摘要
设计了各项参数符合某专用电火花线切割机床要求的脉冲电源。该电火花线切割脉冲电源,以PIC18F458单片机内部集成的PWM功能模块产生脉冲信号,频率和占空比调节方便,性能稳定。采用霍尔传感器作为检测过电流的器件,实现快速过流保护的功能,避免过电流对加工的影响。同时设计了基于触摸屏控制的人机交互系统,界面友好,操作方便灵活。经试验表明,整个电源系统性能稳定,减少了过电流产生的不利影响,提高了加工质量。
It is noted that the over currency plays a negative role during process of certain key part of automobile with a special WEDM.To eliminate the affect,a new pulse WEDM power is proposed that meet all need.The pulse source of the power is produced by PWM module embedded in PIC18F458 micro-computer,which makes the variability of the frequency and the duty ratio convenient and the stability of it perfect.Besides,the over-current signal detected by the Hall sensor is used to make the over-current protector practical.Moreover,the touch screen is applied to the project to make the human-machine interface friendly,convenient and flexible.Under experimental investigation,it is found that the protector works sensitively to prevent from over-current state,and improves the processing quality.
出处
《制造技术与机床》
CSCD
北大核心
2012年第10期43-48,共6页
Manufacturing Technology & Machine Tool
基金
中国博士后基金第三批特别资助项目(201003341)
