EP4165761A1 - Vorrichtung und verfahren zur bestückung eines statorkerns mit leiterstücken - Google Patents
Vorrichtung und verfahren zur bestückung eines statorkerns mit leiterstückenInfo
- Publication number
- EP4165761A1 EP4165761A1 EP22758454.7A EP22758454A EP4165761A1 EP 4165761 A1 EP4165761 A1 EP 4165761A1 EP 22758454 A EP22758454 A EP 22758454A EP 4165761 A1 EP4165761 A1 EP 4165761A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- holding
- conductor
- holding unit
- stator core
- link
- 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
Links
- 239000004020 conductor Substances 0.000 title claims abstract description 216
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000003780 insertion Methods 0.000 claims description 24
- 230000037431 insertion Effects 0.000 claims description 24
- 230000001960 triggered effect Effects 0.000 claims 2
- 238000012546 transfer Methods 0.000 description 8
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000005520 electrodynamics Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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
- H02K15/06—Embedding prefabricated windings in the machines
- H02K15/062—Windings in slots; Salient pole windings
- H02K15/064—Windings consisting of separate segments
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/12—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots
Definitions
- the invention relates to a device for equipping a stator core with a plurality of conductor pieces, preferably with hairpins, with the features of claim 1 and a method for equipping a stator core with a plurality of conductor pieces with the features of the independent claim.
- Stators are used in electrodynamic machines, e.g. B. in electric motors.
- electrodynamic machines e.g. B.
- individual Winding elements plug-in coils, so-called "hairpins”
- the individual conductor pieces or Hairpins are inserted into the stator core, often deformed in the stator core (twisting) and then welded together so that the individual conductor sections form the windings of the stator.
- a hairpin in the present sense is a conductor piece with two elongate legs that are connected via a connecting section. Hairpins are often essentially U-shaped.
- the connecting section also called the connecting leg
- a conductor piece can have two elongate legs. However, a conductor piece can also have only one elongate leg.
- Such so-called special pins are usually used in addition to hairpins (conductor pieces with two legs) in the stator core.
- Such special pins typically have an elongated shape.
- the goal here is to insert the conductor sections into the stator very quickly, reliably and fully automatically.
- the conductor pieces such. B in DE 10 2018 114 875 Al, initially arranged in an auxiliary device in such a way that their arrangement and in particular the relative position to one another, the subsequent arrangement of the conductor pieces in the stator core is equivalent to .
- the conductor pieces aligned in this way are then removed from the auxiliary device by means of a gripping device and inserted into the stator core.
- the conductor sections should be inserted into the stator as quickly and fully automatically as possible, they should also be inserted as precisely as possible.
- the object of the present invention is to provide a possibility for equipping a stator core with several conductor pieces, preferably with hairpins, and a method for equipping a stator core with several conductor pieces, with the most variable, fast and precise fitting of the stator core with conductor pieces being made possible.
- the object is also achieved by a method according to the independent method claim.
- the conductor pieces preferably include hairpins, which are designed in particular with a rectangular conductor cross section. In particular, it is provided that both hairpins and special pins are used together.
- the device comprises a first holding device for holding and moving the conductor sections.
- the first Holding device is designed in particular for gripping and moving the conductor sections.
- the first holding device has a plurality of first holding units.
- the first holding units are arranged in a starting position on a first circular path around a first center point.
- the first holding units are arranged in an end position on a second circular path around the first center point.
- the first holding units are each arranged in a circle around the first center point in the starting position and the end position.
- the radius of the first circular path is larger than the radius of the second circular path.
- the first orbit is further away from the first center point than the second orbit. The first holding units can thus be moved radially inwards from the starting position into the end position.
- Each first holding unit is designed to fix at least one conductor piece to be inserted into the stator core on its leg.
- the fixing can in particular take place in a gripping manner.
- gripping jaws that can be moved towards and away from one another can be provided.
- the conductor piece fixed by the first holding unit is fixed or set which corresponds to the orientation in a final configuration in the stator core.
- the conductor piece fixed in the first holding unit is already aligned in the same way as it will be later in the Final configuration should be aligned in the stator core and set in such a way.
- a final configuration means the final arrangement and alignment of the conductor pieces used in the stator core.
- Each first holding unit is designed to be movable along a radial direction running through the first center point between the start position and the end position. In other words, each gripper unit can be moved back and forth between the start position and the end position. The movement of the respective first holding units between the respective starting position and the end position can take place along a straight line.
- the leg of the conductor piece to be inserted into the stator core, fixed in the respective first holding unit is moved from the starting position to the end position by means of a linear translatory movement by means of the corresponding first holding unit.
- a straight-line translational movement means a movement in which the moving conductor section is moved along a straight line and its orientation or position is thereby changed. Orientation is not changed (i.e. not rotated, even partially).
- the device also includes a second holding device for holding and moving the conductor sections.
- the second holding device has a plurality of second holding units.
- the second holding units are arranged in a starting position on a third circular path around a second center point.
- the second holding units are arranged in an end position on a fourth circular path around the second center point.
- the second holding units are arranged in a circle around the second center point in the starting position and the end position.
- the radius of the third circular path is larger than the radius of the fourth circular path.
- the third circular path (start positions) is further away from the second center point than the fourth circular path (end positions).
- Every second holding unit is designed to fix at least one conductor piece to be inserted into the stator core on its leg and/or to form a stop for the leg in the direction in which it extends. The fixation takes place in particular by clamping. Every second holding unit fixes the conductor pieces in an orientation that corresponds to the orientation in the final configuration in the stator core. In other words, the conductor piece fixed in the second holding unit is already aligned exactly as it is later to be aligned in the final configuration in the stator core.
