WO2005056241A1 - Quick clamping device and control method - Google Patents

Quick clamping device and control method Download PDF

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Publication number
WO2005056241A1
WO2005056241A1 PCT/FR2004/003124 FR2004003124W WO2005056241A1 WO 2005056241 A1 WO2005056241 A1 WO 2005056241A1 FR 2004003124 W FR2004003124 W FR 2004003124W WO 2005056241 A1 WO2005056241 A1 WO 2005056241A1
Authority
WO
WIPO (PCT)
Prior art keywords
flange
rod
jack
clamping
clamping device
Prior art date
Application number
PCT/FR2004/003124
Other languages
French (fr)
Inventor
Christophe Boiteux
Original Assignee
Christophe Boiteux
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Christophe Boiteux filed Critical Christophe Boiteux
Priority to EP04805643A priority Critical patent/EP1697088B1/en
Priority to DE602004006647T priority patent/DE602004006647T2/en
Publication of WO2005056241A1 publication Critical patent/WO2005056241A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B5/00—Clamps
    • B25B5/06—Arrangements for positively actuating jaws
    • B25B5/08—Arrangements for positively actuating jaws using cams
    • B25B5/087—Arrangements for positively actuating jaws using cams actuated by a hydraulic or pneumatic piston
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B5/00—Clamps
    • B25B5/06—Arrangements for positively actuating jaws
    • B25B5/061—Arrangements for positively actuating jaws with fluid drive
    • B25B5/064—Arrangements for positively actuating jaws with fluid drive with clamping means pivoting around an axis perpendicular to the pressing direction

Definitions

  • the invention relates, in general, to techniques relating to mechanical machining.
  • the invention relates, according to a first of its aspects, a device for clamping a workpiece on a tool, comprising a jack and a flange, the jack being selectively actuated by a pressurized fluid and itself comprising a body fixed in operation to the tooling and a rod movable relative to the body, and the flange being articulated about a pivot axis on the rod and selectively driven by the rod, this flange struggling over a determined travel between a position clamping position and a relaxed position, and undergoing rotation over at least part of its travel.
  • the rotation of the flange can have the effect of sliding the part to be clamped or deforming it.
  • the main purpose of the invention is to propose a compact, rapid, retractable, powerful clamping device, and moreover free from the aforementioned defects.
  • the device of the invention is essentially characterized by that it further comprises guide members and support elements, in that the guide members comprise a guide member fixed relative to the body and a movable guide member connected to the flange, these guide members fixed and mobile cooperating to drive the flange in a rotational movement around the pivot axis at least at the end of its travel towards its released position and in a translational movement at least at the end of its travel towards its position clamping, and in that the support elements comprise a support element fixed relative to the body and a mobile support element linked to the flange, these fixed and mobile support elements cooperating selectively, at least in the end of travel of the clamp towards its clamping position, to offer each other, at a distance from the guide members, a sliding contact parallel to the translational movement of the clamp and allowing the clamp to brace on the workpiece ser rer.
  • the guide members comprise a guide member fixed relative to the body and a movable guide member connected to the flange, these guide members fixed and mobile cooperating to drive the flange
  • the rod extends along a translation axis which passes between the guide members and the support elements, this arrangement allowing a balancing of the forces resistant to clamping and a very effective self-locking of the flange.
  • the movable guide member is for example constituted by a cam formed by two grooves symmetrically hollowed in the flange on either side of a median plane of the flange and the rod, transverse to one pivot axis.
  • Each groove advantageously has a path whose first and second ends are respectively relatively distant and relatively close to the pivot axis, this path continuously approaching the pivot axis from its first end to its second end, and comprising a portion straight path ending at the first end and a curved path portion, adjacent to the straight path portion and ending at the second end.
  • the flange is fully retractable.
  • the fixed guide member can then be constituted by a pair of pins or rollers fixed to the body of the jack and respectively engaged in the grooves forming the cam.
  • the movable support element is for example constituted by a support heel carried by the flange and extending symmetrically on either side of a median plane of the flange and the rod, transverse to the axis pivoting, the fixed support element then itself being constituted by a support surface of the cylinder body, on which the support heel is supported symmetrically with respect to said median plane.
  • the cylinder is a double-acting cylinder, for example hydraulic, comprising first and second chambers separated by a piston integral with the rod, the flange being driven from its release position to its clamping position by admission of pressurized fluid into the first chamber of the jack, and being driven from its position tightening to its release position by admission of pressurized fluid into the second chamber of the jack.
  • the fixed guide member and the fixed support element can be carried by a part of the body of the jack which is shaped as a yoke, the flange being guided in its median plane between two parallel faces facing this part forming a yoke.
  • the flange is for example shaped as a yoke and encloses the body of the jack which guides it in its median plane.
  • each stud or roller is advantageously located above a plane transverse to the rod containing the pivot axis, in a direction corresponding to the movement that the rod performs to drive the flange towards its released position.
  • the invention also relates, according to a second of its aspects, to a method for controlling the device described above, this method being characterized in that it comprises an operation consisting in measuring the pressure of the actuating fluid admitted into this device and in check the position of the flange and / or the clamping force by checking the value of the pressure measured.
  • FIGS. 1 and 2 are two perspective views of a clamping device according to a first embodiment of the invention and whose flange is in the clamping position;
  • Figure 3 is a perspective view of a clamping device according to a second embodiment of one invention and the flange is in the clamping position;
  • Figure 4 is a partial sectional view of the device illustrated in Figures 1 and 2 but whose flange is in the released position, the section being performed along a plane parallel to the median plane of this device;
  • Figure 5 is a sectional view of the device illustrated in Figures 1 and 2, taken along the median plane of this device;
  • FIG. 6 is a sectional view of the device illustrated in FIGS.
  • Figure 7 is a top view of the device illustrated in Figures 1 and 2;
  • Figure 8 is a partial side view of the device illustrated in Figures 1 and 2;
  • FIG. 9 is a side view of the device illustrated in Figure 3;
  • Figure 10 is a front view of the device illustrated in Figure 3;
  • Figure 11 is a side view of the device illustrated in Figure 3 but the flange of which is in the released position;
  • - Figure 12 is a sectional view of the device illustrated in Figure 3, taken along the median plane of this device.
  • the invention relates to a device for clamping a workpiece P on a tool for machining, this device essentially comprising a jack 1 and a flange 2.
