EP3544767A1 - Verfahren zum schleifen der kontur des ballens einer walze - Google Patents
Verfahren zum schleifen der kontur des ballens einer walzeInfo
- Publication number
- EP3544767A1 EP3544767A1 EP17787152.2A EP17787152A EP3544767A1 EP 3544767 A1 EP3544767 A1 EP 3544767A1 EP 17787152 A EP17787152 A EP 17787152A EP 3544767 A1 EP3544767 A1 EP 3544767A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- contour
- bale
- grinding
- roll
- grindstone
- 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
- 238000000034 method Methods 0.000 title claims abstract description 54
- 238000012937 correction Methods 0.000 claims abstract description 42
- 238000005096 rolling process Methods 0.000 claims abstract description 6
- 239000002184 metal Substances 0.000 claims abstract description 5
- 239000004575 stone Substances 0.000 claims description 31
- 238000004364 calculation method Methods 0.000 claims description 29
- 230000008569 process Effects 0.000 claims description 16
- 230000007704 transition Effects 0.000 claims description 9
- 238000005259 measurement Methods 0.000 claims description 7
- 230000007547 defect Effects 0.000 claims description 3
- 238000013213 extrapolation Methods 0.000 claims description 3
- 238000005299 abrasion Methods 0.000 claims description 2
- 230000006978 adaptation Effects 0.000 description 4
- 239000007787 solid Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000007620 mathematical function Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000005201 scrubbing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/02—Shape or construction of rolls
- B21B27/021—Rolls for sheets or strips
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B28/00—Maintaining rolls or rolling equipment in effective condition
- B21B28/02—Maintaining rolls in effective condition, e.g. reconditioning
-
- 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
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/25—Drives or gearings; Equipment therefor for compensating grinding wheel abrasion resulting from dressing
-
- 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
-
- 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
- B24B5/16—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 peculiarly surfaces, e.g. bulged
- B24B5/167—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 peculiarly surfaces, e.g. bulged for rolls with large curvature radius, e.g. mill rolls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
- B21B13/14—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories having counter-pressure devices acting on rolls to inhibit deflection of same under load; Back-up rolls
- B21B13/142—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories having counter-pressure devices acting on rolls to inhibit deflection of same under load; Back-up rolls by axially shifting the rolls, e.g. rolls with tapered ends or with a curved contour for continuously-variable crown CVC
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/02—Shape or construction of rolls
- B21B27/021—Rolls for sheets or strips
- B21B2027/022—Rolls having tapered ends
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2267/00—Roll parameters
- B21B2267/18—Roll crown; roll profile
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B28/00—Maintaining rolls or rolling equipment in effective condition
- B21B28/02—Maintaining rolls in effective condition, e.g. reconditioning
- B21B28/04—Maintaining rolls in effective condition, e.g. reconditioning while in use, e.g. polishing or grinding while the rolls are in their stands
Definitions
- the invention relates to a method for grinding the contour of the bale of a roll, in particular a roll with a roll contour with a steep curve in a roll stand for rolling metal strip.
- the invention relates to a ground according to the method roll bale contour.
- Roll grinding machines with which grinding errors can be reduced or grinding times can be shortened are disclosed in German Offenlegungsschrift DE 37 26 055 A1 and German Utility Model DE 297 21 000 U1.
- the flank or edge of a grinding wheel is frequently used for grinding in the normal grinding process.
- constructions are proposed in the two cited documents as to how the grinding wheel can be pivoted, so that the grinding surface can be adjusted tangentially adjusted along the roll contour and guided over the bale of a roll.
- the mechanism for pivoting the grinding wheel is very expensive, since it must be performed as free of play.
- the grinding angle is mechanically limited. Steep transitions, as occur, for example, in the region of the edges or edges of the roll bale, in particular a support roll and, in particular, bale edges with a regrind, can not be traced or adapted with the known devices. Despite swiveling grinding wheels, grinding errors still occur there.
- FIG. 4 illustrates how a grinding error can occur with curved contours. If the grinding stone 200 or the grinding wheel is guided so that its center follows the desired contour S (x) for the bale 110 of the roller 100, then the flanks or edges of the wheel follow Abrasive unwanted additional material from the bale 1 10 of the roller. The grindstone penetrates into the desired contour. Especially at steep transitions and in the edge areas of the roll bale are the Grinding error e largest; see the resulting dashed curve E (x) in Figure 4.
