搖臂鉆的控制要求和電氣拖動特點

　　搖臂鉆的控制要求(qiu)和電氣拖動特點

　?。粒畵u臂鉆運動部件較多,為了簡化傳動裝(zhuang)置,采用(yong)多臺(tai)電(dian)動機拖動。

　　例如Z3040型搖臂鉆床采用4臺電(dian)(dian)動(dong)機(ji)(ji)拖動(dong),他們分別是主軸電(dian)(dian)動(dong)機(ji)(ji),搖臂升(sheng)降電(dian)(dian)動(dong)機(ji)(ji),液(ye)壓泵(beng)電(dian)(dian)動(dong)機(ji)(ji)和冷卻泵(beng)電(dian)(dian)動(dong)機(ji)(ji),這些電(dian)(dian)動(dong)機(ji)(ji)都采用直(zhi)接啟動(dong)方式。

　?。拢疄榱诉m應多種形(xing)式的加工要求,搖臂鉆(zhan)主軸的旋轉及進給運動有較大的調(diao)速范圍,一般情況下多由機械變速機構實現(xiàn)。

　　主軸(zhou)變(bian)速(su)機構(gou)與(yu)進給變(bian)速(su)機構(gou)均(jun)裝在主軸(zhou)箱內(nei)。

　?。茫畵u(yao)臂鉆的主(zhu)運動(dong)(dong)(dong)和進給(gei)運動(dong)(dong)(dong)均為(wei)主(zhu)軸(zhou)的運動(dong)(dong)(dong),為(wei)此(ci)這(zhe)兩項運動(dong)(dong)(dong)有一臺主(zhu)軸(zhou)電動(dong)(dong)(dong)機拖動(dong)(dong)(dong),分(fen)別經主(zhu)軸(zhou)傳動(dong)(dong)(dong)機構,進給(gei)傳動(dong)(dong)(dong)機構實現(xiàn)主(zhu)軸(zhou)的旋轉和進給(gei)。

　?。模诩庸?gong)螺紋時(shi),要求(qiu)主軸能正反轉。

　　搖臂鉆主軸正反轉一般采用機(ji)械(xie)方法實現(xiàn)。因此主軸電(dian)動(dong)機(ji)僅(jin)需要單向旋轉。

　?。牛畵u臂升降電(dian)動機(ji)要求能正反(fan)向旋轉。

　?。疲畠韧庵鬏S的夾緊(jin)與(yu)放松(song)、主軸與(yu)搖(yao)臂的夾緊(jin)與(yu)放松(song)可用(yong)(yong)機(ji)械(xie)(xie)操作、電(dian)氣(qi)—機(ji)械(xie)(xie)裝置,電(dian)氣(qi)—液(ye)(ye)壓(ya)(ya)(ya)或電(dian)氣(qi)—液(ye)(ye)壓(ya)(ya)(ya)—機(ji)械(xie)(xie)等控(kong)制(zhi)方(fang)法實現(xiàn)(xian)。若(ruo)采(cai)用(yong)(yong)液(ye)(ye)壓(ya)(ya)(ya)裝置,則備有液(ye)(ye)壓(ya)(ya)(ya)泵電(dian)機(ji),拖動(dong)液(ye)(ye)壓(ya)(ya)(ya)泵提供壓(ya)(ya)(ya)力油來實現(xiàn)(xian),液(ye)(ye)壓(ya)(ya)(ya)泵電(dian)機(ji)要(yao)求能正反向旋轉,并根據要(yao)求采(cai)用(yong)(yong)點動(dong)控(kong)制(zhi)。

　　Ｈ．搖(yao)臂(bei)(bei)(bei)的移動嚴格按照搖(yao)臂(bei)(bei)(bei)松(song)開→移動→搖(yao)臂(bei)(bei)(bei)夾緊(jin)的程(cheng)序(xu)進行。因此(ci)搖(yao)臂(bei)(bei)(bei)的夾緊(jin)與搖(yao)臂(bei)(bei)(bei)升降按自動控制(zhi)進行。

　?。桑?leng)(leng)卻泵(beng)(beng)電(dian)動機帶動冷(leng)(leng)卻泵(beng)(beng)提(ti)供冷(leng)(leng)卻液(ye),只(zhi)要求單(dan)向(xiang)旋轉。

　?。剩?ju)有連鎖與(yu)保(bao)護環(huán)節(jié)以及(ji)安全照明、信號指示電路。