Title:
METHOD OF PRODUCING MICROMOTOR ROTOR
Document Type and Number:
Japanese Patent JPS6084951
Kind Code:
A
Abstract:
The body 1 which consists of magnetic material and is formed from a powder which is solidified by agglomeration under pressure, is surrounded by a hollow jacket 2 and is permanently connected thereto. The agglomeration of the powder 1 and its solidification take place in the hollow jacket 2 itself, which is originally a solid part which can absorb the agglomeration pressures. The powder 1, which is located in this hollow part, is previously subjected to a magnetic field in order to give its particles a pre-orientation. In the case of circular rotors, the direction of the magnetic field is marked on the edge of the hollow part, as a result of which the final magnetisation is simplified, which must, of course, be precisely parallel to the direction of the pre-orientation. In the case of non-circular rotors, the shape of the rotor itself indicates what the direction of the pre-orientation and the magnetisation is. The solid hollow part is machined, for example by turning, in order to take on the final shape of the jacket 2.
Inventors:
HANSU SHIYUTOTSUKAA
Application Number:
JP18897484A
Publication Date:
May 14, 1985
Filing Date:
September 11, 1984
Export Citation:
Assignee:
SHIYUTOKO SA
International Classes:
H02K15/02; H01F41/02; H02K1/27; H02K1/34; H02K15/03; (IPC1-7): H02K15/02
Attorney, Agent or Firm:
Kiyotaka Sasaki
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