- the target contour S (x) is shown in Figure 4 as a solid black line. During the grinding process, although the position or the grinding stone path can be corrected to minimize deviations or errors. However, this is associated with additional grinding and grinding time.
- the invention has for its object to improve a known method for grinding the contour of the bale of a roller to the effect that grinding errors and grinding times are minimized as possible and in this way the desired target contour for the bale of the roller is achieved more accurately and faster.
- Another object of the invention is to provide a roller whose contour corresponds as accurately as possible to the predetermined nominal contour.
- the core idea of the present invention is to determine a suitable grindstone web for guiding the grindstone. Due to the claimed superposition of the desired final contour for the bale with a correction curve, which represents a previously determined grinding error, it is advantageously achieved that in particular the dimensions and the shape of the grinding stone are taken into account in the calculation of the grinding stone web. In this way and because the grinding stone web calculated according to the invention is already available before the beginning of a grinding process, grinding-related deviations from the desired contour of the bale of the roll can be avoided.
- the inventive method further reduces the grinding time required for grinding the bale contour compared to the prior art.
- the term "dynamic calculation of the contour” means that the correction curve can possibly be adapted between individual grinding passes, if an intermediate measurement of the ground contour does not yet show the desired result
- the specification or the calculation rule for the contour of the grinding surfaces of the grinding stone used is adapted if the predetermined or calculated contour of the grinding surfaces is different from the actual grinding or grinding surface , for example, by measuring determined contour of the grinding surfaces of the grindstone.
- an analog advantageously can be carried out an adaptation of the further calculation rule for calculating the correction curve when the target contour for d Bale the roller from the actual, z. B. deviates by measurement after a grinding process determined contour for the bale of the roller. Both adaptations advantageously also bring about a reduction of the grinding error.
- the object of the invention is achieved by the device according to claim 16 device.
- FIG. 1a shows the desired contour of the bale of the roller, the roller contour without correction, the grinding error and the inventive grinding stone track for guiding the grinding stone;
- FIG. 1b shows the grinding error and the correction according to the invention
- FIG. 2 shows the determination according to the invention of the grinding stone web for guiding the
- FIG. 3 shows a calculated or measured grindstone contour
- FIG. 4 illustrates a grinding stone web with resulting grinding defects according to the prior art.
- the invention will now be described in detail in the form of embodiments with reference to said figures.
- the same technical elements or functions are designated by the same reference numerals.
- FIG. 1 a shows three curves over the roller length coordinate x.
- the desired contour S (x) for the bale 1 10 of the roller 100 is shown, as it is desired after completion of at least one grinding operation.
- the nominal contour is shown as a solid black line.
- the grindstone is designated by reference numeral 200.
- the dashed line shows the contour of the bale of the roll after grinding, if the center of the grindstone 200-M along the desired target contour S (x) of the bale 1 10 of the roller would be performed.
- the resulting roller contour E (x) without correction deviates significantly from the desired Nominal contour S (x) of the bale; Thus, the difference e between the two curves / contours describes the grinding error.
- the present invention provides that the whetstone 200 with its whetstone center 200-M is corrected by the correction function C (x) and guided on a grindstone path D (x), which differs from the desired contour S (x) the bale (1 10) of the roller deviates.
- This grindstone track D (x) is shown in dotted lines in FIG. It can be seen that with appropriate guidance of the grindstone 200 along the inventively determined grindstone track D (x), the grindstone just touches the desired contour, but does not penetrate.
- Both curves are schematically simplified in Figure 1 b insofar as they at least partially z. B. be described by predetermined straight-line equations. In practice, such simplifications may well be sufficient to at least reduce the unwanted grinding error with sufficient accuracy.
- FIG. 2 describes the method according to the invention for determining the grindstone track D (x) for guiding the grindstone 200.
- the starting point for the method according to the invention is first of all specifying a desired contour S (x) for the bale 1 10 of the roller 100.
- the chamfering function may, for. B. to a radius or polynomial function and the bale contour function by, for example, a polynomial function or an angular function. As can be further seen in FIG.
- the term encompasses "Bale of the roll” preferably comprises the left edge region, the middle region and the right edge region of the bale 110 of the roll, ie, not only its central region .
