WO2002089300A1 - Device for shaping winding coils of rotating electrical machines - Google Patents

Device for shaping winding coils of rotating electrical machines Download PDF

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Publication number
WO2002089300A1
WO2002089300A1 PCT/FR2002/001387 FR0201387W WO02089300A1 WO 2002089300 A1 WO2002089300 A1 WO 2002089300A1 FR 0201387 W FR0201387 W FR 0201387W WO 02089300 A1 WO02089300 A1 WO 02089300A1
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WO
WIPO (PCT)
Prior art keywords
shuttle
forming
involutes
clamp
parts
Prior art date
Application number
PCT/FR2002/001387
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French (fr)
Inventor
Robert Vincent
Original Assignee
Vincent Industrie
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Filing date
Publication date
Application filed by Vincent Industrie filed Critical Vincent Industrie
Publication of WO2002089300A1 publication Critical patent/WO2002089300A1/en

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/04—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of windings, prior to mounting into machines
    • H02K15/0435—Wound windings
    • H02K15/0442—Loop windings
    • H02K15/045—Form wound coils

Definitions

  • the present invention relates, in general, to automatic and semi-automatic machines for forming windings, obtained from blanks called “shuttles” because of their shape, stators and rotors of electric rotating machines, generators or motor cars.
  • This invention relates, more particularly, to a device fitted to such machines, and intended for the automatic forming of the so-called "developing" parts of the shuttles.
  • the shuttles in question usually consisting of copper bars, have a generally hexagonal, elongated shape.
  • they have two parallel elongated rectilinear parts, corresponding to the two largest sides of their elongated hexagonal shape, which take place respectively in two notches of the stator or of the rotor of the electric rotary machine concerned.
  • These windings also have other non-rectilinear, so-called “developing” parts, which are located outside the notches of the stator or of the rotor, and which provide the connection between the corresponding ends of the two parallel rectilinear parts of the windings. More particularly, the involutes are formed according to the
  • boring cylinder of the stator of the electric rotary machine, or according to a truncated cone whose small base is identical to the base of the boring cylinder of the stator (referring here to a stator winding).
  • the bore cylinder is defined, itself, as a cylinder centered on the axis of the electric rotary machine, and having a diameter equal to the diameter of a circle passing through the outer faces of the notch shims, on the inner side of the stator of the electric rotating machine.
  • known machines include, for forming involutes, devices which are independent of the forming tongs of the shuttle itself. They may be blade devices, against which the parts of the shuttle which will become the involutes are applied, the blades being arranged according to the profile to be given to the involutes (see the aforementioned document FR-1485486). In other embodiments, these are shoe devices, pushing and deforming the parts of the shuttles which will become the involutes - see the other aforementioned documents, in particular EP-0135483 (item 365) and EP-0222140 (item 216 and 226). In the case of document EP-0107314 (or its equivalent US 4964291), these are additional pliers, displaced by jacks oriented diagonally, these pliers gripping the parts of the shuttle which will become the involutes.
  • the current involute forming devices are independent of the shuttle forming clamps, these devices must have their own supports on the frame of the forming machines, as well than their own actuators, such as jacks for moving the hooves, which complicates and makes the machines more expensive.
  • the "independent" mounting of these involute forming devices means that they are located at a certain distance from the shuttle forming clamps, while the curvature of the involutes should begin as close as possible to the ends of the elongated rectilinear parts. of the shuttle, and this contributes to giving the involutes an inappropriate shape.
  • the present invention aims to avoid all the drawbacks previously exposed, and it therefore aims to provide a device for forming the involutes in a precise manner, directly obtaining the desired deformation, by simple means in their structure and operation , and avoiding long and tedious adjustments.
  • the subject of the invention is essentially a device for forming involutes of windings of electric rotating machines, on an automatic or semi-automatic machine for forming shuttles of the kind considered here, that is to say comprising two pairs of pliers serving to hold at their ends, and to separate from one another, the two straight parallel elongated parts of the shuttle to be formed, and also comprising members for holding each of the ends, or "eye ", of the shuttle, the device in question being characterized in that it comprises, for each involute to be formed in the extension of the elongated rectilinear parts of the shuttle, a shoe-type forming tool, made directly or indirectly integral with one of the clamps for holding the ends of the two elongated rectilinear parts of the shuttle, each shoe being mounted movable, relative to the corresponding clamp nte, between a retracted position and an active position located under a portion of the shuttle located just beyond said clamp, under the face of this shuttle portion which, in the final configuration of the involute
  • each involute forming shoe is pivotally connected to the corresponding clamp, or to the support of this clamp, by a pivot axis perpendicular to the initial plane of the shuttle, an actuator such as a jack being provided for pivoting the shoe relative to the clamp between its retracted position and its active position located under the portion of the shuttle located just beyond the clamp (on the "eye" side).
  • each involute forming shoe is slidably connected to the corresponding clamp, or to the support of this clamp, by means of the slide type, an actuator such as a cylinder being provided, in this case, to move the shoe in translation relative to the clamp between its retracted position and its active position located under the portion of the shuttle located just beyond the clamp (on the "eye" side).
  • the principle of the invention consists in providing, outside each clamp on the "eye" side of the shuttle, and in connection with this clamp, a shoe for forming involutes.
  • each shoe also deforms the shuttle, according to the radius of the bore cylinder, this in an automatic manner
  • involutes reduces the number of movements of the machine, and the number of actuators required, since the forming of involutes is carried out during the movement of the clamps, during the forming of the shuttle, being caused by this movement of the pliers.
