DE102018107598A1 - Method and device for joining coil elements in an arrangement for a coil of an electrodynamic machine - Google Patents

Abstract

The invention relates to a method for joining coil elements in an arrangement for a coil of an electrodynamic machine, comprising providing a core (2) with coil elements (1) which are each arranged in a rod-shaped manner and at least partially in an associated groove of the core (1); and joining rod end ends of the coil elements (1) arranged outside the slots, wherein an intermediate clamping element is arranged in an intermediate position in the radial direction between first radially inner and first radially outer rod conductor ends, which are each adjacent to one another and to be joined together; the first radially outer Stableiterenden be stretched by displacing the intermediate clamping element by means of an associated Spannaktors radially outward in an outward clamping position against an outer stop and joined in the cocked position; and the first radially inner Stableiterenden be stretched by displacing the intermediate clamping element by means of the associated Spannaktors radially inward in an inner clamping position against an inner stop and joined in the cocked position. Furthermore, a device for joining coil elements is provided in an arrangement for a coil of an electrodynamic machine.

Description

The invention relates to a method and a device for joining coil elements in an arrangement for a coil of an electrodynamic machine.

background

In arrangements for a coil of an electric or electrodynamic machine, it may be provided to form the coil associated with a core from a plurality of coil elements which are each arranged at least in sections in a groove of the core. After arranging the coil elements on the core, conductor ends of the coil elements are to be joined together so as to establish an electrically conductive connection.

In the document US 2003/0137207 A1 A method for joining rod conductor ends of coil elements in an arrangement for a coil of an electric machine is described. Here, a holding member is arranged between radially inner and radially outer pairs of Stableiterenden, which forms a disposed between the radially inner and the radially outer Stableiterenden stop. For clamping the radially inner and the radially outer rod end to be joined together, a radially inner and a radially outer clamping element are displaced against the respective Stableiterenden, such that the Stableiterenden to be joined ends are pressed against the support member. In the tensioned state thus formed, the radially inner as well as the radially outer Stableiterenden be joined together.

Summary

The object of the invention is to specify an improved method and an improved device for joining coil elements in an arrangement for a coil of an electrodynamic machine, with which rod conductor ends of the coil elements can be joined in an efficient manner.

To solve a method and an apparatus for joining coil elements in an arrangement for a coil of an electrodynamic machine according to the independent claims 1 and 14 are provided. Embodiments are the subject of dependent claims.

In one aspect, there is provided a method of joining coil elements in an assembly for a coil of an electrodynamic machine. In the method, a core with coil elements, which are each arranged in a rod-shaped manner and at least in sections in an associated groove of the core, is provided. Barred ends of the coil elements arranged outside the grooves are joined. Here, the following is provided: in the radial direction between first radially inner and first radially outer rod conductor ends, which are each adjacent to each other and to be joined together, an intermediate clamping element is arranged in an intermediate position; the first radially outer Stableiterenden be stretched by displacing the intermediate clamping element by means of an associated Spannaktors radially outward in an outward clamping position against an outer stop and joined in the cocked position; and the first radially inner Stableiterenden be stretched by displacing the intermediate clamping element by means of the associated Spannaktors radially inward in an inner clamping position against an inner stop and joined in the cocked position.

According to a further aspect, an apparatus for joining coil elements in an arrangement for a coil of an electrodynamic machine is provided. The device has a workpiece holder, which is configured to receive a core with coil elements, which are each arranged in a rod-shaped manner and at least partially in an associated groove of the core, for a joining process. It is provided a clamping device which is arranged, in the radial direction between the first radially inner and first radially outer Stableiterenden, each adjacent to each other and to be joined to arrange an intermediate clamping element in an intermediate position to stretch the first radially outer Stableiterenden by displacing the intermediate clamping element by means of an associated Spannaktors radially outward in an outboard clamping position against an outboard stop, and tension the first radially inner Stableiterenden by displacing the intermediate clamping element by means of the associated Spannaktors radially inward in an inner clamping position against an inner stop. It is further provided a joining device which is adapted to add the first radially outer Stableiterenden in the outer clamping position and the first radially inner Stableiterenden in the inner clamping position.

