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　　一些大(da)口(kou)徑異(yi)型(xing)液壓(ya)缸(gang)(gang)以(yi)(yi)及活(huo)塞桿(gan)工(gong)(gong)(gong)件(jian)(jian)，如果對(dui)(dui)粗糙度(du)值要(yao)(yao)求(qiu)達到(dao)(dao)Ra0.2微(wei)米，普(pu)通(tong)加工(gong)(gong)(gong)手段(duan)就比較(jiao)(jiao)吃力，例如，大(da)型(xing)壓(ya)機上(shang)油缸(gang)(gang)，直徑600毫米以(yi)(yi)上(shang)，深度(du)500毫米左右，立車(che)(che)車(che)(che)削后可(ke)以(yi)(yi)達到(dao)(dao)尺寸要(yao)(yao)求(qiu)，粗糙度(du)值達到(dao)(dao)Ra1.6到(dao)(dao)3.2微(wei)米之間，普(pu)通(tong)工(gong)(gong)(gong)藝(yi)為車(che)(che)削后砂帶拋光，需要(yao)(yao)拋磨(mo)5到(dao)(dao)6個小時，仍(reng)然難以(yi)(yi)達到(dao)(dao)要(yao)(yao)求(qiu)，粉塵(chen)致使加工(gong)(gong)(gong)環境惡劣，且(qie)存(cun)在安全隱患。加工(gong)(gong)(gong)活(huo)塞類工(gong)(gong)(gong)件(jian)(jian)面(mian)臨同樣的問題，并且(qie)密封部位的溝槽(cao)采用(yong)普(pu)通(tong)工(gong)(gong)(gong)藝(yi)手段(duan)無法加工(gong)(gong)(gong)，由于溝槽(cao)部位車(che)(che)削后比較(jiao)(jiao)粗糙，對(dui)(dui)密封圈(quan)磨(mo)損嚴重，在后期(qi)工(gong)(gong)(gong)件(jian)(jian)長時間使用(yong)中(zhong)容易造(zao)成密封不嚴，造(zao)成泄漏(lou)。

　　采用(yong)電致(zhi)伸縮(suo)精整設備(bei)加(jia)工(gong)以上工(gong)件，使(shi)加(jia)工(gong)變(bian)得更為(wei)(wei)簡單(dan)，將工(gong)件車(che)削尺寸加(jia)工(gong)到位(wei)后，再用(yong)電致(zhi)伸縮(suo)精整設備(bei)加(jia)工(gong)一遍，可以達到Ra0.1微米(mi)，符合質量要求(qiu)，加(jia)工(gong)時間更短(duan)，以直(zhi)徑600毫米(mi)，深度500毫米(mi)左右工(gong)件為(wei)(wei)例(li)，電致(zhi)伸縮(suo)精整設備(bei)加(jia)工(gong)僅需要30分鐘(zhong)左右，活(huo)塞桿類工(gong)件的溝槽等(deng)也可以輕松加(jia)工(gong)到Ra0.1微米(mi)以下，提(ti)高了(le)產品質量，減少了(le)密(mi)封圈因溝槽光潔度差引起的快速磨(mo)損，提(ti)高了(le)使(shi)用(yong)壽命。