數控車床準停常見的故障都有(you)哪些？下面小編就給(gei)大家介紹一下。

1、主軸不能準停

故障現象(xiang):某采用SIEMENS810M的(de)數控車床,配(pei)套(tao)6SC6502主(zhu)軸驅動(dong)器,在調試時,出(chu)現當主(zhu)軸轉速>200r/min時,主(zhu)軸不能定位的(de)故障。

分(fen)析與處理:為了分(fen)析確認故(gu)障原因(yin),維修時進行(xing)(xing)了如下試(shi)驗:①輸(shu)入并依(yi)次(ci)執行(xing)(xing)“S100M03;M19”指(zhi)令(ling),機(ji)床(chuang)(chuang)定(ding)位正常(chang)。②輸(shu)入并依(yi)次(ci)執行(xing)(xing)“S100M04;M19”指(zhi)令(ling),機(ji)床(chuang)(chuang)定(ding)位正常(chang)。③輸(shu)入并依(yi)次(ci)執行(xing)(xing)“S200M03;M05;M19”指(zhi)令(ling),機(ji)床(chuang)(chuang)定(ding)位正常(chang)。④直接輸(shu)入并依(yi)次(ci)執行(xing)(xing)“S200M03;M19”指(zhi)令(ling),機(ji)床(chuang)(chuang)不能定(ding)位。

根據以上試驗,確認系(xi)統、驅動器工(gong)作正常,考慮引(yin)(yin)起故障(zhang)(zhang)的(de)(de)可能原因是編碼器高(gao)速(su)特性不良或(huo)主(zhu)(zhu)軸實際(ji)定位速(su)度(du)過高(gao)引(yin)(yin)起的(de)(de)。因此,檢查主(zhu)(zhu)軸電動機實際(ji)轉(zhuan)速(su),發現(xian)與指(zhi)令值(zhi)相差很大,當(dang)執行指(zhi)令S200時,實際(ji)機床(chuang)主(zhu)(zhu)軸轉(zhuan)速(su)為300r/min,調整主(zhu)(zhu)軸驅動器參數(shu),使主(zhu)(zhu)軸實際(ji)轉(zhuan)速(su)與指(zhi)令值(zhi)相符后,故障(zhang)(zhang)排除(chu)。

2、主(zhu)軸準(zhun)停位置不穩定

故(gu)障現象:某采用SIEMENS810M的數控(kong)車床,配套6SC6502主(zhu)軸(zhou)驅動器,在(zai)調(diao)試(shi)時,出(chu)現主(zhu)軸(zhou)定位點不(bu)穩(wen)定的故(gu)障。

分析與處理:通過反復試驗多次(ci)定(ding)(ding)(ding)位(wei)(wei)(wei)(wei),確(que)認(ren)故障的(de)實際現象為:①該機(ji)床(chuang)(chuang)可以在任意(yi)時刻進(jin)行(xing)主軸定(ding)(ding)(ding)位(wei)(wei)(wei)(wei),定(ding)(ding)(ding)位(wei)(wei)(wei)(wei)動作(zuo)正確(que)。②只要機(ji)床(chuang)(chuang)不(bu)關(guan)機(ji),不(bu)論進(jin)行(xing)多少次(ci)定(ding)(ding)(ding)位(wei)(wei)(wei)(wei),其(qi)定(ding)(ding)(ding)位(wei)(wei)(wei)(wei)點總是保持不(bu)變。③機(ji)床(chuang)(chuang)關(guan)機(ji)后,再次(ci)開(kai)機(ji)執行(xing)主軸定(ding)(ding)(ding)位(wei)(wei)(wei)(wei),定(ding)(ding)(ding)位(wei)(wei)(wei)(wei)位(wei)(wei)(wei)(wei)置與關(guan)機(ji)前不(bu)同,在完成定(ding)(ding)(ding)位(wei)(wei)(wei)(wei)后,只要不(bu)關(guan)機(ji),以后每次(ci)定(ding)(ding)(ding)位(wei)(wei)(wei)(wei)總是保持在該位(wei)(wei)(wei)(wei)置不(bu)變。④每次(ci)關(guan)機(ji)后,重(zhong)新定(ding)(ding)(ding)位(wei)(wei)(wei)(wei),其(qi)定(ding)(ding)(ding)位(wei)(wei)(wei)(wei)點都不(bu)同,主軸可以在任意(yi)位(wei)(wei)(wei)(wei)置定(ding)(ding)(ding)位(wei)(wei)(wei)(wei)。

主(zhu)軸(zhou)定(ding)位(wei)的(de)過(guo)(guo)程(cheng),是(shi)將主(zhu)軸(zhou)停止在(zai)(zai)編(bian)(bian)碼(ma)(ma)器“零(ling)(ling)位(wei)脈(mo)沖(chong)(chong)”位(wei)置(zhi)的(de)定(ding)位(wei)過(guo)(guo)程(cheng),并在(zai)(zai)該點進行(xing)位(wei)置(zhi)閉環(huan)調節(jie)。根據以上(shang)試驗(yan),可以確認故(gu)障(zhang)是(shi)由于編(bian)(bian)碼(ma)(ma)器的(de)“零(ling)(ling)位(wei)脈(mo)沖(chong)(chong)”不固定(ding)引(yin)起(qi)的(de)。分析可能引(yin)起(qi)以上(shang)故(gu)障(zhang)的(de)原因有:①編(bian)(bian)碼(ma)(ma)器固定(ding)不良(liang)(liang),在(zai)(zai)旋轉過(guo)(guo)程(cheng)中(zhong)編(bian)(bian)碼(ma)(ma)器與(yu)主(zhu)軸(zhou)的(de)相對位(wei)置(zhi)在(zai)(zai)不斷變(bian)化。②編(bian)(bian)碼(ma)(ma)器不良(liang)(liang),無“零(ling)(ling)位(wei)脈(mo)沖(chong)(chong)”輸出或“零(ling)(ling)位(wei)脈(mo)沖(chong)(chong)”受到干擾。③編(bian)(bian)碼(ma)(ma)器連接錯(cuo)誤(wu)。

逐一(yi)(yi)檢查上述原因(yin),排除了編碼(ma)(ma)器(qi)固定不(bu)良、編碼(ma)(ma)器(qi)不(bu)良的(de)原因(yin)。進一(yi)(yi)步(bu)檢查編碼(ma)(ma)器(qi)的(de)連(lian)接,發(fa)現該編碼(ma)(ma)器(qi)內部的(de)“零(ling)位脈(mo)沖”Ua0與(yu)*Ua0引出線接反(fan),重新連(lian)接后(hou),故障排除。

3、主軸準停時出現振蕩

故(gu)障現象(xiang):某采用SIEMENS810M的(de)數控(kong)車床,在更換了(le)主(zhu)軸(zhou)器后,出現主(zhu)軸(zhou)定位(wei)時(shi)不(bu)斷振蕩,無法完成定位(wei)的(de)。

以(yi)上(shang)就(jiu)是小編(bian)為大家介紹的(de)數(shu)控車床準停常見的(de)故障(zhang)，希望大家能夠有(you)所(suo)了解(jie)。