气中连续放电辅助加工中的控制系统设计

The Design of Control System in Electrical Discharge Assisited Machining

以压电陶瓷微位移驱动原理为基础,对精密驱动技术在气中连续放电辅助加工控制系统中的应用进行了研究。设计了一个包括单片机、压电陶瓷驱动电源、信号检测及处理电路组成的气中连续放电辅助加工控制系统。该系统能根据加工时两电极间电压的变化自动寻找最佳放电间隙,并维持辅助加工中的连续放电,可应用于一些高硬度、难切削材料的辅助加工领域。

Basing on the principle of micro-displacement of piezoelectric ceramic, author have done the research work on the precise actuator technique.,which is used for the controling system in electrical discharge assisted machining.The whole system includes a microcontroller, piezoelectric micro-displacement actuator and the data acquiring and signal processing circuit.The system can find out the best discharge gap automatically based on the gap state and maintain continuous discharge in machining. It can help to machining some high hardness and poor machinability materials.