EP0889844B1 - Device for handling an electric spindle of a high-speed machine tool - Google Patents

Device for handling an electric spindle of a high-speed machine tool Download PDF

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Publication number
EP0889844B1
EP0889844B1 EP97914401A EP97914401A EP0889844B1 EP 0889844 B1 EP0889844 B1 EP 0889844B1 EP 97914401 A EP97914401 A EP 97914401A EP 97914401 A EP97914401 A EP 97914401A EP 0889844 B1 EP0889844 B1 EP 0889844B1
Authority
EP
European Patent Office
Prior art keywords
spindle
electric spindle
electro
shoulder
support
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP97914401A
Other languages
German (de)
French (fr)
Other versions
EP0889844A1 (en
Inventor
André AZEMA
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Renault Automation Comau SA
Original Assignee
Renault Automation SA
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Filing date
Publication date
Application filed by Renault Automation SA filed Critical Renault Automation SA
Publication of EP0889844A1 publication Critical patent/EP0889844A1/en
Application granted granted Critical
Publication of EP0889844B1 publication Critical patent/EP0889844B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • B66C1/22—Rigid members, e.g. L-shaped members, with parts engaging the under surface of the loads; Crane hooks
    • B66C1/24—Single members engaging the loads from one side only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • B66C1/62—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means comprising article-engaging members of a shape complementary to that of the articles to be handled
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53113—Heat exchanger
    • Y10T29/53117—Heat exchanger including means to manipulate heat exchanger tube bundle
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T409/00—Gear cutting, milling, or planing
    • Y10T409/30—Milling
    • Y10T409/309352—Cutter spindle or spindle support
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T483/00—Tool changing
    • Y10T483/15—Tool changing with means to condition or adjust tool or tool support
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T483/00—Tool changing
    • Y10T483/17—Tool changing including machine tool or component
    • Y10T483/1733—Rotary spindle machine tool [e.g., milling machine, boring, machine, grinding machine, etc.]
    • Y10T483/1736—Tool having specific mounting or work treating feature
    • Y10T483/1738—Tool head

