Machining, Measurement, and Control Laboratory

Location of supporting points of machine tool for reducing structural vibration
Shuya Nishio, Daisuke Kono, Atsushi Matsubara, Iwao Yamaji

The object of this research is to propose placement of mounts to reduce relative displacement between a tool and a13 workpiece that result from structural vibrations of a machine tool. A test stand is developed to conduct experiments with various placement of mounts. The test stand with three mounts is modeled to investigate the influence of the placement of mounts on the relative displacement between the tool and the workpiece for the driving force, and the relative displacement is compared by the placement of mounts. As a result, the relative displacement is reduced by increasing the moment stiffness of the supporting system, and it is also reduced when the direction of the rocking mode is slightly different from that where the dynamic stiffness of the upper structure is small.
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