2017 Volume 58 Issue 675 Pages 311-316
Blanking vibration is a cause of noise pollution and also degrades the precision and shortens the life expectancy of press machines and dies. Recently, a servo press has been developed to alleviate these problems, wherein low speed blanking and pulse motion blanking are used. However, such methods lengthen the blanking time, necessitating the proper control of the servo press slide in the case of blanking. In this study, we propose an active vibration control method for the reduction of blanking vibration. We used a crank servo press and a pulse motion in an experiment. We conducted a simulation and an experiment of blanking using an active vibration control method, which we named “counter pulse blanking.” As a result of the simulation and the experiment, we confirmed that counter pulse blanking reduced blanking vibration by 40%.
