EP1454685A2 - Procédé pour former une pièce et machine de laminage - Google Patents

Procédé pour former une pièce et machine de laminage Download PDF

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Publication number
EP1454685A2
EP1454685A2 EP04002972A EP04002972A EP1454685A2 EP 1454685 A2 EP1454685 A2 EP 1454685A2 EP 04002972 A EP04002972 A EP 04002972A EP 04002972 A EP04002972 A EP 04002972A EP 1454685 A2 EP1454685 A2 EP 1454685A2
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EP
European Patent Office
Prior art keywords
rotation
rollers
axes
relative position
target
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
EP04002972A
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German (de)
English (en)
Other versions
EP1454685A3 (fr
EP1454685B1 (fr
Inventor
Günther Hofmann
Stelios Katsibardis
Siegfried Hausdörfer
Henry Zwilling
Günther Vogler
Herbert 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
Priority claimed from DE10316249A external-priority patent/DE10316249B4/de
Application filed by Langenstein and Schemann GmbH filed Critical Langenstein and Schemann GmbH
Priority to EP07004135.5A priority Critical patent/EP1782896B1/fr
Publication of EP1454685A2 publication Critical patent/EP1454685A2/fr
Publication of EP1454685A3 publication Critical patent/EP1454685A3/fr
Application granted granted Critical
Publication of EP1454685B1 publication Critical patent/EP1454685B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • 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

