微小変位領域における転がり摩擦に関する基礎的研究 (第1報)

力主導式転がり摩擦特性試験装置の開発

抄録

A testing apparatus having a similar structure to a mechanical stage was designed to study rolling friction acting between a roller and a steel rail. This apparatus equips a pair of voice-coil motors. These linear motors which are applied to ultra-precision positioning mechanisms can control tangential force finely. When the roller is placed on a wavy surface, it is stable at the bottom of the wave due to its minimum potential energy. So it is possible to estimate the motive rolling friction by measuring two forces. One is a driving force which causes the roller to start a rolling. Another is a critical driving force for the transition to steady rolling. Furthermore this motive rolling friction coincides with a steady rolling friction.