- the second holding unit can provide two stops in the circumferential direction, which prevent rotation of the conductor piece and additionally or alternatively a stop in the vertical direction, which limits a movement of the conductor section in any case in one direction (beyond the second holding unit) along the direction of extension of the respectively held leg.
- a first leg of the conductor section is fixed by a second holding unit and the second leg of the same conductor section is fixed by a first holding unit.
- the leg fixed by the first holding unit is moved along the radial direction and the leg fixed by the second holding unit is moved along the movement path of the second holding unit.
- the movement path of the second holding unit can run parallel to the radial direction.
- the first holding unit 12 and the second holding unit 12 which move a common conductor piece, can move parallel to each other.
- the end of the leg of the conductor piece fixed in the first holding unit can in particular be arranged freely in the device.
- the other leg, which is held by the second holding unit is arranged freely in the device, in particular along its extension up to the connecting section.
- fixing, holding, gripping and/or clamping means 3-dimensional fixing, ie fixing in all three spatial directions.
- the second holding units are designed to be movable along a respective movement path between the starting position and the end position. In other words, every second holding unit can be moved back and forth between the starting position and the end position.
- the leg of the conductor piece to be inserted into the stator core which leg is fixed in the respective second holding unit, is moved from the starting position to the end position by means of a linear translational movement by means of the corresponding second holding unit.
- the movement paths of the second holding units run tangentially to a fifth circular path around the second center point.
- Both the first holding units and the second holding units each move on rectilinear paths of movement between their respective starting positions and end positions.
- the paths of movement of the first holding units and the second holding units can in particular be arranged parallel to one another.
- the first holding units and the second holding units that grip the same conductor pieces or hold move on mutually parallel trajectories, in particular between the respective start and end position.
- a first holding unit and a second holding unit gripping the same conductor piece, respectively. hold can be moved parallel to each other.
- the second holding units can have a fork-like shape.
- the second holding units can be designed to grasp at least one conductor section at its leg end.
- each second holding unit can be designed to contact the leg end of a conductor piece on at least three different sides.
- Each second holding unit can be designed to contact the leg end of a conductor piece on two opposite sides (arranged in the circumferential direction) and on the side facing the stator core (“underside” of the respective leg).
- the device can comprise an equipping device for equipping the first holding device and/or the second holding device with conductor pieces.
- the assembly device can be designed and arranged in order to equip at least one first holding unit of the first holding device with at least one conductor piece.
- the assembly device can be designed to equip at least one second holding unit of the second holding device with at least one conductor piece.
- the placement device can be designed to be gripper-based.
- the first holding device can be designed to be rotatable relative to the placement device.
- the second holding device can be designed to be rotatable relative to the placement device. It is conceivable that the first holding device and the second Holding device can be designed to be rotatable relative to the pick-and-place device, separately from one another or together.
- the first holding units can each have a first extension, which engages in a first link track.
- Several (in particular all) first link tracks can be arranged in a first link element.
- the first link element can in particular be designed as a disc element and be arranged in the device in a rotatable manner.
- the first connecting link element is flat in a plane running in the direction of extension of the conductor sections.
- the first link tracks can be arranged on the first link element in such a way that the first holding units can be moved between the starting position and the end position by a rotational movement of the first link element along the radial direction.
- the first holding units can each be guided via a first guide device in such a way that the first holding units can be moved exclusively along the radial direction between the starting position and the end position.
- the rotational movement of the first link element can take place, for example, by a pneumatic drive, in particular a pneumatic cylinder.
- the configuration just described makes it possible to transfer the first holding units from their starting position to the end position in a structurally simple manner. In other words, the first holding units can be moved by means of the link drive just described.
- the second holding units can each have a second extension, which engages in a second link track. Several (in particular all) second link tracks can be arranged in a second link element.
- the second link tracks can be arranged on the second link element in such a way that the second holding units can each be moved along the movement path between the starting position and the end position by a rotational movement of the second link element.
- the second holding units can each be guided via a second guide device in such a way that the second holding units can be moved exclusively along the movement paths between the starting position and the end position.
- the rotational movement of the second link element can take place, for example, by a pneumatic drive, in particular a pneumatic cylinder.
- first and the second link element can be rotated by means of the same, in particular pneumatic, drive.
- the first holding units can each have at least one pivotable first gripping jaw.
- a second Gripping jaws can be arranged in a fixed manner in the first holding unit.
- Each first gripping jaw can have a third extension, which engages in a third link track.
- the third link track can be arranged in a third link element.
- the third link path can be arranged on the third link element in such a way that the first gripping jaw can be pivoted by a movement of the third link element along the radial direction in such a way that the first gripping jaw is pivoted toward the second fixed gripping jaw in order to grip a conductor section.
- a pivoting movement of the first gripping jaw relative to the first holding unit or the fixed second gripping jaw are effected.
- the first gripping jaw is pivoted away from the stationary second gripping jaw.
- the third link element can be guided via a third guide device in such a way that the third link element can only be moved along the radial direction.
- the stationary second gripping jaw can be designed in one piece with the third guide device.
- the gripping of the conductor section by means of a first holding unit can be brought about by a movement of the third gate element along the radial direction.
- the gripping of the conductor section can be brought about by a radially outward movement of the third link element by means of a first holding unit.
- the release of the grip of a first holding unit can be brought about by a radially inward movement of the third link element.
- the first (pivotable) gripping jaws can have a fixing element for fixing at least one conductor section.
- the fixing element can have a comb-like structure.