Definitions

  • the invention relates to a method for forming a workpiece and a rolling machine that is suitable for performing the method.
  • Intermediate form for forming workpieces from an initial shape into a desired one Intermediate form (semi-finished, preforming) or final form (finished product, Finished molds) are, among many other processes, also rolling processes known, which are counted among the pressure forming processes.
  • rolling the workpiece rolling stock
  • Tool profiles are used in the profile rolling process arranged on the circumference of the rollers, which corresponding to the generation Enable profiles in the workpiece.
  • rolling flat the cylindrical ones work or conical outer surfaces of the rollers directly on the workpiece.
  • the workpiece With regard to the relative movement of the tools or rollers on the one hand and on the other hand, the workpiece is divided into longitudinal rolls, Cross rolls and cross rolls.
  • the workpiece becomes vertical during longitudinal rolling to the axes of rotation of the rollers in a translatory movement and mostly without rotation through the space between the rollers (roller gap) emotional.
  • the workpiece does not move translationally during cross rolling regarding the rollers or their axes of rotation, but only rotates about its own axis, which is usually a major axis of inertia, in particular the axis of symmetry for a rotationally symmetrical workpiece, is.
  • cross rolling When combining both types of movement in longitudinal rolling and in Cross rolling is referred to as cross rolling.
  • the rollers are in the Usually at an angle to each other and to the workpiece, which is translational and rotational is moved.
  • Profile cross rolling machines in which two rolls are arranged on the outer circumference wedge-shaped profile tools around mutually parallel axes of rotation Rotating in the same direction is sometimes referred to as cross wedge rolling.
  • the tools have a wedge-shaped or triangular cross-section Geometry can and along the circumference in its axial Increase dimension in one direction and / or at an angle to the axis of rotation of the Rolls run.
  • cross wedge rollers or profile cross rollers allow a variety of forming of workpieces with high precision or dimensional accuracy.
  • the wedge-shaped Tools can have circumferential grooves and other tapering in the rotating workpiece. Due to the axial offset in the circumferential direction or the oblique arrangement of the tool wedges relative to The axis of rotation can, for example, change structures axially to the axis of rotation and tapering in the workpiece.
  • the axis of rotation can be axial in combination with the oblique arrangement running slopes and continuous transitions between two tapers different diameters can be generated in the workpiece.
  • the Wedge shape of the tools allows the production of fine structures through the Wedge outer edges or outer surfaces.
  • Cross wedge rollers are particularly suitable for the production of elongated, rotationally symmetrical workpieces with constrictions or elevations such as cams or ribs.
  • the forming pressure force and the forming temperature depend on that Material from which the workpiece is made and the requirements the dimensional accuracy and surface quality after forming.
  • the forming is usually carried out carried out during rolling at elevated temperatures in order to form required formability or flowability of the material to reach.
  • These temperatures particularly those that occur during forging With a so-called cold forming in the range of room temperature, for semi-hot forming between 550 ° C and 750 ° C and at a so-called hot forming are above 900 ° C.
  • Cross wedge rolling 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, which includes two positioning supports (so-called guidelines), in a starting position between the two rollers, which is usually corresponds to the geometric center or the center of the nip, positioned. The position of the rollers and their distance from each other will be fixed in advance. Now the positioning supports of the positioning device withdrawn so that the workpiece is free between the Rolls turns and kneaded into the desired shape between the tools becomes. After this rolling or kneading process and the corresponding completion the workpiece is the workpiece via a recess in the rotating rolling tool detected and ejected.
  • a positioning device which includes two positioning supports (so-called guidelines), in a starting position between the two rollers, which is usually corresponds to the geometric center or the center of the nip, positioned.
  • the position of the rollers and their distance from each other will be fixed in advance. Now the positioning supports of the
  • a cross wedge rolling machine for the transverse rolling of rotary bodies or flat workpieces with two work rolls rotating in the same direction of rotation, on the roll surfaces of which wedge tools are interchangeably arranged.
  • the wedge tools each have wedge-shaped or triangular-shaped, increasing from the roller shell to a height end position adapted to the workpiece to be manufactured, roughened by knurling or other means, and wedge-shaped smooth shaped surfaces with the same distance from the roller shell with calibration effect.
  • the wedge tools are designed as deformation segments and only run over a partial circumference of the associated roller surface. The surfaces and tools of the two work rolls facing each other move in opposite or opposite directions on the workpiece.
