西雙版納JT50A

  加工中心簡稱CNC，是由機械設備與數控系統組成的使用于加工復雜形狀工件的高效率自動化機床。加工中心又被稱電腦鑼。加工中心備有刀庫，具有自動換刀功能，是對工件一次裝夾后進行多工序加工的數控機床。加(jia)工(gong)(gong)(gong)中心(xin)是高度(du)機(ji)電一(yi)體化的產品，工(gong)(gong)(gong)件裝夾(jia)后，數控系(xi)統能(neng)控制機(ji)床按不同工(gong)(gong)(gong)序自(zi)動選擇(ze)、更(geng)(geng)換刀(dao)具(ju)、自(zi)動對刀(dao)、自(zi)動改變(bian)主軸轉速、進給量(liang)等(deng)，可連(lian)續完成鉆、鏜、銑、鉸、攻(gong)絲(si)等(deng)多種(zhong)工(gong)(gong)(gong)序，因(yin)而大大減少了工(gong)(gong)(gong)件裝夾(jia)時(shi)間、測量(liang)和機(ji)床調整(zheng)等(deng)輔助工(gong)(gong)(gong)序時(shi)間，對加(jia)工(gong)(gong)(gong)形狀(zhuang)比(bi)較復雜(za)，精度(du)要求較高，品種(zhong)更(geng)(geng)換頻(pin)繁的零件具(ju)有良(liang)好的經濟效果(guo)。

        數控機床實現了中、小批量加工自動化，改善了勞動條件。此外，它還具有生產率高、加工精度穩定、產品成本低等一系列優點。CNC零件加工中心廠家為(wei)了(le)進一(yi)步發揮這(zhe)些優點，數(shu)控機(ji)床遂(sui)向“工(gong)序集中”，即(ji)一(yi)臺數(shu)控機(ji)床在一(yi)次裝夾零件后(hou)能完(wan)成多工(gong)序加(jia)工(gong)的數(shu)控機(ji)床(即(ji)加(jia)工(gong)中心)方面(mian)發展(zhan)。

        CNC立式加工中心的用途:

        （1）期性重復投產的工件:有些產品的市場需求具有周期性和季節性，如果采用專門生產線則得不償失，用普通設備加工效率又太低，且質量不穩定，數量也難以。而采用CNC加工中心，首(shou)件(批)試切完后，程序(xu)和相關(guan)生(sheng)(sheng)產(chan)(chan)信(xin)息可(ke)保留下(xia)來，下(xia)次(ci)產(chan)(chan)品(pin)再(zai)生(sheng)(sheng)產(chan)(chan)時(shi)(shi)，只(zhi)要很少的(de)準(zhun)備(bei)時(shi)(shi)間就可(ke)以開始生(sheng)(sheng)產(chan)(chan)。CNC加工中(zhong)心工時(shi)(shi)包括(kuo)準(zhun)備(bei)工時(shi)(shi)和加工工時(shi)(shi)，CNC加工中(zhong)心把很長的(de)單件準(zhun)備(bei)工時(shi)(shi)平均分(fen)配到每(mei)一個工件上，使每(mei)次(ci)生(sheng)(sheng)產(chan)(chan)的(de)平均實際工時(shi)(shi)減(jian)少，生(sheng)(sheng)產(chan)(chan)周(zhou)期大(da)大(da)縮短。

        （2）高精(jing)度工(gong)(gong)(gong)(gong)(gong)件(jian):有些(xie)工(gong)(gong)(gong)(gong)(gong)件(jian)需求甚少，但屬關鍵部件(jian)，要求精(jing)度高且工(gong)(gong)(gong)(gong)(gong)期短，用傳統工(gong)(gong)(gong)(gong)(gong)藝(yi)需用多(duo)臺機床(chuang)協調工(gong)(gong)(gong)(gong)(gong)作，其周期長、效率低，在長工(gong)(gong)(gong)(gong)(gong)序(xu)流(liu)程中(zhong)，受人為影響容易出(chu)廢品，從而造成(cheng)重大經濟(ji)損失。而采用CNC加工(gong)(gong)(gong)(gong)(gong)中(zhong)心(xin)進行加工(gong)(gong)(gong)(gong)(gong),生產(chan)完全由程序(xu)自動控(kong)制.避免了長工(gong)(gong)(gong)(gong)(gong)序(xu)流(liu)程,減少了硬(ying)件(jian)投資及(ji)人為干擾，具有生產(chan)效益高及(ji)質量穩(wen)定的(de)特點。

        （3）批(pi)(pi)量(liang)生產(chan)的工(gong)件(jian):CNC加(jia)工(gong)中(zhong)(zhong)心生產(chan)的柔性不僅體現在對特殊(shu)要求(qiu)的快速(su)反應上，而且可(ke)以快速(su)實現批(pi)(pi)量(liang)生產(chan)，以提(ti)高市場競爭(zheng)能力。CNC加(jia)工(gong)中(zhong)(zhong)心適合(he)于中(zhong)(zhong)小批(pi)(pi)量(liang)生產(chan)，特別是(shi)小批(pi)(pi)量(liang)生產(chan)，在應用CNC加(jia)工(gong)中(zhong)(zhong)心時。盡(jin)量(liang)使批(pi)(pi)量(liang)大于經濟批(pi)(pi)量(liang),以達到良好的經濟效果。隨著CNC加(jia)工(gong)中(zhong)(zhong)心的不斷發展(zhan)，經濟批(pi)(pi)量(liang)越(yue)來越(yue)小，對一些復雜工(gong)件(jian)，5-10件(jian)就可(ke)以生產(chan)，甚(shen)至單(dan)件(jian)生產(chan)時也可(ke)以考慮用CNC加(jia)工(gong)中(zhong)(zhong)心。