Definitions

  • the present invention relates to the field of machine tools and more particularly concerns adaptations allowing ensure the handling of a tool holder electro-spindle high-speed machining machine tool, especially its connection as well as its assembly and disassembly in best conditions.
  • High speed machining of parts by machine tool generally operates from a tool rotated by the axis motor of an electro-spindle installed in a flow itself mounted movable in translation along three axes X, Y and Z.
  • the powers required of the electro-spindles during a high speed machining are such that these are great dimensions and can reach masses of up to sixty kilograms.
  • the outer surface of these electro-spindles is conventionally formed of a cylinder provided with a shoulder located at the front of it which allows the attachment of the electro-spindle in the flowing, as well as a motor shaft opening or not, ensuring tool training.
  • These electro-spindles are of dimensions and large mass making operations difficult handling of these.
  • connection of an electro-spindle having the previously cited features is achieved by placing the back of it facing the flow in order to be able to connect and connect the cables inside the runner and necessary for the operation of the electro-spindle, at the sockets located at the rear of the latter. Maintaining in this position is essential for the connection of all cables. This holding operation is made difficult by the position of the vertical runner above the ground in front of which must be maintained the electro-spindle.
  • the invention relates more particularly to the mounting of the electro-spindle in the flow which is produced after the connection and which consists of a fitting of the rear body of the electro-spindle in a flow such as that already described by the Applicant in French patent application No. 9600912.
  • This flowing is notably formed by three re-entrant shoulders successive crowns, the first outer shoulder located at the entrance of the corridor defining an opening diameter greater than the opening diameter of the other two shoulders intermediate and interior. So, when mounting the electro-spindle, the rear body thereof comes into contact with the two intermediate and inner shoulders, these having sealing members so as to create a sealed chamber in which houses oil, or any other material intermediate allowing the damping of vibrations due to high speed machining.
  • Fixing the electro-spindle in the flowing is carried out by abutting on the shoulder intermediate of the flow, the rear face of the shoulder the electro-spindle, the latter being held in position by a flange fixed by means of screws passing through it and coming to be screwed on the first external shoulder of the runner.
  • the rear body of the electro-spindle becomes slippery due to its contact with the said oil or intermediate material, thus making the handling of the electro-spindle.
  • the receptacle consists of a carriage which, receiving said bundle of tubes, moves along a raceway consisting of two guide rails retained on said support housing by one of their ends, and this by means of a device attachment for securing said raceway audit support housing.
  • This hanging device for the bearing in the support housing is constituted by a means of locking device enclosing the thickness of an external collar to the support housing and pierced with transverse holes in which penetrate centering pins so as to position correctly with respect to the axis of the support housing, the axis of the raceway and therefore the axis of the carriage and bundle of tubes carried by the latter.
  • the hanging device is therefore preformed to be fixed on the outside of the support housing preformed for this purpose with a drawn collar peripherally around the accommodation.
  • the beam of tubes is also fitted with an external flange coming applied to the outer flange of the housing support, when the tube bundle is engaged in the housing support.
  • this set is remarkable in that the fixing element of the handling cradle is located in a state of use at the front of it and consists of a cylindrical tube cut according to a horizontal plane which adapts on its outside diameter to diameter of the first inner cylinder of the slide so as to be coaxial with it and having an inner diameter greater than diameter of the rear body of the electro-spindle.
  • the fixing device is integrated inside the support so that its inside diameter comes into the extension of the outer diameter of the electro-spindle which slides on said fixing member whereas in the patent above, the fixing device comes secure on the flange located outside the support housing to authorize the passage of the carriage including the platform is located at the outer cylinder of the tube bundle to ensure the extraction or engagement of the latter in the support housing under the effect of the movement of the carriage.
  • the tube bundle is moved by a carriage which carries it and which evolves over a path fixed to one end on the support housing at its flange exterior and in the invention, the fixing member is disposed at inside the support housing and constitutes the path of displacement of the electro-spindle itself.
  • This fixing member is fixed by means of two screws the passing through and screwing in holes drilled in the first outside re-entering shoulder of the slide thus using the support fixing the clamp holding the shoulder of the electro-spindle in abutment on the intermediate re-entrant shoulder of the runner.
  • the same holes drilled in the support of fixing may be used to fix the fixing member.
  • this fixing member is disposed relative to the receptacle of so that the horizontal electro-spindle on its support is coaxial with the fixing member.
  • the receptacle is provided on its median longitudinal axis an adjustment shim, on which the electro-spindle slides, allowing the horizontal movement of the electro-spindle towards the flowing while balancing the inclined electro-spindle due to the contact of its shoulder on the edges of the receptacle.
  • This adjustment shim located close to the fixing member has another advantage prevent the electro-spindle from coming into contact with the cylinder inside of the fastener when it slides from the receptacle towards the sinking, preventing possible scratches from create on the body of the electro-spindle by the friction of the body of the electro-spindle with the inner cylinder of said fixing member.
  • the adjustment shim is located on the receptacle so that when sliding of the electro-spindle towards the flow for purposes fitting, the shoulder of the electro-spindle comes to a stop on the wedge when the rear body of the electro-spindle is carried by the two inner and middle shoulders of the sliding, allowing disassembly and release of the cradle handling in order to complete the assembly phase by putting in stop the rear face of the electro-spindle shoulder on the intermediate shoulder of the slide and keep it in position by means of the flange fixed by screws to the threaded holes located on the first re-entering shoulder outside of the runner and released by removing the fixing member. This last operation is only possible if the fixing device is removed from the first outside re-entering shoulder of the runner.
  • the above receptacle is provided with an axial locking device for said electro-spindle in said receptacle preventing movement of translation of the electro-spindle on its axis.
  • This characteristic is particularly advantageous because it ensures the movement of the handling cradle without risk of slipping of the latter on its axis of translation inside said cradle.
  • the gripping has a hook located at the center of gravity of the handling cradle and located on one of its sides, so that leave one side unobstructed for installation and / or lateral removal of the electro-spindle in the cradle.
  • This hook has the advantage of allow the lifting of the handling cradle by a any means of lifting, from where it is stored forward flow without imbalance which could affect its fixation on the flowing in order to provide the manipulator with a work plan for the assembly or disassembly of the electro-spindle.
  • the electro-spindle can be placed in the receptacle before or after fixing the cradle to the slide.
  • the electro-spindle is placed on a cradle of handling, allowing by means of its gripping member, its lift by any means of lifting at the level of the runner located in height, and a horizontal position facing the flowing by means of its fixing member thus facilitating the electro-spindle connections and connections and a precise fitting in the flow due to the position horizontal of the electro-spindle and its coaxiality with the flow avoiding possible damage to the sealing members located on the two interior and intermediate shoulders of the slide.
  • This handling cradle will also have the advantage of allowing the disassembly of the electro-spindle without difficulty due to its contact with the oil because it defines a receptacle where is placed the electro-spindle without the manipulator having to carry it.
  • Figure 1 is a sectional view along a plane passing through the axis of the flow of the flow / electro-spindle assembly.
  • Figure 2 is a perspective view of the cradle of handling in which the electro-spindle drawn in dotted lines.
  • Figure 3 is a perspective view of the cradle of handling in front of the flow and carrying the electro-spindle.
  • Figure 4 is a sectional view along the vertical plane passing through the axis of the electro-spindle of the handling cradle carrying the electro-spindle.
  • FIGS 5a, 5b and 5c respectively illustrate the phases mounting of the electro-spindle in the flow.
  • FIG. 1 The drawing of Figure 1 is intended to illustrate the assembly of an electro-spindle referenced 100 as a whole in a flowing electro-spindle door referenced 200 as a whole, produced by cylindrical penetration in the direction of arrow A of said electro-spindle in the flow.
  • the flow 200 is formed of three successive re-entrant shoulders forming crowns, the first external shoulder 210 located at the entrance to the slide defining an opening diameter greater than the diameter opening of the other two intermediate shoulders 220 and interior 230.
  • the rear body of the electro-spindle 100 comes in contact with sealing members 221 and 231 located respectively on the intermediate re-entrant shoulders 220 and interior 230 to define a sealed chamber 300 filled oil.
  • the rear face of the shoulder 110 of the electro-spindle 100 abuts on the front face of the re-entrant shoulder intermediate 220, the electro-spindle 100 is then held in position in the flow 200 by means of a flange 211 which, coming press on the front face of the shoulder 110 of the electro-spindle 100, is fixed by screws 211a passing therethrough and screwed onto threaded holes 212 piercing right through the first shoulder returning 210.
  • the cradle of handling of the invention referenced 400 as a whole is consisting of a receptacle 500 on which the electro-spindle comes to rest 100, a hook 600 serving as a gripping member as well that of a fixing member 700 ensuring the maintenance of the cradle at flowing.
  • the above-mentioned fixing member 700 is formed of a cylindrical tube 710 cut along a horizontal plane located at below the axis of symmetry 120 of the electro-spindle.
  • This tube cylindrical cut 710 is dimensioned so that its outer diameter 720 fits the first inner cylinder 240 of the runner 200 so that the fixing member 700 is coaxial with the runner 200, and its internal diameter 730 is greater than the diameter of the rear body of the electro-spindle 100.
  • the aforesaid cut tube 710 has two holes 711 and 712 drilled in its thickness and whose axes are parallel to its axis.
  • the above cut tube 710 is fitted into the first inner cylinder 240 of the flow along the axis of the latter.
  • the two ports 711 and 712 are arranged in such a way that when the fixing member 700 is fitted into the flow 200, these are each coaxial with one of the 212 threaded holes drilled in the thickness of the shoulder 210 of the runner 200.
  • screws fix the fixing member 700 of the cradle 200 to the flow 200 by screwing into the threaded holes 212 allowing thus using the means for fixing the electro-spindle 100 as support for fixing the cradle 400 on the slide 200.
  • the receptacle 500 of the cradle 400 on which is deposited the electro-spindle 100 is formed from a U-shaped profile in which is housed a wedge 510 located inside thereof.
  • the electro-spindle 100 is thus in contact at the front at two points on the edges 520 and 530 of the U-shaped profile 500 by means of its shoulder 110 and in contact at the rear at a point on the wedge 510 directly through its rear body.
  • the edges 520 and 530 of the above U-shaped 500 are bevelled so avoid scratches, possible consequences of slipping the shoulder 110 of the electro-spindle 100 on the edges 520 and 530 of the U-profile and allow a better seat of the electro-spindle 100 in receptacle 500.
  • the aforesaid wedge 510 is located in the longitudinal plane of symmetry of the U-profile 500 and is of height such that it keeps the electro-spindle 100 in position horizontal facing the flow 200.
  • This wedge 510 thus allows a horizontal sliding of the electro-spindle 100 of the cradle 400 towards the flow 200 thus ensuring a precise fitting of the body back of electro-spindle 100 in both shoulders intermediate 220 and interior 230 of the flow 200 comprising the sealing elements 221 and 231, which require a great deal of precision in mounting the electro-spindle 100 in the flow 200.
  • the above wedge 510 allows, sliding without contact with the fixing member, prevents the rear body from the electro-spindle 100 risks of scratches which would not guarantee plus the tightness of the electro-spindle / sliding assembly and therefore vibration damping.
  • the above wedge of setting 510 is whole or only in its contacting part with the body of the electro-spindle 100 in "nylon" material so avoid any risk of scratching when sliding the electro-spindle on this one.
  • the gripping member 600 is consisting of a hook, one end of which 610 is located on a sides of receptacle 500 and the other end of which 620 is preformed to receive the fastening member 800 (see FIGS. 4a, 4b, 4c) a lifting device.
  • This hook 600 has the advantage of ensuring a socket on the cradle 400 to bring it by means of a lifting such as a hoist, at the height of the runner 200, to position it facing it to fix it, and lighten the load that is in sinking end avoiding bracing when assembly and / or disassembly operations.
  • the above hook 600 is advantageously placed at the center of gravity of the receptacle 500 for ensuring the balancing of the entire cradle 400 while rotating relative to the rotating member 800 on the hook of the lifting machine due to its weight, ensuring its positioning relative to the vertical and therefore relative to the flowing 200.
  • the aforesaid receptacle 500 is provided with an axial locking wedge 540 of said electro-spindle 100 in said receptacle 500 preventing the translational movement of the electro-spindle 100 on its axis 120.
  • This arrangement is particularly advantageous because it allows handling of the electro-spindle 100 to avoid any translation and therefore sliding of the electro-spindle 100 inside the cradle 400, which would have increased the risk of scratching as well as the risk of fall of the electro-spindle 100.
  • the blocking device consists of a groove 541 produced on said axial locking wedge 540 perpendicular to the axis 120 of said electro-spindle 100.
  • the width of said groove 541 can accommodate the above shoulder 110 of the electro-spindle 100 and its depth allows said shoulder 110 to remain in contact with the bevelled edges 520 and 530 of said receptacle 500.
  • the contact between the electro-spindle and the receptacle remains on three points and is not bothered by this axial locking wedge 540 whose function is to prevent the sliding of the body of the electro-spindle 100.
  • this wedge of axial locking 540 is located on the median longitudinal axis of the receptacle 500 so that when said shoulder 110 of the electro-spindle 100 is taken in said groove 541, the body back of the electro-spindle 100 either resting on said wedge setting 510 without being fitted into said support 200.
  • this blocking block increases the difficulty of the fitting operations and removal of the electro-spindle. Indeed, this additional obstacle obliges, during fitting, the manipulator to lift slightly the electro-spindle 100 at its shoulder 110 in order to disengage it from the blocking block 540 and then to reinstall it after a slight slide and then initiate a movement of sliding on the axis 120 for the purpose of fitting it to inside the sinker. This decomposition of movements fitting slows the installation of the electro-spindle but allows the operator to take all precautions necessary for its handling.
  • FIGS. 5a, 5b, and 5c illustrate the phases of mounting of an electro-spindle 100 in a flow 200 by means of the handling cradle 400 described above.
  • the electro-spindle 100 is placed in the cradle 400, the latter having been previously brought up to the level of the runner 200 and fixed by through its fastener 700 on the first external re-entering shoulder 210 of the runner 200 by means of screws as described above.
  • This cradle 400 allows you to create in front and at the level of the runner 200 a fixed horizontal work plan facilitating the connection of cables and wires inside and at the rear of the runner 200, and necessary for the operation of the electro-spindle 100.
  • the shoulder 110 of the electro-spindle 100 is at this moment engaged in the blocking block 540.
  • the wedge 510 is located on the receptacle 500 so that, when sliding (arrow A) of the electro-spindle 100 (produced after disengagement of the shoulder 110 of the electro-spindle 100 out of the groove 541 of the shim 540) towards the flow 200 and the fitting thereof, the shoulder 110 of the electro-spindle 100 abuts on the wedge 510 at moment when the rear body of the electro-spindle 100 is carried by the two internal shoulders 230 and intermediate 220 of the slide 200. During this abutment, the electro-spindle 100 is therefore carried by the two shoulders 230 and 220 and can be released from the cradle 400. The screws are then removed from the first shoulder entering outside 210 of the runner 200, the fixing member 700 is loosened from the runner 200 and the cradle 400 can be released from this the latter as shown by arrow B in FIG. 5c.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Turning (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
  • Automatic Assembly (AREA)

Description

La présente invention a trait au domaine des machines-outils et concerne plus particulièrement les adaptations permettant d'assurer la manutention d'une électro-broche porte-outil de machine-outil d'usinage à grande vitesse, notamment son raccordement ainsi que son montage et démontage dans les meilleures conditions.The present invention relates to the field of machine tools and more particularly concerns adaptations allowing ensure the handling of a tool holder electro-spindle high-speed machining machine tool, especially its connection as well as its assembly and disassembly in best conditions.

