EP0889844A1 - 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

Info

Publication number
EP0889844A1
EP0889844A1 EP97914401A EP97914401A EP0889844A1 EP 0889844 A1 EP0889844 A1 EP 0889844A1 EP 97914401 A EP97914401 A EP 97914401A EP 97914401 A EP97914401 A EP 97914401A EP 0889844 A1 EP0889844 A1 EP 0889844A1
Authority
EP
European Patent Office
Prior art keywords
spindle
electro
receptacle
shoulder
handling
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP97914401A
Other languages
German (de)
French (fr)
Other versions
EP0889844B1 (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
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 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

Links

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 relates to the adaptations for ensuring the handling of an electro-spindle tool holder of a machine tool machining at high speed, in particular its connection and its mounting. and disassembly under the best conditions
  • High-speed machining of parts by a machine tool generally takes place from a tool driven in rotation by the motor axis of an electro-spindle installed in a flow itself. even mounted mobile in translation along three axes X, Y and Z
  • 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 drive station located upstream of the machining station and consisting of a set of members ensuring in particular the displacements in translation 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,
  • the powers required of the electro-spindles during high speed machining are such that they are large and can reach masses of up to sixty kilograms.
  • the outer surface of these electro-spindles is conventionally formed of a cylinder fitted with a shoulder located at the front thereof allows the fixing of the electro-spindle in the slide, as well as of a motor shaft opening or not, ensuring the drive of the tools.
  • These electro-spindles are of large dimensions and mass, making it difficult to handle them.
  • connection of an electro-spindle having the above-mentioned characteristics is carried out by placing the rear of the latter facing the flow in order to be able to connect and connect the cables located inside the flow and necessary for operation from the electro-spindle to the power outlets located at the rear of the latter. Maintaining this position is essential for the connection of all cables. This holding operation is made difficult by the position of the runner in height relative to the ground in front of which the electro-spindle must be held.
  • 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 fitting the rear body of the electro-spindle into a flow such as that already described by the applicant in French patent application no. 9600912.
  • This runner is in particular formed by three successive re-entrant shoulders forming crowns, the first outer shoulder located at the inlet of the runner defining an opening diameter greater than the opening diameter of the other two intermediate shoulders and interior
  • the rear body of the latter comes into contact with the two intermediate and interior shoulders, the latter comprising sealing members so as to create a sealed chamber in which oil, or any other intermediate material is used to absorb vibrations due to high-speed machining esse.
  • the electro-spindle is fixed in the runner by abutting on the intermediate shoulder of the runner, the rear face of the shoulder of the electro-spindle, the latter being held in position by a flange fixed to the by means of screws passing through it and coming to be screwed on the first external shoulder of the slide.
  • the rear body of the electro-spindle becomes slippery due to its contact with the aforementioned oil or intermediate material, thus making the handling of the electro-spindle dangerous.
  • 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 of the type constituted by a handling cradle formed by the association
  • the member for fixing the handling cradle is located at the front of it and consists of a cylindrical tube cut along a horizontal plane which adapts on its outside diameter to the diameter of the first inner cylinder of the slide so as to be coaxial with it and having an inside diameter greater than the diameter of the rear body of the electro-spindle.
  • This fixing member is fixed by means of two screws passing through it and screwing into holes drilled in the first re-entering external shoulder of the runner, thus using the support for fixing the flange holding the shoulder of the electro-spindle in abutment. the intermediate re-entrant shoulder of the runner.
  • the same holes drilled in the fixing support can be used to fix the fixing member.
  • this fixing member is arranged relative to the receptacle so that the horizontal electro-spindle on its support is coaxial with the fixing member.
  • the receptacle is provided on its median longitudinal axis of an adjustment shim, on which the electro-spindle slides, allowing the horizontal movement of the electro-spindle towards the slide while balancing the inclined electro-spindle due to the contact of its shoulder on the edges of the receptacle.
  • This adjustment shim located near the fixing member has the other advantage of preventing the electro-spindle from being in contact with the internal cylinder of the fixing member when the latter slides from the receptacle towards the sliding, preventing possible scratches from being created on the body of the electro-spindle by the friction of the body of the electro-spindle with the internal cylinder of said fixing member.
  • the adjustment shim is located on the receptacle so that when the electro-spindle slides towards the runner for fitting purposes, the shoulder of the electro-spindle abuts on the wedge when the rear body of the electro-spindle is carried by the two inner and intermediate shoulders of the slide, thus allowing disassembly and disengagement of the handling cradle in order to complete the phase of mounting by abutting the rear face of the shoulder of the electro-spindle on the intermediate shoulder of the slide and holding 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 the removal of the fixing member. This last operation is only possible if the fixing member is removed from the first re-entering shoulder outside of the slide.
  • the aforesaid receptacle is provided with a device for axially locking said electro-spindle in said receptacle preventing the translational movement of the electro-spindle on its axis.
  • This characteristic is particularly advantageous because it makes it possible to ensure the displacement of the handling cradle without the risk of it sliding on its axis of translation inside said cradle.
  • the gripping member comprises a hook located at the center of gravity of the handling cradle and located on one of its sides, so as to leave one side without obstacle for laying and / or the lateral removal of the electro-spindle in the cradle.
  • This hook has the advantage of allowing the lifting of the handling cradle by any lifting means, from the place where it is stored towards the front of the runner without imbalance which could affect its fixing on the runner in order to ensure the manipulator a work plan for mounting or dismounting 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 handling cradle, allowing by means of its gripping member, its lift by any lifting means at the level of the runner located in height, and a holding in a horizontal position facing the runner at means of its fixing member thus facilitating the connections and connections of the electro-spindle and a precise fitting in the flow due to the horizontal position of the electro-spindle and its coaxiality with the flow avoiding possible damage to sealing members located on the two inner and intermediate shoulders of the slide.
