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WO2025238439A1 - Procédé d'enroulement de pôles radiaux de noyaux de machines dynamoélectriques - Google Patents

Procédé d'enroulement de pôles radiaux de noyaux de machines dynamoélectriques

Info

Publication number
WO2025238439A1
WO2025238439A1 PCT/IB2025/053771 IB2025053771W WO2025238439A1 WO 2025238439 A1 WO2025238439 A1 WO 2025238439A1 IB 2025053771 W IB2025053771 W IB 2025053771W WO 2025238439 A1 WO2025238439 A1 WO 2025238439A1
Authority
WO
WIPO (PCT)
Prior art keywords
needle
radial
along
translation
conducting wire
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.)
Pending
Application number
PCT/IB2025/053771
Other languages
English (en)
Inventor
Giovanni Manuelli
Massimo Ponzio
Francesco BIANCALANI
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.)
ATOP SpA
Original Assignee
ATOP SpA
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 ATOP SpA filed Critical ATOP SpA
Publication of WO2025238439A1 publication Critical patent/WO2025238439A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/08—Forming windings by laying conductors into or around core parts
    • H02K15/095—Forming windings by laying conductors into or around core parts by laying conductors around salient poles

Definitions

  • the present invention relates to the field of winding coils of dynamoelectric machines .
  • the solutions of the invention relate to the winding of poles of cores where the slots for receiving the coils have external openings .
  • the turns of the coils of dynamoelectric machines are wound by at least a dispenser arm capable of delivering wire on the surfaces o f wireguide members where the wire runs up to reach the predetermined positions in the slots , the final winding result requires that the wire of the turns is depos ited in the slots according to a predetermined disposition, therefore , not in a random way .
  • the turns of the coils are positioned during the winding according to a required disposition to optimi ze the quantity of wire conductor that can occupy the available space of the slot . Furthermore , the turns should not cross each other, or be excessively locally deformed to avoid damaging the wire insulation .
  • the disposition of the turns around a pole provides to progressively wind a series of turns in the radial direction of the core .
  • a turn is wound along the sides and along the axial ends of the pole , which in combination with each other delimit a slot .
  • the succession of turns wound in this manner forms a layer of turns .
  • the turns have a so called "radial strati fication" . In other words , a disposition where the turns are one next to the other in the radial direction of the pole being wound .
  • each further layer is formed in order to complete the coil.
  • the turns are again wound one next to the other in the radial direction of the pole .
  • Each further layer is formed above the layer that has been previously wound, therefore the positioning of the successive layers occurs in an angular direction of the core to form the so called " layering of the layers of the turns" .
  • a winding typology which allows to obtain very compact coils is the so called orthocyclic winding .
  • the winding wire is positioned on each winding layer among the winding wires of the wire below . This allows to optimi ze the ef ficiency of the dynamoelectric machines .
  • Machines and methods for winding poles of cores of dynamo electric machines with the slots which delimit poles provided with external opening are for example described in W02013/ 008183 .
  • a wire dispenser arm which rotates around the radial poles for dispensing the wire in such a way to form the wire turns .
  • the wire is fed up to an exit of the dispenser arm through a series of devices and, therefore , intercepted by a wire guide group which guides the conductor on a radial pole at a time .
  • the apparatus for winding a core of a dynamoelectric machine provides a support for a noz zle , or needle , through which the conducting wire to be wound around the radial poles of the aforementioned core is fed .
  • the support of the noz zle is moved with respect to the radial poles to be wound by means of a displacement group which comprises a carriage integral to the support of the noz zle and mounted on a base plate capable of sliding with respect to a first and a second sliding direction X and Y orthogonal to each other . More precisely, the displacement of the carriage along the aforementioned sliding directions X and Y is carried out by means of a cross working table .
  • the possibility is , furthermore , provided of rotating the noz zle with respect to the support by means of a rotating device which comprises a worm gear, a connection shaft and a series of rods , housed within the support of the noz zle same .
  • the displacement group is extremely complex from a structural point of view and is not able to guarantee a quick and accurate movement of the support of the noz zle .
  • the device which provides the rotation of the noz zle with respect to the support seems to be structurally complex .
  • the installation of the rotating device of the noz zle in the support results in a signi ficant increase in weight of the support same and, therefore , the need, by the displacement group , to overcome high inertial forces in order to move the total load during the displacement of the needle during the winding operations of the radial poles .
  • an obj ect of the present invention to provide a method for winding poles of cores of dynamoelectric machines capable of overcoming the aforementioned drawbacks of the prior art .
  • an obj ect of the present invention to provide a method for winding poles of cores of dynamoelectric machines which allows , with respect to the prior art apparatuses , to increase the productivity and, at the same time , capable of guarantee to precisely position the conducting wire around the radial poles .
  • a method for orthocyclically winding a conducting wire around a plurality of radial poles of a core of a component of a dynamoelectric machine having a rotation axis for obtaining a respective plurality of coils of conducting wire wound according to a predetermined winding configuration wherein each radial pole of said plurality of radial poles comprises a first and a second short side opposite to each other and substantially orthogonal to said rotation axis of said core , and a first and a second long side opposite to each other and substantially parallel to said rotation axis , wherein at said first and second short sides and at said first and second long sides respective portions of a conducting wire are laid down, said method comprising the steps of : feeding said conducting wire at a predetermined tension along a predetermined feeding path; guiding said conducting wire along a predetermined winding traj ectory by means of a needle movable along a radial direction X and an
  • the first translation Axl and the third translation Ax3 along the radial direction X occur in a predetermined first sense XI .