L'usinage à grande vitesse de pièces par une machine-outil s'opère en général à partir d'un outil entraíné en rotation par l'axe moteur d'une électro-broche installée dans un coulant lui-même monté mobile en translation selon trois axes X, Y et Z.High speed machining of parts by machine tool generally operates from a tool rotated by the axis motor of an electro-spindle installed in a flow itself mounted movable in translation along three axes X, Y and Z.

Une machine-outil comporte classiquement trois postes de travail principaux, à savoir :

  • un poste d'usinage proprement dit comportant l'outil entraíné en rotation par l'axe moteur de l'électro-broche et façonnant la pièce à usiner,
  • un poste d'entraínement situé en amont du poste d'usinage et constitué d'un ensemble d'organes assurant notamment les déplacements en translation suivant X,Y et Z du coulant de l'électro-broche ainsi que l'alimentation de l'électro-broche pour la rotation de son axe porte-outil,
  • et un poste de commande collaborant avec le poste d'entraínement et en fonction d'un programme d'instructions préétablies pour assumer les différentes phases d'usinage de ladite pièce.
A machine tool conventionally comprises three main work stations, namely:
  • a machining station proper comprising the tool driven in rotation by the motor axis of the electro-spindle and shaping the workpiece,
  • a training station located upstream of the machining station and consisting of a set of members ensuring in particular the translational displacements along X, Y and Z of the electro-spindle flow as well as the supply of the electro-spindle for the rotation of its tool-holder axis,
  • and a control station collaborating with the training station and according to a program of pre-established instructions to assume the different machining phases of said part.

Les puissances demandées aux électro-broches lors d'un usinage à grande vitesse sont telles que celles-ci sont de grandes dimensions et peuvent atteindre des masses allant jusqu'à soixante kilogrammes. La surface extérieure de ces électro-broches est formée classiquement d'un cylindre muni d'un épaulement situé à l'avant de celui-ci qui permet la fixation de l'électro-broche dans le coulant, ainsi que d'un arbre-moteur débouchant ou non, assurant l'entraínement des outils. Ces électro-broches sont de dimensions et de masse importantes rendant difficiles les opérations de manutention de celles-ci.The powers required of the electro-spindles during a high speed machining are such that these are great dimensions and can reach masses of up to sixty kilograms. The outer surface of these electro-spindles is conventionally formed of a cylinder provided with a shoulder located at the front of it which allows the attachment of the electro-spindle in the flowing, as well as a motor shaft opening or not, ensuring tool training. These electro-spindles are of dimensions and large mass making operations difficult handling of these.

En effet, le raccordement d'une électro-broche ayant les caractéristiques précédemment citées est réalisé en plaçant l'arrière de celle-ci face au coulant afin de pouvoir connecter et raccorder les câbles se trouvant à l'intérieur du coulant et nécessaires au fonctionnement de l'électro-broche, aux prises d'alimentation situées à l'arrière de cette dernière. Le maintien dans cette position est indispensable pour la connexion de tous les câbles. Cette opération de maintien est rendue difficile par la position du coulant en hauteur par rapport au sol en face duquel doit être maintenue l'électro-broche.Indeed, the connection of an electro-spindle having the previously cited features is achieved by placing the back of it facing the flow in order to be able to connect and connect the cables inside the runner and necessary for the operation of the electro-spindle, at the sockets located at the rear of the latter. Maintaining in this position is essential for the connection of all cables. This holding operation is made difficult by the position of the vertical runner above the ground in front of which must be maintained the electro-spindle.

L'invention concerne plus particulièrement le montage de l'électro-broche dans le coulant qui est réalisé après le raccordement et qui consiste en un emmanchement du corps arrière de l'électro-broche dans un coulant tel que celui déjà décrit par la demanderesse dans la demande de brevet français n° 9600912. Ce coulant est notamment formé de trois épaulements rentrants successifs formant couronnes, le premier épaulement extérieur situé à l'entrée du coulant délimitant un diamètre d'ouverture supérieur au diamètre d'ouverture des deux autres épaulements intermédiaire et intérieur. Ainsi, lors du montage de l'électro-broche, le corps arrière de celle-ci vient en contact avec les deux épaulements intermédiaire et intérieur, ceux-ci comportant des organes d'étanchéité de façon à créer une chambre étanche dans laquelle vient se loger de l'huile, ou tout autre matière intermédiaire permettant l'amortissement des vibrations dues à l'usinage à grande vitesse. La fixation de l'électro-broche dans le coulant est réalisée en mettant en butée sur l'épaulement intermédiaire du coulant, la face arrière de l'épaulement de l'électro-broche, ce dernier étant maintenu en position par une bride fixée au moyen de vis la traversant et venant se visser sur le premier épaulement extérieur du coulant.The invention relates more particularly to the mounting of the electro-spindle in the flow which is produced after the connection and which consists of a fitting of the rear body of the electro-spindle in a flow such as that already described by the Applicant in French patent application No. 9600912. This flowing is notably formed by three re-entrant shoulders successive crowns, the first outer shoulder located at the entrance of the corridor defining an opening diameter greater than the opening diameter of the other two shoulders intermediate and interior. So, when mounting the electro-spindle, the rear body thereof comes into contact with the two intermediate and inner shoulders, these having sealing members so as to create a sealed chamber in which houses oil, or any other material intermediate allowing the damping of vibrations due to high speed machining. Fixing the electro-spindle in the flowing is carried out by abutting on the shoulder intermediate of the flow, the rear face of the shoulder the electro-spindle, the latter being held in position by a flange fixed by means of screws passing through it and coming to be screwed on the first external shoulder of the runner.

L'opération d'emmanchement du susdit corps arrière dans le coulant est délicate car elle nécessite une grande précision pour éviter tout dommage aux susdits organes d'étanchéité qui auraient pour conséquence des risques de fuite et donc un rendement plus faible de l'amortissement de vibrations, et la possibilité d'accident du fait de la présence des connexions électriques nécessaires au fonctionnement de l'électro-broche. Cette précision est difficile à atteindre en raison du poids et du volume de l'électro-broche qui doit être maintenue à hauteur et en face du coulant pendant les opérations d'intervention de l'équipe d'entretien .The fitting operation of the aforesaid rear body in the flowing is delicate because it requires great precision to avoid any damage to the aforesaid sealing members which consequence of the risk of leakage and therefore a higher yield low vibration damping, and the possibility of accident due to the presence of the electrical connections necessary for electro-spindle operation. This precision is difficult to due to the weight and volume of the electro-spindle which must be kept at height and in front of the flow during maintenance team intervention operations.

En outre, lors de l'opération de démontage, le corps arrière de l'électro-broche devient glissant du fait de son contact avec la susdite huile ou matière intermédiaire, rendant ainsi dangereuse la manutention de l'électro-broche.In addition, during the disassembly operation, the rear body of the electro-spindle becomes slippery due to its contact with the said oil or intermediate material, thus making the handling of the electro-spindle.

Le brevet américain n° 3 239 077 déposé au nom de 0. C. Huff et Norman C. Stanley décrit un dispositif de manutention d'un faisceau de tubes d'échangeur de chaleur. Ce dispositif se compose :

  • d'un réceptacle accueillant le faisceau de tubes,
  • d'un chariot de mise en mouvement du faisceau de tubes pour l'introduire ou l'extraire de son logement-support,
  • d'un organe de fixation ou du moins de positionnement dudit réceptacle sur ledit logement-support,
  • et de points de préhension d'un câble permettant le levage dudit réceptacle par une grue ou par tout autre moyen de levage.
US Patent No. 3,239,077 filed in the name of 0. C. Huff and Norman C. Stanley describes a device for handling a bundle of heat exchanger tubes. This system consists of:
  • a receptacle accommodating the bundle of tubes,
  • a carriage for setting in motion the tube bundle to introduce or extract it from its support housing,
  • a member for fixing or at least positioning said receptacle on said support-housing,
  • and gripping points of a cable allowing the lifting of said receptacle by a crane or by any other lifting means.

