摘要
在电火花小孔加工中,排屑困难一直是困扰加工速度的一个重要问题。通过对工具电极改进,用螺旋电极进行电火花小孔加工,使其改变加工过程中间隙流场的流动状态以及电蚀产物的受力,达到增强小孔加工过程中的排屑能力,进而提高加工速度的目的。利用Gambit软件建立仿真模型,应用Fluent对小孔加工过程中排屑进行仿真,对其压力场和速度场进行分析,研究其加工机理。在D703F高速电火花小孔加工机床上进行了试验研究,结果表明螺旋电极电火花小孔加工速度最大提高了20%。
During the process of EDM drilling small hole the difficulty of chip removal is one of the main problems that troubles the processing speed. In order to improve the capacity of chip removal in the working process and increase the processing speed, the electrode of the EDM drilling is modified by using the spiral electrode to change the flow field in the working gap and the force exerted on the chip removal. The simulation model is established by using software Gambit and the flow field of working gap is studied with Fluent simulation software. And then the simulation results of pressure field and velocity field are analyzed respectively to research the processing mechanism. Experimental study is conducted on the DT03F EDM machine for small hole and the result shows that the use of EDM drilling spiral electrode can increase 20% of the working speed as the maximum.
出处
《机械设计与研究》
CSCD
北大核心
2015年第1期89-92,共4页
Machine Design And Research
基金
山西省自然科学基金资助项目(2014011026-3)