  • EP 1 256 399 A1 discloses a cross-rolling machine with two modules operated in parallel, each with two rollers rotating in the same direction of rotation, which have half-shell-shaped tools with radially projecting tool wedges on their circumferential surface, the reshaping of a workpiece only rotating around half the circumference of a pair of rollers requires. All four rollers are driven by only one drive motor via an intermediate gear unit and drive shaft.
  • the invention is based on the object, a new method for Forming workpieces and a new rolling machine with which this Procedure is feasible to specify.
  • the term "reshaping" means any transformation of the form of a Workpiece understood in a different form, as also described at the beginning, including preforms and preforms.
  • the axes of rotation of the Rolls are defined as geometric or mathematical axes in (Euclidean, three-dimensional) space around which the rollers rotate. Power transmission or mechanical axes are used in this application called waves.
  • the invention is based on the consideration of an automated or automatic (or: automatic) setting of the relative position of the axes of rotation of the Rolling the rolling machine to perform, generally at least an actuator is used. So it becomes particular according to the invention a control, regulation or correction is carried out, the control, Rule or correction variable the relative position of the axes of rotation of the rollers is.
  • the rolling machine accordingly contains a regulation or correction in an independently claimable variant or also in one claim 26 dependent embodiment in addition to the forming rollers, the rotary drive (s) and the at least one Actuator according to claim 17 also at least one device for Determining the relative position of the axes of rotation of the rollers to one another, in particular during the forming phase, and at least one control device, with the device for determining the relative position of the axes of rotation and is connected to each actuator or is operatively connected for correcting the relative position of the axes of rotation to a target relative position by means of the actuator (s).
  • control device compares then the determined values or signals for the relative position the axes of rotation with the target relative position and changes when one is determined inadmissible deviation from the target relative position the relative position of the roll axes via the actuator (s) until the deviation is again within a permissible tolerance range.
  • the relative position of the Axes of rotation of the rollers determined during the forming phase preferably at a given angle of rotation position of at least one of the rollers and / or a predetermined force load on the roller (s) or forming force.
  • a rotation angle sensor device can then be used Determining the roll rotation angle and / or a force sensor device be provided for determining the forming force.
  • the correction or adjustment of the relative position of the axes of rotation of the rollers can now in real time or directly during the forming phase, in particular in a continuous or in small time intervals regulation.
  • the target relative position corresponds then the desired roll position during the forming.
  • certain actual position of the relative position of the roll axes of rotation only after or also before forming and / or after ejecting the workpiece the space between the tools or the rollers and / or in a state of the rollers relieved of forming force to a target relative position corrected.
  • the target relative position is then possibly to a target position in the loaded state or adjusted during the forming phase. It can then a change in the relative position during the forming phase the at least one actuator is omitted.
  • the rollers are generally rotatable in two storage devices or stored rotating.
  • the positions of the axes of rotation of both rollers are preferably Correction or change of the relative position of their axes of rotation adjustable or changeable and can be regulated or corrected to the corresponding target positions.
  • the rollers can now either independently of each other, i.e. without a coupling of their movement, with their own actuators or dependent from each other, i.e. with a control or mechanical Coupling, adjustable or can be set. But it can also Movements and positions of the axes of rotation of both rollers with each other be coupled that the axes of rotation of both rollers simultaneously, preferably even at the same speed, on a between the Reference position lying on the rollers, preferably the central axis, to or are or can be moved away from it.
  • Such a synchronous Movement can be achieved with independent actuators common control or by mechanical coupling with Transmission (s) can be realized.
  • the relative position of the axes of rotation of the rollers a distance at one point or at least two distances at different points on the axes of rotation two rollers from each other or one or two distances from each axis of rotation determined to a central axis between the two rollers and this (r) determined distance / distances to correct the relative position of the Axes of rotation used to the target relative position.
  • everyone can determined distance compared with an associated target distance be and in the event of a deviation from the target distance outside a predetermined Tolerance range are corrected to the target distance. It is but also possible, from the individual distances (or positions) a geometric To determine the relative position of the axes of rotation mathematically and to correct.
