CNC系統的日常維護主要包括以下幾方面：
1.嚴格制訂并且執行CNC系統的日常維護的規章制度
根據不同數控機床的性能特點，嚴格制訂其CNC系統的日常維護的規章制度，并且在使用和操作中要嚴格執行。
2.應盡量少開數控柜門和強電柜的門
因為，在機械加工車間的空氣中往往含有油霧、塵埃，它們一旦落入數控系統的印刷線路板或者電氣元件上，則易引起元器件的絕緣電阻下降，甚至導致線路板或者電氣元件的損壞。所以，在工作中應盡量少開數控柜門和強電柜的門。
3.定時清理數控裝置的散熱通風系統，以防止數控裝置過熱
散熱通風系統是防止數控裝置過熱的重要裝置。為此，應每天檢查數控柜上各個冷卻風扇運轉是否正常，每半年或者一季度檢查一次風道過濾器是否有堵塞現象，如果有則應及時清理。
4.注意CNC系統的輸入/輸出裝置的定期維護
例(li)如CNC系統的(de)輸入裝置中磁頭的(de)清洗(xi)。

5.定期檢查和更(geng)換直流電機(ji)電刷
在(zai)20世紀80年代生產(chan)的數(shu)控(kong)機床，大多數(shu)采(cai)用(yong)直(zhi)流(liu)(liu)(liu)伺(si)服電(dian)(dian)機，這(zhe)就存在(zai)電(dian)(dian)刷(shua)的磨(mo)損問題，為此對于直(zhi)流(liu)(liu)(liu)伺(si)服電(dian)(dian)機需要定(ding)期檢查和更換直(zhi)流(liu)(liu)(liu)電(dian)(dian)機電(dian)(dian)刷(shua)。
6.經常(chang)監(jian)視CNC裝置用的(de)電網電壓
CNC系(xi)統(tong)對工(gong)作電(dian)網電(dian)壓(ya)有嚴格的(de)要求。例如(ru)FANUC公司生(sheng)產的(de)CNC系(xi)統(tong)，允許電(dian)網電(dian)壓(ya)在(zai)額(e)定值(zhi)的(de)85％～110％的(de)范(fan)圍內波動，否則會(hui)造成CNC系(xi)統(tong)不能正常工(gong)作，甚至(zhi)會(hui)引起CNC系(xi)統(tong)內部電(dian)子元件的(de)損壞。為此要經常檢(jian)測電(dian)網電(dian)壓(ya)，并控制在(zai)定額(e)值(zhi)的(de)–15％～+10％內。
7.存儲器用電池(chi)的定期檢查(cha)和(he)更換(huan)
通(tong)常，CNC系統(tong)中部分CMOS存(cun)儲器中的(de)存(cun)儲內容在(zai)斷電(dian)(dian)(dian)(dian)(dian)時靠電(dian)(dian)(dian)(dian)(dian)池(chi)供電(dian)(dian)(dian)(dian)(dian)保(bao)持。一(yi)般采用(yong)鋰電(dian)(dian)(dian)(dian)(dian)池(chi)或者(zhe)可充(chong)電(dian)(dian)(dian)(dian)(dian)的(de)鎳(nie)鎘電(dian)(dian)(dian)(dian)(dian)池(chi)。當電(dian)(dian)(dian)(dian)(dian)池(chi)電(dian)(dian)(dian)(dian)(dian)壓(ya)下降(jiang)到(dao)一(yi)定(ding)值時，就會造(zao)成(cheng)數(shu)據丟(diu)失(shi)(shi)，因(yin)此(ci)要(yao)(yao)(yao)定(ding)期檢查電(dian)(dian)(dian)(dian)(dian)池(chi)電(dian)(dian)(dian)(dian)(dian)壓(ya)。當電(dian)(dian)(dian)(dian)(dian)池(chi)電(dian)(dian)(dian)(dian)(dian)壓(ya)下降(jiang)到(dao)限定(ding)值或者(zhe)出現電(dian)(dian)(dian)(dian)(dian)池(chi)電(dian)(dian)(dian)(dian)(dian)壓(ya)報警時，就要(yao)(yao)(yao)及時更換(huan)電(dian)(dian)(dian)(dian)(dian)池(chi)。