Oscillatory tooth and needle gear transmitting devices

Details Oscillatory tooth and needle gear transmitting devices Oscillatory tooth and needle gear transmitting devices

1987-10-30

1989-01-17

Braun, Leslie A.

Machine element or mechanism

Rotary member or shaft indexing, e.g., tool or work turret

Preselected indexed position

F16H 128

Patent

active

047981040

ABSTRACT:
An oscillatory tooth and needle gear transmitting device which is chiefly composed of a wave-actuator, an oscillatory tooth wheel and a stationary needle gear.
The oscillatory tooth and needle gear transmitting device for transmitting rotary motion comprises a wave-actuator composed of an off-set standard rolling bearing, an oscillatory tooth wheel composed of a set of cylindrical pin-shaped oscillatory teeth with wedged trapezoid tooth heads, and a needle gear composed of a set of needle teeth with or without rolling sleeves, the three basic components being assembled coaxially. In the transmitting device, the reciprocal movement of oscillatory teeth is realized by meshing forces between tooth profiles, elastic return rings being unnecessary; multi-tooth meshing resulting in uniformized loads, the device of uniforming loads being removed.
The transmitting device has the features of large speed ratio, great loading capacity, high transmitting efficiency, compact structure and simplified machining process.

REFERENCES:
patent: 2520282 (1950-08-01), Henry
patent: 2919589 (1960-01-01), Sundt
patent: 3160032 (1964-12-01), Black
patent: 3258994 (1966-07-01), Gorfin
patent: 3283597 (1966-11-01), Doll
patent: 3448638 (1969-06-01), Zahlaus
patent: 3468175 (1969-09-01), Rabek
patent: 4050331 (1977-09-01), Braren
patent: 4117746 (1978-10-01), Pierrat
patent: 4449425 (1984-05-01), Carden
"The Follower Tooth Reduction Gear", W. B. Molyneux, Instn. Mech. Engrs., pp. 15-23, Published 3rd May, 1972.

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