EP1333941B1 - Device and method for calibrating a multiple-roller flattener - Google Patents
Device and method for calibrating a multiple-roller flattener Download PDFInfo
- Publication number
- EP1333941B1 EP1333941B1 EP01996438A EP01996438A EP1333941B1 EP 1333941 B1 EP1333941 B1 EP 1333941B1 EP 01996438 A EP01996438 A EP 01996438A EP 01996438 A EP01996438 A EP 01996438A EP 1333941 B1 EP1333941 B1 EP 1333941B1
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- EP
- European Patent Office
- Prior art keywords
- leveler
- plate
- roll
- gauges
- rolls
- 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.)
- Expired - Lifetime
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Classifications
-
- 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
-
- 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
-
- 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
- B21D1/05—Stretching combined with rolling
Definitions
- the present invention relates to a device and a calibration process of a multi-roller leveler.
- Multi-roller levelers are used as as finishing tools for flattening sheets metallic steel.
- the general principle of planing by multi-roller levelers, especially leveling under tension, consists in passing the sheet or strip to hover between two series of parallel rollers arranged so as to be nested within each other, the nesting being decreasing in the direction of sheet metal scrolling. During its passage between the rollers, the sheet is bent alternately one way then the other. The bending amplitude decreases from the entry of the leveler towards the exit, from so that the steel strip is subjected to a succession of alternating constraints suitable for removing or at least greatly reduce the internal stresses causing flatness defects.
- the gradual decrease in the amplitude of the deformations provides the output leveler a strip as flat as possible and with the less possible internal constraints.
- the strip is driven through the leveler between a supply reel and a reel receptor by āSā drive blocks which cause it to scroll, ensuring moreover a traction on the strip.
- FIG. 1 there is shown schematically such a leveler, comprising a set of lower rollers 11, and a set of upper rollers 12, carried respectively by a lower bed base 13 and an upper bed base 14.
- the band metallic 10 scrolls in the leveler between two blocks motorized 31, 32 of drive drums and traction arranged in "S", in the direction of arrow F.
- the rollers are all parallel and offset in the direction of travel of the strip between the top and the low, so that they can be more or less nested within each other.
- the strip is relatively strongly deformed by bending alternated between the input rollers 11a, 12a, 11b, etc. which are strongly nested, while in the area the deformations are very small because the output rollers 11m, 12m, 11n are little or not at all all nested.
- FIG. 2 there is shown also schematically an example of ways to leveler adjustment, to adjust the nesting of rolls.
- the upper box spring 14 is supported on a frame upper 15 by sets of adjustments 16a, 16b, 16c, 16d, for example of the screw-nut type with return angle, respectively arranged two sets 16a, 16b towards the entry of the leveler and the other two 16c, 16d towards the exit, and on each side in the direction longitudinal.
- the two input adjustment assemblies 16a, 16b are connected by a drive shaft 17a and a coupling 18a, and driven together by a motor entry 19a.
- the two sets of adjustment of output 16c, 16d are connected by a drive shaft 17b and a coupling 18b, and driven together by a output motor 19b.
- the couplings 18a, 18b allow temporarily uncoupling the sets of settings that they link, to be able to adjust the parallelism transverse, or "wobbling", between the rollers lower and upper, and this as input as exit from leveler. Then the adjustment of the nests rollers of the leveler is carried out by means of motors that drive simultaneously and so identical to the adjustment sets, either at the input of leveler, or exit.
- the parallelism or sway adjustment is not carried out only in the event of major interventions on the leveler.
- Calibration of the leveler is carried out more commonly, to readjust the nestings of the rollers, or modify them according to the characteristics of the planed bands.
- FIG 3 there is also shown schematically the leveler, in front view, for show the means of adjusting the bending or bending rollers.
- the leveling rollers are actually supported by support rollers, themselves supported by backing rollers.
- This set is mounted in a chassis called cassette placed on a set of shims bias or actuators or even against supports independent and adjustable in height, distributed over the width of the leveler.
- the position vertical support rollers can be adjusted to 22 adjustable wedges, each acting under all of the support rollers located on a same line parallel to the running of the strip and on the entire length of the leveler.
- the shape of the rollers gliders therefore depends on the vertical position of the rollers of counter support.
- FIG. 5 An example of an adjustable counter-support system is shown in Figure 5.
- the height of the counter-support is adjustable by means of wedges 23 interposed between the support rollers and a frame rigid lower 15 'and sliding one over the other.
- the relative displacement of the bias wedges is effected by a cylinder 24, and can be measured for example by a sensor position 25.
- the object of the present invention is to resolve the problems previously mentioned. It aims in particular to allow to determine with better precision the characteristics of a multi-roller leveler, performing a load, reproducible and under calibration known efforts. It also aims to determine the ceding of the overall leveler, under different loads, so that these values can be integrated into setting models. It still aims to determine with more precision the influences of the settings of counter-supports, so as to fine-tune the settings of these and be able to correct the transverse ceding of soaring rollers, to finally get a better flatness of the planed strips.
- the object of the invention is a device for calibrating a multi-roller leveler for planing a metal strip, comprising an assembly of lower rollers and a set of rollers upper, arranged substantially parallel, perpendicular to the leveling direction according to which scrolls the strip to be leveled.
- the device is characterized in what it has a metal measuring plate, especially with high elastic limit, of suitable size to be positioned between the roller assembly upper and lower roller assembly in extending substantially over the entire length of said rollers, the said plate comprising means for positioning to ensure its positioning by relative to the rollers in the leveling direction, and strain gauges to measure strains elastic of the plate, the so-called strain gauges being fixed on the plate so as to form several transverse rows of gauges each located at plumb with one of the said rollers, on the face of the plate opposite the said roller.
- the invention also relates to a method of calibration of a multi-roller leveler, using the device according to the invention, characterized in that places the measuring plate in the leveler, positioned by means of positioning so that each gauge row is located directly above a roller, and the two sets of rollers are brought together, one of the other so as to exert a clamping force on the measuring plate, and we measure by means of said gauges the deformations undergone by the plate to the right of each roller located directly above the gauges, to deduce the clamping force applied by the rollers to the right of each gauge, as well as the actual tightening between rollers.
- strain gauges placed vertically rollers we can measure the deformations of bending of the surface of the plate, caused by the support rolls on the plate, and deduce from it, knowing the mechanical characteristics of the plate, the intensity support force at each gauge. From of these measures, so we can have knowledge specifies the characteristics of the leveler, from the point of view of the geometry of the leveling path defined between the rolls.
- the plate has at least one row of gauges located so to be placed directly above one of the rollers located towards the entry of the leveler, and a row of gauges located so as to be placed directly above one of the rollers exit.
- We can thus determine the clamping forces in and out of the leveler, for example accordingly initialize the command motors of the position of the upper box spring, in a position corresponding to identical tightening at input and output, to then be able to assess the tightening gap real between input and output, and therefore the difference nesting between the input rollers and the output rollers. Note that we will not place the gauges to the right of the first roller, upper or lower, nor to the right of the last upper roller or lower, so measurements will only be made to the right of rolls loaded only substantially vertically.
- a row of gauges has at least one gauge located in the center line and a gauge on each side towards the edges of the leveler, which makes it possible to determine, and therefore to correct, if necessary, differences in tightening between the sides of the leveler. In combination with measures mentioned above, it becomes possible to detect, and therefore also correct, swaying of the leveler.
- a row of gauge has a central gauge and several gauges lateral, arranged so as to be each located at plumb with each counter-support of the leveler.
- the invention also makes it possible to understand the glider behavior under load, determining the overall clamping force in different positions measured by the tightening control means, and deducing a yield curve from the leveler, which can then be taken into account to perform the presets for work, depending on dimensional and mechanical characteristics of the bands to hover, and depending on the importance of nesting rollers required to correct known defects said bands, for example.
- the overall clamping force determined from all the measurements made by all the gauges we could also appreciate variations in tightening more localized, to distinguish for example the cedage clean of each column of the leveler, or to follow independently the behavior of the counter-supports during load variations.
- the instrumented plate according to the invention is typically a high-grade steel plate elastic limit, for example of 1000 MPa, and of thickness for example of the order of 0.7 mm, in any case of thickness very much higher than that of the bands to be leveled, which typically have a thickness of 0.1 to 0.2 mm per example.
- the means of positioning have at least two sets of positioning gauge respectively arranged towards each side edge of the plate, the farthest possible from each other, directly below the same roller, to precisely determine the positioning of the plate relative to this roller in the leveling direction, and therefore the relative position of all rows of measurement gauges relative to their respective rolls.
- the positioning gauges are preferably gauges of the type known as "chains", conventionally constituted under the form of a set of five strain gauges associated online over a global length of the order of centimeter. Each chain is precisely glued on the face of the plate opposite to a working roller, so that the center line of the chain gauge is perfectly in line with the axis of said roller.
- the positioning of the plate is done in observing the signals from each gauge of the chain, until a symmetry is obtained on the gauges located on each side of the central gauge of a part and until detection of a maximum by the gauge central on the other hand, significant of the location of this one just below the axis of the roller, where the curvature of the plate is most pronounced.
