Computer-Aided Sketching of Epicyclic-Type Automatic Transmission Gear Trains

[+] Author and Article Information
G. Chatterjee, Lung-Wen Tsai

Department of Mechanical Engineering and Institute for Systems Research, University of Maryland, College Park, MD

J. Mech. Des 118(3), 405-411 (Sep 01, 1996) (7 pages) doi:10.1115/1.2826900 History: Received June 01, 1994; Revised March 01, 1996; Online December 11, 2007


The enumeration of epicyclic gear mechanisms in the form of graphs gives rise to the need of a methodology for reverse transformation, that is, for constructing the mechanisms from graphs. This paper addresses the issue by discretizing an epicyclic gear mechanism into Fundamental Geared Entities. Further, these geared entities are shown to be a conglomeration of four primitives; namely, the carrier, sun, ring, and the planet gear. An algorithm is formulated to create the entities from a graph by using these primitives. The entities are then connected together to form a mechanism.

Copyright © 1996 by The American Society of Mechanical Engineers
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