WO2019223832A1 - Empilage et restriction de tôles de rotor pour machine électrique, machine électrique et procédé de fabrication d'un rotor - Google Patents

Empilage et restriction de tôles de rotor pour machine électrique, machine électrique et procédé de fabrication d'un rotor Download PDF

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Publication number
WO2019223832A1
WO2019223832A1 PCT/DE2019/100393 DE2019100393W WO2019223832A1 WO 2019223832 A1 WO2019223832 A1 WO 2019223832A1 DE 2019100393 W DE2019100393 W DE 2019100393W WO 2019223832 A1 WO2019223832 A1 WO 2019223832A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotor
laminations
rotor laminations
plate
recesses
Prior art date
Application number
PCT/DE2019/100393
Other languages
German (de)
English (en)
Inventor
Philipp Kraft
Christian Lutz
Original Assignee
Schaeffler Technologies AG & Co. KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Schaeffler Technologies AG & Co. KG filed Critical Schaeffler Technologies AG & Co. KG
Publication of WO2019223832A1 publication Critical patent/WO2019223832A1/fr

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
    • H02K2201/06—Magnetic cores, or permanent magnets characterised by their skew
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
    • H02K2201/09—Magnetic cores comprising laminations characterised by being fastened by caulking

Definitions

  • the present invention relates to a rotor for an electric machine, such as an electric motor, with a plurality of rotor laminations, which are designed for holding permanent magnets and for attachment to a rotor shaft, at least two rotor laminations at least rotationally fixed and advantageously axially fixed to each other are anchored. Furthermore, the present invention relates to a method for manufacturing a rotor for an electric machine.
  • the laminated core is formed of a plurality of axially stacked rotor or stator laminations for a rotor or stator of an electric machine with peripheral outer sections and inwardly integrally adjoining inner sections, along along an axially parallel generatrix of the laminated core packet bundle of at least one sheet are arranged differently far prominent outer edge.
  • the prior art DE 10 2016 216 773 A1 relates to a rotor lamination package and a laminated stator core for an electrical machine.
  • the laminated rotor core comprises a plurality of rotor laminations stacked congruently in a stacking direction, wherein each of the rotor laminations has a central bore for attachment to a rotor shaft of the electric machine.
  • the diameter of the central bore varies such that tabs, grooves and recessed areas are formed in the circumferential direction, and the diameter is greater than the diameter of the rotor shaft in the region of the grooves and the reset areas, whereas the diameter in the region of the tabs is smaller as the diameter of the rotor shaft.
  • the tabs and grooves of adjacent rotor laminations are offset in the circumferential direction in such a way that when the rotor laminations are pushed onto the rotor shaft, the tabs can be plastically deformed by the rotor shaft, can thereby be bent into the slots and be frictionally locked can be attached to the rotor shaft.
  • the stator core can be done in a similar way be secured by tabs and grooves in a housing of an electrical machine.
  • the object of the invention is achieved in that, for anchoring to each other in the rotor laminations, preferably all rotor laminations, such cup-shaped or hat-shaped passages have recesses on one rotor-plate side and tolerances on the other rotor-plate side own, are present, which are matched in their dimensions for attachment to each other.
  • the inner diameter of the recess of the one rotor plate is matched to the outer diameter of the elevations of the other rotor plate for effecting a fastening, for example by forcing a press fit.
  • the inside diameter of the recess of the one rotor plate is opposite the outside diameter.
  • the size of the other rotor plate accordingly smaller in order to cause a press connection. This has the advantage that no screws are necessary to form the at least one rotor laminated core. Furthermore, a rotation of the individual rotor laminations to each other is not possible.
  • first rotor laminations form a first rotor laminated core and / or a plurality of second rotor laminates form a second rotor laminar core.