- the instrumented plate 5 given by way of example and produced for a particular type of multi-roller leveler, shown in Figure 6 is typically a plate made of sheet steel with high elastic limit, thickness 0.7 mm and 500 mm in the direction of leveling and 1 m in the transverse direction. She wears several rows of gauges deformation 50 bonded to the surface of the sheet, as follows:
- a first row 51 of gauges is located on the upper side, to be positioned directly above the second lower roller 11b, as shown in the figure 7.
- a second row 52 of gauges is placed so similar to the penultimate penultimate roll inferior.
- a third row 53 is preferably placed at the level of a median roller of the series of roller.
- Each of these rows has seven gauges, such that the gauges 51a, 51b, 51c, 51f, 51i, 51j, 51k, of the first row, respectively placed directly above the counter-supports 22a, 22b, 22c, 22f, 22i, 22j, 22k.
- gauges are placed opposite bottom of plate 5, such as a row of 54 gauges placed directly above the second upper roller 12b, a row 55 placed directly above the penultimate upper roller, and a row 56 placed vertically of a middle roller of the series of upper rollers.
- Each of these rows comprises for example three gauges, placed respectively in line with the counter-supports 22b, 22f, and 22d.
- gauges of positioning 61, 62 made up of chains of five gauges aligned in the leveling direction, of the type known per se, and whose central gauge is located precisely on line 54.
- the plate 5 also has two stops adjustable 60, each comprising a fixed part 63 secured to plate 5 and a movable part 64 adjustable relative to the fixed part, for example by a micrometric screw, the end of which is positioned so as to abut against the first lower roller, as shown in figure 7.
- the tightening measurements can then be carried out means of the various gauges.
- Such a yield curve can then be integrated in the adjustment parameters of the leveler.
- the graph in Figure 9 shows, by example, the profile of the rollers entering a leveler.
- Route 71 corresponds to an adjustment of the counter-supports at 0; plot 72 at a setting at -0.05 mm; route 73 to an adjustment to -0.1 mm.
- Each point of the plots corresponds to a measurement gauge, and the values indicated in ordered represent the clamping of the rollers on the plate, determined from the measurements made.
- the invention is not limited to the mode of realization of the instrumented plate described above only as an example.
- the number and the arrangement of the rows of gauges and the number of gauges per row may be modified, depending on the number of leveler rollers, number of counter supports and desired actions.
- the gauges positioning as well as the adjustable stops can be replaced by equivalent means specific to ensure the most precise positioning possible of rows of measuring gauges directly above the rollers.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Straightening Metal Sheet-Like Bodies (AREA)
- Rollers For Roller Conveyors For Transfer (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Cultivation Receptacles Or Flower-Pots, Or Pots For Seedlings (AREA)
- Sowing (AREA)
- Coating With Molten Metal (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
Description
La prƩsente invention concerne un dispositif et un procƩdƩ de calibrage d'une planeuse multi-rouleaux.The present invention relates to a device and a calibration process of a multi-roller leveler.
Les planeuses multi-rouleaux sont utilisĆ©es en tant qu'outils de parachĆØvement pour aplanir des tĆ“les mĆ©talliques en acier. Le principe gĆ©nĆ©ral du planage par des planeuses multi-rouleaux, en particulier du planage sous traction, consiste Ć faire passer la tĆ“le ou bande Ć planer entre deux sĆ©ries de rouleaux parallĆØles disposĆ©s de maniĆØre Ć ĆŖtre imbriquĆ©s les uns dans les autres, l'imbrication Ć©tant dĆ©croissante dans le sens du dĆ©filement de la tĆ“le. Lors de son passage entre les rouleaux, la tĆ“le est dĆ©formĆ©e en flexion alternativement dans un sens puis dans l'autre. L'amplitude de flexion dĆ©croĆt de l'entrĆ©e de la planeuse vers la sortie, de sorte que la bande d'acier est soumise Ć une succession de contraintes alternĆ©es propres Ć supprimer ou au moins fortement rĆ©duire les contraintes internes causes des dĆ©fauts de planĆ©itĆ©. La diminution progressive de l'amplitude des dĆ©formations permet d'obtenir en sortie de planeuse une bande aussi plane que possible et avec le moins possible de contraintes internes. Dans les planeuses sous traction, la bande est entraĆnĆ©e Ć travers la planeuse entre une bobine dĆ©bitrice et une bobine rĆ©ceptrice par des blocs d'entraĆnement en Ā« S Ā» qui provoquent son dĆ©filement, en assurant de plus une traction sur la bande.Multi-roller levelers are used as as finishing tools for flattening sheets metallic steel. The general principle of planing by multi-roller levelers, especially leveling under tension, consists in passing the sheet or strip to hover between two series of parallel rollers arranged so as to be nested within each other, the nesting being decreasing in the direction of sheet metal scrolling. During its passage between the rollers, the sheet is bent alternately one way then the other. The bending amplitude decreases from the entry of the leveler towards the exit, from so that the steel strip is subjected to a succession of alternating constraints suitable for removing or at least greatly reduce the internal stresses causing flatness defects. The gradual decrease in the amplitude of the deformations provides the output leveler a strip as flat as possible and with the less possible internal constraints. In the levelers under traction, the strip is driven through the leveler between a supply reel and a reel receptor by āSā drive blocks which cause it to scroll, ensuring moreover a traction on the strip.
Les tolĆ©rances de plus en plus serrĆ©es, en terme de planĆ©itĆ© et contraintes internes, exigĆ©es par les utilisateurs des bandes ou tĆ“les, conduisent Ć chercher la meilleure maĆtrise possible du fonctionnement des planeuses, avec la mise en place de prĆ©rĆ©glages et la meilleure connaissance possible des caractĆ©ristiques mĆ©caniques de la machine : jeux, cĆ©dages, paramĆØtres de rĆ©glages, etc.The increasingly tight tolerances, in terms of flatness and internal constraints, required by users of bands or sheets, lead to seek the best possible control over the functioning of levelers, with the setting of presets and the better knowledge of the characteristics machine mechanics: clearances, bends, parameters of settings, etc.
Pour mieux faire comprendre les problĆØmes que posent l'amĆ©lioration souhaitĆ©e de la maĆtrise du comportement des planeuses, on va rappeler les Ć©lĆ©ments constitutifs principaux d'une planeuse multi-rouleaux, en relation avec les figures 1 Ć 5.To better understand the problems that pose the desired improvement in the control of behavior of the levelers, we will recall the elements main components of a multi-roller leveler, relationship to Figures 1 to 5.
Sur le dessin de la figure 1, on a reprƩsentƩ
schƩmatiquement une telle planeuse, comportant un
ensemble de rouleaux infƩrieurs 11, et un ensemble de
rouleaux supƩrieurs 12, portƩs respectivement par un
sommier infƩrieur 13 et un sommier supƩrieur 14. La bande
mƩtallique 10 dƩfile dans la planeuse entre deux blocs
motorisĆ©s 31, 32 de tambours d'entraĆnement et de
traction disposĆ©s en Ā« S Ā», dans le sens de la flĆØche F.
Les rouleaux sont tous parallĆØles et dĆ©calĆ©s dans la
direction de dƩfilement de la bande entre le haut et le
bas, de maniĆØre qu'ils puissent ĆŖtre plus ou moins
imbriquƩs les uns dans les autres. Comme on le voit bien,
dans la zone d'entrƩe de la planeuse, la bande est
relativement fortement dƩformƩe par des flexions
alternƩes entre les rouleaux d'entrƩe 11a, 12a, 11 b,
etc. qui sont fortement imbriquƩs, alors que dans la zone
de sortie, les dĆ©formations sont trĆØs faibles du fait que
les rouleaux de sortie 11m, 12m, 11n sont peu ou pas du
tout imbriquƩs.In the drawing of Figure 1, there is shown
schematically such a leveler, comprising a
set of
Sur le dessin de la figure 2, on a reprƩsentƩ
Ć©galement de maniĆØre schĆ©matique un exemple de moyens de
rƩglage de la planeuse, pour rƩgler l'imbrication des
rouleaux. Le sommier supĆ©rieur 14 est soutenu sur un bĆ¢ti
supƩrieur 15 par des ensembles de rƩglages 16a, 16 b,
16c, 16d, par exemple du type vis-Ć©crou avec renvoi
d'angle, disposƩs respectivement deux ensembles 16a, 16b
vers l'entrƩe de la planeuse et les deux autres 16c, 16d
vers la sortie, et de chaque cƓtƩ dans le sens
longitudinal. Les deux ensembles de rƩglage d'entrƩe 16a,
16b sont reliĆ©s par un arbre d'entraĆnement 17a et un
accouplement 18a, et entraĆnĆ©s ensembles par un moteur
d'entrĆ©e 19a. De mĆŖme, les deux ensembles de rĆ©glage de
sortie 16c, 16d sont reliĆ©s par un arbre d'entraĆnement
17b et un accouplement 18b, et entraĆnĆ©s ensembles par un
moteur de sortie 19b.In the drawing of Figure 2, there is shown
also schematically an example of ways to
leveler adjustment, to adjust the nesting of
rolls. The
Les accouplements 18a, 18b permettent de
dƩsaccoupler temporairement les ensembles de rƩglages
qu'ils relient, pour pouvoir rƩgler le parallƩlisme
transversal, ou Ā« dĆ©hanchement Ā», entre les rouleaux
infƩrieurs et supƩrieurs, et ceci en entrƩe comme en
sortie de planeuse. Ensuite, le rƩglage des imbrications
des rouleaux de la planeuse est effectuƩ au moyen des
moteurs qui entraĆnent simultanĆ©ment et de maniĆØre
identique les ensembles de rƩglage, soit en entrƩe de
planeuse, soit en sortie.The
Le rƩglage du parallƩlisme ou dƩhanchement n'est effectuƩ qu'en cas d'interventions importantes sur la planeuse. Le calibrage de la planeuse est effectuƩ plus couramment, pour rƩajuster les imbrications des rouleaux, ou les modifier en fonction des caractƩristiques des bandes planƩes.The parallelism or sway adjustment is not carried out only in the event of major interventions on the leveler. Calibration of the leveler is carried out more commonly, to readjust the nestings of the rollers, or modify them according to the characteristics of the planed bands.
