09-05 British Steel Corp Taper rolling of metals
US4044580A (en) * 1975-07-02 1977-08-30 Marotta Scientific Controls, Inc. Rolling mill gap sensor
JPS58168452A (ja) * 1982-03-30 1983-10-04 Sumitomo Metal Ind Ltd 熱間鍛造における荒地取り方法および装置
JPS6082211A (ja) * 1983-10-04 1985-05-10 Sumitomo Metal Ind Ltd ロ−ル開度設定方法
JPH03151133A (ja) * 1989-11-09 1991-06-27 Nhk Spring Co Ltd 板ばねの製造装置および板ばねの製造方法
JPH03189006A (ja) * 1989-12-20 1991-08-19 Nkk Corp 厚板の走間板厚変更制御方法
JPH03226301A (ja) * 1990-01-31 1991-10-07 Kobe Steel Ltd リバースミルによる圧延板厚制御方法
DE10019175A1 (de) * 1999-05-12 2000-12-14 Hjb Rolling Mill Technology Gm Verfahren zum Herstellen eines bandförmigen Vormaterials aus Metall, insbesondere eines solchen Vormaterials welches in regelmäßig wiederkehrenden Abschnitten profiliert ist, und die Verwendung einer vorrichtung dafür

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2038783A (en) * 1932-10-27 1936-04-28 Schloemann Ag Rolling mill
CH425704A (de) * 1962-08-21 1966-12-15 Smeralovy Z Narodni Podnik Vorrichtung zur Verformung von Werkstücken durch Querwalzen
FR1426815A (fr) * 1965-03-24 1966-01-28 Zentrale Entwicklung Konstrukt Procédé de laminage transversal et longitudinal combiné
US3731510A (en) * 1970-06-25 1973-05-08 Mitsubishi Heavy Ind Ltd Cross-rolling machine having workpiece blank support
DE2736659A1 (de) * 1977-08-13 1979-02-22 Krupp Gmbh Walzenstrassenantriebssystem
US4457155A (en) * 1982-03-03 1984-07-03 White Consolidated Industries, Inc. Overhung bar rolling mill stand and two-axis gauge control system
ZA837038B (en) * 1982-10-26 1984-06-27 Kennecott Corp Hot mill hydraulic direct roll drive
LU86043A1 (de) * 1985-08-16 1987-03-06 Arbed Verfahren und vorrichtung zum einstellen des gleichlaufs eines walzenpaares
DE3619412A1 (de) * 1986-06-12 1987-12-17 Hoesch Stahl Ag Verfahren und vorrichtung zur walzspaltmessung und regelung
GB8822328D0 (en) * 1988-09-22 1988-10-26 Stoddard Sekers Int Pressure roller assembly
JPH02182339A (ja) * 1989-01-10 1990-07-17 Kobe Steel Ltd 圧延異形条材の製造方法
CN2060698U (zh) * 1990-02-15 1990-08-22 丹东五一八内燃机配件总厂 轧锻机
DE4435935C3 (de) * 1994-10-07 2003-11-06 Rieter Werke Haendle Verfahren zum Einstellen des Walzenspaltes eines Walzwerks und Walzwerk
DE19526071A1 (de) * 1995-07-18 1997-01-23 Rollwalztechnik Abele & Hoelti Verfahren zum Walzen von Profilen in ein Werkstück
DE19544988C2 (de) * 1995-12-02 2000-09-07 Anton Breyer Ohg Positioniersteuerung im Glättwerk
RU2106223C1 (ru) * 1996-03-15 1998-03-10 Анатолий Федорович Косов Вакуумный стан поперечно-клиновой прокатки
JP3507645B2 (ja) * 1997-02-26 2004-03-15 東芝Ｉｔコントロールシステム株式会社 圧延用モータ内蔵ロール装置及びこのロール装置を用いた圧延装置
DE69932765T2 (de) * 1998-04-02 2007-09-13 Nissei Co. Ltd., Ohtsuki Rundbacken-Formwalzvorrichtung
DE10122595C2 (de) * 2001-05-10 2003-05-15 Sms Eumuco Gmbh Querwalzmaschine

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3208251A (en) * 1961-05-03 1965-09-28 Westinghouse Canada Ltd Rolling mill control system
US3358485A (en) * 1965-02-15 1967-12-19 United States Steel Corp Measuring and controlling gap between rolls
GB1329312A (en) * 1970-08-14 1973-09-05 British Steel Corp Taper rolling of metals
US4044580A (en) * 1975-07-02 1977-08-30 Marotta Scientific Controls, Inc. Rolling mill gap sensor
JPS58168452A (ja) * 1982-03-30 1983-10-04 Sumitomo Metal Ind Ltd 熱間鍛造における荒地取り方法および装置
JPS6082211A (ja) * 1983-10-04 1985-05-10 Sumitomo Metal Ind Ltd ロ−ル開度設定方法
JPH03151133A (ja) * 1989-11-09 1991-06-27 Nhk Spring Co Ltd 板ばねの製造装置および板ばねの製造方法
JPH03189006A (ja) * 1989-12-20 1991-08-19 Nkk Corp 厚板の走間板厚変更制御方法
JPH03226301A (ja) * 1990-01-31 1991-10-07 Kobe Steel Ltd リバースミルによる圧延板厚制御方法
DE10019175A1 (de) * 1999-05-12 2000-12-14 Hjb Rolling Mill Technology Gm Verfahren zum Herstellen eines bandförmigen Vormaterials aus Metall, insbesondere eines solchen Vormaterials welches in regelmäßig wiederkehrenden Abschnitten profiliert ist, und die Verwendung einer vorrichtung dafür