  • the central axis (or: geometric center, central position) for recording the space provided between the rollers or the workpiece Tools can in particular be positioned by a positioning device of the workpiece between the rollers, with the central axis within a movement plane or on a movement axis two mutually movable positioning parts of the positioning device to hold the workpiece between the two positioning parts can.
  • This determination of the roll positions or the roll distance Relative to the workpiece has the advantage of being able to be relatively a reliable reference position to the workpiece is justified, which defines the position of the workpiece.
  • the distances the axes of rotation to the central axis are also clearly related to the distances between the axes of rotation.
  • the determination of the relative position of the axes of rotation to one another can therefore be carried out in only one dimension or projection onto a coordinate direction (spatial direction) or in two or even three dimensions or coordinate directions respectively.
  • the rolling machine For measuring the position (s) or the distance (s) of the rotary axes the rolling machine generally comprises a measuring device, which 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 touching sensor, for example a cable encoder.
  • a measuring device which 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 touching sensor, for example a cable encoder.
  • the distances between the storage facilities and the Positioning device can be measured, with the sensors on their outer sides can be attached.
  • the adjustable Roller (s) or their storage device (s) for correction or adjustment the relative position to the target relative position or for setting the position (s) their axis of rotation (s) or the distance between the axes of rotation of the rollers linear (or: rectilinear, translational) moved.
  • a linear, purely translational Movement is easy to implement in terms of drive technology.
  • the direction of movement linear movement or displacement of the roller (s) is preferred essentially perpendicular (or: orthogonal) to the axes of rotation of the rollers.
  • the movement can in particular in a vertical Direction, i.e. parallel to the gravitational force.
  • Another one too Movement type for the rollers can be advantageous, especially with asymmetrical ones thermal or mechanical changes in shape or volume in the rolling machine, for example a rotation or tilting movement or one composed of translational and rotary motion or along a given, non-rectilinear trajectory (or: Movement) of the rotary axes.
  • the movement of the The axes of rotation of the rollers can therefore be with one, two or even three degrees of freedom respectively.
  • the axes of rotation of the rolls are generally at least approximate set parallel position to each other and are usually too Main axes of inertia of the rolls, in particular cylinder or central axes with cylindrical rollers.
  • the Rollers and their axes of rotation seen in the direction of gravity, one above the other or arranged vertically to each other. But it is also a horizontal or inclined arrangement of the rollers and their axes of rotation possible.
  • the target relative position, target position (s) or target distances of the rotary axes the rollers depending on the material and / or shape (or: geometry) of the workpiece to be formed or of the desired shape or the desired dimensions of the workpiece after forming.
  • shape of the current workpiece in front of the Forming phase can be measured.
  • the parameters of a Workpiece can be entered in advance using a sample.
  • a first basic, particularly advantageous application of the invention which is also referred to below as the compensation mode, is based on the knowledge that during the forming process of a workpiece or a process with several successive forming processes in the Machining multiple work pieces expansions or contractions within the rolling machine, especially in the carrier device of the rolls or even within the rollers and tools themselves.
  • Caused these changes in shape and volume are particularly affected by the Forming forces (mechanical expansion or contraction) and by introducing the relative to hot or hot forming high temperature workpiece and the associated temporal and spatial temperature changes leading to thermal expansion or cause contraction.
  • These changes in shape or Volume in the rolling machine are therefore disturbances of the process and disadvantageously change the optimal or preset for the forming process Relative positions of the rollers or tools to each other.
  • a second basic application also referred to below as the forming mode is referred to and alternatively or in addition to the compensation mode can be provided based on the idea of control or regulation of the relative position of the axes of rotation of the rollers for adjustment the forming and / or the forming pressure on the workpiece.
  • the relative position, the position (s) or the distance or distances of the axes of rotation of the rollers during the or at least one forming phase and / or in a forming force Condition of the rollers to the target relative position or the target position (s) or controlled, regulated or corrected the target distance (s).
