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　　對于礦山機(ji)械(xie)、水泥機(ji)械(xie)等大型工(gong)(gong)件(jian)(jian)(jian)的(de)精整加(jia)工(gong)(gong)到Ra0.4微米，是目前普遍的(de)難題，以(yi)(yi)直徑4米多大型磨機(ji)的(de)中空軸為例，在立車上(shang)車削(xue)(xue)可(ke)以(yi)(yi)保證尺(chi)寸(cun)，一(yi)般很多機(ji)加(jia)工(gong)(gong)企(qi)業(ye)沒有(you)可(ke)以(yi)(yi)磨削(xue)(xue)這樣大工(gong)(gong)件(jian)(jian)(jian)的(de)磨床(chuang)(chuang)，但用千葉輪或者砂輪拋磨，粗糙度可(ke)以(yi)(yi)達到Ra0.6微米，耗時長，甚至拋磨一(yi)周以(yi)(yi)上(shang)，且容易把工(gong)(gong)件(jian)(jian)(jian)磨成橢圓，使(shi)工(gong)(gong)件(jian)(jian)(jian)尺(chi)寸(cun)達不到要(yao)求，尺(chi)寸(cun)超差產生廢品，對于幾十噸(dun)(dun)或者上(shang)百噸(dun)(dun)的(de)工(gong)(gong)件(jian)(jian)(jian)來說，企(qi)業(ye)難以(yi)(yi)承(cheng)受，且加(jia)工(gong)(gong)環境(jing)惡(e)劣，粉塵(chen)對員工(gong)(gong)和機(ji)床(chuang)(chuang)設備均有(you)損害(hai)。

　　對于以上這類大型工(gong)(gong)(gong)件(jian)，在立車(che)上直(zhi)接車(che)削(xue)到(dao)尺寸，一(yi)般(ban)可(ke)以車(che)削(xue)到(dao)粗(cu)(cu)糙度(du)值Ra6.3到(dao)3.2微米(mi)，工(gong)(gong)(gong)件(jian)不需(xu)搬運以及二次裝(zhuang)夾(jia)，直(zhi)接再使用電(dian)致伸縮(suo)(suo)精整(zheng)設(she)備(bei)加(jia)工(gong)(gong)(gong)一(yi)遍，就可(ke)以達到(dao)Ra0.06到(dao)Ra0.08微米(mi)，比普通加(jia)工(gong)(gong)(gong)手段提高幾個級(ji)別(bie)，加(jia)工(gong)(gong)(gong)時間更短(duan)，以加(jia)工(gong)(gong)(gong)面(mian)直(zhi)徑4000毫(hao)米(mi)，高1400毫(hao)米(mi)為例，電(dian)致伸縮(suo)(suo)精整(zheng)設(she)備(bei)加(jia)工(gong)(gong)(gong)僅(jin)需(xu)4小時，且加(jia)工(gong)(gong)(gong)環境良好，粗(cu)(cu)糙度(du)值達到(dao)Ra0.1微米(mi)以下，質(zhi)量(liang)更有(you)保證。