A first tensioning arm of the intermediate tensioning member may be disposed between the first radially inward and the first radially outboard rod end, and a second tensioning arm of the intermediate tensioning member may be disposed between second radially inward and second radially outboard rod ends respectively adjacent to each other and to be joined together , The clamping arms can be formed as rigid clamping arms on the intermediate clamping element. In this or other embodiments, the displacement of the first tensioning arm and the second tensioning arm into the various positions is synchronized. The joining of the first radially inner and the second radially inner rod conductor ends and the joining of the first radially outer and the second radially outer rod conductor ends can take place simultaneously or at a time interval one after the other. The first and second tensioning arms may be formed symmetrically with respect to a radially extending center axis of the intermediate tensioning element. The tensioning of the first and the second rod conductor ends can take place synchronously.

At least one third clamping arm may be provided on the intermediate clamping element, which is arranged between radially inner and radially outer bar conductor ends when arranging the intermediate clamping element in order to tension it in an inner clamping position and an outer clamping position. The third clamping arm can be arranged radially inward or radially outward in relation to the first or the second clamping arm in the radial direction, such that rod conductor ends to be joined are arranged between the adjacent clamping arms.

On the intermediate clamping element can be arranged in a region which comes when moving radially inward and / or radially outward with the first radially inner and / or the first radially outer Stableiterenden into contact, a positioning, which is arranged, the first radially inner and / or to position the first radially outer rod conductor ends towards a respective joining position. The one or more positioning elements may be formed on one or more of the clamping arms. The positioning element can be set up to align the rod conductor ends to be joined in the circumferential direction of the core. At the positioning elements can be provided in the region in which come to be joined Stableiterenden with the positioning in contact with the radial direction inclined wall sections, which are arranged for example in a cone-shaped or a V-shaped wall portion. With the aid of the positioning element (s), the rod conductor ends to be joined can in one embodiment be guided or displaced from a prepositioned position into a joining position, that is to say the position in which it is then joined. In general, the positioning elements can be set up to guide or displace the rod conductor ends to be joined from a starting position into the joining position so as to position the rod conductor ends to be joined in the joining position.

The intermediate clamping element can be displaced by means of a displacement movement in the axial direction into the intermediate position, from which the intermediate clamping element for forming the outer and the inner clamping position can be displaced. Here, a lowering of the intermediate clamping element may be provided from a position above the Stableiterenden to be joined.

The rod conductor ends can each be inserted through an opening of a hole element, and by means of wall sections which delimit the opening, the outer and the inner stop can be formed. There may be provided a plurality of perforated elements each having one or more openings. One or more groups of rod conductor ends to be joined together can be arranged per opening, whereby at least two rod conductor ends are always joined together per group. A number of hole elements may together form a multi-piece perforated disc. Alternatively it can be provided a one-piece perforated disc, in particular with a circulating on a circular path arrangement of openings or openings for insertion of Stableiterenden. The one or more hole elements or the perforated disc can be moved together relative to the Stableiterenden to be joined, in particular synchronously. In this case, it can be provided that the insertion of the rod conductor ends to be joined and the arrangement of the intermediate clamping element or elements is carried out by means of a common movement. Alternatively, it may be provided that the one or more hole elements or the perforated disc on the one hand and the one or more intermediate clamping elements on the other hand temporally successively and separately to relocate.

In the various embodiments, it may be provided to introduce the rod end to be joined from a lower side (one side) into the respective associated opening, whereas the intermediate clamping element (s) are brought from the upper side (opposite side) to the respective opening so as to be between the radially inner ones and the radially outer rod conductor ends after being inserted through the opening.