- all functions and contours for the bale shown in Figure 2 preferably comprise at least one contour section for the right edge region at least one contour section for the central region of the roll bale and at least one contour section for the left edge region of the roll bale
- the chamfering function A (x) is constant in the central area of the roll bale and pronounced only in the left and right margins, ie, deviates from 0.
- the bale contour function B (x) is in harmony with the target contour S (x) Chamfering the steep transition Length in the edge region of the roll bale. For the sake of simplicity and clarity, therefore, only the ground deviations in the edge regions are compensated in FIG. This grinding error is determined according to the invention, as will be explained in more detail below.
- the method according to the invention then further provides for the calculation of a correction curve C (x) over at least individual longitudinal sections of the bale in the axial direction, wherein the correction curve avoids the grinding error.
- the method according to the invention provides for the calculation of the grinding stone web D (x) to guide the grinding stone.
- the initial roll contour can also be more accurately produced in the middle area of the roll bale by ascertaining the grinding errors (minor defects) according to the above method of the corrected grinding stone web.
- the system then switches over to the adaptation method, thus combining the grinding error compensation method (specification of the grinding stone path) and the adaptation method for grinding.
- the contour 200-f of the grinding surfaces of the grindstone 200 used across the width 200-b of the grindstone may be predetermined or calculated using a calculation rule taking into account at least one of the following aspects:
- a grindstone abrasion model which calculates the wear of the grindstone 200 as a function of the hardness of the grindstone and grindstone as well as the roll contour and the ground bale length; the measured grindstone contour 200-f after a defined number of intermediate steps;
- FIG. 3 clearly shows an example of a predetermined or calculated contour of the grinding surfaces of a grinding stone.
- the contour can be described at least in sections by individual mathematical functions.
- B different flank and edge shapes on the left and right sides of the grindstone.
- An initial presetting of the grinding stone contour for the different widths ranges 1-4 can additionally improve the grinding results and achieve a uniform wear of the grinding stone. This also allows the use of wider and harder or more wear-resistant grinding stones.
- the calculation of the contour 200-f of the grinding surfaces of the grinding stone 200 can take place with the aid of the calculation rule before the beginning of the grinding process and / or during the grinding process after defined grinding stages or dynamically.
- the calculation rule for the contour 200-f of the grinding surfaces of the grinding stone used is preferably adapted if the contour of the grinding surfaces of the grinding stone resulting from the calculation specification differs from the actual, e.g. determined by measurement contour 200-f of the grinding surfaces of the grindstone 200 deviates.
- the determination of the grinding error e or E (x) is preferably carried out for at least individual areas of the bale 10 of the roller 100 and preferably after a grinding operation by carrying out the following steps: measuring the actual contour of the bale 1 10 after the last grinding operation; and calculating the possible grinding error E (x) as a deviation between the nominal contour A (x) + B (x) and the actually measured contour of the bale 10 of the roller 100. Based on the theoretical or measured grindstone contour 200-f and other influencing variables (see below), the expected grinding error e or E (x) or / and the correction function C (x) over the entire bale length is determined or / and above all the contour of the grindstone path D (x), which avoids the expected flail error over the bale length.
- the correction curve C (x) is then preferably determined by interpolation or extrapolation of a plurality of the determined function values C (xi).
- the calculation of the correction curve C (x) over the length x of the bale 1 10 of the roller is preferably carried out including reversal distances of the grindstone left and right of the edge of the bale 1 10.
- the calculation of the correction curve C (x) can take place before the beginning of the grinding process and / or during the grinding process according to defined grinding stages or dynamically.
- the calculated values can be adapted by comparing the calculated and measured roll contour.
- grinding errors in the area of the bale edge can be advantageously determined, in addition to the roll contour measurement of the grinding machine, in addition to a separate roll measuring device in the case of steep curves.
- the further calculation rule for calculating the correction curve C (x) is preferably adapted when the target contour for the bale 1 10 of the roller deviates from the actual, for example determined by measurement after a grinding operation contour for the bale 1 10 of the roller.
- the predetermined target contour for the bale 1 10 of the roller is formed by superposition of a predetermined bale contour function B (x), for example in the form of a polynomial function or angle function, and a chamfering function A (x), for example in the form of a radius or polynomial function.
- the chamfering function A (x) for the central region of the roll bale 110 is preferably constant, more preferably zero.
