EP3622614A1 - Procédé et dispositif de formage de conducteurs électriques en forme de u - Google Patents

Procédé et dispositif de formage de conducteurs électriques en forme de u

Info

Publication number
EP3622614A1
EP3622614A1 EP18724231.8A EP18724231A EP3622614A1 EP 3622614 A1 EP3622614 A1 EP 3622614A1 EP 18724231 A EP18724231 A EP 18724231A EP 3622614 A1 EP3622614 A1 EP 3622614A1
Authority
EP
European Patent Office
Prior art keywords
leg
clamping
electrical conductor
clamping device
axis
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.)
Withdrawn
Application number
EP18724231.8A
Other languages
German (de)
English (en)
Inventor
Pier VAI
Angiolino BENEDETTI
Crescini SILVANO
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.)
Gehring Technologies GmbH and Co KG
Original Assignee
Gehring E Tech GmbH
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 Gehring E Tech GmbH filed Critical Gehring E Tech GmbH
Publication of EP3622614A1 publication Critical patent/EP3622614A1/fr
Withdrawn legal-status Critical Current

Links

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
    • H02K15/0414—Windings consisting of separate elements, e.g. bars, hairpins, segments, half coils
    • H02K15/0421—Windings consisting of separate elements, e.g. bars, hairpins, segments, half coils consisting of single conductors, e.g. hairpins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
    • B23P19/02—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K37/00—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors

