EP2598288B1 - Device for dressing a grinding wheel, and use thereof in a centerless grinder for nuclear fuel pellets - Google Patents
Device for dressing a grinding wheel, and use thereof in a centerless grinder for nuclear fuel pellets Download PDFInfo
- Publication number
- EP2598288B1 EP2598288B1 EP20110735449 EP11735449A EP2598288B1 EP 2598288 B1 EP2598288 B1 EP 2598288B1 EP 20110735449 EP20110735449 EP 20110735449 EP 11735449 A EP11735449 A EP 11735449A EP 2598288 B1 EP2598288 B1 EP 2598288B1
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- EP
- European Patent Office
- Prior art keywords
- grinding wheel
- dressing
- rod
- sleeve
- corundum
- 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.)
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- 239000008188 pellet Substances 0.000 title claims description 21
- 239000003758 nuclear fuel Substances 0.000 title claims description 16
- 239000010431 corundum Substances 0.000 claims description 46
- 229910052593 corundum Inorganic materials 0.000 claims description 46
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims description 2
- 239000003638 chemical reducing agent Substances 0.000 claims 1
- 238000005282 brightening Methods 0.000 description 42
- 239000010432 diamond Substances 0.000 description 4
- 229910003460 diamond Inorganic materials 0.000 description 3
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 235000010603 pastilles Nutrition 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
Classifications
-
- 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
- B24B53/00—Devices or means for dressing or conditioning abrasive surfaces
- B24B53/04—Devices or means for dressing or conditioning abrasive surfaces of cylindrical or conical surfaces on abrasive tools or wheels
-
- 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
- B24B53/00—Devices or means for dressing or conditioning abrasive surfaces
- B24B53/12—Dressing tools; Holders therefor
Definitions
- the invention relates to a device and a brightening assembly capable of brightening a grinding wheel or grinding wheel, based on diamond grains.
- the document US312133 shows a brightening device according to the preamble of claim 1.
- the document US4098253 shows a set of brightening including a corundum stick.
- Centerless grinding is a known grinding process known for the grinding of cylindrical workpieces, particularly for nuclear fuel pellets.
- a centerless grinding machine usually comprises two grinding wheels, one of which is a grinding wheel, which serves to rotate the pellets on themselves by advancing them on a guide rail, called the enfilade rule in the case of nuclear fuel pellets, and the other is a working wheel and has the function of machining, that is to say ie, correct the diameter of the pellets.
- a grinding wheel usually comprises at its periphery, as grinding elements, diamond-based bands attached by a metal binder or a resin.
- grinding wheels for nuclear fuel pellets there are three types of strips: one for roughing, another for semi-finishing and the last for finishing pellets.
- the efficiency of machining the grinding wheel depends on the condition of the diamonds and its fouling. To give teeth to the grinding wheel, it is necessary to perform a sharpening using corundum sticks.
- the general object of the invention is the improvement of the brightening quality of the working wheel, and therefore of the ground parts, more particularly nuclear fuel pellets.
- a particular aim is to reduce the risks incurred by an operator in charge of brightening manually according to the state of the art and the risks of damage incurred by the grinding wheel.
- the subject of the invention is a device for brightening a grinding wheel which, according to the invention, essentially comprises a sheath for holding laterally and guiding a corundum stick, a jack for applying, along its longitudinal axis. a constant thrust force of the corundum stick against the working wheel, means for securing the cylinder rod to the end of a corundum stick, and linear guide means of the sleeve for translating the corundum stick parallel to the axis of the grinding wheel by maintaining it pushed against it with the same constant effort.
- the brightening device minimizes the risks and makes brightening more efficient, more precise and more reliable.
- the brightening device increases the life of a grinding wheel and improves the quality of the parts ground by it such as nuclear fuel pellets.
- the sheath comprises an upwardly open groove of cross section with respect to its U-shaped longitudinal axis.
- rollers corundum stick mounted in the sleeve substantially at the same longitudinal side, two of the rollers being opposite one another and each mounted on a branch of the U of the groove and the third being mounted on the top of the U of the groove., the space between the rollers and the bottom of the U of the groove being of dimensions corresponding to the nominal transverse dimensions of the corundum stick.
- the rollers thus facilitate the guiding of the corundum stick, reduce friction and provide an anti-vibration function of the corundum stick in the sheath.
- the cylinder is preferably a double-acting cylinder to further allow the distance of the corundum stick of the grinding wheel.
- the jack is preferably still a pneumatic cylinder regulated by a pressure regulator.
- the pressure of a pneumatic cylinder regulated ensures an effective brightening without much pressure on the grinding wheel.
- the linear guide means are preferably constituted by dry running rails.
- dry-type linear guiding makes it possible to avoid the presence of a moderator in the glove box, that is to say to avoid having a risk of criticality. additional and avoid pollution by said moderator of the parts to be rectified, such as nuclear fuel pellets.
- the device according to the invention may comprise two end stops of the linear guide means for limiting the displacement of the corundum stick to the width of the working wheel.
- the device advantageously comprises a carriage in two parts pivotable relative to each other, the lower part of the carriage being permanently guided by the linear guide means, the upper part of the pivoting carriage between a rest position in which the sleeve is substantially parallel to the axis of the grinding wheel and a brightening position in which the sleeve is substantially perpendicular to the axis of the grinding wheel.
- a lever for manually locking the pivoting of the upper part of the carriage can be provided.
- the invention also relates to a brightening assembly, for use in brightening a work grinding wheel, comprising a corundum stick and a workpiece, one end of the workpiece being molded on the corundum stick, the workpiece comprising at the other of its ends a groove forming mortise adapted to house the cylinder rod of the device described above, forming a tenon constituting a dovetail assembly between the post and the mortise.
- a brightening assembly for use in brightening a work grinding wheel, comprising a corundum stick and a workpiece, one end of the workpiece being molded on the corundum stick, the workpiece comprising at the other of its ends a groove forming mortise adapted to house the cylinder rod of the device described above, forming a tenon constituting a dovetail assembly between the post and the mortise.
