Low-noise gearing

Details Low-noise gearing Low-noise gearing

1979-11-16

1981-07-07

Husar, C. J.

Machine element or mechanism

Gearing

Teeth

74457, F16H 5506

Patent

active

042767857

ABSTRACT:
A gear tooth form is disclosed that maximizes the profile (transverse) contact ratio for coplanar axis gearing. As the tooth form allows teeth two or three times as fine as those of conventional involute gearing to be used without loss of torque capacity, the face (axial) contact ratio for helical or spiral bevel gearing is also maximized. The total contact ratio (profile plus face contact ratios) is therefore maximized, and the torque load is divided over the maximum number of teeth. This minimizes the transmission error, which in turn minimizes operating noise and vibration. The gearing employs a minimum pressure angle and a path of contact that includes a curved portion.

REFERENCES:
patent: 3251236 (1966-05-01), Wildhaber
patent: 3269205 (1966-08-01), Niemann
patent: 3438279 (1969-04-01), Rouverol
patent: 3631736 (1976-01-01), Saari
patent: 3881364 (1975-05-01), Rouverol
patent: 3918315 (1975-11-01), Rouverol
patent: 3937098 (1976-02-01), Rouverol
patent: 3946621 (1976-03-01), Rouverol
patent: 4031770 (1977-06-01), Ishikawa
patent: 4108017 (1978-08-01), Rouverol
patent: 4149431 (1979-04-01), Rouverol
Article entitled "Maximum Conjugacy Gearing", published in Power Transmission Design, Apr. 1979.
"Gear Design and Application", edited by Nicholas P. Chironis, published by McGraw Hill, 1967 (pp. 48, 69-77).
Addendum No. 1 (1959) to B. S. 978: Part 2: 1952 (British "Double Circular Arc", system).
"Analytical Mechanics of Gears", published by Dover, 1963, p. 48, written by E. Buckingham.

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