Le réceptacle est constitué d'un chariot qui, recevant ledit faisceau de tubes, se déplace le long d'un chemin de roulement constitué de deux rails de guidage retenus audit logement-support par une de leurs extrémités, et ce au moyen d'un dispositif d'accrochage permettant de solidariser ledit chemin de roulement audit logement-support. Ce dispositif d'accrochage du chemin de roulement au logement-support est constitué par un moyen de verrouillage venant enserrer l'épaisseur d'une collerette extérieure au logement-support et percée de trous transversaux dans lesquels pénètrent des tourillons de centrage de façon à positionner correctement par rapport à l'axe du logement-support, l'axe du chemin de roulement et par conséquent l'axe du chariot et du faisceau de tubes porté par ce dernier . Le dispositif d'accrochage est donc préformé pour venir se fixer sur l'extérieur du logement-support préformé à cet effet d'une collerette dessinée périphériquement autour du logement. Il est à noter que le faisceau de tubes est également aménagé d'une collerette extérieure venant en applique sur la collerette extérieure du support-logement, lorsque le faisceau de tubes est engagé dans le support-logement.The receptacle consists of a carriage which, receiving said bundle of tubes, moves along a raceway consisting of two guide rails retained on said support housing by one of their ends, and this by means of a device attachment for securing said raceway audit support housing. This hanging device for the bearing in the support housing is constituted by a means of locking device enclosing the thickness of an external collar to the support housing and pierced with transverse holes in which penetrate centering pins so as to position correctly with respect to the axis of the support housing, the axis of the raceway and therefore the axis of the carriage and bundle of tubes carried by the latter. The hanging device is therefore preformed to be fixed on the outside of the support housing preformed for this purpose with a drawn collar peripherally around the accommodation. Note that the beam of tubes is also fitted with an external flange coming applied to the outer flange of the housing support, when the tube bundle is engaged in the housing support.

Partant de cet état de fait, la demanderesse a imaginé un concept original d'un ensemble constitué d'un dispositif de manutention, d'une électro-broche cylindrique porte-outil et d'un support cylindrique du type coulant d'une machine-outil d'usinage à grande vitesse, permettant d'obvier aux inconvénients précités pour le raccordement ainsi que pour le montage et le démontage de l'électro-broche dans le coulant en créant à hauteur et face à ce dernier un plan de travail fixe pour le raccordement de l'électro-broche et les opérations de manutention de celle-ci tout en assurant un emmanchement précis de l'électro-broche dans le coulant. On the basis of this fact, the plaintiff imagined a original concept of a set consisting of a handling, a cylindrical electro-spindle tool holder and a cylindrical support of the sliding type of a machine tool high speed, allowing to overcome the aforementioned drawbacks for the connection as well as for the assembly and disassembly of the electro-spindle in the flow by creating at height and facing this last a fixed work plan for the connection of the electro-spindle and handling operations thereof while ensuring precise fitting of the electro-spindle into the flow.

Pour y parvenir, l'ensemble de l'invention est du type où le dispositif de manutention d'une électro-broche cylindrique porte-outil dans un support cylindrique du type coulant d'une machine-outil d'usinage à grande vitesse, est constitué par un berceau de manutention formé par l'association :

  • d'un réceptacle dans lequel se place l'électro-broche,
  • d'un organe de préhension assurant le levage dudit berceau de manutention,
  • et d'un organe de fixation du berceau au coulant.
To achieve this, the assembly of the invention is of the type where the device for handling a cylindrical electro-spindle tool holder in a cylindrical support of the flowing type of a machine tool for high speed machining, is consisting of a handling cradle formed by the association:
  • a receptacle in which the electro-spindle is placed,
  • a gripping member ensuring the lifting of said handling cradle,
  • and a member for fixing the cradle to the slide.

Selon l'invention, cet ensemble est remarquable en ce que l'organe de fixation du berceau de manutention est situé en état d'utilisation à l'avant de celui-ci et est constitué d'un tube cylindrique coupé selon un plan horizontal qui s'adapte sur son diamètre extérieur au diamètre du premier cylindre intérieur du coulant de façon à être coaxial avec celui-ci et ayant un diamètre intérieur supérieur au diamètre du corps arrière de l'électro-broche. Ainsi, le dispositif de fixation vient s'intégrer à l'intérieur du support de façon à ce que son diamètre intérieur vienne dans le prolongement du diamètre extérieur de l'électro-broche qui coulisse sur ledit organe de fixation alors que dans le brevet américain ci-dessus, le dispositif de fixation vient se solidariser sur la collerette située à l'extérieur du logement-support pour autoriser le passage du chariot dont la plate-forme est située au niveau du cylindre extérieur du faisceau de tubes pour assurer l'extraction ou l'engagement de ce dernier dans le logement-support sous l'effet des déplacements du chariot. Dans le brevet américain, le faisceau de tubes est déplacé par un chariot qui le porte et qui évolue au-dessus d'un chemin fixé à une extrémité sur le logement-support au niveau de sa collerette extérieure et dans l'invention, l'organe de fixation est disposé à l'intérieur du logement-support et constitue le chemin de déplacement de l'électro-broche elle-même. Ceci a pour avantage de positionner le berceau par rapport au coulant par un centrage cylindrique en permettant à l'organe de fixation de former coulisse avec le coulant assurant ainsi une coaxialité entre le coulant et l'organe de fixation. Un autre avantage de cette disposition est la possibilité de faire coulisser l'électro-broche dans le cylindre intérieur de l'organe de fixation du fait de son diamètre plus important.According to the invention, this set is remarkable in that the fixing element of the handling cradle is located in a state of use at the front of it and consists of a cylindrical tube cut according to a horizontal plane which adapts on its outside diameter to diameter of the first inner cylinder of the slide so as to be coaxial with it and having an inner diameter greater than diameter of the rear body of the electro-spindle. So the fixing device is integrated inside the support so that its inside diameter comes into the extension of the outer diameter of the electro-spindle which slides on said fixing member whereas in the patent above, the fixing device comes secure on the flange located outside the support housing to authorize the passage of the carriage including the platform is located at the outer cylinder of the tube bundle to ensure the extraction or engagement of the latter in the support housing under the effect of the movement of the carriage. In the American patent, the tube bundle is moved by a carriage which carries it and which evolves over a path fixed to one end on the support housing at its flange exterior and in the invention, the fixing member is disposed at inside the support housing and constitutes the path of displacement of the electro-spindle itself. This has advantage of positioning the cradle in relation to the flow by a cylindrical centering allowing the fixing member to form slides with the slide thus ensuring coaxiality between the flowing and the fixing member. Another benefit of this provision is the possibility of sliding the electro-spindle in the inner cylinder of the fixing member due to its diameter most important.

L'association elle-même a de nombreux avantages et parmi-ceux-ci :

  • placer l'électro-broche sur un support stable,
  • permettre à l'électro-broche de glisser du berceau vers le coulant,
  • assurer un maintien en position de l'électro-broche à hauteur et en face du coulant,
  • permettre les opérations de pose et de dépose de l'électro-broche vers le coulant,
  • assurer un plan de travail stable pour les opérations d'intervention sur l'électro-broche.
The association itself has many advantages and among these:
  • place the electro-spindle on a stable support,
  • allow the electro-spindle to slide from the cradle to the slide,
  • maintain the electro-spindle in position at height and opposite the slide,
  • allow the installation and removal operations of the electro-spindle towards the flow,
  • ensure a stable work plan for intervention operations on the electro-spindle.

Cet organe de fixation se fixe au moyen de deux vis le traversant et se vissant dans des trous percés dans le premier épaulement rentrant extérieur du coulant utilisant ainsi le support de fixation de la bride maintenant en butée l'épaulement de l'électro-broche sur l'épaulement rentrant intermédiaire du coulant. Avantageusement, les mêmes trous percés dans le support de fixation pourront être utilisés pour fixer l'organe de fixation. En outre, cet organe de fixation est disposé par rapport au réceptacle de façon à ce que l'électro-broche horizontale sur son support soit coaxiale avec l'organe de fixation.This fixing member is fixed by means of two screws the passing through and screwing in holes drilled in the first outside re-entering shoulder of the slide thus using the support fixing the clamp holding the shoulder of the electro-spindle in abutment on the intermediate re-entrant shoulder of the runner. Advantageously, the same holes drilled in the support of fixing may be used to fix the fixing member. In further, this fixing member is disposed relative to the receptacle of so that the horizontal electro-spindle on its support is coaxial with the fixing member.

