荊門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(chuang)。加工(gong)中心(xin)是高(gao)度機(ji)電一體化的產品，工(gong)件裝夾(jia)后，數控系統能控制(zhi)機(ji)床(chuang)按(an)不同(tong)工(gong)序(xu)(xu)自動選擇、更換刀具、自動對刀、自動改(gai)變主(zhu)軸轉速、進給量等(deng)，可連續完(wan)成鉆、鏜(tang)、銑(xian)、鉸(jiao)、攻絲等(deng)多種(zhong)工(gong)序(xu)(xu)，因而大大減少了工(gong)件裝夾(jia)時間、測量和機(ji)床(chuang)調整等(deng)輔助工(gong)序(xu)(xu)時間，對加工(gong)形狀比(bi)較復(fu)雜，精度要求較高(gao)，品種(zhong)更換頻繁的零件具有良好的經濟效果。

        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(chang)家為了進一步發揮這些優點，數(shu)控(kong)(kong)機床(chuang)遂向“工(gong)(gong)序集中(zhong)”，即一臺數(shu)控(kong)(kong)機床(chuang)在(zai)一次裝夾零件(jian)后能完成多工(gong)(gong)序加工(gong)(gong)的數(shu)控(kong)(kong)機床(chuang)(即加工(gong)(gong)中(zhong)心)方面發展。

        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，首件(jian)(批)試切完后，程(cheng)序和相關生產(chan)信息可保(bao)留下來(lai)，下次產(chan)品(pin)再生產(chan)時(shi)(shi)，只要很(hen)少的準(zhun)(zhun)備(bei)時(shi)(shi)間就可以開始生產(chan)。CNC加工(gong)(gong)中心工(gong)(gong)時(shi)(shi)包括準(zhun)(zhun)備(bei)工(gong)(gong)時(shi)(shi)和加工(gong)(gong)工(gong)(gong)時(shi)(shi)，CNC加工(gong)(gong)中心把很(hen)長的單(dan)件(jian)準(zhun)(zhun)備(bei)工(gong)(gong)時(shi)(shi)平(ping)均分配到(dao)每一(yi)個工(gong)(gong)件(jian)上，使每次生產(chan)的平(ping)均實際工(gong)(gong)時(shi)(shi)減少，生產(chan)周(zhou)期大大縮短。

        （2）高精度工(gong)(gong)(gong)(gong)(gong)件(jian):有(you)(you)些工(gong)(gong)(gong)(gong)(gong)件(jian)需求(qiu)甚少，但屬(shu)關鍵部(bu)件(jian)，要求(qiu)精度高且工(gong)(gong)(gong)(gong)(gong)期(qi)短，用(yong)(yong)傳(chuan)統工(gong)(gong)(gong)(gong)(gong)藝需用(yong)(yong)多臺機床協(xie)調工(gong)(gong)(gong)(gong)(gong)作，其(qi)周期(qi)長、效率低(di)，在長工(gong)(gong)(gong)(gong)(gong)序(xu)流程(cheng)(cheng)中(zhong)，受人為(wei)(wei)影響容易出廢(fei)品，從而(er)造成重大經濟損失(shi)。而(er)采用(yong)(yong)CNC加(jia)工(gong)(gong)(gong)(gong)(gong)中(zhong)心(xin)進行(xing)加(jia)工(gong)(gong)(gong)(gong)(gong),生產(chan)完全由程(cheng)(cheng)序(xu)自動(dong)控制.避免(mian)了長工(gong)(gong)(gong)(gong)(gong)序(xu)流程(cheng)(cheng),減少了硬件(jian)投資及(ji)人為(wei)(wei)干擾，具(ju)有(you)(you)生產(chan)效益高及(ji)質量穩定的特點(dian)。

        （3）批(pi)量生(sheng)(sheng)產的(de)工件(jian)(jian):CNC加(jia)(jia)(jia)工中(zhong)(zhong)心(xin)生(sheng)(sheng)產的(de)柔性不(bu)僅(jin)體現(xian)在對(dui)特殊要求的(de)快速反應上，而且可(ke)(ke)以快速實現(xian)批(pi)量生(sheng)(sheng)產，以提高市場(chang)競爭能力。CNC加(jia)(jia)(jia)工中(zhong)(zhong)心(xin)適合于(yu)中(zhong)(zhong)小(xiao)批(pi)量生(sheng)(sheng)產，特別是小(xiao)批(pi)量生(sheng)(sheng)產，在應用CNC加(jia)(jia)(jia)工中(zhong)(zhong)心(xin)時。盡量使批(pi)量大于(yu)經(jing)(jing)濟批(pi)量,以達到(dao)良好的(de)經(jing)(jing)濟效果(guo)。隨著CNC加(jia)(jia)(jia)工中(zhong)(zhong)心(xin)的(de)不(bu)斷發展，經(jing)(jing)濟批(pi)量越來越小(xiao)，對(dui)一些復雜工件(jian)(jian)，5-10件(jian)(jian)就可(ke)(ke)以生(sheng)(sheng)產，甚至單件(jian)(jian)生(sheng)(sheng)產時也(ye)可(ke)(ke)以考慮用CNC加(jia)(jia)(jia)工中(zhong)(zhong)心(xin)。