COMPUTER-AIDED SKETCHING OF EPICYCLIC-TYPE AUTOMATIC-TRANSMISSION GEAR TRAINS

The enumeration of epicyclic gear mechanisms in the form of graphs giv es rise to the need of a methodology for reverse transformation that i s, for constructing the mechanisms from graphs. This paper addresses t he issue by discretizing an epicyclic gear mechanism into Fundamental Geared Entities. Further these geared entities ave shown to be a congl omeration of four primitives; namely, the carrier, sun, ring and the p lanet gear. An algorithm is formulated to create the entities from a g raph by using these primitives. The entities are then connected togeth er to form a mechanism.