摘要
介绍一种小孔电火花分流加工新方法,建立其分流加工的分流模型,检测研究加工过程分流状态,得出每个分电极通过的电流按基尔霍夫定律减小,从而分流放电电流和减小放电蚀除体积。在研究条件范围内,进一步检测分流法电火花加工过程的分流状态,得到多个分电极同时形成放电火花,说明了分流法加工的分流作用。研究结果表明,利用电火花机床稳定加工参数,进行等面积分流电火花加工,将加工出比原机床稳定加工临界尺寸更小的小孔,为微小孔电火花加工分流状态的研究和应用提供试验依据。
The paper presents a study of the dividing state in small-hole EDM by means of current dividing. The mechanism analysis includes mathematic model development in the process of hole＇s drilling, and drilling states＇ observation, and discussion. The results from KCL and the experiments show that the discharge spark of each electrode forms at same time within test conditions, and discharging current on each electrode decreases with the electrodes area reduced. So the debris is smaller and excludes easily. In a word, the method helps to control the dimension precision. It is a novel method for small/micro holes EDM.
出处
《电加工与模具》
2010年第4期28-31,共4页
Electromachining & Mould
基金
国家自然科学基金资助项目(50635040)
关键词
电火花加工
小孔
分流法
分流状态
EDM
small-hole
current dividing
state of current dividing