Definitions

  • the invention relates to a method and apparatus for forming a U-shaped and in cross-section angular electrical conductor to a hairpin, which is used for the production of a rod winding of an electric machine, wherein the electrical conductor before the
  • Forming process has two mutually parallel legs which integrally by means of a connecting leg
  • the term "electric machine” only electric motors and electrical Generators understood that convert electrical energy into mechanical energy or mechanical energy into electrical energy. From DD 47 392 Bl it is known that so-called rod windings are used to produce the winding of high-performance electrical machines.
  • Rod windings consist of a large number of solid rods made of a material with good electrical conductivity. After insertion into the grooves of armature or stator lamination packages, the rods are connected to one another such that they form at least one winding strand, depending on the design.
  • the rods used for the construction of a rod winding can have a largely U-shaped geometry, in which two parallel legs are integrally connected to each other by means of a connecting leg.
  • Stator laminated core can be used in radially offset grooves, the known from GB 200,469 B U-shaped rods in the region of these connecting legs from an offset range in which the U-shaped rod is twisted in itself, as will be explained with reference to an embodiment.
  • EP 2 710 715 B1 it is known from EP 2 710 715 B1 that, in a conventional method for producing hairpins, first the rod-shaped electrical conductors are their
  • EP 2 710 715 B1 proposes a device and a method for producing hairpins for electrical machines, in which the use of shaping tools in favor of others, according to This assessment is also unfavorable
  • Forming tools and process steps is omitted.
  • the invention has for its object to provide a method and apparatus with which generic hairpins are cheaper to produce than before.
  • the device should be constructed such that it is manually operated in the simplest case, but also automatically
  • the invention was based on the finding that a twisted geometry of the connecting portion of a U-shaped electrical conductor, which ensures the same installation in a bar winding of a stator or armature of an electric machine, thereby comparatively easy to produce by first in a preferably first step two mutually parallel and clamped legs of the U-shaped electrical conductor close to the connecting leg and together with this be pivoted approximately perpendicular to that plane plan, which is designed to be clamped between the two parallel legs, and that in a necessary second step then one of the two mutually parallel legs is moved away along with the connecting leg on a circular path of the other, immovably held leg.
  • a twisted geometry of the connecting portion of a U-shaped electrical conductor which ensures the same installation in a bar winding of a stator or armature of an electric machine, thereby comparatively easy to produce by first in a preferably first step two mutually parallel and clamped legs of the U-shaped electrical conductor close to the connecting leg and together with this be pivoted
  • the invention accordingly relates to a method for forming a U-shaped and rectangular in cross-section electrical conductor, which is used for the production of a bar winding of an electric machine, wherein the electrical conductor before the forming process has two mutually parallel legs through a connecting leg are integrally connected to each other, and in which the three legs are arranged in an imaginary, plan level.
  • Clamping device is held stationary, that then the second leg moves away on a circular path of the first leg while the connecting leg is stretched, and that simultaneously or temporally following a forming section of the electrical conductor on a
  • the first clamping device and the twisting guide element are arranged in a fixed relative position to each other.
  • the guide surface is designed so that after completion of the forming process, the hairpin has the desired shape and the transitions between the various sections of the electrical conductor are as round as possible and have the largest possible radii of curvature in order to minimize the local deformation of the wire and any protective varnish.
  • the guide surface is usually one
  • clamped leg is moved on a circular path, d he second leg rotated about its longitudinal axis, so that, for example, in a cuboidal cross-section of the two legs whose broad and narrow sides are no longer aligned parallel to each other.
  • Circular portion thereof in the circumferential direction and radially offset from each other are formed.
  • Verwindungs Exselements and their radial arrangement and pitch-related positioning in the path of movement of the second leg or connecting leg produce the desired deformation of the
  • Actuators can, with the method according to the invention in terms of their dimensions and geometry very different generic electrical conductors, so so called hairpins, are produced automatically and without the change of molds cost.
  • the axis of rotation of the pivot arm is present
  • Guide surface of the twisting guide member is moved, which has a first surface portion which is formed close to the second leg and on which the radius of the circular path meets, on which the second
  • Connecting leg is deformed into a slightly S-shaped geometry, while something projecting from the imaginary plan plane, which had the U-shaped electrical conductor before the beginning of the forming process.
  • connection region between the connecting leg and the second leg advantageously relieved something, because then this formulating process is then also schlußschenkelahes
  • Another development of the method according to the invention provides that the second leg is moved on a circular path whose axis of rotation parallel to the
  • Connecting leg is taken. This additional method step relieves the transition region between the first leg and the connecting leg mechanically in the then subsequent forming of the connecting leg by means of the twisting guide element.
