天津機床溜(liu)(liu)板(ban)(ban)移(yi)(yi)動時傾(qing)(qing)斜度差(cha)錯(cuo)檢查(cha)(cha)，將水平(ping)儀置于(yu)溜(liu)(liu)板(ban)(ban)燕尾導軌上(shang)接近刀(dao)架的當(dang)地，筆直于(yu)床身(shen)導軌（即(ji)溜(liu)(liu)板(ban)(ban)行程(cheng)方(fang)向(xiang)）。移(yi)(yi)動溜(liu)(liu)板(ban)(ban)，每隔250mm（或500mm、或小于(yu)此值(zhi)）記(ji)載一次讀數(shu)，在(zai)溜(liu)(liu)板(ban)(ban)的悉數(shu)行程(cheng)上(shang)檢查(cha)(cha)。水平(ping)儀在(zai)1000mm行程(cheng)和悉數(shu)行程(cheng)上(shang)讀數(shu)的較大代(dai)數(shu)差(cha)值(zhi)，即(ji)是傾(qing)(qing)斜度差(cha)錯(cuo)。傾(qing)(qing)斜度差(cha)錯(cuo)以斜率或角值(zhi)表明(ming)。

縱切機(ji)(ji)床(chuang)(chuang)對刀(dao)的(de)(de)(de)原理(li)對于(yu)沈陽數控機(ji)(ji)床(chuang)(chuang)而言，零(ling)件(jian)加工(gong)(gong)之前最關鍵(jian)的(de)(de)(de)一個(ge)操作就是(shi)(shi)保證刀(dao)具(ju)與工(gong)(gong)件(jian)加工(gong)(gong)位置的(de)(de)(de)正確性，即對刀(dao)操作。對刀(dao)的(de)(de)(de)目(mu)的(de)(de)(de)是(shi)(shi)確定對刀(dao)點(dian)(dian)(或工(gong)(gong)件(jian)原點(dian)(dian))在(zai)機(ji)(ji)床(chuang)(chuang)坐標系中的(de)(de)(de)坐標值。而對刀(dao)過程(cheng)就是(shi)(shi)將刀(dao)位點(dian)(dian)與對刀(dao)點(dian)(dian)重合(he)，刀(dao)位點(dian)(dian)是(shi)(shi)刀(dao)具(ju)上(shang)的(de)(de)(de)一個(ge)定位基準(zhun)點(dian)(dian)，對于(yu)車刀(dao)而言，一般就是(shi)(shi)刀(dao)尖；對刀(dao)點(dian)(dian)往往就是(shi)(shi)工(gong)(gong)件(jian)的(de)(de)(de)加工(gong)(gong)原點(dian)(dian)，只要在(zai)機(ji)(ji)床(chuang)(chuang)加工(gong)(gong)允許范圍(wei)內，都可以進行選取。

有條件(jian)時亦可使(shi)用光學平(ping)直(zhi)儀(yi)檢(jian)查，將(jiang)縱切車床光學平(ping)直(zhi)儀(yi)置于(yu)機床一端，反(fan)射鏡(jing)置于(yu)溜板或作業(ye)(ye)臺(tai)面上，在行程的(de)(de)兩個極限方位，調(diao)整平(ping)直(zhi)儀(yi)及反(fan)射鏡(jing)，使(shi)平(ping)行光管的(de)(de)亮十字像(xiang)同(tong)可動分劃板的(de)(de)準線(xian)重合。作業(ye)(ye)臺(tai)每移動500mm，廠家讀數(shu)一次并(bing)作好記載，將(jiang)讀數(shu)順次擺放(fang)畫出作業(ye)(ye)臺(tai)的(de)(de)運動曲線(xian)，再核算1000mm長度上和行程全長上的(de)(de)差錯值。

