Friction Reduction in a Revolute Joint by the Use of Axial High-Frequency Excitation

While downscaling gains importance in many technical components, accuracy must increase as well. This is a challenge especially for dry bearings with small tolerances. To suppress friction induced phenomena like stick-slip-motions or break-away-effects, superposed oscillations can be used to specifically influence the friction characteristic. In this context, the present contribution deals with a friction revolute joint with axial high-frequency excitation to reduce friction torque. There is a special focus on the heat generation and its interaction with the system dynamics.