  • FIG. 2 is a perspective view of the handling cradle in which the electro-spindle drawn in dotted lines is placed.
  • Figure 3 is a perspective view of the handling cradle facing 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
  • Figures 5a, 5b and 5c respectively illustrate the phases of mounting the electro-spindle in the flow.
  • the drawing of Figure 1 is intended to illustrate the mounting of an electro-spindle referenced 100 as a whole in a flowing electro-spindle holder referenced 200 as a whole, produced by cylindrical penetration in the direction of arrow A of said electro-spindle in the flow.
  • the runner 200 is formed by three successive re-entrant shoulders forming crowns, the first outer shoulder 210 located at the inlet of the runner defining an opening diameter greater than the opening diameter of the other two intermediate shoulders 220 and interior 230
  • the rear body of the electro-spindle 100 comes into contact with sealing members 221 and 231 situated respectively on the intermediate reentrant shoulders 220 and interior 230 to delimit a sealed chamber 300 filled with oil.
  • the handling cradle of the invention referenced 400 as a whole consists of a receptacle 500 on which the electro-spindle 100 comes to rest, of a hook 600 serving as a grip as well as a fastening member 700 ensuring the maintenance of the cradle to the sliding.
  • the aforesaid fixing member 700 is formed of a cylindrical tube 710 cut along a horizontal plane located below the axis of symmetry
  • This cut cylindrical tube 710 is dimensioned so that its external diameter 720 adapts to the first internal cylinder 240 of the runner 200 so that the fixing member 700 is coaxial with the runner 200, and its inner diameter 730 is greater than the diameter of the rear body of the electro-spindle 100
  • the above cut tube 710 has two orifices 711 and 712 drilled in its thickness and whose axes are parallel to its axis. Thus, during the fixing of the cradle 400 to the runner 200, the aforesaid cut tube 710 is fitted into the first inner cylinder 240 of the runner along the axis of the latter.
  • the two orifices 71 1 and 712 are arranged in such a way that when the fixing member 700 is fitted into the slide 200, these are each coaxial with one of the threaded holes 212 drilled in the thickness of the shoulder 210 of the sinking 200.
  • screws fix the fixing member 700 of the cradle 200 to the sinking 200 by screwing into the threaded holes 212 thus allowing the means of fixing the electro-spindle to be used 100 as a support for fixing the cradle 400 to the runner 200.
  • the receptacle 500 of the cradle 400 on which the electro-spindle 100 is deposited is formed of a U-shaped profile in which is housed a wedge 510 located inside of it.
  • 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 via its shoulder 1 10 and in contact at the rear at one point on the shim 510 directly through its rear body.
  • the edges 520 and 530 of the aforementioned U-shaped 500 are bevelled in order to avoid scratches, possible consequences of the sliding of the shoulder 1 10 of the electro-spindle 100 on the edges 520 and 530 of the U-shaped profile and allow better seating of the electro-spindle 100 in the receptacle 500.
  • the said wedge 510 is located in the longitudinal plane of symmetry of the profiled U 500 and is of a height such that it keeps the electro-spindle 100 in a horizontal position facing the runner 200. This wedge 510 thus allows horizontal sliding of the electro-spindle 100 from the cradle 400 towards the runner 200 ensuring thus a precise fitting of the body rear of the electro-spindle 100 in the two intermediate shoulders 220 and interior
  • the above wedge 510 allows, by sliding without contact with the fixing member, avoids the rear body of the electro-spindle 100 of the risk of scratches which would no longer guarantee the tightness of the electro-spindle / runner assembly and therefore the damping of vibrations.
  • the abovementioned adjustment shim 510 is entirely or only in its part in contact with the body of the electro-spindle 100 made of "nylon" material in order to avoid any risk of scratching during the sliding of the electro-spindle on it. As illustrated in FIG.
  • the gripping member 600 is constituted by a hook, one end of which 610 is located on one of the sides of the receptacle 500 and the other end of which 620 is preformed to receive the hooking member 800 ( see Figures 4a, 4b, 4c) of a lifting machine.
  • This hook 600 has the advantage of ensuring a grip on the cradle 400 to bring it by means of a lifting device such as a hoist, at the height of the runner 200, to position it facing the latter for the fix, and lighten the load at the end of the sinking, avoiding bracing during assembly and / or disassembly operations.
  • the above hook 600 is advantageously disposed at the center of gravity of the receptacle 500 making it possible to balance the whole of the cradle 400 while being in rotation relative to the rotation member 800 on the hook of the machine. lifting due to its weight, ensuring its positioning relative to the vertical and therefore relative to the runner 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 during the 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 the electro-spindle falling 100
  • the locking device is constituted by 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 1 10 of the electro-spindle 100 and its depth allows said shoulder 1 10 to remain in contact with the bevelled edges 520 and 530 of said receptacle 500
  • this axial locking wedge 540 whose function is to prevent the sliding of the body of the electro-spindle 100
  • this axial locking wedge 540 is located on the median longitudinal axis of the receptacle 500 so that that when said shoulder 110 of the electro-spindle 100 is caught in said groove 541, the rear body of the electro-spindle 100 is in abutment on said adjustment shim 510 without being fitted into said support 200
  • this blocking device increases the difficulty of the fitting and removal operations of the electro-spindle. In fact, this additional obstacle forces the manipulator to lift slightly during fitting. 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 sliding and then initiate a sliding movement on the axis 120 for the purpose of fitting the -this inside the flow This decomposition of the fitting movements slows the installation of the electro-spindle but allows the manipulator to take all the precautions necessary for its manipulation.
