EP2590761B1 - Walzanlage mit vorrichtung zur bestimmung der walz- bzw. führungskaliber der walz- bzw. führungsgerüste in einer mehrgerüstigen walzanlage - Google Patents

Walzanlage mit vorrichtung zur bestimmung der walz- bzw. führungskaliber der walz- bzw. führungsgerüste in einer mehrgerüstigen walzanlage Download PDF

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Publication number
EP2590761B1
EP2590761B1 EP12778600.2A EP12778600A EP2590761B1 EP 2590761 B1 EP2590761 B1 EP 2590761B1 EP 12778600 A EP12778600 A EP 12778600A EP 2590761 B1 EP2590761 B1 EP 2590761B1
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EP
European Patent Office
Prior art keywords
rolling mill
rolling
scale
camera
guide
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.)
Active
Application number
EP12778600.2A
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German (de)
English (en)
French (fr)
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EP2590761A2 (de
Inventor
Mark Haverkamp
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.)
SMS Group GmbH
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SMS Meer GmbH
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Filing date
Publication date
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Publication of EP2590761A2 publication Critical patent/EP2590761A2/de
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Publication of EP2590761B1 publication Critical patent/EP2590761B1/de
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
    • B21B38/10—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring roll-gap, e.g. pass indicators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/16—Adjusting or positioning rolls
    • 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
    • B21B—ROLLING OF METAL
    • B21B2273/00—Path parameters
    • B21B2273/22—Aligning on rolling axis, e.g. of roll calibers

