分层供液电火花线切割加工研究

Research on electric discharge wire cutting machining with layered liquid supply

分别采用常规供液和分层供液对缸筒类零件进行电火花线切割加工对比试验。结果表明,分层供液可在火花放电全过程实现电极丝顺向运丝加工,解决了常规供液方式下电极丝逆向运丝导致的缸筒类零件内部供液不足的问题;提高了极间工作液流速与流量,增强了排屑能力,扩大了放电间隙,改善了极间放电条件,从而提高了火花放电效率和稳定性,对工件切割速度的提高和表面加工质量的改善有重要意义。

Comparative experiments were conducted on the electric discharge wire cutting machining of cylinder type parts through conventional and layered liquid supply.Research found that the processing of electrode wire in the forward direction through layered liquid supply can be achieved in the entire process of spark discharge,the problem of insufficient internal liquid supply inside cylinder type parts by reverse electrode wire transport was solved,the interpolar working fluid flow rate and flow rate were increased,the chip removal capacity was enhanced,the discharge gap was enlarged and the interpolar discharge conditions was improved.The processing of electrode wire in the forward direction raised the spark discharge efficiency and stability and play an important role in the improvement of workpiece cutting speed and surface processing quality.