  • FIGS. 5a, 5b, and 5c illustrate the phases of mounting 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 brought up beforehand and facing the runner 200 and fixed by means of its fixing member 700 on the first re-entering external shoulder 210 of the runner 200 by means of screws as described above
  • This cradle 400 makes it possible to create, in front of and at the height of the runner 200, a fixed horizontal work surface facilitating the connection of the cables and wires located at the inside and behind the runner 200, and necessary for the operation of the electro-spindle 100
  • the shoulder 1 10 of the electro-spindle 100 is at this time there engaged in the blocking block 540
  • the block 510 is located on the receptacle 500 so that, during the sliding (arrow A) of the electro-spindle 100 (produced after disengagement of the shoulder 1 10 of the electro- pin 100 out of groove 541 of the - lo ⁇ shim 540) towards the

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Turning (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Automatic Assembly (AREA)

Abstract

A device for handling a cylindrical electric tool-holder spindle (100) in a cylindrical holder (200) of a machine tool is disclosed. The device comprises a handling cradle (400) consisting of a combination of a receptacle (500) in which the electric spindle (100) is placed, a gripping member (600) for lifting said handling cradle, and a fastening member (700) for fastening the cradle (400) to the holder (200) to hold the electric spindle (100) in place relative to the holder (200). Said fastening member (700) is arranged in front of the handling cradle (400) and consists of a cylindrical tube (710) cut along a horizontal plane and having an outer diameter (720) matching the inner diameter of the cylinder (240) of the holder (200), such that it is coaxial therewith, and an inner diameter (730) greater than the diameter of the rear body of the electric spindle (100). The device is useful for maintaining machine tools.

Description

DISPOSITL DE MANUTENTION D UNE ELECTRO-BROCHE DE MACHINE-OUTIL D'USINAGE A GRANDE VITESSE HANDLING DEVICE FOR A HIGH SPEED MACHINE TOOL ELECTRO-SPINDLE
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 L'usinage à grande vitesse de pièces par une machine-outil s'opère en général à partir d'un outil entraîné 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 ZThe present invention relates to the field of machine tools and more particularly relates to the adaptations for ensuring the handling of an electro-spindle tool holder of a machine tool machining at high speed, in particular its connection and its mounting. and disassembly under the best conditions High-speed machining of parts by a machine tool generally takes place from a tool driven in rotation by the motor axis of an electro-spindle installed in a flow itself. even mounted mobile 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 à proprement dit comportant l'outil entraîné en rotation par l'axe moteur de l'électro-broche et façonnant la pièce à usiner,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,
- un poste d'entraînement 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,- a drive station located upstream of the machining station and consisting of a set of members ensuring in particular the displacements in translation 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,
- et un poste de commande collaborant avec le poste d'entraînement et en fonction d'un programme d'instructions préétablies pour assumer les différentes phases d'usinage de ladite pièce- 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'entraînement des outils. Ces électro-broches sont de dimensions et de masse importantes rendant difficiles les opérations de manutention de celles-ci. 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-brocheThe powers required of the electro-spindles during high speed machining are such that they are large and can reach masses of up to sixty kilograms. The outer surface of these electro-spindles is conventionally formed of a cylinder fitted with a shoulder located at the front thereof allows the fixing of the electro-spindle in the slide, as well as of a motor shaft opening or not, ensuring the drive of the tools. These electro-spindles are of large dimensions and mass, making it difficult to handle them. Indeed, the connection of an electro-spindle having the above-mentioned characteristics is carried out by placing the rear of the latter facing the flow in order to be able to connect and connect the cables located inside the flow and necessary for operation from the electro-spindle to the power outlets located at the rear of the latter. Maintaining this position is essential for the connection of all cables. This holding operation is made difficult by the position of the runner in height relative to the ground in front of which the electro-spindle must be held.
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 fitting the rear body of the electro-spindle into a flow such as that already described by the applicant in French patent application no. 9600912. This runner is in particular formed by three successive re-entrant shoulders forming crowns, the first outer shoulder located at the inlet of the runner defining an opening diameter greater than the opening diameter of the other two intermediate shoulders and interior Thus, during assembly of the electro-spindle, the rear body of the latter comes into contact with the two intermediate and interior shoulders, the latter comprising sealing members so as to create a sealed chamber in which oil, or any other intermediate material is used to absorb vibrations due to high-speed machining esse. The electro-spindle is fixed in the runner by abutting on the intermediate shoulder of the runner, the rear face of the shoulder of the electro-spindle, the latter being held in position by a flange fixed to the by means of screws passing through it and coming to be screwed on the first external shoulder of the slide.
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'entretienThe fitting operation of the aforesaid rear body in the runner is delicate because it requires great precision to avoid any damage to the aforesaid sealing members which would result in risks of leakage and therefore a lower return on the damping of vibrations, and the possibility of an accident due to the presence of the electrical connections necessary for the operation of the electrospindle. This precision is difficult to achieve due to the weight and volume of the electro-spindle which must be kept at height and in front of the flow during the intervention operations of the maintenance team
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-brocheIn addition, during the disassembly operation, the rear body of the electro-spindle becomes slippery due to its contact with the aforementioned oil or intermediate material, thus making the handling of the electro-spindle dangerous.
