北海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)(gong)(gong)中心是(shi)高度(du)機(ji)電(dian)一體(ti)化的(de)產品，工(gong)(gong)(gong)件裝(zhuang)夾后，數控(kong)(kong)系統能控(kong)(kong)制(zhi)機(ji)床(chuang)按不同工(gong)(gong)(gong)序自(zi)動選(xuan)擇、更換刀具(ju)、自(zi)動對刀、自(zi)動改(gai)變主軸轉(zhuan)速(su)、進給量等，可連續完(wan)成鉆、鏜(tang)、銑、鉸(jiao)、攻絲(si)等多(duo)種(zhong)(zhong)工(gong)(gong)(gong)序，因而大大減少了工(gong)(gong)(gong)件裝(zhuang)夾時間(jian)(jian)、測量和機(ji)床(chuang)調整等輔助(zhu)工(gong)(gong)(gong)序時間(jian)(jian)，對加工(gong)(gong)(gong)形(xing)狀比較復雜，精度(du)要求較高，品種(zhong)(zhong)更換頻繁的(de)零件具(ju)有良好的(de)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)機床遂向“工(gong)序集中(zhong)”，即一臺數(shu)控(kong)(kong)機床在一次裝夾零件后(hou)能完成多工(gong)序加工(gong)的數(shu)控(kong)(kong)機床(即加工(gong)中(zhong)心(xin))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(shou)件(批(pi))試切完后，程序(xu)和相關生(sheng)產(chan)信息可(ke)保留下(xia)來(lai)，下(xia)次產(chan)品再生(sheng)產(chan)時，只要(yao)很(hen)少的(de)準(zhun)(zhun)備(bei)時間就可(ke)以(yi)開始生(sheng)產(chan)。CNC加工(gong)(gong)(gong)中心(xin)工(gong)(gong)(gong)時包括(kuo)準(zhun)(zhun)備(bei)工(gong)(gong)(gong)時和加工(gong)(gong)(gong)工(gong)(gong)(gong)時，CNC加工(gong)(gong)(gong)中心(xin)把很(hen)長的(de)單件準(zhun)(zhun)備(bei)工(gong)(gong)(gong)時平均分配到每一個(ge)工(gong)(gong)(gong)件上，使每次生(sheng)產(chan)的(de)平均實(shi)際(ji)工(gong)(gong)(gong)時減少，生(sheng)產(chan)周期大(da)大(da)縮短。

        （2）高精度(du)工(gong)(gong)(gong)(gong)(gong)件:有(you)些工(gong)(gong)(gong)(gong)(gong)件需求(qiu)甚少，但屬關鍵(jian)部件，要求(qiu)精度(du)高且工(gong)(gong)(gong)(gong)(gong)期(qi)短，用傳統(tong)工(gong)(gong)(gong)(gong)(gong)藝需用多臺機床協調工(gong)(gong)(gong)(gong)(gong)作，其周期(qi)長、效(xiao)率低，在長工(gong)(gong)(gong)(gong)(gong)序(xu)流程中，受人為(wei)影響(xiang)容(rong)易(yi)出廢(fei)品，從(cong)而造成重(zhong)大經濟(ji)損(sun)失。而采用CNC加工(gong)(gong)(gong)(gong)(gong)中心進行(xing)加工(gong)(gong)(gong)(gong)(gong),生產完全(quan)由程序(xu)自動控制.避免了(le)長工(gong)(gong)(gong)(gong)(gong)序(xu)流程,減少了(le)硬件投資及(ji)人為(wei)干(gan)擾，具有(you)生產效(xiao)益高及(ji)質量穩定(ding)的(de)特(te)點。

        （3）批量(liang)(liang)(liang)生(sheng)(sheng)產(chan)(chan)的工(gong)(gong)件:CNC加(jia)工(gong)(gong)中(zhong)心(xin)(xin)生(sheng)(sheng)產(chan)(chan)的柔性(xing)不僅(jin)體現(xian)在(zai)對特殊(shu)要求的快(kuai)速反應(ying)上，而且(qie)可以快(kuai)速實(shi)現(xian)批量(liang)(liang)(liang)生(sheng)(sheng)產(chan)(chan)，以提高市場競(jing)爭(zheng)能力。CNC加(jia)工(gong)(gong)中(zhong)心(xin)(xin)適合于中(zhong)小批量(liang)(liang)(liang)生(sheng)(sheng)產(chan)(chan)，特別是(shi)小批量(liang)(liang)(liang)生(sheng)(sheng)產(chan)(chan)，在(zai)應(ying)用CNC加(jia)工(gong)(gong)中(zhong)心(xin)(xin)時。盡量(liang)(liang)(liang)使批量(liang)(liang)(liang)大于經(jing)(jing)濟批量(liang)(liang)(liang),以達到(dao)良好的經(jing)(jing)濟效果。隨著CNC加(jia)工(gong)(gong)中(zhong)心(xin)(xin)的不斷發展，經(jing)(jing)濟批量(liang)(liang)(liang)越(yue)來越(yue)小，對一些復雜工(gong)(gong)件，5-10件就可以生(sheng)(sheng)產(chan)(chan)，甚至單件生(sheng)(sheng)產(chan)(chan)時也可以考(kao)慮用CNC加(jia)工(gong)(gong)中(zhong)心(xin)(xin)。