  • the respective second translation Ax2 along the radial direction X occurs in a predetermined second sense X2 opposite to the first sense XI .
  • the first translation Ayl along the axial direction Y occurs in a predetermined first sense Yl , moving away from the pole .
  • the second translation Ay2 and the third trans lation Ay3 along the axial direction Y occurs in a predetermined second sense Y2 opposite to the first sense Yl .
  • the step of guiding the conducting wire provides a second step of displacing the needle along a predetermined compensating traj ectory n' to lay down the conducting wire at the second short side .
  • the second step of displacing the needle provides the steps of : rotary movement of the core around the rotation axis in the first sense of rotation to bring the needle from a starting position Pl ' positioned at the side of the second long side and away from it , to a final position P4 ' positioned at the opposite side of the starting position Pl ' with respect to the second short side of the radial pole away from the first long side ; and translation of compensation, comprising a radial translation Ax' ( ti ) of the needle along the radial direction X to keep the conducting wire on a predetermined compensating traj ectory n' .
  • the proj ection of the compensating traj ectory Pt' on plane XZ transversal to the rotation axis of the core is orthogonal to the longitudinal plane of symmetry of the radial pole .
  • the translation of radial compensation Ax' ( ti ) of the needle can comprise : a first radial translation of the needle along the radial direction X in a first sense XI , to bring the conducting wire from the starting position Pl ' to an intermediate position Pint arranged on the longitudinal plane 103 of symmetry of the radial pole ; and a second radial translation of the needle along the radial direction X in a second sense X2 opposite to the first sense XI to bring the conducting wire from the intermediate position Pint to the final position P4 ' .
  • the core comprises a plurality of first and second slots . More in particular, each first and second slot is defined at the sides of two adj acent poles of the core .
  • the translation occurs in a predetermined second sense Y2 , moving away with respect to the pole .
  • the second translation Ay2 ' and the third translation Ay3 ' along the axial direction Y occurs in a predetermined first sense Y1 opposite to the second sense Y2 .
  • the needle is external to the first and the second slot in the aforementioned first , second and third positions Pl , P2 and P3 of said predetermined layering traj ectory .
  • the needle With external it is to be intended that it will be arranged along the axial direction Y external with respect to the encumbrance of the core .
  • the needle is mounted on a guide head provided with an inlet for the inlet of the conducting wire .
  • the guide head is supported by a first carriage to translate the guide head along the radial direction X and along the axial direction Y during the steps of displacement of the needle , and optionally o f rotary movement of the core .
  • the steps of first displacement Axl , Ayl , of second displacement Ax2 , Ay2 and of third displacement Ax3 , Ay3 of the needle comprise the steps of : translating the first carriage along the radial direction X by means of a first movement assembly and a first motion transmission device .
  • the first carriage is slidably mounted on a slide , in order to translate along the radial direction X with respect to the slide ; and translating the first carriage along the axial direction Y by a second movement assembly and a second motion transmission device .
  • the slide comprises a first connection point to engage the first motion transmission device and a second connection point to engage the second motion transmission device .
  • the slide moves integrally to the first carriage along the axial direction Y by means of the second movement assembly through the second motion transmission device ; in particular connected to the second connection point .
  • the first carriage moves on the slide along the first translation direction X moved by the first movement assembly through the first motion transmission device .
  • the guide head is configured to be caused to rotate around a rotation axis arranged in a direction Z orthogonal to the translation plane XXY, in order to be able to position the needle in predetermined angular positions with respect to a plane orthogonal to the rotation axis of the core in predetermined working steps .
  • the steps of displacement the needle provide a step of rotating the guide head around the rotation axis with respect to the carriage by means of a third movement assembly and a third motion transmission device .
  • the rotation of the needle determines a displacement according to the radial direction X and the axial direction Y of translation on the base of the predetermined angular position .
  • the slide is provided with a third connection point to engage the third motion transmission device .
  • the guide head comprises , furthermore , a second carriage mounted on the first carriage , advantageously interposed between the first carriage and the third motion transmission device .
  • the second carriage is , in particular, operatively connected to the guide head .
  • the second carriage is slidingly mounted on the first carriage in the radial direction of translation X, preferably by means of a guide , in particular a prismatic guide , mounted on the first carriage , for example interposed between the first carriage and the second carriage .
  • a step is , furthermore , provided of commanding the coordinated operation according to a predetermined electronic cam function .
  • the electronic cam function provides the control of the first motion transmission device and of the third motion transmission device , in order to control , during the winding steps , the translation of the slide in the radial direction X and the orientation of the needle .
  • the step of commanding the coordinated operation provides a translation of the slide along the radial direction X in a first sense and at a first speed, and a translation of the second carriage in the radial direction X but in a second sense opposite to the first sense at a second speed, in order to keep the orientation of the needle controlled with respect to the plane orthogonal to the rotation axis of the core during the winding steps .
  • the first speed of displacement of the slide will be equal to the second speed of displacement of the second carriage .
  • the component o f rotation becomes zero ; i . e . , in this interval , the relative displacement between the slide and the second carriage is zero .
  • the step of commanding the coordinated operation is adapted to vary in a predetermined way the orientation of the needle with respect to the plane orthogonal to the rotation axis of the core during the winding steps of the pole .
