Use of Noncircular Gears to Reduce Torque and Speed Fluctuations in Rotating Shafts

[+] Author and Article Information
D. B. Dooner

Department of Mechanical Engineering, University of Puerto Rico at Mayagüez, Mayagüez, Puerto Rico 00681-5000

J. Mech. Des 119(2), 299-306 (Jun 01, 1997) (8 pages) doi:10.1115/1.2826251 History: Received February 01, 1996; Revised September 01, 1996; Online December 11, 2007


A methodology is presented where noncircular gears are used to reduce unwanted torque and speed fluctuations that may exist in rotating shafts. A noncircular gear pair is used to drive an auxiliary shaft where a flywheel is mounted, thus creating an auxiliary torque fluctuation. The form of the undesirable torque fluctuation is used to determine a motion specification for the synthesis of a noncircular gear pair. The undesired torque fluctuation and the auxiliary torque fluctuation are added to reduce the net torque fluctuation. Two illustrative examples are included. This approach of torque balancing is compared to the classical method of mounting a flywheel onto the shaft that experiences the unwanted torque fluctuation to reduce its speed variation.

Copyright © 1997 by The American Society of Mechanical Engineers
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