- the fixing element can have several contacting elements, in particular of different lengths.
- the contacting elements are in particular designed and arranged in such a way that a conductor piece to be gripped is contacted along its extension by a plurality of spaced-apart contacting elements.
- the contacting elements can be of different lengths. In this way, two adjacent contacting elements can contact two different conductor sections. In particular, each contacting element can be designed to contact only one conductor piece at a time. It is also conceivable that contacting elements of the same length contact the same piece of conductor.
- the device may further comprise a cylindrical inner tool for receiving the conductor pieces in the final configuration.
- the inner tool can have several grippers exhibit .
- Each gripper can be designed to fix at least one piece of conductor to its leg.
- the grippers can be designed to be movable along the radial direction.
- the grippers can be designed to be extended out of the inner tool and/or retracted into the inner tool. It is conceivable that the grippers can be fully retracted into the inner tool. Partial retraction is also possible.
- the grippers can have a fork-like shape.
- the grippers can each have a fourth extension, which engages in a fourth link track.
- Several fourth link tracks can be arranged in a fourth link element.
- all fourth link tracks can be arranged in the fourth link element.
- the fourth link tracks can be arranged and configured on the fourth link element in such a way that the grippers can be moved along the radial direction by a rotational movement of the fourth link element.
- the grippers can each be guided via a fourth guide device in such a way that the grippers can be moved exclusively along the radial direction.
- the rotational movement of the fourth link element can take place, for example, by means of a pneumatic drive, in particular a pneumatic cylinder. In other words, the Grei fer can be moved by means of the link drive just described.
- the inner tool can have several holders.
- Each holder can be designed to contact at least one piece of conductor on its leg.
- each holder contacts at least one conductor piece by supporting it on its leg.
- Each holder preferably makes contact with at least one conductor piece at its leg end, in particular on a surface facing the stator core.
- the holders can be rod or be designed in the form of a pin.
- Each holder can be designed to be movable along the radial direction in order to be extended out of the inner tool and/or retracted into the inner tool.
- the holders can each have a fifth extension, which engages in a fifth link track.
- Several (in particular all) fifth link tracks can be arranged in a fifth link element.
- the fifth link tracks can be arranged on the fifth link element in such a way that the holders can be moved along the radial direction by a rotational movement of the fifth link element.
- the holders can each be guided via a fifth guide device in such a way that they can only be moved along the radial direction.
- the rotational movement of the fifth link element can take place, for example, by a pneumatic drive, in particular a pneumatic cylinder.
- the configuration just described makes it possible to fit the holders into the inner tool in a structurally simple manner retract or retract from the inner tool. In other words, the holders can be moved by means of the link drive just described.
- the fourth and the fifth link element can be rotated by means of the same, in particular pneumatic, drive.
- the device can further comprise a guiding tool for guiding the conductor pieces through slots of the stator core.
- the grooves serve in particular to accommodate the conductor pieces in the stator core.
- the guide tool can have several guide pins.
- the guide pins can be constructed and arranged to be at least partially inserted into the grooves.
- the guide pins are designed in particular to be guided through the grooves. In other words, the guide pins can be designed to be inserted into the grooves and/or through the grooves.
- the guide tool can be arranged in such a way that the guide pins can be inserted into the stator core (or its slots) from below.
- the guide pins of the guide tool are moved through the stator core in the direction of the conductor pieces to be inserted (which are located above the stator core or above its slots).
- the conductor pieces to be inserted can then be moved from above towards the stator core and thus towards the guide pins.
- the conductor sections and the guide pins can then be moved together through the stator core (or its slots). become .
- the guide pins are transported out of the stator core again.
- the guide pins can be arranged rigidly on the guide tool, so that a movement of the guide tool results in a movement of the guide pins. In other words, when the guide tool is moved, the guide pins move in the same way with .
- the guide pins can be designed to fix a paper sleeve at a predetermined position and/or in a predetermined shape within the corresponding groove.
- each guide pin can firmly press a paper tube within a groove at a predetermined position.
- Each guide pin can in particular be inserted through the paper tube so that the paper tube cannot deform due to the corresponding guide pin and the groove in which the paper tube is located, or the risk of deformation of the paper tube is at least minimized.
- the device can further comprise an insertion element for inserting the conductor pieces into the stator core.
- the insertion element can be designed to insert all conductor sections in the final configuration simultaneously into the stator core by means of a translatory linear movement. The insertion element thus contacts the conductor pieces from above and presses them into the stator core (or its slots) from above.
- the conductor pieces can slide at least in sections into the grippers of the inner tool. In other words, while the conductor pieces by means of the insertion from above in the Stator core are pushed in, they are at least partially contacted by means of the Grei fer of the inner tool.
- the insertion element can be sleeve-shaped and in particular can be slipped over the inner tool. In other words, the insertion element can be pushed over the cylindrical inner tool.
- the insertion element and the inner tool can be arranged coaxially to one another and can be designed to be movable along the same coaxial movement axis.
- the insertion element and the inner tool can be coupled to one another so that the insertion element and the inner tool can be moved by means of the same drive (e.g. pneumatic drive). It is also conceivable that the inner tool and the insertion element are moved by means of separate drives.
- the first holding device can include at least one special gripping unit for gripping and moving at least one conductor section that differs from the other conductor sections in terms of its shape, in particular the number of legs. As described above, such a special pin can have, for example, only one leg.
- the special gripping unit can be fixed to a gripping unit.
- the special gripping unit can be moved in particular by means of the first holding unit on which the special gripping unit is arranged. In other words, the special gripping unit moves in particular with the first holding unit which it is arranged.
