Stepping motor having rotor with axially spaced sections

Details Stepping motor having rotor with axially spaced sections Stepping motor having rotor with axially spaced sections

1980-07-22

1986-12-02

Duggan, Donovan F.

Electrical generator or motor structure

Dynamoelectric

Rotary

310114, H02K 3700

Patent

active

046267190

ABSTRACT:
The rotor of a stepping motor includes two axially spaced sections each formed with radially projecting and angularly spaced teeth. The angular width of the teeth of one section is approximately the same as the angular width of the pole pieces of the stator of the motor and, as a result, the motor possesses good dynamic torque, good damping characteristics and a high response speed. The angular width of the teeth of the other rotor section is greater than the angular width of the teeth of the first section so as to cause the rotor to stop in a stable detent position and to improve the stepping accuracy of the motor.

REFERENCES:
patent: 3171049 (1965-02-01), Jarret et al.
patent: 3293460 (1966-12-01), Rinzo Iwai et al.
patent: 3500156 (1970-03-01), Thomas
patent: 3751696 (1973-08-01), Morreab
patent: 3783313 (1974-01-01), Mathur
patent: 3984711 (1976-10-01), Kordik
patent: 4048531 (1977-09-01), Buess et al.

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