Rotor for permanent magnet excited, high-speed electric rotary m

Details Rotor for permanent magnet excited, high-speed electric rotary m Rotor for permanent magnet excited, high-speed electric rotary m

1998-09-03

2000-04-11

Ramirez, Nestor

Metal working

Method of mechanical manufacture

Electrical device making

29607, 29596, 310156, 310261, 310265, H05K 1502, H02K 2112

Patent

active

060474610

ABSTRACT:
A manufacturing method of a rotor for a permanent magnet-excited, high-speed electric rotary machine according to the present invention comprises, covering an outer circumferential surface of at least one permanent magnet by a fiber-reinforced plastic protection cover with prestress compressing in radial direction; inserting a steel sleeve into the at least one permanent magnet to form a permanent magnet assembly; preparing at least one permanent magnet assembly; inserting a rotor shaft into the steel sleeve while applying hydraulic pressure to an inner circumferential surface of the steel sleeve of the prepared at least one permanent magnet assembly to expand the steel sleeve; and then removing the hydraulic pressure to tight fit the at least one permanent magnet assembly onto the rotor shaft.

REFERENCES:
patent: 4617726 (1986-10-01), Denk
patent: 4625135 (1986-11-01), Kasabian
patent: 4759116 (1988-07-01), Jones
patent: 4829657 (1989-05-01), Wright
patent: 4910861 (1990-03-01), Dohogue
patent: 4918802 (1990-04-01), Schaefer
patent: 4930201 (1990-06-01), Brown
patent: 5144735 (1992-09-01), Stark
patent: 5485045 (1996-01-01), Canders et al.
patent: 5500994 (1996-03-01), Itaya
patent: 5687471 (1997-11-01), Noguchi et al.
Japanese Patent Unexamined Publication No. 8-107641.
Japanese Patent Unexamined Publication No. 5-22880.
Japanese Patent Unexamined Publication No. 6-284611.
Japanese Patent Unexamined Publication No. 9-19093.

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