EP3595823B1 - Verfahren zum betreiben einer rollenrichtmaschine und rollenrichtmaschine - Google Patents

Verfahren zum betreiben einer rollenrichtmaschine und rollenrichtmaschine Download PDF

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Publication number
EP3595823B1
EP3595823B1 EP18710849.3A EP18710849A EP3595823B1 EP 3595823 B1 EP3595823 B1 EP 3595823B1 EP 18710849 A EP18710849 A EP 18710849A EP 3595823 B1 EP3595823 B1 EP 3595823B1
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EP
European Patent Office
Prior art keywords
straightening
wear
roller
reshaping
machine
Prior art date
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Active
Application number
EP18710849.3A
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German (de)
English (en)
French (fr)
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EP3595823A1 (de
Inventor
Olaf HAUSMANN
Helmut Jax
Roman Dehmel
Olexand Shmagun
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SMS Group GmbH
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SMS Group GmbH
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Publication of EP3595823A1 publication Critical patent/EP3595823A1/de
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
    • B21D1/02—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling by rollers

Definitions

  • the invention relates to a method for operating a roller straightening machine, the roller straightening machine having a number of forming tools, the forming tools comprising at least one set of upper and lower straightening rollers, a metallic flat material to be straightened being conveyed in a conveying direction between the upper and lower straightening rollers.
  • the invention also relates to a roller straightening machine.
  • a roller straightening machine of the generic type is from EP 0 551 658 B1 known.
  • individual straightening rollers are positioned in a targeted manner in order to achieve the required position of the rollers for the straightening process.
  • JP-A-405111716 discloses a generic straightening machine in which an entire set of straightening rolls is adjusted with regard to its wear.
  • JP-A-2015123460 and in the JP-A-359097719 similar solutions are described.
  • the invention is therefore based on the object, a method of the kind referred to retrain that even with concisedem tool wear high directivity quality can be achieved without compromising the performance of the leveler.
  • the at least one shaping tool can preferably be a straightening roll, a support roll and / or an adjustment system for the straightening roll.
  • the determination of the state of wear of at least one of the forming tools in accordance with step a) above can be or comprise a manual wear measurement of the forming tool with subsequent input of the measured value into a machine control system.
  • the determination of the state of wear of at least one of the forming tools in accordance with step a) above is or includes an automatically performed measuring process and an automated comparison with a setpoint value.
  • step a) the determination of the state of wear of at least one of the forming tools in accordance with step a) above takes place by a calibration process of the roller straightening machine, with data determined during the calibration being compared with data from a calibration process carried out earlier, and in this way inferring that there has been wear in the meantime .
  • step b) The determination of a correction value and / or a compensation value for the operation of the forming tool in accordance with step b) above can take place on the basis of a simulation calculation based on a simulation model of the roller straightening machine.
  • the determination of a correction value and / or a compensation value for the operation of the forming tool according to step b) above takes place on the basis of a predetermined characteristic curve, which in particular specifies the state of wear over time.
  • the proposed roller straightening machine with a number of forming tools comprising at least one set of upper and lower straightening rollers, whereby a metallic flat material to be straightened can be conveyed in a conveying direction between the upper and lower straightening rollers
  • the roller straightening machine has means for wear detection at least one of the forming tools as well as means to compensate for the determined wear on the forming tools
  • the roller straightening machine also having means for individually driving and individually adjusting the straightening rolls and for adapting the speed of a straightening roll and / or the adjusting position of the straightening roll and / or for changing an applied bending moment has for a bending compensation.
  • a machine control system is preferably available for controlling the means for compensating for the determined wear on the forming tools.
  • the means for detecting wear can be or comprise measuring means for detecting the force, the pressure, the drive torque and / or the path.
  • the means for compensating for the determined wear can be or comprise a bending system for the straightening rolls and / or an adjustment system for the straightening rolls.
  • the means for compensating for the determined wear can include a technological model of the roller straightening machine.
  • the invention makes it possible to simultaneously provide the use of worn and unworn tools in the straightening machine without suffering any losses in the quality of the straightening process.
  • the means for compensating for wear can be individual drives of the straightening rollers for correcting the speed or torque, if necessary with load compensation control.
  • the forming tools are generally to be understood as driven straightening rollers that do the actual forming work, support rollers or support rollers for the straightening rollers with appropriate bearings, bending systems in the form of individual adjustment systems for adjusting the straightening gap contour over the straightening roller barrel in a loaded and unloaded state, and adjustment systems for adjusting Immersion depths of individual roles in loaded and unloaded condition.
