Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
DIMENSIONAL SYNTHESIS OF COMPLEX GEAR TRAINS FOR RAPID PROTOTYPING WITH 3D PRINTING
Submission Author:
Marina Baldissera de Souza , SC , Brazil
Co-Authors:
Marina Baldissera de Souza, Virgílio Silveira Lima, Rodrigo de Souza Vieira, Daniel Martins
Presenter: Marina Baldissera de Souza
doi://10.26678/ABCM.COBEM2019.COB2019-0404
Abstract
Planetary gear trains (PGT) are largely used in industry due to their features such as high torque capacity, lower weight and highly compact package. The wide range of application of PGTs has led to the development of synthesis methodologies. Most of these methodologies focus on the generation of different topologies, usually ending with a schematic representation. In these works, other stages of the design conception are not carried out, e.g. the dimensional synthesis. The optimization researches to size PGTs found in literature, in spite of being very complete, have as starting point a simple and not innovative architecture. This paper aims to run against this trend, proposing a technique for dimensional synthesis of a complex PGT. The dimensional synthesis is done via Davies’ method, based on graph and screw theories. Through the Davies method, an optimization problem is built, where the objective function is related to the PGT’s ratio and the design variables are the number of teeth and the modules of the gears. Using the Differential Evolution algorithm to solve the optimization problem, the number of teeth and modules that give a target ratio are obtained. Then, the PGT is modeled in a CAD software and a prototype will be 3D printed to physically represent it.
Keywords
planetary gear train, dimensional synthesis, Optimization, Davies method, Rapid Prototyping