Sur la figure 3, on a reprƩsentƩ Ʃgalement
schƩmatiquement la planeuse, en vue frontale, pour
montrer les moyens de rƩglage du cintrage ou du cambrage
des rouleaux. En effet, lors du planage, les efforts de
flexion exercĆ©s sur la bande conduisent en rĆ©action Ć
provoquer des dƩformations des rouleaux de planage. Pour
compenser ces dƩformations et Ʃviter qu'elles
n'entraĆnent en retour des dĆ©fauts gĆ©omĆ©triques de la
bande, les rouleaux de planage sont en fait supportƩs par
des rouleaux de soutien, eux-mĆŖmes supportĆ©s par des
galets de contre-appui. Cet ensemble est montƩ dans un
chĆ¢ssis appelĆ© cassette posĆ© sur un ensemble de cales
biaises ou actionneurs ou encore contre appuis
indƩpendants et rƩglables en hauteur, rƩpartis sur la
largeur de la planeuse. Dans l'exemple prƩsentƩ figure 3,
il y a onze rangƩes de des galets de contre appui 21
disposƩes dans la largeur de la planeuse. La position
verticale des galets de contre appui peut ĆŖtre ajustĆ©e au
moyen de cales biaises 22 rƩglables, agissants chacune
sous tous les des galets de contre appui situƩs sur une
mĆŖme ligne parallĆØle au dĆ©filement de la bande et sur
toute la longueur de la planeuse. La forme des rouleaux
planeurs dƩpend donc de la position verticale des galets
de contre appui.In Figure 3, there is also shown
schematically the leveler, in front view, for
show the means of adjusting the bending or bending
rollers. Indeed, during planing, the efforts of
bending exerted on the strip lead in reaction to
deformation of the leveling rollers. For
compensate for these deformations and prevent them
do not in return cause geometric defects in the
strip, the leveling rollers are actually supported by
support rollers, themselves supported by
backing rollers. This set is mounted in a
chassis called cassette placed on a set of shims
bias or actuators or even against supports
independent and adjustable in height, distributed over the
width of the leveler. In the example shown in Figure 3,
there are eleven rows of
Un exemple d'un systĆØme de contre-appui rĆ©glable
est reprƩsentƩ figure 5. Dans cet exemple, la hauteur des
contre-appuis est ajustable au moyen de cales biaises 23
interposĆ©es entre les rouleaux de support et un bĆ¢ti
infƩrieur rigide 15' et glissant l'une sur l'autre. Le
dƩplacement relatif des cales biaises est effectuƩ par un
vĆ©rin 24, et peut ĆŖtre mesurĆ© par exemple par un capteur
de position 25.An example of an adjustable counter-support system
is shown in Figure 5. In this example, the height of the
counter-support is adjustable by means of
On dispose de tels systĆØmes par exemple, dans le
cas de la figure 3, pour les trois contre-appuis 22a,
22b, 22c et 22i, 22j, 22k situƩs de chaque cƓtƩ vers les
extrĆ©mitĆ©s des rouleaux, oĆ¹ les dĆ©formations sont les
plus fortes. Dans la partie centrale, il peut ne pas ĆŖtre
nƩcessaire d'utiliser de tels contre-appuis rƩglables.
Comme on le voit reprĆ©sentĆ© figure 4 de maniĆØre trĆØs
exagƩrƩe, les contre-appuis permettent, en exerƧant sous
les rouleaux un effort vertical plus ou moins important,
de dĆ©former ceux-ci, Ć vide et aussi en charge, pour que,
lors du planage, leur profil soit adaptĆ© Ć la correction
des dĆ©fauts constatĆ©s sur la bande Ć planer.We have such systems for example, in the
case of FIG. 3, for the three
Pour effectuer le rƩglage global d'une planeuse, on dispose donc :
- du rƩglage de parallƩlisme, ou dƩhanchement, de
la planeuse, c'est Ć dire en substance le rĆ©glage du
parallƩlisme entre les rouleaux infƩrieurs et les
rouleaux supƩrieurs, ce rƩglage Ʃtant effectuƩ par action
sur les vis de rƩglage de la position du sommier
supƩrieur, menƩe indƩpendamment entre les vis de rƩglage
du cĆ“tĆ© droit et du cĆ“tĆ© gauche, aprĆØs sĆ©paration des
18a, 18b.accouplements - du rĆ©glage de l'imbrication des rouleaux, en entrĆ©e et en sortie de planeuse, la valeur de l'imbrication Ć©tant en rĆØgle gĆ©nĆ©rale contrĆ“lĆ©e par une mesure de l'angle de rotation des vis de rĆ©glage de la position du sommier supĆ©rieur, ou par des capteurs de dĆ©placement entre sommiers en entrĆ©e et en sortie de planeuse,
- du rƩglage du cambrage des rouleaux, au moyen des
actionneurs tels que dƩcrits prƩcƩdemment, la valeur pour
chaque contre-appui Ʃtant dƩterminƩe par la mesure
effectuƩe par les
capteurs 25, - de la traction sur la bande, gĆ©nĆ©rĆ©e par les blocs tensionneurs en Ā« S Ā», et dont la valeur peut ĆŖtre mesurĆ©e par un tractiomĆØtre ou Ć partir des paramĆØtres Ć©lectriques des moteurs des bobines.
- de l'allongement gƩnƩrƩ lors du planage et mesurƩ par un diffƩrentiel de vitesse entre tensionneur d'entrƩe et tensionneur de sortie.
- adjustment of parallelism, or wobbling, of the leveler, that is to say in essence the adjustment of parallelism between the lower rollers and the upper rollers, this adjustment being effected by action on the screws for adjusting the position of the upper base, carried out independently between the adjustment screws on the right and on the left side, after separation of the
18a, 18b.couplings - the adjustment of the nesting of the rollers, at the entry and exit of the leveler, the value of the nesting being generally controlled by a measurement of the angle of rotation of the screws for adjusting the position of the upper bed base, or by displacement sensors between box springs at the entry and exit of the leveler,
- adjusting the camber of the rollers, by means of the actuators as described above, the value for each counter-bearing being determined by the measurement carried out by the
sensors 25, - traction on the strip, generated by the āSā tensioning blocks, the value of which can be measured by a tractiometer or from the electrical parameters of the coil motors.
- the elongation generated during planing and measured by a speed differential between the input tensioner and the output tensioner.
Par ailleurs, la gĆ©omĆ©trie exacte du chemin de passage de la bande, dont dĆ©pend la qualitĆ© du planage, dĆ©pend elle-mĆŖme des efforts gĆ©nĆ©rĆ©s lors du passage et des dĆ©formations de la bande, lesquels provoquent des dĆ©formations de la machine, appelĆ©es cĆ©dage.Furthermore, the exact geometry of the path passage of the strip, on which the quality of leveling depends, itself depends on the forces generated during the passage and deformations of the strip, which cause deformations of the machine, called yielding.
Pour pouvoir exercer un contrĆ“le efficace du planage, il est nĆ©cessaire de connaĆtre le plus prĆ©cisĆ©ment possible la position rĆ©elle des rouleaux de planage et leur gĆ©omĆ©trie en permanence lors du travail. Il faut donc pouvoir dĆ©terminer quelles sont la gĆ©omĆ©trie et la position des rouleaux en fonction de tous les autres paramĆØtres pouvant influer sur les rouleaux, c'est Ć dire les consignes fournies aux divers actionneurs et aussi les efforts gĆ©nĆ©rĆ©s susceptibles de modifier la gĆ©omĆ©trie et la position rĆ©elle des rouleaux.To be able to exercise effective control over leveling, it is necessary to know the most precisely possible the actual position of the rollers leveling and their geometry permanently during work. So you have to be able to determine what the geometry is and the position of the rollers according to all other parameters that can affect the rollers, to say the instructions provided to the various actuators and also the efforts generated likely to modify the geometry and the actual position of the rollers.
Pour pouvoir rĆ©gler en connaissance de cause la planeuse en fonction des caractĆ©ristiques des bandes Ć planer et initialiser les actionneurs, notamment les moteurs de rĆ©glages des imbrications, il est donc nĆ©cessaire de calibrer ou initialiser la planeuse, c'est Ć dire dĆ©terminer les rĆ©glages de base de la planeuse adaptĆ©s pour obtenir le planage visĆ©.In order to be able to settle the issue knowingly leveler according to the characteristics of the strips to plan and initialize the actuators, in particular the nesting adjustment engines so it's necessary to calibrate or initialize the leveler, this is to say determine the basic settings of the leveler adapted to obtain the intended leveling.