Suivant une caractéristique particulièrement avantageuse de l'invention, le réceptacle est muni sur son axe longitudinal médian d'une cale de réglage, sur laquelle glisse l'électro-broche, permettant le mouvement horizontal de l'électro-broche vers le coulant en équilibrant l'électro-broche inclinée du fait du contact de son épaulement sur les bords du réceptacle. Cette cale de réglage située à proximité de l'organe de fixation a pour autre avantage d'éviter que l'électro-broche ne soit en contact avec le cylindre intérieur de l'organe de fixation lors du glissement de celle-ci du réceptacle vers le coulant, empêchant d'éventuelles rayures de se créer sur le corps de l'électro-broche par le frottement du corps de l'électro-broche avec le cylindre intérieur dudit organe de fixation. En outre, par un mode particulièrement avantageux de réalisation, la cale de réglage est située sur le réceptacle de façon à ce que lors du glissement de l'électro-broche vers le coulant à des fins d'emmanchement, l'épaulement de l'électro-broche vienne en butée sur la cale au moment où le corps arrière de l'électro-broche est porté par les deux épaulements intérieur et intermédiaire du coulant, permettant ainsi le démontage et le dégagement du berceau de manutention afin de terminer la phase de montage en mettant en butée la face arrière de l'épaulement de l'électro-broche sur l'épaulement intermédiaire du coulant et de la maintenir en position au moyen de la bride se fixant par des vis aux trous filetés situés sur le premier épaulement rentrant extérieur du coulant et libérés par l'enlèvement de l'organe de fixation. Cette dernière opération n'est possible que si l'organe de fixation est démonté du premier épaulement rentrant extérieur du coulant.According to a particularly advantageous characteristic of the invention, the receptacle is provided on its median longitudinal axis an adjustment shim, on which the electro-spindle slides, allowing the horizontal movement of the electro-spindle towards the flowing while balancing the inclined electro-spindle due to the contact of its shoulder on the edges of the receptacle. This adjustment shim located close to the fixing member has another advantage prevent the electro-spindle from coming into contact with the cylinder inside of the fastener when it slides from the receptacle towards the sinking, preventing possible scratches from create on the body of the electro-spindle by the friction of the body of the electro-spindle with the inner cylinder of said fixing member. In addition, by a particularly advantageous embodiment, the adjustment shim is located on the receptacle so that when sliding of the electro-spindle towards the flow for purposes fitting, the shoulder of the electro-spindle comes to a stop on the wedge when the rear body of the electro-spindle is carried by the two inner and middle shoulders of the sliding, allowing disassembly and release of the cradle handling in order to complete the assembly phase by putting in stop the rear face of the electro-spindle shoulder on the intermediate shoulder of the slide and keep it in position by means of the flange fixed by screws to the threaded holes located on the first re-entering shoulder outside of the runner and released by removing the fixing member. This last operation is only possible if the fixing device is removed from the first outside re-entering shoulder of the runner.

Selon une autre caractéristique de l'invention, le susdit réceptacle est muni d'un dispositif de blocage axial de ladite électro-broche dans ledit réceptacle empêchant le mouvement de translation de l'électro-broche sur son axe. Cette caractéristique est particulièrement avantageuse car elle permet d'assurer le déplacement du berceau de manutention sans risque de glissement de celle-ci sur son axe de translation à l'intérieur dudit berceau.According to another characteristic of the invention, the above receptacle is provided with an axial locking device for said electro-spindle in said receptacle preventing movement of translation of the electro-spindle on its axis. This characteristic is particularly advantageous because it ensures the movement of the handling cradle without risk of slipping of the latter on its axis of translation inside said cradle.

Selon une autre caractéristique de l'invention, l'organe de préhension comporte un crochet situé au niveau du centre de gravité du berceau de manutention et situé sur l'un de ses côtés, de façon à laisser un côté sans obstacle pour la pose et/ou la dépose latérale de l'électro-broche dans le berceau. Ce crochet a pour avantage de permettre la sustentation du berceau de manutention par un quelconque moyen de levage, de l'endroit où il est stocké vers l'avant du coulant sans déséquilibre pouvant nuire à sa fixation sur le coulant afin d'assurer au manipulateur un plan de travail pour le montage ou pour le démontage de l'électro-broche. Pour l'opération de montage, l'électro-broche pourra être posée dans le réceptacle avant ou après la fixation du berceau au coulant.According to another characteristic of the invention, the gripping has a hook located at the center of gravity of the handling cradle and located on one of its sides, so that leave one side unobstructed for installation and / or lateral removal of the electro-spindle in the cradle. This hook has the advantage of allow the lifting of the handling cradle by a any means of lifting, from where it is stored forward flow without imbalance which could affect its fixation on the flowing in order to provide the manipulator with a work plan for the assembly or disassembly of the electro-spindle. For the operation mounting, the electro-spindle can be placed in the receptacle before or after fixing the cradle to the slide.

Ainsi, l'électro-broche est placée sur un berceau de manutention, permettant au moyen de son organe de préhension, sa sustentation par un quelconque moyen de levage au niveau du coulant situé en hauteur, et un maintien en position horizontale face au coulant au moyen de son organe de fixation facilitant ainsi les connexions et raccordements de l'électro-broche et un emmanchement précis dans le coulant du fait de la position horizontale de l'électro-broche et de sa coaxialité avec le coulant évitant d'éventuels dommages aux organes d'étanchéité situés sur les deux épaulements intérieur et intermédiaire du coulant. Ce berceau de manutention aura aussi pour avantage de permettre, le démontage de l'électro-broche sans difficulté due à son contact avec l'huile du fait qu'il définisse un réceptacle où vient se placer l'électro-broche sans que le manipulateur n'ait à porter celle-ci.Thus, the electro-spindle is placed on a cradle of handling, allowing by means of its gripping member, its lift by any means of lifting at the level of the runner located in height, and a horizontal position facing the flowing by means of its fixing member thus facilitating the electro-spindle connections and connections and a precise fitting in the flow due to the position horizontal of the electro-spindle and its coaxiality with the flow avoiding possible damage to the sealing members located on the two interior and intermediate shoulders of the slide. This handling cradle will also have the advantage of allowing the disassembly of the electro-spindle without difficulty due to its contact with the oil because it defines a receptacle where is placed the electro-spindle without the manipulator having to carry it.

Bien que les aspects principaux de l'invention considérés comme nouveaux aient été exprimés ci-dessus, de plus amples détails concernant un mode de réalisation préférée d'un ensemble de manutention d'une électro-broche de machine-outil d'usinage à grande vitesse respectant les concepts fondamentaux de l'invention, seront mieux compris en se référant à la description ci-après et aux dessins l'accompagnant illustrant ce mode de réalisation.Although the main aspects of the invention considered as new have been expressed above, further details of a preferred embodiment of a set of handling of an electro-spindle of a machine tool high speed respecting the fundamental concepts of the invention, will be better understood by referring to the description below and to accompanying drawings illustrating this embodiment.

Sur ces dessins : In these drawings:

La figure 1 est une vue en coupe suivant un plan passant par l'axe du coulant de l'assemblage coulant/électro- broche.Figure 1 is a sectional view along a plane passing through the axis of the flow of the flow / electro-spindle assembly.

La figure 2 est une vue en perspective du berceau de manutention dans lequel est placée l'électro-broche dessinée en traits pointillés.Figure 2 is a perspective view of the cradle of handling in which the electro-spindle drawn in dotted lines.

La figure 3 est une vue en perspective du berceau de manutention face au coulant et portant l'électro-broche.Figure 3 is a perspective view of the cradle of handling in front of the flow and carrying the electro-spindle.

La figure 4 est une vue en coupe suivant le plan vertical passant par l'axe de l'éléctro-broche du berceau de manutention portant l'électro-broche.Figure 4 is a sectional view along the vertical plane passing through the axis of the electro-spindle of the handling cradle carrying the electro-spindle.

Les figures 5a, 5b et 5c illustrent respectivement les phases de montage de l'électro-broche dans le coulant.Figures 5a, 5b and 5c respectively illustrate the phases mounting of the electro-spindle in the flow.

