削边电极对小深孔电火花加工速度影响的实验研究

摘要

针对电火花小深孔加工过程中,因电蚀产物排泄不畅而导致的加工速度慢、电极磨损严重、“二次放电”引起的锥孔等现象,为了增大排屑空间,对普通单孔管电极进行磨削处理,小深孔的加工实验研究结果表明:随着孔的深径比增加,经磨削处理过的电极的加工速度得到了显著提高,实验范围内加工最大深径比30:1的孔,比普通电极的加工速度提高了43.4％.%For the EDM small deep hole machining process,because the corrosion product is not smooth due to the slow processing speed,electrode wear,"the two discharge" and taper phenomenon,in order to increase the chip space,common single hole tube electrode is grinded,the study of small deep hole machining experiment results shows that with the increase of depth-diameter ratio of hole,the processing speed of the electrode after grinding has been significantly accelerated,the range of processing holes of depth-diameter ratio 30:1,the processing speed is 43.4％ higher than that of the conventional electrodes.