Il est Ć©galement fortement souhaitable de pouvoir Ć©tablir une relation entre les valeurs de rĆ©glages contrĆ“lables par les actionneurs disponibles et les modifications gĆ©omĆ©triques du chemin de planage en cours d'opĆ©ration, autrement dit de connaĆtre le cĆ©dage de la planeuse et en tenir compte dans le rĆ©glage des moteurs d'imbrication pour en quelque sorte compenser Ć l'avance le cĆ©dage qui sera subi lors du travail rĆ©el.It is also highly desirable to be able to establish a relationship between the setting values controllable by the available actuators and geometric modifications to the current leveling path of operation, in other words to know the ceding of the and take this into account when adjusting the motors nesting to somehow compensate in advance the ceding that will be suffered during the actual work.
Actuellement, le calibrage des planeuses multi-rouleaux est classiquement effectuĆ© Ć vide Ć l'aide de cales rectifiĆ©es en acier, ou en charge en utilisant des cales mĆ©talliques et des barres de plomb, que l'on glisse entre les sommiers de la planeuse, puis on serre parallĆØlement les sommiers jusqu'Ć un Ć©cartement prĆ©cis entre les deux ensembles de rouleaux infĆ©rieurs et supĆ©rieurs, Ć©cartement dĆ©fini par une cale rectifiĆ©e en acier, par exemple de 8 mm d'Ć©paisseur, placĆ©e entre les deux ensembles de rouleaux. On place ainsi la planeuse dans des conditions d'efforts propres Ć rattraper les jeux mĆ©caniques inĆ©vitables et dans un Ć©tat de contrainte dĆ©terminĆ© par l'Ć©crasement des cales de plomb. On repĆØre alors dans cet Ć©tat la position des vis de serrage de la planeuse, position considĆ©rĆ©e ensuite comme rĆ©fĆ©rence, et par rapport Ć laquelle on rĆØgle la position ultĆ©rieure de travail, en amenant les dites vis de rĆ©glage dans la position correspondant Ć la position de travail souhaitĆ©e des rouleaux, en se basant sur la relation liant le dĆ©placement des dites vis et le dĆ©placement correspondant des rouleaux. On peut aussi ajuster grĆ¢ce Ć ce procĆ©dĆ© le parallĆ©lisme, ou compenser le dĆ©hanchement, et mĆŖme Ć©ventuellement agir sur les contre-appuis pour adapter le cintrage ou le cambrage des rouleaux, mais seulement de maniĆØre approximative.Currently, the calibration of multi-roller levelers is conventionally carried out empty using rectified steel shims, or loaded using metal wedges and lead bars, which one slides between the bases of the leveler, then we tighten parallel bed bases to a precise spacing between the two sets of lower rollers and upper, spacing defined by a shim rectified in steel, for example 8 mm thick, placed between the two sets of rollers. We place the leveler under conditions of effort capable of catching up with inevitable mechanical games and in a state of stress determined by crushing lead wedges. We spot then in this state the position of the clamping screws of the leveler, position then considered as a reference, and with respect to which the subsequent position of work, by bringing the said adjustment screws into the position corresponding to the desired working position rollers, based on the relationship between the displacement of said screws and the corresponding displacement rollers. It is also possible to adjust thanks to this process the parallelism, or compensate for swaying, and even possibly act on the counter-supports to adapt the bending or bending the rollers, but only from approximate way.
Lors de la procĆ©dure de calibrage indiquĆ©e ci-dessus, l'effort rĆ©el subi par les sommiers et dĆ» Ć l'Ć©crasement des cales de plomb reste inconnu, et n'est donc pas reprĆ©sentatif de maniĆØre fiable des efforts rencontrĆ©s lors du travail effectif.During the calibration procedure indicated above, the actual stress suffered by the box springs and due to the crushing of the lead wedges remains unknown, and is not therefore not reliably representative of the efforts encountered during actual work.
La mƩthode connue a notamment pour consƩquence constatƩe expƩrimentalement de provoquer des sur-serrages lors du planage de bandes de faible Ʃpaisseur.One of the consequences of the known method is experimentally observed to cause over-tightening when planing thin strips.
Il en rĆ©sulte une maĆtrise non satisfaisante des courbures rĆ©siduelles, cintre et tuile.This results in an unsatisfactory control of residual bends, hanger and tile.
La prĆ©sente invention a pour but de rĆ©soudre les problĆØmes Ć©voquĆ©s prĆ©cĆ©demment. Elle vise en particulier Ć permettre de dĆ©terminer avec une meilleure prĆ©cision les caractĆ©ristiques d'une planeuse multi-rouleaux, en effectuant un calibrage en charge, reproductible et sous des efforts connus. Elle vise aussi Ć dĆ©terminer le cĆ©dage d'ensemble de la planeuse, sous diffĆ©rentes charges, de maniĆØre Ć pouvoir intĆ©grer ces valeurs dans les modĆØles de rĆ©glages. Elle vise encore Ć dĆ©terminer avec plus de prĆ©cision les influences des rĆ©glages de contre-appuis, de maniĆØre Ć affiner les rĆ©glages de ces derniers et pouvoir corriger le cĆ©dage transversal des rouleaux planeurs, pour obtenir finalement une meilleure planĆ©itĆ© des bandes planĆ©es.The object of the present invention is to resolve the problems previously mentioned. It aims in particular to allow to determine with better precision the characteristics of a multi-roller leveler, performing a load, reproducible and under calibration known efforts. It also aims to determine the ceding of the overall leveler, under different loads, so that these values can be integrated into setting models. It still aims to determine with more precision the influences of the settings of counter-supports, so as to fine-tune the settings of these and be able to correct the transverse ceding of soaring rollers, to finally get a better flatness of the planed strips.
Elle vise Ć©galement Ć corriger le dĆ©hanchement de la planeuse ainsi que son Ā« basculement Ā». Elle Vise encore Ć permettre d'Ć©tudier la capacitĆ© d'une planeuse multi-rouleaux Ć fournir des rĆ©glages prĆ©cis et reproductibles correspondant Ć des cas de chargement habituels de planage. It also aims to correct the swaying of the leveler and its "tilting". She aims still allow to study the capacity of a glider multi-rollers to provide precise settings and reproducible corresponding to loading cases usual leveling.
Avec ces objectifs en vue, l'invention a pour objet un dispositif de calibrage d'une planeuse multi-rouleaux pour planer une bande mĆ©tallique, comportant un ensemble de rouleaux infĆ©rieurs et un ensemble de rouleaux supĆ©rieurs, agencĆ©s sensiblement parallĆØlement, perpendiculairement Ć la direction de planage selon laquelle dĆ©file la bande Ć planer.With these objectives in view, the object of the invention is a device for calibrating a multi-roller leveler for planing a metal strip, comprising an assembly of lower rollers and a set of rollers upper, arranged substantially parallel, perpendicular to the leveling direction according to which scrolls the strip to be leveled.
Selon l'invention, le dispositif est caractĆ©risĆ© en ce qu'il comporte une plaque de mesure en mĆ©tal, notamment Ć limite Ć©lastique Ć©levĆ©e, de dimension adaptĆ©e pour ĆŖtre mise en position entre l'ensemble de rouleaux supĆ©rieurs et l'ensemble de rouleaux infĆ©rieurs en s'Ć©tendant sensiblement sur toute la longueur des dits rouleaux, la dite plaque comportant des moyens de positionnement pour assurer son positionnement par rapport aux rouleaux dans la direction de planage, et des jauges de dĆ©formation pour mesurer des dĆ©formations Ć©lastiques de la plaque, les dites jauges de dĆ©formation Ć©tant fixĆ©es sur la plaque de maniĆØre Ć former plusieurs rangĆ©es transversales de jauges situĆ©es chacune Ć l'aplomb d'un des dits rouleaux, sur la face de la plaque opposĆ©e au dit rouleau.According to the invention, the device is characterized in what it has a metal measuring plate, especially with high elastic limit, of suitable size to be positioned between the roller assembly upper and lower roller assembly in extending substantially over the entire length of said rollers, the said plate comprising means for positioning to ensure its positioning by relative to the rollers in the leveling direction, and strain gauges to measure strains elastic of the plate, the so-called strain gauges being fixed on the plate so as to form several transverse rows of gauges each located at plumb with one of the said rollers, on the face of the plate opposite the said roller.
L'invention a aussi pour objet un procĆ©dĆ© de calibrage d'une planeuse multi-rouleaux, utilisant le dispositif selon l'invention, caractĆ©risĆ© en ce qu'on place la plaque de mesure dans la planeuse, positionnĆ©e grĆ¢ce aux moyens de positionnement de maniĆØre que chaque rangĆ©e de jauge soit situĆ©e Ć l'aplomb d'un rouleau, et on rapproche les deux ensembles de rouleaux l'un de l'autre de maniĆØre Ć exercer un effort de serrage sur la plaque de mesure, et on mesure au moyen des dites jauges les dĆ©formations subies par la plaque au droit de chaque rouleau situĆ© Ć l'aplomb des jauges, pour en dĆ©duire l'effort de serrage appliquĆ© par les rouleaux au droit de chaque jauge, ainsi que le serrage rĆ©el entre rouleaux.The invention also relates to a method of calibration of a multi-roller leveler, using the device according to the invention, characterized in that places the measuring plate in the leveler, positioned by means of positioning so that each gauge row is located directly above a roller, and the two sets of rollers are brought together, one of the other so as to exert a clamping force on the measuring plate, and we measure by means of said gauges the deformations undergone by the plate to the right of each roller located directly above the gauges, to deduce the clamping force applied by the rollers to the right of each gauge, as well as the actual tightening between rollers.