Le dessin de la figure 1, a pour objet d'illustrer le montage d'une électro-broche référencée 100 dans son ensemble dans un coulant porte électro-broche référencé 200 dans son ensemble, réalisé par pénétration cylindrique dans le sens de la flèche A de ladite électro-broche dans le coulant. Le coulant 200 est formé de trois épaulements rentrants successifs formant couronnes, le premier épaulement extérieur 210 situé à l'entrée du coulant délimitant un diamètre d'ouverture supérieur au diamètre d'ouverture des deux autres épaulements intermédiaire 220 et intérieur 230. Le corps arrière de l'électro-broche 100 vient en contact avec des organes d'étanchéité 221 et 231 situés respectivement sur les épaulements rentrants intermédiaire 220 et intérieur 230 pour délimiter une chambre étanche 300 remplie d'huile. La face arrière de l'épaulement 110 de l'électro-broche 100 vient en butée sur la face avant de l'épaulement rentrant intermédiaire 220, l'électro-broche 100 est alors maintenue en position dans le coulant 200 au moyen d'une bride 211 qui, venant appuyer sur la face avant de l'épaulement 110 de l'électro-broche 100, est fixée par des vis 211a la traversant et se vissant sur des trous filetés 212 perçant de part en part le premier épaulement rentrant 210.The drawing of Figure 1 is intended to illustrate the assembly of an electro-spindle referenced 100 as a whole in a flowing electro-spindle door referenced 200 as a whole, produced by cylindrical penetration in the direction of arrow A of said electro-spindle in the flow. The flow 200 is formed of three successive re-entrant shoulders forming crowns, the first external shoulder 210 located at the entrance to the slide defining an opening diameter greater than the diameter opening of the other two intermediate shoulders 220 and interior 230. The rear body of the electro-spindle 100 comes in contact with sealing members 221 and 231 located respectively on the intermediate re-entrant shoulders 220 and interior 230 to define a sealed chamber 300 filled oil. The rear face of the shoulder 110 of the electro-spindle 100 abuts on the front face of the re-entrant shoulder intermediate 220, the electro-spindle 100 is then held in position in the flow 200 by means of a flange 211 which, coming press on the front face of the shoulder 110 of the electro-spindle 100, is fixed by screws 211a passing therethrough and screwed onto threaded holes 212 piercing right through the first shoulder returning 210.

Comme le montre le dessin de la figure 2, le berceau de manutention de l'invention référencé 400 dans son ensemble est constitué d'un réceptacle 500 sur lequel vient se poser l'électro-broche 100, d'un crochet 600 servant d'organe de préhension ainsi que d'un organe de fixation 700 assurant le maintien du berceau au coulant.As shown in the drawing in Figure 2, the cradle of handling of the invention referenced 400 as a whole is consisting of a receptacle 500 on which the electro-spindle comes to rest 100, a hook 600 serving as a gripping member as well that of a fixing member 700 ensuring the maintenance of the cradle at flowing.

Suivant l'invention, le susdit organe de fixation 700 est formé d'un tube cylindrique 710 coupé suivant un plan horizontal situé en dessous de l'axe de symétrie 120 de l'électro-broche. Ce tube cylindrique coupé 710 est dimensionné de manière à ce que son diamètre extérieur 720 s'adapte au premier cylindre intérieur 240 du coulant 200 de façon à ce que l'organe de fixation 700 soit coaxial avec le coulant 200, et que son diamètre intérieur 730 est supérieur au diamètre du corps arrière de l'électro-broche 100. Le susdit tube coupé 710 comporte deux orifices 711 et 712 percés dans son épaisseur et dont les axes sont parallèles à son axe. Ainsi, lors de la fixation du berceau 400 au coulant 200, le susdit tube coupé 710 est emmanché dans le premier cylindre intérieur 240 du coulant selon l'axe de ce dernier. Les deux orifices 711 et 712 sont disposés de telle façon que lorsque l'organe de fixation 700 est emmanché dans le coulant 200, ceux-ci soient chacun coaxiaux avec un des trous filetés 212 percés dans l'épaisseur de l'épaulement 210 du coulant 200. Par ces orifices, des vis (non représentées) viennent fixer l'organe de fixation 700 du berceau 200 au coulant 200 en se vissant dans les trous filetés 212 permettant ainsi d'utiliser le moyen de fixation de l'électro-broche 100 comme support de fixation du berceau 400 sur le coulant 200.According to the invention, the above-mentioned fixing member 700 is formed of a cylindrical tube 710 cut along a horizontal plane located at below the axis of symmetry 120 of the electro-spindle. This tube cylindrical cut 710 is dimensioned so that its outer diameter 720 fits the first inner cylinder 240 of the runner 200 so that the fixing member 700 is coaxial with the runner 200, and its internal diameter 730 is greater than the diameter of the rear body of the electro-spindle 100. The aforesaid cut tube 710 has two holes 711 and 712 drilled in its thickness and whose axes are parallel to its axis. Thus, when attaching the cradle 400 to the runner 200, the above cut tube 710 is fitted into the first inner cylinder 240 of the flow along the axis of the latter. The two ports 711 and 712 are arranged in such a way that when the fixing member 700 is fitted into the flow 200, these are each coaxial with one of the 212 threaded holes drilled in the thickness of the shoulder 210 of the runner 200. By these orifices, screws (not shown) fix the fixing member 700 of the cradle 200 to the flow 200 by screwing into the threaded holes 212 allowing thus using the means for fixing the electro-spindle 100 as support for fixing the cradle 400 on the slide 200.

Le réceptacle 500 du berceau 400 sur lequel vient se déposer l'électro-broche 100 est formé d'un profilé en forme de U dans lequel est logée une cale 510 située à l'intérieur de celui-ci. L'électro-broche 100 est ainsi en contact à l'avant en deux points sur les bords 520 et 530 du profilé en U 500 par l'intermédiaire de son épaulement 110 et en contact à l'arrière en un point sur la cale 510 directement par l'intermédiaire de son corps arrière. Selon une caractéristique particulièrement avantageuse de l'invention, les bords 520 et 530 du susdit profilé en U 500 sont biseautés afin d'éviter les rayures, conséquences possibles du glissement de l'épaulement 110 de l'électro-broche 100 sur les bords 520 et 530 du profilé en U et de permettre une meilleure assise de l'électro-broche 100 dans le réceptacle 500. Selon une autre caractéristique avantageuse de l'invention, la susdite cale 510 est située dans le plan de symétrie longitudinal du profilé en U 500 et est d'une hauteur telle qu'elle maintient l'électro-broche 100 en position horizontale face au coulant 200. Cette cale 510 permet ainsi un glissement horizontal de l'électro-broche 100 du berceau 400 vers le coulant 200 assurant ainsi un emmanchement précis du corps arrière de l'électro-broche 100 dans les deux épaulements intermédiaire 220 et intérieur 230 du coulant 200 comportant les éléments d'étanchéité 221 et 231, lesquels nécessitent une grande précision dans le montage de l'électro-broche 100 dans le coulant 200. En outre, la susdite cale 510 permet, en glissant sans contact avec l'organe de fixation, permet d'éviter au corps arrière de l'électro-broche 100 des risques de rayures qui ne garantiraient plus l'étanchéité de l'assemblage électro-broche/coulant et donc l'amortissement des vibrations. D'autre part, la susdite cale de réglage 510 est tout entière ou seulement dans sa partie en contact avec le corps de l'électro-broche 100 en matériau "nylon" afin d'éviter tout risque de rayure lors du glissement de l'électro-broche sur celle-ci.The receptacle 500 of the cradle 400 on which is deposited the electro-spindle 100 is formed from a U-shaped profile in which is housed a wedge 510 located inside thereof. The electro-spindle 100 is thus in contact at the front at two points on the edges 520 and 530 of the U-shaped profile 500 by means of its shoulder 110 and in contact at the rear at a point on the wedge 510 directly through its rear body. According to one particularly advantageous characteristic of the invention, the edges 520 and 530 of the above U-shaped 500 are bevelled so avoid scratches, possible consequences of slipping the shoulder 110 of the electro-spindle 100 on the edges 520 and 530 of the U-profile and allow a better seat of the electro-spindle 100 in receptacle 500. According to another characteristic advantageous of the invention, the aforesaid wedge 510 is located in the longitudinal plane of symmetry of the U-profile 500 and is of height such that it keeps the electro-spindle 100 in position horizontal facing the flow 200. This wedge 510 thus allows a horizontal sliding of the electro-spindle 100 of the cradle 400 towards the flow 200 thus ensuring a precise fitting of the body back of electro-spindle 100 in both shoulders intermediate 220 and interior 230 of the flow 200 comprising the sealing elements 221 and 231, which require a great deal of precision in mounting the electro-spindle 100 in the flow 200. In addition, the above wedge 510 allows, sliding without contact with the fixing member, prevents the rear body from the electro-spindle 100 risks of scratches which would not guarantee plus the tightness of the electro-spindle / sliding assembly and therefore vibration damping. On the other hand, the above wedge of setting 510 is whole or only in its contacting part with the body of the electro-spindle 100 in "nylon" material so avoid any risk of scratching when sliding the electro-spindle on this one.