- the piece may include a gripping pin to allow manual insertion of the corundum stick into the sleeve when new and its manual removal once worn.
- the invention also relates to a centerless grinding machine comprising a grinding wheel for advancing the workpieces and a grinding wheel arranged next to the grinding wheel for grinding said workpieces and a working grinding device. described above and arranged near the grinding wheel facing it opposite the grinding wheel.
- the centerless grinding machine is ideally suited for grinding nuclear fuel pellets.
- the brightening device 1 is shown in configuration installed near a grinding wheel 2 to be brightened.
- the device 1 is fixed by screws 21 to the frame 20 supporting the grinding wheel.
- the brightening device 1 comprises, first of all, a sheath 10 for holding laterally and guiding along its longitudinal axis X a stick of corundum 3.
- the sheath 10 comprises an upwardly open groove of cross-section with respect to its U-shaped longitudinal axis.
- rollers 100, 101, 102 for guiding the corundum stick 3 are mounted in the sleeve 10 substantially at the same longitudinal side, at its end closest to the grinding wheel 2 to be brightened. More exactly, a roller 100 is mounted on the top of the U of the groove of the sleeve and the two others 101, 102 are facing each other and each mounted on a branch of the U of the groove.
- the space thus defined between the rollers 100, 101, 102 and the bottom 10A of the groove U is of dimensions corresponding to the nominal transverse dimensions of the corundum stick 3 ( Figure 2B ).
- the device 1 also comprises a double-acting pneumatic cylinder 11 for applying a constant thrust force of the corundum stick 3 held and guided in the sleeve 10 against the working grindwheel 2.
- the fastening of the rod 110 of cylinder to the corundum stick 3 is achieved by a tenon / mortise system. More exactly, there is provided an intermediate joining piece 4 between the corundum stick 3 and the jack rod 11. As illustrated by more visible way in figure 3 , one end 40 of the part 4 being molded on the corundum stick 3. This piece 4 comprises at the other of its ends a groove 41 forming a mortise adapted to accommodate the rod 110 cylinder forming a tenon constituting a tail assembly. dovetail between the tenon and the mortise. The intermediate piece 4 further comprises a gripping pin 42 which allows the manual introduction of a new corundum stick 3 in the sleeve 10 and its removal once worn.
- the sheath 10 and the double-acting jack 11 are mounted on the upper part 120 of a carriage 12.
- This carriage 12 is in two parts 120, 121 pivoting relative to each other.
- the lower portion 121 of the carriage is slidably mounted permanently on linear guide rails 13 which are parallel to the Y axis of the grinding wheel 2.
- the linear guide serves to move the sleeve 10 over the entire width of the grinding wheel. work 2 without variation of the distance between the sleeve 10 in the brightening position and the grinding wheel 2.
- the guidance provided by the rails is preferably dry, when the brightening is performed in a constraining environment, such as a box gloves of a grinding machine without center of nuclear fuel pellets: this avoids the presence of a moderator in the glove box (a risk of criticality) and the pollution of the pellets.
- the upper portion 120 of the carriage 12 is pivotable between a rest position in which the sleeve 10 is substantially parallel to the Y axis of the grinding wheel 2 and a brightening position as shown in FIG. figures 1 , 2 , 3 wherein the sleeve 10 is substantially perpendicular to the Y axis of the grinding wheel 2.
- the sleeve 10 can rotate at an angle of 90 °.
- This locking lever 14 comprises a screw 140 fixed on the upper part 120 of the carriage 12 and an indexable handle which ensures the holding in position in each of the two positions (rest and brightening) of the tool part 10, 11.
- the tool part 10, 11 pivots by loosening the locking lever 14 and therefore the screw 140 and then sliding it in a 1200 opening made on the upper portion 120 of the carriage 12.
- the opening 1200 has an angular length of 90 °, which allows to rotate from 0 ° (rest position) to 90 ° (brightening position) to the tool part 10, 11.
- the sleeve 10 is guided linearly perpendicular to the grinding wheel. and over its entire width: the corundum stick 3 is actually translated parallel to the grinding wheel 2 and is held pushed against it with the constant force of the cylinder 11 during a brightening operation.
- FIG 3 there is shown a brightening assembly which is constituted in advance of its mounting in the tool portion 10, 11 and prior to the brightening operation itself: this set comprises a corundum stick 3 and the piece 4 in which stick 3 is adjusted with clamping at the end 40.
- This piece 4 can be molded on the corundum stick 3.
- This piece 4 comprises at its other end a groove 41 for securing with the rod 110 of cylinder 11 according to the tenon / mortise assembly mentioned above.
- a gripping pin 42 is provided to allow the manual insertion of a new corundum stick in the groove of the sheath 10 and its removal once worn.
- the pin 42 may for example be glued into the piece 4.
- FIG 4 is shown in perspective a brightening device 1 according to the invention as it is arranged in a grinding machine 5 without a center of nuclear fuel pellets itself arranged in a glove box.
- the centerless grinding machine 5 comprises a grinding wheel 6 for advancing the pellets by rotation on themselves and a grinding wheel 2 arranged facing the grinding wheel 6 for grinding the nuclear fuel pellets.
- the brightening device 1 according to the invention is arranged close to the working grinding wheel 2 opposite the grinding wheel opposite the drive wheel 6.
- the grinding wheel 2 is here confined by a cowling 22.
- the glove box comprises an access hatch (not shown) usually intended for access to the grinding wheel.
- the brightening device 1 is arranged in front of the access window to the grinding wheel: an operator, with his hands in the gloves of the glove box, can thus have access through the hatch to the lever 14 for manual locking, to the part tool 10, 11 of the device or any other element thereof.
- the device according to the invention may furthermore use other materials than corundum to brighten the grinding wheels. It can be any hardness material equivalent to corundum and capable of brightening a grinding wheel based on diamond grains, such as an abrasive based on aluminum oxide, silicon carbide or quartz.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Grinding-Machine Dressing And Accessory Apparatuses (AREA)
Description
L'invention concerne un dispositif et un ensemble d'avivage susceptibles d'aviver une meule de rectification ou meule de travail, à base de grains de diamant.The invention relates to a device and a brightening assembly capable of brightening a grinding wheel or grinding wheel, based on diamond grains.