GrĆ¢ce aux jauges de dĆ©formations placĆ©es Ć l'aplomb des rouleaux, on peut mesurer les dĆ©formations de cintrage de surface de la plaque, provoquĆ©es par l'appui des rouleaux sur la plaque, et en dĆ©duire, connaissant les caractĆ©ristiques mĆ©caniques de la plaque, l'intensitĆ© de la force d'appui au niveau de chaque jauge. A partir de ces mesures, on peut donc avoir une connaissance prĆ©cise des caractĆ©ristiques de la planeuse, du point de vue de la gĆ©omĆ©trie du chemin de planage dĆ©fini entre les rouleaux.Thanks to the strain gauges placed vertically rollers, we can measure the deformations of bending of the surface of the plate, caused by the support rolls on the plate, and deduce from it, knowing the mechanical characteristics of the plate, the intensity support force at each gauge. From of these measures, so we can have knowledge specifies the characteristics of the leveler, from the point of view of the geometry of the leveling path defined between the rolls.
En premier lieu, prĆ©fĆ©rentiellement, la plaque comporte au moins une rangĆ©e de jauges situĆ©e de maniĆØre Ć ĆŖtre placĆ©e Ć l'aplomb d'un des rouleaux situĆ©s vers l'entrĆ©e de la planeuse, et une rangĆ©e de jauges situĆ©e de maniĆØre Ć ĆŖtre placĆ©e Ć l'aplomb d'un des rouleaux de sortie. On peut ainsi dĆ©terminer les efforts de serrage en entrĆ©e et en sortie de la planeuse, et par exemple initialiser en consĆ©quence les moteurs de commande de la position du sommier supĆ©rieur, dans une position correspondant Ć un serrage identique en entrĆ©e et en sortie, pour pouvoir ensuite apprĆ©cier l'Ć©cart de serrage rĆ©el entre entrĆ©e et sortie, et donc la diffĆ©rence d'imbrication entre les rouleaux en entrĆ©e et les rouleaux en sortie. On notera qu'on ne placera pas les jauges au droit du premier rouleau, supĆ©rieur ou infĆ©rieur, ni au droit du dernier rouleau supĆ©rieur ou infĆ©rieur, de sorte que les mesures ne seront faites que au droit de rouleaux chargĆ©s seulement sensiblement verticalement.First, preferably, the plate has at least one row of gauges located so to be placed directly above one of the rollers located towards the entry of the leveler, and a row of gauges located so as to be placed directly above one of the rollers exit. We can thus determine the clamping forces in and out of the leveler, for example accordingly initialize the command motors of the position of the upper box spring, in a position corresponding to identical tightening at input and output, to then be able to assess the tightening gap real between input and output, and therefore the difference nesting between the input rollers and the output rollers. Note that we will not place the gauges to the right of the first roller, upper or lower, nor to the right of the last upper roller or lower, so measurements will only be made to the right of rolls loaded only substantially vertically.
PrƩfƩrentiellement encore, une rangƩe de jauges comporte au moins une jauge situƩe dans la ligne mƩdiane et une jauge de chaque cƓtƩ vers les bords de la planeuse, ce qui permet de dƩterminer, et donc de corriger le cas ƩchƩant, des diffƩrences de serrages entre les cƓtƩs de la planeuse. En combinaison avec les mesures ƩvoquƩes prƩcƩdemment, il devient possible de dƩtecter, et donc Ʃgalement corriger, des dƩhanchements de la planeuse.Preferably also, a row of gauges has at least one gauge located in the center line and a gauge on each side towards the edges of the leveler, which makes it possible to determine, and therefore to correct, if necessary, differences in tightening between the sides of the leveler. In combination with measures mentioned above, it becomes possible to detect, and therefore also correct, swaying of the leveler.
PrĆ©fĆ©rentiellement encore, une rangĆ©e de jauge comporte une jauge centrale et plusieurs jauges latĆ©rales, disposĆ©es de maniĆØre Ć ĆŖtre chacune situĆ©e Ć l'aplomb de chaque contre-appui de la planeuse. On peut alors amĆ©liorer encore la connaissance prĆ©cise des caractĆ©ristiques de la planeuse, du point de vue de la gĆ©omĆ©trie du chemin de planage dĆ©fini entre les rouleaux, en particulier du profil transversal de ce chemin, lequel est dĆ©fini par la forme des gĆ©nĆ©ratrices des rouleaux contactant la plaque de mesure.Preferably also, a row of gauge has a central gauge and several gauges lateral, arranged so as to be each located at plumb with each counter-support of the leveler. We can then further improve the precise knowledge of characteristics of the leveler, from the point of view of geometry of the leveling path defined between the rollers, in particular of the transverse profile of this path, which is defined by the shape of the generators of the rollers contacting the measurement plate.
On peut alors agir sur les contre-appuis pour corriger des dĆ©fauts de parallĆ©lisme entre les rouleaux, par exemple en rĆ©glant les contre-appuis de la planeuse de maniĆØre que les dĆ©formations mesurĆ©es par chaque jauge pour un mĆŖme rouleau soient Ć©gales ou aient des valeurs prĆ©dĆ©terminĆ©es, de sorte que l'entrefer entre deux rouleaux successifs, c'est Ć dire un rouleau supĆ©rieur et un rouleau infĆ©rieur, soit constant sur la largeur du chemin de planage, ou corresponde Ć des valeurs prĆ©dĆ©terminĆ©es aptes Ć corriger les dĆ©fauts spĆ©cifiques d'une tĆ“le Ć planer.We can then act on the counter-supports to correcting parallelism between the rollers, for example by adjusting the counter-supports of the leveler so that the strains measured by each gauge for the same roll are equal or have values predetermined, so that the air gap between two successive rollers, i.e. an upper roller and a lower roller, be constant over the width of the leveling path, or corresponds to values preset to correct specific faults of a sheet to be leveled.
Ce qui vient d'ĆŖtre dit concerne essentiellement des caractĆ©ristiques relatives Ć la gĆ©omĆ©trie du chemin de planage, permettant d'avoir la meilleure connaissance possible de sa gĆ©omĆ©trie une fois les divers Ć©lĆ©ments de la planeuse placĆ©s dans des conditions correspondant aux conditions de travail, en particulier sous une charge apte Ć supprimer les divers jeux des rouleaux et de leurs supports et des organes de rĆ©glage et de commande. What has just been said essentially concerns characteristics relating to the geometry of the path leveling, allowing to have the best knowledge possible of its geometry once the various elements of the leveler placed in conditions corresponding to working conditions, especially under load suitable for eliminating the various clearances of the rollers and their supports and adjustment and control members.
L'invention permet aussi d'apprĆ©hender le comportement de la planeuse en charge, en dĆ©terminant l'effort global de serrage dans diffĆ©rentes positions mesurĆ©es des moyens de commande de serrage, et en en dĆ©duisant une courbe de cĆ©dage de la planeuse, qui peut ensuite ĆŖtre prise en compte pour effectuer les prĆ©rĆ©glages pour le travail, en fonction des caractĆ©ristiques dimensionnelles et mĆ©caniques des bandes Ć planer, et en fonction de l'importance de l'imbrication des rouleaux nĆ©cessaire pour corriger des dĆ©fauts connus des dites bandes, par exemple. Au lieu de considĆ©rer l'effort global de serrage dĆ©terminĆ© Ć partir de l'ensemble des mesures effectuĆ©es par toutes les jauges, on pourrait aussi apprĆ©cier des variations de serrage plus localisĆ©es, pour distinguer par exemple le cĆ©dage propre de chaque colonne de la planeuse, ou pour suivre indĆ©pendamment le comportement des contre-appuis lors de variations de charges.The invention also makes it possible to understand the glider behavior under load, determining the overall clamping force in different positions measured by the tightening control means, and deducing a yield curve from the leveler, which can then be taken into account to perform the presets for work, depending on dimensional and mechanical characteristics of the bands to hover, and depending on the importance of nesting rollers required to correct known defects said bands, for example. Instead of considering the overall clamping force determined from all the measurements made by all the gauges, we could also appreciate variations in tightening more localized, to distinguish for example the cedage clean of each column of the leveler, or to follow independently the behavior of the counter-supports during load variations.
On notera que la plaque instrumentĆ©e selon l'invention est typiquement une plaque en acier Ć haute limite Ć©lastique, par exemple de 1000 MPa, et d'Ć©paisseur par exemple de l'ordre de 0,7 mm, en tous cas d'Ć©paisseur trĆØs nettement supĆ©rieure Ć celle des bandes Ć planer, qui ont typiquement une Ć©paisseur de 0,1 Ć 0,2 mm par exemple.Note that the instrumented plate according to the invention is typically a high-grade steel plate elastic limit, for example of 1000 MPa, and of thickness for example of the order of 0.7 mm, in any case of thickness very much higher than that of the bands to be leveled, which typically have a thickness of 0.1 to 0.2 mm per example.
