US 12,341,381 B2
Method for producing a rotor, and rotor
Dirk Aringsmann, Holzkirchen (DE); Florian Beck, Freising (DE); and Andreas Jahnke, Munich (DE)
Assigned to Bayerische Motoren Werke Aktiengesellschaft, Munich (DE)
Appl. No. 17/924,216
Filed by Bayerische Motoren Werke Aktiengesellschaft, Munich (DE)
PCT Filed Apr. 19, 2021, PCT No. PCT/EP2021/060026
§ 371(c)(1), (2) Date Nov. 9, 2022,
PCT Pub. No. WO2021/228493, PCT Pub. Date Nov. 18, 2021.
Claims priority of application No. 10 2020 113 110.0 (DE), filed on May 14, 2020.
Prior Publication US 2023/0179046 A1, Jun. 8, 2023
Int. Cl. H02K 1/28 (2006.01); H02K 1/24 (2006.01); H02K 15/022 (2025.01)
CPC H02K 1/28 (2013.01) [H02K 1/24 (2013.01); H02K 15/022 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A method for producing a rotor, comprising the steps of:
providing lamella elements and arranging the lamella elements to form a lamella bundle, wherein the lamella bundle has webs;
arranging end plates at respective end faces of the lamella bundle, wherein the end plates axially support the lamella bundle;
axially pretensioning the lamella bundle by winding conductor material around the webs with sufficient pretension to substantially prevent deformation of the webs due to cooling of the lamella bundle after a rotor shaft is arranged in the lamella bundle; and
arranging the rotor shaft in the fixed or pretensioned lamella bundle.