  • the setting of the roller straightening machine involves setting operating parameters of the straightening machine in order to carry out a straightening process.
  • Each straightening roller receives individual adjustment parameters for the adjustable tools.
  • the relationship stored in the machine control is determined by observing, logging and defining the wear state of the straightening roll over time, numerically or as a formula-based relationship.
  • the relationship stored in the machine control can alternatively or additionally be determined on the basis of a theoretical calculation, the parameters influencing the wear of the straightening roll being taken into account in a simulation model, in particular the number of straightening stitches, the drive torque of the straightening roll, the straightening force, the coefficient of static friction and / or the tinder attack.
  • the proposed solution accordingly provides a method for compensating wear in straightening machines, which can be used in particular when straightening metallic flat material, such as sheet metal, sheet metal material, plates and their parts, and strips. It is particularly suitable for straightening steel sheets or strips.
  • the wear of the straightening tools ie the straightening and the backup rolls, of a straightening machine can be compensated by a constant To maintain the standard quality over the cycle of use of the tools mentioned.
  • straightening and backup rolls with different levels of wear and tear can be operated simultaneously in a straightening machine in one set of rolls, since the height and speed of rotation of each individual straightening roll can be switched on and off depending on the state. The same applies to the issue of the straightening roll and the bending of the straightening roll.
  • the determination of the state of wear of components is based on a theoretical calculation (e.g. number of straightening stitches, drive torque, straightening force, coefficient of static friction, incidence of scale) possible.
  • a technological model can be used to calculate and control the functional units of the machine (main adjustment including tilting and swiveling to influence various flatness errors, bending, expansion and compression compensation, adjustment of individual straightening rollers, drive torques), in particular taking into account the state of wear of the tools .
  • the wear of the tools of the straightening machine (wear of the straightening rolls and the supporting apparatus of the backup rolls) can be compensated on the basis of a wear model.
  • the individual drives can be used to distribute the drive torques in a targeted manner for optimized utilization of the service life and distribution of the wear behavior of components.
  • the threading of the material to be straightened can be optimized via a drive torque control.
  • the risk of markings of the material head hitting the straightening roller is reduced and thus also the risk that a damaged area (flaw) on the straightening roller ball is impressed on the material surface and the surface quality of the product is negatively influenced as a result.
  • all or at least some of the straightening rolls to be built into a straightening roll set do not have to be ground down to a uniform straightening roll diameter in a complex manner.
  • all or at least some of the backup rolls to be built into a straightening roll set do not have to be ground to a uniform backup roll diameter in an expensive manner.
  • a straightening roll (it can be an upper straightening roll 2 or a lower straightening roll 3) of a roller straightening machine 1 is outlined schematically.
  • the straightening roll 2, 3 is supported during operation, for which purpose a number of support rolls 4 are arranged along the axial extent thereof.
  • the support rollers 4 are held by a support roller bearing 11.
  • a bending system 8 with several bending cylinders acts on the support roller bearing 11. These exert a defined bending moment on the support roller bearings 11, so that the support roller bearings 11 come together Support rollers 4 bends. This deflection is in Figure 2 depicted in a greatly exaggerated manner.
  • roller straightening machine 1 can be seen schematically in a side view, whereby it can be seen that each of the upper straightening rolls 2 and the lower straightening rolls 3 is connected to an adjustment system 5 which adjusts the straightening rolls 2, 3 towards the flat material 6.
  • Figure 1 shows an upper straightening roll 2 with the diameter D, which is in contact with the material 6 to be straightened.
  • the straightening roll 2 is supported by a number of support rollers 4 (in other designs the straightening roll is supported by only a single support roller - also called a support roller; both are covered by the present invention).
  • a bending system 8 consisting of several bending cylinders acts via the support rollers 4 on the bale of the straightening roller 2 and can thus adjust the deflection of the straightening roller 2 over the bale length.
  • each straightening roller 2 is a total of one in Figure 1 not shown adjustment system (this is in Figure 3 with the reference number 5) adjustable in their immersion depth.
  • FIG 3 shows a further mode of operation of the proposed idea, in which a set of upper and lower straightening rollers 2, 3 is shown schematically in another perspective, which are in engagement with the material 6 to be straightened.
  • an upper and a lower straightening roller 2, 3 are clearly ground off, which is marked with the reduced diameter d compared to the original diameter D. is.
  • Each straightening roll 2, 3 has its own drive 10 (s. Figure 1 ), via which the speed and torque are controlled.
  • Each straightening roller 2, 3 has its own position in order to adjust the immersion depth - that is, the complete vertical adjustment - regardless of the bend over the roll barrel.