Pour la dƩtermination des caractƩristiques de la plaque, il faut aussi tenir compte des considƩrations suivantes :
- la plaque de mesure ne doit pas ĆŖtre soumise Ć des dĆ©formations plastiques, qui pourraient notamment survenir suite Ć une imbrication trop forte des rouleaux. Une imbrication trop forte des rouleaux peut risquer de dĆ©former excessivement les jauges de mesure.
- l'Ć©paisseur de la plaque est dĆ©terminĆ©e de sorte Ć appliquer par des flexions Ć©lastiques les efforts de planage habituellement supportĆ©s par la planeuse.
- en outre on dƩtermine une Ʃpaisseur maximale de la plaque pour Ʃviter de diminuer la sensibilitƩ des mesures.
- la limite Ć©lastique de la plaque est dĆ©terminĆ©e en fonction de l'Ć©paisseur et de maniĆØre Ć Ć©viter la plastification lorsque la plaque doit appliquer les efforts de planage maximum habituels.
- the measuring plate must not be subjected to plastic deformations, which could in particular occur following too strong nesting of the rollers. Too much nesting of the rollers can risk excessively distorting the measurement gauges.
- the thickness of the plate is determined so as to apply by elastic bending the leveling forces usually supported by the leveler.
- in addition, a maximum thickness of the plate is determined to avoid reducing the sensitivity of the measurements.
- the elastic limit of the plate is determined as a function of the thickness and so as to avoid plasticization when the plate has to apply the usual maximum leveling forces.
Pour que les mesures effectuĆ©es soient fiables et reproductibles, il est de la plus grande importance que les jauges de mesures soient prĆ©cisĆ©ment situĆ©es dans la position de plus grande dĆ©formation relative, c'est Ć dire sur le sommet des ondulations gĆ©nĆ©rĆ©es par l'application du serrage. A cette fin, les moyens de positionnement comportent au moins deux ensembles de jauge de positionnement disposĆ©s respectivement vers chaque bord latĆ©ral de la plaque, le plus Ć©loignĆ©s possibles l'un de l'autre, Ć l'aplomb d'un mĆŖme rouleau, pour permettre de dĆ©terminer prĆ©cisĆ©ment le positionnement de la plaque par rapport Ć ce rouleau dans la direction de planage, et donc la position relative de toutes les rangĆ©es de jauges de mesures par rapport Ć leurs rouleaux respectifs.So that the measurements taken are reliable and reproducible it is of the utmost importance that the measurement gauges are precisely located in the position of greatest relative deformation, say on the top of the ripples generated by the application of tightening. To this end, the means of positioning have at least two sets of positioning gauge respectively arranged towards each side edge of the plate, the farthest possible from each other, directly below the same roller, to precisely determine the positioning of the plate relative to this roller in the leveling direction, and therefore the relative position of all rows of measurement gauges relative to their respective rolls.
Pour ajuster prĆ©cisĆ©ment le positionnement de la plaque, celle-ci comporte, sur un bord transversal Ć la direction de planage, des butĆ©es d'appui rĆ©glables, disposĆ©es de maniĆØre Ć venir en appui contre un des rouleaux d'extrĆ©mitĆ© d'entrĆ©e ou de sortie de la planeuse, Ć hauteur de l'axe du dit rouleau. En jouant sur ces butĆ©es, rĆ©glables finement par exemple au moyens de vis micromĆ©triques, on ajuste alors la position de la plaque de maniĆØre que les jauges de positionnement signalent leur parfait centrage par rapport au rouleau. Pour faciliter ce positionnement et augmenter sa prĆ©cision, les jauges de positionnement sont prĆ©fĆ©rentiellement des jauges de type connu sous le nom de " chaĆnettes ", constituĆ©es classiquement sous la forme d'un ensemble de cinq jauges de dĆ©formation associĆ©es en ligne sur une longueur globale de l'ordre du centimĆØtre. Chaque chaĆnette est collĆ© avec prĆ©cision sur la face de la plaque opposĆ©e Ć un rouleau de travail, de sorte que l'axe de la jauge centrale de la chaĆnette soit parfaitement Ć l'aplomb de l'axe du dit rouleau.To precisely adjust the positioning of the plate, this comprises, on an edge transverse to the leveling direction, adjustable support stops, arranged so as to bear against one of the input or output end rollers of the leveler, up to the axis of said roller. Playing on these stops, finely adjustable for example by means micrometric screws, we then adjust the position of the plate so that the positioning gauges signal their perfect centering in relation to the roller. To facilitate this positioning and increase its precision, the positioning gauges are preferably gauges of the type known as "chains", conventionally constituted under the form of a set of five strain gauges associated online over a global length of the order of centimeter. Each chain is precisely glued on the face of the plate opposite to a working roller, so that the center line of the chain gauge is perfectly in line with the axis of said roller.
Le positionnement de la plaque s'effectue en observant les signaux issus de chaque jauge de la chaĆnette, jusqu'Ć l'obtention d'une symĆ©trie sur les jauges situĆ©es de chaque cĆ“tĆ© de la jauge centrale d'une part et jusqu'Ć dĆ©tection d'un maximum par la jauge centrale d'autre part, significatif de la localisation de celle-ci juste Ć l'aplomb de l'axe du rouleau, oĆ¹ la courbure de la plaque est la plus prononcĆ©e.The positioning of the plate is done in observing the signals from each gauge of the chain, until a symmetry is obtained on the gauges located on each side of the central gauge of a part and until detection of a maximum by the gauge central on the other hand, significant of the location of this one just below the axis of the roller, where the curvature of the plate is most pronounced.
D'autres caractĆ©ristiques et avantages apparaĆtront dans la description qui va ĆŖtre faite d'un dispositif conforme Ć l'invention et de sa mise en oeuvre.Other characteristics and advantages will appear in the description which will be made of a device according to the invention and its implementation.
On se reportera aux dessins annexƩs dans lesquels :
- les figures 1 Ć 5 qui illustrent le principe et la rĆ©alisation d'une planeuse multi-rouleaux ont dĆ©jĆ Ć©tĆ© commentĆ©es,
- la figure 6 est une vue partielle d'une plaque de mesure conforme Ć l'invention,
- la figure 7 illustre le positionnement de la plaque dans la planeuse, conformĆ©ment Ć l'invention.
- la figure 8 est un graphique reprĆ©sentant Ć titre d'exemple une courbe de cĆ©dage dĆ©terminĆ©e Ć l'aide de la plaque de mesure,
- la figure 9 est un graphique illustrant le profil en charge des rouleaux Ć l'entrĆ©e de la planeuse, montrant notamment l'influence du rĆ©glage des contre-appuis sur le profil.
- FIGS. 1 to 5 which illustrate the principle and the production of a multi-roller leveler have already been commented on,
- FIG. 6 is a partial view of a measurement plate according to the invention,
- FIG. 7 illustrates the positioning of the plate in the leveler, in accordance with the invention.
- FIG. 8 is a graph showing by way of example a yield curve determined using the measurement plate,
- FIG. 9 is a graph illustrating the profile under load of the rollers at the entry of the leveler, showing in particular the influence of the adjustment of the counter-supports on the profile.
La plaque instrumentĆ©e 5 donnĆ©e Ć titre d'exemple
et rƩalisƩe pour un type particulier de planeuse multi-rouleaux,
reprƩsentƩe figure 6 est typiquement une plaque
en tĆ“le d'acier Ć forte limite Ć©lastique, d'Ć©paisseur 0,7
mm et de 500 mm dans le sens du planage et 1 m dans le
sens transverse. Elle porte plusieurs rangƩes de jauges
de dƩformation 50 collƩes sur la surface de la tƓle, de
la maniĆØre suivante :The instrumented
Une premiĆØre rangĆ©e 51 de jauges est situĆ©e sur la
face supĆ©rieure, pour ĆŖtre positionnĆ©e Ć l'aplomb du
deuxiĆØme rouleau infĆ©rieur 11b, comme on le voit figure
7. Une deuxiĆØme rangĆ©e 52 de jauges est placĆ©e de maniĆØre
similaire Ć l'aplomb de l'avant dernier rouleau
infĆ©rieur. Une troisiĆØme rangĆ©e 53 est prĆ©fĆ©rentiellement
placƩe au niveau d'un rouleau mƩdian de la sƩrie de
rouleau.A
Chacune de ces rangƩes comporte sept jauges, telles
que les jauges 51a, 51b, 51c, 51f, 51i, 51j, 51k, de la
premiĆØre rangĆ©e, placĆ©es respectivement Ć l'aplomb des
contre-appuis 22a, 22b, 22c, 22f, 22i, 22j, 22k.Each of these rows has seven gauges, such
that the
D'autres rangƩes de jauges sont placƩes en face
infƩrieure de la plaque 5, telles que une rangƩe de
jauges 54 placĆ©e Ć l'aplomb du deuxiĆØme rouleau supĆ©rieur
12b, une rangĆ©e 55 placĆ©e Ć l'aplomb de l'avant dernier
rouleau supĆ©rieur, et une rangĆ©e 56 placĆ©e Ć l'aplomb
d'un rouleau mƩdian de la sƩrie de rouleaux supƩrieurs.