  • This result can be obtained by translating the slide and the second carriage along the first translation direction X in the same sense , or in senses opposite to each other, but with di f ferent speeds .
  • the method can, furthermore , comprise a step of determining the position ( Pi ( ti ) ) instant by instant of the needle by calculating the displacement of the needle along the radial direction X and along said axial direction Y due to the rotation around the rotation axis of the same , and a step of compensating the deviation between the determined position of the needle ( Pi ( ti ) ) and a corresponding predetermined position .
  • FIG. 1 diagrammatically shows a plan view a core of a dynamoelectric machine , in particular provided with slots with external openings , which can be wound by the method according to the invention;
  • FIG. 2 and from 3A to 5A diagrammatically show a plan view of the positions assumed by the needle in the radial direction at some instants of a possible sequence of steps provided by the method according to the invention for carrying out the layering at a short side of a radial pole ;
  • FIG. 3B, 4B and 5B diagrammatically show a cross-sectional view of the radial pole wound the positions along the axial direction assumed by the needle in the instants of the sequence of steps of figures 3A-5A;
  • FIG. 6A, 6C and from 7 to 9 diagrammatically show a view from below of the positions assumed by the needle in the radial direction in some instants of a possible sequence of steps provided by the method according to the invention for carrying out the compensation at the other short side of the radial pole that is wound;
  • FIG. 6B diagrammatically shows a cross-sectional view of the positions in the axial direction assumed by the needle during the instants of the sequence of steps shown in the figures 7- 9 ;
  • FIG. 11 diagrammatically shows a first possible layout according to the present invention for an apparatus for carrying out the steps of the method for winding radial poles of a core of a dynamoelectric machine , according to the invention
  • FIG. 12 diagrammatically shows an enlargement of the layout of figure 11 for highlighting some technical aspects of the apparatus for winding radial poles according to the invention
  • FIG. 13 diagrammatically shows a possible embodiment alternative to that of figure 12 of the apparatus for winding radial poles of a core of a dynamoelectric machine , according to the invention
  • FIG. 14 diagrammatically shows a perspective view from the above of the main components of an apparatus , according to the invention, for winding radial poles of a core of a dynamoelectric machine ;
  • FIG. 15 diagrammatically shows a plan view of a possible embodiment according to the invention for the slide which can be used by the apparatus of figure 14 ;
  • FIG. 16 diagrammatically shows a side elevation perspective view of the slide of figure 15 in an exploded configuration
  • FIG. 17 diagrammatically shows the slide of figure 16 in a side elevation perspective view in an assembled blocking configuration of the transmi ssion belt ;
  • FIG. 18 diagrammatically shows a perspective view from below of some components of the apparatus according to the invention.
  • FIG. 19 diagrammatically shows a plan view of a core of a dynamoelectric machine during a winding step carried out by the apparatus according to the invention
  • FIG. 20A and 20B diagrammatically show a front elevation view of the main components of the apparatus according to the invention in 2 di f ferent working instants ;
  • - Fig . 21 diagrammatically shows a plan view of the main components of the apparatus according to the invention during a winding step of a radial pole of a core of a dynamoelectric machine
  • - Fig . 22 diagrammatically shows a front elevation view of the main components of an alternative embodiment according to the invention for the apparatus for winding cores of dynamoelectric machines ;
  • FIG. 23 shows a side elevation perspective view of the apparatus o f figure 21 for highlighting other technical characteristics .
  • a core 2 of a dynamoelectric machine for example an armature , comprises a determined number of radial poles 3 each of which oriented along a respective radial direction .
  • Each radial pole 3 is laterally delimited by a first and a second slot 4a and 4b defined at opposite sides of the radial pole 3 same and delimited by two successive sive radial poles 3 .
  • the first and second slots 4a and 4b have respective openings 5 oriented outward, i f considered in their orientation with respect to the central axis 102 of the core 2 .
  • each radial pole 3 comprises a first and a second short side 6a and 6b opposite to each other and substantially orthogonal to the aforementioned rotation axis 102 , and a first and a second long side 7a and 7b opposite to each other and substantially parallel to the rotation axis 102 . More precisely, on the first and on the second short side 6a and 6b and on the first and on the second long side 7a and 7b are , respectively, laid down a first and a second short side 16a and 16b, and a first and a second long side 17a and 17b of respective portions of conducting wire 11 .
  • the method comprises the steps of feeding the conducting wire 11 along a predetermined feeding path, and of guiding the conducting wire 11 fed along a predetermined winding traj ectory by a needle 22 .
  • This is , in particular , movable along a radial direction X, because it passes through the rotation axis 102 of the core 2 , and an axial direction Y orthogonal to the first direction X and oriented parallel to the rotation axis 102 .
  • the radial direction X and the axial direction Y lie on a translation plane XXY .
  • the feeding of wire 11 is carried out with a predetermined tension .
  • a turn s i , s2 , s3 , ... sn with layering provides to carry out an advancement step at one of the short sides of the radial pole 3 , which moves the layering in a final position s f di f ferent from the initial position si .
  • the step of layering is equal to a diameter of the conducting wire 11 , but the possibility is also provided that it can be a multiple , in particular two times , three times , four times , etc . the diameter of the conducting wire 11 , for example as in the case shown in figures 2 , equal to 3 times the diameter of the conducting wire 11 .
