電歪型加振ノズルによるウォータージェットの切削特性改善 : 振動振幅の影響

抄録

An oscillating jet nozzle has been developed to improve the efficiency of water jet cutting. In this nozzle several piezo-electric transducers attached to an oscillation plate give high-frequency oscillation to inner high-pressure water. These transducers were driven by the electric circuit composed of a function generator, an amplifier and a matching box. Thus the amplitude of oscillation can be controlled arbitrarily. As a pre-experiment, the amplitude of oscillation was measured by means of a laser vibrometer. The cutting performance of the present nozzle has been examined. Furthermore, mechanisms for improving water jet cutting efficiency are discussed.