Partant de cet état de fait, la demanderesse a imaginé un concept original d'un 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, 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 coulantStarting from this state of affairs, the applicant has imagined an original concept of a 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, allowing to obviate the aforementioned drawbacks for the connection as well as for the assembly and disassembly of the electro-spindle in the slide by creating at height and facing the latter a fixed work surface 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, le dispositif de manutention d'une électro-broche cylindrique porte-outil dans un support cylindrique du type coulant d'une machine-outil d'usinage a grande vitesse est du type de celui constitué par un berceau de manutention formé par l'associationTo achieve this, 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 of the type constituted by a handling cradle formed by the association
- d'un réceptacle dans lequel se place l'électro-broche,- a receptacle in which the electro-spindle is placed,
- d'un organe de préhension assurant le levage dudit berceau de manutention, - et d'un organe de fixation du berceau au coulant, et est remarquable en ce que l'organe de fixation du berceau de manutention, est situe 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 Ceci a pour avantage de positionner le berceau par rapport au coulant par un centrage cylindrique en permettant a l'organe de fixation de former coulisse avec le coulant assurant ainsi une coaxialite 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- a gripping member ensuring the lifting of said handling cradle, - and a member for fixing the cradle to the slide, and is remarkable in that the member for fixing the handling cradle is located at the front of it and consists of a cylindrical tube cut along a horizontal plane which adapts on its outside diameter to the diameter of the first inner cylinder of the slide so as to be coaxial with it and having an inside diameter greater than the diameter of the rear body of the electro-spindle This has the advantage of positioning the cradle relative to the runner by a cylindrical centering by allowing the fixing member to form a slide with the runner thus ensuring coaxiality between the runner and the member of fixation. Another advantage of this arrangement is the possibility of sliding the electro-spindle in the inner cylinder of the fixing member due to its larger diameter.
L'association elle-même a de nombreux avantages et pami-ceux-ciThe association itself has many advantages and some of these
- placer l'électro-broche sur un support stable, - permettre à l'électro-broche de glisser du berceau vers le coulant,- place the electro-spindle on a stable support, - allow the electro-spindle to slide from the cradle to the slide,
- assurer un maintien en position de l'électro-broche à hauteur et en face du coulant,- maintain the electro-spindle in position at height and in front of the slide,
- permettre les opérations de pose et de dépose de l'électro-broche vers le coulant,- allow the operations of installation and removal of the electro-spindle towards the flow,
- assurer un plan de travail stable pour les opérations d'intervention sur l'électro-broche.- 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 suport 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 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 vient 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.This fixing member is fixed by means of two screws passing through it and screwing into holes drilled in the first re-entering external shoulder of the runner, thus using the support for fixing the flange holding the shoulder of the electro-spindle in abutment. the intermediate re-entrant shoulder of the runner. Advantageously, the same holes drilled in the fixing support can be used to fix the fixing member. In addition, this fixing member is arranged relative to the receptacle so that the horizontal electro-spindle on its support is coaxial with the fixing member. According to a particularly advantageous characteristic of the invention, the receptacle is provided on its median longitudinal axis of an adjustment shim, on which the electro-spindle slides, allowing the horizontal movement of the electro-spindle towards the slide while balancing the inclined electro-spindle due to the contact of its shoulder on the edges of the receptacle. This adjustment shim located near the fixing member has the other advantage of preventing the electro-spindle from being in contact with the internal cylinder of the fixing member when the latter slides from the receptacle towards the sliding, preventing possible scratches from being created on the body of the electro-spindle by the friction of the body of the electro-spindle with the internal cylinder of said fixing member. In addition, by a particularly advantageous embodiment, the adjustment shim is located on the receptacle so that when the electro-spindle slides towards the runner for fitting purposes, the shoulder of the electro-spindle abuts on the wedge when the rear body of the electro-spindle is carried by the two inner and intermediate shoulders of the slide, thus allowing disassembly and disengagement of the handling cradle in order to complete the phase of mounting by abutting the rear face of the shoulder of the electro-spindle on the intermediate shoulder of the slide and holding 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 the removal of the fixing member. This last operation is only possible if the fixing member is removed from the first re-entering shoulder outside of the slide.
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 aforesaid receptacle is provided with a device for axially locking said electro-spindle in said receptacle preventing the translational movement of the electro-spindle on its axis. This characteristic is particularly advantageous because it makes it possible to ensure the displacement of the handling cradle without the risk of it sliding 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 member comprises a hook located at the center of gravity of the handling cradle and located on one of its sides, so as to leave one side without obstacle for laying and / or the lateral removal of the electro-spindle in the cradle. This hook has the advantage of allowing the lifting of the handling cradle by any lifting means, from the place where it is stored towards the front of the runner without imbalance which could affect its fixing on the runner in order to ensure the manipulator a work plan for mounting or dismounting the electro-spindle. For the mounting operation, 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. 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 dispositif 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. Sur ces dessins . La figure 1 est une vue en coupe suivant un plan passant par l'axe du coulant de l'assemblage coulant/électro broche.Thus, the electro-spindle is placed on a handling cradle, allowing by means of its gripping member, its lift by any lifting means at the level of the runner located in height, and a holding in a horizontal position facing the runner at means of its fixing member thus facilitating the connections and connections of the electro-spindle and a precise fitting in the flow due to the horizontal position of the electro-spindle and its coaxiality with the flow avoiding possible damage to sealing members located on the two inner and intermediate shoulders of the slide. This handling cradle will also have the advantage of allowing disassembly of the electro-spindle without difficulty due to its contact with the oil because it defines a receptacle where the electro-spindle is placed without the manipulator don't have to wear this. Although the main aspects of the invention considered to be new have been expressed above, further details concerning a preferred embodiment of a device for handling an electro-spindle of a machine- high speed machining tool respecting the fundamental concepts of the invention will be better understood by referring to the description below and to the accompanying drawings illustrating this embodiment. In these drawings. Figure 1 is a sectional view along a plane passing through the axis of the flow of the flow assembly / electro spindle.