  • the jacks or other actuators, necessary for moving the involute forming shoes between their retracted position and their active position, may be of low power and not very bulky, their function being only to move said shoes, and not to exert on them any thrust.
  • the subject of the invention is also, as such, a method for forming the involutes of windings of electric rotating machines, from blanks called “shuttles", in which the shuttles are deformed by removing one of the other the two parallel elongated rectilinear parts of the shuttle, and by rotating the cross section of one of the two rectilinear parts relative to the cross section of the other of these two rectilinear parts, the method being characterized by fact that the involutes are formed simultaneously with the relative pivoting of respective cross sections of the two elongated rectilinear parts of the shuttle, by a pressure exerted on the portions of this shuttle extending said elongated rectilinear parts, said pressure being exerted on the face of these portions of shuttle which, in the final involute configuration, will be located opposite the central axis of the machine t electric rotating.
  • the device previously defined, thus ensures the implementation of this process.
  • Figure 1 is a perspective view of an electric rotating machine winding produced in accordance with the present invention.
  • Figure 2 is a front view of a shuttle forming machine, provided with the involute forming device according to the invention
  • Figure 3 is a top view of the machine of Figure 2;
  • Figure 4 is a side view of this machine;
  • Figure 5 is a perspective view of the involute forming device, associated with a clamp, in a first embodiment;
  • Figure 6 is a perspective view of the involute forming device, associated with a clamp, in a second embodiment;
  • Figure 7 is a view similar to Figure 6, illustrating another position of the same involute forming device;
  • Figures 8 and 9 are diagrams illustrating, in two successive stages, the operation of the involute forming device according to the invention.
  • the winding 2 made of metallic conductive bars, in particular copper bars, comprises two parallel elongated rectilinear parts 3 and 4, of the same length, located opposite; these two rectilinear parts 3 and 4 are provided to take place, respectively, in two notches of the stater or of the rotor of the electric rotary machine concerned. Depending on the angular distance of these two notches, the respective cross sections of the two straight parts 3 and 4 are oriented differently from each other.
  • the winding 2 comprises, beyond the two rectilinear parts 3 and
  • the forming machine 11 comprises a first pair of pliers 12 and 13, intended to hold, by its two ends, the straight part 3 of the winding 2 to be formed.
  • This forming machine 11 also comprises a second pair of pliers 14 and 15, provided for holding, by its two ends, the other straight part 4 of the winding 2 to be formed.
  • Means actuators are provided to separate or bring one from the other the two pairs of pliers 12, 13 and 14, 15, and also to rotate each of these two pairs of pliers 12, 13 , and 14, 15.
  • the forming machine 11 also comprises, towards its two ends, two members 16 and 17 provided, respectively, for holding the first "eye” 9 and the second "eye” 10 of the shuttle, in other words of the two ends of this shuttle .
  • a clamp 12 comprises a clamp body 19, a fixed jaw 20 secured to the body of clamp 19, and a movable jaw 21 movable, relative to the clamp body 19, by means of an actuator 22, such as a controlled electric actuator, mounted on the clamp body 19.
  • the latter has two parallel lateral flanges 23 and 24, the flange 23 being located on the outside, or "eye" side.
  • This clamp 12 can be of the self-adapting type, that is to say that, when it is tightened controlled by the actuator 22, the relative position of the two jaws 20 and 21 automatically adapts to the section of the bars. copper or other to be tightened.
  • Each clamp such as the clamp 12 considered here, is associated with an involute forming device, generally designated by the reference 25.
  • This forming device 25 is located on the "eye" side of the corresponding clamp, and it found fixed against the lateral flange 23 located on the "eye" side of the clamp 12.
  • this device 25 comprises a
  • support 26 in the form of an elongated plate, fixed against the lateral flange 23 of the clamp body 19.
  • An arm 27 is pivotally mounted, about an axis 28, at the end of the support 26 located closest to the jaws 20 and 21 of clamp 12.
  • the pivoting arm 27 Towards its free end, the pivoting arm 27 carries a forming shoe 29. The end of the support 26, distant from the jaws 20 and 21 of the clamp
  • FIGS. 6 and 7. A second embodiment of the device 25 for developing involutes is shown in FIGS. 6 and 7.
  • the device 25 comprises, here again, a support 26 in the form of an elongated plate, fixed against the lateral flange 23 situated on the "eye" side. of the gripper body 19.
  • the support 26 comprises a slide 36, on which is mounted, movable in translation, a slide 37 which carries the forming shoe 29, oriented obliquely.
  • FIGS. 8 and 9 illustrate the operation of the involute forming device 25, previously described, operation which takes place within the framework of the overall operation of the forming machine 11 carrying out the winding 2.
  • the two pairs of pliers 12, 13 and 14, 15 have moved away from each other, so as to separate the two rectilinear parts from each other 3 and 4 of the shuttle during deformation, the latter remaining "flat".
  • the forming shoes 29 of the involute forming devices 25 have hitherto been kept in the retracted position.
  • the jacks 33 of the four involute forming devices 25 are actuated to move the shoes 29 of these devices 25 to their active position, that is to say a position in which the shoes 29 are brought under the portions of shuttle which are located just beyond each clamp 12 to 15, in other words just after the angle of the shuttle formed by the straight part 3 or 4 and the beginning of one of the parts 5 to 8 intended to become the involutes.
  • these parts 5 to 8 are still substantially straight.
  • the two pairs of pliers 12, 13 and 14, 15 describe a pivoting movement, one with respect to the other, while moving laterally and vertically, until that the center of rotation of each clamp is in relation to the central axis 38 of the stator or rotor of the electric rotating machine.
  • the respective cross sections of the two straight parts 3 and 4 of the shuttle are thus brought into their final relative orientation (as illustrated in FIG. 1 for the winding 2 finally obtained).
  • the shoes 29 act under the corresponding portions of the shuttle, and deform these portions in an automatic and regular manner, by pressure, said shoes 29 following the pivoting of the clamps 12 to 15 on which they are mounted.
  • the shape of the shoes 29 is chosen suitably, to form the involutes of desired geometric characteristics, these shoes 29 being advantageously designed as interchangeable tools.