  • the cylinder 1 is for example constituted by a double-acting hydraulic cylinder and comprises a body 10 fixed in operation to the tool itself disposed in a machining center, and a rod 11 movable relative to the body 10 of this cylinder .
  • the body 10 of the jack has a bore inside which a piston 12, integral with the rod 11, delimits two chambers 101 and 102 of variable and complementary volumes, opening to the outside by means of respective ports lOlp and 102p each of which can be connected to a high pressure hydraulic source while the other is connected to a low pressure tank.
  • the flange 2 which is articulated on the rod 11 around a pivot axis X, is driven at will by the rod 11, itself driven by the piston 12.
  • the flange 2 thus struggles, over a determined stroke, between a clamping position illustrated in particular in FIGS. 1 to 3, and a release position, illustrated in Figure 4 for the first embodiment, and in Figure 11 for the second embodiment.
  • the flange 2 is driven from its release position to its clamping position by admission of pressurized fluid into the first chamber 101 of the jack 1, and is driven from its clamping position to its release position by admission of fluid under pressure in the second chamber 102 of this jack 1.
  • the device of the invention derives most of its advantages from the fact that it comprises guide members 3 and support elements 4, the guide members 3 themselves comprising a guide member 31 fixed relative to the body 10 and a movable guide member 32 linked to the flange 2, and the support elements 4 comprising, in the same way, a support element 41 fixed relative to the body 10 and a mobile support element 42 linked to the flange 2.
  • the fixed and movable guide members, 31 and 32 cooperate to drive the flange 2 in a rotational movement around the pivot axis X at least at the end of the travel of this flange towards its released position, and for drive the flange 2 in a translational movement at least at the end of the travel of this flange towards its clamping position.
  • the fixed and mobile support elements, 41 and 42 cooperate, at least at the end of the travel of the flange 2 towards its clamping position, to offer each other, at a distance from the guide members 3 , a sliding contact parallel to the translational movement of the flange 2 and allowing a bridle 2 bracing on the workpiece P.
  • the rod 11 preferably extends along a translation axis Z which passes between the guide members 3 and the support elements 4.
  • the movable guide member 32 is constituted by a cam formed by two grooves, such as 32a, symmetrically hollowed out in the flange 2 on either side of a median plane M of the device , this median plane M being transverse to the pivot axis X and constituting a plane of symmetry for the flange 2 and for the rod 11.
  • the flange 2 In addition to the groove 32a, the flange 2 therefore has a groove 32b which, although not visible in the figures, is deduced from the groove 32a by symmetry with respect to the plane M.
  • Each of the grooves 32a and 32b has a path which continuously approaches the pivot axis X from the first end 321 of this path towards its second end 322. As shown in FIGS. 4, 9 and 11, this path comprises a portion of rectilinear path 320r which ends at the first end 321 and a portion of curved path 320c, adjacent to the portion of rectilinear path 320r and ending at the second end 322.
  • the fixed guide member 31 is itself constituted by a pair of pins or rollers, such as 31a, fixed to the body 10 of the jack 1 and respectively engaged in the grooves forming the cam.
  • the body 10 In addition to the stud or the roller 31a engaged in the groove 32a, the body 10 therefore has a stud or a roller 31b engaged in the groove 32b and which, although not visible in the figures, is deduced from the stud or roller 31a by symmetry by relation to the median plane M.
  • each stud or roller such as 31a is located above a plane T which is transverse to the rod 11 and which contains the pivot axis X, when following a direction which corresponds to the movement carried out by the rod 11 to drive the flange 2 to its relaxed position.
  • the movable support element 42 is constituted by a support heel which is carried by the flange 2 and which extends symmetrically on either side of the median plane M of the device.
  • the fixed support element 41 is in turn constituted by an external support surface of the body 10 of the jack 1, on which the support heel 42 is symmetrically supported relative to this same median plane M.
  • the rod 11 leaves the jack 1 on the side of its first chamber 101.
  • the fixed guide member 31 and the fixed support element 41 are advantageously carried by a part 100 of the body 10 of the jack which is shaped as a yoke, and the flange 2 is then guided in its median plane M between two parallel opposite faces, 100a and 100b, belonging to this part 100 forming a yoke.
  • This embodiment allows a significant rotation of the flange 2 between its tightening position and its relaxed position, typically a rotation of amplitude equal to or greater than 90 degrees.
  • the cylinder 1 can in this case be mounted in a base 5 fixed on the tool, forming a fluid distributor, and therefore itself comprising two fluid input-output ports lOlq and 102q corresponding respectively to the ports lOlp and 102p of the jack 1.
  • the rod 11 emerges from the jack 1 on the side of its second chamber 102.
  • the flange 2 which is shaped as a yoke, this flange then enclosing the body 10 of the jack 1, which guides it in its median plane M.
  • the measured pressure it is therefore possible to provide for the measured pressure to reach or exceed a determined minimum threshold, typically to prevent the clamping force from being insufficient, or to provide for the measured pressure to remain below a determined maximum threshold. , for example to prevent the clamping force from damaging the workpiece.
  • this process has the additional advantage of allowing very fine adjustment of the clamping force in the case where the actuating fluid consists of compressed air.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jigs For Machine Tools (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Communication Control (AREA)
  • Clamps And Clips (AREA)

Abstract

The invention relates to a device for clamping a workpiece mainly comprising a power cylinder (1) and a shackle (2) movable between a releasing position and a clamping position. The inventive device also comprises a guiding element (3) interacting in order to drive the shackle (2) along a rotation movement at the end of the pathway thereof towards the releasing position thereof and along a translation movement at the end of the pathway thereof to the clamping position thereof and rest elements interacting at the end of the shackle (2) pathway to the clamping position thereof in order to be mutually provided with a sliding contact in a direction which is parallel to the translation movement of the shackle (2) and remote from the guiding elements (3), thereby enabling said shackle (2) to be pressed against a clamped piece (P).

Description

DISPOSITIF DE SERRAGE PRECIS A ACTIONNEMENT RAPIDE, ET PROCEDE DE COMMANDE. PRECISION FAST ACTUATION CLAMPING DEVICE, AND CONTROL METHOD.
L'invention concerne, de façon générale, les techniques relatives à l'usinage mécanique.The invention relates, in general, to techniques relating to mechanical machining.
