Method and apparatus for grooving on rotor

Details Method and apparatus for grooving on rotor Method and apparatus for grooving on rotor

1995-11-09

1998-06-23

Hughes, S. Thomas

Metal working

Method of mechanical manufacture

Electrical device making

72111, 72471, H02K 1502

Patent

active

057687633

ABSTRACT:
Grooves are formed on a rotor by rotor holders for holding a rotor at both ends of a rotary shaft thereof, a groove rolling die for forming grooves in the outer surfaces of the field cores of the rotor, and a holder die having a groove pattern in conformity with a pattern of the grooves that are formed in the outer surfaces of the field cores by the groove rolling die. When the grooves are formed, the grooves are uniform in depth over the entire length of the magnetic poles from the root to the top, thereby preventing the eddy-current loss reduction effect from being deteriorated.

REFERENCES:
patent: 2699077 (1955-01-01), Bedker
patent: 4722211 (1988-02-01), Tsukamoto et al.

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