Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
Efficiency of the Reducer of a Bevel-Geared Motor
Submission Author:
Marina Baldissera de Souza , SC , Brazil
Co-Authors:
Marina Baldissera de Souza, Gustavo Fernandes, Daniel Martins, Andrea Piga Carboni, Luis Paulo Laus
Presenter: Gustavo Fernandes
doi://10.26678/ABCM.COBEM2023.COB2023-0761
Abstract
Bevel-geared motors are electric motors with a gear reducer connected to their output shaft, commonly used in industrial machinery requiring high torque. The efficiency of the reducer in a bevel-geared motor should be determined during its design phase, as the efficiency quantifies how effectively the bevel-geared motor is converting the electrical energy into mechanical power. This paper introduces an innovative approach to compute the efficiency of the reducer of a bevel-geared motor. A standard reducer’s layout is considered, in which the reducer has two stages: the first corresponding to a pair of cylindrical gears, and the second composed of a pair of bevel gears with perpendicular shafts. The efficiency is determined via Davies’ method, an analogy of Kirchhoff's voltage and current laws for solving the kinematics and statics of mechanisms, based on graph and screw theories. The total efficiency of the double-stage reducer obtained is equivalent to multiplying the individual stage efficiencies, the usual way to compute the efficiency of multi-stage transmissions. Thus, the paper’s result demonstrates the effectiveness of the method. To the best of the authors' knowledge, it is the first time that graph and screw theories are applied to compute the efficiency of the reducer of a bevel-geared motor.
Keywords
Efficiency, Bevel gear train, Geared motor, transmission
