Rotor for rotating machine, process for producing the same, and

Details Rotor for rotating machine, process for producing the same, and Rotor for rotating machine, process for producing the same, and

1997-04-10

2000-06-27

LaBalle, Clayton

Electrical generator or motor structure

Dynamoelectric

Rotary

310156, H02K 1503, H02K 2114

Patent

active

060810521

ABSTRACT:
In producing a rotor for a rotating machine by bonding a rotor body and a plurality of permanent magnets to each other through a heating step and a subsequent cooling step, a rotor body having a larger coefficicient of linear thermal expansion at the cooling step has its joint surface formed by assembling of a plurality of small joint faces. Thus, it is possible to moderate a thermal stress in a brazing filler metal layer between the rotor body and each of the permanent magnets to avoid the generation of cracks in the permanent magnets having a smaller coefficient of linear thermal expansion at the cooling step and to firmly bond the rotor body and each of the permanent magnets to each other.

REFERENCES:
patent: 4472651 (1984-09-01), Jones
patent: 5193266 (1993-03-01), Caputo
patent: 5323077 (1994-06-01), Brandes
patent: 5397951 (1995-03-01), Uchida et al.
patent: 5548172 (1996-08-01), Kliman et al.
patent: 5670836 (1997-09-01), Horst
European Search Report.

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