如何判別臥式加工(gong)(gong)(gong)(gong)中(zhong)心(xin)的(de)精度？加工(gong)(gong)(gong)(gong)中(zhong)心(xin)是指備有刀(dao)(dao)庫，具有自動換刀(dao)(dao)功能，對工(gong)(gong)(gong)(gong)件一次裝夾后能進行多(duo)工(gong)(gong)(gong)(gong)序(xu)加工(gong)(gong)(gong)(gong)的(de)數(shu)(shu)控(kong)機(ji)(ji)床。加工(gong)(gong)(gong)(gong)中(zhong)心(xin)是一種高(gao)度機(ji)(ji)電一體化(hua)的(de)產品，工(gong)(gong)(gong)(gong)件裝夾后，數(shu)(shu)控(kong)系統能控(kong)制(zhi)機(ji)(ji)床按不同工(gong)(gong)(gong)(gong)序(xu)自動選擇、更換刀(dao)(dao)具，自動對刀(dao)(dao)、自動改(gai)變主軸(zhou)轉(zhuan)速、進給量(liang)等(deng)(deng)，可連續完(wan)成鉆(zhan)、鏜(tang)、銑、鉸(jiao)、攻絲等(deng)(deng)多(duo)種工(gong)(gong)(gong)(gong)序(xu)。因(yin)而大大減少了工(gong)(gong)(gong)(gong)件裝夾時間(jian)，測量(liang)和機(ji)(ji)床調(diao)整等(deng)(deng)輔助工(gong)(gong)(gong)(gong)序(xu)時間(jian)，對加工(gong)(gong)(gong)(gong)形狀比(bi)較(jiao)復雜，精度要求較(jiao)高(gao)，品種更換頻繁的(de)零(ling)件具有良好(hao)的(de)經濟效果(guo)。

加工精(jing)度(du)是指加工中(zhong)心產(chan)后零(ling)件表面的實際(ji)尺寸、形狀、位(wei)置三種幾何參數(shu)與圖紙要求(qiu)的理想幾何參數(shu)的符合程度(du)。加工精(jing)度(du)包括以下(xia)三個方面內容：

尺寸精(jing)度：指加工后(hou)零(ling)件的實際尺寸與零(ling)件尺寸的公(gong)差帶中心(xin)的相符合(he)程度。

形(xing)狀精度(du)：指加工后的(de)零件(jian)表面的(de)實(shi)際幾何(he)形(xing)狀與理想的(de)幾何(he)形(xing)狀的(de)相(xiang)符合程度(du)。

位置(zhi)精度：指加(jia)工后零件(jian)有關表(biao)面之間的實際位置(zhi)與理想的加(jia)工位置(zhi)。