  • the individual sheets are pressed into each other in exactly one position.
  • the fixation takes place via the passages, in other words, the depressions or elevations of the respective rotor plate sides.
  • the packaging and entanglement of rotor plates is prescribed by a defined arrangement of depressions and elevations. This simplifies both the arrangement and the assembly of the individual rotor laminations.
  • further rotor laminations form further n-rotor laminations. This has the advantage that assembling all the trained rotor laminations forms an entire rotor.
  • a hole formed as a hole, for example as a through hole, the inner diameter so on a grandeur of the rotor plate of the first rotor laminated core is agreed that there is a force and / or form fit between them, for example by means of a press fit.
  • an interlocking between the rotor lamination packages can be realized with such a clearance / recess combination by respectively pressing the obtained through-part into the corresponding release position.
  • the passages and recesses are combined in the individual patterns in such a way that a defined entanglement between the individual rotor laminations is possible. By this entanglement is again ensured / ensured that the rotor laminations can not rotate each other even during operation. Furthermore, it is advantageous if there are corresponding clearances in position in the rotor laminations, preferably all rotor laminations of a rotor laminations.
  • the passages of the one rotor lamination stack and the clearances of the adjacent rotor lamination stack are offset relative to one another in the circumferential direction by an angle a relative to their position relative to the lamination device present on the rotor laminations for flattening the permanent magnets.
  • the flattening devices expediently include recesses in the respective rotor laminations. It is advantageous if the angle a is shifted in a range of 1, 5 degrees to 2.5 degrees, preferably 2 degrees.
  • the invention relates to an electric machine with a rotor according to one of the preceding aspects.
  • the invention relates to a method for Fierstellen a rotor for an electric machine, such as in the manner of an electric motor, in which at least two rotor laminations of a plurality of rotor plates, which are designed for the folding of permanent magnets, at least rotatably anchored to each other in a first Fier eins intimid are, with each other, which have recesses on one side of the rotor lamination sheet and on the other side of the rotor lamination, connected / anchored with each other, wherein the recesses and the sublime are matched in their dimensions for attachment to each other.
  • the inner diameter of the recesses of one rotor lamination is matched to the outer diameter of the other rotor lamination for effecting an attachment.
  • the multiplicity of rotor laminations form one or more rotor laminations which, in a second production step, form a first rotor laminations package with a second rotor laminations package by compressing the grandeur of the first rotor laminations.
  • terblechpers is connected in a trained as a hole exemption of the second Rotorblechpa- kets.
  • the rotor laminations are then joined together / assembled and fastened to a rotor shaft.
  • Such a method ensures a simplified manufacture of the rotor.
  • the joining together of the individual rotor laminations with one another to form a rotor laminating unit is simplified and, on the other hand, the assembly of the individual rotor laminations into a rotor is simplified.
  • a corresponding predefined position of the individual rotor laminations or rotor laminations can be ensured / ensured to one another.
  • FIG. 1 shows a cross section of a rotor.
  • Fig. 2 is a front view of a rotor sheet
  • Fig. 3 is an oblique view of the rotor plate
  • FIG. 1 shows a cross-sectional view of a rotor 1 having a multiplicity of rotor laminations 2 which are designed to hold permanent magnets (as shown in FIG. 2) in correspondingly illustrated recesses 3 and for fastening to a rotor shaft 4.
  • At least two rotor laminations 2 are at least rotationally fixed in this case. anchored to each other.
  • In the rotor laminations 2 are such anchorages to each other 5 such that on one side of the rotor plate 2 recesses 6 and on the other side of the rotor plate 2 majesties have 7, which are matched in their dimensions for attachment to each other.
