為適應全球制造行(xing)(xing)(xing)業的(de)需求，數(shu)控(kong)系(xi)統(tong)(tong)(tong)網(wang)(wang)絡(luo)化(hua)(hua)是(shi)必然發展方(fang)向。網(wang)(wang)絡(luo)可以把世界(jie)上的(de)資源進行(xing)(xing)(xing)最優配(pei)置(zhi)，數(shu)控(kong)系(xi)統(tong)(tong)(tong)的(de)網(wang)(wang)絡(luo)化(hua)(hua)最先是(shi)企業內(nei)部(bu)的(de)數(shu)控(kong)系(xi)統(tong)(tong)(tong)網(wang)(wang)絡(luo)化(hua)(hua)，數(shu)控(kong)之間通(tong)(tong)過企業內(nei)部(bu)局域(yu)網(wang)(wang)進行(xing)(xing)(xing)相(xiang)互通(tong)(tong)信(xin)，然后再經由因特網(wang)(wang)通(tong)(tong)向企業外部(bu)，這就是(shi)所謂的(de)Inter-net/Internet技(ji)術(shu)。這樣(yang)就把世界(jie)上幾乎(hu)所有(you)的(de)數(shu)控(kong)系(xi)統(tong)(tong)(tong)聯(lian)系(xi)起(qi)來，促成(cheng)了世界(jie)資源的(de)優化(hua)(hua)配(pei)置(zhi)。
隨著加工(gong)效率的(de)(de)提高，人(ren)們對(dui)物質需求(qiu)(qiu)的(de)(de)大量增加，數(shu)控(kong)系(xi)(xi)統(tong)(tong)工(gong)作時(shi)(shi)間(jian)越來越長，這就(jiu)必(bi)然需要數(shu)控(kong)系(xi)(xi)統(tong)(tong)在(zai)長時(shi)(shi)間(jian)內能夠(gou)(gou)保證其穩(wen)定性(xing)，加工(gong)的(de)(de)產品才能合(he)格。這就(jiu)對(dui)數(shu)控(kong)系(xi)(xi)統(tong)(tong)提出了(le)高可靠(kao)性(xing)的(de)(de)要求(qiu)(qiu)，對(dui)于每(mei)天工(gong)作兩班(ban)的(de)(de)無(wu)人(ren)工(gong)廠而言，如(ru)果(guo)要求(qiu)(qiu)在(zai)16小時(shi)(shi)內連續正常(chang)工(gong)作、無(wu)故障率達99%以(yi)上，則數(shu)控(kong)車床的(de)(de)平(ping)均(jun)無(wu)故障運行時(shi)(shi)間(jian)就(jiu)必(bi)須(xu)大于3000小時(shi)(shi)。這就(jiu)要求(qiu)(qiu)數(shu)控(kong)配(pei)置、主軸及伺(si)服(fu)驅動等的(de)(de)平(ping)均(jun)無(wu)故障運行時(shi)(shi)間(jian)必(bi)須(xu)在(zai)10萬小時(shi)(shi)以(yi)上。日(ri)本FANUC系(xi)(xi)統(tong)(tong)早在(zai)20世紀(ji)80年代末就(jiu)能夠(gou)(gou)達到這種高可靠(kao)性(xing)的(de)(de)要求(qiu)(qiu)，現(xian)在(zai)正向更高可靠(kao)性(xing)方(fang)向發展。
在生產過程中(zhong)，往往發現(xian)這(zhe)樣(yang)的(de)(de)現(xian)象：一個零件(jian)本身被(bei)刀具加(jia)工的(de)(de)時(shi)(shi)間(jian)不長，而工人裝夾的(de)(de)時(shi)(shi)間(jian)有時(shi)(shi)候(hou)大于(yu)加(jia)工時(shi)(shi)間(jian)。這(zhe)種在零件(jian)加(jia)工過程中(zhong)大量的(de)(de)無功(gong)效(xiao)時(shi)(shi)間(jian)對于(yu)生產來說是不利(li)的(de)(de)，所以(yi)(yi)現(xian)代自動化高的(de)(de)工廠一般的(de)(de)數(shu)控(kong)車(che)床(chuang)配有工件(jian)搬運、自動上下料、自動換刀等系(xi)(xi)統，可(ke)以(yi)(yi)盡可(ke)能降低這(zhe)些(xie)無功(gong)效(xiao)時(shi)(shi)間(jian)。這(zhe)種能夠(gou)把多(duo)種不同功(gong)能的(de)(de)系(xi)(xi)統整合在一臺數(shu)控(kong)車(che)床(chuang)的(de)(de)過程就是數(shu)控(kong)系(xi)(xi)統的(de)(de)負荷(he)化。
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