Abstract

The invention concerns the shaping, on automatic or semi-automatic machines, coils of windings (2), obtained from blanks called bobbins , of rotating electrical machines. Said bobbins are deformed by spacing apart their two elongated rectilinear parts (3, 4) and by pivoting the cross-section of one of those two parts (3, 4) relative to that of the other. The coils (7, 8) are formed simultaneously with the relative pivoting of the cross-sections of said parts (3, 4). Therefor is provided a shoe-type shaping equipment (25, 29) secured to one of the grippers (13, 15) retaining the elongated rectilinear parts (3, 4) of the bobbin, each shoe (29) being mobile between a retracted position and an active position, wherein it is located beneath the portion of the bobbin which is just beyond the corresponding gripper (13, 15).

Description

Dispositif pour le formage des développantes d'enroulements de machines tournantes électriques Device for forming involutes of windings of electric rotating machines
La présente invention concerne, d'une façon générale, les machines automatiques et semi-automatiques pour le formage des enroulements, obtenus à partir d'ébauches dites "navettes" en raison de leur forme, des stators et rotors de machines tournantes électriques, génératrices ou motrices. Cette invention se rapporte, plus particulièrement, à un dispositif équipant de telles machines, et destiné au formage automatique des parties dites "développantes" des navettes.The present invention relates, in general, to automatic and semi-automatic machines for forming windings, obtained from blanks called "shuttles" because of their shape, stators and rotors of electric rotating machines, generators or motor cars. This invention relates, more particularly, to a device fitted to such machines, and intended for the automatic forming of the so-called "developing" parts of the shuttles.
Les navettes en question, constituées habituellement par des barres de cuivre, possèdent une forme générale hexagonale, allongée. Ainsi, elles présentent deux parties rectilignes allongées parallèles, correspondant aux deux plus grands côtés de leur forme hexagonale allongée, qui prennent place respectivement dans deux encoches du stator ou du rotor de la machine tournante électrique concernée. Ces enroulements possèdent aussi d'autres parties non rectilignes, dites "développantes", qui sont situées à l'extérieur des encoches du stator ou du rotor, et qui assurent la liaison entre les extrémités correspondantes des deux parties rectilignes parallèles des enroulements. Plus particulièrement, les développantes sont formées suivant leThe shuttles in question, usually consisting of copper bars, have a generally hexagonal, elongated shape. Thus, they have two parallel elongated rectilinear parts, corresponding to the two largest sides of their elongated hexagonal shape, which take place respectively in two notches of the stator or of the rotor of the electric rotary machine concerned. These windings also have other non-rectilinear, so-called "developing" parts, which are located outside the notches of the stator or of the rotor, and which provide the connection between the corresponding ends of the two parallel rectilinear parts of the windings. More particularly, the involutes are formed according to the
"cylindre d'alésage" du stator de la machine tournante électrique, ou suivant un tronc de cône dont la petite base est identique à la base du cylindre d'alésage du stator (en se référant ici à un enroulement statorique). Le cylindre d'alésage se définit, lui-même, comme un cylindre centré sur l'axe de la machine tournante électrique, et ayant un diamètre égal au diamètre d'un cercle passant ,par les faces extérieures des cales d'encoches, sur le côté intérieur du stator de la machine tournante électrique."boring cylinder" of the stator of the electric rotary machine, or according to a truncated cone whose small base is identical to the base of the boring cylinder of the stator (referring here to a stator winding). The bore cylinder is defined, itself, as a cylinder centered on the axis of the electric rotary machine, and having a diameter equal to the diameter of a circle passing through the outer faces of the notch shims, on the inner side of the stator of the electric rotating machine.
Pour le formage des navettes, il a déjà été proposé diverses machines automatiques ou semi-automatiques qui, dans leur principe général, comprennent deux paires de pinces, servant à maintenir par leurs extrémités, et à écarter l'une de l'autre, les deux parties rectilignes allongées de la navette, ces deux parties rectilignes se trouvant initialement très rapprochées. Ces machines comprennent aussi deux autres pinces ou organes analogues, qui maintiennent les deux extrémités opposées de la navette en cours de formage, chacune de ces extrémités étant désignée aussi comme "œil" de la navette. Des machines pour le formage de navettes, réalisées et fonctionnant selon ce principe, sont décrites par exemple par les documents FR-1485486, EP-0107314 (ou son équivalent US 4964291 ) , EP-0135483, EP-0222140 et WO-93/24984 (ou son équivalent EP-0597066). D'une manière générale, les machines connues comportent, pour le formage des développantes, des dispositifs qui sont indépendants des pinces de formage de la navette elle-même. Il peut s'agir de dispositifs à lames, contre lesquelles sont appliquées les parties de la navette qui deviendront les développantes, les lames étant disposées selon le profil à donner aux développantes (voir le document FR-1485486 précité). Dans d'autres réalisations, il s'agit de dispositifs à sabots, venant pousser et déformer les parties des navettes qui deviendront les développantes - voir les autres documents précités, en particulier EP-0135483 (repère 365) et EP-0222140 (repères 216 et 226). Dans le cas du document EP-0107314 (ou son équivalent US 4964291 ), il s'agit de pinces supplémentaires, déplacées par des vérins orientés en diagonale, ces pinces saisissant les parties de la navette qui deviendront les développantes.Various automatic or semi-automatic machines have already been proposed for forming the shuttles which, in their general principle, comprise two pairs of pliers, serving to hold at their ends, and to separate from one another, the two elongated rectilinear parts of the shuttle, these two rectilinear parts being initially very close together. These machines also include two other pliers or the like, which hold the two opposite ends of the shuttle being formed, each of these ends also being designated as the "eye" of the shuttle. Machines for forming shuttles, produced and operating according to this principle, are described for example by documents FR-1485486, EP-0107314 (or its equivalent US 4964291), EP-0135483, EP-0222140 and WO-93/24984 (or its equivalent EP-0597066). In general, known machines include, for forming involutes, devices which are independent of the forming tongs of the shuttle itself. They may be blade devices, against which the parts of the shuttle which will become the involutes are applied, the blades being arranged according to the profile to be given to the involutes (see the aforementioned document FR-1485486). In other embodiments, these are shoe devices, pushing and deforming the parts of the shuttles which will become the involutes - see the other aforementioned documents, in particular EP-0135483 (item 365) and EP-0222140 (item 216 and 226). In the case of document EP-0107314 (or its equivalent US 4964291), these are additional pliers, displaced by jacks oriented diagonally, these pliers gripping the parts of the shuttle which will become the involutes.
Ces dispositifs ont tous la particularité d'exercer la poussée de formage de la développante parallèlement au plan moyen de la navette, par exemple parallèlement à l'axe longitudinal de la navette, et non pas perpendiculairement à ce plan, c'est-à-dire suivant une direction radiale par rapport à la courbure à obtenir. Cette poussée n'étant pas perpendiculaire à la partie à déformer, la force à exercer pour former la développante est importante, et la déformation obtenue n'est pas celle souhaitée. En particulier, la forme obtenue pour la développante ne la plaçant pas sur leThese devices all have the particularity of exerting the shaping thrust of the involute parallel to the mean plane of the shuttle, for example parallel to the longitudinal axis of the shuttle, and not perpendicular to this plane, that is to say say in a radial direction with respect to the curvature to be obtained. This thrust is not perpendicular to the part to be deformed, the force to be exerted to form the involute is significant, and the deformation obtained is not that desired. In particular, the shape obtained for the involute does not place it on the
