基于有限元的电火花加工研究进展综述

Review on Research Progress of EDM Based on Finite Element Method

随着“中国制造2025”的推进,加工技术不断发展,电火花加工因具有无接触和宏观作用力极小等优点,在各种加工方法中显现出优势。为了进一步提高加工质量和加工效率,国内外学者采用各种方法来研究放电规律。以有限元仿真为基础,综述了不同条件下,极间的能量流动、温度场分布、表面粗糙度、材料去除率以及电极耗损等的建模方法、初始条件和边界条件的确定。根据实际加工情况对传统模型进行修正,总结了加工性能随放电参数的变化情况,并对未来的发展方向提出一些展望,为进一步深入研究提供参考。

With the development of“Made in China 2025”,processing technology is developing constantly,especially in terms of ma-chining accuracy and complexity.Electrical discharge machining(EDM)has an absolute advantage because of its advantages of no contact and minimal macro force.In recent years,in order to further improve the processing quality and processing efficiency,scholars at home and a-broad use different simulation methods to study the discharge law.Based on the finite element simulation,the modeling methods of energy flow,temperature field distribution,surface roughness,material removal rate,tool wear under different conditions and determination of initial conditions and boundary conditions were summarized.And some prospects for future development direction were put forward,which will pro-vide reference for further research.