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　　一些大口徑(jing)異型(xing)液壓(ya)缸以及活(huo)塞(sai)桿工(gong)(gong)(gong)件(jian)，如果對(dui)粗糙(cao)度(du)值(zhi)要(yao)(yao)求(qiu)達到(dao)Ra0.2微米(mi)，普通加(jia)工(gong)(gong)(gong)手(shou)段就比較吃力，例如，大型(xing)壓(ya)機上(shang)油缸，直徑(jing)600毫米(mi)以上(shang)，深度(du)500毫米(mi)左(zuo)右，立車(che)(che)(che)車(che)(che)(che)削(xue)后可以達到(dao)尺寸要(yao)(yao)求(qiu)，粗糙(cao)度(du)值(zhi)達到(dao)Ra1.6到(dao)3.2微米(mi)之間，普通工(gong)(gong)(gong)藝為車(che)(che)(che)削(xue)后砂帶拋光，需(xu)要(yao)(yao)拋磨5到(dao)6個小時，仍然難以達到(dao)要(yao)(yao)求(qiu)，粉塵致(zhi)使加(jia)工(gong)(gong)(gong)環境(jing)惡劣，且(qie)存在安全隱(yin)患(huan)。加(jia)工(gong)(gong)(gong)活(huo)塞(sai)類工(gong)(gong)(gong)件(jian)面(mian)臨同樣的(de)問(wen)題，并且(qie)密封部位的(de)溝槽(cao)采用普通工(gong)(gong)(gong)藝手(shou)段無法加(jia)工(gong)(gong)(gong)，由于溝槽(cao)部位車(che)(che)(che)削(xue)后比較粗糙(cao)，對(dui)密封圈(quan)磨損嚴(yan)(yan)重，在后期工(gong)(gong)(gong)件(jian)長時間使用中容易造(zao)(zao)成(cheng)密封不嚴(yan)(yan)，造(zao)(zao)成(cheng)泄漏。

　　采用電(dian)(dian)致(zhi)伸縮精整設(she)備(bei)加工(gong)(gong)(gong)(gong)(gong)以上工(gong)(gong)(gong)(gong)(gong)件，使加工(gong)(gong)(gong)(gong)(gong)變得更為簡單，將工(gong)(gong)(gong)(gong)(gong)件車削尺寸加工(gong)(gong)(gong)(gong)(gong)到(dao)位后，再(zai)用電(dian)(dian)致(zhi)伸縮精整設(she)備(bei)加工(gong)(gong)(gong)(gong)(gong)一遍，可以達到(dao)Ra0.1微米(mi)，符合質(zhi)量要求(qiu)，加工(gong)(gong)(gong)(gong)(gong)時間(jian)更短，以直徑600毫米(mi)，深度500毫米(mi)左(zuo)右工(gong)(gong)(gong)(gong)(gong)件為例，電(dian)(dian)致(zhi)伸縮精整設(she)備(bei)加工(gong)(gong)(gong)(gong)(gong)僅需要30分(fen)鐘左(zuo)右，活塞(sai)桿類(lei)工(gong)(gong)(gong)(gong)(gong)件的溝(gou)槽等也可以輕松加工(gong)(gong)(gong)(gong)(gong)到(dao)Ra0.1微米(mi)以下，提高(gao)(gao)了(le)產品質(zhi)量，減(jian)少了(le)密封圈因溝(gou)槽光潔度差引起的快速磨損，提高(gao)(gao)了(le)使用壽(shou)命。