Plus précisément, l'invention concerne, selon un premier de ses aspects, un dispositif de serrage d'une pièce sur un outillage, comprenant un vérin et une bride, le vérin étant sélectivement actionné par un fluide sous pression et comprenant lui-même un corps fixé en fonctionnement à l'outillage et une tige mobile par rapport au corps, et la bride étant articulée autour d'un axe de pivotement sur la tige et sélectivement entraînée par la tige, cette bride se débattant sur une course déterminée entre une position de serrage et une position de relâchement, et subissant une rotation sur une partie au moins de sa course.More specifically, the invention relates, according to a first of its aspects, a device for clamping a workpiece on a tool, comprising a jack and a flange, the jack being selectively actuated by a pressurized fluid and itself comprising a body fixed in operation to the tooling and a rod movable relative to the body, and the flange being articulated about a pivot axis on the rod and selectively driven by the rod, this flange struggling over a determined travel between a position clamping position and a relaxed position, and undergoing rotation over at least part of its travel.
Les dispositifs de serrage sont bien connus en construction mécanique.Clamping devices are well known in mechanical engineering.
Dans leur forme de réalisation la plus ancienne et la plus rudimentaire, ces dispositifs utilisent des vérins à vis fonctionnant à la manière d'un étau, ces dispositifs ayant cependant le défaut aujourd'hui rédhibitoire d'exiger un temps d'actionnement très important . Dans les dispositifs de serrage plus récents, qui utilisent des vérins hydrauliques ou pneumatiques, la bride est approchée de la pièce à serrer et appliquée sur elle par simple rotation de cette bride autour de son axe de pivotement .In their oldest and most rudimentary embodiment, these devices use screw jacks operating in the manner of a vice, these devices however having the prohibitive defect today of requiring a very significant actuation time. In more recent clamping devices, which use hydraulic or pneumatic cylinders, the flange is approached from the part to be clamped and applied to it by simple rotation of this flange around its pivot axis.
Bien qu'ils puissent être actionnés rapidement, ces dispositifs présentent cependant eux-mêmes plusieurs défauts.Although they can be actuated quickly, these devices themselves have several faults.
En particulier, la rotation de la bride peut avoir pour effet de faire glisser la pièce à serrer ou de la déformer.In particular, the rotation of the flange can have the effect of sliding the part to be clamped or deforming it.
Compte tenu de la distance relativement importante entre son axe de rotation et son appui sur la pièce à serrer, la bride elle-même peut subir un flambage, ce qui provoque une imprécision inacceptable du serrage.Given the relatively large distance between its axis of rotation and its support on the part to be clamped, the flange itself can undergo buckling, which causes unacceptable imprecision of the clamping.
De plus, l'importance du couple résistant au serrage oblige à sur-dimensionner les dispositifs connus de ce type.In addition, the importance of the torque resistant to tightening means that the known devices of this type must be oversized.
Dans ce contexte, l'invention a pour but principal de proposer un dispositif de serrage compact, rapide, escamotable, puissant, et de surcroît exempt des défauts précédemment mentionnés.In this context, the main purpose of the invention is to propose a compact, rapid, retractable, powerful clamping device, and moreover free from the aforementioned defects.
A cette fin, le dispositif de l'invention, par ailleurs conforme à la définition générique qu'en donne le préambule ci-dessus, est essentiellement caractérisé en ce qu'il comprend en outre des organes de guidage et des éléments d'appui, en ce que les organes de guidage comprennent un organe de guidage fixe par rapport au corps et un organe de guidage mobile lié à la bride, ces organes de guidage fixe et mobile coopérant pour entraîner la bride suivant un mouvement de rotation autour de l'axe de pivotement au moins à la fin de sa course vers sa position de relâchement et suivant un mouvement de translation au moins à la fin de sa course vers sa position de serrage, et en ce que les éléments d'appui comprennent un élément d'appui fixe par rapport au corps et un élément d'appui mobile lié à la bride, ces éléments d'appui fixe et mobile coopérant sélectivement, au moins à la fin de la course de la bride vers sa position de serrage, pour s'offrir mutuellement, à distance des organes de guidage, un contact glissant parallèle au mouvement de translation de la bride et permettant un arc-boutement de la bride sur la pièce à serrer.To this end, the device of the invention, moreover conforms to the generic definition given in the preamble above, is essentially characterized by that it further comprises guide members and support elements, in that the guide members comprise a guide member fixed relative to the body and a movable guide member connected to the flange, these guide members fixed and mobile cooperating to drive the flange in a rotational movement around the pivot axis at least at the end of its travel towards its released position and in a translational movement at least at the end of its travel towards its position clamping, and in that the support elements comprise a support element fixed relative to the body and a mobile support element linked to the flange, these fixed and mobile support elements cooperating selectively, at least in the end of travel of the clamp towards its clamping position, to offer each other, at a distance from the guide members, a sliding contact parallel to the translational movement of the clamp and allowing the clamp to brace on the workpiece ser rer.
De préférence, la tige s'étend suivant un axe de translation qui passe entre les organes de guidage et les éléments d'appui, cet agencement permettant un équilibrage des forces résistantes au serrage et un auto-blocage très efficace de la bride.Preferably, the rod extends along a translation axis which passes between the guide members and the support elements, this arrangement allowing a balancing of the forces resistant to clamping and a very effective self-locking of the flange.
L'organe de guidage mobile est par exemple constitué par une came formée de deux rainures creusées symétriquement dans la bride de part et d'autre d'un plan médian de la bride et de la tige, transversal à 1 ' axe de pivotement . Chaque rainure présente avantageusement un trajet dont des première et seconde extrémités sont respectivement relativement distante et relativement proche de l'axe de pivotement, ce trajet se rapprochant continûment de l'axe de pivotement depuis sa première extrémité vers sa seconde extrémité, et comprenant une portion de trajet rectiligne se terminant à la première extrémité et une portion de trajet courbe, adjacente à la portion de trajet rectiligne et se terminant à la seconde extrémité .The movable guide member is for example constituted by a cam formed by two grooves symmetrically hollowed in the flange on either side of a median plane of the flange and the rod, transverse to one pivot axis. Each groove advantageously has a path whose first and second ends are respectively relatively distant and relatively close to the pivot axis, this path continuously approaching the pivot axis from its first end to its second end, and comprising a portion straight path ending at the first end and a curved path portion, adjacent to the straight path portion and ending at the second end.