When inserting the Stableiterenden to be joined in the respectively associated opening a readjustment or positioning of Stableiterenden done, such that their relative position is changed with respect to the core. The intermediate clamping element can be arranged before or after the insertion of the rod conductor ends to be joined through the associated opening with respect to the opening, wherein optionally a repositioning or adjustment of the intermediate tensioning element in the intermediate position can be provided after the Stableiterenden to be joined ends are inserted through the opening.

When plugged in, the rod conductor ends can come into contact with a conical wall section which at least partially surrounds the opening and is guided along the conical wall section to the respective joining position. By means of the guide along the conical wall section, the rod conductor ends to be joined can be displaced along a partial path to the joining position or actually positioned in the joining position.

The core may be provided with a circulating circular array of rod ends arranged outside of the slots, and the circuit arrangement may be associated with a radially encircling array of intermediate clamping elements, the intermediate clamping elements being arranged one after the other in the intermediate position, the inner clamping position and / or the outer clamping position synchronously in groups can be relocated. When arranging between the rod ends to be joined, the intermediate clamping elements can be displaced individually or in several groups together.

It can be provided that the clamping actuators are separately and individually controllable, for example, to perform individual and separate clamping strokes, which differ in the size of the clamping stroke and / or the respectively applied clamping force. Subgroups of clamping actuators can be actuated in such a way that several clamping actuators execute a same clamping stroke and / or are activated synchronously. The individual control of individual clamping actuators or groups of clamping actuators makes it possible to compensate for tolerances between the rod conductor ends to be joined in each case. It can be provided that individual clamping actuators or groups of clamping actuators are activated one after the other in order to carry out the corresponding clamping stroke separately.

To form the inner stop, an inner stop element can be displaced from radially inward to radially outward in the direction of the first radially inner rod conductor ends. Alternatively or additionally, to form the outer stop, an outer stop element can be displaced from radially outside to radially inside in the direction of the first radially outer rod conductor ends. In this case, the inner and the outer stop element can be displaced with a time delay or synchronously. An inner and / or an outer stop element can be assigned to only one or more groups of rod endings to be joined to each other, such that the respective stop element forms a stop for only one or together for a plurality of groups of Stableiterelementen to be joined. The Stableiterelemente to be joined are then stretched by means of the intermediate clamping element against the respective stop element, to finally add.

The intermediate clamping element and (at least) one further intermediate clamping element can be displaced by means of a common clamping actuator. In this embodiment, it may be provided, in particular, that the intermediate clamping element and the further intermediate clamping element act with the same clamping force on the respectively to be clamped Stableiterenden. One embodiment of common clamping actuators may be formed by means of a link disc which is rotated in a direction of rotation about a center axis of the core for clamping the rod conductor ends to be joined, for example all rod conductor ends together. In order to relax the Stableiterenden then joined, the link disc is rotated in the reverse direction of rotation. By means of the link plate, an embodiment is formed, in which circumferentially arranged on a circular path groups of each to be joined Stableiterenden can be stretched synchronously and released again. Another embodiment for common tensioning actuators may provide for the use of other mechanical tensioning means, for example wedge and / or rocker arms.

The intermediate clamping element and the further intermediate clamping element can be displaced by means of separately acting clamping actuators. The separately acting clamping actuators can be actuated with a time delay or at the same time.

The displacement of the intermediate clamping element into the intermediate position and the insertion of the rod conductor ends through the opening in the hole element can be carried out synchronously at least in sections. The movement of the hole member (or the perforated disc) and the movement for the insertion of the Stableiterenden through the opening can each be carried out as an axial movement.

The Stableiterenden the coil elements can be joined by means of a laser-joining device. The laser welding can be carried out with or without additional material. The laser joining device can have a so-called vision system, which is set up to position a joining head of the laser joining device relative to the rod end to be joined in dependence on the concrete position of the rod conductor ends to be joined, whereby optionally a tolerance compensation is made possible. Also other welding methods can be used, for example, electron beam welding, plasma welding or TIG welding.

The core with coil elements may be provided and arranged for a plug-in coil assembly. The coil elements may be U-shaped or hairpin-shaped, in particular in the embodiment as so-called hairpin coil elements.

