超声波去除小孔毛刺试验及装置中变幅杆设计

根据超声波去除毛刺的原理设计了去除小孔毛刺试验装置;运用声学波动理论设计了单一纵振圆锥过渡阶梯形变幅杆,并对纵扭共振变幅杆的结构进行了设计;通过ANSYS仿真分析,得出了纵扭共振变幅杆的结构参数对其谐振频率及扭转振幅与纵振振幅之比的影响规律,并由此规律设计出纵扭共振变幅杆实例;将所设计的单一纵振与纵扭复合振动变幅杆用于超声去毛刺的试验。结果表明:所设计的变幅杆有较好的振动性能;在磨料悬浮液浓度处于合适的范围内,纵扭复合振动较单一纵振对毛刺有更好的去除效果。

Experiment of Ultrasonic Deburring for Small Hole and Design of Horn in Device

According to the principle of ultrasonic deburring,an experimental device for removing small hole burrs is designed.The conical transitional stepped horn that has a single longitudinal vibration is designed by using acoustic wave theory,and the structure of the longitudinal and torsional resonant horn is designed.Through the ANSYS simulation analysis,the influence of the structural parameters of the longitudinal-torsional horn on its resonant frequency and the ratio of the torsional amplitude and the longitudinal vibration amplitude is obtained,and an example of a longitudinal-torsional resonant horn is designed from dais rule.The designed single longitudinal .vibration horn and the longitudinal and torsional resonant horn are used for ultrasonic deburring experiments.The results show that the designed horn has better vibration performance.In the appropriate range of abrasive suspension concentration,the longitudinal.and torsional composite vibration has a better removal effect on burrs than a single longitudinal vibration.