, cylindre d'alésage (tel que défini plus haut), une finition du formage est nécessaire, par une intervention manuelle difficile, fastidieuse et réalisée de façon empirique. Cette intervention manuelle peut détériorer l'isolant électrique extérieur des barres de cuivre formant les navettes. Par ailleurs, les outillages utilisés jusqu'à présent pour former les développantes nécessitent des réglages longs et fastidieux. Tel est le cas, notamment, pour le positionnement des lames, dans un dispositif selon le document FR-1485486 précité., bore cylinder (as defined above), a finishing of the forming is necessary, by a difficult manual intervention, tedious and carried out empirically. This manual intervention can deteriorate the external electrical insulation of the copper bars forming the shuttles. Furthermore, the tools used until now to form the involutes require long and tedious adjustments. This is the case, in particular, for the positioning of the blades, in a device according to the aforementioned document FR-1485486.
Enfin, les dispositifs actuels de formage de développantes étant indépendants des pinces de formage de la navette, ces dispositifs doivent comporter leurs propres supports sur le bâti des machines de formage, ainsi que leurs propres actionneurs, tels que vérins de déplacement des sabots, ce qui complique et renchérit les machines. De plus, le montage "indépendant" de ces dispositifs de formage des développantes conduit à les situer à une certaine distance des pinces de formage de la navette, alors que la courbure des développantes devrait s'amorcer au plus près des extrémités des parties rectilignes allongées de la navette, et ceci contribue à donner aux développantes une forme inappropriée. Il en est de même dans le cas du document US 4450708, dans lequel les dispositifs de formage des développantes (avec système complexe de réglage et d'orientation) sont fixés aux pinces qui maintiennent les extrémités rapportées de la navette, ce qui les éloigne des autres pinces qui maintiennent les extrémités des parties rectilignes de la navette.Finally, since the current involute forming devices are independent of the shuttle forming clamps, these devices must have their own supports on the frame of the forming machines, as well than their own actuators, such as jacks for moving the hooves, which complicates and makes the machines more expensive. In addition, the "independent" mounting of these involute forming devices means that they are located at a certain distance from the shuttle forming clamps, while the curvature of the involutes should begin as close as possible to the ends of the elongated rectilinear parts. of the shuttle, and this contributes to giving the involutes an inappropriate shape. It is the same in the case of document US 4450708, in which the involute forming devices (with complex adjustment and orientation system) are fixed to the clamps which hold the attached ends of the shuttle, which removes them from the other clamps which hold the ends of the straight parts of the shuttle.
La présente invention vise à éviter tous les inconvénients précédemment exposés, et elle a donc pour but de fournir un dispositif permettant de former les développantes d'une manière précise, en obtenant directement la déformation souhaitée, par des moyens simples dans leur structure et leur fonctionnement, et évitant des réglages longs et fastidieux.The present invention aims to avoid all the drawbacks previously exposed, and it therefore aims to provide a device for forming the involutes in a precise manner, directly obtaining the desired deformation, by simple means in their structure and operation , and avoiding long and tedious adjustments.
A cet effet, l'invention a essentiellement pour objet un dispositif pour le formage de développantes d'enroulements de machines tournantes électriques, sur une machine automatique ou semi-automatique à former les navettes du genre ici considéré, c'est-à-dire comprenant deux paires de pinces servant à maintenir par leurs extrémités, et à écarter l'une de l'autre, les deux parties rectilignes allongées parallèles de la navette à former, et comprenant aussi des organes de maintien de chacune des extrémités, ou "œil", de la navette, le dispositif en question étant caractérisé par le fait qu'il comprend, pour chaque développante à former dans le prolongement des parties rectilignes allongées de la navette, un outillage de formage du genre sabot, rendu solidaire directement ou indirectement de l'une des pinces de maintien des extrémités des deux parties rectilignes allongées de la navette, chaque sabot étant monté déplaçable, relativement à la pince correspondante, entre une position escamotée et une position active située sous une portion de la navette se situant juste au-delà de ladite pince, sous la face de cette partie de navette qui, dans la configuration définitive de la développante, se situera face à l'axe central de la machine tournante électrique, de telle sorte que le mouvement rotatif des deux paires de pinces pour le formage final de la navette, pendant ou après écartement de ses deux parties rectilignes allongées, s'accompagne d'une déformation des portions de cette navette se trouvant au contact des sabots, pour former ainsi les développantes.To this end, the subject of the invention is essentially a device for forming involutes of windings of electric rotating machines, on an automatic or semi-automatic machine for forming shuttles of the kind considered here, that is to say comprising two pairs of pliers serving to hold at their ends, and to separate from one another, the two straight parallel elongated parts of the shuttle to be formed, and also comprising members for holding each of the ends, or "eye ", of the shuttle, the device in question being characterized in that it comprises, for each involute to be formed in the extension of the elongated rectilinear parts of the shuttle, a shoe-type forming tool, made directly or indirectly integral with one of the clamps for holding the ends of the two elongated rectilinear parts of the shuttle, each shoe being mounted movable, relative to the corresponding clamp nte, between a retracted position and an active position located under a portion of the shuttle located just beyond said clamp, under the face of this shuttle portion which, in the final configuration of the involute, will be located facing the central axis of the electric rotary machine, so that the rotary movement of the two pairs of pliers for the final forming of the shuttle, during or after separation of its two straight parts elongated, is accompanied by a deformation of the portions of this shuttle being in contact with the hooves, thereby forming the involutes.
Selon une première forme de réalisation du dispositif objet de l'invention, chaque sabot de formage des développantes est lié de façon pivotante à la pince correspondante, ou au support de cette pince, par un axe de pivotement perpendiculaire au plan initial de la navette, un actionneur tel que vérin étant prévu pour faire pivoter le sabot relativement à la pince entre sa position escamotée et sa position active située sous la portion de la navette se situant juste au-delà de la pince (sur le côté "œil"). Selon une deuxième forme de réalisation du dispositif objet de l'invention, chaque sabot de formage des développantes est lié de façon coulissante à la pince correspondante, ou au support de cette pince, par des moyens du genre glissière, un actionneur tel que vérin étant prévu, dans ce cas, pour déplacer en translation le sabot relativement à la pince entre sa position escamotée et sa position active située sous la portion de la navette se situant juste au-delà de la pince (sur le côté "œil").According to a first embodiment of the device which is the subject of the invention, each involute forming shoe is pivotally connected to the corresponding clamp, or to the support of this clamp, by a pivot axis perpendicular to the initial plane of the shuttle, an actuator such as a jack being provided for pivoting the shoe relative to the clamp between its retracted position and its active position located under the portion of the shuttle located just beyond the clamp (on the "eye" side). According to a second embodiment of the device which is the subject of the invention, each involute forming shoe is slidably connected to the corresponding clamp, or to the support of this clamp, by means of the slide type, an actuator such as a cylinder being provided, in this case, to move the shoe in translation relative to the clamp between its retracted position and its active position located under the portion of the shuttle located just beyond the clamp (on the "eye" side).
