EP3086901A2 - Dispositif de rectification de cylindre et procédé de rectification d'un cylindre - Google Patents

Dispositif de rectification de cylindre et procédé de rectification d'un cylindre

Info

Publication number
EP3086901A2
EP3086901A2 EP14823988.2A EP14823988A EP3086901A2 EP 3086901 A2 EP3086901 A2 EP 3086901A2 EP 14823988 A EP14823988 A EP 14823988A EP 3086901 A2 EP3086901 A2 EP 3086901A2
Authority
EP
European Patent Office
Prior art keywords
grinding
roll
roller
measured
tool
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
EP14823988.2A
Other languages
German (de)
English (en)
Other versions
EP3086901B1 (fr
EP3086901C0 (fr
Inventor
Stephan Draese
Jan Hendrik HOLTZ
Gernot NITZSCHE
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.)
Speira GmbH
Original Assignee
Hydro Aluminium Rolled Products 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 Hydro Aluminium Rolled Products GmbH filed Critical Hydro Aluminium Rolled Products GmbH
Publication of EP3086901A2 publication Critical patent/EP3086901A2/fr
Application granted granted Critical
Publication of EP3086901B1 publication Critical patent/EP3086901B1/fr
Publication of EP3086901C0 publication Critical patent/EP3086901C0/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
    • B24B49/02—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation according to the instantaneous size and required size of the workpiece acted upon, the measuring or gauging being continuous or intermittent
    • B24B49/04—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation according to the instantaneous size and required size of the workpiece acted upon, the measuring or gauging being continuous or intermittent involving measurement of the workpiece at the place of grinding during grinding operation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
    • B24B49/12—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation involving optical means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • B24B5/02—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work
    • B24B5/04—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work for grinding cylindrical surfaces externally
    • B24B5/045—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work for grinding cylindrical surfaces externally with the grinding wheel axis perpendicular to the workpiece axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • B24B5/36—Single-purpose machines or devices
    • B24B5/37—Single-purpose machines or devices for grinding rolls, e.g. barrel-shaped rolls

Definitions

  • the invention relates to a method for grinding a roller, in particular a working, intermediate or support roller, by means of a roll grinding device.
  • the invention relates to a roll grinding device for grinding a roller.
  • Rollers typically have a roll bale, to which roll journals connect axially on both sides.
  • the surface of the roll bale is referred to herein as the roll surface, since this is the surface of the roll, when rolling with the rolled product (at a work roll) or with the
  • Rolling surfaces of other rolls comes into contact.
  • the roll necks are used in dedicated bearings of the rolling mill, so that the roller is rotatably mounted.
  • One of the two roll necks typically has one
  • Terminal contour for example, a flat, for connection to a
  • the quality of rolled products depends directly on the nature of the rolls used to roll these products.
  • rollers therefore have besides the requirements of the roll material as well
  • the surface quality of the roll usually includes the simultaneous fulfillment of one or more criteria with respect to the
  • the surface finish of rolls plays a role, in particular, in the rolling of rolled products, which themselves are subject to high demands on their surface quality, since, for example, surface defects on the roll surface, such as scratches or patterns, can be transferred to the rolled product, so that it is either elaborately aftertreated or possibly even scrapped.
  • rolls of rolling mills in particular the working, intermediate and / or back-up rolls, are regularly provided therefor
  • Grinder grinding ground on the one hand to maintain the roll geometry and on the other hand, the surface quality of the roller or restore.
  • CNC Computerized Numerical Control
  • Partially offline and online measuring methods are used to make manual corrections while running
  • Grinding process interrupted at certain intervals, so that measurements on the roller can be performed. Depending on the results of the measurements, the grinding process can then be continued by the operating personnel with the same or with changed parameters.
  • this quality is assessed visually by the operators of the grinding systems during interruptions of the grinding process or after completion of the grinding process (offline) visually and / or with metrological aids or during the grinding process (online), so that the operating personnel then manually if necessary
  • the present invention has the object, a roll grinding or a method for grinding a roller for To provide, with which reliably a high surface quality of
  • This object is achieved at least partially by a method for grinding a roller, in particular a working, intermediate or support roller, by means of a roll grinding device, wherein a roller with a
  • Grinding tool of the roll grinding device is ground, in which during grinding at least one measured value of at least one measured on the surface quality of the roll measured variable is measured and in which during grinding at least one operating parameter of the roll grinding is set as a function of the measured variable.
  • the measured variable or a variable derived from the measured variable can be used in particular as a controlled variable of a control which is to be regulated to a predetermined or predefinable setpoint.
  • the measurement can be used to determine an actual value of the controlled variable, which is compared to the setpoint during the control.
  • the at least one operating parameter can preferably be used in the control as a manipulated variable, via which the control of the controlled variable takes place.
  • the value of the manipulated variable or of the operating parameter is determined in such a control depending on the deviation of the controlled variable from the desired value and thus dependent on the measured value of the measured variable.
  • Measured variable may preferably be in addition to detecting one or more of the geometry of the roll related measured variables take place.
  • at least one operating parameter of the roll grinding device can be set as a function of the measured quantity related to the surface quality of the roll and a measured quantity related to the geometry of the roll. In this way, at the same time the requirements for the geometry, as well as to the
  • Machine characteristics of the roll grinding device depends. As a result, in particular grinding times can be saved and / or incorrect grinding can be avoided, so that the overall result is cost savings.
  • Such a grinding tool preferably has an abrasive body, in particular in the form of a grinding wheel, which rotates during grinding with an adjustable grinding wheel speed.
  • a grinding wheel may for example consist of a matrix, preferably a synthetic resin matrix such as
  • Abrasive particles preferably corundum particles, boron nitride particles (CBN) and / or silicon carbide particles (SiC).
  • the roller preferably becomes about its axial axis during grinding
  • the roller surface can be processed with the grinding tool over its entire circumference.
  • the area of the roller currently being processed by the grinding tool or the grinding body is referred to as the grinding area.
  • the grinding tool is preferably parallel to the axial axis of the roller over substantially the entire width of the roller
  • Roll bale method so that the roll surface can be processed with the grinding tool over the entire axial extent of the roll bale.
  • the roller can also be moved in the axial direction relative to the grinding tool.
  • the relative velocity between the grinding tool and the roller during this movement is considered axial
  • At least one measured value of at least one measured quantity related to the surface quality of the roll is measured during the grinding.
  • a measured quantity related to the surface quality of the roll is understood to mean a measured variable which, in contrast to variables relating to the roll geometry, such as the bale contour or the roll diameter, has an effect on the quality of the roll
  • Roll surface is directed, preferably on the surface roughness, the surface gloss, the pattern freedom and / or the freedom of singular or recurrent defects of the roll surface.
  • the surface roughness preferably, too
  • the measurement of the at least one measured value takes place during grinding, ie while the roll surface is being ground with the grinding tool. In this way, the surface quality of the roller can be measured in the current grinding operation.