  • the target relative position or the target position (s) or the target distance or the target distances during the forming phase according to a generally depending on the angular or rotational position the rollers (position-controlled) or time (time-controlled), Course led that a desired, in particular position-dependent or temporal, course of the desired when the workpiece is formed Forming pressure or the forming of the workpiece adjusted is.
  • the variable roll position with the same at least one tool or the same surfaces of the rollers by setting different courses of the target relative position or target position (s) or the target distance or the target distances different transformations of the same in different forming phases or different workpieces are generated, in particular by reducing the distance of the axes of rotation during at least one Part of the forming phase.
  • the increasing radial Expansion of a wedge tool by reducing the roller gap at least partially replicated or replaced.
  • the default The course of the target relative position can be determined in advance and stored.
  • deviations in the tool from a given one can also occur Shape, for example due to dimensional tolerances or wear Adjusting the target relative position of the axes of rotation of the rollers at least approximately be balanced.
  • the forming process carried out with the method and the rolling machine can be a cold forming process, but is preferably a hot forming process or a hot forming process.
  • hot and hot forming is the correction of the roller positions according to the invention for Compensation or to compensate for thermal changes in particular advantageous.
  • the material of the workpiece can contain iron, for example iron itself or a steel, or a non-ferrous metallic Be material, for example aluminum or an aluminum alloy.
  • the rolling machine is as Profile cross rolling machine or cross wedge rolling machine, whose basic structure was described at the beginning.
  • the rollers therefore open and rotate corresponding profile or wedge tools in the same direction to each other, whereby the workpiece is only on its own axis rotates and is not transported translationally by the rollers.
  • the tools on the rollers are wedge-shaped or in particular in cross section triangular and take along the circumference in their radial dimension in one direction and / or run obliquely to the axis of rotation of the associated one Roller.
  • transverse rolling processes and machines can also be used in longitudinal rolling processes and machines, for example for stretch rolling.
  • 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 actuating movement the actuator is preferably in the range of a few tenths mm or even a few hundredths of a mm, preferably at least 0.1 mm, and / or a thousandth of the adjustment path or stroke. With that, too the tolerance range for the correction or deviation of the relative position the axes of rotation to the desired relative position selected in this order of magnitude become.
  • rollers with rotating or non-rotating carrier device or: roll stand, Roller frame
  • the actuator (s) are mounted or is or are worn.
  • each roller End faces of the roller connectable or connected to the roller and with the roller co-rotating or rotating holding devices provided.
  • the connection of the holding devices to the rollers is preferred detachable to allow changing of tools or rollers or to facilitate.
  • the storage devices with the holding devices stored in them at least a roller are connected to the actuator (s) assigned to this roller is coupled or can be coupled and via the actuator (s) movable for changing the position of the axis of rotation of the associated Roller.
  • each bearing device is each equipped with an actuator connected and the control device controls the actuators of both Bearing devices of a roller according to the desired movement the axis of rotation of the roller.
  • the carrier device has, in particular, guide areas to guide the storage facilities as they move.
  • the bearing devices can be guided by plain bearings or roller bearings get supported.
  • the rollers form with the associated ones Rotary drives each have a unit that is shared by the actuators is adjustable.
  • the actuators When moving a roller through the or the associated Actuator (s) thus remains the relative arrangement or position of the Rotary drive assigned to the roller unchanged or translation-invariant.
  • the carrier device comprises four support elements, between two of the four support elements one of the bearing devices of a first of the two rollers and one of the Storage facilities of the second of the two rollers and between the other two of the four support elements the other storage device of the first Roller and the other storage device of the second roller arranged and are preferably movably guided.
  • the actuators for the rollers are generally facing away from one another Sides of the rollers arranged to be between the rollers and laterally leaving space for the workpieces and other machine parts are.
  • the rolling machine shown in Figures 1 to 5 is a cross wedge roller or Cross wedge rolling machine designed and comprises a first work roll 2, the is rotatable or rotating about an axis of rotation A, and a second work roll 3, which is rotatable or rotating about an axis of rotation B.
  • the direction of rotation of both work rolls 2 and 3 is illustrated with the arrows shown and the same.
  • the axes of rotation A and B are essentially parallel to each other and perpendicular to the direction indicated by the arrow the 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 roller spacing.