La figure 2 est une vue en perspective du berceau de manutention dans lequel est placée l'électro-broche dessinée en traits pointillés.FIG. 2 is a perspective view of the handling cradle in which the electro-spindle drawn in dotted lines is placed.
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 handling cradle facing 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'électro-broche du berceau de manutention portant l'électro-brocheFigure 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. 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 21 1 qui, venant appuyer sur la face avant de l'épaulement 1 10 de l'électro-broche 100, est fixée par des vis 21 la la traversant et se vissant sur des trous filetés 212 perçant de part en part le premier épaulement rentrant 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.Figures 5a, 5b and 5c respectively illustrate the phases of mounting the electro-spindle in the flow. The drawing of Figure 1 is intended to illustrate the mounting of an electro-spindle referenced 100 as a whole in a flowing electro-spindle holder referenced 200 as a whole, produced by cylindrical penetration in the direction of arrow A of said electro-spindle in the flow. The runner 200 is formed by three successive re-entrant shoulders forming crowns, the first outer shoulder 210 located at the inlet of the runner defining an opening diameter greater than the opening diameter of the other two intermediate shoulders 220 and interior 230 The rear body of the electro-spindle 100 comes into contact with sealing members 221 and 231 situated respectively on the intermediate reentrant shoulders 220 and interior 230 to delimit a sealed chamber 300 filled with oil. The rear face of the shoulder 110 of the electro-spindle 100 abuts on the front face of the re-entrant intermediate shoulder 220, the electro-spindle 100 is then held in position in the runner 200 by means of a flange 21 1 which, coming to press on the front face of the shoulder 1 10 of the electro-spindle 100, is fixed by screws 21 passing therethrough and being screwed on threaded holes 212 piercing right through the first shoulder entering 210. As shown in the drawing in FIG. 2, the handling cradle of the invention referenced 400 as a whole consists of a receptacle 500 on which the electro-spindle 100 comes to rest, of a hook 600 serving as a grip as well as a fastening member 700 ensuring the maintenance of the cradle to the sliding.
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 symétrieAccording to the invention, the aforesaid fixing member 700 is formed of a cylindrical tube 710 cut along a horizontal plane located below the axis of symmetry
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 71 1 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 200.120 of the electro-spindle. This cut cylindrical tube 710 is dimensioned so that its external diameter 720 adapts to the first internal cylinder 240 of the runner 200 so that the fixing member 700 is coaxial with the runner 200, and its inner diameter 730 is greater than the diameter of the rear body of the electro-spindle 100 The above cut tube 710 has two orifices 711 and 712 drilled in its thickness and whose axes are parallel to its axis. Thus, during the fixing of the cradle 400 to the runner 200, the aforesaid cut tube 710 is fitted into the first inner cylinder 240 of the runner along the axis of the latter. The two orifices 71 1 and 712 are arranged in such a way that when the fixing member 700 is fitted into the slide 200, these are each coaxial with one of the threaded holes 212 drilled in the thickness of the shoulder 210 of the sinking 200. By these holes, screws (not shown) fix the fixing member 700 of the cradle 200 to the sinking 200 by screwing into the threaded holes 212 thus allowing the means of fixing the electro-spindle to be used 100 as a support for fixing the cradle 400 to the runner 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 1 10 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 1 10 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 intérieurThe receptacle 500 of the cradle 400 on which the electro-spindle 100 is deposited is formed of a U-shaped profile in which is housed a wedge 510 located inside of it. 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 via its shoulder 1 10 and in contact at the rear at one point on the shim 510 directly through its rear body. According to a particularly advantageous characteristic of the invention, the edges 520 and 530 of the aforementioned U-shaped 500 are bevelled in order to avoid scratches, possible consequences of the sliding of the shoulder 1 10 of the electro-spindle 100 on the edges 520 and 530 of the U-shaped profile and allow better seating of the electro-spindle 100 in the receptacle 500. According to another advantageous characteristic of the invention, the said wedge 510 is located in the longitudinal plane of symmetry of the profiled U 500 and is of a height such that it keeps the electro-spindle 100 in a horizontal position facing the runner 200. This wedge 510 thus allows horizontal sliding of the electro-spindle 100 from the cradle 400 towards the runner 200 ensuring thus a precise fitting of the body rear of the electro-spindle 100 in the two intermediate shoulders 220 and interior
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. 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 200.230 of the runner 200 comprising the sealing elements 221 and 231, which require great precision in the mounting of the electro-spindle 100 in the runner 200. In addition, the above wedge 510 allows, by sliding without contact with the fixing member, avoids the rear body of the electro-spindle 100 of the risk of scratches which would no longer guarantee the tightness of the electro-spindle / runner assembly and therefore the damping of vibrations. On the other hand, the abovementioned adjustment shim 510 is entirely or only in its part in contact with the body of the electro-spindle 100 made of "nylon" material in order to avoid any risk of scratching during the sliding of the electro-spindle on it. As illustrated in FIG. 3, the gripping member 600 is constituted by a hook, one end of which 610 is located on one of the sides of the receptacle 500 and the other end of which 620 is preformed to receive the hooking member 800 ( see Figures 4a, 4b, 4c) of a lifting machine. This hook 600 has the advantage of ensuring a grip on the cradle 400 to bring it by means of a lifting device such as a hoist, at the height of the runner 200, to position it facing the latter for the fix, and lighten the load at the end of the sinking, avoiding bracing during assembly and / or disassembly operations. The above hook 600 is advantageously disposed at the center of gravity of the receptacle 500 making it possible to balance the whole of the cradle 400 while being in rotation relative to the rotation member 800 on the hook of the machine. lifting due to its weight, ensuring its positioning relative to the vertical and therefore relative to the runner 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 100As 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 during the 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 the electro-spindle falling 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 1 10 de l'éléctro-broche 100 et sa profondeur permet audit épaulement 1 10 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 1 10 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 200According to a preferred embodiment of the invention, the locking device is constituted by 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 1 10 of the electro-spindle 100 and its depth allows said shoulder 1 10 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 at three points and is not hampered by this axial locking wedge 540 whose function is to prevent the sliding of the body of the electro-spindle 100 In addition, this axial locking wedge 540 is located on the median longitudinal axis of the receptacle 500 so that that when said shoulder 110 of the electro-spindle 100 is caught in said groove 541, the rear body of the electro-spindle 100 is in abutment on said adjustment shim 510 without being fitted into said support 200
Un autre avantage de la présence de cette 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'électro-broche mais permet au manipulateur de prendre toutes les précautions nécessaires à sa manipulation.Another advantage of the presence of this blocking device is that it increases the difficulty of the fitting and removal operations of the electro-spindle. In fact, this additional obstacle forces the manipulator to lift slightly during fitting. 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 sliding and then initiate a sliding movement on the axis 120 for the purpose of fitting the -this inside the flow This decomposition of the fitting movements slows the installation of the electro-spindle but allows the manipulator to take all the precautions necessary for its manipulation.
