Projeto de um equipamento para ensaio acelerado de desgaste em engrenagens

Abstract

The contact fatigue studies in gear teeth are of paramount importance in the engineering environment. Such damages are the basis for research lines within materials engineering, which involves the determination and characterization of materials for specific mechanical applications. The objective of this thesis was to design a compact equipment able to perform accelerated wear tests in gears, featuring through the tensions of Hertz, the occurrence of the pitting and spalling phenomena, mainly. The concept of this equipment is based on customer demands, benchmarking of current products and other features added to the projetct that may differentiate the product. This project will take into account the capabilities to adjust the working rotation and applying high torsional loads on the axles. Through this, it will be possible to perform testing and wear analysis in gears of different materials and different diameters in a short period of time. In the first stage of this monograph was understood by means of a literature review, the concepts of geometry, damages to gears and contact stresses, as well as a comparison between current products on the market and a general approach to the methodology used in this thesis. Finally, we have the definition of the concept to be designed and then the creation of a complete project with manufacturing drawings and specifications required for its production. This monograph aims to be contributory in the formation of the Industrial Mechanical Engineering students and also contribute to the progress of the studies performed in the Laboratory for Surfaces and Contact (LASC) of the Federal Technological University of Paraná (UTFPR).