編(bian)程(cheng)(cheng)原(yuan)(yuan)(yuan)(yuan)點(dian)、工(gong)(gong)(gong)(gong)件(jian)原(yuan)(yuan)(yuan)(yuan)點(dian)的(de)(de)(de)(de)(de)(de)概念(nian)，編(bian)程(cheng)(cheng)坐(zuo)(zuo)(zuo)(zuo)標(biao)(biao)(biao)(biao)系(xi)是為了編(bian)程(cheng)(cheng)的(de)(de)(de)(de)(de)(de)需要(yao)在零(ling)件(jian)圖紙(zhi)上所建(jian)(jian)立(li)(li)起(qi)來的(de)(de)(de)(de)(de)(de)坐(zuo)(zuo)(zuo)(zuo)標(biao)(biao)(biao)(biao)系(xi)，它的(de)(de)(de)(de)(de)(de)坐(zuo)(zuo)(zuo)(zuo)標(biao)(biao)(biao)(biao)原(yuan)(yuan)(yuan)(yuan)點(dian)稱為編(bian)程(cheng)(cheng)原(yuan)(yuan)(yuan)(yuan)點(dian)，它是用來計算(suan)編(bian)程(cheng)(cheng)尺(chi)寸(cun)基點(dian)坐(zuo)(zuo)(zuo)(zuo)標(biao)(biao)(biao)(biao)的(de)(de)(de)(de)(de)(de)基準(zhun)點(dian)。編(bian)程(cheng)(cheng)原(yuan)(yuan)(yuan)(yuan)點(dian)的(de)(de)(de)(de)(de)(de)選(xuan)擇(ze)要(yao)根據零(ling)件(jian)圖上的(de)(de)(de)(de)(de)(de)尺(chi)寸(cun)，位置(zhi)(zhi)的(de)(de)(de)(de)(de)(de)設計基準(zhun)來選(xuan)擇(ze)，一(yi)般(ban)盡可能要(yao)讓(rang)(rang)編(bian)程(cheng)(cheng)原(yuan)(yuan)(yuan)(yuan)點(dian)與設計基準(zhun)重(zhong)合。工(gong)(gong)(gong)(gong)件(jian)原(yuan)(yuan)(yuan)(yuan)點(dian)是在零(ling)件(jian)的(de)(de)(de)(de)(de)(de)加工(gong)(gong)(gong)(gong)過(guo)程(cheng)(cheng)中，為了讓(rang)(rang)機(ji)床(chuang)(chuang)和工(gong)(gong)(gong)(gong)件(jian)之(zhi)間建(jian)(jian)立(li)(li)起(qi)正(zheng)確(que)的(de)(de)(de)(de)(de)(de)相(xiang)對(dui)加工(gong)(gong)(gong)(gong)位置(zhi)(zhi)，從而保證(zheng)加工(gong)(gong)(gong)(gong)軌跡(ji)的(de)(de)(de)(de)(de)(de)正(zheng)確(que)性，而在機(ji)床(chuang)(chuang)的(de)(de)(de)(de)(de)(de)加工(gong)(gong)(gong)(gong)范(fan)圍內所建(jian)(jian)立(li)(li)的(de)(de)(de)(de)(de)(de)加工(gong)(gong)(gong)(gong)坐(zuo)(zuo)(zuo)(zuo)標(biao)(biao)(biao)(biao)系(xi)，它的(de)(de)(de)(de)(de)(de)坐(zuo)(zuo)(zuo)(zuo)標(biao)(biao)(biao)(biao)原(yuan)(yuan)(yuan)(yuan)點(dian)稱為工(gong)(gong)(gong)(gong)件(jian)原(yuan)(yuan)(yuan)(yuan)點(dian)。工(gong)(gong)(gong)(gong)件(jian)坐(zuo)(zuo)(zuo)(zuo)標(biao)(biao)(biao)(biao)原(yuan)(yuan)(yuan)(yuan)點(dian)的(de)(de)(de)(de)(de)(de)選(xuan)擇(ze)是在機(ji)床(chuang)(chuang)的(de)(de)(de)(de)(de)(de)加工(gong)(gong)(gong)(gong)范(fan)圍內進行選(xuan)取，可以在工(gong)(gong)(gong)(gong)件(jian)上，夾(jia)具(ju)上或靠近工(gong)(gong)(gong)(gong)件(jian)和夾(jia)具(ju)的(de)(de)(de)(de)(de)(de)某一(yi)位置(zhi)(zhi)。數控車(che)床(chuang)(chuang)廠家(jia)零(ling)件(jian)被(bei)定位和裝(zhuang)夾(jia)在機(ji)床(chuang)(chuang)上之(zhi)后，相(xiang)應的(de)(de)(de)(de)(de)(de)編(bian)程(cheng)(cheng)原(yuan)(yuan)(yuan)(yuan)點(dian)在機(ji)床(chuang)(chuang)坐(zuo)(zuo)(zuo)(zuo)標(biao)(biao)(biao)(biao)系(xi)中的(de)(de)(de)(de)(de)(de)位置(zhi)(zhi)應與工(gong)(gong)(gong)(gong)件(jian)的(de)(de)(de)(de)(de)(de)加工(gong)(gong)(gong)(gong)原(yuan)(yuan)(yuan)(yuan)點(dian)重(zhong)合。因此需要(yao)通過(guo)對(dui)刀的(de)(de)(de)(de)(de)(de)手(shou)段建(jian)(jian)立(li)(li)工(gong)(gong)(gong)(gong)件(jian)坐(zuo)(zuo)(zuo)(zuo)標(biao)(biao)(biao)(biao)系(xi)即為加工(gong)(gong)(gong)(gong)坐(zuo)(zuo)(zuo)(zuo)標(biao)(biao)(biao)(biao)系(xi)，之(zhi)后通過(guo)調用并(bing)執行程(cheng)(cheng)序中的(de)(de)(de)(de)(de)(de)工(gong)(gong)(gong)(gong)件(jian)坐(zuo)(zuo)(zuo)(zuo)標(biao)(biao)(biao)(biao)系(xi)建(jian)(jian)立(li)(li)指(zhi)令(ling)(ling)，比如零(ling)點(dian)偏置(zhi)(zhi)指(zhi)令(ling)(ling)，建(jian)(jian)立(li)(li)局(ju)部坐(zuo)(zuo)(zuo)(zuo)標(biao)(biao)(biao)(biao)系(xi)指(zhi)令(ling)(ling)等，從而保證(zheng)零(ling)件(jian)的(de)(de)(de)(de)(de)(de)正(zheng)確(que)加工(gong)(gong)(gong)(gong)。