EP3595823A1 - Verfahren zum betrieben einer rollenrichtmaschine und rollenrichtmaschine - Google Patents
Verfahren zum betrieben einer rollenrichtmaschine und rollenrichtmaschineInfo
- Publication number
- EP3595823A1 EP3595823A1 EP18710849.3A EP18710849A EP3595823A1 EP 3595823 A1 EP3595823 A1 EP 3595823A1 EP 18710849 A EP18710849 A EP 18710849A EP 3595823 A1 EP3595823 A1 EP 3595823A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- wear
- straightening
- roller
- forming tools
- forming
- 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
Links
Classifications
-
- 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 leveler, wherein the roller leveler comprises a number of forming tools, wherein the forming tools comprise at least one set of upper and lower straightening rolls, wherein between the upper and lower straightening rolls to be straightened metallic sheet is conveyed in a conveying direction. Furthermore, the invention relates to a roller leveler.
- a generic roller leveler is known from EP 0 551 658 B1.
- individual Richtwaizen be targeted to realize the required position of the rollers for the straightening process.
- straightening machines with different roller diameters are known.
- Individually adjustable straightening rollers are known from WO 2017/013099 A1.
- DE 1 930 349 A1 discloses a single drive for the rolls of a leveler.
- straightening machines are used in the majority of cases, which usually have no individually adjustable straightening rolls or only one individually adjustable inlet and outlet straightening rolls. The adjustment of the straightening rollers is done together by hiring the frame in which the straightening rollers are installed.
- the built-Rieht- and support rollers as built in the machine tools even in the aforementioned prior art solution, all have the same diameter.
- the invention is therefore based on the invention, a method of the type mentioned in such a way that even with ongoing wear of the tools, a high straightening quality can be achieved without affecting the performance of the straightening machine.
- the solution to this problem by the invention is characterized in that the method comprises the steps: Determining the state of wear of at least one of the forming tools;
- Adjustment parameter or setting value, for the forming tool based on the determined correction value and / or compensation value.
- the at least one forming tool can preferably be a straightening roller, a support roller and / or a positioning system for the straightening roller.
- Determining the state of wear of at least one of the forming tools according to step a) above can be or include a manual wear measurement of the forming tool with subsequent input of the measured value into a machine control.
- the determination of the state of wear of at least one of the forming tools according to step a) above is or includes an automatically performed measuring process and an automated comparison with a desired value.
- a further alternative solution for this purpose provides that the determination of the state of wear of at least one of the forming tools according to the above step a) is or comprises determining the wear due to a given empirical wear behavior of the forming tool.
- determining the state of wear of at least one of the forming tools according to the above step a) is carried out by a calibration of the roller straightening machine, wherein data determined during calibration are compared with data of a previously performed calibration process and thereby closed on intermittent wear.
- the determination of a correction value and / or a compensation value for the operation of the forming tool according to the above step b) can be done on the basis of a simulation calculation based on a simulation model of the roller leveler.
- the determination of a correction value and / or a compensation value for the operation of the forming tool according to the above step b) takes place on the basis of a predetermined characteristic, which in particular specifies the state of wear over time.
- the adaptation of an operating parameter for the forming tool according to the above step c) may be or include the adjustment of the rotational speed of a straightening roller and / or the setting position of the straightening roller and / or the changes of a discontinued bending moment for the bending compensation.
- the proposed roller leveler with a number of forming tools wherein the forming tools comprise at least one set of upper and lower straightening rollers, wherein between the upper and lower straightening rollers to be straightened metallic flat material can be conveyed in a conveying direction, according to the invention provides that the roller straightening means for detecting wear at least having one of the forming tools and means for compensating the determined wear on the forming tools.
- a machine control is preferably present.
- the means for detecting wear may 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 a setting system for the straightening rolls.
- the means for compensating the determined wear may include a technological model of the roller leveler. It is possible to associate the determined wear type with a preferred tool function. Furthermore, a collision check for the operation of the machine functionality within permissible working positions can take place.
- the invention makes it possible to provide at the same time the use of worn and unworn tools in the straightening machine without sacrificing the quality of the straightening process.
- the means for compensating for wear can be individual drives of the straightening rollers for correcting speed or torque, optionally with load balancing control.
- the forming tools are to be understood generally as driven straightening rollers, which perform the actual forming work, support rollers or support rollers for the straightening rollers with appropriate storage, bending systems in the form of individual Anstellsysteme for adjusting the Richtspaltkontur on the straightening rolls in loaded and unloaded condition and Anstellsysteme for setting Immersion depths of individual rollers in loaded and unloaded condition.
- different types of wear can be taken into account: First, local or area changes to the roll or roller bale are possible, ie a change over the longitudinal extent of the roller or roller. Furthermore, a Surface wear on sliding surfaces possible. In addition to ground leveling rolls or support rollers with local signs of wear, completely worn bales can also occur; the roller has then changed overall in diameter.