Elle vise plus particulièrement à améliorer l'efficacité et la fiabilité de l'avivage.It is particularly aimed at improving the efficiency and reliability of brightening.
Elle trouve une utilisation particulièrement intéressante dans une rectifieuse sans centre dans laquelle la meule de travail a pour fonction de rectifier le diamètre des pastilles de combustible nucléaire.It finds a particularly interesting use in a centerless grinding machine in which the grinding wheel has the function of grinding the diameter of the nuclear fuel pellets.
Le document
La rectification sans centre est un procédé de meulage avantageux connu pour la rectification de pièces cylindriques, en particulier pour les pastilles de combustible nucléaire.Centerless grinding is a known grinding process known for the grinding of cylindrical workpieces, particularly for nuclear fuel pellets.
Une rectifieuse sans centre comprend usuellement deux meules dont l'une est une meule d'entraînement, qui sert à la mise en rotation des pastilles sur elles mêmes en les faisant avancer sur un rail de guidage, appelé règle d'enfilade dans le cas des pastilles de combustible nucléaire, et l'autre est une meule de travail et a pour fonction d'usiner, c'est-à-dire rectifier le diamètre des pastilles.A centerless grinding machine usually comprises two grinding wheels, one of which is a grinding wheel, which serves to rotate the pellets on themselves by advancing them on a guide rail, called the enfilade rule in the case of nuclear fuel pellets, and the other is a working wheel and has the function of machining, that is to say ie, correct the diameter of the pellets.
Une meule de travail comprend usuellement à sa périphérie, en tant qu'éléments de meulage, des bandeaux à base de diamants fixés par un liant métallique ou une résine. Dans le cas des meules de travail pour les pastilles de combustible nucléaire, il existe trois types de bandeaux: l'un pour l'ébauche, un autre pour la semi-finition et le dernier pour la finition des pastilles.A grinding wheel usually comprises at its periphery, as grinding elements, diamond-based bands attached by a metal binder or a resin. In the case of grinding wheels for nuclear fuel pellets, there are three types of strips: one for roughing, another for semi-finishing and the last for finishing pellets.
L'efficacité de l'usinage de la meule de travail dépend de l'état des diamants et de son encrassement. Pour redonner du mordant à la meule de travail, il est nécessaire de réaliser un avivage à l'aide de bâtons de corindon.The efficiency of machining the grinding wheel depends on the condition of the diamonds and its fouling. To give teeth to the grinding wheel, it is necessary to perform a sharpening using corundum sticks.
Usuellement, pour les meules de travail dans les rectifieuses sans centre des pastilles de combustible nucléaire, l'avivage est fait à la main. Ainsi, un opérateur insère un bâton de corindon avec un outil par la trappe d'accès à l'arrière d'un bâti dans lequel la rectifieuse est agencée. L'opérateur tente alors de positionner au mieux le bâton de corindon, c'est-à-dire le plus proche de la perpendiculaire à la meule de travail. Un léger effort tributaire de et apporté par la pression manuelle de l'opérateur est ainsi appliqué par le bâton de corindon sur la meule de travail. Tout en appliquant cet effort, l'opérateur tente de déplacer au mieux le bâton de corindon sur toute la largeur de la meule. Pour réaliser une opération d'avivage jugée satisfaisante, l'opérateur pouvait consommer jusqu'à environ dix bâtons de corindon. Cette opération peut comporter en outre un risque important pour l'opérateur ainsi que des risques d'endommagement de la meule de travail par rupture d'un bâton de corindon dans le bâti. L'outil d'avivage de la meule de travail a été développé pour éviter ces risques et améliorer l'avivage.Usually, for grinding wheels in centerless grinders of nuclear fuel pellets, brightening is done by hand. Thus, an operator inserts a corundum stick with a tool through the access door at the rear of a frame in which the grinder is arranged. The operator then tries to position at best the corundum stick, that is to say, the closest to the perpendicular to the grinding wheel. A small effort dependent on and brought by the manual pressure of the operator is thus applied by the corundum stick on the grinding wheel. While applying this effort, the operator tries to move at best the corundum stick on the entire width of the grinding wheel. To perform a brightening operation deemed satisfactory, the operator could consume up to about ten sticks of corundum. This operation may also involve a significant risk for the operator as well as risks of damage to the grinding wheel by breaking a stick of corundum in the frame. The grinding tool of the grinding wheel has been developed to avoid these risks and to improve brightening.
Par ailleurs, il serait souhaitable d'améliorer encore la qualité d' avivage d'une meule de travail.Furthermore, it would be desirable to further improve the brightening quality of a working wheel.
Ainsi, le but général de l'invention est l'amélioration de la qualité d'avivage de la meule de travail, et donc des pièces rectifiées, plus particulièrement des pastilles de combustibles nucléaire.Thus, the general object of the invention is the improvement of the brightening quality of the working wheel, and therefore of the ground parts, more particularly nuclear fuel pellets.
Un but particulier est de réduire les risques encourus par un opérateur en charge de l'avivage manuellement selon l'état de l'art et les risques d'endommagement encourus par la meule de travail.A particular aim is to reduce the risks incurred by an operator in charge of brightening manually according to the state of the art and the risks of damage incurred by the grinding wheel.
Pour ce faire, l'invention a pour objet un dispositif d'avivage d'une meule de travail qui, selon l'invention, comprend essentiellement un fourreau pour maintenir latéralement et guider selon son axe longitudinal un bâton de corindon, un vérin pour appliquer un effort constant de poussée du bâton de corindon contre la meule de travail, des moyens de solidarisation de la tige de vérin à l'extrémité d'un bâton de corindon, et des moyens de guidage linéaire du fourreau pour faire translater le bâton de corindon parallèlement à l'axe de la meule de travail en le maintenant poussé contre celle-ci avec le même effort constant.To do this, the subject of the invention is a device for brightening a grinding wheel which, according to the invention, essentially comprises a sheath for holding laterally and guiding a corundum stick, a jack for applying, along its longitudinal axis. a constant thrust force of the corundum stick against the working wheel, means for securing the cylinder rod to the end of a corundum stick, and linear guide means of the sleeve for translating the corundum stick parallel to the axis of the grinding wheel by maintaining it pushed against it with the same constant effort.