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 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 1 10 de l'électro-broche 100 est à ce moment là engagé dans la cale de blocage 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 1 10 de l'électro-broche 100 hors de la rainure 541 de la - lo ¬ cale 540) vers le coulant 200 et de l'emmanchement de celle-ci, l'épaulement 1 10 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 5cAs illustrated in the drawing in FIG. 5a, the electro-spindle 100 is placed in the cradle 400, the latter having been brought up beforehand and facing the runner 200 and fixed by means of its fixing member 700 on the first re-entering external shoulder 210 of the runner 200 by means of screws as described above This cradle 400 makes it possible to create, in front of and at the height of the runner 200, a fixed horizontal work surface facilitating the connection of the cables and wires located at the inside and behind the runner 200, and necessary for the operation of the electro-spindle 100 When moving the cradle 400 and to this position, the shoulder 1 10 of the electro-spindle 100 is at this time there engaged in the blocking block 540 As shown in Figure 5b, the block 510 is located on the receptacle 500 so that, during the sliding (arrow A) of the electro-spindle 100 (produced after disengagement of the shoulder 1 10 of the electro- pin 100 out of groove 541 of the - lo ¬ shim 540) towards the runner 200 and the fitting thereof, the shoulder 1 10 of the electro-spindle 100 abuts on the shim 510 when the rear body of the electro- spindle 100 is carried by the two inner 230 and intermediate shoulders 220 of the runner 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 re-entering external shoulder 210 of the runner 200, the fixing member 700 is loosened from the runner 200 and the cradle 400 can be released from the latter as shown by arrow B in FIG. 5c
On comprend que le dispositif de manutention d'une électro-broche de machine outil d'usinage à grande vitesse qui vient d'être décrit et représenté, l'a ete en vue d'une divulgation plutôt que d'une limitation Bien entendu, divers aménagements, modifications et améliorations pourront être apportées à l'exemple ci- dessus sans pour autant sortir du cadre de l'invention pπs dans ses aspects les plus largesIt is understood that the device for handling an electro-spindle of a high-speed machining machine tool which has just been described and shown, has been for the purpose of disclosure rather than limitation. various arrangements, modifications and improvements could be made to the above example without departing from the scope of the invention pπs in its broadest aspects
Afin de permettre une meilleure compréhension des dessins, une liste des références avec leurs légendes est ci-aprés énuméréeIn order to allow a better understanding of the drawings, a list of references with their legends is listed below
100 Electro-broche100 Electro-spindle
110 Epaulement de l'électro-broche110 Electro-spindle shoulder
120 Axe de symétrie de l'électro-broche120 Axis of symmetry of the electro-spindle
200 Coulant 210 Epaulement extérieur du coulant200 Sinking 210 Outside shoulder of sinking
21 1 Bride de fixation de l'électro-broche 21 1a Vis de fixation de la bride21 1 Electro-spindle fixing flange 21 1a Flange fixing screw
212 Trous filetés212 threaded holes
220 Epaulement intermédiaire du coulant 221 Organe d'étanchéité logé dans l'épaulement intermédiaire 230 Epaulement intérieur du coulant220 Intermediate shoulder of the runner 221 Sealing member housed in the intermediate shoulder 230 Internal shoulder of the runner
231 Organe d'étanchéité logé dans l'épaulement intérieur 240 Premier cylindre intérieur du coulant231 Sealing member housed in the inner shoulder 240 First inner cylinder of the slide
300 Chambre étanche300 Waterproof chamber
400 Berceau de manutention de l'électro- broche400 Electric handling cradle brooch
500 Réceptacle500 receptacle
510 Cale de réglage510 Adjustment shim
520,530 Bords du réceptacle 540 Cale de blocage 541 Rainure de la cale de blocage520,530 Receptacle edges 540 Locking block 541 Locking wedge groove
600 Crochet de préhension600 Gripping hook
610 Extrémité du crochet fixée au réceptacle610 End of hook attached to receptacle
620 Extrémité d'accrochage620 Hanging end
700 Organe de fixation700 Fixing device
710 Tube cylindrique coupé710 Cylindrical tube cut
71 1.712 Trous percés dans le tube71 1.712 Holes drilled in the tube
720 Diamètre extérieur du tube 730 Diamètre intérieur du tube720 Outside diameter of the tube 730 Inside diameter of the tube
800 Organe d'accrochage d'un engin de levage800 Latching device for a lifting device
Flèche A Mouvement d'emmanchement de l'électro-broche 100Arrow A Electro-spindle fitting movement 100
Flèche B Mouvement de dégagement du berceauArrow B Cradle release movement
400 400

Claims

REVENDICATIONS
