摘要
微细电火花加工由于不受加工材料硬度的限制而被广泛应用于微结构加工中,为提高加工质量并在一定程度上降低电极长度损耗,以微槽微细电火花一次性加工过程中所需时间和电极长度损耗为优化目标,通过响应曲面法优化加工工艺参数。研究结果表明:当加工工艺参数设置为峰值电流I_(p)=12 A、峰值电压U_(p)=90 V、脉冲频率f_(p)=130 kHz时,加工时间和电极长度损耗得到有效优化。为进一步比较一次性加工和分层铣削加工的性能和质量,在优化参数组合下对比一次性加工和不同分层层数铣削加工后的微槽质量。试验结果表明:分层铣削加工的微槽深度和宽度一致性明显优于一次性加工,且随着分层层数的增加,加工时间有所增加、但电极长度损耗明显减小,由此可说明分层铣削加工能有效提高加工性能与加工质量。
Micro-EDM is widely used in microstructure machining because it is not limited by the hardness of material.To improve machining quality and to reduce electrode length wear to a certain extent,machining time and electrode length wear in disposable machining during microgroove micro-EDM are taken as the optimization objectives by response surface method.The results indicate that machining time and electrode length wear have been optimized to a certain extent with I_(p)=12 A,U_(p)=90 V,f_(p)=130 kHz.To further investigate machining performance and quality of disposable machining and layered milling machining in micro-EDM,the quality of microgroove machined by disposable machining and layered milling machining with different number of layers under optimized parameters are compared.The results show that the consistency of microgroove depth and width by layered milling machining is significantly better than disposable machining.With the increase in the number of layers,machining time increases insignificantly and electrode length wear decreases significantly,which shows that the machining performance and machining quality can be effectively improved by layered milling machining.
作者
张晓冬
董思均
王力泽
李一全
于朋
ZHANG Xiaodong;DONG Sijun;WANG Lize;LI Yiquan;YU Peng(Key Laboratory of Cross-scale Micro-nano Manufacturing,College of Electromechanical Engineering,Changchun University of Science and Technology,Changchun 130022,China)
出处
《电加工与模具》
北大核心
2025年第6期12-17,共6页
Electromachining & Mould
基金
吉林省科技发展计划项目(20240302056GX)。