  • Twisting guide element before the production of a series of twisted, U-shaped electrical conductors so radially in relation to the axis of rotation of the pivot arm and pivoted about a parallel to the axis of rotation of the pivot arm aligned pivot axis of the torsion guide is pivoted that a certain orientation of the two parallel legs to each other and a certain deformation of the
  • the forming process may, according to one example, comprise at least the following process steps:
  • Forming portion of the first leg which is formed close to the connecting leg, away from the imaginary planar plane of the electrical conductor
  • This device has mutually parallel legs, which are integrally connected by means of a connecting leg.
  • This device has at least the following:
  • Clamping device by means of which the first leg can be clamped to the device frame
  • a pivoting arm rotatable about an axis of rotation, wherein this axis of rotation is aligned parallel to the first leg of the electrical conductor
  • said guide surface having a first surface portion near the second leg, to which the radius of a circular path meets, on which the second leg is moved upon rotation of the pivotal arm,
  • the device rack does not have to be stationary. It is important that the first clamping device on the
  • Device rack is arranged so that the first leg does not move relative to the device frame during the pivoting movement. The same goes for the
  • the second leg is on the pivot arm in such a way
  • the device frame carries out the pivoting movement with the twisting guide element and not the swivel arm (kinematic reversal). It is also possible that a part of the pivoting movement of the
  • the first clamping device and the second clamping device carry the same during the pivoting operation
  • Relative movement (s) and the twisting guide element is arranged with respect to one of the two clamping device in a fixed relative position, so that the hairpins in according to the invention from the U-shaped electrical conductors (um-) are formed.
  • this forming device can be provided that the two clamping devices each have a first or a third
  • Actuating device whose actuators, the first leg of the electrical conductor directly or indirectly against a clamping base on the device frame
  • Actuators are preferably by means of a
  • Clamping device and / or on the second clamping device in each case a second adjusting device is present, by means of which the connecting portion of the electrical conductor after clamping the first leg and / or the second leg of the imaginary plane plane between the two parallel legs is bendable away, preferably in the direction of the device frame.
  • Clamping devices each having a clamping piece, which are designed for clamping engagement with the respectively associated leg of the electrical conductor, and that the clamping piece of the first clamping device at its side facing the first leg side has such a shoulder that when clamping the first leg to the associated Clamping base at the same time the forming section of the first leg with entrainment of the connecting portion of the electrical conductor from the imaginary plane plane between the two parallel legs towards
  • Device frame is bendable.
  • the pivoting arm directly or via at least one lever with an actuator of a fourth adjusting device
  • Twist guide element is pivotable about a pivot axis and axially slidably mounted with respect to its longitudinal direction of the device frame.
  • the twisting guide member with an actuator of a fifth adjusting device
  • twisting guide element is pivotable about a pivot axis and / or displaceable with respect to its longitudinal extension direction. It can further be provided that on the
  • Connecting portion of the electrical conductor is used in a clamping of the two mutually parallel legs.
  • This shim is preferably connected to an actuator of a sixth adjusting device, by means of which the shim is pivotable about a pivot axis such that it is directly about the correct position of the connecting portion of the electrical conductor prior to clamping thereof pivoted.
  • the axis of rotation of the pivot arm or its pivot bearing is arranged locally adjustable on the device frame.
  • the adjustment range is defined by a coordinate system having two mutually perpendicular geometrical axes which are perpendicular to the longitudinal axis of the stationary clamped first leg of the U-shaped wire are aligned.
  • Actuators are designed as fluid-operated actuators whose control valves via
  • Control lines are connected to a control device.
  • FIG. 1 is a schematic representation of a known bending device, by means of which a U-shaped electrical conductor can be bent from a wire,
  • FIG. 3 shows the electrical conductor according to FIG. 2 with a division of its functional sections
  • FIG. Fig. 5 is a simplified schematic representation of a forming device according to the invention in one
  • FIG. 6 shows the forming device according to FIG. 5 in a schematic side view C in the starting position with a view of the stationarily arranged first leg of the electrical conductor, FIG.
  • FIG. 7 shows the forming device according to FIG. 5 during a first contact of the second leg of the electrical conductor with a twisting guide element
  • FIG. 10 shows the forming device according to FIG. 5 with a stop for adjusting the pinching position of FIG
  • FIG. 11 shows the forming device according to FIG. 10 in a schematic side view with the stop, FIG.
  • FIG. 12 shows the forming device according to FIG. 5 with an adjustable pressure piece by means of an actuator, by means of which a forming section of the first leg can be acted on, FIG.
  • FIG. 13 shows the forming device according to FIG. 12 in a schematic side view, in which also the actuator can be seen, which acts on the pressure piece
  • 14 shows a detailed view of the guide surface of the twisting guide element according to FIGS. 5 to 13
  • FIG. 15 shows a schematic side view of the first clamping device, which has a stepped clamping piece
  • FIG. 16 shows one of the features of the invention
  • Forming device in a plan view, shown with an electrical conductor clamped there, in a non-actuated position,