Grâce à cet agencement, la bride est escamotable de façon totalement automatique.Thanks to this arrangement, the flange is fully retractable.
L'organe de guidage fixe peut alors être constitué par une paire de tétons ou de galets fixés au corps du vérin et respectivement engagés dans les rainures formant la came .The fixed guide member can then be constituted by a pair of pins or rollers fixed to the body of the jack and respectively engaged in the grooves forming the cam.
L'élément d'appui mobile est par exemple constitué par un talon d'appui porté par la bride et s 'étendant symétriquement de part et d'autre d'un plan médian de la bride et de la tige, transversal à l'axe de pivotement, l'élément d'appui fixe étant alors lui-même constitué par une surface d'appui du corps du vérin, sur laquelle le talon d'appui s'appuie symétriquement par rapport audit plan médian.The movable support element is for example constituted by a support heel carried by the flange and extending symmetrically on either side of a median plane of the flange and the rod, transverse to the axis pivoting, the fixed support element then itself being constituted by a support surface of the cylinder body, on which the support heel is supported symmetrically with respect to said median plane.
Dans un mode de réalisation préféré de l'invention, le vérin est un vérin à double effet, par exemple hydraulique, comprenant des première et seconde chambres séparées par un piston solidaire de la tige, la bride étant entraînée de sa position de relâchement vers sa position de serrage par admission de fluide sous pression dans la première chambre du vérin, et étant entraînée de sa position de serrage vers sa position de relâchement par admission de fluide sous pression dans la seconde chambre du vérin.In a preferred embodiment of the invention, the cylinder is a double-acting cylinder, for example hydraulic, comprising first and second chambers separated by a piston integral with the rod, the flange being driven from its release position to its clamping position by admission of pressurized fluid into the first chamber of the jack, and being driven from its position tightening to its release position by admission of pressurized fluid into the second chamber of the jack.
Dans le cas où la tige sort du vérin du côté de sa première chambre, l'organe de guidage fixe et l'élément d'appui fixe peuvent être portés par une partie du corps du vérin qui est conformée en chape, la bride étant guidée dans son plan médian entre deux faces parallèles en vis-à-vis de cette partie formant chape.In the case where the rod comes out of the jack on the side of its first chamber, the fixed guide member and the fixed support element can be carried by a part of the body of the jack which is shaped as a yoke, the flange being guided in its median plane between two parallel faces facing this part forming a yoke.
En revanche, dans le cas où la tige sort du vérin du côté de sa seconde chambre, la bride est par exemple conformée en chape et enserre le corps du vérin qui la guide dans son plan médian.On the other hand, in the case where the rod leaves the jack on the side of its second chamber, the flange is for example shaped as a yoke and encloses the body of the jack which guides it in its median plane.
Dans ces deux cas, chaque téton ou galet est avantageusement situé au-dessus d'un plan transversal à la tige contenant l'axe de pivotement, suivant une direction correspondant au mouvement qu'effectue la tige pour entraîner la bride vers sa position de relâchement .In these two cases, each stud or roller is advantageously located above a plane transverse to the rod containing the pivot axis, in a direction corresponding to the movement that the rod performs to drive the flange towards its released position. .
Un escamotage parfait de la bride peut être obtenu en prévoyant que la bride effectue une rotation au moins égale à 90 degrés entre sa position de serrage et sa position de relâchement.Perfect retraction of the flange can be obtained by providing that the flange rotates at least equal to 90 degrees between its tightening position and its relaxed position.
L'invention concerne également, selon un second de ses aspects, un procédé de commande du dispositif précédemment décrit, ce procédé étant caractérisé en ce qu'il comprend une opération consistant à mesurer la pression du fluide d'actionnement admis dans ce dispositif et à contrôler la position de la bride et / ou l'effort de bridage en vérifiant la valeur de la pression mesurée.The invention also relates, according to a second of its aspects, to a method for controlling the device described above, this method being characterized in that it comprises an operation consisting in measuring the pressure of the actuating fluid admitted into this device and in check the position of the flange and / or the clamping force by checking the value of the pressure measured.
D'autres caractéristiques et avantages de l'invention ressortiront clairement de la description qui en est faite ci-après, à titre indicatif et nullement limitatif, en référence aux dessins annexés, dans lesquels :Other characteristics and advantages of the invention will emerge clearly from the description given below, by way of indication and in no way limitative, with reference to the appended drawings, in which:
- les figures 1 et 2 sont deux vues en perspective d'un dispositif de serrage conforme à un premier mode de réalisation de l'invention et dont la bride est en position de serrage; la figure 3 est une vue en perspective d'un dispositif de serrage conforme à un second mode de réalisation de 1 ' invention et dont la bride est en position de serrage; la figure 4 est une vue en coupe partielle du dispositif illustré aux figures 1 et 2 mais dont la bride est en position de relâchement, la coupe étant réalisée suivant un plan parallèle au plan médian de ce dispositif; la figure 5 est une vue en coupe du dispositif illustré aux figures 1 et 2, réalisée suivant le plan médian de ce dispositif; la figure 6 est une vue en coupe du dispositif illustré aux figures 1 et 2 et complété par une embase formant à la fois distributeur de fluide et support d'intégration du dispositif dans l'outillage, la coupe étant réalisée suivant le plan médian de ce dispositif; la figure 7 est une vue de dessus du dispositif illustré aux figures 1 et 2 ; la figure 8 est une vue latérale partielle du dispositif illustré aux figures 1 et 2;- Figures 1 and 2 are two perspective views of a clamping device according to a first embodiment of the invention and whose flange is in the clamping position; Figure 3 is a perspective view of a clamping device according to a second embodiment of one invention and the flange is in the clamping position; Figure 4 is a partial sectional view of the device illustrated in Figures 1 and 2 but whose flange is in the released position, the section being performed along a plane parallel to the median plane of this device; Figure 5 is a sectional view of the device illustrated in Figures 1 and 2, taken along the median plane of this device; FIG. 6 is a sectional view of the device illustrated in FIGS. 1 and 2 and supplemented by a base forming both a fluid distributor and a support for integrating the device into the tool, the section being taken along the median plane of this device; Figure 7 is a top view of the device illustrated in Figures 1 and 2; Figure 8 is a partial side view of the device illustrated in Figures 1 and 2;
- la figure 9 est une vue latérale du dispositif illustré à la figure 3; la figure 10 est une vue de face du dispositif illustré à la figure 3; la figure 11 est une vue latérale du dispositif illustré à la figure 3 mais dont la bride est en position de relâchement; et - la figure 12 est une vue en coupe du dispositif illustré à la figure 3, réalisée suivant le plan médian de ce dispositif.- Figure 9 is a side view of the device illustrated in Figure 3; Figure 10 is a front view of the device illustrated in Figure 3; Figure 11 is a side view of the device illustrated in Figure 3 but the flange of which is in the released position; and - Figure 12 is a sectional view of the device illustrated in Figure 3, taken along the median plane of this device.