The clamping actuators can be designed, for example, as electrical, pneumatic or hydraulic clamping actuators, each of which provides a suitable clamping stroke for the intermediate clamping element. A housing of the clamping actuators may be conical in the radial direction, which allows a circumferential arrangement of a plurality of clamping actuators along the circumference of the core. To arrange the respective intermediate clamping element between the groups of rod conductor ends to be joined, the clamping actuators can be displaced together with the respective intermediate clamping element in the axial direction (relative to the core).

In connection with the device for joining the coil elements in the arrangement for a coil of an electric or electrodynamic machine, the embodiments explained above in connection with the method can be provided accordingly.

list of figures

• 1 eine schematische perspektivische Darstellung einer Anordnung für eine Fügevorrichtung zum Fügen von Spulenelementen in einer Anordnung für eine Spule einer elektrodynamischen Maschine;
• 2 eine schematische perspektivische Darstellung eines Teils der Fügevorrichtung aus 1, wobei eine Spannvorrichtung oberhalb einer Anordnung mit Kern und am Kern angeordneten Spulenelementen gezeigt ist;
• 3 eine schematische perspektivische Darstellung der Anordnung aus 2, wobei die Spanneinrichtung zu der Anordnung mit Kern und Spulenelementen hin abgesenkt ist;
• 4 eine schematische Darstellung eines Ausschnitts der Anordnung aus 3 von oben;
• 5 eine schematische perspektivische Darstellung eines Abschnitts einer umlaufenden Anordnung von zu fügenden Stableiterenden von Spulenelementen, wobei die zu fügenden Stableiterelemente unterhalb einer Lochscheibe angeordnet sind;
• 6 eine schematische perspektivische Darstellung des Abschnitts aus 5, wobei die zu fügenden Stableiterenden teilweise in zugeordnete Öffnungen der Lochscheibe eingesteckt sind;
• 7 eine schematische perspektivische Darstellung des Abschnitts aus 5, wobei die zu fügenden Stableiterenden durch die zugeordneten Öffnungen der Lochscheibe hindurchgesteckt sind;
• 8 eine schematische Darstellung einer Anordnung von zu fügenden Stableiterenden, die paarweise durch zugeordnete Öffnungen gesteckt sind, wobei ein jeweiliges Zwischenspannelement in einer Zwischenstellung zwischen radial innenliegenden und radial außenliegenden Stableiterenden angeordnet ist;
• 9 eine schematische Darstellung der Anordnung aus 8, wobei das Zwischenspannelement nach radial innen verlagert ist, um radial innenliegende Stableiterenden zu spannen;
• 10 eine schematische Darstellung der Anordnung aus 8, wobei das Zwischenspannelement nach radial außen verlagert ist, um radial außenliegende Stableiterenden zu spannen; und
• 11 eine schematische Darstellung einer Anordnung von zu fügenden Stableiterenden, wobei in radialer Richtung mehrere jeweils miteinander zu fügende Gruppen von Stableiterenden angeordnet sind.

With reference to figures of a drawing further embodiments are explained in more detail below. Hereby show:

• 1 a schematic perspective view of an arrangement for a joining device for joining coil elements in an arrangement for a coil of an electrodynamic machine;
• 2 a schematic perspective view of a part of the joining device 1 wherein a tensioning device is shown above a core-core arrangement with coil elements disposed on the core;
• 3 a schematic perspective view of the arrangement 2 wherein the tensioning device is lowered toward the core and spool assembly;
• 4 a schematic representation of a section of the arrangement 3 from above;
• 5 a schematic perspective view of a portion of a circumferential arrangement of Stableiterenden to be joined coil elements, wherein the Stableiterelemente to be joined are arranged below a perforated disc;
• 6 a schematic perspective view of the section 5 wherein the Stableiterenden to be joined are partially inserted into associated openings of the perforated disc;
• 7 a schematic perspective view of the section 5 wherein the Stableiterenden to be joined are inserted through the associated openings of the perforated disc;
• 8th a schematic representation of an array of Stableiterenden to be joined, which are inserted in pairs through associated openings, wherein a respective intermediate clamping element is arranged in an intermediate position between radially inner and radially outer Stableiterenden;
• 9 a schematic representation of the arrangement 8th wherein the intermediate tensioning element is displaced radially inward in order to tension radially inner rod conductor ends;
• 10 a schematic representation of the arrangement 8th wherein the intermediate tensioning element is displaced radially outward to tension radially outer rod conductor ends; and
• 11 a schematic representation of an array of Stableiterenden to be joined, wherein in the radial direction a plurality of each to be mated groups of Stableiterenden are arranged.