Comme illustré sur la figure 3, l'organe de préhension 600 est constitué par un crochet dont une extrémité 610 est située sur un des côtés du réceptacle 500 et dont l'autre extrémité 620 est préformée pour recevoir l'organe d'accrochage 800 (cf figures 4a, 4b, 4c) d'un engin de levage. Ce crochet 600 a pour avantage d'assurer une prise sur le berceau 400 pour l'amener au moyen d'un engin de levage tel qu'un palan, à la hauteur du coulant 200, de le positionner face à celui-ci pour le fixer, et d'alléger la charge qui se trouve en bout de coulant en évitant l'arc-boutement au moment des opérations de montage et/ou de démontage. Le susdit crochet 600 est avantageusement disposé au niveau du centre de gravité du réceptacle 500 permettant d'assurer l'équilibrage de l'ensemble du berceau 400 en étant en rotation par rapport à l'organe de rotation 800 au crochet de l'engin de levage du fait de son poids, assurant son positionnement par rapport à la verticale et donc par rapport au coulant 200.As illustrated in FIG. 3, the gripping member 600 is consisting of a hook, one end of which 610 is located on a sides of receptacle 500 and the other end of which 620 is preformed to receive the fastening member 800 (see FIGS. 4a, 4b, 4c) a lifting device. This hook 600 has the advantage of ensuring a socket on the cradle 400 to bring it by means of a lifting such as a hoist, at the height of the runner 200, to position it facing it to fix it, and lighten the load that is in sinking end avoiding bracing when assembly and / or disassembly operations. The above hook 600 is advantageously placed at the center of gravity of the receptacle 500 for ensuring the balancing of the entire cradle 400 while rotating relative to the rotating member 800 on the hook of the lifting machine due to its weight, ensuring its positioning relative to the vertical and therefore relative to the flowing 200.

Tel qu'illustré sur la figure 4, le susdit réceptacle 500 est muni d'une cale de blocage axial 540 de ladite électro-broche 100 dans ledit réceptacle 500 empêchant le mouvement de translation de l'électro-broche 100 sur son axe 120. Cette disposition est particulièrement avantageuse car elle permet lors de la manutention de l'électro-broche 100 d'éviter toute translation et donc glissement de l'électro-broche 100 à l'intérieur du berceau 400, ce qui aurait accentué le risque de rayure ainsi que le risque de chute de l'électro-broche 100.As illustrated in FIG. 4, the aforesaid receptacle 500 is provided with an axial locking wedge 540 of said electro-spindle 100 in said receptacle 500 preventing the translational movement of the electro-spindle 100 on its axis 120. This arrangement is particularly advantageous because it allows handling of the electro-spindle 100 to avoid any translation and therefore sliding of the electro-spindle 100 inside the cradle 400, which would have increased the risk of scratching as well as the risk of fall of the electro-spindle 100.

Selon un mode de réalisation préférée de l'invention, le dispositif de blocage est constitué par une rainure 541 réalisée sur ladite cale de blocage axial 540 perpendiculairement à l'axe 120 de ladite électro-broche 100. Avantageusement et comme illustré, la largeur de ladite rainure 541 permet d'accueillir le susdit épaulement 110 de l'éléctro-broche 100 et sa profondeur permet audit épaulement 110 de rester en contact avec les bords biseautés 520 et 530 dudit réceptacle 500. Ainsi, le contact entre l'électro-broche et le réceptacle reste sur trois points et n'est pas gêné par cette cale de blocage axial 540 dont la fonction est d'empêcher le glissement du corps de l'électro-broche 100. En outre, cette cale de blocage axial 540 est située sur l'axe longitudinal médian du réceptacle 500 de façon à ce que lorsque ledit épaulement 110 de l'électro-broche 100 est pris dans ladite rainure 541, le corps arrière de l'électro-broche 100 soit en appui sur ladite cale de réglage 510 sans être emmanché dans ledit support 200.According to a preferred embodiment of the invention, the blocking device consists of a groove 541 produced on said axial locking wedge 540 perpendicular to the axis 120 of said electro-spindle 100. Advantageously and as illustrated, the width of said groove 541 can accommodate the above shoulder 110 of the electro-spindle 100 and its depth allows said shoulder 110 to remain in contact with the bevelled edges 520 and 530 of said receptacle 500. Thus, the contact between the electro-spindle and the receptacle remains on three points and is not bothered by this axial locking wedge 540 whose function is to prevent the sliding of the body of the electro-spindle 100. In addition, this wedge of axial locking 540 is located on the median longitudinal axis of the receptacle 500 so that when said shoulder 110 of the electro-spindle 100 is taken in said groove 541, the body back of the electro-spindle 100 either resting on said wedge setting 510 without being fitted into said support 200.

Un autre avantage de la présence de cette cale de blocage est qu'elle augmente la difficulté des opérations d'emmanchement et de retrait de l'électro-broche. En effet, cet obstacle supplémentaire oblige, lors de l'emmanchement, le manipulateur à soulever légèrement l'électro-broche 100 au niveau de son épaulement 110 afin le la désengager de la cale de blocage 540 puis de la reposer après un léger glissement et amorcer alors un mouvement de glissement sur l'axe 120 à des fins d'emmanchement de celle-ci à l'intérieur du coulant. Cette décomposition des mouvements d'emmanchement ralentit la mise en place de l'éléctro-broche mais permet au manipulateur de prendre toutes les précautions nécessaires à sa manipulation.Another advantage of the presence of this blocking block is that it increases the difficulty of the fitting operations and removal of the electro-spindle. Indeed, this additional obstacle obliges, during fitting, the manipulator to lift slightly the electro-spindle 100 at its shoulder 110 in order to disengage it from the blocking block 540 and then to reinstall it after a slight slide and then initiate a movement of sliding on the axis 120 for the purpose of fitting it to inside the sinker. This decomposition of movements fitting slows the installation of the electro-spindle but allows the operator to take all precautions necessary for its handling.

Les dessins des figures 5a, 5b, et 5c illustrent les phases de montage d'une électro-broche 100 dans un coulant 200 au moyen du berceau de manutention 400 ci-dessus décrit.The drawings of FIGS. 5a, 5b, and 5c illustrate the phases of mounting of an electro-spindle 100 in a flow 200 by means of the handling cradle 400 described above.

Comme illustrée sur le dessin de la figure 5a, l'électro-broche 100 est placée dans le berceau 400, celui-ci ayant été au préalable amené à hauteur et face au coulant 200 et fixé par l'intermédiaire de son organe de fixation 700 sur le premier épaulement extérieur rentrant 210 du coulant 200 au moyen de vis comme décrit ci-dessus. Ce berceau 400 permet de créer devant et à hauteur du coulant 200 un plan de travail horizontal fixe facilitant la connexion des câbles et fils se trouvant à l'intérieur et à l'arrière du coulant 200, et nécessaires au fonctionnement de l'électro-broche 100. Lors du déplacement du berceau 400 et jusqu'à cette position, l'épaulement 110 de l'électro-broche 100 est à ce moment là engagé dans la cale de blocage 540. As illustrated in the drawing of Figure 5a, the electro-spindle 100 is placed in the cradle 400, the latter having been previously brought up to the level of the runner 200 and fixed by through its fastener 700 on the first external re-entering shoulder 210 of the runner 200 by means of screws as described above. This cradle 400 allows you to create in front and at the level of the runner 200 a fixed horizontal work plan facilitating the connection of cables and wires inside and at the rear of the runner 200, and necessary for the operation of the electro-spindle 100. When moving the cradle 400 and up this position, the shoulder 110 of the electro-spindle 100 is at this moment engaged in the blocking block 540.

Comme le montre la figure 5b, la cale 510 est située sur le réceptacle 500 de façon à ce que, lors du glissement (flèche A) de l'électro-broche 100 (réalisé après désengagement de l'épaulement 110 de l'électro-broche 100 hors de la rainure 541 de la cale 540) vers le coulant 200 et de l'emmanchement de celle-ci, l'épaulement 110 de l'électro-broche 100 vient en butée sur la cale 510 au moment où le corps arrière de l'électro-broche 100 est porté par les deux épaulements intérieur 230 et intermédiaire 220 du coulant 200. Lors de cette mise en butée, l'électro-broche 100 est donc portée par les deux épaulements 230 et 220 et peut se libérer du berceau 400. Les vis sont alors ôtées du premier épaulement rentrant extérieur 210 du coulant 200, l'organe de fixation 700 est desserré du coulant 200 et le berceau 400 peut se dégager de ce dernier comme le montre la flèche B de la figure 5c.As shown in Figure 5b, the wedge 510 is located on the receptacle 500 so that, when sliding (arrow A) of the electro-spindle 100 (produced after disengagement of the shoulder 110 of the electro-spindle 100 out of the groove 541 of the shim 540) towards the flow 200 and the fitting thereof, the shoulder 110 of the electro-spindle 100 abuts on the wedge 510 at moment when the rear body of the electro-spindle 100 is carried by the two internal shoulders 230 and intermediate 220 of the slide 200. During this abutment, the electro-spindle 100 is therefore carried by the two shoulders 230 and 220 and can be released from the cradle 400. The screws are then removed from the first shoulder entering outside 210 of the runner 200, the fixing member 700 is loosened from the runner 200 and the cradle 400 can be released from this the latter as shown by arrow B in FIG. 5c.