  • the step of guiding the conducting wire 11 comprises a first step of displacing the needle 22 along a predetermined layering traj ectory to lay down the conducting wire 11 on the first short side 6a as diagrammatically shown in figure , or, alternatively, the second short side 6b, of the radial pole 3 along a layering direction inclined at a predetermined layering angle a with respect to a direction 104 orthogonal to a longitudinal plane 103 of symmetry radially arranged with respect to the core 2 and passing through the rotation axis 102 .
  • the first step of displacing comprises the steps of first rotary movement of the core 2 around the rotation axis 102 in a first sense of rotation 112 .
  • a first displacement Axl , Ayl occurs of the needle 22 along a first translation direction contained in the translation plane XXY to move from a first position Pl positioned external to the radial pole 3 , at the side of the first long side 7a, and above a plane the first short side 6a lies thereon, to a second position P2 positioned above the first short side 6a .
  • the first displacement of the needle Axl , Ayl and the first rotary movement are coordinated with each other in such a way that the conducting wire 11 is brought from a position away from the pole 3 , when the needle 22 is in the first position Pl , to a position in contact with the radial pole 3 same , or with a previous coil of conducting wire 11 i f this is already wound around the radial pole 3 , when the needle 22 is in the second position P2 and the radial pole 3 has completed the first rotary movement .
  • a second rotary movement of the core 2 occurs which follows the aforementioned first rotary movement in the first sense of rotation 112 .
  • a second displacement Ax2 , Ay2 follows of the needle 22 along a second translation direction contained in the translation plane XXY for moving from the second position P2 to a third position P3 .
  • This is , in particular, external to the radial pole 3 at the side of the second long side 7b and is positioned above the plane the first short side 6a lies thereon .
  • the second displacement Ax2 , Ay2 of the needle 22 and the second rotary movement of the core 2 are coordinated with each other, in such a way that the conducting wire 11 is positioned above the first short side 6a, however, without being completely laid down the short side 6a .
  • a third displacement Ax3 , Ay3 then occurs of the needle 22 along a third translation direction contained in the translation plane XXY for moving from the third position P3 to a fourth position P4 external to the radial pole 3 at the side of the second long side 7b .
  • the fourth position P4 is below the plane the first short side 6a lies thereon, in such a way that the conducting wire 11 is laid on the first short side 6a of the radial pole 3 , or on the first short side 16a of the coil being formed i f the conducting wire 11 has been already wound one or more times around the radial pole 3 , with an inclination equal to the predetermined layering angle a .
  • the third displacement Ax3 Ay3 the radial pole 3 remains still . More precisely, during the third displacement no rotation of the core 2 around the rotation axis 102 occurs .
  • first displacement Axl , Ayl and of third displacement Ax3 , Ay3 of the needle 22 the first translation Axl and the third translation Ax3 of the needle 22 along the radial direction X occur in a predetermined first sense XI .
  • second displacement step of the needle 22 the second translation Ax2 along the radial direction X occurs in a predetermined second sense X2 opposite to the first sense XI .
  • the step of guiding the conducting wire 11 provides , furthermore , a second step of displacing the needle 22 along a predetermined compensating traj ectory ft' .
  • This second step of di splacing the needle 22 takes place during the winding of the conducting wire 11 around the radial pole 3 during the laying of the wire on the second short side 6b .
  • the step of compensation is carried out to bring the needle 22 from the curved traj ectory n which the needle 22 would have run without the step of compensation, to the aforementioned compensating traj ectory ft' .
  • a correct tensioning of the conducting wire 11 is obtained during all the winding steps which allows to optimi ze the winding of the conducting wire 11 around the second short side 6b .
  • the step of compensation provides the steps of rotary movement of the core 2 around the rotation axis 102 in a second sense of rotation 111 (note that the figures 6A, 6C, 7 , 8 and 9 are seen from below) to bring the needle 22 to a starting position Pl ' positioned at the side of the second long side 17b and away from it , to a final position P4 ' positioned at the opposite side of the starting position Pl ' with respect to the second short side 6b of the radial pole 3 and away from the first long side 17a .
  • a translation of compensation is provided during the rotation of the radial pole 3 .
  • this translation of compensation comprises a radial translation Ax' ( ti ) ( see figure 6A) of the needle 22 along the radial direction X for maintaining the conducting wire 11 on the aforementioned compensating traj ectory Pt' orthogonal to the longitudinal plane 103 of symmetry of the radial pole 3 .
  • the aforementioned radial translation of compensation Ax' ( ti ) of the needle 22 comprises a first radial translation of the needle 22 along the radial direction X in a first sense XI , to bring the conducting wire 11 from the starting position Pl ' to an intermediate position Pint arranged at the longitudinal plane 103 of symmetry of the radial pole 3 , and, advantageously, a second radial translation of the needle 22 along the radial direction X in a second sense X2 opposite to the first , to bring the conducting wire 11 from the intermediate position Pint to the final position P4 ' .
  • the radial translation of compensation Ax' ( ti ) will follow a substantially symmetric law of motion between the starting position Pl ' and the final position P4 ’ .
  • the step of compensation comprises the steps of first rotary movement of core 2 around the rotation axis 102 in a second sense of rotation 111 . Then, a first displacement of compensation Axl ' , Ayl ' ( see figure 6B ) of the needle 22 takes place along a first translation direction contained in the translation plane XXY to move from a first position Pl ' positioned externally to the radial pole 3 at the side of the second long side 7b and below a plane the second short side 6b lies thereon, to a second position P2 ' positioned below the second short side 6b .
