Laminated core for electrical apparatus

Details Laminated core for electrical apparatus Laminated core for electrical apparatus

H - Electricity

02

K

26/113, 310/116

H02K 1/06 (2006.01) H02K 1/16 (2006.01) H02K 15/02 (2006.01)

Patent

CA 1183568

ABSTRACT OF THE DISCLOSURE A laminated core for an electrical machine is disclosed which comprises a plurality of annular lamina- tions. Each lamination is edge rolled from straight strips of magnetic material with teeth punched into one edge. Each lamination is slightly less than 360° in arcuate length, leaving a slight gap between its ends to allow the finished core to be accurately sized by com- pressing its outer surface. By punching the straight strips from sheet metal in such a way as to orient the grain structure in the direction of tooth extension and edge rolling the opposite edge, a selective grain orienta- tion can be achieved which is magnetically advantageous throughout the core.

412793

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