Comme annoncé précédemment, l'invention concerne un dispositif pour serrer une pièce P sur un outillage en vue de son usinage, ce dispositif comprenant essentiellement un vérin 1 et une bride 2.As previously announced, the invention relates to a device for clamping a workpiece P on a tool for machining, this device essentially comprising a jack 1 and a flange 2.
Le vérin 1 est par exemple constitué par un vérin hydraulique à double effet et comprend un corps 10 fixé en fonctionnement à l'outillage lui-même disposé dans un centre d'usinage, et une tige 11 mobile par rapport au corps 10 de ce vérin.The cylinder 1 is for example constituted by a double-acting hydraulic cylinder and comprises a body 10 fixed in operation to the tool itself disposed in a machining center, and a rod 11 movable relative to the body 10 of this cylinder .
Le corps 10 du vérin présente un alésage à l'intérieur duquel un piston 12, solidaire de la tige 11, délimite deux chambres 101 et 102 de volumes variables et complémentaires, s ' ouvrant sur l'extérieur au moyen de ports respectifs lOlp et 102p dont chacun peut être relié à une source hydraulique de haute pression pendant que l'autre est relié à un réservoir à basse pression.The body 10 of the jack has a bore inside which a piston 12, integral with the rod 11, delimits two chambers 101 and 102 of variable and complementary volumes, opening to the outside by means of respective ports lOlp and 102p each of which can be connected to a high pressure hydraulic source while the other is connected to a low pressure tank.
La bride 2, qui est articulée sur la tige 11 autour d'un axe de pivotement X, est entraînée à volonté par la tige 11, elle-même entraînée par le piston 12.The flange 2, which is articulated on the rod 11 around a pivot axis X, is driven at will by the rod 11, itself driven by the piston 12.
La bride 2 se débat ainsi, sur une course déterminée, entre une position de serrage illustrée notamment aux figures 1 à 3, et une position de relâchement, illustrée à la figure 4 pour le premier mode de réalisation, et à la figure 11 pour le second mode de réalisation.The flange 2 thus struggles, over a determined stroke, between a clamping position illustrated in particular in FIGS. 1 to 3, and a release position, illustrated in Figure 4 for the first embodiment, and in Figure 11 for the second embodiment.
Dans ces conditions, la bride 2 est entraînée de sa position de relâchement vers sa position de serrage par admission de fluide sous pression dans la première chambre 101 du vérin 1, et est entraînée de sa position de serrage vers sa position de relâchement par admission de fluide sous pression dans la seconde chambre 102 de ce vérin 1.Under these conditions, the flange 2 is driven from its release position to its clamping position by admission of pressurized fluid into the first chamber 101 of the jack 1, and is driven from its clamping position to its release position by admission of fluid under pressure in the second chamber 102 of this jack 1.
Le dispositif de l'invention tire l'essentiel de ses avantages du fait qu'il comprend des organes de guidage 3 et des éléments d'appui 4, les organes de guidage 3 comprenant eux-mêmes un organe de guidage 31 fixe par rapport au corps 10 et un organe de guidage mobile 32 lié à la bride 2, et les éléments d'appui 4 comprenant, de la même façon, un élément d'appui 41 fixe par rapport au corps 10 et un élément d'appui mobile 42 lié à la bride 2.The device of the invention derives most of its advantages from the fact that it comprises guide members 3 and support elements 4, the guide members 3 themselves comprising a guide member 31 fixed relative to the body 10 and a movable guide member 32 linked to the flange 2, and the support elements 4 comprising, in the same way, a support element 41 fixed relative to the body 10 and a mobile support element 42 linked to the flange 2.
Les organes de guidage fixe et mobile, 31 et 32, coopèrent pour entraîner la bride 2 suivant un mouvement de rotation autour de l'axe de pivotement X au moins à la fin de la course de cette bride vers sa position de relâchement, et pour entraîner la bride 2 suivant un mouvement de translation au moins à la fin de la course de cette bride vers sa position de serrage . De leur côté, les éléments d'appui fixe et mobile, 41 et 42, coopèrent, au moins à la fin de la course de la bride 2 vers sa position de serrage, pour s'offrir mutuellement, à distance des organes de guidage 3, un contact glissant parallèle au mouvement de translation de la bride 2 et permettant un arc-boutement de la bride 2 sur la pièce à serrer P.The fixed and movable guide members, 31 and 32, cooperate to drive the flange 2 in a rotational movement around the pivot axis X at least at the end of the travel of this flange towards its released position, and for drive the flange 2 in a translational movement at least at the end of the travel of this flange towards its clamping position. For their part, the fixed and mobile support elements, 41 and 42, cooperate, at least at the end of the travel of the flange 2 towards its clamping position, to offer each other, at a distance from the guide members 3 , a sliding contact parallel to the translational movement of the flange 2 and allowing a bridle 2 bracing on the workpiece P.
Selon une autre caractéristique importante de l'invention, la tige 11 s'étend de préférence suivant un axe de translation Z qui passe entre les organes de guidage 3 et les éléments d'appui 4.According to another important characteristic of the invention, the rod 11 preferably extends along a translation axis Z which passes between the guide members 3 and the support elements 4.
Dans chacun des deux modes de réalisation illustrés, l'organe de guidage mobile 32 est constitué par une came formée de deux rainures, telles que 32a, creusées symétriquement dans la bride 2 de part et d'autre d'un plan médian M du dispositif, ce plan médian M étant transversal à l'axe de pivotement X et constituant un plan de symétrie pour la bride 2 et pour la tige 11.In each of the two illustrated embodiments, the movable guide member 32 is constituted by a cam formed by two grooves, such as 32a, symmetrically hollowed out in the flange 2 on either side of a median plane M of the device , this median plane M being transverse to the pivot axis X and constituting a plane of symmetry for the flange 2 and for the rod 11.
