基于Fluent电火花深小孔加工间隙流场的研究  

Gap Flow Research for Deep-Small Hole Drilling by EDM Based on Fluent Software

作　　者：李建功[1] 许加利[1] 裴景玉[1] 

机构地区：[1]上海交通大学机械与动力工程学院,上海200240

出　　处：《电加工与模具》2009年第2期18-22,共5页Electromachining & Mould

摘　　要：为了研究电火花深小孔加工中工作液流场对加工效率的影响,从流场理论出发,建立了极间流场数学模型。利用Fluent流体力学软件计算了极间工作液及电蚀产物在不同的主轴旋转速度下,所呈现的速度场和压力场分布。设计实验的结果表明,在特定转速范围内加工效率最高,低于或高于这个转速,加工效率都会下降。理论模型的结果从速度场和压力场两个方面定性地解释了这一实验结果。To study the effect on machining efficiency by rotational speed of principal axis during deep-small hole drilling, mathematical model of gap flow has been set up based on the theory of fluid dynamics. By means of CFD software Fluent, both velocity field and pressure field of gap flow which consists working fluid and deposits have been analyzed on the condition of different rotational speed of principal axis. Results of experiments designed have demonstrated that only specific rational speed can lead to maximum machining efficiency, which would go down whenever the speed increases or decreases. The experimental results have been explained to some extent from both velocity field and pressure field.

关 键 词：电火花加工 流场 Fluent软件 计算流体动力学 

分 类 号：TG661[金属学及工艺—金属切削加工及机床]