Method for manufacturing and winding stator core stacks for elec

Details Method for manufacturing and winding stator core stacks for elec Method for manufacturing and winding stator core stacks for elec

1990-08-29

1992-03-17

Hall, Carl E.

Metal working

Method of mechanical manufacture

Electrical device making

29606, 29609, H02K 1502

Patent

active

050956108

ABSTRACT:
A method of manufacturing and winding stator core stacks intended for electric motors with internal rotors. Identical sectors are punched and stacked from a sheet metal strip and have spaced pole shoe elements extending radially from a flux return element or core with their free ends projecting inward. The pole shoe elements are given a winding. During the punching process, the pole shoe elements and the flux return element or core are separated from one another and stacked individually, the pole shoe elements being held by an inner ring also punched from the sheet metal strip. Thereafter, windings are applied and finally the wound pole shoes are assembled with the return element to form the stator.
The process is especially suitable for manufacturing stators for low-power and miniature motors (less than 1 kW).

REFERENCES:
patent: 2354551 (1944-07-01), Sawyer
patent: 2607816 (1952-08-01), Ryder et al.
patent: 4438558 (1984-03-01), Mitsui

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