Implementação de cálculo de parâmetros geométricos e tensões em engrenagens de um redutor planetário

Abstract

This work is initially structured by an overview of drill machines. It is motivated by a real lack in a company that seeks to improve and develop its equipment. Considering the need to assess the geometric parameters and stresses in the planetary reducers used by these machines, the present work aims to implement the equation necessary to do so. Concepts of hydraulic orbital motors, screw piles and planetary reducers are presented. After it is discussed how to find the reduction ratio, speeds and torque. In order to perform the calculation of the stresses in the gears, a simplified approach to ISO-6336 standard consisting of an analytical and simplified method is used. To check calculations, softwares Inventor and Hexagon ZAR 5 Planetary Gearings are used. With the first software mentioned, it was possible to verify the implementation of the geometric characteristics; with the second, a comparison was made as to bending and contact stresses in the gears, as well as the respective safety factors. The checks accomplished demonstrate the suitability of the resulting in codes that may be useful for the company initially mentioned.