Chacune de ces rangƩes comporte par exemple trois jauges,
placĆ©es respectivement Ć l'aplomb des contre-appuis 22b,
22f, et 22j. De plus, en alignement sur la rangƩe 54, et
vers les bords de la plaque, sont placƩes des jauges de
positionnement 61, 62, constituĆ©es de chaĆnettes de cinq
jauges alignƩes dans la direction de planage, de type
connu en soi, et dont la jauge centrale est situƩe
prƩcisƩment sur la ligne 54.Other rows of gauges are placed opposite
bottom of
La plaque 5 comporte Ʃgalement deux butƩes
rƩglables 60, comportant chacune une partie fixe 63
solidarisƩe sur la plaque 5 et une partie mobile 64
rĆ©glable par rapport Ć la partie fixe, par exemple par
une vis micromƩtrique, et dont l'extrƩmitƩ est
positionnĆ©e de maniĆØre Ć venir en butĆ©e contre le premier
rouleau infƩrieur, comme reprƩsentƩ figure 7.The
Pour effectuer une mesure, on place la plaque 5
entre les rouleaux infƩrieurs et les rouleaux supƩrieurs
et on commence Ć serrer en commandant les moteurs 19a,
19b. Les indications donnƩes par les jauges de
positionnement 61, 62 permettent de vƩrifier le bon
positionnement de la rangĆ©e de jauges 54 Ć l'aplomb du
rouleau 12b, et de le corriger le cas Ć©chĆ©ant Ć l'aide
des butƩes rƩglables 60, avec une prƩcision de l'ordre de
0,1 mm. Cette premiĆØre Ć©tape de la mesure est
dƩterminante pour assurer un parfait parallƩlisme entre
les rangƩes de jauges et les rouleaux, et le
positionnement prƩcis de chaque alignement de jauges dans
le plan vertical passant par l'axe du rouleau
correspondant.To make a measurement, place the
On peut ensuite effectuer les mesures de serrage au moyen des diverses jauges.The tightening measurements can then be carried out means of the various gauges.
En faisant varier le serrage, des mesures globales, ou intĆ©grĆ©es sur l'ensemble ou une partie des jauges de la plaque, permettront par exemple de dĆ©terminer les efforts supportĆ©s par les sommiers, et le cĆ©dage de la planeuse. Sur la figure 8, on a reprĆ©sentĆ© Ć titre d'exemple la courbe de cĆ©dage d'une colonne situĆ©e du cĆ“tĆ© sortie d'une planeuse, obtenue grĆ¢ce Ć l'utilisation de la plaque de mesure selon l'invention, le cĆ©dage Ć©tant reprĆ©sentĆ© en abscisse, en mm, et les efforts de serrage par rouleau, en ordonnĆ©e, en daN.By varying the tightening, overall measurements, or integrated on all or part of the gauges of the plate, will allow for example to determine the efforts supported by the box springs, and the ceding of the leveler. In Figure 8, there is shown as example the yield curve of a column located in the output side of a leveler, obtained through the use of the measuring plate according to the invention, the ceding being shown on the abscissa, in mm, and the clamping forces per roll, on the ordinate, in daN.
Une telle courbe de cĆ©dage peut ensuite ĆŖtre intĆ©grĆ©e dans les paramĆØtres de rĆ©glage de la planeuse.Such a yield curve can then be integrated in the adjustment parameters of the leveler.
En observant sƩparƩment les valeurs donnƩes par
chacune des jauges, on peut dƩterminer un profil de
charge de chaque rouleau situƩ en correspondance avec une
rangƩe de jauges. Le graphique de la figure 9 montre, par
exemple, le profil des rouleaux en entrƩe d'une planeuse.
Le tracĆ© 71 correspond Ć un rĆ©glage des contre-appuis Ć
0 ; le tracĆ© 72 Ć un rĆ©glage Ć -0,05 mm ; le tracĆ© 73 Ć
un rĆ©glage Ć -0,1 mm. Chaque point des tracĆ©s correspond
Ć une jauge de mesure, et les valeurs indiquĆ©es en
ordonnƩe reprƩsentent le serrage des rouleaux sur la
plaque, dĆ©terminĆ© Ć partir des mesures effectuĆ©es. Ces
mesures effectuƩes avec la plaque instrumentƩe selon
l'invention ont permis de valider les rƩglages habituels,
c'est Ć dire un rĆ©glage des contre appuis de -0,1 mm,
effectuƩs empiriquement pour l'obtention d'une bonne
planƩitƩ manifeste. Les mesures effectuƩes selon
l'invention permettent donc d'obtenir une bonne image des
serrages dans la direction transversale rƩellement
appliquƩs dans la planeuse. Elles permettent d'affiner
les rƩglages des contre-appuis pour obtenir une meilleure
planƩitƩ.By observing separately the values given by
each of the gauges, we can determine a profile of
load of each roller located in correspondence with a
row of gauges. The graph in Figure 9 shows, by
example, the profile of the rollers entering a leveler.
L'invention n'est pas limitĆ©e au mode de rĆ©alisation de la plaque instrumentĆ©e dĆ©crit ci-dessus uniquement Ć titre d'exemple. En particulier le nombre et la disposition des rangĆ©es de jauges et le nombre de jauges par rangĆ©e pourra ĆŖtre modifiĆ©, en fonction du nombre de rouleaux de la planeuse, du nombre de contre appuis et des mesures souhaitĆ©es. Egalement, les jauges de positionnement ainsi que les butĆ©es rĆ©glables pourront ĆŖtre remplacĆ©es par des moyens Ć©quivalents propres Ć assurer le positionnement le plus prĆ©cis possible des rangĆ©es de jauges de mesure Ć l'aplomb des rouleaux.The invention is not limited to the mode of realization of the instrumented plate described above only as an example. In particular the number and the arrangement of the rows of gauges and the number of gauges per row may be modified, depending on the number of leveler rollers, number of counter supports and desired actions. Also, the gauges positioning as well as the adjustable stops can be replaced by equivalent means specific to ensure the most precise positioning possible of rows of measuring gauges directly above the rollers.
On notera aussi que, s'il est a priori envisagĆ© de caractĆ©riser la planeuse pour la largeur maximale de planage, en utilisant une plaque de mesure de cette largeur, il est Ć©galement possible de caractĆ©riser la planeuse pour un travail dans un format de tĆ“le donnĆ©, diffĆ©rent du format maximal, en utilisant une plaque de mesure de dimension identique Ć celle du produit pour lequel on veut caractĆ©riser la planeuse. On placera alors prĆ©fĆ©rentiellement la plaque centrĆ©e longitudinalement dans la planeuse. On pourra alors utiliser ultĆ©rieurement la caractĆ©risation faite de la planeuse pour effectuer son rĆ©glage mĆŖme pour le planage de tĆ“les de format plus petit.It will also be noted that, if it is a priori envisaged to characterize the leveler for the maximum width of leveling, using a measuring plate of this width, it is also possible to characterize the leveler for work in a given sheet metal format, different from the maximum format, using a plate of dimension measurement identical to that of the product for which we want to characterize the leveler. We will then place preferably the plate centered longitudinally in the leveler. We can then use later the characterization made of the leveler to perform its setting even for planing of larger format sheets small.
Claims (10)
- A device for calibrating a multi-roll leveler in order to level a metal strip (10), comprising a set of lower rolls (11a to 11n) and a set of upper rolls (12a to 12n), arranged approximately in a parallel manner, perpendicular to the leveling direction (F) in which the strip to be leveled runs,
āāācharacterized in that it includes a measurement plate (5) made of metal, having a size suitable for being placed between the set of upper rolls and the set of lower rolls, extending approximately over the entire length of said rolls, said plate having positioning means (61, 62; 63, 64) for positioning it with respect to the rolls in the leveling direction, and strain gauges (50) for measuring elastic deformations of the plate, said strain gauges being fastened to the plate so as to form several transverse rows (51 to 56) of gauges each located vertically in line with one of said rolls, on the opposite face of the plate with respect to said roll. - The device as claimed in claim 1, characterized in that the plate (5) has at least one row of gauges (51) located so as to be placed vertically in line with one of the rolls located near the entry of the leveler and a row of gauges (52) located so as to be placed vertically in line with one of the rolls located toward the exit.
- The device as claimed in claim 1, characterized in that one row of gauges has at least one gauge (51f) located on the central line and a gauge (51a, 51b, 51c, 51i, 51j, 51k) on each side toward the edges of the leveler.
- The device as claimed in claim 3, characterized in that one row of gauge has a central gauge (51f) and several lateral gauges (51a, 51b, 51c, 51i, 51j, 51k) placed so as to each be located vertically in line with each press roll (22a, 22b, ... 22k) of the leveler.
- The device as claimed in claim 1, characterized in that the positioning means comprise at least two sets (61, 62) of positioning gauges placed toward each lateral edge of the plate vertically in line with the same roll, respectively, in order to allow the position of the plate with respect to this roll in the leveling direction to be accurately determined.
- The device as claimed in claim 1 or 5, characterized in that the plate includes, on one edge transverse to the direction of leveling, adjustable bearing stops (60) placed so as to bear against one of the end rolls, the entry roll or the exit roll, of the leveler level with the axis of said roll.
- A method for calibrating a multi-roll leveler, using the device as claimed in any one of the preceding claims, characterized in that the measurement plate (5) is placed in the leveler, positioned by the positioning means (60, 61, 62) so that each row of gauge is located vertically in line with a roll, and the two sets of rolls are brought closer together by clamping control means so as to exert a clamping force on the measurement plate, and the deformations undergone by the plate in line with each roll located vertically in line with the gauges is measured by means of said gauges, in order to deduce therefrom the clamping force applied by the rolls in line with each gauge.
