Abstract
We develop the small size servo press machine in this study. We will show the problem of modeling such as mechanical system. The ball screw is connected to the motor by cog belt. Elastics of a cog belt has spring characteristics. Therefore, we carried out experiment to obtain stiffness of the cog belt. The cog belt characteristic is obtained as 2 dimension of linear approximation. As a result, we are able to be modeled for performing load sensor-less.