- the method can be applied to work and back-up rolls.
- the method is important in rolling contours with steep curves, as they occur in roll grinding with large profile adjustment area or Stützwalzenkanten Wegschliffen (chamfers).
- E (x) flaw error function bale contour after faulty grinding S (x), S '(x) nominal contour of roll bale
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016222987.7A DE102016222987A1 (de) | 2016-11-22 | 2016-11-22 | Verfahren zum Schleifen der Kontur des Ballens einer Walze |
PCT/EP2017/076223 WO2018095655A1 (de) | 2016-11-22 | 2017-10-13 | Verfahren zum schleifen der kontur des ballens einer walze |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3544767A1 true EP3544767A1 (de) | 2019-10-02 |
EP3544767B1 EP3544767B1 (de) | 2020-05-20 |
Family
ID=60143694
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17787152.2A Active EP3544767B1 (de) | 2016-11-22 | 2017-10-13 | Verfahren zum schleifen der kontur des ballens einer walze |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP3544767B1 (de) |
JP (1) | JP6814291B2 (de) |
CN (1) | CN109996650B (de) |
DE (1) | DE102016222987A1 (de) |
WO (1) | WO2018095655A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113688501B (zh) * | 2021-07-16 | 2022-04-15 | 北京科技大学 | 一种兼顾多种宽度板带轧制的变接触支持辊辊形设计方法 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1501669A (en) * | 1975-05-12 | 1978-02-22 | Scott Paper Co | Apparatus and method for resurfacing the cylindrical face of large drier drums |
DE3620197A1 (de) | 1986-06-16 | 1987-12-17 | Schloemann Siemag Ag | Walzwerk zur herstellung eines walzgutes, insbesondere eines walzbandes |
DE3726055A1 (de) | 1987-08-06 | 1989-02-16 | Schloemann Siemag Ag | Verfahren zum schleifen von walzen mit gekruemmter kontur |
DE19532222C2 (de) * | 1995-09-01 | 2002-05-02 | Vosswinkel Steuerungstechnik G | Verfahren zum Herstellen von Walzenkonturen |
DE29721000U1 (de) | 1997-11-27 | 1998-02-05 | Waldrich Siegen Werkzeugmaschinen GmbH, 57299 Burbach | Walzenschleifmaschine |
UA92946C2 (uk) | 2006-06-14 | 2010-12-27 | Сіменз Ваі Металз Текнолоджіс Гмбх Енд Ко | Кліть прокатного стана для виготовлення катаних металевих штаб або катаного листового металу |
DE102010014867A1 (de) * | 2009-04-17 | 2010-11-18 | Sms Siemag Ag | Verfahren zum Bereitstellen mindestens einer Arbeitswalze zum Walzen eines Walzguts |
DE102015000974A1 (de) * | 2015-01-23 | 2016-07-28 | Liebherr-Verzahntechnik Gmbh | Verfahren und Vorrichtung zur Verzahnbearbeitung eines Werkstückes durch ein Diagonalwälzverfahren |
DE102015203735B4 (de) * | 2015-03-03 | 2016-11-03 | P + L Gmbh & Co. Kg | Verfahren zur automatischen Verschleißkorrektur bei der Bearbeitung eines Werkstücks mittels eines rotierenden Schleifwerkzeugs in einer CNC-gesteuerten Werkzeugmaschine |
-
2016
- 2016-11-22 DE DE102016222987.7A patent/DE102016222987A1/de not_active Withdrawn
-
2017
- 2017-10-13 JP JP2019527388A patent/JP6814291B2/ja active Active
- 2017-10-13 WO PCT/EP2017/076223 patent/WO2018095655A1/de unknown
- 2017-10-13 CN CN201780072360.4A patent/CN109996650B/zh active Active
- 2017-10-13 EP EP17787152.2A patent/EP3544767B1/de active Active
Also Published As
Publication number | Publication date |
---|---|
WO2018095655A1 (de) | 2018-05-31 |
CN109996650B (zh) | 2021-08-10 |
JP6814291B2 (ja) | 2021-01-13 |
CN109996650A (zh) | 2019-07-09 |
DE102016222987A1 (de) | 2018-05-24 |
EP3544767B1 (de) | 2020-05-20 |
JP2019536645A (ja) | 2019-12-19 |
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