- the special gripping unit can in particular be moved parallel to the radial direction. It is conceivable that the special gripping unit and the first holding unit, on which the special gripping unit is arranged, are designed in one piece.
- the special gripping unit can be designed to grip a special pin in the same way as is described for gripping a gripper unit.
- the special gripping unit can have the elements or components described above in connection with gripping a gripping unit (e.g. gripping jaw, link drive for gripping, etc.).
- the second holding device can comprise at least one special holding unit for holding and moving at least one conductor section, which differs from the other conductor sections in terms of its shape, in particular the number of legs.
- a special pin can have, for example, only one leg.
- the special holding unit can be fixed to a second holding unit.
- the special holding unit can be moved in particular by means of the second holding unit on which the special holding unit is arranged. In other words, the special holding unit moves in particular with the second holding unit on which it is arranged.
- the special holding unit can be moved parallel to the movement path of the second holding unit on which it is arranged. It is conceivable that the special holding unit and the second holding unit, on which the special holding unit is arranged, are designed in one piece.
- the special holding unit can be designed to hold a special pin in the same way as is described when holding a second holding unit. Analogously to a second holding unit, the special holding unit can have a fork-like shape.
- the problem to be solved is solved by a method for equipping a stator core with a plurality of conductor pieces with the features of the independent claim.
- the method includes arranging the conductor pieces in a starting position on a sixth circular path around a third center point.
- the conductor pieces are arranged in a geometric orientation (rotational position) which corresponds to the orientation in a final configuration in the stator core.
- the method further comprises simultaneously moving the conductor pieces from the starting position inwards from the sixth circular path to a final position, the conductor pieces being arranged in the final position in the final configuration in which they are also in the state inserted into the stator core.
- the ladder sections are moved from the starting position to the end position exclusively in a linear translational manner.
- Midpoint and the third midpoint on an axis be arranged, which is arranged in particular orthogonally to the radial direction and the movement paths of the second holding units.
- the axis on which the center points are arranged runs in the vertical direction or vertical direction .
- each conductor section is moved from the starting position to the end position by guiding each of its legs in a straight line in a linear translatory movement.
- Guided in a straight line means that each leg of a moving conductor section is guided along a straight line.
- the elements described above in connection with the device can be used to implement such a linear guidance (e.g. first holding units, second holding units, grippers, holders, etc.).
- the procedure consists of the following steps:
- fixation of a leg can be gripping and/or clamping.
- each piece of conductor along a straight line takes place and the rotational position of the respective conductor section (relative to its leg longitudinal axis (n)) is not changed during the movement.
- the conductor pieces are not rotated during their movement; wherein the conductor sections are fixed during the movement, as described above, by means of first holding units and second holding units.
- the movement from the starting position to the end position is carried out with an external tool, which in particular has first holding units and second holding units;
- the respective first holding unit is designed to grip one leg along the length of a conductor piece designed as a hairpin, and the respective second holding unit is designed to hold the other leg of the hairpin at its stator-side end (opposite the connecting section). to contact .
- the method can further include the steps:
- the conductor pieces can each be fixed on each of their legs, at a number of locations on the leg that are spaced apart from one another, by means of corresponding grippers arranged on the inner tool. Detaching the outer tool from the ladder pieces. The first holding units and the second holding units can be released simultaneously or one after the other.
- guide pins are first inserted from below into the slots of the stator core so that they are arranged in the slots and are moved in the vertical direction when inserting the conductor pieces in the same direction as the conductor pieces and are thereby moved out of the stator core.
- the inner tool is no longer moved after it has been equipped with conductor pieces and remains in a first position (ie remains in place). After equipping the inner tool, the conductor pieces can then be transferred from the inner tool to the first position (i.e. “on the spot”) in the stator core.
- the inner tool fitted with the conductor sections i.e. after the transfer of the conductor sections to the inner tool
- the second position is arranged at a distance from the first position.
- the second Position spaced apart from the device described above.
- the conductor pieces are arranged in the inner tool, in particular in the final configuration.
- the conductor pieces arranged in the final configuration can be moved to a different location with the inner tool before the conductor pieces are inserted into the stator core, so that the conductor pieces arranged in the final configuration can be inserted at a different location, in particular at a distance from the one described above Device can be implemented.
- the inner tool equipped with the conductor pieces in the final configuration can be transferred to the second position by means of a transfer device.
- the transfer device can be designed separately from the device described above. However, it is also conceivable that the transfer device can be a component of the device described above.
- An insertion device separate from the device described above can be provided for inserting the conductor pieces arranged in the inner tool in the final configuration into the stator core.
- the insertion device can be part of the transfer device.
- the inserting device can be an inserting element have, which can be formed analogously to the insertion element of the device described above.
- the inner tool After the conductor pieces have been inserted into the stator core at the second position, the inner tool, which is now unequipped, can be moved/transferred back to the first position (or location). At the first position, conductor pieces can again be transferred from the outer tool to the inner tool. In other words, the inner tool can be fitted with conductor pieces again at the first position.
- the conductor pieces are introduced into the stator core from above by means of a linear translatory movement relative to the stator core.
- the elements described above in connection with the device can be used (e.g. insertion element, guide tool, guide pins, etc.).
- the conductor pieces can be moved into the stator core in particular by means of an insertion element which can be designed in the manner of a sleeve and can be slipped over the inner tool in the vertical direction.
- a device with the features described above can be used to carry out the method.
