Influence of Torsional Damping and Lead of Ball-screw onto Vibration Characteristics of Feed Drive System

抄録

The purpose of this study is to clarify the influence of the torsional damping and the lead of ball-screw onto the vibration characteristic of the feed drive system. In this study, the measurement tests are carried out with a feed drive system consisting of an AC servo motor, a coupling, a ball-screw, and linear ball guides. It is clarified from the experiments that the feed drive system has three main vibration modes. It is also confirmed that the second vibration mode can directory be influenced by the torsional damping of the coupling, and smaller lead of ball-screw makes higher amplitude of the second vibration mode and lower amplitude of the first vibration mode.