Ainsi, le principe de l'invention consiste à prévoir, à l'extérieur de chaque pince sur le côté "œil" de la navette, et en liaison avec cette pince, un sabot de formage des développantes. Après le préformage des ébauches de navettes par le déplacement des pinces, qui écartent les deux parties rectilignes allongées de chaque navette à former, les sabots (jusque là escamotés) sont amenés dans leurs positions actives, sous les portions de navette devant constituer les amorces des développantes. Les pinces sont alors actionnées en rotation, pour le formage final de la navette consistant à faire pivoter les sections transversales des deux parties rectilignes allongées,Thus, the principle of the invention consists in providing, outside each clamp on the "eye" side of the shuttle, and in connection with this clamp, a shoe for forming involutes. After the preforms of the shuttle blanks are displaced by the movement of the clamps, which separate the two elongated rectilinear parts of each shuttle to be formed, the hooves (hitherto retracted) are brought into their active positions, under the shuttle portions which constitute the primers of the involutes. The clamps are then actuated in rotation, for the final forming of the shuttle consisting in rotating the cross sections of the two elongated rectilinear parts,
' en rapport avec la position de l'axe central de la machine tournante électrique. ' in relation to the position of the central axis of the electric rotary machine.
Au cours de ce formage, chaque sabot, de forme appropriée, déforme aussi la navette, suivant le rayon du cylindre d'alésage, ceci d'une manière automatiqueDuring this forming, each shoe, of appropriate shape, also deforms the shuttle, according to the radius of the bore cylinder, this in an automatic manner
(du simple fait de la rotation des pinces) et régulière. Ce mode de formage des développantes diminue le nombre de mouvements de la machine, et le nombre d'actionneurs nécessaires, puisque le formage des développantes est effectué pendant le mouvement des pinces, lors du formage de la navette, en étant provoqué par ce mouvement des pinces. Les vérins ou autres actionneurs, nécessaires au déplacement des sabots de formage des développantes entre leur position escamotée et leur position active, peuvent être de faible puissance et peu volumineux, leur fonction étant uniquement de déplacer lesdits sabots, et non d'exercer sur ceux-ci une quelconque poussée.(simply by rotating the pliers) and regular. This form of involutes reduces the number of movements of the machine, and the number of actuators required, since the forming of involutes is carried out during the movement of the clamps, during the forming of the shuttle, being caused by this movement of the pliers. The jacks or other actuators, necessary for moving the involute forming shoes between their retracted position and their active position, may be of low power and not very bulky, their function being only to move said shoes, and not to exert on them any thrust.
On notera aussi que le principe même de l'invention conduit à placer les sabots de formage des développantes à faible distance des pinces, sous la portion de la navette située juste après les extrémités de chaque partie rectiligne de cette navette, donc au début de chaque développante, là où il convient de l'amorcer correctement.It will also be noted that the very principle of the invention results in placing the involute forming shoes a short distance from the clamps, under the portion of the shuttle located just after the ends of each straight portion of this shuttle, therefore at the start of each developing, where it should be started properly.
L'invention a aussi pour objet, en tant que tel, un procédé pour le formage des développantes d'enroulements de machines tournantes électriques, à partir d'ébauches dites "navettes", dans lequel les navettes sont déformées en écartant l'une de l'autre les deux parties rectilignes allongées parallèles de la navette, et en faisant pivoter la section transversale de l'une des deux parties rectilignes par rapport à la section transversale de l'autre de ces deux parties rectilignes, le procédé étant caractérisé par le fait que les développantes sont formées simultanément au pivotement relatif de sections transversales respectives des deux parties rectilignes allongées de la navette, par une pression exercée sur les portions de cette navette prolongeant lesdites parties rectilignes allongées, ladite pression étant exercée sur la face de ces portions de navette qui, dans la configuration définitive de la développante, se situera face à l'axe central de la machine tournante électrique. Le dispositif, précédemment défini, assure ainsi la mise en œuvre de ce procédé.The subject of the invention is also, as such, a method for forming the involutes of windings of electric rotating machines, from blanks called "shuttles", in which the shuttles are deformed by removing one of the other the two parallel elongated rectilinear parts of the shuttle, and by rotating the cross section of one of the two rectilinear parts relative to the cross section of the other of these two rectilinear parts, the method being characterized by fact that the involutes are formed simultaneously with the relative pivoting of respective cross sections of the two elongated rectilinear parts of the shuttle, by a pressure exerted on the portions of this shuttle extending said elongated rectilinear parts, said pressure being exerted on the face of these portions of shuttle which, in the final involute configuration, will be located opposite the central axis of the machine t electric rotating. The device, previously defined, thus ensures the implementation of this process.
L'invention sera mieux comprise à l'aide de la description qui suit, en référence au dessin schématique annexé représentant, à titre d'exemples, des formes de réalisation de ce dispositif pour le formage des développantes d'enroulements de machines tournantes électriques, et illustrant leThe invention will be better understood with the aid of the description which follows, with reference to the appended diagrammatic drawing representing, by way of examples, embodiments of this device for forming involutes of windings of electric rotating machines, and illustrating the
' fonctionnement de ce dispositif : 'Operation of this device:
Figure 1 est une vue en perspective d'un enroulement de machine tournante électrique réalisé conformément à la présente invention ;Figure 1 is a perspective view of an electric rotating machine winding produced in accordance with the present invention;
Figure 2 est une vue de face d'une machine à former les navettes, pourvue du dispositif de formage des développantes selon l'invention ;Figure 2 is a front view of a shuttle forming machine, provided with the involute forming device according to the invention;
Figure 3 est une vue de dessus de la machine de la figure 2 ; Figure 4 est une vue de côté de cette machine ; Figure 5 est une vue en perspective du dispositif de formage des développantes, associé à une pince, dans une première forme de réalisation ; Figure 6 est une vue en perspective du dispositif de formage des développantes, associé à une pince, dans une deuxième forme de réalisation ; Figure 7 est une vue similaire à la figure 6, illustrant une autre position du même dispositif de formage des développantes ;Figure 3 is a top view of the machine of Figure 2; Figure 4 is a side view of this machine; Figure 5 is a perspective view of the involute forming device, associated with a clamp, in a first embodiment; Figure 6 is a perspective view of the involute forming device, associated with a clamp, in a second embodiment; Figure 7 is a view similar to Figure 6, illustrating another position of the same involute forming device;
Figures 8 et 9 sont des schémas illustrant, dans deux étapes successives, le fonctionnement du dispositif de formage des développantes selon l'invention.Figures 8 and 9 are diagrams illustrating, in two successive stages, the operation of the involute forming device according to the invention.