  • the distance between the cylindrical outer surfaces of the two work rolls 2 and 3 clearly linked to the distance W via the roller diameter.
  • a between the two work rolls 2 and 3 parallel to the axes of rotation A and B running central axis defining the geometric center (or: Middle layer) is marked with M. With symmetrical position of the two axes of rotation A and B to the central axis M is the distance between the two axes of rotation A and B to the central axis M is W / 2.
  • the tools 20 and 21 are the first Work roll 2 and the tools 30 and 31 of the second work roll 3 each at an angle and at an angle to the respective axis of rotation A and B. arranged, the tools 20 and 21 of the work roll 2 with respect the central axis M axially in the substantially same positions are.
  • the tools 20 and 21 or 30 and 31 on the facing each other Inside closer together than on the outside facing away.
  • the tools 20 and 21 and 30 and 31 Preferably take the tools 20 and 21 and 30 and 31 in the circumferential direction also seen in their cross section, with the increase in cross section for tools 20 and 21 in the same direction of rotation or Orientation is and with the tools 30 and 31 of the second work roll 3 opposite or in the opposite direction to that of the tools 20 and 21 the first work roll 2.
  • Each of the two work rolls 2 and 3 is now on its two end faces Ends each with a shaft extension in two bearing devices 16 and 17 or 18 and 19 rotatably mounted about the respective axis of rotation A or B.
  • 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 central axis M (or also one in Area of the central axis M arranged, not shown in FIG 1 positioning device to position the workpiece), a second distance sensor 52 for measuring the distance w2 essentially between the bearing device 17 and the central axis M, a third distance sensor 53 for Measuring the distance w3 essentially between the bearing device 18 and the central axis M and a fourth distance sensor 54 for measuring of the distance w4 essentially between the bearing device 19 and the central axis M.
  • the distance sensors 51 to 54 can in particular be ultrasonic sensors, optical, magnetic or inductive sensors or others known distance sensors.
  • the bearing devices 16 to 19 are also each in their position or position adjustable, namely the bearing device 16 from an associated one Actuator 22, the bearing device 17 from an associated actuator 23 the bearing device 18 from an associated actuator 32 and the Bearing device 19 from an associated actuator 33.
  • the position (s) of the storage device (s) 16 and / or 17 or 18 and / or 19 is now the axis of rotation A or B of the work roll 2 or 3 in adjusted their position.
  • the axis of rotation A shifted in parallel.
  • the distances w1 and w2 both increase by the same amount.
  • a control device 55 is now provided which, preferably electrical, control lines connected to the actuators 22, 23, 32 and 33 is and via, generally electrical, measuring lines for transmission of the measurement signals or measurement values with the distance sensors 51, 52, 53 and 54 connected is.
  • the control device 55 now holds the axes of rotation A and B. 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 measuring the measured distances w1 to w4 with predetermined target distances, which are preferably all equal to a common target distance, compares and adjusts to the target distances or corrects them by actuation of the actuators 22, 23, 32 and / or 34.
  • the control device 55 contains preferably at least one digital microprocessor or signal processor and at least one memory with a stored control or Control algorithm for the processor as well as saved or re-storable Setpoints or command values for control or regulation.
  • 2 to 5 show an embodiment of a rolling machine 1 in different Representations.
  • 2 shows a longitudinal section along a the longitudinal direction of the rolling machine and the direction of gravity Cutting plane.
  • 3 and 4 show side views of the rolling machine on the two front or narrow sides.
  • the section of FIG 5 is in FIG 2, 3 and 4 marked with the arrows V-V.
  • Each work roll 2 and 3 is between two axially to the respective axis of rotation A and B on the end faces arranged holding devices 12A and 12B or 13A and 13B detachably and can be removed from the holding devices 12A and 12B and 13A and 13B are taken out in their unlocked state are used to replace tools 20 and 21 or 30 and 31 or entire work rolls 2 and 3 with the tools 20 and 21 or 30 and 31.
  • Each rotary drive 42 and 43 comprises an associated rotary drive motor 44 or 45 and a - not shown - rotary drive gear 46 or 47, for example one, in particular three-stage gear transmission for transmitting the Torque of the rotary drive motor 44 or 45 on the associated Work roll 2 or 3.
  • the holding devices 12A arranged on the left in FIG. 1 for the upper work roll 2 and 13A for the lower work roll 3 each set as Solid shafts (or hollow shafts) axially to the axes of rotation A or B.
  • the associated storage facilities 16 and 18 on and are not - with shown in more detail - rotary drive gear 46 and 47 of the associated Rotational drives 42 and 43 coupled or engaged.
  • An operation of the Rotary drive motors 44 and 45 thus lead to the transmission of a rotational movement via the rotary drive gear 46 or 47 to the holding device 12A or 13A and thus on the work roll 2 or 3 and the co-rotating second holding device 12B and 13B.
  • the rotary drive motors 44 and 45 are preferably permanent magnet motors, especially so-called torque motors.
