振动辅助电弧铣削加工技术实验研究

摘要

Through the summary of the mechanism electro-arc machining (EAM) and EAM milling,vibration assisted electro-arc milling (V-EAM) was proposed. Experimental equipment has been developed and the discharge waveforms with and without vibration were analyzed. The effects of vibration frequency on material removal rate (MRR) and tool wear ratio (TWR) were studies. The results showed that the vibration of certain high frequency and large amplitude was of benefit to increasing MRR and decreasing TWR,which improving the machining precision further. The positive impact of vibration has been attributed to its abilities of increasing discharges and reducing short circuits.%通过对电弧加工技术、电弧铣削加工技术及其机理的总结,提出了振动辅助电弧铣削加工技术.利用自行研制的实验装置,对有、无叠加振动的铣削加工放电波形进行了分析,研究了振动频率对加工速度、电极损耗的影响.结果表明:在较高频率与较大振幅的条件下,通过叠加振动可提高电弧铣削过程的稳定性,并提升加工速度,降低电极相对损耗,进而改善加工精度.振动所起的良好作用是由于叠加振动能促进放电并减少短路.