Tooth profile arrangement to eliminate tooth intererence in exte

Details Tooth profile arrangement to eliminate tooth intererence in exte Tooth profile arrangement to eliminate tooth intererence in exte

1993-08-30

1995-10-10

Ta, Khoi O.

Machine element or mechanism

Gearing

74462, F16H 132

Patent

active

054561396

ABSTRACT:
The present invention comprises an extended tooth contact harmonic drive gearing apparatus for transmitting rotary motion from an input drive to an output drive through mating contact between a flexspline and a rigid circular spline, the flexspline being swept into a non-circular shape by a wave generator. The wave generator causes the teeth of the flexspline to precess from a normal to an inclined orientation and back to a normal orientation again. The teeth on both the flexspline and the circular spline have a profile which accomodates that tooth inclination, and thus avoids interference therebetween.

REFERENCES:
patent: 2128125 (1938-08-01), Guest
patent: 2906143 (1959-09-01), Musser
patent: 3415143 (1968-12-01), Ishikawa
patent: 3996816 (1976-12-01), Brighton
patent: 4051745 (1977-10-01), Ishikawa
patent: 4823638 (1989-04-01), Ishikawa
Konstruktion, vol. 42, No. 7/8, 1990 Berlin, DE, pp. 255-260, XPO 001 95082 F. Leistner.
Konstruktion, vol. 43, No. 7/8, 1991 Berlin, DE, pp. 275-280, S. Motyka.

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