Outre la rainure 32a, la bride 2 présente donc une rainure 32b qui, bien que non visible sur les figures, se déduit de la rainure 32a par symétrie par rapport au plan M.In addition to the groove 32a, the flange 2 therefore has a groove 32b which, although not visible in the figures, is deduced from the groove 32a by symmetry with respect to the plane M.
Chacune des rainures 32a et 32b présente un trajet qui se rapproche continûment de l'axe de pivotement X depuis la première extrémité 321 de ce trajet vers sa seconde extrémité 322. Comme le montrent les figures 4, 9, et 11, ce trajet comporte une portion de trajet rectiligne 320r qui se termine à la première extrémité 321 et une portion de trajet courbe 320c, adjacente à la portion de trajet rectiligne 320r et se terminant à la seconde extrémité 322.Each of the grooves 32a and 32b has a path which continuously approaches the pivot axis X from the first end 321 of this path towards its second end 322. As shown in FIGS. 4, 9 and 11, this path comprises a portion of rectilinear path 320r which ends at the first end 321 and a portion of curved path 320c, adjacent to the portion of rectilinear path 320r and ending at the second end 322.
L'organe de guidage fixe 31 est quant à lui constitué par une paire de tétons ou de galets, tels que 31a, fixés au corps 10 du vérin 1 et respectivement engagés dans les rainures formant la came.The fixed guide member 31 is itself constituted by a pair of pins or rollers, such as 31a, fixed to the body 10 of the jack 1 and respectively engaged in the grooves forming the cam.
Outre le téton ou le galet 31a engagé dans la rainure 32a, le corps 10 présente donc un téton ou un galet 31b engagé dans la rainure 32b et qui, bien que non visible sur les figures, se déduit du téton ou galet 31a par symétrie par rapport au plan médian M.In addition to the stud or the roller 31a engaged in the groove 32a, the body 10 therefore has a stud or a roller 31b engaged in the groove 32b and which, although not visible in the figures, is deduced from the stud or roller 31a by symmetry by relation to the median plane M.
Comme le montrent les figures 4 et 11, chaque téton ou galet tel que 31a est situé au-dessus d'un plan T qui est transversal à la tige 11 et qui contient l'axe de pivotement X, lorsqu'on suit une direction qui correspond au mouvement qu'effectue la tige 11 pour entraîner la bride 2 vers sa position de relâchement.As shown in Figures 4 and 11, each stud or roller such as 31a is located above a plane T which is transverse to the rod 11 and which contains the pivot axis X, when following a direction which corresponds to the movement carried out by the rod 11 to drive the flange 2 to its relaxed position.
L'élément d'appui mobile 42 est constitué par un talon d'appui qui est porté par la bride 2 et qui s'étend symétriquement de part et d'autre du plan médian M du dispositif . L'élément d'appui fixe 41 est quant à lui constitué par une surface d'appui externe du corps 10 du vérin 1, sur laquelle le talon d'appui 42 s'appuie symétriquement par rapport à ce même plan médian M.The movable support element 42 is constituted by a support heel which is carried by the flange 2 and which extends symmetrically on either side of the median plane M of the device. The fixed support element 41 is in turn constituted by an external support surface of the body 10 of the jack 1, on which the support heel 42 is symmetrically supported relative to this same median plane M.
Dans le premier mode de réalisation de l'invention, illustré aux figures 1, 2, et 4 à 8 , la tige 11 sort du vérin 1 du côté de sa première chambre 101.In the first embodiment of the invention, illustrated in FIGS. 1, 2, and 4 to 8, the rod 11 leaves the jack 1 on the side of its first chamber 101.
Dans ce cas, l'organe de guidage fixe 31 et l'élément d'appui fixe 41 sont avantageusement portés par une partie 100 du corps 10 du vérin qui est conformée en chape, et la bride 2 est alors guidée dans son plan médian M entre deux faces parallèles en vis-à-vis, 100a et 100b, appartenant à cette partie 100 formant chape.In this case, the fixed guide member 31 and the fixed support element 41 are advantageously carried by a part 100 of the body 10 of the jack which is shaped as a yoke, and the flange 2 is then guided in its median plane M between two parallel opposite faces, 100a and 100b, belonging to this part 100 forming a yoke.
Ce mode de réalisation autorise une rotation importante de la bride 2 entre sa position de serrage et sa position de relâchement, typiquement une rotation d'amplitude égale ou supérieure à 90 degrés.This embodiment allows a significant rotation of the flange 2 between its tightening position and its relaxed position, typically a rotation of amplitude equal to or greater than 90 degrees.
En outre, comme le montre la figure 6, le vérin 1 peut dans ce cas être monté dans une embase 5 fixée sur l'outillage, formant distributeur de fluide, et comprenant donc elle-même deux ports d'entrée-sortie de fluide lOlq et 102q correspondant respectivement aux ports lOlp et 102p du vérin 1.In addition, as shown in Figure 6, the cylinder 1 can in this case be mounted in a base 5 fixed on the tool, forming a fluid distributor, and therefore itself comprising two fluid input-output ports lOlq and 102q corresponding respectively to the ports lOlp and 102p of the jack 1.
Dans le second mode de réalisation de l'invention, illustré aux figures 3 et 9 à 12, la tige 11 sort du vérin 1 du côté de sa deuxième chambre 102. Dans ce cas, c'est de préférence la bride 2 qui est conformée en chape, cette bride enserrant alors le corps 10 du vérin 1, qui la guide dans son plan médian M.In the second embodiment of the invention, illustrated in FIGS. 3 and 9 to 12, the rod 11 emerges from the jack 1 on the side of its second chamber 102. In this case, it is preferably the flange 2 which is shaped as a yoke, this flange then enclosing the body 10 of the jack 1, which guides it in its median plane M.
Pour commander de façon optimale 1 'actionnement du dispositif précédemment décrit, il est recommandé de mesurer la pression du fluide d'actionnement admis dans ce dispositif, de sorte qu'il est alors possible de contrôler la position de la bride et / ou l'effort de bridage en vérifiant la valeur de la pression mesurée.To optimally control the actuation of the device described above, it is recommended to measure the pressure of the actuating fluid admitted into this device, so that it is then possible to control the position of the flange and / or the clamping force by checking the value of the pressure measured.
