文档介绍:数控技术应用专业英语大连理工大学出版社CSinkerEDMMachinePartANewWordsandPhrasesTextExercisesReadingMaterialPartBNewWordsandPhrasesdischarge [dis'tʃɑ:dʒ] [i'lektrəud] [pʌls]['rezəvwɑ:],蓄水池,积蓄,储藏potential [pə'tenʃəl],电势dielectric [ˌdaii'lektrik],绝缘体plasma ['plæzmə] [spɑ:k][melt],使熔化,使消散vaporize ['veipəraiz]v.(使)蒸发erode [i'rəud],侵蚀hydraulic [hai'drɔ:lik],水压的transmit[trænz'mit],传送graphite ['græfait][brɑ:s]['kɔpə]['tʌŋstən] [ziŋk](1)ThebasicprincipleofsinkerEDM(1)电火花成型加工原理Sinkerelectricaldischargemachining(sinkerEDM),alsoknownasDie-SinkerEDMandDie-EDM,isthattheelectrodeandworkpieceareseparatelyconnectedtothetwopolesofpulsepowersupply,(SinkerEDM)也被称为Die-SinkerEDM和Die-EDM,是将电极和工件分别连接到脉冲电源的两极,脉冲电源在电极和工件之间产生一个电场;,,电解液被击穿形成一个放电通道,并且产生一个小的火花放电;Metalremovalbyaseriesofdiscreteelectricaldischarges(sparks),从而去除材料。,,放电间隙不断增大,机床通过不断降低电极来保持不间断的放电过程。。(2)CharacteristicsofsinkerEDM(2)电火花成型加工特点SomeoftheadvantagesofsinkerEDMinclude:电火花成型加工的优点有:·Complexshapesthatwouldotherwisebedifficulttoproducewithconventionalcuttingtools.·可以加工用其他传统切削刀具无法加工的形状。·Extremelyhardmaterialtoveryclosetolerances.·越硬的材料加工精度越高。