  • FIG. 17 shows the forming device according to FIG. 16 in a plan view after initial deformation of the first leg of the electrical conductor
  • Forming device in a plan view after a final deformation of the electrical conductor to a hairpin and
  • FIG. 19 shows a reduced representation of FIG. 16 for explaining the relative position of the axis of rotation of FIG.
  • Leader. 1 shows a schematic representation of a bending device 1 * known per se, by means of which a U-shaped electrical conductor 6 can be bent out of a wire 2.
  • the wire 2 is fed to a first roller 3 and bent around the surface of the first roller 3 in a circular segment shape by means of a second roller 4.
  • the wire 2 by means of a
  • bent wire 2 only after its final
  • Shaping must be handled as a single part.
  • the electrical conductor 6 has a largely semicircular connecting leg 9, which integrally connects the two mutually parallel legs 7, 8.
  • the three legs 7, 8, 9 of the electrical conductor 6 are such to each other
  • Such an electrical conductor 6 serves as a preliminary product for producing a hairpin 19 shown in FIG. 4, whose legs 7, 8, 9 no longer lie in the same imaginary plane 10.
  • the electrical conductor 6 must be reshaped, the
  • Connecting leg 9 is performed so that the two other legs 7, 8 is still a straight
  • the electrical conductor 6 has a rectangular, preferably cuboid cross-sectional geometry.
  • FIG. FIG. 4 shows one designed as a hairpin 19
  • Legs 7, 8 each have a narrow longitudinal side 15, 17 and a wide longitudinal side 14, 16 have.
  • the narrow longitudinal sides 17 and the wide longitudinal sides 14 of the first leg 7 in other directions than the narrow longitudinal sides 15 and the wide
  • Connecting leg 9 formed accordingly.
  • the connecting leg 9 as shown in Fig. 4, a roof-shaped tip 20 or a flat curved
  • the electrical conductor 6 in the connecting region of the connecting leg 9 has a first forming section 11 and a second forming section 11 ', which also has a connecting loop
  • Section of the two mutually parallel legs 7, 8 include. Farther to the free end, the two parallel legs 7, 8 each have a clamping portion 12, 12 ', which for clamping in an inventive Forming device 1 are provided. This is then followed in each case by a lower section 13, 13 'which extends up to the respective free end of the two parallel ones
  • FIGS. 5 to 13 and 16 to 18 show, respectively, seen from different viewing directions and in FIG.
  • Forming device 1 by means of a U-shaped
  • electrical conductor 6 can be converted to a hairpin 19, which looks similar to that of FIG. 4.
  • FIGS. 16 to 18 each best show the overall structure of the forming device 1 in a schematic plan view. Accordingly, the forming device 1, a device frame 21, which all essential
  • the first clamping base 22 associated with the first clamping device A is fixed to the device frame 21 or integral with it, and serves as an abutment in clamping the first leg 7 of the U-shaped electrical conductor 6.
  • the clamping of this first leg 7 is effected by means of a first Clamping piece 23 which is formed or fixed to the free end of an actuator of a first adjusting device 32.
  • This first adjusting device 32 is designed as Axialaktuator.
  • a second adjusting device 33 also designed as an axial actuator, which is shown only in FIG. 13 and described later, can likewise be arranged at the location of the second clamping device A.
  • the first adjusting device 32 as well as all other, still to be mentioned adjusting devices are preferably designed as electromotive actuators. But they can also be hydraulic or pneumatic actuators. The respective actuator of the actuators can be moved axially or rotationally.
  • Clamping base 24 is a component of a pivoting arm 27 which, according to FIGS. 16 to 18, is pivotably mounted about an axis of rotation 41 on the device frame 21
  • this is the second one
  • Clamping base 24 is formed as a recess on the pivot arm 27, which forms a portion of
  • the second clamping base 24 thus serves as an abutment when clamping the second leg 8 of the U-shaped electrical conductor 6 on the pivot arm 27. The clamping of this second
  • Leg 8 is effected by means of a second clamping piece 25 which is formed or fixed to the free end of an actuator of a third adjusting device 34.
  • This third adjusting device 34 is also an axial actuator educated.
  • the housing of this third adjusting device 34 is fixedly connected via a connecting structure 61 with the pivot arm 27, as shown schematically.
  • the pivot arm 27 is attached via a lever 38 and joints 39, 40 to an actuator 37 of a fourth adjusting device 36 ', which also serves as Axialaktuator
  • Actuator 36 'leads to a pivoting movement of the pivot arm 27 about its axis of rotation 41 according to the
  • the fourth actuator 36 is designed as a rotary actuator with a rotation axis 28, and that the rotary actuator 36 forms the pivot bearing of the pivot arm 27.
  • a rod-shaped twisting guide member 30 is fixed to the apparatus frame 21.
  • the attachment of this twisting guide member 30 is in the illustrated embodiment such that the
  • adjusting axis 49 Arranged perpendicular thereto adjusting axis 49 is pivotally mounted (see local double arrows).
  • An axial adjustment of the twisting guide element 30 is preferably carried out by means of at least a fifth
  • Actuator 47 which is designed as Axialaktuator and via an actuator 48 with the
  • Twist guide member 30 is connected. To the leadership the axial displacement of the twisting guide member 30 has this in the illustrated embodiment, a slot 50 which is penetrated by a screwed in the device frame 21 screw.
  • Reference numeral 18 indicates an angle of attack, according to which the twisting guide member 30 is alignable.
  • the setting angle to be set and the axial position of the effective for the deformation of the electrical conductor 6 axial end of the twisting guide member 30 are dependent on the dimensions of the electrical conductor to be deformed 6 as well as the one to be achieved
  • the twisting guide member 30 has at its