- Fig. 1 shows a detail of a perspective sectional view of a device according to the invention
- Fig. 2 shows a sketch of the functional principle of the device according to FIG. 1;
- Fig. 3 shows a section of a perspective view of an assembly device
- Fig. 4 shows a perspective sectional view of part of the device according to FIG. 1;
- Fig. 5 shows a perspective view of a first holding unit
- Fig. 6 shows a section of a view from below of the first holding unit according to FIG. 5 in an open state
- FIG. 7 shows a section of a view from below of the first holding unit according to FIG. 5 in a closed state
- Fig. 8 shows a detail of a side view of a fixing element of the first holding unit according to FIG. 5;
- Fig. 9 shows a section of a perspective view from above of a special gripping unit;
- Fig. 10 shows a section of a perspective view from below of a special holding unit
- Fig. 16 schematically shows the insertion of conductor sections into a stator core using the device according to FIG. 1;
- Fig. 17 is a perspective view of another embodiment of the first holding unit.
- Fig. 18 shows a detail of a perspective view of a further exemplary embodiment of the first holding device.
- FIG. 1 shows a detail of a perspective sectional view of a device 10 according to the invention for equipping a stator core 12 (not shown) with a large number of conductor pieces 14 .
- the conductor pieces 14 are in the form of hairpins with a rectangular Conductor cross-section formed.
- the hairpins each have two legs 16 which are connected to one another via a connecting section 13 .
- the conductor pieces 14 in the form of hairpins are therefore U-shaped.
- the device 10 has a first holding device 18 for gripping and moving the conductor sections 14 .
- the first holding device 18 has a plurality of first holding units 20 .
- the device 10 also has a second holding device 36 for holding and moving the conductor sections 14 .
- the second holding device 36 has a plurality of second holding units 38 .
- the second holding units 38 have a fork-like shape.
- the legs 16 of the conductor sections 14 are clamped into the fork-shaped second holding units 38 with their end remote from the connecting section 13 .
- the device 10 further includes an internal tool 84 for receiving the conductor pieces 14 in a final configuration 32 .
- the inner tool 84 is shown only schematically in the present case.
- the final configuration 32 means the final arrangement and orientation of the conductor sections 14 used in the stator core 12 .
- FIG. 2 shows a sketch of the functional principle of the device 10 according to FIG.
- the first holding units 20 are arranged in a starting position 22 (on the outside) on a first circular path 24 around a first center point 26 .
- the first holding units 20 arranged in a circle are indicated by only two sketched first holding units 20 .
- the first holding units 20 can be moved into an end position 28 (on the inside), the first holding units 20 being arranged in the end position 28 on a second circular path 30 around the first center point 24 .
- the first holding units 20 can be moved along a radial direction 34 .
- the first holding units 20 can be moved along the radial direction 34 between the starting position 22 and the end position 28 .
- the radial direction 34 runs in a straight line from the first center point 26 . In FIG. 1, this is indicated by an arrow with reference number 34 .
- Each first holding unit 20 is designed to fix at least one conductor piece 14 to be inserted into the stator core 12 on its leg 16 in a geometric alignment that corresponds to the alignment of the end configuration 32 in the stator core 12 .
- each first holding unit 20 is designed to fix four conductor sections 14 in a gripping manner on their legs 16 .
- the legs 16 of the conductor pieces 14 are arranged in a row along the radial direction 34 .
- Each first holding unit 20 In the present case, each grips a leg 16 of the four conductor sections 14 arranged in a row.
- Each gripper unit 20 is fitted with the conductor sections 14 in the starting position 22 so that these are fixed by means of the first holding units 20 .
- Each first holding unit 20 moves from the starting position 22 to the end position 28 .
- the conductor sections 14 fixed by means of the first holding units 20 are moved accordingly.
- the movement of the first holding units 20 and thus also of the conductor sections 14 corresponds to a linear translatory movement.
- a linear translatory movement means a linear displacement without changing the orientation.
- the first holding units 20 and the conductor sections 14 are moved in a straight line and are not rotated in the process. D. H . the orientation of the conductor sections 14 is not changed during their movement by means of the first holding units 20 .
- the second holding units 38 are arranged in a starting position 40 on a third circular path 42 around a second center point 44 .
- the second holding units 38 arranged in a circle are indicated by only two sketched second holding units 38 .
- the second holding units 38 can be moved into an end position 46, the second holding units 38 being arranged in the end position 46 on a fourth circular path 48 around the second center point 44.
- the second holding units 38 can be moved along a movement path 52 .
- the second holding units 38 can be moved between the starting position 40 and the end position 46 along the movement path 52 .
- the movement paths 52 of the second holding units 38 run tangentially to a fifth circular path 54 around the second center point 44 . In other words, the movement paths 52 correspond to tangents on a fifth circular path 54 .
- D. H Each path of movement 52 can be described by a straight line that touches the fifth circular path 54 at a point.
- FIG. 2 illustrates the movement sequences of the first holding units 20 and the second holding units 38 in a sketched plan view.
- the first center point 26 corresponds to the second center point 44 .
- the first center point 26 and the second center point 44 are identical in the top view shown.
- the first circular path 24 has the largest diameter. In other words, the first circular path 24 is the outermost.
- the second, third, fourth and fifth circular paths 30 , 42 , 48 , 54 each have a diameter that becomes smaller in the order listed. In other words, the diameter of the circular paths 24 , 30 , 42 , 48 , 54 becomes smaller and smaller from the first circular path 24 to the fifth circular path 54 .
- the orbits are concentric arranged to each other, ie have the same center point.
- Each second holding unit 38 is designed to fix at least one conductor piece 14 to be inserted into the stator core 12 on its leg 16 in a geometric alignment that corresponds to the alignment of the end configuration 32 in the stator core 12 .
