US 11,722,041 B2
Slotted stator core and additive manufacturing method for production
Edward B. Manring, Columbus, IN (US); Ross A. Phillips, Columbus, IN (US); and Steven E. Ferdon, Columbus, IN (US)
Assigned to Cummins Inc., Columbus, IN (US)
Filed by Cummins Inc., Columbus, IN (US)
Filed on Jul. 23, 2020, as Appl. No. 16/936,913.
Claims priority of provisional application 62/882,635, filed on Aug. 5, 2019.
Prior Publication US 2021/0044185 A1, Feb. 11, 2021
Int. Cl. H02K 15/085 (2006.01); H02K 1/16 (2006.01); B33Y 80/00 (2015.01)
CPC H02K 15/085 (2013.01) [H02K 1/16 (2013.01); B33Y 80/00 (2014.12)] 20 Claims
OG exemplary drawing
 
14. A method of manufacturing a solenoid stator core, comprising:
forming a lower wall on a manufacturing supporting structure using an additive manufacturing process;
forming a plurality of outer wall segments upwardly from the lower wall using the additive manufacturing process;
forming a plurality of inner wall segments upwardly from the lower wall using the additive manufacturing process;
wherein forming the plurality of outer wall segments includes forming a plurality of outer slots between adjacent outer wall segments, and forming the plurality of inner wall segments includes forming a plurality of inner slots between adjacent inner wall segments, each of the outer slots being radially aligned with an inner slot relative to a central axis of the stator core; and
removing the solenoid stator core as a single piece from the manufacturing supporting structure on which the solenoid stator core was formed.