電(dian)火(huo)花穿孔(kong)(kong)機是指用(yong)(yong)電(dian)火(huo)花加工(gong)(gong)(gong)原(yuan)理(li)，加工(gong)(gong)(gong)尺寸小于(yu)5mm的孔(kong)(kong)的電(dian)火(huo)花加工(gong)(gong)(gong)機床。用(yong)(yong)于(yu)加工(gong)(gong)(gong)中小型(xing)沖模，其加工(gong)(gong)(gong)特(te)點是不(bu)受金(jin)屬材料硬度的限制，可先將(jiang)模板淬火(huo)后用(yong)(yong)本機加工(gong)(gong)(gong)所(suo)需要的孔(kong)(kong)型(xing)，以保證(zheng)質量和提(ti)高(gao)使用(yong)(yong)壽命。工(gong)(gong)(gong)具電(dian)極材料采用(yong)(yong)鋼(gang)、鑄鐵、銅均可。

穿孔(kong)(kong)(kong)機(ji)根據應(ying)(ying)用(yong)的(de)介質(zhi)不(bu)同大(da)致分為兩種，一(yi)(yi)種是(shi)液(ye)(ye)體(ti)穿孔(kong)(kong)(kong)機(ji)，由于液(ye)(ye)體(ti)加(jia)(jia)工時要(yao)通過(guo)銅棒小孔(kong)(kong)(kong)，可能(neng)堵塞銅棒小孔(kong)(kong)(kong)，所(suo)以(yi)最(zui)小可加(jia)(jia)工0.15mm的(de)細孔(kong)(kong)(kong)，深度也只能(neng)加(jia)(jia)工350mm。是(shi)普遍應(ying)(ying)用(yong)的(de)，另外一(yi)(yi)種是(shi)氣體(ti)穿孔(kong)(kong)(kong)機(ji)，經過(guo)銅棒小孔(kong)(kong)(kong)的(de)介質(zhi)采用(yong)的(de)是(shi)氣體(ti)，所(suo)以(yi)不(bu)易被堵塞，可加(jia)(jia)工更精密的(de)小孔(kong)(kong)(kong)。

工作原理及應用

電(dian)(dian)(dian)火(huo)花(hua)(hua)穿孔(kong)(kong)(kong)機也稱電(dian)(dian)(dian)火(huo)花(hua)(hua)打(da)孔(kong)(kong)(kong)機、電(dian)(dian)(dian)火(huo)花(hua)(hua)小孔(kong)(kong)(kong)機、電(dian)(dian)(dian)火(huo)花(hua)(hua)細孔(kong)(kong)(kong)放電(dian)(dian)(dian)機，其工作原理(li)是利(li)用(yong)連續上下(xia)垂直運動的細金(jin)屬銅(tong)管（稱為電(dian)(dian)(dian)極(ji)絲(si)）作電(dian)(dian)(dian)極(ji)，對工件進行(xing)脈沖火(huo)花(hua)(hua)放電(dian)(dian)(dian)蝕(shi)除(chu)金(jin)屬成型。與(yu)電(dian)(dian)(dian)火(huo)花(hua)(hua)線切割機床、成型機不同(tong)的是，它電(dian)(dian)(dian)脈沖的電(dian)(dian)(dian)極(ji)是空心銅(tong)棒，介質從銅(tong)棒孔(kong)(kong)(kong)中間的細孔(kong)(kong)(kong)穿過，起冷卻和排屑(xie)作用(yong)。

電(dian)極與金屬間放電(dian)產生高溫(wen)腐蝕金屬達到穿(chuan)孔(kong)(kong)(kong)的(de)(de)(de)目的(de)(de)(de)，用于加(jia)工超硬(ying)鋼材、硬(ying)質合金、銅、鋁及任何可導電(dian)性(xing)物質的(de)(de)(de)細(xi)孔(kong)(kong)(kong)。最小可加(jia)工0.015mm的(de)(de)(de)小孔(kong)(kong)(kong)，也可加(jia)工帶有錐度的(de)(de)(de)小孔(kong)(kong)(kong)，被(bei)廣(guang)泛(fan)使用在精(jing)密模具加(jia)工中，一般被(bei)當作電(dian)火花線(xian)切割機(ji)床(chuang)的(de)(de)(de)配套設備，用于電(dian)火花線(xian)切割加(jia)工的(de)(de)(de)穿(chuan)絲(si)孔(kong)(kong)(kong)、化纖噴(pen)絲(si)頭(tou)、噴(pen)絲(si)板(ban)的(de)(de)(de)噴(pen)絲(si)孔(kong)(kong)(kong)、濾(lv)板(ban)、篩(shai)板(ban)的(de)(de)(de)群孔(kong)(kong)(kong)、發動機(ji)葉片、缸體的(de)(de)(de)散熱孔(kong)(kong)(kong)、液(ye)壓、氣(qi)動閥體的(de)(de)(de)油路、氣(qi)路孔(kong)(kong)(kong)等(deng)。