Analysis of tribological processes at timing belt's tooth flank

Abstract

The paper presents basic tribomechanical systems in timing belt drives. Analysis of tribomechanical system belt's tooth - belt pulley's tooth, in which the largest value of friction force occurs, is conducted. Monitoring of tribological processes at the belt's tooth side is done according to previously established dynamics. Namely, testing of timing belt drive is performed on a specially designed test bench and measurement of tribological characteristics is performed by "TALYSURF 6" profiler. Analysis of tribological processes at the belt's tooth flank shows that roller and abrasion wear occur with consequential increase of belt's pitch. Wear leads to sudden decrease of service life and to failure of timing belt drive.