Development of Ultra-Short Pulse Power Supply Applicable to Micro-ECM

被引:10
|
作者
Zhang, Y. J. [1 ]
Tang, Y. J. [1 ]
Liu, X. K. [2 ]
Guo, Z. N. [1 ]
Li, F.
机构
[1] Guangdong Univ Technol, Fac Electromech Engn, Guangzhou 510006, Guangdong, Peoples R China
[2] South China Univ Technol, Sch Mech Engn, Guangzhou, Guangdong, Peoples R China
关键词
micro-ECM; nanosecond pulse; power supply; localized machining;
D O I
10.4028/www.scientific.net/MSF.626-627.369
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
A nanosecond pulse power supply for micro-ECM (Electrochemical Machining) has been developed, and the minimum pulse on-time is 50 us. After the influence of ultra-short pulse on micro-ECM was analyzed, complementary chopper circuit was presented to avoid waveform distortion, which can achieve higher pulse frequency. A fast protect circuit was designed, and its response time is less than 5 mu s, which can avoid damaging workpiece and electrical components by switching off machining voltage and step motor as soon as a short circuit was detected A series of ECM experiments using the power supply have been carried out, and results of test have proved that high frequency, short pulse width power supply helps to achieve better quality surface, higher machining accuracy.
引用
收藏
页码:369 / +
页数:2
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