主軸(zhou)(zhou)(zhou)箱(xiang)部(bu)件是(shi)機(ji)床的(de)(de)(de)重要(yao)部(bu)件之(zhi)一。主軸(zhou)(zhou)(zhou)部(bu)件和支(zhi)承(cheng)(cheng)件均采用(yong)(yong)了(le)剛度和抗(kang)(kang)振(zhen)性(xing)較好的(de)(de)(de)新型結(jie)構(gou)(gou)。主軸(zhou)(zhou)(zhou)的(de)(de)(de)加(jia)工(gong)(gong)精(jing)度、抗(kang)(kang)振(zhen)性(xing)能以及(ji)熱變形(xing)等對活(huo)塞的(de)(de)(de)加(jia)工(gong)(gong)質量(liang)有直接(jie)(jie)的(de)(de)(de)影(ying)響。因為采用(yong)(yong)了(le)變頻調(diao)(diao)速電動機(ji)，數(shu)控(kong)機(ji)床的(de)(de)(de)主軸(zhou)(zhou)(zhou)箱(xiang)結(jie)構(gou)(gou)比較簡單。主要(yao)是(shi)前后軸(zhou)(zhou)(zhou)承(cheng)(cheng)支(zhi)撐主軸(zhou)(zhou)(zhou)，由電動機(ji)靠皮(pi)帶(dai)傳送動力直接(jie)(jie)帶(dai)動旋轉，主軸(zhou)(zhou)(zhou)前端一般(ban)采用(yong)(yong)雙列(lie)圓柱(zhu)滾(gun)子(zi)軸(zhou)(zhou)(zhou)承(cheng)(cheng)2和角接(jie)(jie)觸(chu)球軸(zhou)(zhou)(zhou)承(cheng)(cheng)組合3，后支(zhi)承(cheng)(cheng)采用(yong)(yong)雙列(lie)圓柱(zhu)滾(gun)子(zi)軸(zhou)(zhou)(zhou)承(cheng)(cheng)。前后軸(zhou)(zhou)(zhou)承(cheng)(cheng)利用(yong)(yong)鎖(suo)緊螺(luo)母4與軸(zhou)(zhou)(zhou)承(cheng)(cheng)間隙調(diao)(diao)整墊1消(xiao)除調(diao)(diao)整軸(zhou)(zhou)(zhou)向(xiang)和徑向(xiang)間隙。這種結(jie)構(gou)(gou)能夠具有強有力的(de)(de)(de)切削性(xing)能，并且加(jia)工(gong)(gong)精(jing)度也能滿足活(huo)塞加(jia)工(gong)(gong)的(de)(de)(de)要(yao)求，海南高速精(jing)密精(jing)雕(diao)，是(shi)目前我公司制造(zao)的(de)(de)(de)大多數(shu)控(kong)機(ji)床采用(yong)(yong)的(de)(de)(de)結(jie)構(gou)(gou)形(xing)式。

中國(guo)是制(zhi)造(zao)大國(guo)，國(guo)內(nei)數(shu)控車床市場很大。國(guo)內(nei)的數(shu)控車床生(sheng)(sheng)產(chan)商(shang)也都各(ge)有特點(dian)(dian)，競(jing)爭市場。這就形成了(le)兩種(zhong)大概類型(xing)，一(yi)種(zhong)是大型(xing)生(sheng)(sheng)產(chan)商(shang)，高速精密(mi)精雕(diao)加工，特點(dian)(dian)是質量好，高速精密(mi)精雕(diao)價格，價格貴(gui)；一(yi)種(zhong)是小型(xing)生(sheng)(sheng)產(chan)商(shang)，特點(dian)(dian)是物美i價廉(lian)。隨著中國(guo)的研(yan)發制(zhi)造(zao)能力的不斷(duan)提高，中國(guo)漸漸地從進口數(shu)控車床到(dao)出口，表明我國(guo)的數(shu)控業發展的強勁勢頭。

進入21世紀以來(lai)，隨著數控技術的不斷發展(zhan)和(he)應用(yong)(yong)領域的擴大，高速精(jing)密精(jing)雕廠(chang)家，它對國計民生的一些(xie)重(zhong)要(yao)行業(IT、汽車、輕(qing)工等)的發展(zhan)起著越(yue)來(lai)越(yue)重(zhong)要(yao)的作用(yong)(yong)。

加(jia)(jia)(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)中心(xin)(xin)通常(chang)以主(zhu)軸(zhou)(zhou)與工(gong)(gong)(gong)作(zuo)(zuo)臺相對位置(zhi)(zhi)分類，分為臥式(shi)(shi)、立(li)式(shi)(shi)和萬(wan)i能加(jia)(jia)(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)中心(xin)(xin)。1）臥式(shi)(shi)加(jia)(jia)(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)中心(xin)(xin)：是(shi)指主(zhu)軸(zhou)(zhou)軸(zhou)(zhou)線(xian)(xian)與工(gong)(gong)(gong)作(zuo)(zuo)臺平(ping)行設置(zhi)(zhi)的加(jia)(jia)(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)中心(xin)(xin)，主(zhu)要(yao)適用于(yu)加(jia)(jia)(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)箱體類零件。2）立(li)式(shi)(shi)加(jia)(jia)(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)中心(xin)(xin)：是(shi)指主(zhu)軸(zhou)(zhou)軸(zhou)(zhou)線(xian)(xian)與工(gong)(gong)(gong)作(zuo)(zuo)臺垂直設置(zhi)(zhi)的加(jia)(jia)(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)中心(xin)(xin)，主(zhu)要(yao)適用于(yu)加(jia)(jia)(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)板類、盤類、模具及小(xiao)型殼體類復雜(za)零件。3）萬(wan)i能加(jia)(jia)(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)中心(xin)(xin)(又稱(cheng)多軸(zhou)(zhou)聯(lian)動型加(jia)(jia)(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)中心(xin)(xin))：是(shi)指通過加(jia)(jia)(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)主(zhu)軸(zhou)(zhou)軸(zhou)(zhou)線(xian)(xian)與工(gong)(gong)(gong)作(zuo)(zuo)臺回(hui)轉軸(zhou)(zhou)線(xian)(xian)的角度可控制(zhi)聯(lian)動變化，完成復雜(za)空(kong)間(jian)(jian)曲(qu)面(mian)加(jia)(jia)(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)的加(jia)(jia)(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)中心(xin)(xin)。適用于(yu)具有(you)復雜(za)空(kong)間(jian)(jian)曲(qu)面(mian)的葉輪轉子、模具、刃具等工(gong)(gong)(gong)件的加(jia)(jia)(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)。