US 12,456,905 B2
Device for manufacturing a lamination stack
Patrick Vohlgemuth, Anais (FR)
Assigned to MOTEURS LEROY-SOMER, Angouleme (FR)
Filed by Moteurs Leroy-Somer, Angouleme (FR)
Filed on Jul. 19, 2023, as Appl. No. 18/223,879.
Claims priority of application No. 2207534 (FR), filed on Jul. 22, 2022.
Prior Publication US 2024/0030789 A1, Jan. 25, 2024
Int. Cl. B32B 41/00 (2006.01); B32B 37/00 (2006.01); H02K 15/021 (2025.01)
CPC H02K 15/021 (2025.01) [B32B 37/0046 (2013.01); B32B 2457/00 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A device for manufacturing a lamination stack (E) for a rotating electrical machine, each lamination comprising a plurality of lamination sectors with notches, the laminations having a central bore,
the device comprising a mandrel for receiving the stacked lamination sectors, the mandrel comprising:
a mandrel body provided with longitudinal slots,
bars received in the longitudinal slots of the mandrel body, the bars being magnetizable,
a magnetization system for the bars, and
alignment pins intended to be received in the notches of the laminations to align the notches.