  • the at least one measured value is measured on at least one measuring range on the roller surface.
  • Roll grinding device preferably a measuring device, which
  • the measuring device may be an optical measuring device, such as a camera or another light detector, for example, which detects light reflected or scattered by the roller surface in the measuring range and calculates a measured value therefrom.
  • the location and size of the measuring range are in particular from that of the
  • Measuring device detected surface on the roll surface and of the
  • the measuring area is preferably arranged in the immediate vicinity behind the grinding area, preferably at a distance of not more than 30 cm, preferably not more than 20 cm, in particular not more than 10 cm.
  • An arrangement behind the grinding region is understood to mean that the measuring region is in a position into which a region of the roll surface passes after being processed in the grinding region. If, for example, the grinding tool moves from left to right (right to left) along the axial axis of the roller, then the measuring range is preferably arranged to the left (right) of the grinding tool.
  • a plurality of measured values are preferably measured, for example at specific intervals or in a continuous manner. In this way, the surface quality during grinding at different
  • Measuring ranges are determined on the roll surface and / or as a function of time.
  • the determined measured values are preferably assigned information about the position of the associated measuring range.
  • the determined measured values are preferably assigned information about the position of the associated measuring range.
  • Roll grinding device preferably means to determine the position of the measuring area on the roll surface. For example, with a first sensor the position of the measuring device or of the measuring range in the axial direction are determined (z-coordinate). Furthermore, with a second sensor, in particular an angle sensor, the angle of rotation of the roller or the position of the measuring range in the circumferential position can be determined (c-coordinate). A measured value measured in a measuring range can then be assigned the respective z and c coordinates and the measured value and the associated coordinates can be stored, for example, in a data matrix. In this way, the further processing of the measured value can take place depending on the position of the measuring area on the roll surface.
  • At least one operating parameter of the roll grinding device is set as a function of the measured variable during grinding. This is understood to mean that at least one operating parameter is set as a function of the at least one measured value of the measured variable measured during the grinding process.
  • This adjustment is preferably automatic, i. without human intervention such as by the operating personnel. That way you can
  • Operating parameters of the roll grinding device are controlled as a function of the measured values determined during grinding, so that a control of
  • one or more measured values of at least one measured variable relating to the roll geometry can additionally be measured and at least one operating parameter can be set as a function of this measured variable.
  • a measured variable may relate, for example, to the bale contour and / or to the roll diameter.
  • a roll grinding device for grinding a roll, in particular a working, intermediate or support roll, for example for aluminum cold rolling mills, with a roll support comprising two bearings, which are adapted for the rotatable mounting of the roll with a drive adapted to rotationally drive the roll at an adjustable roll speed, and a grinding tool adapted to receive and rotationally drive a grinding wheel with adjustable grinding wheel speed and to set the abrasive wheel to the roll, wherein the
  • Roll grinding device comprises a measuring device for measuring
  • Measured values of a measured quantity related to the surface quality of the roller are set up and the roll grinding device comprises a control device configured to control the device, wherein the control device is set up to cause the measurement of at least one measured value with the measuring device during grinding and at least one operating parameter of the roll grinding device, in particular the axial feed speed, the roller speed, the wheel speed and / or the employment of the
  • the setting of the grinding tool to the roller can be determined or adjusted, for example, via the drive current (for example armature current of the motor armature) or the drive power of the rotary drive of the grinding body.
  • the drive current for example armature current of the motor armature
  • the drive power of the rotary drive of the grinding body for example, via the drive current (for example armature current of the motor armature) or the drive power of the rotary drive of the grinding body.
  • the bearings of the roll holder are preferably designed to receive the roll neck of a roll.
  • the roll grinding device for example, each comprise an electric motor.
  • abrasive grinding wheels in particular come into question.
  • the position of the grinding tool or of the grinding body relative to the roller means the position and / or orientation of the grinding body relative to the roller, in particular the distance to the axial axis of the roller.
  • the diameter of the roll varies in the axial direction.
  • the distance of the grinding body to the axial axis of the roller is preferably adapted to the position of the grinding tool in the axial direction of grinding body to achieve a uniform machining of the entire roll surface.
  • the pressure with which the grinding body presses on the roll surface can also be set via the setting of the grinding body to the roll.
  • the roll grinding device comprises a measuring device that is set up for measuring measured values of a measured quantity related to the surface quality of the roll.
  • the measuring device is adapted to the
  • Measurements to be measured on at least one measuring range on the roll surface With regard to the measured values relating to the surface quality of the roller, its measurement and the resulting properties of the measuring device, reference is made to the above description of the method.
  • the measuring device is preferably designed such that the distance of the measuring device to
  • Roll surface is kept constant during grinding and / or that at least one axis of symmetry of the measuring device is at a fixed angle to the roll surface. In this way, the measurement accuracy or the
  • the roll grinding device further comprises one for controlling the
  • Roll grinding device configured control device.
  • This may, for example, be a control device having at least one microprocessor and preferably at least one memory connected to the microprocessor.
  • the control device is configured to cause the measuring of at least one measured value with the measuring device during grinding and at least one operating parameters of the roll grinding device, in particular the roller speed, the grinding wheel speed, the direction of rotation of the roller and / or the grinding wheel, the axial feed rate and / or Setting the grinding tool as a function of the measured variable.
  • the at least one operating parameter depends on the at least one measured value of the measured variable measured during grinding is set.
  • the roll grinding device described above is preferably used for
  • Embodiments will be described primarily for the roll grinding device or the method.
  • Control device configured to perform the method described above and / or an embodiment of the method described above or below.
  • the control device a
  • At least one measured value is at least one on the surface roughness of the roller and / or measured at least on a pattern formation on the roll surface measured variable, in particular with an optical measuring method.
  • R a, R q, R z, Rsk, Rdq, RPC in each case in accordance with DIN EN ISO 4287
  • S a, S q, S z, S S k, S dq, S ds each by ISO 25178
  • a q , A sk , A qm in each case in accordance with VDA 2009 "Angle-resolved scattered light measurement”
  • at least one measured value of one or more of the aforementioned measured variables can be measured several of the measured variables A q , A S k, A square , which by an optical measuring method, in particular by a scattered light or
  • Reflectivity measurement method can be determined. In particular, a continuous measurement of these variables is possible.
  • Typical target values for the surface roughness of rolls can be, for example, for the measured variable R a in the range of 0.01 ⁇ to 1 ⁇ .
  • the measured variables related to the surface roughness of the roll can be influenced or determined in particular by the axial feed rate, the setting of the grinding tool or by the speed ratio between the roll and the grinding body in the grinding area. For example, a reduction of the axial feed rate and / or the delivery can lead to lower roughness.