Ainsi, le dispositif d'avivage selon l'invention minimise les risques et rend l'avivage plus efficace, plus précis et plus fiable. Le dispositif d'avivage selon l'invention augmente la durée de vie d'une meule de travail et améliore la qualité des pièces rectifiées par celle-ci telles que des pastilles de combustible nucléaire.Thus, the brightening device according to the invention minimizes the risks and makes brightening more efficient, more precise and more reliable. The brightening device according to the invention increases the life of a grinding wheel and improves the quality of the parts ground by it such as nuclear fuel pellets.
Selon un mode de réalisation, le fourreau comprend une rainure ouverte vers le haut et de section transversale à son axe longitudinal en forme de U.According to one embodiment, the sheath comprises an upwardly open groove of cross section with respect to its U-shaped longitudinal axis.
Avantageusement, il est prévu trois galets de guidage du bâton de corindon montés dans le fourreau sensiblement à une même côte longitudinale, deux des galets étant en regard l'un de l'autre et montés chacun sur une branche du U de la rainure et le troisième étant monté sur le haut du U de la rainure., l'espace entre les galets et le fond du U de la rainure étant de dimensions correspondant aux dimensions transversales nominales du bâton de corindon. Les galets facilitent ainsi le guidage du bâton de corindon, réduisent les frottements et assurent une fonction anti-vibration du bâton de corindon dans le fourreau.Advantageously, there are three guide rollers corundum stick mounted in the sleeve substantially at the same longitudinal side, two of the rollers being opposite one another and each mounted on a branch of the U of the groove and the third being mounted on the top of the U of the groove., the space between the rollers and the bottom of the U of the groove being of dimensions corresponding to the nominal transverse dimensions of the corundum stick. The rollers thus facilitate the guiding of the corundum stick, reduce friction and provide an anti-vibration function of the corundum stick in the sheath.
Le vérin est de préférence un vérin double-effet pour permettre en outre la mise à distance du bâton de corindon de la meule de travail.The cylinder is preferably a double-acting cylinder to further allow the distance of the corundum stick of the grinding wheel.
Le vérin est de préférence encore un vérin pneumatique régulé par un détendeur de pression. La pression d'un vérin pneumatique régulée permet de garantir un avivage efficace sans trop de pression sur la meule à aviver.The jack is preferably still a pneumatic cylinder regulated by a pressure regulator. The pressure of a pneumatic cylinder regulated ensures an effective brightening without much pressure on the grinding wheel.
Les moyens de guidage linéaire sont constitués de préférence par des rails à fonctionnement à sec. Ainsi, dans un environnement de boite à gants, un guidage linéaire de type à sec permet d'éviter la présence d'un modérateur dans la boîte à gants, c'est-à-dire d'éviter d'avoir un risque de criticité supplémentaire et d'éviter la pollution par ledit modérateur des pièces à rectifier, telles que les pastilles de combustible nucléaire.The linear guide means are preferably constituted by dry running rails. Thus, in a glove box environment, dry-type linear guiding makes it possible to avoid the presence of a moderator in the glove box, that is to say to avoid having a risk of criticality. additional and avoid pollution by said moderator of the parts to be rectified, such as nuclear fuel pellets.
Le dispositif selon l'invention peut comprendre deux butées de fin de course des moyens de guidage linéaire pour limiter le déplacement du bâton de corindon à la largeur de la meule de travail.The device according to the invention may comprise two end stops of the linear guide means for limiting the displacement of the corundum stick to the width of the working wheel.
Le dispositif comprend avantageusement un chariot en deux parties pivotantes l'une par rapport à l'autre, la partie inférieure du chariot étant guidée en permanence par les moyens de guidage linéaire, la partie supérieure du chariot pivotant entre une position de repos dans laquelle le fourreau est sensiblement parallèle à l'axe de la meule de travail et une position d'avivage dans laquelle le fourreau est sensiblement perpendiculaire à l'axe de la meule de travail.The device advantageously comprises a carriage in two parts pivotable relative to each other, the lower part of the carriage being permanently guided by the linear guide means, the upper part of the pivoting carriage between a rest position in which the sleeve is substantially parallel to the axis of the grinding wheel and a brightening position in which the sleeve is substantially perpendicular to the axis of the grinding wheel.
Un levier de verrouillage manuel du pivotement de la partie supérieure du chariot peut être prévu.A lever for manually locking the pivoting of the upper part of the carriage can be provided.
L'invention concerne également un ensemble d'avivage, destiné à être utilisé pour l'avivage d'une meule de travail, comprenant un bâton de corindon et une pièce, une extrémité de la pièce étant moulée sur la bâton de corindon, la pièce comprenant à l'autre de ses extrémités une gorge formant mortaise adaptée pour loger la tige de vérin du dispositif précédemment décrit, formant tenon en constituant un assemblage à queue d'aronde entre le tenon et la mortaise. Ainsi, avec une telle solidarisation entre le bâton de corindon et le vérin, on peut avoir une mise à distance du bâton de corindon de la meule de travail par le vérin double-effet.The invention also relates to a brightening assembly, for use in brightening a work grinding wheel, comprising a corundum stick and a workpiece, one end of the workpiece being molded on the corundum stick, the workpiece comprising at the other of its ends a groove forming mortise adapted to house the cylinder rod of the device described above, forming a tenon constituting a dovetail assembly between the post and the mortise. Thus, with such a connection between the corundum stick and the jack, one can have a distance of the corundum stick of the grinding wheel by the double-acting cylinder.