1 shows a schematic perspective view of an apparatus for joining coil elements 1 , each in grooves of a nucleus 2 are arranged. The device comprises a tensioning device 3 , in the 1 above the arrangement with the core 2 and the coil elements 1 is arranged. Furthermore, a joining device 4 shown schematically, which is formed for example as a laser joining device. For joining the joining device 4 on the arrangement of the coil 2 with the coil elements 1 moved. When joining become Stableiterenden 5 (see. 3 ) of the coil elements 1 using the tensioning device 3 stretched in a respective joining position.

The arrangement with the core 2 and the coil elements 1 may be an arrangement for a plug-in coil, such that the coil elements 1 as rod-shaped coil elements, in particular with a U-shape, are formed, wherein the rod-shaped coil elements in associated grooves of the core 2 are inserted, such that the Stableiterenden to be joined together 5 on one side of the core 2 opposite to the side from which the insertion is made, stand out or survive. The outside of the core 2 arranged Stableiterenden 5 then use the joining device 4 joined, with the Stableiterenden 5 using the tensioning device 3 be curious about this.

2 shows a schematic perspective view with the clamping device 3 above the arrangement with the core 2 and the coil elements 1 , To pre-align for the joining process are the Stableiterenden 5 through associated openings 6 in a perforated disk 7 plugged. Alternatively to the in 2 shown embodiment of the perforated disc 7 whose openings 6 extending circumferentially on a circular path, an arrangement of a plurality of hole elements (not shown) may be provided, the one or more openings for rod end to be mated together 5 exhibit. The one or more apertured members having one or more apertures may be displaced synchronously or separately from one another about the rod conductor ends 5 Through the respective opening hindurchzustecken.

According to the exemplary embodiment in FIG 3 has the tensioning device 3 a circumferential arrangement of clamping actuators 8th , which are each set up, an associated intermediate clamping element 9 to operate, such that the intermediate clamping elements 9 can perform a clamping stroke in the radial direction.

To prepare for the actual joining process, the clamping device 3 on the arrangement of the core 2 with the coil elements 1 zubewegt, such that the clamping intermediate elements 9 according to the 3 and 4 in each case between radially inner rod conductor ends 10 and radially outer rod conductor ends 11 be arranged in an intermediate position, in which the intermediate clamping element 9 neither the radially inner rod conductor ends 10 nor the radially outer Stableiterenden 11 stressed. The shifting of the intermediate clamping elements 9 in the intermediate position by means of relative movement of the core 2 with the coil elements 1 (and perforated disc 7 ) and clamping device 3 in the axial direction.

According to 4 are the intermediate clamping elements 9 to the respective clamping actuator 8th via a connection 12 as well as a clutch 13 coupled, such that the clamping actuator 8th provided clamping stroke on the intermediate clamping element 9 is transmitted. The coupling 13 can be designed to compensate tolerances to tolerances of the Stableiterenden to be joined 5 compensate, for example by means of a spring biasing device.

According to the 3 and 4 has the intermediate clamping element 9 a first and a second clamping arm 9a . 9b with respect to a central axis of the intermediate tensioning element 9 are arranged symmetrically. In other embodiments, an arrangement of a plurality of clamping arms 9a . 9c . 9d be provided.