  • at least one of the operating parameters axial feed rate, adjustment of the grinding tool, roller speed, wheel speed, roller rotation and / or grinding direction as a function of at least one of the
  • the following measured variables can be used as measured quantities related to a pattern formation on the roll surface: measured variables which result from a Fourier transformation (eg by means of FFT) of an image acquisition from the Calculate roller surface or standard deviation of Aqm, in particular determined over a limited range in the axial direction. It has been found, for example, that patterns on the roll surface lead to a greater variation in the Aqm value, so that patterns on the roll surface can be recognized, for example, by the standard deviation of A qm exceeding a predetermined limit. Furthermore, a measured quantity related to the vibration state of the roll and / or the roll grinding device can also be used to monitor the formation of patterns on the roll surface. In particular, a deviation of the oscillation spectrum of a
  • predefined oscillation spectral range which corresponds, for example, to the range of normal oscillation spectrums during normal operation of the roll grinding device, which indicate a risk of pattern formation on the roll surface.
  • Step 1 or more measured values to be measured is preferably carried out depending on the material of the roll, the application in the rolling stand, i. a) roll stand type and / or b) roll type [e.g. Working, intermediate or back-up roll), the manufacturing step in which the roll is to be used (e.g., pre-stitch, inter-stitch or finish stitch) and / or specific properties of the roll product to be produced with the roll (e.g., thickness, gloss and / or roughness).
  • roll stand type and / or b) roll type e.g. Working, intermediate or back-up roll
  • the manufacturing step in which the roll is to be used e.g., pre-stitch, inter-stitch or finish stitch
  • specific properties of the roll product to be produced with the roll e.g., thickness, gloss and / or roughness.
  • the measurement is preferably carried out with an optical measuring method, for example by means of an optical scattered light or reflectivity measurement, in which light is radiated from a light source onto the roll surface and that of the
  • Roll surface reflected or scattered light with a light detector is preferably detected depending on the angle.
  • images of the roll surface can also be recorded with an image acquisition device and examined for recurring patterns. This can be done, for example, by a Fourier transformation of the image data captured by the camera.
  • the measured values can be determined without contact, so that on the one hand the roll surface and on the other hand the measuring device used for the measurement are not affected by the measurement. Furthermore, these optical measurements are possible in the current grinding process.
  • the following measuring methods or the use of measuring devices set up for this purpose are also used
  • this has a measuring device for measuring measured values of a on the
  • Roller surface related measured variable is set up, in particular an optical measuring device.
  • Measuring device adapted to each during grinding a in the
  • Substantially stationary position relative to the grinding tool exhibit.
  • Measured values of the at least one measured quantity related to the surface quality of the roller during grinding each in a substantially fixed spatial position relative to the grinding tool.
  • the measuring device may, for example, be motion-coupled with the grinding tool, so that the
  • Measuring device with a movement of the grinding tool moves accordingly becomes. In this way it can be achieved that the measured values recorded during grinding stand in a fixed relationship to the grinding process.
  • the measuring device can be arranged relative to the grinding tool so that a machined by the abrasive body surface portion of
  • Roll surface passes at a predetermined relative axial velocity of the grinding tool to the roller after a certain time in the measuring range of the measuring device.
  • Processing and the measurement on a surface portion of the roll surface usually simplifies the adjustment of the operating parameters as a function of the corresponding measured variable.
  • the relative spatial position of the measuring device or the measuring position relative to the grinding tool is preferably adapted to the machining direction in such a way that the measuring area is arranged behind the grinding area.
  • the roll grinding device has an adjustment mechanism which is set up to move the measuring device during a change in sign of the axial feed rate such that the measuring range is also arranged after the change of sign of the feed rate behind the grinding region.
  • the measuring range is arranged behind the grinding area, so that can be measured in the measuring area, the recently processed by the grinding tool surface.
  • the measuring device is preferably arranged in the region of the grinding tool, for example laterally, above or below the grinding tool.
  • the measuring device is less than 50 cm, preferably less than 35 cm, in particular less than 20 cm from the grinding tool spaced.
  • the measuring range on the roller surface detected during the measurement is preferably arranged in the region of the grinding tool processed area, preferably with a distance of less than 50 cm, preferably less than 35 cm, in particular less than 20 cm.
  • the determined measured values are in close spatial and temporal relationship to the area of the roll surface machined by the grinding tool, so that the measured values contain representative and timely information about the surface quality of the roll.
  • a lower latency of the control is achieved, so that against deviations between the targets and the measured values measured in a shorter time can be countered.
  • This embodiment is particularly advantageous for working, intermediate or back-up rolls of a rolling mill, since these rolls typically have bales of up to 2.50 m and a diameter of up to 1300 mm.
  • the processing of the entire roll surface by the grinding tool therefore takes a certain time, which may already be too long as a latency for the regulation of the operating parameters. Due to the stationary and / or local arrangement of
  • Measuring device to the grinding tool significantly shorter latencies in the control can be achieved.
  • the latter has a cleaning device which is set up to clean the measuring region detected by the measuring device before carrying out the measurement.
  • the roll surface area detected during the measurement is cleaned prior to the measurement.
  • a grinding emulsion is added to the roller, which the
  • roller surface covered Furthermore, other contaminants, such as sanding abraded particles of the roll material or abrasive article, can soil the roll surface.
  • the grinding emulsion or the further impurities can measure the roll surface
  • the measurement can be facilitated and the measurement errors reduced.
  • the cleaning is preferably achieved that the surface before measuring each having constant optical properties, which in particular do not vary from measurement to measurement.
  • a substantially residue-free roll surface or one with a uniform thin film, e.g. a thin coolant film or rolling oil film, covered roll surface achieved.
  • the squeegee for example, substantially plastic or rubber, preferably with a hardness in the range of 55 to 90 Shore-C (according to DIN EN ISO 868), exist so as not to damage the roll surface.
  • the squeegee is preferably inclined at an angle in the range of 15 ° and 45 ° in the direction of rotation of the roller, so that the roller surface moves through the roller rotation to an acute angle of the squeegee. At the aforementioned angle is at a contact point of the blade with the
  • Impurities are also blown off or sucked off, in particular by a designated blow-off or suction tool.
  • the side surface of the doctor blade facing the roller surface can also be chamfered with a corresponding angle.
  • the doctor blade can also be aligned perpendicular to the roll surface.
  • one or more of the following operating parameters are controlled as a function of the at least one measured variable: roller speed, wheel speed, direction of rotation of the roller and / or of the grinding wheel, axial feed rate, adjustment of the grinding tool to the roll or volume flow of a grinding emulsion used.
  • a controlled variable for the roughness of the roller in the axial direction in particular A q (z), regulated, preferably via one or more of the following control variables: the relative position of the grinding tool to the roller, preferably the delivery of the grinding tool, in particular the position a u and / or a e of a drive for fine adjustment of the employment of
  • a controlled variable for the average roughness of the roller is regulated, preferably via one or more of the following control variables: the relative position of the grinding tool to the roller, preferably the infeed of the grinding tool, in particular the position ae and / or u u a drive for coarse adjustment or fine adjustment of
  • the corresponding controlled variables may be used to roughness AQM principle, so AA qm (c, z) , A qm (z), ⁇ qm etc.