En particulier, il est donc possible de prévoir que la pression mesurée atteigne ou dépasse un seuil minimal déterminé, typiquement pour éviter que l'effort de bridage ne soit insuffisant, ou de prévoir que la pression mesurée reste en dessous d'un seuil maximal déterminé, par exemple pour éviter que l'effort de bridage ne soit dommageable à la pièce à usiner.In particular, it is therefore possible to provide for the measured pressure to reach or exceed a determined minimum threshold, typically to prevent the clamping force from being insufficient, or to provide for the measured pressure to remain below a determined maximum threshold. , for example to prevent the clamping force from damaging the workpiece.
Compte tenu de la compressibilité de l'air, ce procédé présente de surcroît l'avantage de permettre un réglage très fin de l'effort de bridage dans le cas où le fluide d'actionnement est constitué par de l'air comprimé . Given the compressibility of the air, this process has the additional advantage of allowing very fine adjustment of the clamping force in the case where the actuating fluid consists of compressed air.

Claims

REVENDICATIONS . CLAIMS.
1. Dispositif de serrage d'une pièce (P) sur un outillage, comprenant un vérin (1) et une bride (2) , le vérin (1) étant sélectivement actionné par un fluide sous pression et comprenant lui-même un corps (10) fixé en fonctionnement à l'outillage et une tige (11) mobile par rapport au corps (10) , et la bride (2) étant articulée autour d'un axe de pivotement (X) sur la tige (11) et sélectivement entraînée par la tige (11) , cette bride (2) se débattant sur une course déterminée entre une position de serrage et une position de relâchement, et subissant une rotation sur une partie au moins de sa course, caractérisé en ce qu'il comprend en outre des organes de guidage (3) et des éléments d'appui (4), en ce que les organes de guidage (3) comprennent un organe de guidage (31) fixe par rapport au corps (10) et un organe de guidage mobile (32) lié à la bride (2) , ces organes de guidage fixe et mobile (31, 32) coopérant pour entraîner la bride (2) suivant un mouvement de rotation autour de l'axe de pivotement (X) au moins à la fin de sa course vers sa position de relâchement et suivant un mouvement de translation au moins à la fin de sa course vers sa position de serrage, et en ce que les éléments d'appui (4) comprennent un élément d'appui (41) fixe par rapport au corps (10) et un élément d'appui mobile (42) lié à la bride (2), ces éléments d'appui fixe et mobile (41, 42) coopérant sélectivement, au moins à la fin de la course de la bride (2) vers sa position de serrage, pour s'offrir mutuellement, à distance des organes de guidage (3) , un contact glissant parallèle au mouvement de translation de la bride (2) et permettant un arc-boutement de la bride (2) sur la pièce à serrer (P) . 1. Device for clamping a workpiece (P) on a tool, comprising a cylinder (1) and a flange (2), the cylinder (1) being selectively actuated by a pressurized fluid and itself comprising a body ( 10) fixed in operation to the tool and a rod (11) movable relative to the body (10), and the flange (2) being articulated about a pivot axis (X) on the rod (11) and selectively driven by the rod (11), this flange (2) struggling over a determined travel between a clamping position and a release position, and undergoing rotation over at least part of its travel, characterized in that it comprises further guide members (3) and support elements (4), in that the guide members (3) comprise a guide member (31) fixed relative to the body (10) and a guide member mobile (32) linked to the flange (2), these fixed and mobile guide members (31, 32) cooperating to drive the flange (2) according to a movement of rotation about the pivot axis (X) at least at the end of its stroke towards its release position and in a translational movement at least at the end of its stroke towards its clamping position, and in that the support elements (4) comprise a support element (41) fixed relative to the body (10) and a mobile support element (42) linked to the flange (2), these fixed and mobile support elements (41, 42) cooperating selectively, at least at the end of the stroke of the flange (2) towards its clamping position, to offer each other, at a distance from the guide members (3), a sliding contact parallel to the translational movement of the flange (2) and allowing the bridle to brace ( 2) on the workpiece (P).
2. Dispositif de serrage suivant la revendication 1, caractérisé en ce que la tige (11) s'étend suivant un axe de translation (Z) qui passe entre les organes de guidage (3) et les éléments d'appui (4). 2. Clamping device according to claim 1, characterized in that the rod (11) extends along a translation axis (Z) which passes between the guide members (3) and the support elements (4).
3. Dispositif de serrage suivant la revendication 1 ou 2 , caractérisé en ce que l'organe de guidage mobile (32) est constitué par une came formée de deux rainures (32a, 32b) creusées symétriquement dans la bride (2) de part et d'autre d'un plan médian (M) de la bride et de la tige, transversal à l'axe de pivotement (X) . 3. Clamping device according to claim 1 or 2, characterized in that the movable guide member (32) is constituted by a cam formed by two grooves (32a, 32b) symmetrically hollowed in the flange (2) from the side and on the other side of a median plane (M) of the flange and the rod, transverse to the pivot axis (X).
4. Dispositif de serrage suivant l'une quelconque des revendications précédentes combinée à la revendication 3, caractérisé en ce que chaque rainure (32a, 32b) présente un trajet dont des première et seconde extrémités (321, 322) sont respectivement relativement distante et relativement proche de l'axe de pivotement (X) , ce trajet se rapprochant continûment de l'axe de pivotement (X) depuis sa première extrémité (321) vers sa seconde extrémité (322) , et comprenant une portion de trajet rectiligne (320r) se terminant à la première extrémité (321) et une portion de trajet courbe (320c) , adjacente à la portion de trajet rectiligne (320r) et se terminant à la seconde extrémité (322) . 4. Clamping device according to any one of the preceding claims combined with claim 3, characterized in that each groove (32a, 32b) has a path of which first and second ends (321, 322) are respectively relatively distant and relatively close to the pivot axis (X), this path continuously approaching the pivot axis (X) from its first end (321) to its second end (322), and comprising a portion of rectilinear path (320r) ending at the first end (321) and a portion of curved path (320c), adjacent to the portion of straight path (320r) and ending at the second end (322).
