中走絲線(xian)切割驅(qu)動(dong)單(dan)(dan)元(yuan)(yuan)包括驅(qu)動(dong)裝置和(he)電(dian)(dian)機兩(liang)部分，因(yin)此對(dui)驅(qu)動(dong)單(dan)(dan)元(yuan)(yuan)的(de)選(xuan)購主要在于(yu)(yu)驅(qu)動(dong)裝置的(de)選(xuan)擇，因(yin)為電(dian)(dian)機是通(tong)用的(de)部件，性(xing)能(neng)差別只存在于(yu)(yu)不同的(de)廠家和(he)不同的(de)型號。

　　目前常用的伺(si)服(fu)電(dian)(dian)(dian)(dian)機是交流(liu)伺(si)服(fu)電(dian)(dian)(dian)(dian)機，在(zai)電(dian)(dian)(dian)(dian)機的軸端裝有光(guang)電(dian)(dian)(dian)(dian)編碼(ma)器，通過(guo)檢測(ce)轉(zhuan)(zhuan)子角(jiao)度用以變(bian)頻控(kong)制。從低(di)轉(zhuan)(zhuan)速(su)到(dao)搞轉(zhuan)(zhuan)速(su)，伺(si)服(fu)電(dian)(dian)(dian)(dian)機都(dou)能(neng)平(ping)滑(hua)運轉(zhuan)(zhuan)，轉(zhuan)(zhuan)矩波動(dong)小。伺(si)服(fu)電(dian)(dian)(dian)(dian)機有較(jiao)長(chang)的過(guo)載能(neng)力(li)，有較(jiao)小的轉(zhuan)(zhuan)動(dong)慣量和大的堵轉(zhuan)(zhuan)轉(zhuan)(zhuan)矩。伺(si)服(fu)電(dian)(dian)(dian)(dian)機有很(hen)小的啟動(dong)頻率，能(neng)很(hen)快從低(di)轉(zhuan)(zhuan)速(su)加(jia)速(su)到(dao)額定轉(zhuan)(zhuan)速(su)。

　　驅(qu)動電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)主要可(ke)分為(wei)(wei)：反(fan)應(ying)式(shi)步(bu)(bu)(bu)進(jin)(jin)(jin)驅(qu)動電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)、混(hun)合(he)式(shi)（也稱永磁(ci)(ci)(ci)反(fan)應(ying)式(shi)）步(bu)(bu)(bu)進(jin)(jin)(jin)驅(qu)動電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)和(he)伺(si)服驅(qu)動電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)三大類。反(fan)應(ying)式(shi)步(bu)(bu)(bu)進(jin)(jin)(jin)驅(qu)動電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)的(de)(de)(de)(de)轉子(zi)無繞組，由被勵(li)磁(ci)(ci)(ci)的(de)(de)(de)(de)定子(zi)繞組產生(sheng)反(fan)應(ying)力矩實(shi)現步(bu)(bu)(bu)進(jin)(jin)(jin)運(yun)行。混(hun)合(he)式(shi)步(bu)(bu)(bu)進(jin)(jin)(jin)電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)的(de)(de)(de)(de)轉子(zi)用磁(ci)(ci)(ci)鋼，由勵(li)磁(ci)(ci)(ci)和(he)永磁(ci)(ci)(ci)產生(sheng)的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)力矩實(shi)現步(bu)(bu)(bu)進(jin)(jin)(jin)運(yun)行。步(bu)(bu)(bu)進(jin)(jin)(jin)電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)受(shou)脈(mo)沖的(de)(de)(de)(de)控(kong)制(zhi)，通(tong)過改(gai)變通(tong)電(dian)(dian)(dian)(dian)(dian)的(de)(de)(de)(de)順序可(ke)改(gai)變電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)的(de)(de)(de)(de)旋轉方向，改(gai)變脈(mo)沖的(de)(de)(de)(de)頻率可(ke)改(gai)變電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)的(de)(de)(de)(de)旋轉速度(du)。步(bu)(bu)(bu)進(jin)(jin)(jin)電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)有一定的(de)(de)(de)(de)步(bu)(bu)(bu)距精度(du)，沒有累積誤(wu)差。但(dan)(dan)步(bu)(bu)(bu)進(jin)(jin)(jin)電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)的(de)(de)(de)(de)效率低(di)，拖(tuo)動負載(zai)的(de)(de)(de)(de)能力不(bu)(bu)大，脈(mo)沖當(dang)量不(bu)(bu)能太大，調速范圍不(bu)(bu)大。目前步(bu)(bu)(bu)進(jin)(jin)(jin)電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)可(ke)分為(wei)(wei)兩相、三相、五相等幾種，通(tong)常用的(de)(de)(de)(de)是五相步(bu)(bu)(bu)進(jin)(jin)(jin)電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)。在過去的(de)(de)(de)(de)一段(duan)時間里，步(bu)(bu)(bu)進(jin)(jin)(jin)電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)占(zhan)很大的(de)(de)(de)(de)市(shi)場，但(dan)(dan)目前正逐(zhu)步(bu)(bu)(bu)為(wei)(wei)伺(si)服電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)所取代。

　　下面我(wo)們介(jie)紹下中(zhong)走絲(si)線切(qie)割(ge)機床使用注意事項：

　　1、中走絲(si)線(xian)切(qie)割機(ji)床在運(yun)絲(si)和加工(gong)(gong)過程中不能打開運(yun)線(xian)總成及工(gong)(gong)作臺等安全(quan)防護裝置，同時在相應的(de)防護上標有警示標志以(yi)提使用時注意安全(quan)；

　　2、中(zhong)走絲線切割機床(chuang)在運(yun)轉過程中(zhong)身(shen)體嚴(yan)禁越(yue)過安全防護裝(zhuang)置；

　　3、機床在運轉過程中身體嚴禁接觸電極絲(si)以免發生意外；

　　4、機床運轉(zhuan)過(guo)程中(zhong)及(ji)電器柜通電的情(qing)況下嚴禁打開電器門以免發(fa)生意外(wai)電擊(ji)；

　　5、在加工過程中不(bu)能長時間(jian)斷(duan)開冷卻液(ye)以免影(ying)響加工速度和加工精度，同時損壞電極絲(si)；

　　6、機床電器裝有蘑菇急停開關(guan)，遇到緊急情況可按急停開關(guan)機；

　　7、中(zhong)走絲機床電器應(ying)防止雷(lei)擊，應(ying)安裝避雷(lei)裝置；

　　8、機(ji)床防護罩與機(ji)床啟動無(wu)互鎖(suo)關系，請在加工(gong)時注意使用防護罩；

　　9、在維護(hu)過(guo)程中必(bi)須切斷電源；

　　10、裝夾和(he)卸下過程中(zhong)應佩戴好防(fang)護(hu)工具，防(fang)止砸傷手(shou)腳；

　　11、清洗工件必(bi)須(xu)在(zai)指定(ding)位(wei)置，佩戴(dai)護目鏡，口罩，防滑鞋等防護工具；

　　12、中走(zou)絲機床發(fa)生異常(chang)時，如異響、冒煙、震動(dong)、臭(chou)味等，應立即(ji)關閉機床，請有關人員(yuan)檢查處理(li)。