Definitions

  • the invention relates to a rolling mill.
  • multi-stand rolling mills are known, in which the rolling caliber according to the pass line of the rolling mill, so the plant according to the provided mean passage line of the rolling plants to be checked and optimized.
  • stencil bodies are each clamped between the rollers of a roll stand and aligned by means of a laser system.
  • a rolling mill with an array of rollers and / or guides along a pass line bearing, arranged in a rolling mill stands and / or guide frames and with a device for determining the rolling or caliber of the rollers, which includes a camera, wherein the Rolling equipment having an input side and an output side and the camera are arranged on one of the input or output sides and a backlight on the other of the input or output sides, characterized in that the camera has an optical device with a depth of field, which has all rolling mills and / or scaffolding is enough.
  • the necessary contrast is selected, which require the detection means to sufficiently reliable each a roller or guide surface of the rollers or guides of the first and the last scaffold can be reliably detected. In this way, after the camera has been adjusted once, the measurement of the rolling or guide calibers can be carried out without any further mechanical adjustments of the optics.
  • a transmitter may be provided for a reference means.
  • a reference means can be, for example, a light beam, for example a light beam generated by a laser, on which, depending on the specific implementation of the present invention, a reference scale is located, which makes it possible to dimensions for each individual scaffold for a camera downstream image processing device available to make so that the respective position of the rollers or guides and thus the rolling or guide caliber can be determined according to scale on the image processing.
  • a suitable design it may be sufficient to provide substantially less axial positions along the pass line by means of a comparative scale for image processing with a scale.
  • a corresponding comparative scale only in the area of the backlight or on the first rolling stand and / or on Last mill stand is measured, and then on a triangulation or radiation sets by means of mathematically well-known mathematics calculation methods to extrapolate the scale to the other scaffolding and can.
  • the latter has the advantage that only slightly accessible areas of the rolling mill are to be provided with a comparative scale.
  • a variety of devices can be used. It is conceivable, for example, a separate reference plate, as well as a corresponding scale in the backlight or even be placed directly on the backlight, and accordingly serve as a transmitter for a reference means and as a benchmark.
  • exactly or sufficiently accurately measured rolls or guides can serve as reference means or for determining the reference scale.
  • a method for determining the rolling or guide caliber of the rolling stands and / or guide stands in a multi-stand rolling mill with a pass line wherein a camera arranged on one of the input or output sides and then the rolling or guide caliber of the stands is determined , characterized in that prior to determining the rolling or guiding caliber of the scaffolds, the camera is aligned with the aid of mechanical reference to the pass line and at least one reference scale is recorded on the camera and an image processing is supplied. Aligning to the pass line has the advantage that further adjustments are not necessary, which were ultimately impaired the measurement result again.
  • a mechanical reference for example, a comparative scale, attachable to the scaffolds or other racks markers, such as telescopic mounts or bridges with holes, or rollers or guides themselves, for example, the first or last frame, but also a previously adjusted accordingly camera mount, the calibrated sufficiently durable is to be used.
  • a transmitter for a reference means such as a laser beam or other marking in front of a backlight or on a backlight can be used as a reference scale, especially if they are positioned in a suitable retaining ring, which can then be used as a mechanical reference means before measuring can be.
  • Walzunlagen are relatively large and the fact that a large number of scaffolds are arranged very close together, the areas between the first and last scaffold are extremely accessible, because around the rollers and guides around even a variety of Ancillaries is arranged.
  • a camera with a suitable optics which image acquisition even at very large distances, for example 30 meters and more, allows to remain permanently aligned aligned on the pass line, if the respective workpieces in their length allow such.
  • a correspondingly large distance of the camera from the frameworks makes it possible, in particular because of the large focal length then required, to provide a correspondingly elongated focal area which has sufficient depth of focus over all the frameworks.
  • a backlight and any reference means can be arranged so far away easily if this allow the other environmental conditions.
  • a reference scale a scale on the backlight or else rollers or fillings themselves, for example the first or last stand, can be used as the reference scale.
  • the contours or even the distances of the flanks which in particular are not subject to wear on their sides facing away from the workpieces, are generally well known in their dimensions, in order then to serve as a reference scale.
  • a scale can then be defined for the image processing in each rolling stand, which makes it possible to prove a recognized roll or guide contour with an appropriate dimension.
  • the image processing for determining the rolling or guide caliber can each recognize the contour of a roll or guide surface via image recognition and with reference to the reference scale, which was optionally extrapolated by mathematical methods of another reference scale, the position of the respective roller or calculate leadership.
  • a rolling mill with an arrangement of rollers and / or guides along a pass line, arranged in a rolling mill stands and / or guide frames and with a device for determining the rolling or guide caliber of the rolls or Guides that include a camera, wherein the rolling mill has an input and an output side, can be characterized in that on the other of the input or output side, a holder for the support of a comparative scale is arranged.