  • the high dynamic or spin and the high torque of the torque motor allows a very dynamic control or regulation of the speed the rotating work rolls 2 and 3 in adaptation to the rolling process.
  • Each of the permanent magnet motors 44 and 45 becomes electronic, in particular controlled by a converter.
  • the rolling machine 1 further comprises a carrier device (or: a roll stand or frame) 6.
  • the carrier device 6 comprises four column-like Carrier elements 6A to 6D arranged in a rectangular arrangement are and on a common base plate 6E, which is supported on the floor 50 is mounted or fastened.
  • the carrier elements 6A to 6D run in a longitudinal direction vertically or vertically, i.e. parallel to the gravitational force G.
  • each of the carrier elements 6A to 6D there is an associated tie rod 7A to 7B arranged vertically in the longitudinal direction of the respective carrier element, which is attached to the bottom of the carrier plate 6E and at the top by means of an associated Lock nut not specified, preferably a hydraulic actuated lock nut, is biased.
  • an associated Lock nut not specified, preferably a hydraulic actuated lock nut, is biased.
  • the carrier elements 6A to 6D can be below a certain one Tension is set and stiffened. This leads to stiffening of the roll stand of the rolling machine 1.
  • the bearing device 16 is via a drive spindle (or: adjusting spindle) 26 adjustable in height from a first actuator 22 arranged above along a vertical, i.e. parallel to the direction of gravity G Axis E and the bearing device 17 is via a drive spindle 27 height-adjustable by a second actuator 23 arranged above along a vertical axis F.
  • the bearing device 18 is via a drive spindle 36 from a third actuator 32 arranged below adjustable in height along the vertical axis E and the bearing device 19 is via a drive spindle 37 from a fourth arranged below Actuator 33 adjustable in height along the vertical axis F.
  • Each actuator 22, 23, 32, 33 comprises a drive motor 24, 25, 34, 35, the one via a drive shaft 28, 29, 38, 39 and an unspecified Worm gear with high reduction the drive spindle 26, 27, 36, 37 and thus drives the bearing device 16, 17, 18, 19.
  • the maximum adjustment ranges or adjustment strokes of the actuators 22, 23, 32, 33 are typically 50 mm to 150 mm, the adjustment accuracy or adjustment steps are typically in adaptation to the thermal expansion in the Rolling machine a few 1/100 mm.
  • the drive motors 24, 25, 34, 35 can Be geared motors and / or three-phase asynchronous motors or synchronous motors and / or permanent magnet motors (e.g. servo motors) an electronic control and are used for high adjustment accuracy when adjusting only current impulses in the millisecond range.
  • the two bearing devices 16 and 18 are for their adjustment movement via guides 8B of the carrier element 6B and 8C of the carrier element 6C in or guided vertically on the two support elements 6B and 6C.
  • the two other bearing devices 17 and 19 are correspondingly for their adjustment movement via guides 8A of the carrier element 6A and 8D of the carrier element 6D vertically guided in or on the two carrier elements 6A and 6D.
  • work 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 or 43, the actuators attached to each of the two support devices 6 22 and 23 or 32 and 33 are suspended adjustable in height and on top of each other to or away from each other and in or on the carrier device 6 are movable.
  • the roller distance W between the axes of rotation A and B of the two Work rolls 2 and 3 or the tool distance w can be varied.
  • the three process phases form a work cycle.
  • a series production for the production of several formed Workpieces are usually several such work cycles in a row carried out.
  • the workpiece 10 is between the rollers 2 and 3 positioned.
  • the workpiece 10 is for this purpose according to FIG 3 by means of two Guides or positioning parts 61 and 62 of one shown only in FIG 3 Positioning device 60 in a position on the central axis M between brought 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, especially by means of rollers.
  • the positioning parts 61 and 62 can retract in this way in a long guide that the work roll 2 and / or 3 can be changed, without the positioning parts 61 and 62 having to be dismantled.
  • a second process phase the forming phase, the workpiece 10 captured by the tools of the work rolls 2 and 3 and between the rotating tools of the rollers.
  • the distances w1, w2, w3 and w4 are now used as a measure of the distances between the axes of rotation A and B and the central axis M measured.
  • the formed workpiece is removed again removed or ejected from the space between the rollers. It the distances w1 and w2 as well as w3 and w4 are now in particular with a common target distance compared, so that a parallel position the axis of rotation A and B is aimed for. If the deviation is too large The distances w1 to w4 from the target distance become the axes of rotation A and B changed its position in the manner described until the deviation eliminated or within a tolerance range.
  • the distances w1, w2, w3 and w4 can also during the forming phase in accordance with a predetermined angular position the roll (s) dependent or changing over time, to influence the forming of the workpiece.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)
  • Automatic Control Of Machine Tools (AREA)
EP20040002972 2003-03-04 2004-02-11 Procédé pour former une pièce Expired - Lifetime EP1454685B1 (fr)