- each straightening roller receives individual setting parameters for the adjustable tools. It can be provided that an adjustment of the rotational speed of the straightening roller over time after a predetermined and stored in the machine control relationship. In this case, it is provided in particular that the relationship stored in the machine control is determined by observing the wear state of the straightening roller over time, logging it and defining it numerically or as a formulaic relationship.
- the relationship stored in the machine control can alternatively or additionally also be determined on the basis of a theoretical calculation, wherein the parameters influencing the wear of the straightening roll are taken into account in a simulation model, in particular the guide stitch count, the drive torque of the straightening roll, the straightening force, the static friction coefficient and / or the tinder accumulation.
- the proposed solution accordingly provides a method for wear compensation in straightening machines available, which can be used in particular when straightening metallic flat material, such as sheets, sheet metal, plates and their parts and bands. It is particularly suitable for straightening steel sheets or strips.
- the wear of the straightening tools ie the Rieht- and the backup rolls, a straightening machine can be compensated to a constant Maintain straightening quality over the cycle of use of said tools.
- straightening and support rollers can be operated with different state of wear and Abschliffschreib simultaneously in a straightening machine in a set of rollers, since the height and rotational speed of each straightening roller depending on the state and can be set. The same applies to the exhibition of the straightening roller, as well as the bending of the straightening roller.
- the determination of the state of wear of components is based on a theoretical calculation (eg, number of infeed points, drive torque, straightening force, static friction coefficient, scale attack).
- the drive torques for the optimized lifetime utilization and distribution of the wear behavior of components can be distributed in a targeted manner via the individual drives.
- the threading of the material to be straightened can be optimized.
- the risk of markings of the impact of the material gropf it on the straightening roller and thus reduces the risk that a damaged area (Macke) is imprinted on the leveling roll bales in the material surface and the surface quality of the product is thereby adversely affected.
- Fig. 1 shows a forming tool of a roller leveling machine, seen in
- FIG. 2 shows in the illustration of Figure 1, as shown in principle and exaggerated the wear of the straightening roller
- FIG. 1 schematically shows a straightening roller (it can be an upper straightening roller 2 or a lower straightening roller 3) of a roller straightening machine 1.
- the straightening roller 2, 3 is supported in operation, to which along the axial extent thereof a number of support rollers 4 is arranged.
- the support rollers 4 are held by a support roller bearing 1 1.
- On the support roller bearing 1 1 acts a bending system 8 with multiple bending cylinders. These exert on the support roller bearing 11 a defined bending moment, so that the support roller bearing 1 1 together Support rollers 4 bends. This deflection is shown in Figure 2 in a greatly exaggerated manner.
- a metallic flat material 6 (steel strip) is directed by means of the straightening roll 2, 3, for which purpose the straightening roll 2, 3 is driven by a drive 10 with defined torque and defined rotational speed.
- the flat material 6 is conveyed in the conveying direction F.
- the magnitude of the straightening force exerted by the straightening roller 2, 3 on the flat material 6, depends essentially on the corresponding delivery of the straightening roller 2, 3, which in turn is accomplished by the bending system 8.
- the straightening roll 2, 3 has a local wear region 9, which would lead to an incorrect straightening process.
- the diameter has dropped from an initial value D to a reduced value d in the middle of the straightening roller 2, 3.
- a machine control 7 which comprises a correction value determination 13.
- a memory 12 for wear values.
- the roll straightening machines 1 can be seen schematically in the side view, wherein it can be seen that each of the upper straightening rolls 2 and the lower straightening rolls 3 is in each case connected to a positioning system 5, which guides the straightening rolls 2, 3 onto the flat material 6 delivered.
- Figure 1 shows an upper straightening roller 2 with the diameter D, which is in contact with the material 6 to be straightened.
- the straightening roller 2 is supported by a number of support rollers 4 (in other designs, the straightening roller is supported by only a single support roller - also called a support roller - both are covered by the present invention).
- a bending system consisting of a plurality of bending cylinders 8 acts on 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 adjustable in its immersion depth overall by a positioning system, not shown in FIG. 1 (this is denoted by the reference numeral 5 in FIG. 3).
- Figure 2 shows the operation of the proposed solution in the same configuration as in Figure 1:
- the bending cylinder of the bending system 8 Through the appropriate control, in this case, the bending cylinder of the bending system 8, it is clear that the effect of the local wear phenomena 9 is compensated such that the contact between the straightening roller 2 and straightening material 6 is uniform.
- the bending cylinder of the bending system 8 thus act as a means for wear compensation.
- the corresponding signals are transmitted from the machine controller 7 to the bending cylinder of the bending system 8, wherein the local wear of the straightening roller 2 is taken into account.