  • a holder for the support of a comparative scale is arranged on the other of the input or output side.
  • the support extends at least through a framework, so that the comparative scale is used in the interior of the arrangement of scaffolds accordingly. In this way, it is particularly not necessary, from the side between the individual scaffolds, to position the reference scale.
  • the comparison scale is displaceable along the rolling direction, so that measurements can be carried out with respect to different rolling stands and / or guide stands, each with the same comparative scale.
  • a device for determining the rolling or guide caliber of the stands in a multi-stand rolling mill can be distinguished by a support fixed perpendicularly to a comparative scale.
  • the carrier can also be designed as a tube and / or fixed centrally to the comparative scale, which on the one hand facilitates the handle and, on the other hand, if necessary signals can be forwarded through the tube in the middle. Accordingly, it may be advantageous if the comparison scale has at least one translucent area.
  • the comparative scale has at least two discrete scale points which clearly define a scale. If necessary, a corresponding margin can be used in this regard as well.
  • An apparatus not according to the invention for determining the rolling or guide calibers of the rolling stands and / or guide stands in a multi-stand rolling mill with an image processing device which from a recorded with the camera image of a reference means of a comparative scale and at least one roller or guide respectively the rolling or Guidance caliber determined, may be characterized in that the position of the reference means determined in the image and equated with a pass line of the rolling mill and from this, the position of the roller or guide is determined on the comparative scale.
  • a method for determining the rolling or guide calibers of the rolling stands and / or guide stands in a multi-stand rolling mill wherein a comparison scale positioned on each frame and then the rolling or guide caliber of the respective framework is determined, characterized in that prior to positioning the comparison scale, a camera is placed on one of the input or output sides and a reference means transmitter, a reference transmitter and / or a reference scale on the other of the input or output sides.
  • a method not according to the invention for determining the rolling or guide calibers of the rolling stands and / or guide stands in a multi-stand rolling mill wherein a comparative scale is positioned on each stand and then the rolling or guiding caliber of the respective stand is determined, can thereby be distinguished, in that prior to the positioning of the comparative scale on each roll stand, a transmitter for reference means and / or a camera is aligned on a pass line of the rolling mill.
  • the reference scale, a reference encoder and / or a reference scale and at least one roller or guide respectively rolling or guide caliber can be determined by determining the position of the reference means in the image and with the Equalized pass line and starting from this, the position of the roller or guide on the comparison scale or the reference scale is determined. In this way, with suitable process control, any positioning or adjustment measures of the camera, which would have to take place in the meantime, can be avoided.
  • a method for determining the rolling or guide caliber of the rolling stands and / or guide stands in a multi-stand rolling mill wherein a comparative scale Positioned each scaffold and then the rolling orinerskalibers of the respective scaffold is determined, characterized in that the comparison scale is carried from an input side or from an output side of the rolling mill ago carried on each scaffold.
  • a method not according to the invention for determining the rolling or guide calibers of the rolling stands and / or guide stands in a multi-stand rolling mill wherein a comparative scale is positioned and then the rolling or guide caliber of the respective stand is determined, may also be characterized in that the comparative scale is examined. In this way, easy and precise image recognition can be performed.
  • At least all the rollers or guides that lie between the camera and the roller or guide to be measured can be moved back radially outward or otherwise from a field of view of the camera and at least to the extent that an unadulterated image was taken can be.
  • the camera can measure unimpeded and above all without the risk of any confusion the respective rollers or guides and perform the image processing, the image processing then can also easily recognize a corresponding contour reliable.
  • rollers or guides are not individually adjustable. Then it may make sense to take whole scaffolding from the rolling line or to expand individual rolls or guides.
  • the values determined in this way with respect to positions of the rollers and guides can then be used to optimize the caliber.
  • an axial offset can also be compensated within certain limits in such a way that a new center of caliber or area centroid of the caliber results, which is closer to the pass line due to radial adjustment of the rolls.
  • the measured values in particular in interaction with other measured values, preferably to be determined online, can be used to control the roll or guide positions during rolling. It is also possible in this way to calibrate transducers for the abovementioned measurements to be determined online before the start of rolling.
  • a method not according to the invention for determining the rolling or guide calibers of the rolling stands or guide stands in a multi-stand rolling mill can be characterized in that roller or guide positions are determined online via transducers and the transducers are previously calibrated inline.
  • a calibration can be carried out quickly and accurately, by means of which the sensors can then be optimally utilized online for controlling the rollers or guides and their positions.
  • the calibration is carried out optically, in particular according to the above provisos.