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Week 199843 Thomson Scientific, London, GB; AN 1998-504398 XP002718229, & RU 2 106 223 C1 (KOSOV A F) 10. März 1998 (1998-03-10) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109926449A (zh) * 2019-03-25 2019-06-25 浙江泽广泰精密科技有限公司 一种伺服式水平两辊轧制装置

Also Published As

Publication number Publication date
DE10316249B4 (de) 2010-04-15
EP2340898A3 (fr) 2013-11-27
EP2340898A2 (fr) 2011-07-06
CN1806953A (zh) 2006-07-26
EP1782896B1 (fr) 2016-12-14
DE10362061B4 (de) 2013-10-17
EP2340898B1 (fr) 2016-11-02
DE10319258A1 (de) 2004-09-23
CN100467146C (zh) 2009-03-11
DE10316249A1 (de) 2004-09-23
EP1782896A3 (fr) 2014-02-12
DE10319258B4 (de) 2006-03-16

Similar Documents

Publication Publication Date Title
EP3266543B1 (fr) Procédé et installation destinés à la fabrication additive combinée à une mise en forme
DE69934251T2 (de) Nc-werkzeugmaschine und verfahren zur steuerung der nc-werkzeugmaschine
EP1782896B1 (fr) Procédé pour le formage d' une pièce et machine de laminage
DE69936407T2 (de) Verfahren zur Werkzeugeinstellung in einer Blechherstellungsmaschine
DE102005004236A1 (de) Drückverfahren und -vorrichtung
DE69932765T2 (de) Rundbacken-Formwalzvorrichtung
DE602004010293T2 (de) Verfahren zur erhöhung der steuergenauigkeit des weges eines produkts in einer richtmaschine mit ineinandergreifenden walzen und zur durchführung desselben verwendete richtanlage
DE10100868B4 (de) Kaltwalz-Umformmaschine und Werkzeug zum Herstellen von flanschförmigen Erzeugnissen bzw. von Flanschen aus einem zylindrischen Vorprodukt
EP1454684B1 (fr) Procédé pour le formage d' une pièce et machine de laminage
DE102013109218A1 (de) Kaltpilgerwalzanlage und Verfahren zum Umformen einer Luppe zu einem Rohr
EP1286794B2 (fr) Machine de laminage a froid
EP0275876A2 (fr) Procédé et appareil de dressage d'une pièce
DE2856525A1 (de) Verfahren und vorrichtung zur verarbeitung mit matrizenwalzen bzw. praegerollen
EP0602492B1 (fr) Laminoir à plusieurs cylindres
EP1985387A1 (fr) Machine à profiler avec plusieurs postes de formage successive et bâti pour une telle machine à profiler
DE102018113978B3 (de) Kaltwalzmaschine und Verfahren zur Erzeugung eines Profils an einem Werkstück
EP1454685B1 (fr) Procédé pour former une pièce
EP2489445B1 (fr) Dispositif doté d'une multitude d'installations de laminage à froid
DE102010060627B4 (de) Umformmaschine mit Stößelregelung
EP3159068B1 (fr) Banc de formage de pression/d'emboutissage et procede de pression/d'emboutissage
CH692382A5 (de) Profilrollmaschine mit Kraftrahmen.
WO1999036206A1 (fr) Procede et dispositif pour produire des corps creux par laminage transversal
DE102006006192A1 (de) Profilwalzmaschine mit Hydromotor
DE102018108733B4 (de) Antriebsvorrichtung für eine Presse oder Stanze und Presse oder Stanze
EP3481565A1 (fr) Machine de formage par étirage et procédé de mise en forme d'une pièce

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AC Divisional application: reference to earlier application

Ref document number: 1454685

Country of ref document: EP

Kind code of ref document: P

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): CZ DE FR IT

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

RIC1 Information provided on ipc code assigned before grant

Ipc: B21H 1/00 20060101ALI20140102BHEP

Ipc: B21B 37/58 20060101AFI20140102BHEP

Ipc: B21H 1/18 20060101ALI20140102BHEP

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): CZ DE FR IT

17P Request for examination filed

Effective date: 20140806

RBV Designated contracting states (corrected)

Designated state(s): CZ DE FR IT

AKX Designation fees paid

Designated state(s): CZ DE FR IT

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

RIC1 Information provided on ipc code assigned before grant

Ipc: B21B 31/08 20060101ALN20160428BHEP

Ipc: B21B 31/04 20060101ALN20160428BHEP

Ipc: B21B 37/46 20060101ALN20160428BHEP

Ipc: B21H 1/00 20060101ALI20160428BHEP

Ipc: B21B 37/58 20060101AFI20160428BHEP

Ipc: B21B 35/00 20060101ALN20160428BHEP

Ipc: B21B 35/14 20060101ALN20160428BHEP

Ipc: B21H 1/18 20060101ALI20160428BHEP

INTG Intention to grant announced

Effective date: 20160517

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AC Divisional application: reference to earlier application

Ref document number: 1454685

Country of ref document: EP

Kind code of ref document: P

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CZ DE FR IT

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502004015419

Country of ref document: DE

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 14

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502004015419

Country of ref document: DE

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20170915

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20230223

Year of fee payment: 20

Ref country code: CZ

Payment date: 20230213

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20230220

Year of fee payment: 20

Ref country code: DE

Payment date: 20230227

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 502004015419

Country of ref document: DE