  • the representation of the support rollers and bending cylinders was given in Figure 3 omitted for the sake of simplicity.
  • the schematic illustration shows that, in the case of the worn straightening rolls, the machine control 7 positions the adjustment in such a way that an immersion depth necessary for the straightening process is reached, even if there is wear. This is achieved by increasing the adjustment stroke by the wear value - in this case the diameter difference.
  • the drive specifications for the worn straightening rolls with regard to torque and / or speed are corrected by the machine control 7 in such a way that the smaller straightening roll diameter is compensated.
  • the straightening task can be carried out optimally.
  • the adjustment and the individual drive act as a means to compensate for wear, the adjustment values / setting values of which have been corrected.
  • the proposed concept initially serves to set the system before carrying out a straightening process.
  • the state of wear of the tools must be determined using suitable methods. Subsequently, the necessary correction value or a compensation parameter is calculated, which results in a new setting parameter / setting value that is changed compared to the unworn tool.
  • the machine control 7 forwards the corrected setting parameters to the individual tools so that their operating parameters, the so-called tool functions, are set.
  • the computing unit for determining correction values and the machine control can be separate units (see Figure 3 ), but they can also be integrated into a common unit (see Figure 2 ).
  • the unworn tools receive a compensation value of "zero", i.e. H. the originally planned settlement is not corrected.
  • the basic procedure for setting the roller straightening machine is not discussed here, since this is well known in the prior art.
  • the main objective here is to solve the problem of wear and tear and its integration into the system.
  • worn and unworn tools can be used in a straightening machine at the same time without suffering any loss in the quality of the straightening process.
  • the wear detection can take place after a manual measurement via manual input by the operating personnel.
  • a possible automated process step of the wear determination consists in the determination of the wear by means of a target / actual value comparison of process target values to measured process actual values and from the conclusion on wear.
  • different values of straightening force, torque, spring deflection etc. can be used.
  • the measurement can be carried out in the form of position measurement, force measurement and / or pressure measurement systems with appropriate sensors built into the straightening machine. In this way, in the context of torque measurements during a straightening process, conclusions can be drawn about the state of wear of a straightening roller, which are taken into account in the setting for the subsequent straightening process.
  • wear can take the form of an empirical determination of wear values.
  • wear can be determined via a system calibration, in that the results of a system calibration carried out are compared with the results of one or more previous system calibrations.
  • the determination / calculation of the correction values is carried out in a separate calculation unit or directly by the machine control 7. This depends on the detailed design of the system automation and system control.
  • the calculation of the correction values is preferably carried out by a technological straightening machine model which calculates the setting values (including adjustment) and the wear-related correction values for setting.
  • the machine control 7 sets the system, that is, the targeted transmission of the operating positions and operating values to the respective tools.
  • the first step is to record the diameter deviation from the target value.
  • the straightening process is then calculated with the corrected diameter value so that the necessary adjustment parameters, including the special correction values, result.
  • the machine control 7 forwards the corresponding setting parameters / setting values to the tool functions.
  • a preferred correction of a tool function is assigned to the wear forms. Wear over the entire straightening roll barrel is preferably corrected by adjusting the straightening roll and its speed, local wear from Straightening rollers corrected by the bending cylinder and the straightening roller speed, wear of support rollers corrected by the adjustment and / or the bending cylinder. Other combinations are possible.
  • the roller straightening machine has means for detecting wear, e.g. B. in the form of the sensors already mentioned above. It also has the means to compensate for wear.
  • These means for compensation preferably consist of a combination of single roller adjustments - i.e. the possibility of adjusting the immersion depth of each straightening roller individually - in conjunction with a single roller drive (i.e. an individual drive train with adjustable speed and torque).
  • a bending system is provided for each straightening roller, with which the contour of the straightening roller can be influenced in order to avoid local wear (see reference number 9 in FIG Figure 1 ) to correct specifically.
  • Another feature to improve the straightening result, taking wear parameters into account, is the load balancing control of the individual neighboring straightening roller drives. In this way, undesired torque distortions or speed distortions are compensated for.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Straightening Metal Sheet-Like Bodies (AREA)
EP18710849.3A 2017-03-13 2018-03-12 Verfahren zum betreiben einer rollenrichtmaschine und rollenrichtmaschine Active EP3595823B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
UAA201702314 2017-03-13
PCT/EP2018/055992 WO2018166929A1 (de) 2017-03-13 2018-03-12 Verfahren zum betrieben einer rollenrichtmaschine und rollenrichtmaschine