  • the first displacement of compensation of the needle Axl ' , Ayl ' and the first rotary movement are coordinated with each other in such a way that the conducting wire 11 is brought from a position away from the pole 3 , when the needle 22 is in the first position Pl ' , up to a position in contact with the radial pole 3 same , or to a previous layer s of conducting wire 11 i f this is already wound around the radial pole 3 , when the needle 22 is in the second position P2 ' and the radial pole 3 has completed the first rotary movement .
  • a second rotary movement of the core 2 is , furthermore , provided which follows the aforementioned first rotary movement in the second sense of rotation 111 . Then, a second displacement of compensation Ax2 ' , Ay2 ' of the needle 22 along a second translation direction contained in the translation plane XXY follows , to be positioned from the second position P2 ' to a third position P3 ' .
  • This is , in particular, external to the radial pole 3 at the side of the first long side 7a and is positioned below the plane the second short side 6b lies thereon .
  • the second displacement of compensation Ax2 ' , Ay2 ' of the needle 22 and the second rotary movement of the core 2 are coordinated with each other, in such a way that the conducting wire 11 is positioned above the second short side 6b without , anyway, being completely laid down the short side 6b .
  • the needle 22 will pass through the longitudinal plane 103 of symmetry of the radial pole 3 . The exact moment of this movement corresponds to the intermediate position Pint .
  • the second displacement of compensation Ax2 ' , Ay2 ' will change sense for the radial displacement of the needle 22 , moving from the first sense XI to the second sense X2 up to reach the third position P3 ' .
  • a third displacement of compensation Ax3 ' , Ay3 ' occurs of the needle 22 along a third translation direction contained in the translation plane XXY for moving from the third position P3 ' to a fourth position P4 ' external to the radial pole 3 at the side of the first long side 7a .
  • the fourth position P4 ' is placed above the plane the second short side 6b lies thereon, in such a way that the conducting wire 11 is laid down the second short side 6b of the radial pole 3 , or on the second short side 16b of the coil being wound i f the conducting wire 11 has already been wound one or more times around the radial pole 3 .
  • the radial pole 3 remains still . More precisely, during the third displacement of compensation no rotation of core 2 around the rotation axis 102 takes place .
  • the needle 22 is external to the first and to the second slot 4a and 4b .
  • the needle 22 is external both to the second slot 4b and to the first slot 4a .
  • an apparatus 1 for winding in a strati fied manner a conducting wire 11 around a plurality of radial poles 3 of the core 2 of a component of a dynamoelectric machine can comprise a feeding device 10 arranged to feed the conducting wire 11 at a predetermined tension along a predetermined feeding path .
  • a feeding device 10 arranged to feed the conducting wire 11 at a predetermined tension along a predetermined feeding path .
  • This is , in particular, defined by a series of gears not shown in figure 11 for reasons of clarity, but however of known type to a skilled person in the art .
  • the needle 22 can be mounted on a guide head 20 provided with an inlet 21 .
  • the conducting wire 11 enters and exits from the guide head 20 .
  • the guide head 20 can be configured to rotate around a rotation axis 120 to be able to position the needle 22 in predetermined angular positions ai with respect to a radial pole 3 at a time of the aforementioned plurality of radial poles 3 during predetermined working steps provided during the winding operations .
  • the rotation axis 120 is oriented in a direction Z orthogonal to the translation plane XXY .
  • a first carriage 30 is , furthermore , provided configured to support the guide head 20 during the aforementioned winding steps , in particular during the steps of displacement of the needle 22 .
  • the translation of the first carriage 30 along the radial direction X is operated by a first movement assembly 40 by means of a first motion transmission device 41 , in particular external to the first carriage 30 .
  • the translation of the first carriage 30 along the axial direction Y is , instead, operated by a second movement assembly 50 by means of a second motion transmission device 51 .
  • a third movement assembly 60 can be also provided to rotate the guide head 20 around the aforementioned rotation axis 120 with respect to the carriage 30 by means of a third motion transmission device 61 .
  • a third motion transmission device 61 In thi s way, as diagrammatically shown in figure 11 , it is possible to position the needle 22 in a first angular position al , corresponding to the rest position, and at least in a second angular position a2 orthogonal to the first angular position al and corresponding to the winding position .
  • a fourth movement assembly 80 is , furthermore , provided arranged to position a radial pole 3 at a time in a predetermined winding position . More in particular, the controller 300 is configured to control , furthermore , the fourth movement assembly 80 to rotate the core 2 when the conducting wire 11 is wound around the first short side 6a and around the second short side 6b .
  • the fourth movement assembly 80 can provide an electric motor 85 arranged to rotate by means of a motor shaft 86 the aforementioned core 2 of the processed component of a dynamoelectric machine around the rotation axis 102 .
  • the apparatus 1 can comprise , furthermore , a s lide 7 on which the first carriage 30 is slidably mounted to translate along the radial direction X .
  • the slide 7 comprises a first connection point 71 to engage the first motion transmission device 41 .
  • the slide 7 furthermore , advantageously, comprises a second connection point 72 to engage the second motion transmission device 51 .
  • the slide 7 also comprises a third connection point 73 to engage the third motion transmission device 61 .
