THEORETICAL AND EXPERIMENTAL MODELLING OF THE TRIBOLOGICAL BEHAVIOUR ASPECTS OF CONTACT ELEMENTS IN THE PRECESSIONAL GEARING (PG)

Abstract

This paper deals with the theoretical-experimental model of the tribological behavior of the contact elements in precessional gears (PG) in the functions of conjugate profiles of linear velocities "convex-concave" or "convex-convex" for the corresponding geometric parameters (ρk i k ρ − r) and the values of the kinematic force parameters (VE 2 , VE i Va) for each concrete position of the ki points. The calculation of the constructivefunctional and kinematic parameters of the “roller-shoe” and “roller-roller” elements of the tribocouple were adjusted for the experimental verification tests on the SMT-1 installation and adapted to the specific test conditions of the tribocouples with conformal contact of gear teeth made of plastics, which will be subjected to sliding friction and rolling processes of the concrete tribocouple elements.

Keywords

• precessional transmission
• precessional gearing
• contact load
• tribomodel
• sliding (rolling) friction
• experimental modeling of the precessional gearing
• tribological parameters
• friction coefficient and force
• power loss
• mechanical efficiency