Publications (2)

Publication Number Publication Date
EP3595823A1 EP3595823A1 (de) 2020-01-22
EP3595823B1 true EP3595823B1 (de) 2020-11-04

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EP18710849.3A Active EP3595823B1 (de) 2017-03-13 2018-03-12 Verfahren zum betreiben einer rollenrichtmaschine und rollenrichtmaschine

Country Status (6)

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US (1) US20200230677A1 (zh)
EP (1) EP3595823B1 (zh)
JP (1) JP2020508880A (zh)
CN (1) CN110418683B (zh)
DE (1) DE102018203638A1 (zh)
WO (1) WO2018166929A1 (zh)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109821930B (zh) * 2019-02-14 2020-06-26 中国重型机械研究院股份公司 一种拉伸弯曲矫直机工作参数设定方法
CN114570791B (zh) * 2020-11-30 2024-08-09 宝山钢铁股份有限公司 一种提高酸洗冷连轧机组矫直机安装及调整辊子压下精度的方法与装置
CN113634620B (zh) * 2021-08-11 2023-09-01 武汉科技大学 一种矫直机辊子磨损量监测与自适应反馈调节系统及方法
CN114178347B (zh) * 2021-11-23 2023-11-21 中冶南方工程技术有限公司 一种带钢平整方法
CN116880272A (zh) * 2023-07-06 2023-10-13 中冶南方工程技术有限公司 矫直机控制系统

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JPH05111716A (ja) * 1991-10-21 1993-05-07 Kawasaki Steel Corp ローラーレベラーの操業方法
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Publication number Publication date
JP2020508880A (ja) 2020-03-26
CN110418683B (zh) 2021-01-15
CN110418683A (zh) 2019-11-05
EP3595823A1 (de) 2020-01-22
DE102018203638A1 (de) 2018-09-13
WO2018166929A1 (de) 2018-09-20
US20200230677A1 (en) 2020-07-23

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