  • the transducers may have a measuring point, such as a starting point of a displacement sensor or a light point of an optical displacement sensor, which is located directly on the roller or the guide or is indirectly connected only via mechanical assemblies with the roller or guide.
  • a measuring point such as a starting point of a displacement sensor or a light point of an optical displacement sensor, which is located directly on the roller or the guide or is indirectly connected only via mechanical assemblies with the roller or guide.
  • Rolling plants 1, 2, 3 and 4 shown each comprise rolling stands 10, which are arranged between an input side 12 and an output side 13 and each carry rollers 15.
  • each of which comprises such rolling mill stands 10 only one rolling stand and two conical and obliquely arranged rolls 15 and associated Diescherrionn 16 are arranged on the roll stand 15 in the rolling mill 4, wherein in the rolling mill 4 beyond a plurality of guides 17, which are each arranged on guide frames 18 and carry a mandrel 19, are provided.
  • the guides 17 are successively opened radially with respect to each guide frame 18 when a workpiece, driven by the mandrel rod 19, reaches the respective guide frame 18.
  • the guides 17 are formed as round discs, although it is not necessarily necessary, however, if appropriate, if they can roll as rollers.
  • Each of the rolling mills 1 to 4 comprises a pass line 20, which ultimately corresponds to the intended center of passage of a workpiece to be rolled, such as a pipe, a billet or a rod.
  • a camera 60 which is connected to an image processing device 70, with its optical axis or otherwise defined as placed on the pass line 20, wherein it is ultimately important that within the measurement accuracy of the identical portion of the camera 60th for each of the scaffolds 10, 15 the pass line 20 is detected. This has the advantage that then no further adjustment measures on the camera 60 or complex and therefore error-prone correction calculations are necessary.
  • the depth of focus of the camera 60 is chosen such that it extends over all the scaffolds 10, 18, since then also adjustments of the optical arrangement of the camera for focusing can be omitted.
  • Sufficient depth of focus is achieved when the image processing device 70 or a corresponding computer program that runs there for Each frame 10, 18 based on the images taken with sufficient accuracy can determine a contour of the rollers 15, the guides 17 or any scales.
  • a backlight 55 is preferably provided on the output side, that is to say on the side opposite the camera 60, which radiates a sufficiently uniform light to the camera 60, so that the contours of the respective rollers 15 to be measured or guides 17 become clear in front of the camera Backlight 55 off.
  • the backlight 55 itself may have a scale point, which may be, for example, through a hole or through a cover, as shown by way of example in FIG FIGS. 4 and 5 shown.
  • a separate scale can be provided, which can be used as a reference scale. Corresponding standards are exemplified by the FIGS. 1 to 3 explained further below.
  • the backlight 55 used is in particular a light plate, preferably with filter foils or with optionally collimated LEDs, which reduce the exit angle from the light plate in order to minimize stray light.
  • Illustrated embodiments serves as a reference scale and a scale that is formed by scale points 46 in a reference plate, which is used as a comparative scale 40.
  • the comparison scale 40 may be on a support 50, which is formed in this embodiment as a support tube 52, starting from the backlight 55 in the direction of the camera 60 to all rolling stands 10 or - should appropriate guides and guide frames, as they use the rolling mills 4 in FIG. 5 are to be present - be relocated to all guide frames 18 out, this is self-supporting realized by a provided in the backlight 55 bracket 53, depending on the specific implementation of a separate bracket 53 (see FIG. 3 ), which is arranged in front of or behind the backlight 55, may be used.
  • a reference dimension can be provided in each case with relatively great accuracy for each frame 10, 18, so that the determined contour of a roller 15 or guide 17 can accordingly also be provided with known dimensions. This then allows the image processing a statement about the exact position of the respective roller 15 or guide 17th
  • a corresponding reference dimension can be used for example, from the set of beams and one or two scales, which are respectively input side or output side, are calculated.
  • the scale points 56 of the backlight 55 can be used as a corresponding reference measure.
  • the rollers 15 of the first and last roll stand 10 and the guides 17 of the first and last guide stand 18 can serve as a reference measure, since these are generally easier to access from the outside.
  • a comparison scale can be provided on the input side 12 or the output side 13, which can be attached sufficiently defined there in any way. Ultimately, this is not a long carrier 50, which can reach through all scaffolds 10, 18, imperative.
  • each reference means 30 with a transmitter 35, which is formed in this embodiment as a laser on.
  • LEDs for example differently colored LEDs or other markings, similar to the scale points 46 and 56.
  • sufficiently well-measured rollers 15 or guides 18 may otherwise be used as reference means 30, for example, by suitably setting them and then emitting them by the backlight 55 as transmitters for the reference means 30 in order to move the camera 60 with respect thereto to align with the pass line 20.
  • markers that can be attached to the scaffolds 10 or 18 or other racks such as scaffold beams or building-fixed attachment points serve.
  • Such markers may in particular be telescopic poles or bridges with bores or measuring stirrups with measuring edges which represent the pass line 20.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Control Of Metal Rolling (AREA)
EP12778600.2A 2011-09-14 2012-09-14 Walzanlage mit vorrichtung zur bestimmung der walz- bzw. führungskaliber der walz- bzw. führungsgerüste in einer mehrgerüstigen walzanlage Active EP2590761B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011113135 2011-09-14
PCT/DE2012/000909 WO2013037350A2 (de) 2011-09-14 2012-09-14 Walzanlage sowie vorrichtung und verfahren zur bestimmung der walz- bzw. führungskaliber der walz- bzw. führungsgerüste in einer mehrgerüstigen walzanlage