En se référant d'abord à la figure 1 , un enroulement 2 de machine tournante électrique est représenté. L'enroulement 2, réalisé en barres conductrices métalliques, notamment des barres de cuivre, comprend deux parties rectilignes allongées parallèles 3 et 4, de même longueur, situées en vis-à-vis ; ces deux parties rectilignes 3 et 4 sont prévues pour prendre place, respectivement, dans deux encoches du stater ou du rotor de la machine tournante électrique concernée. En fonction de la distance angulaire de ces deux encoches, les sections transversales respectives des deux parties rectilignes 3 et 4 sont orientées différemment l'une de l'autre. L'enroulement 2 comporte, au-delà des deux parties rectilignes 3 etReferring first to FIG. 1, a winding 2 of an electric rotary machine is shown. The winding 2, made of metallic conductive bars, in particular copper bars, comprises two parallel elongated rectilinear parts 3 and 4, of the same length, located opposite; these two rectilinear parts 3 and 4 are provided to take place, respectively, in two notches of the stater or of the rotor of the electric rotary machine concerned. Depending on the angular distance of these two notches, the respective cross sections of the two straight parts 3 and 4 are oriented differently from each other. The winding 2 comprises, beyond the two rectilinear parts 3 and
4, quatre parties non rectilignes 5, 6, 7 et 8 dites "développantes", qui prennent place à l'extérieur des encoches du stator ou du rotor, ces développantes 5 à 8 assurant la liaison entre les parties rectilignes 3 et 4. Plus particulièrement, vers une extrémité de l'enroulement 2, les deux parties rectilignes 3 et 4 sont reliées par les deux développantes 5 et 6, elles-mêmes raccordées entre elles par une partie 9 à forte courbure, dite "œil". De manière symétrique, vers l'autre extrémité de l'enroulement 2, les deux parties rectilignes 3 et 4 sont reliées par les deux autres développantes 7 et 8, elles-mêmes raccordées entre elles par une dernière partie 10 à forte courbure, ou "œil". Un tel enroulement 2 est formé, à partir d'une ébauche dite4, four non-rectilinear parts 5, 6, 7 and 8 called "involutes", which take place outside the notches of the stator or of the rotor, these involutes 5 to 8 ensuring the connection between the rectilinear parts 3 and 4. More in particular, towards one end of the winding 2, the two rectilinear parts 3 and 4 are connected by the two involutes 5 and 6, themselves connected to each other by a part 9 with strong curvature, called "eye". Symmetrically, towards the other end of the winding 2, the two rectilinear parts 3 and 4 are connected by the two other involutes 7 and 8, themselves connected together by a last part 10 with strong curvature, or " eye". Such a winding 2 is formed, from a so-called blank
"navette", de configuration plane et d'allure hexagonale, sur une machine de formage représentée très schématiquement sur les figures 2 et 4, et désignée dans son ensemble par le repère 11. A titre de simplification, dans toute la suite (comme dans ce qui précède), on continue de désigner comme "navette" l'enroulement au cours de ses phases successives de formage, jusqu'à l'obtention de l'enroulement 2 dans son état final."shuttle", of flat configuration and hexagonal in appearance, on a forming machine shown very diagrammatically in FIGS. 2 and 4, and designated as a whole by the reference mark 11. By way of simplification, in the following (as in above), the winding is continued to be designated as "shuttle" during its successive forming phases, until winding 2 is obtained in its final state.
La machine de formage 11 comprend une première paire de pinces 12 et 13, prévues pour maintenir, par ses deux extrémités, la partie rectiligne 3 de l'enroulement 2 à former. Cette machine de formage 11 comprend aussi une deuxième paire de pinces 14 et 15, prévues pour maintenir, par ses deux extrémités, l'autre partie rectiligne 4 de l'enroulement 2 à former. Des moyens d'actionnement, non représentés en détail, sont prévus pour écarter ou rapprocher l'une de l'autre les deux paires de pinces 12, 13 et 14, 15, et aussi pour faire pivoter chacune de ces deux paires de pinces 12, 13, et 14, 15.The forming machine 11 comprises a first pair of pliers 12 and 13, intended to hold, by its two ends, the straight part 3 of the winding 2 to be formed. This forming machine 11 also comprises a second pair of pliers 14 and 15, provided for holding, by its two ends, the other straight part 4 of the winding 2 to be formed. Means actuators, not shown in detail, are provided to separate or bring one from the other the two pairs of pliers 12, 13 and 14, 15, and also to rotate each of these two pairs of pliers 12, 13 , and 14, 15.
La machine de formage 11 comporte encore, vers ses deux extrémités, deux organes 16 et 17 prévus, respectivement, pour le maintien du premier "œil" 9 et du second "œil" 10 de la navette, autrement dit des deux extrémités de cette navette.The forming machine 11 also comprises, towards its two ends, two members 16 and 17 provided, respectively, for holding the first "eye" 9 and the second "eye" 10 of the shuttle, in other words of the two ends of this shuttle .
Les pinces 12 à 15 et les organes de maintien 16 et 17 sont montés sur le bâti 18 de la machine 11. En se référant à la figure 5, une pince 12 comprend un corps de pince 19, un mors fixe 20 solidaire du corps de pince 19, et un mors mobile 21 déplaçable, relativement au corps de pince 19, au moyen d'un actionneur 22, tel qu'un vérin électrique asservi, monté sur le corps de pince 19. Ce dernier possède deux flasques latéraux parallèles 23 et 24, le flasque 23 étant situé du côté extérieur, ou côté "œil". Cette pince 12 peut être de type auto-adaptatif, c'est-à-dire que, lors de son serrage commandé par l'actionneur 22, la position relative des deux mors 20 et 21 s'adapte automatiquement à la section des barres de cuivre ou autre à serrer.The clamps 12 to 15 and the holding members 16 and 17 are mounted on the frame 18 of the machine 11. With reference to FIG. 5, a clamp 12 comprises a clamp body 19, a fixed jaw 20 secured to the body of clamp 19, and a movable jaw 21 movable, relative to the clamp body 19, by means of an actuator 22, such as a controlled electric actuator, mounted on the clamp body 19. The latter has two parallel lateral flanges 23 and 24, the flange 23 being located on the outside, or "eye" side. This clamp 12 can be of the self-adapting type, that is to say that, when it is tightened controlled by the actuator 22, the relative position of the two jaws 20 and 21 automatically adapts to the section of the bars. copper or other to be tightened.
A chaque pince, telle que la pince 12 ici considérée, il est associé un dispositif de formage des développantes, désigné globalement par la référence 25. Ce dispositif de formage 25 est situé sur le côté "œil" de la pince correspondante, et il se trouve fixé contre le flasque latéral 23 situé du côté "oeil" de la pince 12.Each clamp, such as the clamp 12 considered here, is associated with an involute forming device, generally designated by the reference 25. This forming device 25 is located on the "eye" side of the corresponding clamp, and it found fixed against the lateral flange 23 located on the "eye" side of the clamp 12.
Dans une première forme de réalisation du dispositif 25 de formage des développantes, représentée sur la figure 5, ce dispositif 25 comprend unIn a first embodiment of the involute forming device 25, shown in FIG. 5, this device 25 comprises a
, support 26 en forme de plaque allongée, fixé contre le flasque latéral 23 du corps de pince 19. Un bras 27 est monté pivotant, autour d'un axe 28, à l'extrémité du support 26 située le plus près des mors 20 et 21 de la pince 12., support 26 in the form of an elongated plate, fixed against the lateral flange 23 of the clamp body 19. An arm 27 is pivotally mounted, about an axis 28, at the end of the support 26 located closest to the jaws 20 and 21 of clamp 12.
Vers son extrémité libre, le bras pivotant 27 porte un sabot de formage 29. L'extrémité du support 26, éloignée des mors 20 et 21 de la pinceTowards its free end, the pivoting arm 27 carries a forming shoe 29. The end of the support 26, distant from the jaws 20 and 21 of the clamp
12, porte une chape 30 sur laquelle est articulé, autour d'un axe 31 , le corps 32 d'un vérin 33. Ce vérin 33 possède une tige 34, dont l'extrémité est articulée, autour d'un autre axe 35, sur le bras pivotant 27. Ainsi, l'actionnement du vérin 33 provoque le pivotement du bras 27, autour de l'axe 28, et permet de déplacer le sabot de formage 29 entre une position escamotée et une position active. Une deuxième forme de réalisation du dispositif 25 de formage des développantes est représentée sur les figures 6 et 7. Le dispositif 25 comprend, ici encore, un support 26 en forme de plaque allongée, fixé contre le flasque latéral 23 situé du côté "œil" du corps de pince 19. Le support 26 comporte une glissière 36, sur laquelle est monté, mobile en translation, un coulisseau 37 qui porte le sabot de formage 29, orienté obliquement.12, carries a yoke 30 on which is articulated, around an axis 31, the body 32 of an actuator 33. This actuator 33 has a rod 34, the end of which is articulated, around another axis 35, on the pivoting arm 27. Thus, the actuation of the jack 33 causes the arm 27 to pivot about the axis 28, and makes it possible to move the forming shoe 29 between a retracted position and an active position. A second embodiment of the device 25 for developing involutes is shown in FIGS. 6 and 7. The device 25 comprises, here again, a support 26 in the form of an elongated plate, fixed against the lateral flange 23 situated on the "eye" side. of the gripper body 19. The support 26 comprises a slide 36, on which is mounted, movable in translation, a slide 37 which carries the forming shoe 29, oriented obliquely.