  • the present technical solution provides to l ighten the first carriage 30 which causes the guide head 20 to move from and towards the radial pole 3 to be wound .
  • the second motion transmission device 51 can be a transmission belt configured to move the slide 7 along the aforementioned axial direction Y .
  • the transmission belt 51 can be engaged to the slide 7 at the second connection point 72 between a blocking surface 56 , for example provided at a lowered portion, and a blocking plate 57 .
  • the slide 7 at the blocking surface 56 can be provided with holes 58 aligned to correspondent holes 59 of the blocking plate 57 to be crossed, in working conditions , by respective blocking elements , for example bolts , screws , or similar .
  • the transmission belt 51 can be wrapped around a first motori zed pulley 54a adapted to rotate around a rotation axis 154a operated by an actuator device 55 , for example an electric motor , and a second pulley 54b idle and arranged to rotate around a respective rotation axis 154b .
  • the slide 7 is , furthermore , advantageously, provided with a protruding portion 74 .
  • a guide 36 is fixed which is oriented along the radial direction X and on which the first carriage 30 is slidably mounted to be , in this way, guided during the aforementioned translation .
  • the slide 7 is adapted, in use , to support the weight of the first carriage 30 , of the guide head 20 mounted on the same , and, advantageously, of a vertical component of the tension applied by the conducting wire 11 during the winding of the same around each radial pole 3 .
  • the first motion transmission device 41 can comprise a first circular gear 42 , for example a first pinion, operatively connected to a first actuator device 45 through a first motor shaft 44 .
  • the first circular gear 42 is mounted on the first motor shaft 44 through a series o f motion transmission gears , for example at least a bearing, not shown in figure for reasons of clarity .
  • the actuator device 45 for example an electric motor, is adapted to cause a rotation of the first circular gear 42 around a first rotation axis 142 .
  • the first motion transmission device 41 can, furthermore , comprise a first linear gear 32 , in particular a first rack, mounted on the sl ide 7 at the first connection point 71 .
  • the first circular gear 42 is arranged to engage the first linear gear 32 in order to translate the first carriage 30 along the first translation direction X .
  • the apparatus 1 can, furthermore , comprise a second carriage 35 , preferably interposed between the first carriage 30 and the third motion transmission device 61 . More in particular, the second carriage 35 is operatively connected to the guide head 20 .
  • the second carriage 35 can be slidingly mounted on the first carriage 30 to slide in the radial direction X .
  • the second carriage 35 can be slidingly mounted on the first carriage 30 by means of a guide 36 mounted on the first carriage 30 , in particular interposed between the first carriage 30 and the second carriage 35 .
  • the guide can be , in particular, a linear guide , for example a prismatic guide .
  • This technical solution allows , in particular , to obtain a relative motion between the first carriage 30 and the second carriage 35 which is extremely precise .
  • the second carriage 35 is operatively connected to the guide head 20 , for example by means of an articulated arm, or a rod-crank mechanism, to cause the aforementioned rotation around the rotation axis 120 .
  • the third motion transmission device 61 comprises a second linear gear 33 , for example a second rack, integral to the second carriage 35 .
  • the third motion transmission device 61 comprises , furthermore , a second circular gear 62 , for example a second pinion, mounted on the sl ide 7 at the third connection point 73 .
  • the second linear gear 33 can be a second rack .
  • the second circular gear 62 is operatively connected to a second actuator device 65 , for example an electric motor , through a second motor shaft 64 to cause the second circular gear 62 to rotate around a second rotation axis 162 .
  • the second circular gear 62 can be advantageously mounted on the motor shaft 64 through a series of transmission gears , for example at least a bearing, not shown in detail for reasons of clarity .
  • the second circular gear 62 is arranged to mesh with the second rack 33 in order to cause a translation of the second carriage 35 along the radial direction X, causing a corresponding rotation of the guide head 20 around the rotation axis 120 .
  • the technical solution described above allows to obtain a kinematic mechanism between the second carriage 35 and the guide head 20 similar to that of the connecting rod-crank .
  • the connecting rod end is constituted by the second carriage 35 and the crank pin by the guide head 20 . Therefore , with respect to the prior art solutions , a compact mechanism is obtained and gears providing the rotation of the needle 22 extremely simpli fied, without , anyway, af fecting their precision .
  • the first and second circular gears 42 and 62 can be , respectively, connected to the first and to the second motor shaft 44 and 64 through a first and a second hub 47 and 67 ( figure 13 ) .
  • the first motor shaft 44 and the first hub 47 have respective splined profiles arranged to make a first splined coupling .
  • the second motor shaft 64 and the second hub 67 can have respective splined profiles arranged to make a second splined coupling .
  • a first and a second guide 81 and 82 can be provided arranged along the second direction Y for guiding the translation of the slide 7 along the radial direction X same in proximity of the first and of the second connection point 71 and 72 .
  • the s lide 7 has a first and a second engagement portion 76 and 77 mounted, respectively, on a first and on a second supplementary slide 83 and 84 respectively of the first and of the second prismatic guide 81 and 82 .
  • the slide 7 is , furthermore , advantageously, provided with a protrusion 75 shaped as a prismatic guide and arranged to slidingly engage the second rack 33 .
  • the translation of the second carriage 35 is guided along the radial direction X .
  • the second carriage 35 can be slidingly mounted on the first carriage 30 in the radial direction X by means of a guide 36 positioned on the first carriage 30 .
