电火花加工中电极间放电状态对加工稳定性的影响  

Effect of Discharge State of EDM Electrodes Gap to the Machining Stability

作　　者：杨晋平[1] 曹明让[2] 

机构地区：[1]山西交通职业技术学院,山西太原030031 [2]太原理工大学机械工程学院,山西太原030024

出　　处：《机械管理开发》2010年第1期48-49,共2页Mechanical Management and Development

基　　金：山西省自然科学基金项目资助.(项目编号:2009011029-3)

摘　　要：分析了对电火花加工中的放电脉冲波形,讨论了各种的脉冲波形及其放电状态对加工稳定性的影响。由实测的放电电压看出,理想的火花放电维持时间很短,由于各种不利因素的存在,大部分时间内,加工是火花放电、过渡放电、电弧放电交替地概率性地出现。一般情况下,过渡放电和电弧放电约占整个脉冲数量的20%-50%;当非火花脉冲数大于50%时,加工将不能正常进行,最终导致不能加工。The electrical impulse shape of EDM is analysed ; Base on testing dischage gap voltage, the ettect ot electrical imptuse shape of various discharge state and the discharge state to machining stability is introduced ;The experimental result shows that the maintain time of ideal electrical discharge is very short ;In majority of the time, the machining put up alternation between electrical discharge, transitional discharge stage and arc discharge, as a result of the unfavourable effect, the transitional discharge and arc discharge stage is 20-50% of whole discharge. When it is bigger than 50% that non electrical discharge expend times, the machining will is so difficult to progress.

关 键 词：电火花加工 放电状态 加工稳定性 

分 类 号：TG661[金属学及工艺—金属切削加工及机床]