Analysis of Transmission Ratio Problem for Planetary Gear Reducer with Two Internal Gear Pairs

Abstract:

Planetary gear reducer with two internal gear pairs is known as NN type reducer. It has the advantage of large transmission ratio. Through the deep comprehensive studies on transmission ratio from four NN type reducers with different structure, the author proposes a new method to analyze transmission ratio from the tooth number difference for both internal gear pairs and external gear pairs, reveals rule, feature and range of transmission ratio of NN type reducer, and provides a clear train of thought for the selection of transmission ratio.

• Periodical: Applied Mechanics and Materials (Volumes 101-102)
• Pages: 727-731
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.101-102.727
• Online since: September 2011
• Authors: Xiao Ning Feng
• Keywords: Internal Gear Pair, Planetary Gear Drive, Transmission Ratio

References

[1] X.N. Feng: Journal of Mechanical Transmission, Vol. 19 (1995) No. 2, pp.21-25 (in Chinese).

[2] Editorial Committee for Design and Manufacture of Involute Planetary Gear Transmission: Design and Manufacture of Involute Planetary Gear Transmission (China Machine Press, China, 2002)