L'extrémité du support 26, éloignée des mors 20 et 21 de la pince 12, porte une chape 30, sur laquelle est articulé, autour d'un axe 31 , le corps 32 d'un vérin 33. Ce vérin 33 possède une tige 34, dont l'extrémité est articulée, autour d'un dernier axe 35, sur le coulisseau 37. Ainsi, l'actionnement du vérin 33 provoque le déplacement en translation du coulisseau 37, guidé par la glissière 36, entre une position escamotée, c'est-à-dire reculée par rapport aux mors 20 et 21 de la pince 12 (voir figure 6), et une position active, plus avancée en direction des mors 20 et 21 (voir figure 7). Les figures 8 et 9 illustrent le fonctionnement du dispositif 25 de formage des développantes, précédemment décrit, fonctionnement qui intervient dans le cadre du fonctionnement d'ensemble de la machine de formage 11 réalisant l'enroulement 2.The end of the support 26, distant from the jaws 20 and 21 of the clamp 12, carries a yoke 30, on which is articulated, around an axis 31, the body 32 of a jack 33. This jack 33 has a rod 34, the end of which is articulated around a last axis 35, on the slide 37. Thus, the actuation of the jack 33 causes the slide 37 to move in translation, guided by the slide 36, between a retracted position, that is to say moved back relative to the jaws 20 and 21 of the clamp 12 (see FIG. 6), and an active position, more advanced in the direction of the jaws 20 and 21 (see FIG. 7). FIGS. 8 and 9 illustrate the operation of the involute forming device 25, previously described, operation which takes place within the framework of the overall operation of the forming machine 11 carrying out the winding 2.
A l'étape de fonctionnement illustrée par la figure 8, les deux paires de pinces 12, 13 et 14, 15 se sont éloignées l'une de l'autre, de manière à écarter l'une de l'autre les deux parties rectilignes 3 et 4 de la navette en cours de déformation, celle-ci restant "à plat". Les sabots de formage 29 des dispositifs 25 de formage des développantes sont, jusque là, maintenus en position escamotée. A ce moment, les vérins 33 des quatre dispositifs 25 de formage des développantes sont actionnés, pour déplacer les sabots 29 de ces dispositifs 25 vers leur position active, c'est-à-dire une position dans laquelle les sabots 29 sont amenés sous les portions de navette qui se situent juste au- delà de chaque pince 12 à 15, autrement dit juste après l'angle de la navette formé par la partie rectiligne 3 ou 4 et le début de l'une des parties 5 à 8 destinées à devenir les développantes. A ce stade, ces parties 5 à 8 sont encore sensiblement rectilignes.In the operating step illustrated in FIG. 8, the two pairs of pliers 12, 13 and 14, 15 have moved away from each other, so as to separate the two rectilinear parts from each other 3 and 4 of the shuttle during deformation, the latter remaining "flat". The forming shoes 29 of the involute forming devices 25 have hitherto been kept in the retracted position. At this time, the jacks 33 of the four involute forming devices 25 are actuated to move the shoes 29 of these devices 25 to their active position, that is to say a position in which the shoes 29 are brought under the portions of shuttle which are located just beyond each clamp 12 to 15, in other words just after the angle of the shuttle formed by the straight part 3 or 4 and the beginning of one of the parts 5 to 8 intended to become the involutes. At this stage, these parts 5 to 8 are still substantially straight.
Dans la phase suivante, illustrée par la figure 9, les deux paires de pinces 12, 13 et 14, 15 décrivent un mouvement pivotant, l'une par rapport à l'autre, tout en se déplaçant latéralement et verticalement, jusqu'à ce que le centre de rotation de chaque pince soit en rapport avec l'axe central 38 du stator ou rotor de la machine tournante électrique. Les sections transversales respectives des deux parties rectilignes 3 et 4 de la navette sont ainsi amenées dans leur orientation relative définitive (telle qu'illustrée sur la figure 1 pour l'enroulement 2 finalement obtenu). Au cours de cette phase de "torsion" de la navette, les sabots 29 agissent sous les portions correspondantes de la navette, et déforment ces portions d'une façon automatique et régulière, par pression, lesdits sabots 29 suivant le pivotement des pinces 12 à 15 sur lesquelles ils sont montés.In the next phase, illustrated in FIG. 9, the two pairs of pliers 12, 13 and 14, 15 describe a pivoting movement, one with respect to the other, while moving laterally and vertically, until that the center of rotation of each clamp is in relation to the central axis 38 of the stator or rotor of the electric rotating machine. The respective cross sections of the two straight parts 3 and 4 of the shuttle are thus brought into their final relative orientation (as illustrated in FIG. 1 for the winding 2 finally obtained). During this phase of "twisting" of the shuttle, the shoes 29 act under the corresponding portions of the shuttle, and deform these portions in an automatic and regular manner, by pressure, said shoes 29 following the pivoting of the clamps 12 to 15 on which they are mounted.
On notera que, durant cette dernière phase, pour que la navette puisse se déformer de la manière souhaitée, les organes de maintien 16 et 17 de chaque "œil" 9, 10 peuvent se déplacer dans le sens longitudinal de la machine 11 , de manière à absorber les effets de la déformation.It will be noted that, during this last phase, so that the shuttle can deform in the desired manner, the holding members 16 and 17 of each "eye" 9, 10 can move in the longitudinal direction of the machine 11, so to absorb the effects of deformation.
La forme des sabots 29 est choisie de façon convenable, pour former les développantes de caractéristiques géométriques désirées, ces sabots 29 étant avantageusement conçus comme des outils interchangeables.The shape of the shoes 29 is chosen suitably, to form the involutes of desired geometric characteristics, these shoes 29 being advantageously designed as interchangeable tools.
En position finale, telle que représentée sur la figure 9, les sabotsIn the final position, as shown in Figure 9, the shoes
29 ont formé les développantes 5 à 8. Après desserrage des pinces 12 à 15, on récupère ainsi un enroulement 2 définitif, tel que celui montré sur la figure 1.29 formed the involutes 5 to 8. After loosening the clamps 12 to 15, a final winding 2 is thus recovered, such as that shown in FIG. 1.
L'on ne s'éloignerait pas du cadre de la présente invention, telle que définie dans les revendications annexées :We would not depart from the scope of the present invention, as defined in the appended claims:
- en modifiant les formes de détail des sabots de formage et de leurs supports ;- by modifying the detail forms of the forming shoes and their supports;
- en remplaçant les vérins par tous actionneurs capables de déplacer les sabots de formage entre une position escamotée et une position active ;- by replacing the jacks with all actuators capable of moving the forming shoes between a retracted position and an active position;
- en montant le dispositif de formage des développantes sur des pinces de construction différente de celle ici décrite et illustrée ;- by mounting the involute forming device on clamps of construction different from that described and illustrated here;
- en modifiant le processus de déformation de la navette, notamment en réalisant simultanément (et non pas successivement) l'écartement des deux parties rectilignes, et le pivotement relatif des sections transversales respectives de ces parties rectilignes, accompagné du formage des développantes. - By modifying the deformation process of the shuttle, in particular by carrying out simultaneously (and not successively) the separation of the two straight parts, and the relative pivoting of the respective cross sections of these straight parts, accompanied by the shaping of the involutes.

