為適應(ying)全球(qiu)制造行業(ye)的需求，數控(kong)系(xi)統(tong)(tong)(tong)網絡化是(shi)必(bi)然發(fa)展方向。網絡可以把世(shi)界(jie)上的資(zi)源進(jin)行最優配置，數控(kong)系(xi)統(tong)(tong)(tong)的網絡化最先是(shi)企(qi)(qi)業(ye)內(nei)部的數控(kong)系(xi)統(tong)(tong)(tong)網絡化，數控(kong)之間通(tong)過企(qi)(qi)業(ye)內(nei)部局域網進(jin)行相互通(tong)信，然后再經由(you)因特(te)網通(tong)向企(qi)(qi)業(ye)外部，這就是(shi)所謂(wei)的Inter-net/Internet技術。這樣就把世(shi)界(jie)上幾(ji)乎所有的數控(kong)系(xi)統(tong)(tong)(tong)聯(lian)系(xi)起來，促成了世(shi)界(jie)資(zi)源的優化配置。
隨著(zhu)加工(gong)效率的(de)提(ti)高(gao)，人們(men)對(dui)物質需求(qiu)的(de)大(da)量(liang)增加，數(shu)(shu)控系(xi)統(tong)工(gong)作時(shi)(shi)(shi)間(jian)越(yue)來越(yue)長(chang)(chang)，這就(jiu)必(bi)(bi)然需要數(shu)(shu)控系(xi)統(tong)在長(chang)(chang)時(shi)(shi)(shi)間(jian)內能(neng)夠保(bao)證(zheng)其穩(wen)定性(xing)(xing)，加工(gong)的(de)產品才能(neng)合格(ge)。這就(jiu)對(dui)數(shu)(shu)控系(xi)統(tong)提(ti)出了高(gao)可靠性(xing)(xing)的(de)要求(qiu)，對(dui)于(yu)每(mei)天工(gong)作兩班的(de)無(wu)人工(gong)廠(chang)而(er)言，如果要求(qiu)在16小時(shi)(shi)(shi)內連續正(zheng)常(chang)工(gong)作、無(wu)故(gu)障率達(da)99%以上，則數(shu)(shu)控車(che)床的(de)平均無(wu)故(gu)障運行(xing)時(shi)(shi)(shi)間(jian)就(jiu)必(bi)(bi)須(xu)(xu)大(da)于(yu)3000小時(shi)(shi)(shi)。這就(jiu)要求(qiu)數(shu)(shu)控配置、主軸(zhou)及伺服驅動等(deng)的(de)平均無(wu)故(gu)障運行(xing)時(shi)(shi)(shi)間(jian)必(bi)(bi)須(xu)(xu)在10萬小時(shi)(shi)(shi)以上。日本FANUC系(xi)統(tong)早(zao)在20世紀80年代末(mo)就(jiu)能(neng)夠達(da)到這種高(gao)可靠性(xing)(xing)的(de)要求(qiu)，現在正(zheng)向更高(gao)可靠性(xing)(xing)方向發展。
在(zai)生(sheng)產過程中(zhong)，往(wang)往(wang)發現這(zhe)(zhe)樣(yang)的(de)(de)(de)現象：一(yi)個(ge)零件本身(shen)被刀具加(jia)工(gong)(gong)(gong)的(de)(de)(de)時(shi)(shi)間不長，而工(gong)(gong)(gong)人(ren)裝(zhuang)夾的(de)(de)(de)時(shi)(shi)間有(you)(you)時(shi)(shi)候大于加(jia)工(gong)(gong)(gong)時(shi)(shi)間。這(zhe)(zhe)種在(zai)零件加(jia)工(gong)(gong)(gong)過程中(zhong)大量(liang)的(de)(de)(de)無(wu)功(gong)效(xiao)時(shi)(shi)間對于生(sheng)產來說(shuo)是不利的(de)(de)(de)，所以(yi)(yi)現代(dai)自動(dong)化(hua)高(gao)的(de)(de)(de)工(gong)(gong)(gong)廠(chang)一(yi)般的(de)(de)(de)數控車床配有(you)(you)工(gong)(gong)(gong)件搬運、自動(dong)上(shang)下料、自動(dong)換刀等系統(tong)，可(ke)以(yi)(yi)盡可(ke)能降(jiang)低這(zhe)(zhe)些無(wu)功(gong)效(xiao)時(shi)(shi)間。這(zhe)(zhe)種能夠把多種不同功(gong)能的(de)(de)(de)系統(tong)整合在(zai)一(yi)臺數控車床的(de)(de)(de)過程就是數控系統(tong)的(de)(de)(de)負(fu)荷化(hua)。
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