  • the guide 36 in particular a linear guide , for example a prismatic guide guides the second rack 33 during the trans lation of the second carriage 35 in the radial direction X .
  • the slide 7 can be provided with a first through hole 71 ' at the first connection point 71 , and with a second through hole 72 ' at the second connection point 72 . More precisely, the first and second through holes 71 ' and 72 ' are configured to house , in use , respectively, the first and second motor shafts 44 and 64 of the first and third motion transmission devices 41 and 61 .
  • the motion transmission device 61 comprises a rod member 615 having a first end 616 rotatably engaged to the second carriage 35 and a second end 617 rotatably engaged to a crank member 618 .
  • This in particular at the end 619 opposite to the end at which is rotatably engaged to the rod member 615 , is operatively connected to the guide head 20 .
  • the rod member 615 - crank member 618 mechanism causes the guide head 20 to rotate around the rotation axis 120 .
  • the crank member 618 of the rod-crank mechanism can be positioned at the side of the first carriage 30 opposite to the side at which the guide head 20 is positioned . More in detail , in this case , the guide head 20 is connected to the rod member 618 by means of a connection shaft which crosses from one side to the other the first carriage 30 .
  • crank member 618 of rodcrank mechanism is positioned at the same side of the first carriage 30 at which the guide head 20 is positioned .
  • This latter can be , therefore , in this case , directly mounted on the rod member 618 .
  • the plane of rotation of the rod member 615 is much closer to the plane of rotation of the needle 22 with respect to the previous case . Therefore , this technical solution allows to control with even greater precision the position of the needle 22 during the winding steps .
  • the crank member 618 is arranged with center of rotation coincident with the rotation axis 120 of the guide head 20 .
  • the guide head 20 can rotate without eccentricity with respect to the first carriage 30 , in order to simpli fy the management of the needle 22 when is inclined towards the pole 3 , in particular downward ( figure 20A) when wire 11 is wound in the upper hal f of the pole 3 and upward when is wound in the lower hal f of the same ( figure 20B ) .
  • Such inclination is obtained by causing the relative controlled displacement between the first carriage 30 and the second carriage 35 along the first translation direction X .
  • a controller 300 can be , furthermore , provided configured to control the first actuator device 45 and the second actuator device 65 in order to operate the first and the second motor shaft 44 and 64 and, therefore , the first and third motion transmission devices 41 and 61 , in synchroni zed way according to a predetermined function, preferably an electronic cam function .
  • a predetermined function preferably an electronic cam function .
  • the controller 300 can be configured to control the first actuator device 45 , for example a first electric motor , and the second actuator device 65 , for example a second electric motor , to cause a synchroni zed translation of the first linear gear 32 along the radial direction X in a first sense , in particular at a first speed, and a translation of the second linear gear 33 along the same radial direction X, but in a second sense opposite to the first sense , in particular at a second speed equal to the first speed .
  • it is possible in particular , to keep, in particular in a predetermined position, the orientation of the needle 22 controlled during the winding steps .
  • the solution of moving the first and third motion transmission devices 41 and 61 according to an electronic cam function allows , with respect to the prior art solutions , to signi ficantly reduce the vibrations that occur during the layering step and, therefore , to carry out a much more precise winding of the radial poles 3 of the core 2 of the dynamoelectric machine .
  • the controller 300 can be configured to control the first actuator device 45 and the second actuator device 65 according to the aforementioned electronic cam function in order to vary the orientation of said needle 22 during the aforementioned winding steps of the radial pole 3 to be wound in a predetermined way .
  • the controller 300 is arranged to control the first actuator device 45 and the second actuator device 65 in order to translate the first linear gear 32 and the second linear gear 33 along the first translation direction X in a same sense , or in a respective sense one opposite to the other , but , however, with di f ferent speeds . In this way, it is poss ible , in particular, to control the angle ai between the needle 22 and the plane orthogonal to the central axis 102 .
  • the angle of inclination ai of the needle 22 with respect to the plane orthogonal to the central axis 102 will be , preferably, negative , that means oriented downward when the needle 22 is arranged in the upper hal f of the height of the pole 3 in direction of the central axis 102 , as shown in the figure 10A, 10B and 12 .
  • the angle of inclination ai of the needle 22 with respect to the plane orthogonal to the central axis 102 will be , preferably, positive , that means oriented upward when the needle 22 is arranged in the lower hal f of the height of the pole 3 in direction of the central axis 102 .
  • the angle of inclination ai with respect to the hori zontal direction is an acute angle .
  • the angle of maximum inclination is comprised in a range of values between 10 ° and 60 ° with respect to the hori zontal direction X .
  • the controller 300 is , furthermore , configured to control continuously and in a controlled way via a software , the aforementioned rotation of the guide head 20 around the rotation axis 120 with respect to the first carriage 30 for all the angular positions of the needle 22 within a predetermined range of rotation values .
  • the aforementioned continuous and controlled way via a software provides to arrange the needle 22 substantially parallel to the first translation direction X when it is positioned hal fway between the first short side 6a and the second short side 6b of the radial pole 3 in the second translation direction Y .
  • the steps of inclining the needle 22 downward follows , when the needle 22 is moved upward in the second translation direction Y towards the first short side 6a ( figure 20A) , and a step of inclining the needle 22 upward while the same is moved downward in the second translation direction Y towards the second short side 6b ( figure 20B ) .