更換(huan)電(dian)(dian)(dian)(dian)(dian)池(chi)時一(yi)般要(yao)(yao)(yao)在(zai)CNC系統(tong)通(tong)電(dian)(dian)(dian)(dian)(dian)狀態下進行，這才不會造(zao)成(cheng)存(cun)儲參(can)數(shu)丟(diu)失(shi)(shi)。一(yi)旦數(shu)據丟(diu)失(shi)(shi)，在(zai)調換(huan)電(dian)(dian)(dian)(dian)(dian)池(chi)后，可重(zhong)新就參(can)數(shu)輸(shu)入。
8.CNC系(xi)統長期(qi)不(bu)用時的(de)維護(hu)
當數控機(ji)床(chuang)長(chang)期閑置不用時，也要定期對(dui)CNC系統進行維護保養(yang)。在機(ji)床(chuang)未通(tong)電(dian)(dian)(dian)(dian)(dian)時，用備(bei)份電(dian)(dian)(dian)(dian)(dian)池給芯(xin)片供電(dian)(dian)(dian)(dian)(dian)，保持數據不變。機(ji)床(chuang)上電(dian)(dian)(dian)(dian)(dian)池在電(dian)(dian)(dian)(dian)(dian)壓(ya)過低時，通(tong)常(chang)會在顯示屏幕上給出報(bao)警提(ti)示。在長(chang)期不使用時，要經常(chang)通(tong)電(dian)(dian)(dian)(dian)(dian)檢查是(shi)(shi)否有報(bao)警提(ti)示，并及時更換備(bei)份電(dian)(dian)(dian)(dian)(dian)池。經常(chang)通(tong)電(dian)(dian)(dian)(dian)(dian)可以防止電(dian)(dian)(dian)(dian)(dian)器元件受(shou)潮或印制板受(shou)潮短(duan)路(lu)或斷路(lu)等長(chang)期不用的(de)機(ji)床(chuang)，每周(zhou)至(zhi)少通(tong)電(dian)(dian)(dian)(dian)(dian)兩(liang)次以上。具體做法(fa)是(shi)(shi)：
首(shou)先，應經(jing)常給CNC系(xi)統(tong)通電(dian)(dian)，在(zai)機(ji)床鎖(suo)住不動的情況下，讓機(ji)床空運行。其次，在(zai)空氣濕(shi)度較(jiao)大的梅雨季節，應天(tian)天(tian)給CNC系(xi)統(tong)通電(dian)(dian)，這樣可利用(yong)電(dian)(dian)器(qi)元件本身(shen)的發(fa)(fa)熱來驅(qu)走數控(kong)柜內的潮氣，以**電(dian)(dian)器(qi)元件的性(xing)能穩定可靠。生產實踐證明，如果長期不用(yong)的數控(kong)機(ji)床，過了梅雨天(tian)后(hou)則往往一開(kai)機(ji)就(jiu)容易發(fa)(fa)生故(gu)障(zhang)。
此外(wai)，對于(yu)采(cai)用(yong)直流伺服電(dian)(dian)動(dong)機的數控機床，如果閑置半年以(yi)上不用(yong)，則應將(jiang)電(dian)(dian)動(dong)機的電(dian)(dian)刷取(qu)出來(lai)，以(yi)避(bi)免由于(yu)化學腐蝕作用(yong)而導(dao)致換向器(qi)表(biao)面的腐蝕，**換向性能(neng)。
9.備用印(yin)刷線路板的維護
對于已(yi)購置的備用印刷線路板應(ying)定期裝(zhuang)到CNC裝(zhuang)置上通(tong)電運(yun)行(xing)一段時間，以防損壞。
10.CNC發生故障時的處(chu)理(li)
一(yi)旦CNC系統發生故障，操作人員應采取急停(ting)措(cuo)施(shi)，停(ting)止系統運(yun)行，并且(qie)保護好現場。并且(qie)協助維(wei)修人員做(zuo)好維(wei)修前期的準備工作。

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