  • At least one measured value of a measured variable related to the vibration state of the roller and / or the roll grinding device is measured and at least one operating parameter of the roll grinding device is set as a function of this measured variable. It has been found that, depending on the operating parameters of the grinding process, such. B. the rolling speed or the grinding wheel speed, natural frequencies of the roller or the roll grinding device can be excited, so that there are excessive vibrations of the roller or the
  • Roll grinding device can come. This can lead to the formation of patterns on the roll surface during grinding and thus to a deterioration of the surface quality of the roll.
  • Vibration state of the roll or the Walzenschleifvorraum and the corresponding control of the operating parameters for example by changing the roller speed and / or the grinding wheel speed, the vibrations and thus the risk of pattern formation can be reduced overall.
  • Roll grinding device or parts thereof, for example
  • Acceleration sensors are used in different directions.
  • the vibration states of the following components of a roll grinding device can be measured: the vibration state of the
  • Swivel head i. of the movable relative to the roller part of the
  • the vibration state of the grinding wheel drive and / or the vibration state of a setting stick i. a provided for supporting a roll neck of the roller component.
  • Acceleration sensors are arranged for example in or on the spindle.
  • the data of a grinding wheel balancing unit integrated in the grinding tool can also be used directly in the analysis of the
  • Vibration state are included.
  • the latter has a temperature sensor which is set up to determine a temperature of at least one of the two bearings (storage temperature), and the control device is set up to set at least one operating parameter of the roll grinding device as a function of the storage temperature.
  • the roll is rotatably mounted in at least one bearing of the roll grinding device, at least one measured value of the storage temperature is measured during grinding and at least one operating parameter of the roll grinding device is set as a function of the storage temperature.
  • Lubricant bearings are also roll grinding devices with so-called minimum quantity cooling lubrication systems (oil mist lubrication) for the roller bearings.
  • a regulation can be applied to the bearings via the lubrication amount, the valve timing, the
  • Valve opening time and / or the amount of air done takes place in several transitions of the grinding tool via the roll surface.
  • a transition of the grinding tool over the roller surface is understood as a method step in which essentially the entire
  • Roll surface is processed by the grinding tool. For example, if the roller rotates during grinding, a portion of the roller surface can be machined over the entire circumference of the roller by the grinding tool. In addition, if the rolling tool is moved relative to the roll in the axial direction over the entire axial extension of the roll bale, then the entire roll surface of the roll can be processed by the grinding tool bit by bit. In such a typical motion configuration, under a transition of the
  • the operating parameters of Roll grinding device or its permissible working or variation ranges can be specified individually for the individual transitions or for groups of transitions. It is conceivable, for example, that operating parameters for a first group of transitions are set in order to fulfill preselections with regard to the roll geometry, ie in particular with regard to the bale contour and / or the roll diameter (pre-grinding), and operating parameters are set for a second group of transitions, primarily to fulfill specifications regarding the surface quality (finish grinding). According to a further embodiment of the method, the grinding takes place
  • Roller in multiple transitions of the grinding tool across the roller surface and the total number of transitions is set during grinding as a function of the at least one measured quantity related to the surface finish of the roller. It has been found that, depending on the nature of the abrasive tool and the roller, the number of transitions required to achieve the desired surface finish of the roller may vary. For example, in a first roller, a larger number of transitions may be required to achieve a certain surface finish than a second roller. With the embodiment described above, the number of transitions required during the process can be determined dynamically and adjusted accordingly by detecting the surface finish of the roller. As a result, for example, superfluous transitions can be avoided and thus the number of transitions can be minimized. In this way, the roll grinding can be reduced during grinding, so that the life of the rollers, in particular the number of possible grinding processes on the roller, is increased.
  • the grinding of the roller takes place on the basis of a predetermined grinding program with a plurality of successive grinding steps, wherein each grinding step takes place at least one transition of the
  • a surface characteristic value is determined as a function of the at least one measured quantity related to the surface quality of the roller and, depending on the surface characteristic value, a jump takes place within the grinding program to an earlier or later grinding step.
  • the surface characteristic value may be a value calculated from one or more measured variables related to the surface quality of the roller.
  • the grinding of the roll is carried out in the previous grinding step or in the previous one, depending on the change in a measurement or controlled variable related to the surface roughness of the roll
  • Walzene property may have a different Einlättungs the roll surface.
  • Surface roughness of the roll related measured or controlled variable in the previous grinding step or in the previous grinding steps can in particular a
  • a grinding program includes various grinding steps such as pre-grinding and finish grinding. Pre-grinding or
  • Finished grinding can each include a plurality of grinding steps.
  • the operating parameters are preferably adjusted depending on the respective grinding step or of the respective transition, that certain properties of the roller are achieved with the grinding step, such as a certain
  • Roll geometry during pre-grinding and a certain surface finish during finish grinding may be due to disturbances, for example
  • the requirements on the surface quality preferably taking into account the influences of the roll grinding device, in particular the grinding tool, the roller and / or the auxiliary and lubricants used in the grinding process.
  • the roll grinding device in particular the grinding tool, the roller and / or the auxiliary and lubricants used in the grinding process.
  • a measured quantity related to a pattern formation on the roll surface comprises the presence of a pattern, in particular a feed pattern indicates the roll surface, although the target roughness of the roll surface has already been reached, especially if no further transition is provided.
  • the grinding step to be jumped back to is preferably selected depending on the type of a pattern recognized on the roller surface.
  • a feed pattern for example, a jump to a first
  • Feed pattern becomes a spiral pattern on the roll surface
  • the grinding of the roller takes place in several transitions of the grinding tool via the roller surface and at least one operating parameter of a transition is set as a function of at least one measured value during an earlier transition. For example, by capturing a metric during a transition, it is possible to determine how far it reached that transition
  • the grinding of the roll takes place in several transitions of the grinding tool via the roll surface and during a transition, at least one operating parameter, preferably one of the Operating parameters roller speed, wheel speed, direction of rotation of the roller and / or the grinding wheel, axial feed rate, adjustment of the grinding tool to the roller and / or flow rate of a used
  • Operating parameters are performed within predetermined limits. It has been found that through these targeted variations, regular patterns caused, for example, by unintended operating parameter variations or
  • Vibrations of the roller or the roll grinding device can be caused, reduced or even avoided.
  • the variation of the at least one operating parameter takes place within predefined limits, since a grinding process outside these limits could cause damage to the roll surface or at least a deterioration in the surface quality of the roll.
  • the predetermined limits for the variation of the at least one operating parameter are preferably set as a function of the transition. So can
  • the variation of the at least one operating parameter can regularly,
  • the variation of the at least one operating parameter takes place in a continuously differentiable manner.