The 5 to 7 show further details on how to insert the rod end 5 in the associated openings 6 the perforated disc 7 , The openings 6 surrounding wall sections 6a point to a bottom 14 the perforated disc 7 conical sections 6b along, along which the Stableiterenden einzusteckenden 5 can be guided to finally in the associated opening 6 to get. 5 shows the Stableiterenden einzumckenden 5 below the perforated disc 7 , In 6 are the Stableiterenden 5 in the openings 6 plugged in. Finally, the Stableiterenden are 5 according to 7 through the openings 6 through put. In the in the 5 to 7 illustrated embodiment, the intermediate clamping elements 9 above the openings 6 arranged before the Stableiterenden 5 be plugged in. When inserting the Stableiterenden 5 the relative movement of perforated disc takes place 7 and intermediate clamping element 9 synchronous (shared). Alternatively it can be provided, first the Stableiterenden 5 through the openings 6 put it through, then the intermediate clamping elements 9 in the intermediate position between the radially inner Stableiterenden 10 and the radially outer rod conductor ends 11 bring to.

As can be seen for example 5 results, have the intermediate clamping elements 9 in the area of the first and the second clamping arm 9a . 9b a conical training 15 on. This can serve to the Stableiterenden to be joined 5 to bring during clamping in a respective joining position, which is described below with reference to the 8th to 10 is explained in more detail.

The 8th to 10 show the arrangement 5 from above, after the Stableiterenden 5 through the associated opening 6 are inserted through it. According to 8th is the intermediate clamping element 9 initially arranged in the intermediate position. To 9 then first the radially inner Stableiterenden 10 curious, such that the intermediate clamping element 9 by means of the associated clamping actuator 8th is moved radially inward to the radially inner Stableiterenden 10 against an internal stop 16 to stretch that from the wall section 6a the opening 6 is formed. In the in 9 shown internal clamping position, the radially inner rod conductor ends 10 then be joined. According to 10 becomes the intermediate clamping element 9 , before or after joining the radially inner rod conductor ends 10 , in a displaced external clamping position, in which the radially outer Stableiterenden 11 against an external stop 17 are curious, which with the perforated disc 7 is provided, and then can be joined.

In the embodiment shown, by means of the first and the second clamping arm 9a . 9b always on both sides of the intermediate tensioning element 9 to be mated Stableiterenden 5 curious; excited. Alternatively it can be provided that the intermediate clamping element 9 has only one clamping arm.

11 shows a schematic representation in which more than two groups of Stableiterenden in the radial direction 5 arranged one behind the other. The intermediate clamping element 9 may for clamping between radially adjacent groups of rod ends 5 be shifted to then stretch by means of displacement in the radial direction in each case. In the joining process, the intermediate clamping element 9 each between the neighboring groups of Stableiterenden 5 arranged to then tension and add. After this is done, the intermediate chuck is 9 from the space in which it was first introduced, to move out to move it in the radial direction and bring in the other space, in particular by means of a movement in the axial direction.

The features disclosed in the above description, the claims and the drawings may be important both individually and in any combination for the realization of the various embodiments.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• US 2003/0137207 A1 [0003]

Claims (14)