- each second holding unit 38 is designed to clamp four conductor sections 14 in place on their legs 16 .
- the legs 16 of the conductor sections 14 are arranged in a row 17 .
- Each second holding unit 38 is fitted with the conductor sections 14 in the starting position 40 so that this is fixed by means of the second holding unit 38 . Every second holding unit 38 moves from the starting position 40 to the end position 28 .
- the conductor sections 14 fixed by means of the second holding units 38 are moved accordingly.
- the movement of the second holding units 38 and thus also of the conductor sections 14 corresponds to a linear translatory movement.
- a linear translatory movement means a linear displacement without changing the orientation.
- the second holding units 38 and the conductor sections 14 are moved in a straight line and are not rotated in the process. D. H . the orientation of the conductor sections 14 is not changed during their movement by means of the second holding units 38 .
- the conductor pieces 14 are initially arranged in a starting position 120 on a sixth circular path 122 around a third center point 124 in a geometric alignment that corresponds to the subsequent alignment in the end configuration 32 in the stator core 12 . Subsequently, the conductor sections 14 are simultaneously moved into an end position 126 by means of the first holding units 20 and the second holding units 38 described above. The conductor pieces 14 in the final position 126 are in the final configuration 32 . In other words, in the final position 126 the conductor pieces 14 form a basket that corresponds to the final configuration 32 of the conductor pieces 14 in the stator core 12 . In the end configuration 32 the conductor sections 14 are also arranged in a circular manner.
- Each ladder section 14 is linearly translated from the start position 120 to the end position 126 .
- each conductor section 14 undergoes an exclusively linear displacement along a straight line.
- D. H each ladder section 14 is not rotated during movement from the starting position 120 to the ending position 126 .
- the first center point 26 corresponds to the second center point 44 and the third center point 124 .
- the first center point 26, the second center point 44 and the third center point 124 are identical.
- the first midpoint 26, the second midpoint 44, and the third midpoint 124 are arranged on a straight line that runs orthogonally to the plane of the drawing in FIG.
- Each conductor piece 14 designed as a hairpin is fixed in that its first leg 16 is fixed by means of a first holding unit 20 and its second leg 16 by means of a second holding unit 38 .
- the conductor piece 14 fixed in this way is, as described above, moved linearly translationally inwards.
- the first holding unit 20 which fixes the first leg 16 of the conductor section 14
- the second holding unit 38 which fixes the second leg 16 of the same conductor section 14 , move parallel to one another.
- FIG. 3 shows a section of a perspective view of an assembly device 56 .
- the mounting device 56 in the present exemplary embodiment serves to mount the first holding device 18 and the second holding device 36 with conductor sections 14 .
- the pick-and-place device 56 is gripper-based in the form of two robot grippers 57 .
- Each robot gripper 57 is designed to be able to grip and move (handle) at least one conductor section 14 on its leg 16 .
- the conductor pieces 14 are not shown in FIG. It is conceivable that the first holding device 18 is rotated relative to the placement device 57 during the placement by means of the placement device 56 . Alternatively or in addition to this, the second holding device 36 can be rotated relative to the placement device 56 .
- the first holding units 20 are elongate and arranged in a circle in the first holding device 18 .
- the longitudinal axis of each first holding unit 20 runs along the radial direction 34 , with the gripping end 21 of the first holding unit 20 being directed radially inwards (that is to say counter to the radial direction 34 ).
- FIG. 4 shows a perspective sectional view of part of the device 10 according to FIG. FIG. 4 illustrates the link drive of the first holding units 20 and the second holding units 38 in each case.
- Each gripper unit 20 has a first extension 58 which engages in a first link track 60 .
- the first link tracks 60 are arranged in a first link element 62 .
- the first link element 62 is designed in the manner of a disk.
- the first extension 58 is only indicated in FIG.
- the first holding units 20 can be moved along the radial direction 34 by a rotational movement of the first link element 62 .
- the first holding units 20 are each guided via a first guide device 64 in such a way that they can only be moved along the radial direction 34 .
- the first guide device 64 is designed in the form of a slot running along the radial direction 34 and into which the first extension 58 engages.
- Each second holding unit 38 has a second extension 66 which engages in a second link track 68 .
- the second link tracks 68 are arranged in a second link element 70 .
- the second link element 70 is designed in the manner of a disk.
- the second extension 66 is only indicated in FIG.
- the second holding units 38 can be moved along the radial direction 34 by a rotational movement of the second link element 70 .
- the second holding units 38 are each guided via a second guide device 72 in such a way that they can only be moved along the radial direction 34 .
- the second guide device 72 is in the form of a slot running along a straight line, in which the second extension 66 engages.
- FIG. 5 shows a perspective view of the first holding unit 20 .
- the first holding unit 20 is elongate and has a first gripping jaw 74 and a second gripping jaw 73 (cf. FIGS. 6 and 7).
- the first gripping jaw 74 is arranged pivotably on the first holding unit 20 .
- the second gripping jaw 73 is fixedly arranged on a third guide device 82 (described below).
- the gripping of the first holding unit 20 is illustrated in FIGS. For the sake of clarity, only one conductor piece 14 is shown in FIG.
- FIG. 6 shows a section of a view from below of the first holding unit 20 according to FIG. 5 in an open state.
- An opened state means a state of the first holding unit 20 in which the grip of the first holding unit 20 is released, i. H. the first holding unit 20 does not grip.
- the first gripping jaw 74 has a third extension 76 which engages in a third link track 78 .
- the third link track 78 is arranged in a third link element 80 .
