6SE7022-1EP50
TFM160N全閉環(huán)法國(guó)立車數(shù)控技術(shù)改造
TFM160N全閉環(huán)法國(guó)立車是七十年代末從法國(guó)引進(jìn)的大型精密立式車床,其坐標(biāo)軸行程長(zhǎng)(其中X軸行程2.1M)、主軸電機(jī)功率大(37KW),一直用于飛機(jī)發(fā)動(dòng)機(jī)零部件加工。多年使用,機(jī)床控制器GE1060數(shù)控系統(tǒng)器件老化和損壞,存在功能性問(wèn)題;機(jī)床電氣已經(jīng)老化,刀庫(kù)運(yùn)行及自動(dòng)換刀等輔助功能故障率高。自93年起,該機(jī)床無(wú)法長(zhǎng)期、連續(xù)、穩(wěn)定運(yùn)行,一直進(jìn)行手動(dòng)操作,加工精度不能保證,工作效率低。94年進(jìn)行了數(shù)控技術(shù)改造。
我們采取的改造措施是:
① 原機(jī)床X、Z軸機(jī)械部分采用齒輪齒條傳動(dòng),感應(yīng)同步尺作為全閉環(huán)位置反饋元件,手動(dòng)運(yùn)動(dòng)X、Z平穩(wěn)、均勻;因而,保留原機(jī)械、液壓部分,位置反饋元件不選用編碼器,而沿用感應(yīng)同步尺作全閉環(huán)位置控制。
② 立車手動(dòng)操作和數(shù)控操作相互獨(dú)立、可以任選一種方式手動(dòng)操作可以不依賴于數(shù)控系統(tǒng)。
③ 刀庫(kù)控制原來(lái)采用繼電器和二塊邏輯電路板實(shí)現(xiàn),不夠穩(wěn)定,改成用數(shù)控系統(tǒng)SIPROM軟件編程實(shí)現(xiàn)隨機(jī)刀具交換功能,提高成功率。
改造后,法國(guó)立車的整體技術(shù)性能提高了:機(jī)床控制精度為0.1微米,打激光檢測(cè),定位精度和重復(fù)定位精度在微米級(jí);加工具有了連續(xù)性,一次裝卡多次換刀切削得以實(shí)現(xiàn),節(jié)省了輔助時(shí)間,提高了工作效率。法國(guó)立車在為國(guó)外加工1472件時(shí)工效提高6倍,原來(lái)加工1件需三天時(shí)間,改造后只需半天,生產(chǎn)效率提高十倍。
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