- FIG. 3 shows a further mode of action of the proposed idea in which, in another perspective, a set of upper and lower straightening rolls 2, 3 is shown which are in engagement with the material 6 to be straightened.
- an upper and a lower straightening roller 2, 3 is significantly abraded, which marks the reduced diameter d from the original diameter D. is.
- Each straightening roller 2, 3 has its own drive 10 (see Figure 1), via which the speed and the torque are controlled.
- Each straightening roller 2, 3 has its own employment to adjust the immersion depth - ie the complete vertical adjustment - regardless of the bending over the roll barrel.
- On the representation of the support rollers and bending cylinder has been omitted in Figure 3 for reasons of simplicity.
- the schematic representation shows that in the worn straightening rollers, the machine control 7 positions the employment such that a necessary for the straightening immersion depth is achieved, even if there is wear. This is achieved by increasing the setting stroke by the wear value - in this case the diameter difference.
- the drive specifications regarding torque and / or rotational speed are corrected by the machine control 7 for the worn straightening rollers so that the smaller straightening roller diameter is compensated.
- the straightening task can be carried out optimally.
- the adjustment and the individual drive act as a means of compensating for wear, whose adjustment values / setting values have been corrected.
- the proposed concept initially serves to set the plant before carrying out a straightening process.
- the wear state of the tools must be determined by means of suitable procedures. Subsequently, the necessary correction value or a compensation parameter is calculated which results in a new setting parameter / setting value which is changed in comparison with the unworn tool.
- the machine controller 7 passes on the corrected setting parameters to the individual tools so that their operating parameters, the so-called tool functions, are set.
- the arithmetic unit for determining correction values and the machine control can be separate units (see FIG. 3), but they can also be integrated into a common unit (see FIG. 2).
- the unshaped tools receive a correction value of "zero", ie the originally provided setting is not corrected
- the basic procedure for setting the roller leveling machine is not discussed in more detail here, since this is well known in the prior art.
- the central objective here is rather to solve the problem of wear and its integration into the plant composition.
- worn and unworn tools can be used in a straightening machine at the same time without sacrificing the quality of the straightening process.
- Wear detection can be performed manually after manual measurement by the operator.
- a possible automated process step of the determination of wear consists in the determination of the wear on a target actual value comparison of process set values to measured process actual values and from the conclusion on wear. In this case, deviating values of straightening force, torque, springing etc. can be used.
- the measurement can be carried out in the form of distance measuring, force measuring and / or pressure measuring systems with appropriate built-in straightening sensor.
- Another possible automated method step for determining wear can be carried out in the form of an empirical determination of wear values.
- the determination of the wear can be made via a plant calibration by comparing the results of a performed plant calibration with the results of one or more previous plant calibrations.
- the determination / calculation of the correction values is carried out in a separate calculation unit or directly by the machine controller 7. This depends on the detailed configuration of the plant automation and plant control.
- the calculation of the correction values is preferably carried out by a technological straightening machine model which calculates the setting values (also setting) and the wear-related correction values for setting.
- a long-term and / or short-term adaptation of the straightening machine model taking into account the wear parameters represents a further improvement. This can take place in the form of a separate wear model independently of the straightening machine model or the straightening machine model has an implemented wear model.
- the machine control 7 presets the setting of the system, ie the targeted transmission of the operating positions and operating values to the respective tools.
- the diameter deviation from the desired value must be detected in a first step. Subsequently, the straightening process is calculated with the corrected diameter value, so that the necessary setting parameters, including the special correction values, result.
- both the insertion depth is set by adjusting the straightening roller 2, 3 with a corrected setting parameter and also a corrected setting parameter for the rotational speed and / or the torque of the roller drive.
- the wear forms are assigned a preferred correction of a tool function. Preferably wear is corrected over the entire straightening roller bales by the employment of the straightening roller and its speed, local wear of Straightening rolls corrected by the bending cylinder and the leveling roll speed, wear of support rollers corrected by the employment and / or the bending cylinder. Further combinations are possible.
- the roller leveler has means for wear detection, z. B. in the form of the above-mentioned sensors. It also has the means for compensating for wear.
- These means for compensation preferably consist of a combination of single-roll jobs - so the ability to individually adjust each straightening roller in their depth of immersion - in conjunction with single-roller drive (ie an individual drive train with adjustable speed and torque).
- a bending system for each straightening roller is provided, with which the contour of the straightening roller can be influenced in order to specifically correct local wear (see the reference numeral 9 in FIG. 1).