- the first gripping jaw 74 is pivotably mounted by means of a bearing 75 in the first holding unit 20 (or the third guide device 82).
- the third extension 76 moves to the right in FIG. This causes the first gripping jaw 74 to swing open about the bearing 75.
- Pivoting is indicated in FIG. 6 by a curved arrow with the reference number 77 .
- the first gripping jaw 74 By pivoting the first gripping jaw 74 in direction 77, it moves away from the second gripping jaw 73 fixedly arranged on the third guide device 82, as a result of which the grip of the first holding unit 20 is released.
- the first holding unit 20 can be transferred to the open state in which the third link element 80 is moved counter to the radial direction 34 .
- the radial direction 34 is indicated here with an arrow.
- FIG. 7 shows a section of a view from below of the first holding unit 20 according to FIG. 5 in a closed state.
- the first holding unit 20 can be transferred to the closed state by the third link element 80 being moved in the radial direction 34 (upward in FIG. 7).
- a movement of the third gate element 80 in the radial direction 34 causes the third extension 76 to move to the left in FIG.
- This causes the first gripping jaw 74 to pivot about the bearing 75 .
- the pivoting is indicated in FIG. 6 by a curved arrow with reference number 79 .
- the third link element 80 is guided via the third guide device 82 in such a way that the third link element 80 can only be moved along the radial direction.
- the third link element 80 can be moved by means of the shaft 69 .
- the shaft 69 is aligned along the radial direction 34 and can be moved along it, for example by means of a servomotor (not shown).
- FIG. 8 shows a section of a side view of a fixing element 128 of the first holding unit 20 according to FIG figure 5 .
- the fixing element 128 is comb-shaped.
- the fixing element 128 has a plurality of contacting elements 130 . These are designed to contact at least one conductor piece 14 in a number of areas of the leg 16 that are spaced apart from one another. In this way, conductor pieces 14 whose legs 16 are arranged in a row 17 can be fixed.
- the contacting elements 130 have three different lengths.
- the shortest contacting elements 130 make contact with the same leg 16 of a conductor piece 14, which is shown on the extreme right in FIG.
- the leg 16 adjacent to this leg 16 to the left in FIG. 8 , is contacted by the next longer contacting elements 130 .
- the longest contacting elements 130 contact the next leg 16 adjacent to the left in FIG. In other words, the longest contacting elements 130 make contact with the leg 16 of a conductor piece 14 shown on the extreme left in FIG.
- the contacting elements 130 of the same length contact the same leg 16 of a conductor piece 14 .
- each leg 16 can be fixed separately. In this way, a secure fixation of all conductor sections 14 gripped by means of the first holding unit 20 can be guaranteed.
- a backdrop drive has several curved link tracks arranged on a circular path.
- the link tracks are arranged on a disk-like link element.
- An extension of an element to be moved by means of the link drive engages in each of the link tracks.
- the element to be moved is in each case guided in a guide device.
- the extension of the element to be moved is moved along the respective link path.
- the respective element to be moved is urged by the respective guide device onto a path running in a straight line. In this way, a rotational movement can be transformed into a linear movement.
- FIG. 9 shows a section of a perspective view from above of a special gripping unit 114 .
- the special gripping unit 114 is designed to grip and move at least one special pin.
- a special pin is a conductor section 14 which differs from the other conductor sections 14 arranged on the same circular path, in particular in the shape and/or number of its legs 16 .
- the special pin shown has two legs 16 .
- the special gripping unit 114 is arranged on a gripping unit 20 and is moved by means of this gripping unit 20 .
- the first holding unit 20 represents the drive for the special gripping unit 114 arranged on it. So they move Special gripping unit 114 and the first holding unit 20, on which the special gripping unit 114 is arranged, on paths arranged parallel to one another, each of which corresponds to a straight line.
- the special gripping unit 114 is designed analogously to the gripping unit 20 .
- FIG. 10 shows a section of a perspective view from below of a special holding unit 116 .
- the special holding unit 116 is designed to hold and move at least one special pin.
- the special holding unit 116 is at a second
- Holding unit 38 is arranged and is moved by means of this second holding unit 38 .
- the second holding unit 38 represents the drive for the special holding unit 116 arranged on it.
- the special holding unit 116 and the second holding unit 38, on which the special holding unit 116 is arranged thus move on paths which are arranged parallel to one another and which each correspond to a straight line.
- the special holding unit 116 is formed in one piece with the second holding unit 38 on which the special holding unit 116 is arranged.
- FIG. 11 to FIG. 16 show diagrammatically how conductor sections 14 are inserted into a stator core 12 by means of the device 10 according to FIG.
- FIGS. 11 to FIG. 16 show diagrammatically how conductor sections 14 are inserted into a stator core 12 by means of the device 10 according to FIG.
- FIGS. 11 to FIG. 16 show diagrammatically how conductor sections 14 are inserted into a stator core 12 by means of the device 10 according to FIG.
- FIGS. show diagrammatically how conductor sections 14 are inserted into a stator core 12 by means of the device 10 according to FIG.
- FIGS For the sake of clarity, only part of a sectional view of the device 10 is shown in FIGS. Only a first holding unit 20 , which is intended to illustrate all first holding units 20 , and a second holding unit 38 , which is intended to illustrate all second holding units 38 , are shown schematically.
- the conductor section 14 fixed by the gripper unit 20 and the second holding unit 38 on its legs 16 is intended to illustrate all conductor
- the conductor sections 14 have already been inserted into the first holding units 20 and the second holding units 38 . This can be done, for example, by the placement device 56 shown in FIG.