Publications (2)

Publication Number Publication Date
EP2590761A2 EP2590761A2 (de) 2013-05-15
EP2590761B1 true EP2590761B1 (de) 2015-09-09

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US (1) US10286434B2 (ja)
EP (1) EP2590761B1 (ja)
JP (1) JP5943224B2 (ja)
CN (1) CN103857478B (ja)
DE (1) DE112012003825A5 (ja)
ES (1) ES2551870T3 (ja)
RU (1) RU2602216C2 (ja)
WO (1) WO2013037350A2 (ja)

Cited By (1)

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DE102022129593A1 (de) 2022-07-01 2024-01-04 Sms Group Gmbh Bestimmungsverfahren zur Bestimmung der Walz- bzw. Führungskaliber der Walzgerüste bzw. Führungsgerüste in einer mehrgerüstigen Walzanlage

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EP3184191B1 (de) * 2015-12-21 2020-02-05 Komax Holding AG Richtvorrichtung zum richten von kabeln
EP3208673B1 (de) * 2016-02-22 2019-06-05 Primetals Technologies Austria GmbH Inline-kalibrierung des walzspalts eines walzgerüsts
CN107537868B (zh) * 2017-08-22 2019-03-05 安徽马钢重型机械制造有限公司 一种冷轧轧机窗口空间位置尺寸精度在线检测方法
KR102020503B1 (ko) * 2018-04-03 2019-09-10 주식회사 포스코 평롤러 마모측정장치
CN108543811A (zh) * 2018-04-10 2018-09-18 河钢股份有限公司承德分公司 热轧机传动侧移动块零位标定装置及方法
DE102018003434A1 (de) * 2018-04-27 2019-10-31 Sms Group Gmbh Schrägwalzwerk mit hydraulischer Walzenanstellung
CN111421001B (zh) * 2019-01-10 2021-08-17 宝山钢铁股份有限公司 一种高速线材轧机在线精确对中系统及其对中方法
CN114798750A (zh) * 2022-05-27 2022-07-29 国核宝钛锆业股份公司 一种用于二辊冷轧机的孔型调整样板及其应用方法

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DE102022129593A1 (de) 2022-07-01 2024-01-04 Sms Group Gmbh Bestimmungsverfahren zur Bestimmung der Walz- bzw. Führungskaliber der Walzgerüste bzw. Führungsgerüste in einer mehrgerüstigen Walzanlage

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WO2013037350A3 (de) 2013-06-20
CN103857478A (zh) 2014-06-11
EP2590761A2 (de) 2013-05-15
RU2602216C2 (ru) 2016-11-10
US20140216121A1 (en) 2014-08-07
DE112012003825A5 (de) 2014-07-17
ES2551870T3 (es) 2015-11-24
JP5943224B2 (ja) 2016-06-29
RU2014109353A (ru) 2015-10-20
CN103857478B (zh) 2019-04-12
JP2014526976A (ja) 2014-10-09
WO2013037350A2 (de) 2013-03-21
US10286434B2 (en) 2019-05-14

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