La pièce peut comprendre un pion de préhension pour permettre l'introduction manuelle du bâton de corindon dans le fourreau lorsqu'il est neuf et son enlèvement manuel une fois usé.The piece may include a gripping pin to allow manual insertion of the corundum stick into the sleeve when new and its manual removal once worn.
L'invention concerne également une rectifieuse sans centre de pièces comprenant une meule d'entraînement pour faire avancer les pièces et une meule de travail agencée en regard de la meule d'entrainement pour rectifier lesdites pièces et un dispositif d'avivage de meule de travail décrit précédemment et agencé à proximité de la meule de travail en regard de celle-ci à l'opposé de la meule d'entraînement.The invention also relates to a centerless grinding machine comprising a grinding wheel for advancing the workpieces and a grinding wheel arranged next to the grinding wheel for grinding said workpieces and a working grinding device. described above and arranged near the grinding wheel facing it opposite the grinding wheel.
La rectifieuse sans centre est parfaitement adaptée à la rectification de pastilles de combustible nucléaire.The centerless grinding machine is ideally suited for grinding nuclear fuel pellets.
D'autres avantages et caractéristiques ressortiront mieux à la lecture de la description détaillée faite ci-dessous en référence aux figures suivantes parmi lesquelles :
- la
figure 1 une vue de dessus d'un dispositif d'avivage selon l'invention dans une configuration installée à proximité d'une meule de travail à aviver avec un bâton de corindon solidarisé, - la
figure 2 est une vue en coupe longitudinale du dispositif selon lafigure 1 , - les
figures 2A et 2B sont des vues de détail de lafigure 2 , - la
figure 3 montre un ensemble d'avivage avec un bâton de corindon conforme à l'invention. - la
figure 4 est une vue en perspective d'un dispositif d' avivage selon l'invention implantée dans une rectifieuse sans centre de pastilles de combustible nucléaire dans une boite à gants.
- the
figure 1 a top view of a brightening device according to the invention in a configuration installed near a working grindstone to be brightened with a solid corundum stick, - the
figure 2 is a longitudinal sectional view of the device according to thefigure 1 , - the
Figures 2A and 2B are detailed views of thefigure 2 , - the
figure 3 shows a set of brightening with a corundum stick according to the invention. - the
figure 4 is a perspective view of a brightening device according to the invention implanted in a grinding machine without center of nuclear fuel pellets in a glove box.
Les termes « inférieur », « supérieur », « en dessous » et « au dessus » sont à considérer dans la configuration installée du dispositif d'avivage 1 et d'un bâton de corindon, c'est-à-dire avec ce dernier sensiblement à l'horizontale.The terms "lower", "upper", "below" and "above" are to be considered in the installed configuration of the brightener 1 and a corundum stick, that is to say with the latter substantially horizontally.
Le dispositif d'avivage 1 selon l'invention est représenté en configuration installée à proximité d'une meule de travail 2 à aviver.The brightening device 1 according to the invention is shown in configuration installed near a
Tel que représenté, le dispositif 1 est fixé par des vis 21 au bâti 20 supportant la meule de travail.As shown, the device 1 is fixed by
Le dispositif d'avivage 1 comprend tout d'abord un fourreau 10 pour maintenir latéralement et guider selon son axe longitudinal X un bâton de corindon 3.The brightening device 1 comprises, first of all, a
Comme représenté, le fourreau 10 comprend une rainure ouverte vers le haut et de section transversale à son axe longitudinal en forme de U.As shown, the
Comme visible sur la
Le dispositif 1 comprend également un vérin pneumatique à double effet 11 pour appliquer un effort constant de poussée du bâton de corindon 3 maintenu et guidé dans le fourreau 10 contre la meule de travail 2.The device 1 also comprises a double-acting
La solidarisation de la tige 110 de vérin au bâton de corindon 3 est réalisée par un système tenon/mortaise. Plus exactement, il est prévu une pièce intermédiaire de solidarisation 4 entre le bâton de corindon 3 et la tige de vérin 11. Tel qu'illustré de manière plus visible en
Le fourreau 10 et le vérin à double effet 11 sont montés sur la partie supérieure 120 d'un chariot 12.The
Ce chariot 12 est en deux parties 120, 121 pivotantes l'une par rapport à l'autre. La partie inférieure 121 du chariot est montée coulissante en permanence sur des rails 13 de guidage linéaire qui sont parallèles à l'axe Y de la meule de travail 2. Le guidage linéaire sert à déplacer le fourreau 10 sur toute la largeur de la meule de travail 2 sans variation de la distance entre le fourreau 10 en position d'avivage et la meule 2. Le guidage réalisé par les rails est de préférence à sec, lorsque l'avivage est réalisé dans un environnement contraignant, telle qu'une boite à gants d'une rectifieuse sans centre de pastilles de combustible nucléaire: on évite ainsi la présence d'un modérateur dans la boîte à gants (un risque de criticité) et la pollution des pastilles.This
La partie supérieure 120 du chariot 12 est pivotante entre une position de repos dans laquelle le fourreau 10 est sensiblement parallèle à l'axe Y de la meule de travail 2 et une position d' avivage telle que montrée en
En d'autres termes, avec le dispositif d'avivage, on peut faire prendre deux positions à la partie outil, à proprement parler, du dispositif d'avivage constituée par le fourreau 10 et le vérin double effet 11 :
- la position de repos, dans laquelle l'axe du fourreau X et l'axe de la meule Y de travail 2 sont parallèles : cette position est utilisée lors du changement de bâtons de corindon usés,
- la position d'avivage, dans laquelle l'axe du fourreau X et l'axe Y de la meule de travail 2 sont perpendiculaires.
- the rest position, in which the axis of the sheath X and the axis of the working grinding wheel Y are parallel: this position is used when changing spent corundum sticks,
- the brightening position, in which the axis of the sheath X and the Y axis of the
grinding wheel 2 are perpendicular.