  • the angle of inclination ai of the needle 22 during the translation in the second translation direction Y helps to optimi ze the winding along the sides 7a and 7b .
  • the needle 22 can rotate in order to be oriented substantially parallel to the first translation direction X when it is arranged above the radial pole 3 with respect to the second translation direction Y . In this way, the winding of the conducting wire 11 arranged on the first short s ide 6a is easier controlled .
  • the needle 22 can be rotated in order to orient the same parallel to the first translation direction X when it is arranged below the radial pole 3 with respect to the second translation direction Y . Also in this case , it is possible in this way, to control more easily the winding of the conducting wire 11 arranged on the second short side 6b .
  • the controller 300 can be configured to control the first movement assembly 40 to translate the carriage 30 along the radial direction X when the conducting wire 11 is wound at the first short side 6a, and/or of the second short side 6b, during a layering step .
  • controller 300 can be configured to control the second movement assembly 50 and, advantageously, the fourth movement assembly 80 .
  • controller 300 can be configured to coordinate the operation of the first movement assembly 40 , of the second movement assembly 50 , of the third movement assembly 60 , and of the fourth movement assembly 80 , in order to control during the winding steps the translation of the slide 7 in the radial direction X and the angular position ai of the needle 22 .
  • a step can be provided of commanding the coordinated operation according to a predetermined electronic cam function, of the first motion transmission device 41 and of the third motion transmission device 61 .
  • a step can be provided of commanding the coordinated operation by the control unit 300 to vary in a predetermined way the angular position ai of the needle 22 with respect to the plane orthogonal to the rotation axis 102 of the core 2 during the winding steps of the pole 3 .
  • the possibility is also provided of determining the position Pi ( ti ) , instant by instant , of the needle 22 by calculating the displacement of this along the radial direction X and along the axial direction Y due to the rotation around the rotation axis 120.
  • a step can be provided of compensating the deviation between the determined position of the needle 22 Pi (ti) and a corresponding predetermined position Pi* (ti) .

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Power Engineering (AREA)
  • Manufacture Of Motors, Generators (AREA)

Abstract

L'invention concerne un procédé d'enroulement orthocyclique d'un fil conducteur (11) autour d'une pluralité de pôles radiaux (3) d'un noyau (2) d'un composant d'une machine dynamoélectrique pour obtenir une pluralité respective de bobines (13) de fil conducteur (11) enroulées selon une configuration d'enroulement prédéterminée. Chaque pôle radial (3) comprend un premier et un second côté court (6a, 6b) opposés l'un à l'autre et sensiblement orthogonaux à un axe de rotation (102) autour duquel, pendant l'enroulement, la rotation du noyau (2) est provoquée. Chaque pôle radial (3) présente, en outre, un premier et un second côté long (7a, 7b) opposés l'un à l'autre et sensiblement parallèles à l'axe de rotation (102). Le procédé comprend les étapes consistant à fournir le fil conducteur (11) et le guider le long d'une trajectoire d'enroulement prédéterminée au moyen d'une aiguille (22) mobile le long d'une direction radiale et d'une direction axiale (X, Y) orthogonales l'une par rapport à l'autre et reposant sur un plan de translation (XXY). L'aiguille (22) est déplacée le long d'une trajectoire de stratification pour déposer le fil conducteur (11) au niveau du premier côté court (6a) du pôle radial (3) le long d'une direction de stratification inclinée selon un angle de stratification (a) prédéterminé par rapport à une direction (104) orthogonale à un plan de symétrie longitudinal (103) disposé radialement par rapport au noyau (2) et passant à travers l'axe de rotation (102).
PCT/IB2025/053771 2024-05-13 2025-04-10 Procédé d'enroulement de pôles radiaux de noyaux de machines dynamoélectriques Pending WO2025238439A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
IT202400010687 2024-05-13
IT102024000010687 2024-05-13
IT102024000016492 2024-07-17
IT202400016492 2024-07-17

Publications (1)

Publication Number Publication Date
WO2025238439A1 true WO2025238439A1 (fr) 2025-11-20

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Application Number Title Priority Date Filing Date
PCT/IB2025/053771 Pending WO2025238439A1 (fr) 2024-05-13 2025-04-10 Procédé d'enroulement de pôles radiaux de noyaux de machines dynamoélectriques

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WO (1) WO2025238439A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013008183A2 (fr) 2011-07-14 2013-01-17 Atop S.P.A. Appareil et procédé d'enroulement de pôles de noyaux pour machines dynamo-électriques
DE102017215681A1 (de) * 2017-09-06 2019-03-07 Robert Bosch Gmbh Verfahren zum Aufwickeln einer elektrischen Wicklung
EP3654503A1 (fr) 2018-10-26 2020-05-20 SMZ Wickel- und Montagetechnik AG Enrouleuses à aiguille

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013008183A2 (fr) 2011-07-14 2013-01-17 Atop S.P.A. Appareil et procédé d'enroulement de pôles de noyaux pour machines dynamo-électriques
DE102017215681A1 (de) * 2017-09-06 2019-03-07 Robert Bosch Gmbh Verfahren zum Aufwickeln einer elektrischen Wicklung
EP3654503A1 (fr) 2018-10-26 2020-05-20 SMZ Wickel- und Montagetechnik AG Enrouleuses à aiguille

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