Method for joining coil elements in an arrangement for a coil of an electrodynamic machine, comprising: - Providing a core (2) with coil elements (1), which are each arranged rod-shaped and at least partially in an associated groove of the core (1); and - Joining arranged outside the grooves Stableiterenden (5) of the coil elements (1), in which case - In the radial direction between the first radially inner and first radially outer Stableiterenden (10, 11), which are each adjacent to each other and to be joined together, an intermediate clamping element (9) is arranged in an intermediate position; - The first radially outer Stableiterenden (11) by means of displacing the intermediate clamping element (9) by means of an associated Spannaktors (8) radially outwardly in an outer clamping position against an outer stop (17) stretched and joined in the cocked position; and - The first radially inner Stableiterenden (10) by means of displacing the intermediate clamping element (9) by means of the associated Spannaktors (8) radially inside in an inner clamping position against an inner stop (16) stretched and joined in the cocked position. Method according to Claim 1 , characterized in that a first clamping arm (9a) of the intermediate tensioning element (9) between the first radially inner and the first radially outer rod conductor ends (10, 11) and a second clamping arm (9b) of the intermediate clamping element (9) between the second radially inner and second radially outer rod conductor ends, which are each arranged adjacent to each other and to be joined to each other, are arranged. Method according to Claim 1 or 2 , characterized in that on the intermediate clamping element (9) in a region which comes in contact radially inward and / or radially outward with the first radially inner and / or the first radially outer Stableiterenden (10, 11) in contact, a Positioning element (15) is arranged, which is arranged to position the first radially inner and / or the first radially outer rod conductor ends (10, 11) to a respective joining position. Method according to at least one of the preceding claims, characterized in that the intermediate clamping element (9) is displaced by means of a displacement movement in the axial direction into the intermediate position, from which the intermediate clamping element (9) for forming the outer and the inner clamping position is displaceable. Method according to at least one of the preceding claims, characterized in that the rod conductor ends (5) are respectively inserted through an opening (6) of a hole element (7) and by means of wall sections (6a) delimiting the opening (6), the outer and the inside stop (16, 17) are formed. Method according to Claim 5 , characterized in that the Stableiterenden (5) on insertion with a conical wall portion (14) come into contact, which surrounds the opening (6) at least in sections, and along the conical wall portion (14) are guided to the respective joining position. Method according to at least one of the preceding claims, characterized in that the core (2) is provided with a circumferential circular arrangement of bar ends (5) arranged outside the slots, and the circuit arrangement is assigned a radially encircling arrangement of intermediate clamping elements, wherein the intermediate clamping elements (9) for placing in the intermediate position, the inner clamping position and / or the outer clamping position are shifted one after the other or synchronously in groups. Method according to at least one of the preceding claims, characterized in that for forming the inner stop (16) an inner stop element from radially inward to radially outward in the direction of the first radially inner rod conductor ends (10) and / or for forming the outer stop (17). an outboard stop element from radially outward to radially inward in the direction of the first radially outer Stableiterenden (11) are displaced. Method according to at least one of the preceding claims, characterized in that the intermediate clamping element (9) and a further intermediate clamping element are displaced by means of a common clamping actuator. Method according to at least one of the preceding claims, characterized in that the intermediate clamping element (9) and the further intermediate clamping element are displaced by means of separately acting clamping actuators. Method according to at least one of the preceding claims, as far as Claim 5 rear-facing, characterized in that the displacement of the intermediate clamping element (9) in the intermediate position and the insertion of the Stableiterenden (5) through the opening (6) in the hole element at least partially synchronously executed. Method according to at least one of the preceding claims, characterized in that the rod conductor ends (5) of the coil elements (1) are joined by means of a laser joining device (4). Method according to at least one of the preceding claims, characterized in that a core (2) is provided with coil elements (1) for a plug-in coil arrangement. Device for joining coil elements in an arrangement for a coil of an electrodynamic machine, comprising: - A workpiece holder which is adapted to a core (2) with coil elements (1), which are each arranged rod-shaped and at least partially in an associated groove of the core (2), for a joining process; a tensioning device (3) which is set up, - In the radial direction between the first radially inner and first radially outer Stableiterenden (10,11), which are respectively adjacent to each other and to be joined to arrange an intermediate clamping element (9) in an intermediate position; - To stretch the first radially outer Stableiterenden (11) by displacing the intermediate clamping element (9) by means of an associated Spannaktors (8) radially outward in an outer clamping position against an outer stop (17); and - To tension the first radially inner Stableiterenden (10) by displacing the intermediate clamping element (9) by means of the associated Spannaktors (8) radially inward in an inner clamping position against an inner stop (16); and - A joining device (4) which is adapted to add the first radially outer Stableiterenden (11) in the outer clamping position and the first radially inner Stableiterenden (10) in the inner clamping position.

Images