深小孔超声轴向振动钻削装置设计与研究

Design and research of ultrasonic axial vibration drilling device for micro deep holes

基于振动钻削机理,针对深小孔振动钻削设计了一套超声轴向振动钻削装置,利用有限元方法对变幅杆动力学特性进行了仿真分析,并在设计研制的超声轴向振动装置上进行了深小孔振动钻削与普通钻削对比试验。试验结果表明设计的试验装置满足深小孔轴向振动钻削加工要求,且振动钻削加工深小孔具有较小上下孔径差和表面粗糙度值,与普通钻削相比能够获得更好的加工质量和工艺效果。

This paper developed an ultrasonic axial vibration drilling device for micro deep holes drilling based on vibration cutting theory. Simulated the dynamic characteristics of the horn by using finite element method, and made comparison experiment between conventional drilling and vibration drilling. The experimental result proved that the designed device can meet the requirement of the axial vibration drilling of deep holes and have smaller up and down apertures difference and surface roughness. Comparing with conventional drilling, vibration drilling has better processing quality and technological effects.