針對微小孔(kong)電(dian)火(huo)花加(jia)工(gong)(EDM)放電(dian)環境惡劣、放電(dian)間隙狀態復(fu)雜(za)多變(bian)，以及采(cai)用傳統的PID控(kong)制策(ce)略(lve)(lve)難于達(da)到(dao)預期效(xiao)果(guo)等問題，提出(chu)了一(yi)種(zhong)基(ji)于多層壓電(dian)陶瓷(ci)疊(die)加(jia)驅動下(xia)的控(kong)制策(ce)略(lve)(lve)，并對其進行(xing)了控(kong)制算法(fa)研究，設計了一(yi)種(zhong)微小孔(kong)電(dian)加(jia)工(gong)微進給模糊PID自適應控(kong)制系統，并進行(xing)了仿i真試驗來(lai)驗證其控(kong)制效(xiao)果(guo)。研究結果(guo)表明，采(cai)用模糊自適應控(kong)制策(ce)略(lve)(lve)能加(jia)快微進給系統的響應速度(du)，具有(you)穩(wen)定性好(hao)、精度(du)高等優點，并得(de)到(dao)了良(liang)好(hao)的控(kong)制效(xiao)果(guo)，為(wei)微小孔(kong)電(dian)加(jia)工(gong)機床的實(shi)際應用打下(xia)了良(liang)好(hao)的理論基(ji)礎。

電(dian)(dian)火(huo)花小(xiao)孔(kong)機(ji)屬(shu)于電(dian)(dian)火(huo)花加工(gong)(gong)(gong)(Electro Spark Erosion)又稱放電(dian)(dian)加工(gong)(gong)(gong)(Electro Discharge Machining)機(ji)床(chuang)的一種。工(gong)(gong)(gong)作(zuo)原(yuan)理:利(li)用連(lian)續移動的細金屬(shu)絲(si)(稱為電(dian)(dian)極絲(si))作(zuo)電(dian)(dian)極，電(dian)(dian)火(huo)花穿孔(kong)機(ji)，對(dui)工(gong)(gong)(gong)件進(jin)行脈沖火(huo)花放電(dian)(dian)蝕除金屬(shu)、切割成(cheng)型(xing)。與電(dian)(dian)火(huo)花線切割機(ji)床(chuang)、成(cheng)型(xing)機(ji)不同的是(shi)，它電(dian)(dian)脈沖的電(dian)(dian)極是(shi)空(kong)心(xin)銅棒(bang)。介(jie)質從銅棒(bang)孔(kong)穿過與工(gong)(gong)(gong)件發生(sheng)放電(dian)(dian)，腐(fu)蝕金屬(shu)達(da)到穿孔(kong)的目的，用于加工(gong)(gong)(gong)超硬鋼材、硬質合金、銅、鋁及(ji)任何可導電(dian)(dian)性物質的細孔(kong)。

電火花小孔機主要用(yong)途和適用(yong)范(fan)圍：

本(ben)機(ji)床操作簡單方便，主軸(zhou)采用(yong)(yong)直(zhi)流伺服或步進電(dian)機(ji)驅(qu)動(dong)，電(dian)火花穿孔(kong)機(ji)廠家，轉速可調(diao)(diao)，加(jia)工(gong)穩定性好(hao)，噪音低。工(gong)作臺移動(dong)光(guang)柵數顯，可以根據(ju)電(dian)極-工(gong)件和電(dian)極材(cai)料(liao)的(de)不同(tong)選擇加(jia)工(gong)參(can)數，參(can)數調(diao)(diao)節范圍(wei)大。可以直(zhi)接從工(gong)件曲(qu)面、斜面穿入。工(gong)件液(ye)可直(zhi)接使用(yong)(yong)自來(lai)水(shui)(shui)，用(yong)(yong)純凈水(shui)(shui)（蒸餾水(shui)(shui)、去離子水(shui)(shui)）加(jia)工(gong)效果更佳。

本機床(chuang)主要用于加工不銹鋼、淬火鋼、硬質合金、銅、鋁等(deng)各種導(dao)電材料上(shang)深(shen)徑(jing)比(bi)大的小孔。深(shen)徑(jing)比(bi)可達(da)200：1。

本(ben)機床也能用(yong)于蝕除折斷(duan)在工件中的鉆頭、絲(si)錐(zhui)而不(bu)損壞原孔或(huo)螺紋。