  • Swing arm 27 is moved along a circular path 42 which is at least partially radially within the range of the guide surface 31 of the twisting guide member 30.
  • Fig. 18 shows how, as a result of such a forming process from the U-shaped electrical conductor 6, a hairpin 19 has been formed for producing a bar winding of a stator or armature of an electric Machine can be used.
  • the Guide surface 31 is designed so that after completion of the forming process, the hairpin has the desired shape and the transitions between the various sections 12, 12 ', 11, 11' of the electrical conductor 6 are as round as possible to the local deformation of the wire and possibly one minimize existing protective coatings.
  • the guide surface 31 is usually a free-form surface.
  • the forming device 1 can also have a dial 43, which is fastened to the device frame 21 so as to be pivotable about an off-center pivot axis 44.
  • the pivoting of the dial 43 is accomplished by means of a sixth actuator 51, which
  • Pivoting directions 45 are indicated by a double arrow
  • FIG. 16 shows that all adjusting devices 32, 33, 34, 36, 36 ', 47, 51 of the forming device 1 are connected via dashed control lines to a control device 60, which commands the actuation of these actuators. Its decisions are made by the control device 60, preferably on the basis of sensor information that is not shown
  • the described forming device 1 can with a
  • FIGS. 5 to 15 schematically illustrate a forming device 1 which is substantially identical to the forming device 1 shown in FIGS. 16 to 18. Only the fourth setting device 36 'operating the pivoting arm 21 is shown in FIGS 15 to simplify the drawing as a rotary actuator 36, so for example as a
  • Figures 5 and 6 show an initial situation in which a U-shaped electrical conductor 6 with its two mutually parallel legs 7, 8 in a
  • Forming device 1 designed according to the invention
  • Fig. 6 shows in a side view C of the forming device 1, that the first leg 7 between the first clamping base 22 and the first pressure piece 23 of the first actuator 32 is arranged, and that designed as Axialaktuator first actuator 32 with the actuator 35 according to the local direction arrow presses against the first leg 7.
  • Fig. 7 shows a second operating situation of
  • Forming device 1 in which the pivot arm 27 by means of the fourth adjusting device 36 so far around his
  • Swivel axis 28 has been pivoted that the electric Head 6, the guide surface 31 of the protruding here from the plane of the twisting guide element 30 just touched.
  • the electrical conductor 6 was in the area of his
  • Forming device 1 in an operating situation in which the desired deformation of the electrical conductor. 6
  • the guide surface 31 of the twisting guide member 30 is designed for such and in relation to the circular path 42nd of the first leg 7 positions the electrical conductor 6 on the first contact with the twisting guide element 30 after the first contact shown in FIG
  • Guide surface 31 is deflected and then bent with deformation of the second deformation portion 11 'with respect to the circular path 42 radially outward. This gives the second deformation portion 11 'of the electrical conductor 6, the geometry of a generic hairpin 19, which is suitable for producing a rod winding of a stator or armature of an electric machine.
  • the geometry of the hairpin 19 depends inter alia on how large the radius of the circular path 42, to which the second leg 8 is moved during a pivoting movement of the pivot arm 27.
  • the geometry of the hairpin 19 to be produced is determined by how far the
  • Guide surface 31 of the twisting guide member 30 extends radially inwardly and radially outside of said circular path 42 of the second leg 8.
  • Verwindungs units 30 has a second leg 8 of the electrical conductor 6 near first surface portion 53 which is disposed radially within the circular path 42 of the second leg 8, and that the
  • Forming device 1 according to the invention described. According to FIGS. 10 and 11, the forming device 1 can have a dial instead of the dial 43 shown in FIG. 16
  • This stop 29 is in the example shown in Figures 10 and 11 by the free end of the actuator 59 of a seventh
  • Adjusting device 58 is formed, which is also designed here as an axial actuator whose rod-shaped
  • Actuator 59 can be adjusted toward the upper end (tip 20) of the connecting leg 9.
  • FIGS. 12 and 13 show a variant already indicated further above, in which a total of two in the region of the first clamping device A are used
  • Axialactuators trained adjusting devices 32, 33 are arranged.
  • the first adjusting device 32 as already described, the first leg 7 of the electrical conductor 6 is fixed in place on the device frame 21.
  • a pressure piece 26 of the second adjusting device 33 presses on this forming portion 11 of the first leg 7, which is close to the
  • Connecting leg 9 is formed.
  • Twisted guide element 30 are favored.
  • FIG. 12 shows that also in the area of the third
  • Adjusting device 34 such a second adjusting device 33 'may be arranged, which can press with a pressure piece 26' against the forming portion 11 'of the second leg 8 and against the adjacent portion of the connecting leg 9 in order to bend this area slightly towards the device frame 21 ,
  • FIG. 15 shows that a similar deformation process can also be carried out with the first adjusting device 32 if its clamping piece 23 * has a step 56 in the direction of the electrical conductor 6.
  • Fig. 18 shows that the axis of rotation 41 of
  • the axis of rotation 41 of the pivot arm 27 or its pivot bearing takes place on the device frame 21
  • the actuator for example, by a fluid pressure medium or electrically actuated.
  • Rotation axis 41 of the pivot arm 27 and its pivot bearing on the device frame 21 may
  • Device 1 easy to transform differently sized U-shaped wires 6 to hairpins with different
  • FIG. 19 is based on FIG. 17, in which the legs 7, 8 of the electrical conductor are already attached to the first clamping base 22 and the second clamping base 24
  • Fulcrum 41 to the left of the limited by the lines 67, 69 area.
  • Fulcrum 41 lie within the area become wider. This results when in the figure 18 the

