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本文对轴向振动钻削微小孔进行了试验研究．分析了降低孔径分散度的机理．并介绍了用压电陶瓷振动元件直接振动主轴电机的振动钻削装置。
In this paper, the axial vibration drilling holes were tested. The mechanism of reducing the aperture dispersion was analyzed. The vibration drilling device which directly vibrates the spindle motor with the piezoelectric ceramic vibration element is introduced.