- The method of calibrating a multi-roll leveler as claimed in claim 7, characterized in that the device as claimed in claim 6 is used and the position of the plate (5) is adjusted by means of the adjustable stops (60) so that the positioning sensors are located so as to be precisely in vertical alignment with the roll.
- The method of calibrating a multi-roll leveler as claimed in claim 7, characterized in that the overall clamping force in the various measured positions of the clamping control means is determined and a spring curve for the leveler is deduced therefrom.
- The method of calibrating a multi-roll leveler as claimed in claim 7, characterized in that the press rolls (22a to 22k) of the leveler are adjusted so that the deformations measured by each gauge for the same roll are equal and have predetermined values.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0014821A FR2816856B1 (en) | 2000-11-17 | 2000-11-17 | DEVICE AND METHOD FOR CALIBRATING A MULTI-ROLLER PLANTER |
FR0014821 | 2000-11-17 | ||
PCT/FR2001/003557 WO2002040191A2 (en) | 2000-11-17 | 2001-11-14 | Device and method for calibrating a multiple-roller flattener |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1333941A2 EP1333941A2 (en) | 2003-08-13 |
EP1333941B1 true EP1333941B1 (en) | 2004-05-19 |
Family
ID=8856564
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01996438A Expired - Lifetime EP1333941B1 (en) | 2000-11-17 | 2001-11-14 | Device and method for calibrating a multiple-roller flattener |
Country Status (18)
Country | Link |
---|---|
US (1) | US6993947B2 (en) |
EP (1) | EP1333941B1 (en) |
JP (1) | JP4047168B2 (en) |
KR (1) | KR100780462B1 (en) |
CN (1) | CN1262364C (en) |
AT (1) | ATE267061T1 (en) |
AU (1) | AU2002223066A1 (en) |
BR (1) | BR0115406A (en) |
CA (1) | CA2428496C (en) |
CZ (1) | CZ304540B6 (en) |
DE (1) | DE60103423T2 (en) |
ES (1) | ES2221660T3 (en) |
FR (1) | FR2816856B1 (en) |
PL (1) | PL198786B1 (en) |
PT (1) | PT1333941E (en) |
RU (1) | RU2277026C2 (en) |
TR (1) | TR200401623T4 (en) |
WO (1) | WO2002040191A2 (en) |
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FR2816530B1 (en) * | 2000-11-15 | 2003-02-07 | Usinor | METHOD OF ADJUSTING A PLANER UNDER TRACTION AND CORRESPONDING DEVICE |
FR2851943B1 (en) * | 2003-03-07 | 2005-04-08 | DEVICE AND METHOD FOR CALIBRATING A ROLLER PLANE WITH AN INSTRUMENTED BAR | |
FR2860738B1 (en) * | 2003-10-13 | 2006-02-03 | Vai Clecim | METHOD OF INCREASING THE ACCURACY OF PRODUCT TRACK CONTROL IN AN IMBRIC ROLL PLANER MACHINE AND PLANTING INSTALLATION FOR CARRYING OUT THE PROCESS |
ES2259529B1 (en) * | 2004-12-17 | 2007-10-01 | Fagor, S. Coop. | "DEVICE AND METHOD FOR CALIBRATION OF A MULTIPLE ROLLER STRAPPING MACHINE." |
KR100756235B1 (en) * | 2006-09-06 | 2007-09-06 | ģ ģ„ķ¬ | Crown regulator of level feeder |
US8893537B2 (en) * | 2007-11-07 | 2014-11-25 | The Bradbury Company, Inc. | Methods and apparatus to drive material conditioning machines |
DE102008021652B3 (en) * | 2008-04-30 | 2009-05-28 | Outotec Oyj | Device for straightening deformed electrolysis baths, in particular for aluminum fused-salt electrolysis |
CN102248030B (en) * | 2011-06-02 | 2013-08-07 | å¤Ŗåē§ęå¤§å¦ | Straightener with convertible straightening roll system |
DE102012217493A1 (en) | 2012-09-26 | 2014-05-28 | Kohler Maschinenbau Gmbh | straightener |
CN103776357A (en) * | 2012-10-26 | 2014-05-07 | äøęµ·å®é¢å·„äøęęÆęå”ęéå ¬åø | Method for accurately selecting data of steel plate straightening machine position sensor |
JP5994762B2 (en) * | 2013-10-24 | 2016-09-21 | ļ¼Ŗļ½ļ½ ć¹ćć¼ć«ę Ŗå¼ä¼ē¤¾ | Laura leveler calibration method |
CN105817499B (en) * | 2016-03-22 | 2018-02-13 | éåŗé¢é(éå¢)ęéč“£ä»»å ¬åø | A kind of 11 roller straightener roller system school zero method |
US10010918B2 (en) * | 2016-10-05 | 2018-07-03 | Allor Manufacturing Inc. | Device and method for leveling a metal plate |
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KR102285074B1 (en) * | 2019-12-09 | 2021-08-04 | ģ£¼ģķģ¬ ķ¬ģ¤ģ½ | Correction monitoring unit and strip correcting apparatus having thereof |
CN112453115A (en) * | 2020-11-09 | 2021-03-09 | äøęµ·äøč¹äøäŗé č¹ę“ę²¹ęŗęéå ¬åø | Mechanical cold pressing correction method for bending deformation connecting rod |
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CN113385551B (en) * | 2021-05-27 | 2022-08-19 | åäŗ¬é¢éč”份ęéå ¬åø | Accurate calibration method for roll gap of mechanical pressing straightening machine |
CN113390311B (en) * | 2021-05-28 | 2023-09-01 | äøč¹ę¾č„æč¹č¶äæ®é ęéå ¬åø | T-shaped caliper for adjusting belt roller shaft of ship self-unloading system and adjusting method |
CN113584790B (en) * | 2021-08-10 | 2023-05-16 | å®å¾½å®ę°ęé„°č”份ęéå ¬åø | Wrinkle treatment process for flat fabric |
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2000
- 2000-11-17 FR FR0014821A patent/FR2816856B1/en not_active Expired - Fee Related
-
2001
- 2001-11-14 CA CA002428496A patent/CA2428496C/en not_active Expired - Lifetime
- 2001-11-14 AT AT01996438T patent/ATE267061T1/en active
- 2001-11-14 AU AU2002223066A patent/AU2002223066A1/en not_active Abandoned
- 2001-11-14 EP EP01996438A patent/EP1333941B1/en not_active Expired - Lifetime
- 2001-11-14 CN CNB018220940A patent/CN1262364C/en not_active Expired - Lifetime
- 2001-11-14 US US10/416,895 patent/US6993947B2/en not_active Expired - Lifetime
- 2001-11-14 BR BR0115406-0A patent/BR0115406A/en not_active IP Right Cessation
- 2001-11-14 DE DE60103423T patent/DE60103423T2/en not_active Expired - Lifetime
- 2001-11-14 JP JP2002542548A patent/JP4047168B2/en not_active Expired - Lifetime
- 2001-11-14 WO PCT/FR2001/003557 patent/WO2002040191A2/en active IP Right Grant
- 2001-11-14 RU RU2003117713/02A patent/RU2277026C2/en active
- 2001-11-14 CZ CZ2003-1345A patent/CZ304540B6/en not_active IP Right Cessation
- 2001-11-14 PL PL360715A patent/PL198786B1/en unknown
- 2001-11-14 ES ES01996438T patent/ES2221660T3/en not_active Expired - Lifetime
- 2001-11-14 TR TR2004/01623T patent/TR200401623T4/en unknown
- 2001-11-14 PT PT01996438T patent/PT1333941E/en unknown
- 2001-11-14 KR KR1020037006643A patent/KR100780462B1/en active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
PT1333941E (en) | 2004-10-29 |
WO2002040191A3 (en) | 2003-01-16 |
CZ20031345A3 (en) | 2004-01-14 |
CN1486225A (en) | 2004-03-31 |
TR200401623T4 (en) | 2004-08-23 |
CZ304540B6 (en) | 2014-06-25 |
FR2816856B1 (en) | 2003-01-31 |
JP4047168B2 (en) | 2008-02-13 |
ATE267061T1 (en) | 2004-06-15 |
BR0115406A (en) | 2003-10-07 |
WO2002040191A2 (en) | 2002-05-23 |
JP2004513788A (en) | 2004-05-13 |
PL360715A1 (en) | 2004-09-20 |
EP1333941A2 (en) | 2003-08-13 |
RU2277026C2 (en) | 2006-05-27 |
AU2002223066A1 (en) | 2002-05-27 |
DE60103423T2 (en) | 2005-06-30 |
PL198786B1 (en) | 2008-07-31 |
CA2428496C (en) | 2009-06-23 |
CA2428496A1 (en) | 2002-05-23 |
ES2221660T3 (en) | 2005-01-01 |
DE60103423D1 (en) | 2004-06-24 |
US20040089044A1 (en) | 2004-05-13 |
FR2816856A1 (en) | 2002-05-24 |
CN1262364C (en) | 2006-07-05 |
US6993947B2 (en) | 2006-02-07 |
KR100780462B1 (en) | 2007-11-28 |
KR20030064788A (en) | 2003-08-02 |
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