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　　一(yi)些大口徑異(yi)型液壓缸以(yi)(yi)及(ji)活(huo)(huo)塞桿工件，如果對粗(cu)糙(cao)度值要求達到(dao)(dao)(dao)Ra0.2微(wei)米，普通加工手段(duan)就比較吃力，例如，大型壓機上(shang)油缸，直徑600毫(hao)米以(yi)(yi)上(shang)，深度500毫(hao)米左右，立(li)車車削后(hou)可以(yi)(yi)達到(dao)(dao)(dao)尺(chi)寸(cun)要求，粗(cu)糙(cao)度值達到(dao)(dao)(dao)Ra1.6到(dao)(dao)(dao)3.2微(wei)米之間，普通工藝為車削后(hou)砂帶拋(pao)(pao)光，需要拋(pao)(pao)磨(mo)5到(dao)(dao)(dao)6個(ge)小時(shi)(shi)，仍(reng)然難以(yi)(yi)達到(dao)(dao)(dao)要求，粉塵致使加工環境惡劣，且(qie)存(cun)在安全隱患。加工活(huo)(huo)塞類工件面(mian)臨同樣(yang)的問題(ti)，并且(qie)密封(feng)部(bu)位(wei)的溝槽采(cai)用普通工藝手段(duan)無法加工，由于(yu)溝槽部(bu)位(wei)車削后(hou)比較粗(cu)糙(cao)，對密封(feng)圈(quan)磨(mo)損嚴重，在后(hou)期工件長時(shi)(shi)間使用中容易造(zao)成(cheng)密封(feng)不嚴，造(zao)成(cheng)泄漏。

　　采(cai)用電致(zhi)伸(shen)縮精(jing)(jing)整(zheng)設(she)備加(jia)(jia)工(gong)(gong)(gong)以上工(gong)(gong)(gong)件(jian)，使加(jia)(jia)工(gong)(gong)(gong)變得(de)更(geng)為簡單(dan)，將(jiang)工(gong)(gong)(gong)件(jian)車削尺寸加(jia)(jia)工(gong)(gong)(gong)到位后，再用電致(zhi)伸(shen)縮精(jing)(jing)整(zheng)設(she)備加(jia)(jia)工(gong)(gong)(gong)一遍，可以達到Ra0.1微(wei)米(mi)(mi)，符合質量要求，加(jia)(jia)工(gong)(gong)(gong)時間(jian)更(geng)短，以直(zhi)徑600毫(hao)米(mi)(mi)，深(shen)度500毫(hao)米(mi)(mi)左右工(gong)(gong)(gong)件(jian)為例，電致(zhi)伸(shen)縮精(jing)(jing)整(zheng)設(she)備加(jia)(jia)工(gong)(gong)(gong)僅(jin)需要30分鐘左右，活塞桿(gan)類工(gong)(gong)(gong)件(jian)的溝槽(cao)等也可以輕松加(jia)(jia)工(gong)(gong)(gong)到Ra0.1微(wei)米(mi)(mi)以下，提高了(le)產品質量，減少了(le)密封(feng)圈(quan)因溝槽(cao)光潔度差引起的快速磨損，提高了(le)使用壽命(ming)。