摘要
根据热传导基本理论和微细电火花加工的实际情况,建立起微细电火花加工的热传播模型。采用ANSYS分析软件,基于有限元方法对P+硅和45钢两种材料单脉冲放电情况的温度场进行了数值模拟,分析了微细电火花铣削加工中表面粗糙度与放电能量之间的关系。结果表明,微细电火花仿真能够很好地模拟放电凹坑的温度场分布,进而预测加工表面形貌。
Based on the basic thermal conductivity theory and the fact of micro electro discharge machining （ micro - EDM）, the thermal conductivity model of micro -EDM is proposed. The temperature distribution of the single pulse discharge is emulated with two different materials including P ＋ silicon and 45steel. The relationships between the surface roughness of the workpiece and the single pulse energy are analyzed through the simulation during Micro -EDM milling. It can be seen from the results that the temperature distribution nearby the discharge crater can be well simulated by the micro - EDM thermal model. Furthermore, the surface profile can be predicted.
出处
《制造技术与机床》
CSCD
北大核心
2008年第11期49-53,共5页
Manufacturing Technology & Machine Tool
关键词
微细电火花
热学仿真
温度场
放电凹坑
Micro - EDM
Thermal Simulation I Temperature Field
Discharge Crater