1 Dispositif de manutention d'une électro-broche cylindrique porte-outil ( 100) dans un support cylindrique (200) de machine-outil d'usinage, du type de celui constitué par un berceau de manutention (400) formé par l'association - d'un réceptacle (500) dans lequel se place l'électro-broche ( 100),1 Device for handling a cylindrical electro-spindle tool holder (100) in a cylindrical support (200) for a machine tool, of the type constituted by a handling cradle (400) formed by the association - a receptacle (500) in which the electro-spindle (100) is placed,
- d'un organe de préhension (600) assurant le levage dudit berceau de manutention,- a gripping member (600) ensuring the lifting of said handling cradle,
- et d'un organe de fixation (700) dudit berceau (400) au support (200) assurant le maintien en position de l'électro-broche (100) face au support (200), CARACTERISE PAR LE FAIT QUE le susdit organe de fixation (700) du berceau de manutention (400) est situé à l'avant de celui-ci et est constitué d'un tube cylindrique (710) coupe selon un plan horizontal qui s'adapte sur son diamètre extérieur (720) au diamètre intérieur du cylindre (240) du support (200) de façon à être coaxial avec celui- ci et ayant un diamètre intérieur (730), supérieur au diamètre du corps arrière de Pélectro- broche (100)- And a fixing member (700) of said cradle (400) to the support (200) ensuring the maintenance in position of the electro-spindle (100) facing the support (200), CHARACTERIZED BY THE FACT THAT the above-mentioned organ fixing (700) of the handling cradle (400) is located at the front of it and consists of a cylindrical tube (710) cut along a horizontal plane which fits on its outside diameter (720) to internal diameter of the cylinder (240) of the support (200) so as to be coaxial with the latter and having an internal diameter (730), greater than the diameter of the rear body of the electro-spindle (100)
2 Dispositif de manutention selon la revendication 1, CARACTERISE PAR LE FAIT QUE le susdit organe de préhension (600) est un crochet dont une extrémité (610) est située au niveau du centre de gravité du berceau (400) et fixée à un des côtés du réceptacle (500) et dont l'autre extrémité (620) est préformée pour recevoir l'organe d'accrochage (800) d'un engin de levage2 Handling device according to claim 1, CHARACTERIZED BY THE FACT THAT the aforesaid gripping member (600) is a hook, one end (610) of which is located at the center of gravity of the cradle (400) and fixed to one of the sides of the receptacle (500) and the other end (620) of which is preformed to receive the hooking member (800) of a lifting machine
3 Dispositif de manutention selon la revendication 1, CARACTERISE PAR LE FAIT QUE le susdit réceptacle (500) est constitué d'un profilé en U dont les bords (520,530) sont biseautés afin de permettre à l'électro-broche (100) une bonne assise dans le berceau (400) et un glissement de l'épaulement (1 10) de l'électro-broche (100) sans risque de rayure3 Handling device according to claim 1, CHARACTERIZED BY THE FACT THAT the aforesaid receptacle (500) consists of a U-shaped profile whose edges (520,530) are bevelled in order to allow the electro-spindle (100) a good sitting in the cradle (400) and sliding the shoulder (1 10) of the electro-spindle (100) without risk of scratching
4 Dispositif de manutention selon la revendication 1 , dans lequel la susdite électro-broche (100) est munie à l'avant d'un épaulement (1 10), CARACTERISE PAR LE FAIT QUE le susdit réceptacle (500) est muni d'une cale de réglage (510) située sur l'axe longitudinal médian du réceptacle (500), à proximité de l'organe de fixation (700) et sur laquelle repose l'électro-broche ( 100) de manière à la maintenir horizontale, cette dernière reposant à l'arrière du réceptacle (500) via le susdit épaulement (1 10)4 Handling device according to claim 1, wherein the above electro-spindle (100) is provided at the front with a shoulder (1 10), CHARACTERIZED BY THE FACT THAT the above receptacle (500) is provided with a adjustment shim (510) located on the median longitudinal axis of the receptacle (500), near the fixing member (700) and on which the electro-spindle (100) rests so as to keep it horizontal, this last resting at the rear of the receptacle (500) via the aforesaid shoulder (1 10)
5 Dispositif de manutention selon les revendications 1 et 4, CARACTERISE PAR LE FAIT QUE le susdit réceptacle (500) est muni d'un dispositif de blocage axial5 Handling device according to claims 1 and 4, CHARACTERIZED BY THE FACT THAT the aforesaid receptacle (500) is provided with an axial locking device
(540) de ladite électro-broche (100) dans ledit réceptacle (500) empêchant le mouvement de translation de l'électro-broche (100) sur son axe (120).(540) of said electro-spindle (100) in said receptacle (500) preventing the translational movement of the electro-spindle (100) on its axis (120).
