一种用于精密振动切削的超声振子的设计与实验研究

Design and Experimental Study of an Ultrasonic Generator for Precision Vibration Cutting

精密超声振动切削是一种特种加工方法,对这种切削加工方法的研究工作在国内正处于快速发展阶段,为了能解决其中振动产生的问题并实现精密加工的要求,研制了用于精密数控车床上的超声振子,其中换能器采用压电夹心式结构,变幅杆采用复合式结构,其功能是产生满足切削加工要求的超声振动,并通过仿真与实验的方法验证了设计的变幅杆的性能满足切削加工的要求。最后,进行了精密切削实验,并进行了加入超声振动后与不加振动的车削工件表面粗糙度值的研究,得出超声车削出的工件表面质量优于普通车削。

Precision ultrasonic vibration cutting is a non-traditional machining method whose study is in growing phase in China. In order to solve vibration-generated problem and meet expectation of precision machining, an ultrasonic generator for precision numerical control machine was developed, its function is generating ultrasonic vibration. Design and simulation study was carried out. Vibration cutting experimental was made.