  • the amplitude and / or frequencies of the variations and / or their shape and / or frequency preferably as a function of
  • Vibration spectrum F m regulated, preferably via one or more of the following control variables: the frequency and / or the amplitude of a variation of one or more operating parameters, in particular the frequency f vw and / or the amplitude A w of a variation of the rotational speed v w of Roller and / or the frequency f vc and / or the amplitude A vc of a variation of the rotational speed v c of an abrasive body of the grinding tool, and / or a dependent of one or more of these control variables operating parameters. It has been shown that these manipulated variables are well suited to the vibration state of the
  • the variation of the at least one operating parameter can also be set independently of measured values. Accordingly, the above is described
  • Task according to the invention further at least partially solved by a method for grinding a roller, in particular a working, intermediate or support roller, by means of a roll grinding device, wherein a roller with a
  • Grinding tool of the roll grinding device is ground, in which the grinding of the roller takes place in several transitions of the grinding tool on the roll surface and in which during a transition at least one operating parameter, preferably one of the operating parameters roller speed, wheel speed, direction of rotation of the roller and / or the grinding body, axial
  • Feed rate, adjustment of the grinding tool to the roller and / or flow rate of a grinding emulsion used, is varied within predetermined limits.
  • a roll grinding device for grinding a roller in particular a working, intermediate or support roller, for example Aluminum cold rolling mills, comprising a roller support comprising two bearings adapted for rotatably supporting the roller, having a drive for guiding the roller
  • the rotary drive of the roll is set with adjustable roll speed and with a grinding tool, which is adapted for receiving and for rotational driving a grinding wheel with adjustable grinding wheel speed and for adjusting the grinding wheel to the roller, wherein the roll grinding device comprises a device arranged for controlling the control device, wherein the
  • Control device is set up, at least one operating parameter, preferably one of the operating parameters roller speed, wheel speed, direction of rotation of the roller and / or the grinding wheel, axial
  • the variation of the at least one operating parameter is in particular independent of a regulation of the grinding process by means of a controlled variable.
  • the roll grinding device can in particular also a plurality of
  • Measuring device for measuring a measured value for the roughness, a second
  • Measuring device for measuring a measured quantity for samples on the roll surface and a third measuring device, for example a mechanical probe, for
  • Mechanical button can basically also be used to
  • Roll grinding device is set as a function of the measured variable.
  • Patterning measured on the roll surface measured variable is measured, in particular with an optical measuring method.
  • Method according to embodiment 1 or 2 is a method according to embodiment 1 or 2,
  • At least one measured value of a measured variable related to the vibration state of the roll and / or the roll grinding device is measured and at least one operating parameter of the roll grinding device is set as a function of this measured variable.
  • roller is rotatably mounted in at least one bearing of the roll grinding device, that at least one measured value of the storage temperature is measured during grinding, and that at least one operating parameter of the roll grinding device is set as a function of the storage temperature.
  • each grinding step comprising at least one transition of the grinding tool via the roller surface with associated operating parameters, during grinding determining a surface characteristic as a function of the at least one measured quantity related to the surface quality of the roller and that depends on the surface characteristic within the
  • Abrasive speed, direction of rotation of the roller and / or the grinding body, axial feed rate, relative position of the grinding tool to the roller, in particular delivery of the grinding tool, or volume flow of a grinding emulsion used is varied within predetermined limits.
  • a controlled variable for the pattern formation on the roll surface in which a controlled variable for the pattern formation on the roll surface, in particular for the local roughness deviation AA q (c, z), is regulated, preferably via one or more of the following control variables: the power of the drive for an abrasive body of the grinding tool, in particular the Grinding current I (c, z) or the change of grinding current AI (c, z), the pressure of the grinding wheel on the roller, the relative position of the wheel Grinding tool to the roller, preferably the delivery of the grinding tool, in particular the position a u and / or a e of a drive for the fine adjustment of the employment of the grinding tool, and / or one of one or more of these manipulated variables dependent operating parameters.
  • a controlled variable for the roughness of the roller in the axial direction in which a controlled variable for the roughness of the roller in the axial direction, in particular A q (z), is controlled, preferably via one or more of the following control variables: the relative position of the grinding tool to the roller, preferably the delivery of the grinding tool, in particular the Position a e and / or u u of a drive for coarse adjustment and / or for fine adjustment of the employment of the grinding tool, and / or an operating parameter dependent on this manipulated variable. 13.
  • a controlled variable for the average roughness of the roll in particular ⁇ q , is regulated, preferably via one or more of the following control variables: the relative position of the grinding tool to the roll,
  • the delivery of the grinding tool in particular the position a e of a drive for coarse adjustment of the setting of the grinding tool, the rotational speed v w of the roller, the feed rate Vf a of the roller or the grinding tool in the axial direction, the
  • Circulation speed v c of an abrasive body of the grinding tool and / or one of one or more of these manipulated variables dependent
  • Roll grinding device in particular the vibration spectrum F m , is regulated, preferably via one or more of the following
  • Manipulated variables the frequency and / or the amplitude of a variation of one or a plurality of operating parameters, in particular the frequency f vw and / or the amplitude A vw of a variation of the rotational speed v w of the roller and / or the frequency f vc and / or the amplitude A vc of a variation of the rotational speed v c of an abrasive body of the grinding tool, and / or one of one or more of these manipulated variables dependent operating parameters.
  • Roll grinding device for grinding a roll in particular a working, intermediate or support roll, for example for aluminum cold rolling mills, arranged for execution or comprising means for carrying out the method according to one of embodiments 1 to 14.
  • roller holder comprising two bearings adapted for rotatably supporting the roller
  • a grinding tool adapted to receive and rotationally drive a grinding wheel with adjustable grinding wheel speed and to set the grinding wheel to the roller
  • the roll grinding device comprises a measuring device which is set up to measure measured values of a measured quantity related to the surface quality of the roll, and
  • the roll grinding device comprises a control device set up for controlling the device, wherein the control device is set up to measure at least one during grinding
  • Feed rate and / or the adjustment of the grinding tool to the roller to set as a function of the measured variable.
  • control device is set up to carry out a method according to one of the embodiments 1 to 14.
  • the measuring device is designed to have a substantially stationary position relative to the grinding tool during grinding.
  • the measuring device is set up in such a way that the measuring area is arranged behind the grinding area independently of the grinding direction, so that a surface area processed by the grinding tool passes into the measuring area substantially immediately after the grinding.
  • the roll grinding device has a cleaning device which is set up to clean the measuring range detected by the measuring device before carrying out the measurement.
  • Scattered light measurement on a roll surface a diagram with an exemplary, angle-dependent intensity distribution of the reflectivity or scattered light measurement from FIG. 4 a, a schematic illustration of an image of a roll surface captured by a camera,
  • FIG. 5b shows a diagram with an example result of a
  • Figure 6 is a diagrammatic representation of a grinding program
  • FIG. 7 shows a diagram with an exemplary variation of a
  • FIGS. 1 to 3 show a roll grinding apparatus 10 for grinding a roll 20.
  • FIG. 1 shows a perspective illustration
  • FIG schematic representation in plan view and Figure 3 is a schematic representation in
  • FIG. 1 shows a detailed representation of the roll grinding device 10.