Claims (10)

  1. A handling device for a tool-carrier cylindrical electric spindle (100) in a cylindrical support (200) of a machine tool, of the type comprising a handling cradle (400) formed by the combination of :
    a support bed (500) in which the electric spindle (100) is positioned,
    a gripping means (600) to ensure lifting of the said handling cradle,
    and a fixing mechanism (700) for fixing the said cradle (400) to the support (200) ensuring that the electric spindle (100) is held in position facing the support (200), WHEREIN the said fixing mechanism (700) of the handling cradle (400) is situated on one of the sides thereof and comprises a cylindrical tube (710) cut according to a plane parallel to the generator of the cylindrical tube which adapts on its outside diameter (720) to the inside diameter of the cylinder (240) of the support (200) so as to be coaxial therewith and having an inside diameter (730), larger than the diameter of the side body of the electric spindle (100) facing the aforementioned side.
  2. A handling device according to claim 1, WHEREIN the said gripping means (600) is a shackle, one end (610) of which is situated at the level of the centre of gravity of the cradle (400) and fixed to one of the sides of the support bed (500), and the other hand (620) of which is preformed to receive the hooking means (800) of a lifting machine.
  3. A handling device according to claim 1, WHEREIN the said support bed (500) comprises a U-shaped profile, the edges (520, 530) are chamfered in order to permit a good seating of the electric spindle (100) in the cradle (400) and sliding of the shoulder (110) of the electric spindle (100) without risks of scratches.
  4. A handling device according to claim 1, in which the said electric spindle (100) is provided at its front end with a shoulder (110), WHEREIN the said support bed (500) is provided with an adjusting wedge (510) situated on the median longitudinal axis of the support bed (500), close to the fixation mechanism (700) and on which the electric spindle (100) rests in such a way as to keep it horizontal, said spindle resting at the rear end of the support bed (500) via the said shoulder (110).
  5. A handling device according to claims 1 and 4, WHEREIN the said support bed (500) is provided with a device (540) for axial blocking of the said electric spindle (100) in the said support bed (500), preventing translational movement of the electric spindle (100) along its axis (120).
  6. A handling device according to claim 5, WHEREIN the said axial blocking device (540) comprises a groove (541) perpendicular to the axis (120) of sliding of the electric spindle (100) on the said support bed (500), the width of said groove being sufficient to accommodate the said shoulder (110) of the electric spindle (100) and the depth being sufficient to permit the said shoulder (110) to remain in contact with the chamfered edges (520 and 530) of the said support bed (500).
  7. A handling device according to claim 5, WHEREIN the said axial blocking device (540) is a blocking wedge grooved perpendicular to the said axis (120) of the electric spindle (100) and is situated on the median longitudinal axis of the support bed (500) such that, when the said shoulder (110) of the electric spindle (100) is engaged in the said groove (541), the rear body of the electric spindle (100) bears on the said adjusting wedge (510) without being inserted in the said support (200).
  8. A handling device according to claims 1 and 4, in which the said cylindrical support comprises a slide (200) of a high speed machine tool, of the type of that comprising three successive recessed shoulders forming collars, the first exterior shoulder (210) which is situated at the entrance if the slide, defining an opening diameter larger than the opening diameter of the other two intermediate and interior shoulders (220 and 230 respectively), WHEREIN the said adjusting wedge (510) is situated on the median longitudinal axis of the support bed (500) in such a way that, during sliding of the electric spindle (100) towards the slide (200) for the purpose of insertion thereof, the shoulder (110) of the electric spindle (100) becomes abutted against the said wedge (510) when the rear boby of the electric spindle (100) is inserted in the two intermediate and interior shoulders (220 and 230 respectively) of the said slide (200).
  9. A handling device according to claim 8, WHEREIN the said cylindrical tube (710), which is cut through a horizontal plane of the fixation mechanism (700), is drilled from one side to the other by at least two orifices (711 and 712) along an axis parallel to the axis of the tube (710) in order to permit the passage of fixation bolts for engagement in the threaded holes (212) drilled in the said first exterior shoulder (210) of the slide (200).
  10. A handling device according to any of the claims 1 to 9, WHEREIN the said fixation mechanism (700) is disposed relative to the support bed (500) such that, when the electric spindle (100) is positioned on the support bed (500), it is coaxial with the fixation mechanism.
EP97914401A 1996-03-14 1997-03-14 Device for handling an electric spindle of a high-speed machine tool Expired - Lifetime EP0889844B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9603424A FR2746086B1 (en) 1996-03-14 1996-03-14 HANDLING DEVICE OF A HIGH SPEED MACHINE TOOL ELECTRO-SPINDLE
FR9603424 1996-03-14
PCT/FR1997/000462 WO1997033826A1 (en) 1996-03-14 1997-03-14 Device for handling an electric spindle of a high-speed machine tool

Publications (2)

Publication Number Publication Date
EP0889844A1 EP0889844A1 (en) 1999-01-13
EP0889844B1 true EP0889844B1 (en) 2000-05-10

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP97914401A Expired - Lifetime EP0889844B1 (en) 1996-03-14 1997-03-14 Device for handling an electric spindle of a high-speed machine tool

Country Status (9)

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US (1) US6083145A (en)
EP (1) EP0889844B1 (en)
JP (1) JP2000506110A (en)
AU (1) AU2165597A (en)
DE (1) DE69701974T2 (en)
ES (1) ES2148951T3 (en)
FR (1) FR2746086B1 (en)
PT (1) PT889844E (en)
WO (1) WO1997033826A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1314043B1 (en) * 1999-10-14 2002-12-03 F M Elettromeccanica S R L HEAD FOR MACHINE TOOL.
FR2822739B1 (en) * 2001-03-07 2003-08-01 Renault Automation Comau CUTTING TOOL, ELECTROSPINNING AND MACHINE TOOL ADOPTING SUCH A CUTTING TOOL
WO2003024663A2 (en) * 2001-09-14 2003-03-27 Unova Ip Corp Spindle support with vibration damping
KR101416386B1 (en) * 2012-12-17 2014-07-08 현대자동차 주식회사 Spindle jig and Auto pallet changable machining center having the same
CN104475852B (en) * 2014-12-11 2017-02-22 无锡大龙马数控机床制造有限责任公司 Transverse adjusting mechanism of positioning cylinder
IT202100031988A1 (en) * 2021-12-21 2023-06-21 Cms Spa Numerical Control Working Apparatus

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH295187A (en) * 1950-11-17 1953-12-15 Bbc Brown Boveri & Cie Lifting and transporting device for objects with a circular cross-section, in particular barrels.
US3239077A (en) * 1957-11-21 1966-03-08 Texaco Inc Apparatus for moving heat exchanger tube bundles
US3836015A (en) * 1973-03-29 1974-09-17 B Travis Tube bundle extractor
US3935951A (en) * 1974-07-26 1976-02-03 Ulrich Claus Apparatus for pulling and replacing heat exchange tubing
US4688838A (en) * 1986-03-03 1987-08-25 Burlington Industries, Inc. Twister bobbin lifter and carrier
US4815903A (en) * 1987-08-07 1989-03-28 Skidmore Sr Samuel C Auxiliary support bearing for a milling machine head
US4944638A (en) * 1988-05-31 1990-07-31 Brohammer Lawrence F Removable spindle for drill heads
US5322410A (en) * 1992-01-22 1994-06-21 Stewart & Stevenson Services, Inc. Tube bundle extractor

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Publication number Publication date
DE69701974D1 (en) 2000-06-15
FR2746086B1 (en) 1998-05-22
FR2746086A1 (en) 1997-09-19
AU2165597A (en) 1997-10-01
WO1997033826A1 (en) 1997-09-18
PT889844E (en) 2000-11-30
JP2000506110A (en) 2000-05-23
DE69701974T2 (en) 2001-01-25
EP0889844A1 (en) 1999-01-13
US6083145A (en) 2000-07-04
ES2148951T3 (en) 2000-10-16

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