摘要
建立电火花磨削蜂窝环的单脉冲放电模型,利用ANSYS对电火花磨削蜂窝环时的温度场分布进行有限元模拟,得到在不同峰值电流和脉宽条件下,放电点的温度场分布以及电参数与蚀除凹坑大小之间的关系。计算出蜂窝环放电凹坑的几何特征,与实际磨削条件下的表面粗糙度进行对比,并根据其加工特点进行修正,经修正后模拟的单脉冲放电凹坑几何特征可以近似表征实际连续电火花磨削的表面粗糙度。利用有限元模拟电火花磨削蜂窝环的温度场分布规律是可行的,且模拟过程精确、迅速。
Single pulse discharge model of EDM honeycomb ring is established. The temperature field of EDM honeycomb ring is analyzed by ANSYS software, the temperature distribution under different peak current and pulse-on, and the relation between electrical parameters and depth, radius of discharge crater are obtained. Geometric features of discharge crater are calculated and contrasted with actual surface roughness. Simulation results are amended based on processing characteristics of single pulse discharge crater and can approximately reflect the actual surface roughness with continual grinding pro- cess. It is feasible to apply finite element method to research the temperature field distributed regularity of EDM honeycomb ring.
出处
《航空制造技术》
北大核心
2014年第16期95-98,共4页
Aeronautical Manufacturing Technology
基金
辽宁省自然科学基金资助项目(201202172)
辽宁省教育科学基金资助项目(2008537)资助
关键词
电火花磨削
蜂窝环
蚀除凹坑
温度场
有限元
表面粗糙度
EDM Honeycomb ring Dischargecrater Temperature field Finite element Surfaceroughness
