主动匹配式micro-EDM脉冲电源设计与实验  

Design and experiment of active matching micro-EDM pulse power supply

作　　者：孙术发[1] 刘美爽[1] 狄士春[2] 沈微[1] 安立华[1] 葛安华[1] 

机构地区：[1]东北林业大学工程技术学院,黑龙江哈尔滨150040 [2]哈尔滨工业大学机电工程学院,黑龙江哈尔滨150001

出　　处：《哈尔滨工程大学学报》2015年第8期1080-1085,共6页Journal of Harbin Engineering University

基　　金：中央高校基本科研业务费资助项目(DL13BB08);国家863计划资助项目(2009AA044205)

摘　　要：为了提高微细电火花加工(micro-EDM)效率,设计了一种脉冲参数主动匹配式micro-EDM脉冲电源。采用主动匹配式脉冲发生电路实现脉冲参数根据极间电容充放电情况自动匹配,通过实验,对电源的加工效率、加工质量和低电压加工情况进行了分析。结果表明:采用该电源可以实现在单个脉冲周期内,极间电容单次充电、单次放电;与常规晶体管脉冲电源比较,该电源可以提高加工效率,加工表面变质层无裂纹、凹坑均匀、加工质量较高;可以实现24 V低电压加工,加工后的微孔圆度和精度较高。该电源具有提高微细电火花加工效率,保证较高加工质量的作用。For the purpose of increasing the efficiency of micro electron discharge machining （ micro-EDM）, an active matching micro-EDM pulse power supply is designed. Using the active matching pulse generation circuit, the pulse parameters can be matched automatically depending on the charge and discharge of the polar capacitor. The machining efficiency, quality and low voltage machining property were analyzed through experiments. The result shows that the pulse supply can accomplish a single charge and discharge in one pulse cycle. Compared with regular transistor pulse generator, this power supply can improve material remove rate and machining quality, the sizes of pits are almost the same, with no metasomatile deposit. The pulse supply can work in 24V low voltage charge, with high roundness and precision of the machined micro-hole. This power supply can enhance the efficiency of micro- EDM machining and guarantee a high machining quality.

关 键 词：主动匹配 微细电火花加工 脉冲电源 加工效率 加工质量 

分 类 号：V261.6[航空宇航科学与技术—航空宇航制造工程]