  • a multiplicity of rotor laminations 2 are joined together to form a first rotor laminations 8.
  • four rotor laminations 8 are shown in Fig. 1. It can be seen that the elevations 7 of the pitches 5 of the first rotor plate 2 engage in the depressions 6 of the adjacent rotor plate 2.
  • the last rotor plate 2 of a rotor lamination stack 8 engages with its majesty 7 in the exemption 9 of the first rotor plate 2 of the second rotor lamination stack 8. In this way, both the rotor laminations 2 are interlocked with each other, as well as the individual Ro- torblechonge 8 are interlocked.
  • the rotor plate 2 shows a front view of a rotor plate 2.
  • the rotor plate 2 shows the recesses 3, which are designed for fastening and holding the permanent magnets.
  • the throws 5 and exemptions 9 are shown.
  • Fig. 3 shows an oblique front view of a rotor plate 2. Also in Fig. 3, the recesses 3 for holding and fixing the permanent magnets are shown. Corresponding to FIG. 2, the throws 5 and exemptions 9 are shown.
  • FIG. 4 shows a cross-section along the line IV of FIG. 2.
  • two rotor laminations 2 with corresponding recesses 3 for holding and fastening the permanent magnets can be seen.
  • Each rotor plate 2 has in each case an exemption 9 and an adjustment 5.
  • Each setting 5 has both a depression 6 on one side of the rotor lamination 2 and a sublime 7 on the other side of the respective rotor lamination 2.
  • the grandeur 7 of the first rotor lamination 2 is pressed into the recess 6 of the second rotor lamination 2 according to the arrow 10 ,
  • the individual rotor laminations 2 When joining the individual rotor laminations 2 to form a laminated rotor core 8, the individual rotor laminations 2 are pressed or pressed undiluted into one another. In the process, the grandeur 7 of the passage 5 presses into the depression 6 of the following rotor plate 2. 5 shows a section of the unassembled rotor laminations 8. In the frontal plane of the first three rotor laminations 8 seen from the left, the reliefs 9 of the assembled rotor laminations 2 can be seen. Likewise, the recesses 3 are shown for folding and fixing the permanent magnets. Both the first rotor lamination stack 8 and the second rotor lamination stack 8 show the depressions 6 and the raised areas 7 of the starting or end rotor lamination 2 in a ridge manner.
  • FIG. 6 shows a section of the rotor 1 with assembled rotor laminated cores 8.
  • the engagement of the raised areas 7 of the rotor sheet 2 of the first rotor core 8 is shown in the relief 9 of the adjacent rotor core 2 of the second rotor core 8.
  • Fig. 6 we are the recesses 3 of a rotor laminated core 8 to the recesses 3 of an adjacent rotor core 8 are rotated. Furthermore, it can be seen that the first rotor laminated core 8 is rotated in the same direction and at the same entanglement angle a relative to the second rotor core packet 8, as the second rotor core 8 for the third rotor core 8 and the third rotor core 8 for the fourth Rotor core 8.
  • FIG. 7 shows a cross section of the assembled rotor laminations 2 to form a complete rotor laminations 8, which is placed on the rotor shaft 4.
  • the individual rotor laminations 2 are shown, which mesh through their recesses 6 and sublimities 7.
  • the rotor laminations 2 formed by the rotor laminations 8 are shown.
  • the rotation of the ro- Torblechonge 8 to see each other.
  • the second rotor plate 2 is rotated by 2 ° to the first rotor plate 2.
  • the subsequent Ro- torblechwovene 8 by 4 ° or 6 °, based on the first rotor core 8, twisted.
  • FIG. 1 shows a cross section of the assembled rotor laminations 2 to form a complete rotor laminations 8, which is placed on the rotor shaft 4.
  • the individual rotor laminations 2 are shown, which mesh through their recesses 6 and sublimities 7.
  • FIG. 8 illustrates the joining together of the individual rotor laminations 2 to form a rotor lamination package 8.
  • the elevations 7 of one rotor lamin 2 are inserted into the depressions 6 of the following rotor lamin 2.
  • a rotor lamination stack 8 finally results.
  • Fig. 9 the assembly of the individual rotor laminations 8 to the entire rotor 1 is shown.
  • the elevations 7 of the first rotor lamination stack 8 are inserted into the release position 9 of the second rotor lamination stack 8 in accordance with the arrow 11.
  • the Verschränkungswinkel a adjustable.
  • an entanglement angle a of 2 ° is depicted.