  • the roller 20 may be, for example, a working, intermediate or support roller of an aluminum cold rolling mill. Such rolls have a roll bale 22 with the roll surface 24 and lateral roll necks 26, 28, with which the roll 20 for the rolling operation in corresponding bearings of a
  • Roll stand can be rotatably mounted.
  • the roll bale 22 has
  • the roll grinding device 10 comprises a roll holder 30 with two bearings 32, 34, which are arranged for the rotatable mounting of the roller 20. Instead of supporting the roller 20 in the bearings 32, 34, the roller can be stored on bearings designed as setting rods (35 in Fig. 1). Such a setter preferably comprises a hydraulic grinding bearing for supporting a roll neck.
  • the roller holder 30 has a drive (not shown), which is arranged for the rotational drive of the roller 20 with adjustable roller speed (arrow 36).
  • the roll grinding apparatus 10 furthermore has a grinding tool 40 in which an abrasive body 42 designed as a grinding wheel is rotatably mounted.
  • the grinding tool 40 has a rotary drive (not shown) for driving the grinding wheel 42 with adjustable grinding wheel speed (arrow 44).
  • the employment of the grinding tool 40 to the roller 20 can be adjusted by means of a drive designed for this purpose (arrow 46).
  • the drive may include a coarse and fine adjustment drive.
  • the pressure with which the grinding body 42 presses on the roller surface 24 can also be adjusted by means of this drive.
  • the grinding tool 40 can be moved parallel to the axial direction of the roll 20 over the entire width of the roll bale 22 by means of a drive (arrow 48) designed for this purpose.
  • the bearing 34 can be moved on a translation device 50 in the axial direction of the roller 20 (see arrow 52) in order to be able to clamp the roller 20 in the bearings 32, 34 or in order to be able to adapt the spacing of the bearings 32, 34 to different roller lengths ,
  • the one-time operation of the grinding tool 40 with the rotating roll 20 is referred to as a transition of the grinding tool 40 via the roll surface 24.
  • a grinding process includes a plurality of such transitions.
  • the device 10 has a feed line 60 (only in FIGS. 2 and 3)
  • the device 10 furthermore has a measuring device 70 (shown only in FIGS. 2 and 3), which is set up to measure measured values of a measured variable related to the surface quality of the roller 20 in a measuring region 72 on the roller surface 24.
  • the measuring device 70 may be, for example, an optical measuring device, for example a measuring device for an optical reflectivity or scattered-light measuring method. With such a method, in particular the roughness of the roll surface can be determined.
  • Measuring device 70 may alternatively or additionally also for the determination of
  • Patterns on the roll surface 24 may be formed.
  • the first and second rolls surface 24 may be formed.
  • Measuring device 70 for example, have an image acquisition system, which receives an image of the roller surface 24 in the measuring range 72, the detected image data of a Fourier transform undergoes and periodically recurring structures on the roller surface 24 based on excessive frequencies in the Fourier spectrum.
  • the measuring device 70 is set up so that it essentially has a stationary position relative to the grinding tool 40.
  • the measuring device 70 is set up so that it essentially has a stationary position relative to the grinding tool 40.
  • Measuring device 70 to be fixedly coupled to the grinding tool 40, so that the measuring device 70 moves along with movement of the grinding tool 40 parallel to the axial direction of the roller 20.
  • a separate drive 73 may be provided with which the measuring device 70 is moved along with the movement of the grinding tool 40 parallel to the axial direction of the roller 20 accordingly.
  • the measuring device 70 is set up in such a way that the measuring region 72 is arranged behind the grinding region, independently of the grinding direction, so that a surface region processed by the grinding tool 40
  • the measuring device 70 can be moved be formed to be able to be arranged depending on the grinding direction on one or the other side of the grinding tool 40.
  • the measuring device 70 may also comprise two detection systems, one of which is arranged on one side and the other on the other side of the grinding tool 40.
  • the measuring device 70 To improve the measurements by the measuring device 70, the
  • Roll grinding device further comprises a doctor blade 74 (shown only in Figures 2 and 3), with the guided from the feed line 60 to the roller 20
  • the measurement carried out in this way is not disturbed or at least to a lesser extent by absorption or diffuse scattering due to the grinding emulsion.
  • the squeegee 74 may be arranged parallel to the axial axis of the roll 20 or (as in Fig. 2) also at an angle thereto. Furthermore, the squeegee 74 for
  • Improvement of the cleaning result be inclined at an angle in the range of 15 ° and 45 ° in the direction of rotation of the roller.
  • the squeegee plane would then be inclined in the direction of rotation by an angle between 15 ° and 45 ° with respect to a plane perpendicular to the roller surface 24, so that a direction of rotation of the roller 20 (arrow 36) pointing toward the squeegee 74 moves due to the direction of rotation of the roller 20 shown in FIG Range of the roll surface 24 to an acute angle of the doctor blade 74 (analogous to a positive rake angle in a chip tool) zuliefe.
  • the roll grinding device 10 further comprises a control device 80 (shown only in FIG. 2) which is set up to control the roll grinding device 10.
  • the control device 80 is configured to cause the measurement of at least one measured value with the measuring device 70 during grinding, ie while the roll surface 24 is being processed by the grinding wheel 42. In this way, the surface finish of the roll 20 can be examined during the ongoing grinding process.
  • the control device 80 is adapted to at least one operating parameter of the roll grinding device 10, in particular the
  • Roller speed 36, the wheel speed 44 and / or the setting of the grinding tool to the roller as a function of the measured quantity measured, i. depending on the corresponding one or more measured during grinding
  • the grinding process can be controlled automatically during operation via the surface quality of the roller 20 determined online, so that overall better or reliably adjustable surface qualities of the roller can be achieved with this method.
  • the device 10 may further comprise a temperature sensor 90 (shown only in Figure 2), with which the storage temperature of the bearing 32, for example, can be measured.
  • the control device 80 is adapted to set the operating parameters of the grinding process as a function of this storage temperature.
  • FIGS. 4a-b illustrate a reflectivity or scattered light measurement on the roller surface 24 for measuring a measured value of a measured variable relating to the surface roughness of the roller surface, in particular A q , A s k and / or A qm .
  • FIG. 4 a firstly shows the present example for a reflectivity
  • Stray light measurement measuring device formed 70 the light source 76 for irradiating a light beam (left arrow) on the roll surface 24 in
  • a measuring device 70 is particularly suitable for measuring the surface roughness by the laser triangulation method.
  • the light source 76 of the measuring device 70 may also be arranged centrally and irradiate a light beam perpendicular to the roller surface.
  • the light sensor 78 may then be annular around the light source 76, for example
  • the measuring device 70 or the light sensor 78 may also be a line detector.
  • FIG. 4b shows the light intensity 1 (a) detected by such an annularly arranged light sensor 78 as a function of the scattering angle o.
  • the light is diffused by the roll surface the more diffuse the roughness of the
  • Measurand A qm corresponds to a mean value of a defined number of
  • FIGS. 5a-b illustrate a method for determining patterns on the roller surface 24.
