Laminated core

Details Laminated core Laminated core

1996-11-22

1999-08-24

Dougherty, Thomas M.

Electrical generator or motor structure

Dynamoelectric

Rotary

310216, 310 42, 310259, 29596, H02K 1500, H02K 1502

Patent

active

059428317

ABSTRACT:
A laminated core for dynamoelectric machines and so on is formed of thin sheet core pieces each blanked into a predetermined configuration and stacked one upon another and are successively welded at a plurality of weld zones of an edge of each core piece by continuous or spot irradiation of laser beams so that the core pieces are combined together. The core piece constituting one of two end faces of the core has first notches formed in one half of the weld zones of the core piece. The core piece constituting the other end face of the core has second notches formed in one half of the weld zones of the core piece constituting the other end face of the core. The first notches are shifted from the second notches by 90 degrees.

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