- Another feature for improving the straightening result is the load balancing control of the individual adjacent straightening roller drives. Thus, unwanted torque distortions or speed distortions are compensated.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Straightening Metal Sheet-Like Bodies (AREA)
Abstract
Description
Claims
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 true EP3595823A1 (de) | 2020-01-22 |
| EP3595823B1 EP3595823B1 (de) | 2020-11-04 |
Family
ID=68357870
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP18710849.3A Active EP3595823B1 (de) | 2017-03-13 | 2018-03-12 | Verfahren zum betreiben einer rollenrichtmaschine und rollenrichtmaschine |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20200230677A1 (de) |
| EP (1) | EP3595823B1 (de) |
| JP (1) | JP2020508880A (de) |
| CN (1) | CN110418683B (de) |
| DE (1) | DE102018203638A1 (de) |
| WO (1) | WO2018166929A1 (de) |
Families Citing this family (7)
| 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 |
| CN115138716B (zh) * | 2022-07-01 | 2025-07-29 | 太原科技大学 | 一种基于屈服强度变化的动态pid板材矫直方法 |
| CN116880272B (zh) * | 2023-07-06 | 2025-04-29 | 中冶南方工程技术有限公司 | 矫直机控制系统 |
| CN119026283A (zh) * | 2024-10-31 | 2024-11-26 | 南昌理工学院 | 一种矫直辊磨损预测方法、系统、计算机及存储介质 |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1930349A1 (de) | 1969-06-14 | 1970-12-17 | Siemag Siegener Maschb Gmbh | Richtwalzenantrieb fuer Blechrichtmaschinen |
| JPS5997719A (ja) * | 1982-11-29 | 1984-06-05 | Mitsubishi Heavy Ind Ltd | テンシヨンレベラの補正方法 |
| JPH05111716A (ja) * | 1991-10-21 | 1993-05-07 | Kawasaki Steel Corp | ローラーレベラーの操業方法 |
| DE4200922A1 (de) | 1992-01-16 | 1993-07-22 | Schloemann Siemag Ag | Verfahren und vorrichtung zum richten von blech |
| JP3485768B2 (ja) * | 1997-10-01 | 2004-01-13 | 新日本製鐵株式会社 | ローラレベラの剛性測定方法および各ロール位置の設定方法 |
| JP3392758B2 (ja) * | 1998-08-24 | 2003-03-31 | 株式会社栗本鐵工所 | 歪矯正方法及びその装置 |
| CN200945495Y (zh) * | 2005-05-12 | 2007-09-12 | 张挺胜 | 带冷却装置的辊式矫正机热态工作辊 |
| US20150013418A1 (en) * | 2012-02-13 | 2015-01-15 | Jp Steel Plantech Co. | Roller leveler and sheet-material flattening method |
| DE102013207307A1 (de) | 2013-04-23 | 2014-10-23 | Sms Siemag Ag | Richtmaschine mit Einzelanstellung und Wechselvorrichtung |
| EP2839892A1 (de) * | 2013-08-23 | 2015-02-25 | Siemens Aktiengesellschaft | Verfahren zur Bearbeitung von Walzgut in einer Walzstraße und Walzstraße |
| JP5994762B2 (ja) * | 2013-10-24 | 2016-09-21 | Jfeスチール株式会社 | ローラレベラの校正方法 |
| JP5994770B2 (ja) * | 2013-12-26 | 2016-09-21 | Jfeスチール株式会社 | 鋼板の矯正方法及び矯正装置 |
| CN204135070U (zh) * | 2014-09-24 | 2015-02-04 | 首钢京唐钢铁联合有限责任公司 | 一种六辊单机架平整机 |
| DE102015213788A1 (de) | 2015-07-22 | 2017-01-26 | Sms Group Gmbh | Anlage und Verfahren zum Beseitigen von Planheitsfehlern eines metallischen Flachprodukts |
| DE102015216387A1 (de) | 2015-08-27 | 2017-03-02 | Sms Group Gmbh | Richtmaschine mit modular aufgebautem Wechselkassettensystem |
-
2018
- 2018-03-12 WO PCT/EP2018/055992 patent/WO2018166929A1/de not_active Ceased
- 2018-03-12 DE DE102018203638.1A patent/DE102018203638A1/de not_active Withdrawn
- 2018-03-12 US US16/489,965 patent/US20200230677A1/en not_active Abandoned
- 2018-03-12 EP EP18710849.3A patent/EP3595823B1/de active Active
- 2018-03-12 JP JP2019548563A patent/JP2020508880A/ja active Pending
- 2018-03-12 CN CN201880018291.3A patent/CN110418683B/zh not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| US20200230677A1 (en) | 2020-07-23 |
| JP2020508880A (ja) | 2020-03-26 |
| CN110418683A (zh) | 2019-11-05 |
| DE102018203638A1 (de) | 2018-09-13 |
| CN110418683B (zh) | 2021-01-15 |
| WO2018166929A1 (de) | 2018-09-20 |
| EP3595823B1 (de) | 2020-11-04 |
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