  • the measuring device 70 may include a
  • Roll surface 24 can be recorded in a measuring range 72.
  • FIG. 5a exemplarily shows such an image of a section of the roller surface 24, wherein z and x represent the coordinates of the image (lines and columns).
  • Image data includes an intensity value I (x, z) for each coordinate (x, z).
  • the roller surface 24 has a periodically recurring pattern 100.
  • the presence of such a pattern 100 can be automatically determined, for example, by means of a Fourier transformation of the image data of the image from FIG. 5a.
  • 5b shows an exemplary result of an evaluation function F (x q), which comprises a Fourier transform of the image data from Figure 5a, and is plotted in Figure 5b against the Fourier variable x q columns of the image.
  • F x q
  • Evaluation function F (q) for determining recurrent patterns in the direction of the x-axis of the image from FIG. 5a is given below:
  • the periodically recurring pattern 100 can be seen in the diagram as a clearly pronounced maximum and can be determined automatically in this way.
  • Figure 6 shows a diagrammatic representation of an exemplary
  • a grinding program 110 comprising a plurality of consecutive grinding steps 1 to 10, wherein each of the grinding steps comprises two transitions of the grinding tool 40 across the roller surface 24, as the grinding tool 40 moves from one end of the roll bale to the other end (first transition) and back (second Crossing).
  • the grinding steps 1 to 10 of the grinding program 110 are grouped into two major sections, namely a first section 112 with the grinding steps 1 to 5 for pre-grinding the roller 20 in which the roller geometry is adjusted, and a second section 114 with the grinding steps 6 to 10 for finish grinding of the roll, in which the desired surface finish of the roll is adjusted.
  • a measurement of at least one measured quantity relating to the surface quality is preferably carried out continuously.
  • the controller 80 may then be dependent on the determined Measured values set the operating parameters of the current and / or subsequent grinding steps of the grinding program 110.
  • control device 80 preferably jumps automatically to an earlier grinding step, for example to Grinding step 3 back to this error in the course of the now following grinding steps 4 to 10 can fix.
  • FIG. 7 shows a diagram with an exemplary variation of a
  • the roller speed W for a transition of the grinding tool 40 over the roller surface 24 against the axial position z of the grinding tool 40 to the roller ball 22 is plotted.
  • the roll speed W is varied within a corridor between a predetermined upper limit 122 and a predetermined lower limit 124 for the roll speed.
  • the variation of the operating parameter can, as shown in FIG. 7, take place regularly, but also irregularly. It has been found that by such a variation of an operating parameter during a transition of the
  • Figure 8 shows a schematic control diagram for a possible control of one or more controlled variables over one or more operating parameters of the roll grinding apparatus 10 of Figure 1 during grinding, i. during the ongoing grinding process.
  • the grinding process represents the controlled system.
  • various disturbance variables act, for example
  • one or more measured variables related to the surface quality of the roll are determined and used as controlled variables for the control. 8
  • the mean roughness value ⁇ q and the oscillation spectrum of the roll grinding device F m are indicated as possible controlled variables.
  • AA q (c) Under the local Rauheitsabweichung AA q (c, the deviation of the local roughness value is A q at a rate determined by the position z in an axial direction and through the position c in the circumferential direction of the roller body to an average roughness value ⁇ zj understood q.
  • AA q (c, z) by the formula
  • a q (c, z) A q (c, z) - ⁇ q
  • a q (c, z) is the local roughness value determined by means of scattered light measurement in a measuring range 72 at axial position z and circumferential position c of the roller 20
  • ⁇ q is a mean roughness value calculated by averaging over several measuring ranges.
  • the local roughness value in the axial direction A q (z) is understood to mean the roughness value A q of the roll surface as a function of the position z in the axial direction.
  • a q (z) can be determined by means of scattered light measurement in a measuring region 72 at the axial position z of the roller 20.
  • a q (z) can be determined by averaging roughness values A q in the circumferential direction at substantially the same z position.
  • Below the mean roughness value ⁇ q is an average of the during the
  • ⁇ q can be determined by averaging the roughness values A q measured by means of scattered light measurement in different measuring ranges 72. Such an averaging is preferably selected so that ⁇ q represents an average roughness value of substantially the entire roll surface 24.
  • the vibration spectrum F m of the roll grinding device is understood to mean the frequency-dependent amplitude of the vibrations of the roll grinding device. For example, if the roll grinding device 10 oscillates at certain frequencies, then the vibration spectrum F m has a maximum at these frequencies.
  • the oscillation spectrum F m can be determined in particular by means of an acceleration sensor provided on the roll grinding device 10. For example, the vibration spectrum in a certain
  • Time interval are calculated by a Fourier transformation of a time series a (t) of the acceleration measured by the acceleration sensor.
  • controlled variables which represent the pattern freedom, properties of the roughness of the roll 20 or also the state of vibration of the roll grinding apparatus 10
  • controlled variables can be used that are related to or dependent on one or more of the controlled variables AA q (c, z), A q (z), ⁇ q and F m .
  • the acceleration a (t) of the roll grinding device 10 or a variable derived from the oscillation spectrum F m can also be used directly as a controlled variable.
  • the regulation is described below by way of example for the controlled variables AA q (c, z), A q (z), A q and m.
  • the regulation of the roll grinding device 10 can take place simultaneously with one or more controlled variables. For example, to achieve the
  • Non-pattern control over the controlled variable AA q (c, z) or other controlled variable related to the sample freedom can be done in addition to a control of the controlled variable A q (z) or another on the roughness in the axial direction related control variable.
  • a uniform roughness over the roll width can be done in addition to a control of the controlled variable A q (z) or another on the roughness in the axial direction related control variable.
  • Roll grinding device 10 also carried out a control of the controlled variable F m or another related to the vibration state of the roll grinding controlled variable.
  • the values recorded during grinding for the individual controlled variables are fed back and compared with the respective setpoint values for the controlled variables (AA q soll (c, z), A q soll (z), ⁇ q so11 and F m so11 ), ie a deviation of the respective control variable from the desired value is determined, in particular by subtraction such as ⁇ q - ⁇ q so11 .
  • the setpoint values for the individual controlled variables are also referred to as reference variables.
  • the local roughness deviation is preferably minimized to achieve uniform roughness and, in particular, pattern freedom. Therefore, AA q soll (c, z) is preferably small for all positions c and v, in particular zero.
  • Roughness value in the axial direction is preferably as constant as possible and corresponds to the target roughness. Therefore, A q soll (z) is preferably constant for all positions z and in particular equal to the target roughness.
  • the average roughness should preferably adopt the Zielrauheitswert so that ⁇ q SO11 preferably the Zielrauheit corresponds.
  • the oscillation spectrum preferably has no strong maxima, which can lead to a pattern formation, so that as F m sol! preferably a constant amplitude or even zero amplitude spectrum is selected.