Le pivotement entre les deux parties 120, 121 du chariot 12 est verrouillé par le serrage d'un levier de verrouillage 14. Ce levier de verrouillage 14 comporte une vis 140 fixée sur la partie supérieure 120 du chariot 12 et une poignée indexable qui assure le maintien en position dans chacune des deux positions (repos et avivage) de la partie outil 10, 11. La partie outil 10, 11 pivote par desserrage du levier de verrouillage 14 et donc de la vis 140 puis par coulissement de celle-ci dans une ouverture 1200 réalisée sur la partie supérieure 120 du chariot 12. L'ouverture 1200 a une longueur angulaire de 90°, ce qui permet d'assurer la rotation de 0° (position de repos) à 90° (position d'avivage) à la partie outil 10, 11.The pivoting between the two
Ainsi, avec les rails de guidage 13 agencés parallèlement à l'axe Y de la meule de travail 2 et la partie outil 10, 11 pivotée dans sa position d'avivage, le fourreau 10 est guidé linéairement à la perpendiculaire de la meule de travail et sur toute sa largeur : le bâton de corindon 3 est de fait translaté parallèlement à la meule de travail 2 et est maintenu poussé contre celle-ci avec l'effort constant du vérin 11 lors d'une opération d'avivage.Thus, with the guide rails 13 arranged parallel to the Y axis of the
Des vis non décrites sont fixées de chaque coté du chariot inférieur 121 et ont pour fonction de régler le déplacement de la partie outil 10, 11 du dispositif 1 par rapport à la meule de travail 2, ce qui garantit qu'un bâton de corindon 3 ne dépasse pas le bord de la meule de travail 2 à aviver.Undescribed screws are fixed on each side of the
En
En
La meule de travail 2 est ici confinée par un capotage 22. La boite à gants comprend une trappe d'accès (non représentée) destinée usuellement à l'accès à la meule de travail. Le dispositif d'avivage 1 est agencé devant la fenêtre d'accès à la meule : un opérateur, avec les mains dans les gants de la boîte à gants, peut ainsi avoir accès par la trappe au levier 14 de verrouillage manuel, à la partie outil 10, 11 du dispositif ou à tout autre élément de ce dernier.The
Bien que décrite en référence à l'application dans une rectifieuse sans centre pour la rectification de pastilles de combustible nucléaire, on peut envisager l'utilisation du dispositif d'avivage pour toutes applications qui nécessitent un avivage fiable et efficace de meules de travail.Although described with reference to the application in a centerless grinding machine for the grinding of nuclear fuel pellets, the use of the brightening device can be envisaged for all applications that require reliable and efficient brightening of grinding wheels.
Le dispositif selon l'invention qui vient d'être décrit peut en outre utiliser d'autres matériaux que le corindon pour aviver les meules de travail. Il peut s'agir de tout matériau de dureté équivalente au corindon et susceptible d'aviver une meule à base de grains de diamant, tel qu'un abrasif à base d'oxyde d'aluminium, de carbure de silicium ou de quartz.The device according to the invention which has just been described may furthermore use other materials than corundum to brighten the grinding wheels. It can be any hardness material equivalent to corundum and capable of brightening a grinding wheel based on diamond grains, such as an abrasive based on aluminum oxide, silicon carbide or quartz.
Claims (13)
- Device (1) for dressing a grinding wheel (2), comprising a sleeve (10) to hold a dressing rod (3) in position laterally and guide it along its longitudinal X axis, a ram (11) to apply a constant thrust force to the dressing rod held in position and guided in the sleeve in contact with the grinding wheel, linear guide means (13) for the sleeve (10) for translating the dressing rod parallel to the axis (Y) of the grinding wheel while keeping the rod pressed against the grinding wheel with a constant force, characterized in that the dressing rod (3) is a corundum rod and in that the dressing device comprises means (4, 40, 41) for connecting a ram shaft (110) to the end of the corundum rod (3).
- Device (1) for dressing a grinding wheel (2) according to claim 1, in which the sleeve (10) comprises a groove open at the top and with a U-shaped cross-section transverse to its longitudinal axis.
- Device (1) for dressing a grinding wheel (2) according to claim 2, comprising three guide rollers (100, 101, 102) for guiding the dressing rod (3), fitted in the sleeve (10) approximately at the same longitudinal distance, two (101, 102) of the rollers (100, 101, 102) being fitted facing each other on one leg of the U of the groove and the third (100) being fitted at the top of the U of the groove, the dimensions of the space between the rollers (100, 101, 102) and the bottom of the U of the groove corresponding to nominal transverse dimensions of the dressing rod (3).
- Device (1) for dressing a grinding wheel (2) according to one of the previous claims, in which the ram (11) is a double-acting ram.
- Device (1) for dressing a grinding wheel (2) according to one of the previous claims, in which the ram (11) is a pneumatic ram regulated by a pressure reducer.
- Device (1) for dressing a grinding wheel (2) according to one of the previous claims, in which the linear guidance means are composed of rails (13) that function dry.
- Device for dressing a grinding wheel (2) according to one of the previous claims, comprising two limit stops of the linear guide means (13) to limit the displacement of the dressing rod (3) to the width of the grinding wheel (2).
- Device (1) for dressing a grinding wheel (2) according to one of the previous claims, comprising a carriage (12) in two parts (120, 121) pivoting relative to each other, the lower part (121) of the carriage (12) being permanently guided by the linear guidance means (13), the upper part (120) of the carriage (12) pivoting between a rest position in which the sleeve (10) is approximately parallel to the axis (Y) of the grinding wheel (2) and a dressing position in which the sleeve (10) is approximately perpendicular to the axis (Y) of the grinding wheel (2).
- Device (1) for dressing a grinding wheel according to claim 8, comprising a manual locking lever (14) for pivoting the upper part (120) of the carriage (12).
- Dressing assembly used for dressing a grinding wheel (2), comprising a corundum rod (3) and a part (4), characterized in that one end (40) of the part (4) is moulded onto the corundum rod (3), the other end of the part (4) comprising a groove (41) forming a mortise adapted to house the shaft of the ram (11) of the device according to one of the previous claims, forming a tenon and making a dovetail assembly between the tenon and the mortise.
