摘要
针对脉动态电解加工的电流特性开展多物理场耦合仿真分析,仿真结果显示电流波形以最小加工间隙时刻对称分布。针对在脉动态电解加工实验中观察到的加工电流峰值实际前置于最小加工间隙时刻的现象,采用高速摄像对脉动态电解加工中的产物情况进行观测,并结合图像灰度处理软件对产物在间隙中的比例进行量化分析,分析结果表明产物在加工间隙内的堆积过程特性是引起电流波形峰值前置的主要原因。
In this paper,the multi-physical field coupling simulation of current characteristics in PECM is carried out.The simulation results show that the current waveforms are symmetrically distributed at the minimum machining gap.The experimental results show that the peak value pre-position of machining current is in the minimum gap.The high-speed camera is used to observe the product in PECM.and with the image grayscale processing software to guantitatively analyze the proportion of the product in the gap.The results show that the peak current pre-position phenomenon is mainly caused by the stacking of the products in the pulse dynamic machining gap.
作者
王明明
周泽生
姜小琛
刘嘉
WANG Mingming;ZHOU Zesheng;JIANG Xiaochen;LIU Jia(School of Mechanical and Electrical Engineering,Nanjing University of Aeronautics&Astronautics,Nanjing 210016,China)
出处
《机械制造与自动化》
2019年第6期7-10,28,共5页
Machine Building & Automation
基金
国家自然科学基金(51405230)
南京航空航天大学研究生创新基地开放基金项目(kfjj20170504)
关键词
电解加工
脉冲
振动
高速摄像
试验
ECM
pulse current
tool vibration
high-speed camera
experiment