6. Dispositif de manutention selon les revendications 1 et 5, CARACTERISE PAR LE FAIT QUE le susdit dispositif de blocage axial (540) consiste en une rainure (541) perpendiculaire à l'axe de glissement (120) de l'électro-broche (100) sur ledit réceptacle (500), dont la largeur permet d'accueillir le susdit épaulement (1 10) de l'électro-broche (100) et dont la profondeur permet audit épaulement (110) de rester en contact avec les bords biseautés (520 et 530) dudit réceptacle (500). 6. Handling device according to claims 1 and 5, CHARACTERIZED BY THE FACT THAT the above-mentioned axial locking device (540) consists of a groove (541) perpendicular to the sliding axis (120) of the electro-spindle ( 100) on said receptacle (500), the width of which accommodates the aforementioned shoulder (110) of the electro-spindle (100) and the depth of which allows said shoulder (110) to remain in contact with the bevelled edges (520 and 530) of said receptacle (500).
7 Dispositif de manutention selon les revendications 1 et 5,7 handling device according to claims 1 and 5,
CARACTERISE PAR LE FAIT QUE le susdit dispositif de blocage axial (540) est une cale de blocage rainurée perpendiculairement audit axe (120) de l'électro-broche (100) et située sur l'axe longitudinal médian du réceptacle (500) de façon à ce que lorsque ledit épaulement (1 10) 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).CHARACTERIZED BY THE FACT THAT the above-mentioned axial locking device (540) is a locking wedge grooved perpendicular to said axis (120) of the electro-spindle (100) and situated on the median longitudinal axis of the receptacle (500) so that when said shoulder (110) of the electro-spindle (100) is caught in said groove (541), the rear body of the electro-spindle (100) bears on said adjustment shim (510 ) without being fitted into said support (200).
8. Dispositif de manutention selon les revendications 1, 4 et 5, dans lequel le susdit support cylindrique est constitué par un coulant (200) d'une machine-outil à grande vitesse, du type de celui comprenant trois épaulements rentrants successifs formant couronnes, le premier épaulement extérieur (210) étant 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), CARACTERISE PAR LE FAIT QUE la susdite cale de réglage (510) est située sur l'axe longitudinal médian du réceptacle (500) de telle façon que lors du glissement de l'électro-broche (100) vers le coulant (200) à des fins d'emmanchement de celle-ci, l'épaulement (110) de l'électro- broche (100) vient en butée sur la susdite cale (510) au moment où le corps arrière de l'électro-broche (100) est emmanchée dans les deux épaulements intermédiaire (220) et intérieur (230) du susdit coulant (200).8. A handling device according to claims 1, 4 and 5, in which the aforesaid cylindrical support is constituted by a flow (200) of a high-speed machine tool, of the type comprising that comprising three successive re-entrant shoulders forming crowns, the first external shoulder (210) being situated at the entrance of the sag delimiting an opening diameter greater than the opening diameter of the other two intermediate (220) and internal (230) shoulders, CHARACTERIZED BY THE FACT THAT the above wedge of adjustment (510) is located on the median longitudinal axis of the receptacle (500) so that when the electro-spindle (100) slides towards the slide (200) for the purpose of fitting it, the shoulder (110) of the electro-spindle (100) abuts on the said wedge (510) when the rear body of the electro-spindle (100) is fitted into the two intermediate shoulders (220) and interior (230) of the above-mentioned flow (200) .
9. Dispositif de manutention selon les revendications 1 et 8, CARACTERISE PAR LE FAIT QUE le susdit tube cylindrique (710) coupé selon un plan horizontal de l'organe de fixation (700) est percé de part en part par au moins deux orifices (71 1 et 712) selon un axe parallèle à l'axe du tube (710) afin de permettre le passage de vis de fixation venant se visser dans des trous filetés (212) percés dans le susdit premier épaulement extérieur (210) du coulant (200).9. Handling device according to claims 1 and 8, CHARACTERIZED BY THE FACT THAT the aforesaid cylindrical tube (710) cut along a horizontal plane of the fixing member (700) is drilled right through by at least two orifices ( 71 1 and 712) along an axis parallel to the axis of the tube (710) in order to allow the passage of fixing screws coming to be screwed into threaded holes (212) drilled in the aforesaid first outer shoulder (210) of the slide (200).
10. Dispositif de manutention selon les revendications 1 et 8, CARACTERISE PAR LE FAIT QUE le susdit organe de fixation (700) est disposé par rapport au réceptacle (500) de façon à ce que lorsque l'électro-broche (100) est placée sur le réceptacle (500), celle-ci soit coaxiale avec l'organe de fixation.10. Handling device according to claims 1 and 8, CHARACTERIZED BY THE FACT THAT the aforesaid fixing member (700) is disposed relative to the receptacle (500) so that when the electro-spindle (100) is placed on the receptacle (500), the latter is coaxial with the fixing member.
RENAULT AUTOMATION S.A. PAR PROCURATION CABINET DELHAYE RENAULT AUTOMATION S.A. BY PROXY CABINET DELHAYE
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

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

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JP (1) JP2000506110A (en)
AU (1) AU2165597A (en)
DE (1) DE69701974T2 (en)
ES (1) ES2148951T3 (en)
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PT889844E (en) 2000-11-30
DE69701974D1 (en) 2000-06-15
ES2148951T3 (en) 2000-10-16
FR2746086A1 (en) 1997-09-19
US6083145A (en) 2000-07-04
JP2000506110A (en) 2000-05-23
WO1997033826A1 (en) 1997-09-18
FR2746086B1 (en) 1998-05-22
EP0889844B1 (en) 2000-05-10
AU2165597A (en) 1997-10-01
DE69701974T2 (en) 2001-01-25

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