- the first holding units 20 and the second holding units 38 are moved towards the inner tool 84 as described above.
- the conductor sections 14 fixed in the first holding units 20 and the second holding units 38 are moved in the direction of the inner tool 84 into their end configuration 32 (see FIG. 12).
- the conductor pieces 14 are fixed using the inner tool 84 .
- the second holding units 38 release the fixed conductor pieces 14 .
- the second holding units 38 release the fixed conductor pieces 14 .
- the second holding units 38 are first moved in the direction of the stator core 12 for this purpose, so that the second holding units 38 hold the fixed conductor pieces 14 or whose leg 16 is released again (see FIG. 13). After the second holding units 38 have released the fixed conductor pieces 14, the second holding units 38 are moved radially outwards (see FIG. 14).
- stator 12 is moved in the direction of the inner tool 84 .
- the conductor pieces 14 are now moved in a translatory manner in the direction of the stator core 12 by means of an insertion element 112, shown only schematically in FIGS. 11 to 16, and are inserted into the stator core 12 (or slots of the stator core).
- connection sections 13 of the conductor pieces 14 approach the first holding units 20 during insertion into the stator core 12, they release the conductor pieces 14 and are moved radially outwards (see FIG. 15).
- Guide tool 106 supports that from below into the Slots of the stator core 12 is introduced and serves as a guide for the conductor pieces 14 during insertion. During the introduction of the conductor pieces 14 into the slots of the stator core 12 , the guide tool is moved down again out of the stator core 12 .
- the guide tool 106 is shown only schematically in FIGS.
- the insertion element 112 presses the conductor pieces 14 into their final position in the stator core 12 (see FIG. 16).
- the inner tool 84 , the insertion element 112 and the guide tool 106 are not moved away from the stator core 12 , so that the stator core 12 , which has been fitted with the conductor pieces 14 , can be removed from the device 10 .
- FIG. 17 shows a perspective view of a further exemplary embodiment of the first holding unit 20 .
- the first extension 58 of the first holding unit 20 is designed to engage in first link tracks 60 of a first link element 62 .
- First guide devices 64 are designed in the form of elongated holes, in each of which the first extension 58 of the first holding unit 20 is guided along the radial direction 34 .
- a rotation of link element 62 moves first extensions 58 and thus first holding unit 20 along guide devices 64 (see FIG. 18).
- only one conductor section 14 is shown in FIG.
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102021122587.6A DE102021122587B3 (de) | 2021-09-01 | 2021-09-01 | Vorrichtung und Verfahren zur Positionierung mehrerer Leiterstücke zur Bestückung eines Statorkerns mit Leiterstücken |
| PCT/EP2022/071302 WO2023030782A1 (de) | 2021-09-01 | 2022-07-29 | Vorrichtung und verfahren zur bestückung eines statorkerns mit leiterstücken |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4165761A1 true EP4165761A1 (de) | 2023-04-19 |
Family
ID=83059361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22758454.7A Pending EP4165761A1 (de) | 2021-09-01 | 2022-07-29 | Vorrichtung und verfahren zur bestückung eines statorkerns mit leiterstücken |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4165761A1 (de) |
| DE (1) | DE102021122587B3 (de) |
| WO (1) | WO2023030782A1 (de) |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4259127B2 (ja) * | 2002-07-30 | 2009-04-30 | アイシン・エィ・ダブリュ株式会社 | モータの製造方法 |
| WO2014010642A1 (ja) * | 2012-07-12 | 2014-01-16 | 本田技研工業株式会社 | 電気導体の整列装置及びその整列方法 |
| JP6591658B2 (ja) | 2016-03-22 | 2019-10-16 | 本田技研工業株式会社 | 整列方法および整列装置 |
| CA3035592A1 (en) | 2016-09-02 | 2018-03-08 | Ats Automation Tooling Systems Inc. | Method and system for assembling hairpin conductors with a stator core |
| JP6378375B2 (ja) | 2017-02-14 | 2018-08-22 | 本田技研工業株式会社 | 電気導体の整列方法及びその装置 |
| CN111164857B (zh) | 2017-06-20 | 2022-11-01 | 格劳博-沃克有限责任两合公司 | 一种在电机的机器零件中插入导电体的方法和装置 |
| JP6629367B2 (ja) | 2018-02-23 | 2020-01-15 | 本田技研工業株式会社 | 集合装置及び方法 |
| JP2019161865A (ja) * | 2018-03-13 | 2019-09-19 | 本田技研工業株式会社 | 回転電機用ステータの製造装置、及び回転電機用ステータの製造方法 |
| DE102018121745A1 (de) * | 2018-09-06 | 2020-03-12 | Aumann AG | Verfahren und Vorrichtung zum Herstellen einer Anordnung von Spulenelementen für eine Steckspule einer elektrischen Maschine |
| DE102019204379A1 (de) | 2019-03-28 | 2020-10-01 | Thyssenkrupp Ag | Greifervorrichtung für Kupferstäbe |
| DE102019114221A1 (de) | 2019-05-28 | 2020-12-03 | Grob-Werke Gmbh & Co. Kg | Greifvorrichtung und Greifverfahren für Hairpins |
-
2021
- 2021-09-01 DE DE102021122587.6A patent/DE102021122587B3/de active Active
-
2022
- 2022-07-29 WO PCT/EP2022/071302 patent/WO2023030782A1/de not_active Ceased
- 2022-07-29 EP EP22758454.7A patent/EP4165761A1/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE102021122587B3 (de) | 2022-12-01 |
| WO2023030782A1 (de) | 2023-03-09 |
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