- Dressing assembly according to claim 10, in which the part (4) comprises a gripping pin (42).
- Centreless grinder (5) for parts comprising a drive wheel (6) to advance the parts and a grinding wheel (2) arranged facing the drive wheel (6) to grind said parts and a dressing device (1) for the grinding wheel (2) according to any one of claims 1 to 9 and located close to the grinding wheel and facing it opposite the drive wheel (6).
- Centreless grinder (5) according to claim 12, suited for grinding of nuclear fuel pellets.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1056137A FR2963268B1 (en) | 2010-07-27 | 2010-07-27 | WORKING WHEEL ADVANTAGE DEVICE AND USE THEREOF IN A RECTIFIER WITHOUT A NUCLEAR FUEL PELLET CENTER |
PCT/EP2011/062746 WO2012013633A1 (en) | 2010-07-27 | 2011-07-25 | Device for dressing a grinding wheel, and use thereof in a centerless grinder for nuclear fuel pellets |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2598288A1 EP2598288A1 (en) | 2013-06-05 |
EP2598288B1 true EP2598288B1 (en) | 2014-09-17 |
Family
ID=43640247
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20110735449 Active EP2598288B1 (en) | 2010-07-27 | 2011-07-25 | Device for dressing a grinding wheel, and use thereof in a centerless grinder for nuclear fuel pellets |
Country Status (7)
Country | Link |
---|---|
US (1) | US9022836B2 (en) |
EP (1) | EP2598288B1 (en) |
JP (1) | JP5842312B2 (en) |
CN (1) | CN103124616B (en) |
FR (1) | FR2963268B1 (en) |
RU (1) | RU2581939C2 (en) |
WO (1) | WO2012013633A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105798791B (en) * | 2016-05-13 | 2018-06-29 | 廊坊盛森磨具有限公司 | A kind of grinding wheel manufacturing process high temperature tooling device before curing |
AR117472A1 (en) | 2018-12-21 | 2021-08-11 | Celgene Corp | RIPK2 TIENOPYRIDINE INHIBITORS |
CN113001421B (en) * | 2021-02-18 | 2022-06-17 | 蓝思智能机器人(长沙)有限公司 | Buffing stick making machine |
CN115091379B (en) * | 2022-07-21 | 2023-04-28 | 上海惠而顺精密工具股份有限公司 | Integrated zirconia grinding head processing technology and grinding tool manufactured by same |
Family Cites Families (53)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2187690A (en) * | 1938-09-29 | 1940-01-16 | Norton Co | Form truing |
US2832330A (en) * | 1956-08-09 | 1958-04-29 | William J Hughes | Grinding wheel dresser |
US3122133A (en) * | 1959-08-11 | 1964-02-25 | Landis Tool Co | Preloaded supporting means for grinding machine tool holders |
US3221727A (en) * | 1963-05-31 | 1965-12-07 | Paul J Pitcl | Abrasive wheel dressing device |
FR1595262A (en) | 1968-03-16 | 1970-06-08 | ||
SU429943A1 (en) * | 1972-02-25 | 1974-05-30 | М. И. Годовский | METHOD OF CONTINUING EDITION OF THE DIAMOND CUTTING ROUND |
US4068416A (en) * | 1974-12-20 | 1978-01-17 | General Electric Company | Grinding wheel dressing method |
JPS5733963Y2 (en) * | 1977-02-17 | 1982-07-27 | ||
US4339896A (en) * | 1977-06-13 | 1982-07-20 | General Electric Company | Abrasive compact dressing tools, tool fabrication methods for dressing a grinding wheel with such tools |
US4167081A (en) | 1977-07-07 | 1979-09-11 | Westinghouse Electric Corp. | Centerless grinder |
US4173929A (en) | 1977-11-29 | 1979-11-13 | Documation Incorporated | Printer ribbon anti-fold mechanism |
US4182082A (en) | 1978-01-19 | 1980-01-08 | Ernst Winter & Sohn (Gmbh & Co.) | Method for the profiling of grinding wheels and apparatus therefor |
US4274388A (en) * | 1979-10-15 | 1981-06-23 | The Warner & Swasey Company | Method and apparatus for dressing grinding wheels |
DE3116140A1 (en) | 1981-04-23 | 1982-11-11 | Batal GmbH, 8560 Lauf | Process for parallel alignment of front and rear regulating-wheel-side workpiece guides |
US4434583A (en) | 1981-07-06 | 1984-03-06 | Burgess Jr Warren C | Automatically adjustable workpiece guide and feed mechanism |
US4452223A (en) * | 1982-09-03 | 1984-06-05 | Litton Industrial Products, Inc. | Cylindrical grinding machine truing and dressing device |
US4700936A (en) | 1986-08-26 | 1987-10-20 | Lamb Technicon Corp. | Clamp mechanism |
JPH0333419Y2 (en) * | 1987-04-03 | 1991-07-16 | ||
JPH0413075Y2 (en) | 1987-11-18 | 1992-03-27 | ||
DE3811782A1 (en) * | 1987-12-23 | 1989-07-06 | Fortuna Werke Maschf Ag | METHOD FOR DRESSING GRINDING WHEELS |
JPH01181984A (en) * | 1988-01-14 | 1989-07-19 | S M K:Kk | Chip dresser |
JPH0319756A (en) | 1989-06-15 | 1991-01-28 | Toshin Seiki Kk | Workpiece guide device of centerless grinding machine |
JPH0798300B2 (en) | 1989-09-27 | 1995-10-25 | 光洋機械工業株式会社 | Work guide device for centerless grinding machine |
