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小孔电解加工高频脉冲电源研制及工艺试验

发表时间:2016-10-31  浏览量:1400  下载量:530
全部作者: 陈远龙,杨坤,常伟杰,万晨光,欧阳俊豪
作者单位: 合肥工业大学机械工程学院
摘 要: 针对一种新型医用注射器针头小孔电解加工工艺研制一种高频脉冲电源,其输出方式采用直流加绝缘栅双极型晶体管(insulated gate bipolar transistor,IGBT)功率模块斩波的形式,脉冲频率为1~100 kHz,输出电压在0~50 V连续可调,最大输出电流为50 A,脉冲频率与占空比均独立可调。IGBT功率模块的脉冲驱动信号由NEC单片机内部的高频定时器阵列单元产生,输出波形良好,具有陡峭的上升沿与下降沿。根据针头小孔电解加工工艺特点设置快速保护电路,确保加工过程中阴极、工件与脉冲电源的安全、可靠。通过小孔电解加工工艺试验验证了电源样机的可行性与有效性。
关 键 词: 特种加工工艺;电解加工;高频脉冲电源;小孔;绝缘栅双极型晶体管
Title: Development and technological test of special high frequency pulse power supply for tiny hole electrolysis processing
Author: CHEN Yuanlong, YANG Kun, CHANG Weijie, WAN Chenguang, OUYANG Junhao
Organization: School of Mechanical Engineering, Hefei University of Technology
Abstract: Aiming at a study of small holes for a new type of medical syringe needle in electrochemical machining process, high frequency pulse power is developed. The output mode of this power is direct current with insulated gate bipolar transistor (IGBT) chopper, and the pulse frequency is 1-100 kHz. The output voltage is adjustable in 0-50 V, and the maximum of output current is 50 A. The pulse frequency and duty ratio are adjustable independently. The pulse drive signal of IGBT power module is produced by high-frequency timer array unit in the NEC micro controller unit, and the output waveform is good which has a steep rise along with the falling edge. According to the characteristics of small holes in electrochemical machining process, we set the rapid protection circuit to ensure the safety of the machining process and reliability of the workpiece and the pulse power. Through the process tests of small holes in electrochemical machining, the feasibility and effectiveness of the power prototype are verified.
Key words: non-conventional machining; electrochemical machining; high frequency pulse power; tiny hole; insulated gate bipolar transistor
发表期数: 2016年10月第20期
引用格式: 陈远龙,杨坤,常伟杰,等. 小孔电解加工高频脉冲电源研制及工艺试验[J]. 中国科技论文在线精品论文,2016,9(20):2060-2065.
 
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