Priority Applications (1)

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

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE10309536 2003-03-04
DE10309536 2003-03-04
DE10316249 2003-04-08
DE10316249A DE10316249B4 (de) 2003-03-04 2003-04-08 Verfahren zum Umformen eines Werkstückes und Walzmaschine

Related Child Applications (2)

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

Publications (3)

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EP1454685A2 true EP1454685A2 (fr) 2004-09-08
EP1454685A3 EP1454685A3 (fr) 2005-07-13
EP1454685B1 EP1454685B1 (fr) 2014-08-13

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2506105C2 (ru) * 2008-10-07 2014-02-10 Амрона Аг Система пожаротушения инертным газом для снижения опасности возгорания и тушения пожара в защищенном помещении
CN113787159A (zh) * 2021-07-26 2021-12-14 北京科技大学 一种铁道车辆车轴的楔横轧组合模具及其成形方法
CN115157035A (zh) * 2022-07-04 2022-10-11 日氟荣高分子材料(上海)有限公司 一种提高磨砂棍使用寿命的控制方法
CN116786729A (zh) * 2023-06-13 2023-09-22 山东亿金传动有限公司 一种新能源汽车空心轴的加工方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3358485A (en) * 1965-02-15 1967-12-19 United States Steel Corp Measuring and controlling gap between rolls
JPS5310023B2 (fr) * 1975-01-10 1978-04-11
US4044580A (en) * 1975-07-02 1977-08-30 Marotta Scientific Controls, Inc. Rolling mill gap sensor
US4186583A (en) * 1978-05-08 1980-02-05 Vyzkumny Ustav Tvarecich Stroju A Technologie Tvareni Apparatus for cross wedge rolling
GB8914011D0 (en) * 1989-06-19 1989-08-09 Davy Mckee Sheffield A rolling of metalwork pieces
JPH0671636B2 (ja) * 1989-11-09 1994-09-14 日本発条株式会社 板ばねの製造装置および板ばねの製造方法
RU2106223C1 (ru) * 1996-03-15 1998-03-10 Анатолий Федорович Косов Вакуумный стан поперечно-клиновой прокатки
EP0947258B1 (fr) * 1998-04-02 2006-08-16 Nissei Co. Ltd. Appareil de formage par roulage comportant des matrices cylindriques

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2506105C2 (ru) * 2008-10-07 2014-02-10 Амрона Аг Система пожаротушения инертным газом для снижения опасности возгорания и тушения пожара в защищенном помещении
CN113787159A (zh) * 2021-07-26 2021-12-14 北京科技大学 一种铁道车辆车轴的楔横轧组合模具及其成形方法
CN115157035A (zh) * 2022-07-04 2022-10-11 日氟荣高分子材料(上海)有限公司 一种提高磨砂棍使用寿命的控制方法
CN116786729A (zh) * 2023-06-13 2023-09-22 山东亿金传动有限公司 一种新能源汽车空心轴的加工方法

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Publication number Publication date
EP1454685A3 (fr) 2005-07-13
EP1454685B1 (fr) 2014-08-13

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