US5119599A (en) * | 1990-06-04 | 1992-06-09 | Clipper Diamond Tool Co., Inc. | Diamond dressing unit for grinding wheels |
US5309801A (en) | 1992-04-21 | 1994-05-10 | Markle Kenneth E | Micro-adjustable case neck turning tool |
JPH06320421A (en) * | 1993-05-14 | 1994-11-22 | Fuji Oozx Inc | Modifying device for grinding wheel in centerless grinding machine |
JP3090857B2 (en) * | 1994-11-08 | 2000-09-25 | 宮下 政和 | Perimeter processing machine for stepped workpiece |
IT1274498B (en) * | 1995-05-12 | 1997-07-17 | Balance Systems Srl | DEVICE AND COMMAND AND CONTROL PROCEDURE FOR A GRINDING MACHINE |
GB9721511D0 (en) | 1997-10-11 | 1997-12-10 | British Nuclear Fuels Plc | Apparatus for machining workpieces |
JPH11216668A (en) * | 1998-01-30 | 1999-08-10 | Nippei Toyama Corp | Grinding machine |
FR2779134B1 (en) | 1998-05-26 | 2000-06-30 | Cogema | CONVEYING SYSTEM FOR TRANSPORTING SUBSTANTIALLY CYLINDRICAL OBJECTS SUCH AS NUCLEAR FUEL PELLETS |
JPH11333718A (en) * | 1998-05-28 | 1999-12-07 | Aisin Seiki Co Ltd | Grinding method |
JP2000237957A (en) * | 1999-02-22 | 2000-09-05 | Hitachi Seiki Co Ltd | Grinding machine |
JP3471273B2 (en) | 2000-01-27 | 2003-12-02 | 核燃料サイクル開発機構 | Grinding powder recovery equipment for dry grinding machines |
FR2825307B1 (en) | 2001-06-05 | 2004-11-26 | Cogema | METHOD AND DEVICE FOR GRINDING CYLINDRICAL OBJECTS, IN PARTICULAR NUCLEAR FUEL PELLETS |
US6921322B2 (en) * | 2003-01-24 | 2005-07-26 | Artisan Industries, Inc. | Apparatus and methods for refinishing a surface in-situ |
RU30112U1 (en) * | 2003-03-11 | 2003-06-20 | Ашкиназий Яков Михайлович | CENTERLESS CENTRAL GRINDING MACHINE FOR PROCESSING PRODUCTS FOR PASS |
CN2693414Y (en) * | 2003-12-25 | 2005-04-20 | 昆明钢铁股份有限公司 | Grinding wheel dressing mechanism |
EP1716973B1 (en) * | 2004-02-18 | 2009-04-01 | Toyoda Van Moppes Ltd. | Double end face truing device, double end face truing tool, and double end face truing method |
US7223038B2 (en) | 2004-07-06 | 2007-05-29 | Billy Star Holding Ltd | Spreading apparatus for flowable materials |
ATE423656T1 (en) | 2006-03-14 | 2009-03-15 | Wenger Automation & Engineerin | HIGH SPEED CHARGER |
CN200951523Y (en) * | 2006-04-11 | 2007-09-26 | 邓国华 | Abrasion wheel finisher with adjustable prepressure |
JP2008221449A (en) * | 2007-03-16 | 2008-09-25 | Dainippon Printing Co Ltd | Doctor blade polishing device and method of polishing doctor blade |
JP2009006438A (en) | 2007-06-27 | 2009-01-15 | Kyocera Corp | Supporting member for centerless grinder |
CN201105414Y (en) * | 2007-11-27 | 2008-08-27 | 长安汽车(集团)有限责任公司 | Grinding wheel dressing device with measuring apparatus |
WO2010019774A2 (en) * | 2008-08-15 | 2010-02-18 | 3M Innovative Properties Company | Machine for truing abrasive wheels |
CN201249405Y (en) * | 2008-08-20 | 2009-06-03 | 新乡日升数控轴承装备股份有限公司 | Grinding wheel dresser device |
JP5257065B2 (en) | 2008-12-26 | 2013-08-07 | 日本精工株式会社 | Workpiece support and machining apparatus |
CN102725102A (en) * | 2009-05-19 | 2012-10-10 | 圣戈班磨料磨具有限公司 | Method and apparatus for roll grinding |
CN201455808U (en) * | 2009-06-24 | 2010-05-12 | 陈俊 | Automatic finisher for grinding wheel |
JP4890598B2 (en) * | 2009-08-27 | 2012-03-07 | 株式会社トプコン | Polishing device |
CN101712139A (en) * | 2009-11-20 | 2010-05-26 | 南京工大数控科技有限公司 | Grinding wheel dressing method used for slewing support roller path grinding |
FR2963265B1 (en) | 2010-07-27 | 2013-04-12 | Areva Nc | DEVICE FOR THE INTRODUCTION, GUIDANCE AND EVACUATION OF CYLINDRICAL PARTS, SUCH AS NUCLEAR FUEL PELLETS, IN A CENTER-FREE GRINDER |
-
2010
- 2010-07-27 FR FR1056137A patent/FR2963268B1/en not_active Expired - Fee Related
-
2011
- 2011-07-25 US US13/812,621 patent/US9022836B2/en active Active
- 2011-07-25 JP JP2013521095A patent/JP5842312B2/en active Active
- 2011-07-25 CN CN201180046336.6A patent/CN103124616B/en active Active
- 2011-07-25 WO PCT/EP2011/062746 patent/WO2012013633A1/en active Application Filing
- 2011-07-25 RU RU2013108445/02A patent/RU2581939C2/en not_active IP Right Cessation
- 2011-07-25 EP EP20110735449 patent/EP2598288B1/en active Active
Also Published As
Publication number | Publication date |
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CN103124616B (en) | 2015-06-10 |
RU2013108445A (en) | 2014-09-10 |
FR2963268B1 (en) | 2015-03-13 |
EP2598288A1 (en) | 2013-06-05 |
JP2013535346A (en) | 2013-09-12 |
US9022836B2 (en) | 2015-05-05 |
WO2012013633A1 (en) | 2012-02-02 |
RU2581939C2 (en) | 2016-04-20 |
US20130122789A1 (en) | 2013-05-16 |
CN103124616A (en) | 2013-05-29 |
FR2963268A1 (en) | 2012-02-03 |
JP5842312B2 (en) | 2016-01-13 |
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