低压电磁铆接放电电流分析  

Analysis of discharge current in low voltage electromagnetic riveting

作　　者：邓将华[1] 郑义明[1] 唐超[1] 詹艳然[1] 江星莹[1] 

机构地区：[1]福州大学机械工程及自动化学院,福州350108

出　　处：《塑性工程学报》2013年第1期108-112,共5页Journal of Plasticity Engineering

基　　金：国家自然科学基金资助项目(50905032);中国博士后科学基金资助项目(2012M511438);福建省教育厅A类面上基金资助项目(JA09033)

摘　　要：线圈放电电流对铆接力起决定作用,铆接力是顺利实现铆接的关键因素。放电电流可采用幅值和频率等参数描述。该文在放电回路分析的基础上,通过电阻分流器法测量成形线圈放电电流,分析低压电磁铆接系统参数对线圈放电电流的影响。研究结果表明,在低压电磁铆接下,线圈放电电流为一衰减震荡波形,幅值在kA级,周期为ms级,能顺利实现直径4mmTA1铆钉的成形。同时线圈匝数、导线截面尺寸、放电电容和驱动片厚度等参数,对低压电磁铆接放电电流的幅值和周期均产生较大的影响。在成形中需优化电阻、电感和电容三者的匹配关系,以满足不同工艺放电电流的要求。Rivet force is decided by the coil discharge current and is the key to implement riveting in electromagnetic riveting.The discharge current can be described by amplitude and frequency parameters.Based on discharge circuit analysis of electromagnetic riveting,the coil discharge current was measured with the diverter and the effect of low voltage electromagnetic riveting system parameters on discharge current was analyzed.The results showed that the coil discharge current was a damping vibration waveform and the amplitude was in hundreds of ampere and the period was in millisecond.The 4mm TA1 rivet could be formed in low voltage electromagnetic riveting.At the same time,different parameters including coil turns,wire section size,discharge capacitance and drive plate thickness have significant influence on the amplitude and the frequency of coil discharge current.The matching relationship of resistance,inductance and capacitance need to be optimized to meet the different requirements for process discharge current in electromagnetic riveting.

关 键 词：电磁铆接 低压 放电电流 TA1铆钉 

分 类 号：TG391[金属学及工艺—金属压力加工]