一、立式加工中心分類有哪些
立式加工中心是指主軸軸線與工作臺垂直設置的加工中心,主(zhu)要適用于加工板類、盤(pan)類、模(mo)具及小(xiao)型殼體類復雜零(ling)件,它的類型眾多,按照不同的分(fen)(fen)類依據可分(fen)(fen)為不同類型:
1、按導軌分類
依(yi)據(ju)立式(shi)加工中(zhong)心各軸導(dao)軌(gui)的形式(shi)可分硬軌(gui)及線(xian)軌(gui)。硬軌(gui)適合重切削,線(xian)軌(gui)運(yun)動更(geng)靈敏。
2、按轉速分類
主軸轉速6000-15000rpm為低速型,18000rpm以(yi)上為高(gao)速型。
3、按結構分類
(1)定立(li)(li)(li)柱式(shi)立(li)(li)(li)式(shi)加(jia)工中(zhong)心(xin)(xin):即工作(zuo)臺運(yun)動,立(li)(li)(li)柱固定型(xing)結(jie)構,又稱工作(zuo)臺運(yun)動式(shi)立(li)(li)(li)式(shi)加(jia)工中(zhong)心(xin)(xin),屬于(yu)傳統的(de)普及型(xing)立(li)(li)(li)式(shi)加(jia)工中(zhong)心(xin)(xin),這種立(li)(li)(li)式(shi)加(jia)工中(zhong)心(xin)(xin)成本低,設計、制造比較容易,可實現批(pi)量化生產,性能方面(mian),機床的(de)立(li)(li)(li)柱部件(jian)、主軸箱部件(jian)剛性好,在切(qie)削過程中(zhong),主軸箱部件(jian)振動小。
(2)動柱(zhu)式(shi)立(li)式(shi)加工(gong)(gong)(gong)(gong)(gong)中心(xin):即工(gong)(gong)(gong)(gong)(gong)作(zuo)(zuo)臺固(gu)(gu)定(ding),立(li)柱(zhu)運動型結構,又名固(gu)(gu)定(ding)工(gong)(gong)(gong)(gong)(gong)作(zuo)(zuo)臺式(shi)立(li)式(shi)加工(gong)(gong)(gong)(gong)(gong)中心(xin),這類加工(gong)(gong)(gong)(gong)(gong)中心(xin)由于(yu)工(gong)(gong)(gong)(gong)(gong)作(zuo)(zuo)臺不移(yi)動,可以放(fang)置更(geng)大(da)的工(gong)(gong)(gong)(gong)(gong)件(jian)和異形工(gong)(gong)(gong)(gong)(gong)件(jian),可以加工(gong)(gong)(gong)(gong)(gong)重量很(hen)大(da)的工(gong)(gong)(gong)(gong)(gong)件(jian);另外,固(gu)(gu)定(ding)的工(gong)(gong)(gong)(gong)(gong)作(zuo)(zuo)臺使得操作(zuo)(zuo)者更(geng)容易靠近(jin),裝卸(xie)工(gong)(gong)(gong)(gong)(gong)件(jian)的操作(zuo)(zuo)更(geng)加容易和省力,操作(zuo)(zuo)更(geng)方便。
(3)小型龍門式(shi)立(li)式(shi)加(jia)(jia)(jia)工(gong)中心:這類加(jia)(jia)(jia)工(gong)中心剛性好,精度高,主軸箱(xiang)部件不(bu)懸伸,加(jia)(jia)(jia)工(gong)時不(bu)承受彎矩(ju)造成(cheng)的變形,其框(kuang)中框(kuang)結構(gou)可以(yi)做到高速(su)加(jia)(jia)(jia)工(gong),高速(su)定位(wei)。
二、立式加工中心的特點
1、工(gong)(gong)件(jian)易裝(zhuang)夾(jia)(jia),可用(yong)通用(yong)的(de)夾(jia)(jia)具(ju)如平口鉗,壓板,分度頭,回轉工(gong)(gong)作臺等(deng)裝(zhuang)夾(jia)(jia)工(gong)(gong)件(jian),工(gong)(gong)件(jian)的(de)裝(zhuang)夾(jia)(jia)定(ding)位方便。
2、刀具動(dong)運轉跡(ji)易觀察(cha),調試(shi)程序檢查測量方便,可(ke)及時發現問題,進(jin)行停機處理或(huo)修改。
3、冷(leng)卻條件易建立,切削液(ye)能直接到達(da)刀具和(he)加工表面。
4、坐標系即(ji)XYZ三個坐標軸與(yu)笛卡兒坐標系吻臺,感覺直觀,與(yu)圖樣視角一致。
5、切屑易排除和掉落(luo),避免(mian)切屑切劃加工過(guo)的表面。
6、結構一般采用單柱式,它與相應的臥式加工中心相比,結(jie)構(gou)簡單,占地面(mian)積較小(xiao),價格較低。
7、立式加(jia)工(gong)中(zhong)心加(jia)工(gong)Z軸方向尺寸相對較小的(de)工(gong)件時,一般(ban)的(de)情況下除底面(mian)不(bu)能加(jia)工(gong)外,其余(yu)五(wu)個(ge)面(mian)都可用不(bu)同的(de)刀(dao)具進行(xing)輪廓(kuo)和(he)表(biao)面(mian)加(jia)工(gong)。