Abstract
This paper describes an analysis of dynamical behavier of the micro–parts feeding using a saw–tooth surface. Saw–tooth surfaces bring difference of contact condition at positive and negative direction, which realize unidirectional feeding of micro–parts with simple planar and symmetric vibration. In order to design an appropriate saw–tooth surface for various micro–parts, we need to understand influence of contact condition of saw–tooth surface with a micro–part. Spherical models are defined as an approximation of roughness of a micro–part surface. We derive statics of contact of these spherical models with a saw–tooth, and we derive dynamics of a micro–part. Then we conduct numerical simulation for feeding and assess the influence of pitch of saw–tooth surface on micro–parts feeding.