CAJ | 학술논문

微小孔加工时的放电间隙较小，排屑、消电离状态差，放电效率低，直接影响加工效率和电极损耗；超声振动可改善排屑、消电离状态，能提高放电效率。将超声引入微细电火花加工，通过工件的超声振动，进行超声功率、小孔孔径、脉冲频率的微小孔电火花加工工艺试验研究，结果表明：加工不同孔径时，超声功率及电源频率都存在一个最佳值；加工条件合适时，超声复合微细电火花加工优于常规微细电火花加工。
미소공가공시적방전간극교소，배설、소전리상태차，방전효솔저，직접영향가공효솔화전겁손모；초성진동가개선배설、소전리상태，능제고방전효솔。장초성인입미세전화화가공，통과공건적초성진동，진행초성공솔、소공공경、맥충빈솔적미소공전화화가공공예시험연구，결과표명：가공불동공경시，초성공솔급전원빈솔도존재일개최가치；가공조건합괄시，초성복합미세전화화가공우우상규미세전화화가공。
The discharge gap was very small,the state of chip removal and deionization was poor and discharge rate is low when the micro hole was machining. Ultrasonic vibration assisted could improve the state of chip removal,deionization and discharge rate. While ultrasonic vibration was used to micro eletro-discharge machining ,the experiments of micro eletro-discharge machining were carried out on ultrasonic power,hole diameter,pulse frequency. The result shows that ultrasonic power and power frequency had optimum values when hole of different sizes were machined. If machining conditions were right,ultrasonic assisted micro electro-discharge machining would be better than conventional micro electro-discharge machining.