Abstract

L'invention concerne un rotor (1) destiné à une machine électrique et comportant une pluralité de tôles de rotor (2) conçues pour supporter des aimants permanents (3) et pour être fixées à un arbre de rotor (4). Au moins deux tôles de rotor (2) sont fixées l'une à l'autre au moins solidairement en rotation. Pour fixer les tôles de rotor (2) les unes aux autres, des passages (5) en forme de cuvette ou de chapeau, qui présentent des évidements (6) sur un côté (2) des tôles de rotor et des saillies sur l'autre côté (2) des tôles de rotor, lesquels évidements et saillies ont des dimensions adaptées entre elles de manière à être fixés les uns aux autres. En outre, l'invention concerne également un procédé de fabrication d'un rotor (1) destiné à une machine électrique, procédé dans lequel, dans une première étape de fabrication, au moins deux tôles de rotor (2) d'une pluralité de tôles de rotor (2), conçues pour supporter des aimants permanents (3), sont fixées les unes aux autres au moins solidairement en rotation. Les passages (5) qui comportent des évidements (6) sur un côté (2) des tôles de rotor et des saillies (7) sur l'autre côté (2) des tôles de rotor, sont reliés entre eux. Les évidements (6) et les saillies (7) ont des dimensions adaptées entre elles de manière à être fixés les uns aux autres.
PCT/DE2019/100393 2018-05-22 2019-05-03 Empilage et restriction de tôles de rotor pour machine électrique, machine électrique et procédé de fabrication d'un rotor WO2019223832A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018112195.4A DE102018112195A1 (de) 2018-05-22 2018-05-22 Paketierung und Verschränkung von Rotorblechen für eine Elektromaschine, Elektromaschine und Verfahren zum Herstellen eines Rotors
DE102018112195.4 2018-05-22

Publications (1)

Publication Number Publication Date
WO2019223832A1 true WO2019223832A1 (fr) 2019-11-28

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Application Number Title Priority Date Filing Date
PCT/DE2019/100393 WO2019223832A1 (fr) 2018-05-22 2019-05-03 Empilage et restriction de tôles de rotor pour machine électrique, machine électrique et procédé de fabrication d'un rotor

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DE (1) DE102018112195A1 (fr)
WO (1) WO2019223832A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021100906A1 (de) 2021-01-18 2022-07-21 Schaeffler Technologies AG & Co. KG Rotorblechschnitt mit Verschränkung und Sicherstellung für verdrehte Stapelung zum Ausgleich Ebenheit von Unwucht
DE102021103679A1 (de) 2021-02-17 2022-08-18 Schaeffler Technologies AG & Co. KG Rotorblechschnitt mit Merkmalen zur Verschränkung verdrehter Stapelung sowie zum Ausgleich geometrischer Abweichungen
DE102022124180A1 (de) 2022-09-21 2024-03-21 Schaeffler Technologies AG & Co. KG Rotor, Fertigungsanordnung zur Herstellung eines Rotors, Verfahren zur Herstellung eines Rotors und elektrische Maschine
WO2024067918A1 (fr) 2022-09-27 2024-04-04 Schaeffler Technologies AG & Co. KG Rotor et machine électrique

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07322536A (ja) * 1994-05-23 1995-12-08 Yaskawa Electric Corp 積層鉄心およびその製造方法
DE202009007597U1 (de) 2009-05-28 2009-11-05 Karabeyaz, Aydin Blechpaket für einen Rotor oder Stator
JP2014128116A (ja) * 2012-12-26 2014-07-07 Toyota Industries Corp 永久磁石埋設型回転電機
US20160352165A1 (en) * 2015-05-29 2016-12-01 Toyota Jidosha Kabushiki Kaisha Laminated core for rotary electric machine
DE102016216773A1 (de) 2016-09-05 2018-03-08 Continental Automotive Gmbh Rotorblechpaket und Statorblechpaket für eine elektrische Maschine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07322536A (ja) * 1994-05-23 1995-12-08 Yaskawa Electric Corp 積層鉄心およびその製造方法
DE202009007597U1 (de) 2009-05-28 2009-11-05 Karabeyaz, Aydin Blechpaket für einen Rotor oder Stator
JP2014128116A (ja) * 2012-12-26 2014-07-07 Toyota Industries Corp 永久磁石埋設型回転電機
US20160352165A1 (en) * 2015-05-29 2016-12-01 Toyota Jidosha Kabushiki Kaisha Laminated core for rotary electric machine
DE102016216773A1 (de) 2016-09-05 2018-03-08 Continental Automotive Gmbh Rotorblechpaket und Statorblechpaket für eine elektrische Maschine

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