Landscapes

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

Abstract

L'invention concerne un procédé et un dispositif (1) de formage d'un conducteur électrique en forme de U (6) en une épingle à cheveux (19), lequel peut être utilisé pour la fabrication d'un enroulement à barres d'une machine électrique, le conducteur électrique (6) comportant, avant le processus de formage, deux branches (7, 8) parallèles l'une à l'autre, lesquelles sont raccordées l'une à l'autre d'un seul tenant par un bras de raccordement (9) et les trois branches (7, 8, 9) étant disposées dans un plan (10) imaginaire. L'invention vise à mettre en œuvre le formage du conducteur électrique (6) en une épingle à cheveux (19) de manière économique. À cet effet, les deux branches (8, 9) parallèles l'une à l'autre sont respectivement serrées dans un dispositif de serrage (A, B); ensuite la première branche (7) est maintenue fixe conjointement avec le premier dispositif de serrage (A); ensuite la deuxième branche (8) est déplacée sur une trajectoire circulaire (42) à l'écart de la première branche (7) et la branche de raccordement (9) est étendue; et, de manière simultanée ou séquentielle, une section de formage (11') du conducteur électrique (6) est déplacée sur une surface de guidage (31) d'un élément de guidage de torsion (30), laquelle fait saillie radialement au-delà de la trajectoire circulaire (42).
EP18724231.8A 2017-05-11 2018-05-11 Procédé et dispositif de formage de conducteurs électriques en forme de u Withdrawn EP3622614A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017004538.0A DE102017004538A1 (de) 2017-05-11 2017-05-11 Verfahren und Vorrichtung zum Umformen von U-förmigen elektrischen Leitern
PCT/EP2018/062243 WO2018206783A1 (fr) 2017-05-11 2018-05-11 Procédé et dispositif de formage de conducteurs électriques en forme de u

Publications (1)

Publication Number Publication Date
EP3622614A1 true EP3622614A1 (fr) 2020-03-18

Family

ID=62152568

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18724231.8A Withdrawn EP3622614A1 (fr) 2017-05-11 2018-05-11 Procédé et dispositif de formage de conducteurs électriques en forme de u

Country Status (7)

Country Link
US (1) US11601034B2 (fr)
EP (1) EP3622614A1 (fr)
JP (1) JP6970282B2 (fr)
KR (1) KR20200018413A (fr)
CN (1) CN110603719B (fr)
DE (1) DE102017004538A1 (fr)
WO (1) WO2018206783A1 (fr)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
FR3121297A1 (fr) 2021-03-29 2022-09-30 Nidec Psa Emotors Conducteur électrique pour stator de machine électrique tournante et procédé de fabrication

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DE102019114221A1 (de) * 2019-05-28 2020-12-03 Grob-Werke Gmbh & Co. Kg Greifvorrichtung und Greifverfahren für Hairpins
AT523029A1 (de) * 2019-10-10 2021-04-15 Miba Automation Systems Ges M B H Verfahren zum Bereitstellen von Formstäben aus einem elektrischen Leiterdraht
DE102020107192B3 (de) * 2020-03-16 2021-05-12 Gehring E-Tech Gmbh Vorrichtung zum Biegen mindestens eines in einem Ausgangszustand U-förmigen Leiterstücks und ein entsprechendes Verfahren
DE102020107193B3 (de) * 2020-03-16 2021-05-12 Gehring E-Tech Gmbh Vorrichtung und ein Verfahren zum Biegen mindestens eines Leiterstücks
DE102020112892A1 (de) 2020-05-13 2021-11-18 Gehring Technologies Gmbh + Co. Kg Vorrichtung und Verfahren zum Abisolieren von Leiterstücken
KR102555444B1 (ko) * 2020-11-16 2023-07-13 (주)글로벌엔지니어링 헤어핀 권선 커팅툴 및 커팅툴 어셈블리
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CN110603719A (zh) 2019-12-20
JP6970282B2 (ja) 2021-11-24
JP2020520629A (ja) 2020-07-09
US20210135552A1 (en) 2021-05-06
DE102017004538A1 (de) 2018-11-15
KR20200018413A (ko) 2020-02-19
WO2018206783A1 (fr) 2018-11-15
CN110603719B (zh) 2021-11-26

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