最簡(jian)單的(de)答案(an)是因為生(sheng)產(chan)力(li)和利潤。雙(shuang)(shuang)主軸(zhou)(zhou)加(jia)(jia)(jia)工(gong)(gong)(gong)中心(xin)可以(yi)輕(qing)松(song)完成(cheng)同類單主軸(zhou)(zhou)加(jia)(jia)(jia)工(gong)(gong)(gong)中心(xin)的(de)二倍工(gong)(gong)(gong)作(zuo)量。假定保持機器(qi)忙碌的(de)工(gong)(gong)(gong)作(zuo)負載(zai)是可用(yong)的(de)。毫無(wu)疑問，制造商可以(yi)使用(yong) 雙(shuang)(shuang)主軸(zhou)(zhou)加(jia)(jia)(jia)工(gong)(gong)(gong)中心(xin) 在更(geng)短的(de)時間內完成(cheng)更(geng)多零(ling)件加(jia)(jia)(jia)工(gong)(gong)(gong)。隨著產(chan)量的(de)增加(jia)(jia)(jia)，車間的(de)吞吐量大大提高。同時加(jia)(jia)(jia)工(gong)(gong)(gong)兩(liang)個工(gong)(gong)(gong)件，只占用(yong)一臺(tai)機器(qi)的(de)場(chang)地和一名cnc操作(zuo)員，變(bian)相的(de)增加(jia)(jia)(jia)了廠房機器(qi)數量減少了人(ren)工(gong)(gong)(gong)成(cheng)本并且提高效率。

　　在(zai)手機通訊、電(dian)子3C、新能源電(dian)池正負極(ji)等行(xing)業(ye)中(zhong)(zhong)，一名cnc操(cao)作員可以完成(cheng)多(duo)名cnc操(cao)作員的(de)工作，從(cong)而降低(di)了勞動力成(cheng)本(ben)。雖然一臺雙主(zhu)軸加工中(zhong)(zhong)心(xin)比普(pu)(pu)通的(de)機床的(de)費用高(gao)很多(duo)，但(dan)是一臺雙主(zhu)軸加工中(zhong)(zhong)心(xin)的(de)高(gao)產量、高(gao)效(xiao)率(lv)、低(di)勞動成(cheng)本(ben)是遠遠優于普(pu)(pu)通單主(zhu)軸加工中(zhong)(zhong)心(xin)的(de)。