5. Dispositif de serrage suivant l'une quelconque des revendications précédentes combinées à la revendication 3, caractérisé en ce que l'organe de guidage fixe (31) est constitué par une paire de tétons ou de galets (31a, 31b) fixés au corps (10) du vérin (1) et respectivement engagés dans les rainures (32a, 32b) formant la came. 5. Clamping device according to any one of the preceding claims combined with claim 3, characterized in that the fixed guide member (31) consists of a pair of pins or rollers (31a, 31b) fixed to the body (10) of the jack (1) and respectively engaged in the grooves (32a, 32b) forming the cam.
6. Dispositif de serrage suivant l'une quelconque des revendications précédentes, caractérisé en ce que l'élément d'appui mobile (42) est constitué par un talon d'appui (42) porté par la bride (2) et s ' étendant symétriquement de part et d'autre d'un plan médian (M) de la bride et de la tige, transversal à l'axe de pivotement (X), et en ce que l'élément d'appui fixe (41) est constitué par une surface d'appui (41) du corps (10) du vérin (1), sur laquelle le talon d'appui (42) s'appuie symétriquement par rapport audit plan médian (M) . 6. Clamping device according to any one of the preceding claims, characterized in that the movable support element (42) consists of a support heel (42) carried by the flange (2) and extending symmetrically on either side of a median plane (M) of the flange and the rod, transverse to the pivot axis (X), and in that the fixed support element (41) consists by a bearing surface (41) of the body (10) of the jack (1), on which the bearing heel (42) is supported symmetrically with respect to said median plane (M).
7. Dispositif de serrage suivant l'une quelconque des revendications précédentes, caractérisé en ce que le vérin (1) est un vérin à double effet comprenant des première et seconde chambres (101, 102) séparées par un piston (12) solidaire de la tige (11) , la bride (2) étant entraînée de sa position de relâchement vers sa position de serrage par admission de fluide sous pression dans la première chambre (101) du vérin (1) , et étant entraînée de sa position de serrage vers sa position de relâchement par admission de fluide sous pression dans la seconde chambre (102) du vérin (1) . 7. Clamping device according to any one of the preceding claims, characterized in that the jack (1) is a double-acting jack comprising first and second chambers (101, 102) separated by a piston (12) integral with the rod (11), the flange (2) being driven from its release position to its clamping position by admission of pressurized fluid into the first chamber (101) of the jack (1), and being driven from its clamping position towards its release position by admission of pressurized fluid into the second chamber (102) of the jack (1).
8. Dispositif de serrage suivant la revendication 7, caractérisé en ce que le vérin (1) est un vérin hydraulique . 8. Clamping device according to claim 7, characterized in that the cylinder (1) is a hydraulic cylinder.
9. Dispositif de serrage suivant l'une quelconque des revendications 7 et 8, caractérisé en ce que la tige (11) sort du vérin (1) du côté de sa première chambre (101) et en ce que l'organe de guidage fixe (31) et l'élément d'appui fixe (41) sont portés par une partie (100) du corps (10) du vérin qui est conformée en chape, la bride (2) étant guidée dans son plan médian (M) entre deux faces parallèles (100a, 100b) en vis-à-vis de cette partie (100) formant chape. 9. Clamping device according to any one of claims 7 and 8, characterized in that the rod (11) comes out of the jack (1) on the side of its first chamber (101) and in that the fixed guide member (31) and the fixed support element (41) are carried by a part (100) of the body (10) of the jack which is shaped as a yoke, the flange (2) being guided in its median plane (M) between two parallel faces (100a, 100b) facing this part (100) forming a yoke.
10. Dispositif de serrage suivant l'une quelconque des revendications 7 et 8, caractérisé en ce que la tige (11) sort du vérin (1) du côté de sa seconde chambre (102) et en ce que la bride (2) est conformée en chape et enserre le corps (10) du vérin (1) , qui la guide dans son plan médian (M) . 10. Clamping device according to any one of claims 7 and 8, characterized in that the rod (11) comes out of the jack (1) on the side of its second chamber (102) and in that the flange (2) is shaped like a yoke and encloses the body (10) of the jack (1), which guides it in its median plane (M).
11. Dispositif de serrage suivant l'une quelconque des revendications précédentes combinées à la revendication 5, caractérisé en ce que chaque téton ou galet (31a, 31b) est situé au-dessus d'un plan (T) transversal à la tige (11) contenant l'axe de pivotement (X) , suivant une direction correspondant au mouvement qu'effectue la tige (11) pour entraîner la bride (2) vers sa position de relâchement. 11. Clamping device according to any one of the preceding claims combined with claim 5, characterized in that each stud or roller (31a, 31b) is located above a plane (T) transverse to the rod (11 ) containing the pivot axis (X), in a direction corresponding to the movement made by the rod (11) to drive the flange (2) to its released position.
12. Dispositif de serrage suivant l'une quelconque des revendications précédentes, caractérisé en ce que la bride (2) effectue une rotation au moins égale à 90 degrés entre sa position de serrage et sa position de relâchement . 12. Clamping device according to any one of the preceding claims, characterized in that the flange (2) rotates at least equal to 90 degrees between its clamping position and its released position.
13. Procédé de commande du dispositif suivant l'une quelconque des revendications précédentes, caractérisé en ce qu'il comprend une opération consistant à mesurer la pression du fluide d'actionnement admis dans ce dispositif et à contrôler la position de la bride et / ou l'effort de bridage en vérifiant la valeur de la pression mesurée. 13. A method of controlling the device according to any one of the preceding claims, characterized in that it comprises an operation consisting in measuring the pressure of the actuating fluid admitted into this device and in controlling the position of the flange and / or the clamping force by checking the value of the pressure measured.
PCT/FR2004/003124 2003-12-04 2004-12-03 Quick clamping device and control method WO2005056241A1 (en)

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DE602004006647T DE602004006647T2 (en) 2003-12-04 2004-12-03 FAST TERMINATION DEVICE AND CONTROL PROCEDURE

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FR0314358A FR2863190B1 (en) 2003-12-04 2003-12-04 PRECISE CLAMPING DEVICE WITH QUICK ACTUATION

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DE602004006647D1 (en) 2007-07-05
FR2863190A1 (en) 2005-06-10
EP1697088A1 (en) 2006-09-06
FR2863190B1 (en) 2006-02-03
ATE362827T1 (en) 2007-06-15
ES2287803T3 (en) 2007-12-16
EP1697088B1 (en) 2007-05-23

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