  • the target values of one or more controlled variables can also be adjusted depending on the respective grinding step become.
  • the rough grinding program may first be started with larger target values A q so, 1 (z) and ⁇ q so11 before these target values are reduced until they finally reach the target roughness at the last grinding step.
  • different setpoint values can be used during pre-grinding than in finish grinding.
  • the controller illustrated in FIG. 8 calculates values for one or more operating parameters for each controlled variable used in the control in order to counteract the deviation of the respective controlled variable from the desired value. These operating parameters are therefore the manipulated variables of the control. The operating parameters are then set according to the values calculated by the controller and thus affect the grinding process, thus closing the control loop.
  • AA q (c, z) can be used as a manipulated variable in particular the change of
  • the grinding current AI (c, z) are used as a function of the axial direction z.
  • the grinding current I (c, z) is the current (for example the armature current) of the motor for driving the grinding wheel 42.
  • the grinding current change AI (c, z) can not normally be controlled directly, but must be controlled in turn.
  • a regulation of the grinding current change AI (c, z) can take place in particular via the position a u of the drive for the fine adjustment (so-called u-axis) of the employment of the grinding tool 40 to the roller 20.
  • u u can be adjusted in particular the pressure with which the abrasive body 42 presses on the roller 20, and thus the applied by the drive of the grinding wheel 42 torque or the grinding current.
  • u u can also be used directly as a manipulated variable for the controlled variable AA q (c, z).
  • the position a u and / or a e of the drive for the fine adjustment of the adjustment of the grinding tool 40 to the roller 20 can be used as the manipulated variable.
  • the controlled variable e q particular one or more of the following may
  • Manipulated variables are used: the position a e and / or a u of the drive for the coarse and / or fine adjustment of the setting of the grinding tool 40 to the roller 20, the rotational speed v w of the roller 20, ie the speed of
  • the manipulated variable ⁇ q also the manipulated variable of the relative speed between the grinding tool 40 and the roller surface 24 may be used. This depends on v w and Vf a . Alternatively, the value for v w in the calculation of the value may be considered for Vfa or vice versa.
  • the vibration spectrum of the roll grinding device 10 can be influenced in particular by the fact that at least one operating parameter such as
  • Circulating speed v c of the grinding wheel or the grinding wheel speed S is varied during a transition of the grinding tool on the roll surface within predetermined limits.
  • An example of such a variation of an operating parameter is shown in FIG. 7 described above.
  • Circulation speed v c of the grinding wheel can each by a
  • control variables F m the frequency f vw and / or the amplitude Avw of the variation of the rotational speed v w of the roller or frequency f vc and / or the amplitude A vc of the variation of the rotational speed v c of
  • the regulation of the roll grinding device 10 can in particular by the
  • Control device 80 take place.
  • the control device 80 is in particular configured to carry out such a control, in particular in accordance with the previously described embodiments and exemplary embodiments.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
  • Crushing And Grinding (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)

Abstract

L'invention concerne un procédé de rectification d'un cylindre (20) au moyen d'un dispositif de rectification (10) de cylindre. Selon ce procédé, un cylindre (20) est rectifié au moyen d'un outil de rectification (40) du dispositif de rectification (10) de cylindre, pendant la rectification, au moins une valeur de mesure d'au moins une grandeur de mesure se rapportant à la qualité de surface du cylindre (20) est mesurée, et, pendant la rectification, au moins un paramètre de fonctionnement du dispositif de rectification (10) de cylindre est réglé en fonction de la grandeur de mesure. L'invention concerne en outre un dispositif de rectification (10) de cylindre servant à rectifier un cylindre (20) pourvu d'un porte-cylindre (30) comprenant deux supports (32, 34), lesquels sont conçus pour le montage en rotation du cylindre (20), d'un entraînement (36), lequel est conçu pour l'entraînement en rotation du cylindre (20) à une vitesse de rotation réglable du cylindre, d'un outil de rectification (40), lequel est conçu pour le logement et pour l'entraînement en rotation d'un corps abrasif (42) à une vitesse de rotation réglable du corps abrasif et pour la mise en place du corps abrasif (42) par rapport au cylindre. Le dispositif de rectification (10) de cylindre comprend un dispositif de mesure (70), lequel est conçu pour mesurer les valeurs de mesure d'une grandeur de mesure se rapportant à la qualité de surface du cylindre (20) et le dispositif de rectification (10) de cylindre comprend un appareil de commande (80) servant à commander le dispositif. L'appareil de commande (80) est conçu pour déclencher pendant la rectification la mesure d'au moins une valeur de mesure au moyen du dispositif de mesure (70) et régler au moins un paramètre de fonctionnement du dispositif de rectification (10) de cylindre en fonction de la grandeur de mesure.
EP14823988.2A 2013-12-23 2014-12-22 Dispositif de rectification de cylindre et procédé de rectification d'un cylindre Active EP3086901B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013021800 2013-12-23
PCT/EP2014/078979 WO2015097146A2 (fr) 2013-12-23 2014-12-22 Dispositif de rectification de cylindre et procédé de rectification d'un cylindre

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EP3086901A2 true EP3086901A2 (fr) 2016-11-02
EP3086901B1 EP3086901B1 (fr) 2023-06-07
EP3086901C0 EP3086901C0 (fr) 2023-06-07

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JP (1) JP6337125B2 (fr)
CN (1) CN105848826B (fr)
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WO (1) WO2015097146A2 (fr)

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CZ306564B6 (cs) * 2015-11-10 2017-03-08 S.A.M. - metalizaÄŤnĂ­ spoleÄŤnost, s.r.o. Způsob obrábění povrchu rotačních součástí a zařízení k provádění tohoto způsobu
CN110064971A (zh) * 2016-04-28 2019-07-30 株式会社捷太格特 机床系统以及表面粗糙度检测方法
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CN111890204B (zh) * 2020-07-08 2021-07-16 天津大学 一种海底管道试验除锈测量标定一体的试验设备
CN112428089A (zh) * 2020-11-20 2021-03-02 湖南力方轧辊有限公司 一种合金铸钢轧辊加工用磨床
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CN113177275B (zh) * 2021-04-25 2022-11-08 中国航发哈尔滨东安发动机有限公司 考虑磨削液润滑影响并联合fft技术的轴承跑道外圆磨削温度求解方法
CN114193249A (zh) * 2021-09-18 2022-03-18 张柳祥 一种金属导线表面处理系统
CN114012513B (zh) * 2021-11-17 2023-12-22 马鞍山钢铁股份有限公司 一种磨床托瓦的研磨工具的使用方法
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JP2017500216A (ja) 2017-01-05
EP3086901C0 (fr) 2023-06-07
CN105848826A (zh) 2016-08-10
WO2015097146A2 (fr) 2015-07-02
JP6337125B2 (ja) 2018-06-06
CN105848826B (zh) 2018-04-13
WO2015097146A3 (fr) 2015-08-13
ES2951593T3 (es) 2023-10-23

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