Claims

REVENDICATIONS
1 - Dispositif pour le formage des développantes d'enroulements (2), obtenus à partir d'ébauches dites "navettes", de machines tournantes électriques, sur une machine automatique ou semi-automatique (11 ) à former les navettes comprenant deux paires de pinces (12, 13, 14, 15) servant à maintenir par leurs extrémités, et à écarter l'une de l'autre, les deux parties rectilignes allongées parallèles (3, 4) de la navette à former, et comprenant aussi des organes (16, 17) de maintien de chacune des extrémités, ou "œil" (9, 10), de la navette, caractérisé en qu'il comprend, pour chaque développante (5, 6, 7, 8) à former dans le prolongement des parties rectilignes allongées (3, 4) de la navette, un outillage de formage (25, 29) du genre sabot, rendu solidaire directement ou indirectement de l'une des pinces de maintien (12, 13, 14, 15) des extrémités des deux parties rectilignes allongées (3, 4) de la navette, chaque sabot (29) étant monté déplaçable, relativement à la pince correspondante, entre une position escamotée et une position active située sous une portion de la navette se situant juste au-delà de ladite pince (12, 13, 14, 15), sous la face de cette portion de navette qui, dans la configuration définitive de la développante (5, 6, 7, 8), se situera face à l'axe central (38) de la machine tournante électrique, de telle sorte que le mouvement rotatif des deux paires de pinces (12, 13, 14, 15) pour le formage final de la navette, pendant ou après écartement de ses deux parties rectilignes allongées (3, 4), s'accompagne d'une déformation des portions de cette navette se trouvant au contact des sabots (29), pour former ainsi les développantes (5, 6, 7, 8). 2 - Dispositif pour le formage des développantes selon la1 - Device for forming involutes of windings (2), obtained from blanks called "shuttles", from rotary electric machines, on an automatic or semi-automatic machine (11) for forming shuttles comprising two pairs of clamps (12, 13, 14, 15) serving to hold at their ends, and to separate from one another, the two straight parallel elongated parts (3, 4) of the shuttle to be formed, and also comprising members (16, 17) for holding each of the ends, or "eye" (9, 10), of the shuttle, characterized in that it comprises, for each involute (5, 6, 7, 8) to be formed in the extension elongated rectilinear parts (3, 4) of the shuttle, a shoe-like forming tool (25, 29), made directly or indirectly integral with one of the holding clamps (12, 13, 14, 15) of the ends of the two elongated rectilinear parts (3, 4) of the shuttle, each shoe (29) being mounted displaceable, relatively to the corresponding clamp, between a retracted position and an active position located under a portion of the shuttle lying just beyond said clamp (12, 13, 14, 15), under the face of this portion of shuttle which, in the final configuration of the involute (5, 6, 7, 8), will be located opposite the central axis (38) of the electric rotary machine, so that the rotary movement of the two pairs of pliers (12, 13, 14, 15) for the final forming of the shuttle, during or after separation of its two elongated rectilinear parts (3, 4), is accompanied by a deformation of the portions of this shuttle being in contact with the shoes (29), to form the involutes (5, 6, 7, 8). 2 - Device for forming involutes according to the
' revendication 1 , caractérisé en ce que chaque sabot (29) de formage des développantes (5, 6, 7, 8) est lié de façon pivotante à la pince (12, 13, 14, 15) correspondante, ou au support de cette pince, par un axe de pivotement (28) perpendiculaire au plan initial de la navette, un actionneur tel que vérin (33) étant prévu pour faire pivoter le sabot (29) relativement à la pince, entre sa position escamotée et sa position active située sous la portion de la navette se situant juste au-delà de la pince (12, 13, 14, 15), sur le côté "œil" (9, 10). ' Claim 1, characterized in that each shoe (29) for shaping the involutes (5, 6, 7, 8) is pivotally connected to the corresponding clamp (12, 13, 14, 15), or to the support of this gripper, by a pivot axis (28) perpendicular to the initial plane of the shuttle, an actuator such as a cylinder (33) being provided to pivot the shoe (29) relative to the gripper, between its retracted position and its active position located under the portion of the shuttle located just beyond the clamp (12, 13, 14, 15), on the "eye" side (9, 10).
3 - Dispositif pour le formage des développantes selon la revendication 1 , caractérisé en ce que chaque sabot (29) de formage des développantes (5, 6, 7, 8) est lié de façon coulissante à la pince (12, 13, 14, 15) correspondante, ou au support de cette pince, par des moyens du genre glissière (36), un actionneur tel que vérin (33) étant prévu pour déplacer en translation le sabot (29) relativement à la pince, entre sa position escamotée et sa position active située sous la portion de la navette se situant juste au-delà de la pince (12, 13, 14, 15), sur le côté "œil" (9, 10). 4 - Dispositif pour le formage des développantes selon la revendication 2 ou 3, caractérisé en ce que l'axe de pivotement (28), ou la glissière de coulissement (36), de chaque sabot (29) de formage des développantes est situé sur un côté de la pince (12, 13, 14, 15) correspondante, plus particulièrement le côté tourné vers l'œil (9, 10) de la navette.3 - Device for forming involutes according to claim 1, characterized in that each shoe (29) for forming involutes (5, 6, 7, 8) is slidably connected to the clamp (12, 13, 14, 15) corresponding, or to the support of this clamp, by means of the kind slide (36), an actuator such as a jack (33) being provided to move the shoe (29) in translation relative to the clamp, between its retracted position and its active position located under the portion of the shuttle located just beyond of the pliers (12, 13, 14, 15), on the "eye" side (9, 10). 4 - Device for forming involutes according to claim 2 or 3, characterized in that the pivot axis (28), or the sliding slide (36), of each shoe (29) for forming involutes is located on one side of the corresponding clamp (12, 13, 14, 15), more particularly the side facing the eye (9, 10) of the shuttle.
5 - Procédé pour le formage des développantes d'enroulements de machines tournantes électriques, obtenus à partir d'ébauches dites "navettes", dans lequel les navettes sont déformées, en écartant l'une de l'autre les deux parties rectilignes allongées (34) parallèles de la navette, et en faisant pivoter la section transversale de l'une des deux parties rectilignes (3, 4) par rapport à la section transversale de l'autre de ces' deux parties rectilignes (3, 4) , caractérisé en ce que les développantes (5, 6, 7, 8) sont formées simultanément au pivotement relatif des sections transversales respectives des deux parties rectilignes allongées (3, 4) de la navette à former, par une pression exercée sur les parties de cette navette prolongeant lesdites parties rectilignes allongées (3, 4) , ladite pression étant exercée sur la face de ces portions de navette qui, dans la configuration définitive de la développante (5, 6, 7, 8), se situera face à l'axe central (38) de la machine tournante électrique. 5 - Process for forming the involutes of windings of electric rotating machines, obtained from blanks called "shuttles", in which the shuttles are deformed, by moving the two elongated rectilinear parts apart from one another (34 ) parallel to the shuttle, and by pivoting the cross section of one of the two straight parts (3, 4) relative to the cross section of the other of these ' two straight parts (3, 4), characterized in that the involutes (5, 6, 7, 8) are formed simultaneously with the relative pivoting of the respective cross sections of the two elongated rectilinear parts (3, 4) of the shuttle to be formed, by a pressure exerted on the parts of this shuttle extending said elongated rectilinear parts (3, 4), said pressure being exerted on the face of these shuttle portions which, in the final configuration of the involute (5, 6, 7, 8), will be located opposite the central axis ( 38) from the electric rotating machine.
PCT/FR2002/001387 2001-04-27 2002-04-23 Device for shaping winding coils of rotating electrical machines WO2002089300A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR01/05760 2001-04-27
FR0105760A FR2824202B1 (en) 2001-04-27 2001-04-27 DEVICE FOR FORMING THE DEVELOPANTS OF WINDINGS OF ELECTRIC ROTATING MACHINES

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Cited By (3)

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Publication number Priority date Publication date Assignee Title
JP2013017266A (en) * 2011-07-01 2013-01-24 Toyota Motor Corp Manufacturing method and manufacturing apparatus of concentric winding cassette coil
FR2998495A1 (en) * 2012-11-28 2014-05-30 Vincent Ind MACHINE FOR FORMING A COIL AND / OR A METAL BAR
JP2016039660A (en) * 2014-08-06 2016-03-22 三菱電機株式会社 Stator coil of rotary electric machine and method of manufacturing stator coil of rotary electric machine

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2605822C (en) * 2005-04-26 2014-09-09 Tm4 Inc. Rectangular wire coil head shaping machine and method therefor
CN103280935B (en) * 2013-06-07 2015-12-09 尚勤贵 A kind of motor coil forming machine

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Publication number Priority date Publication date Assignee Title
GB941643A (en) * 1961-02-23 1963-11-13 Oerlikon Maschf Apparatus for forming conductor loops of the windings of electrical machines
US4450708A (en) * 1982-06-21 1984-05-29 King Industrial Products Co., Inc. Universal, adjustable bending form for shaping electrical windings
US4964291A (en) * 1982-09-09 1990-10-23 Automated Coil Systems Limited Coil shapers for coils of rotating electric machines

Patent Citations (3)

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Publication number Priority date Publication date Assignee Title
GB941643A (en) * 1961-02-23 1963-11-13 Oerlikon Maschf Apparatus for forming conductor loops of the windings of electrical machines
US4450708A (en) * 1982-06-21 1984-05-29 King Industrial Products Co., Inc. Universal, adjustable bending form for shaping electrical windings
US4964291A (en) * 1982-09-09 1990-10-23 Automated Coil Systems Limited Coil shapers for coils of rotating electric machines

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013017266A (en) * 2011-07-01 2013-01-24 Toyota Motor Corp Manufacturing method and manufacturing apparatus of concentric winding cassette coil
FR2998495A1 (en) * 2012-11-28 2014-05-30 Vincent Ind MACHINE FOR FORMING A COIL AND / OR A METAL BAR
WO2014082995A1 (en) * 2012-11-28 2014-06-05 Vincent Industrie Machine for forming a winding and/or a metal bar
JP2016039660A (en) * 2014-08-06 2016-03-22 三菱電機株式会社 Stator coil of rotary electric machine and method of manufacturing stator coil of rotary electric machine

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FR2824202B1 (en) 2004-06-04

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