18611727265
18611776020
4、 如何处(chu)理线切(qie)割(ge)加工中的短路现象(xiang)？
因排屑(xie)不畅造(zao)成短(duan)路的现象(xiang)时(shi)有发生(sheng)，特别在(zai)加工(gong)(gong)(gong)较厚(hou)工(gong)(gong)(gong)件时(shi)更为突出。 方法是：当短(duan)路发生(sheng)时(shi)，先关(guan)断自动、高频开关(guan)，关(guan)掉(diao)工(gong)(gong)(gong)作液泵，用(yong)刷(shua)子蘸上(shang)(shang)渗(shen)透性(xing)较强(qiang)的汽油(you)、煤油(you)、乙醇等(deng)溶剂，反复在(zai)工(gong)(gong)(gong)件两面随着运动的钼(mu)丝(si)(si)向切缝中渗(shen)透（要(yao)注意钼(mu)丝(si)(si)运动的方向）.直至用(yong)改(gai)锥(zhui)等(deng)工(gong)(gong)(gong)具在(zai)工(gong)(gong)(gong)件下端轻(qing)轻(qing)地(di)沿着加工(gong)(gong)(gong)的反方向触动钼(mu)丝(si)(si)，工(gong)(gong)(gong)件上(shang)(shang)端的钼(mu)丝(si)(si)能(neng)随着移(yi)动即可。然(ran)后，开启(qi)工(gong)(gong)(gong)作液泵和(he) 高频电源，依(yi)靠钼(mu)丝(si)(si)自身的颤动，恢复放电，继(ji)续(xu)加工(gong)(gong)(gong).
5、如何(he)处理(li)减少钼丝在起割点(dian)的断丝几率？
一般采用(yong)方法是机床(chuang)自动(dong)变频跟踪从外部切入工(gong)件，这样可(ke)以降低钼(mu)(mu)丝在起割点(dian)断丝的(de)几(ji)率，同时(shi)还要保证冷却液的(de)良好(hao)供应，以吸收放(fang)电爆(bao)炸力使钼(mu)(mu)丝产生(sheng)的(de)扰动(dong)，工(gong)件最好(hao)距离上(shang)下喷(pen)水口5－10mm,使冷却液可(ke)以较好(hao)的(de)包裹好(hao)钼(mu)(mu)丝。
6、如何处理断(duan)丝后原地穿丝？
断(duan)丝(si)(si)(si)(si)(si)后步进电机应仍保(bao)持在(zai)(zai)“吸合”状(zhuang)态。去(qu)掉(diao)较少一(yi)边废丝(si)(si)(si)(si)(si)，把(ba)剩余钼(mu)(mu)丝(si)(si)(si)(si)(si)调整到贮丝(si)(si)(si)(si)(si)筒上的(de)(de)适当(dang)位置继续使(shi)用(yong)(yong)(yong)(yong)(yong)。在(zai)(zai)切(qie)(qie)缝中(zhong)先(xian)用(yong)(yong)(yong)(yong)(yong)毛刷滴(di)(di)入煤(mei)油,使(shi)其润湿(shi)切(qie)(qie)缝,然后再(zai)在(zai)(zai)断(duan)点(dian)(dian)处滴(di)(di)一(yi)点(dian)(dian)润滑油 ─ 这一(yi)点(dian)(dian)很重(zhong)要(yao)。选一(yi)段比较平直的(de)(de)钼(mu)(mu)丝(si)(si)(si)(si)(si)，剪成尖(jian)头，并用(yong)(yong)(yong)(yong)(yong)打火机火焰烧烤这段钼(mu)(mu)丝(si)(si)(si)(si)(si)，使(shi)其发硬，用(yong)(yong)(yong)(yong)(yong)医用(yong)(yong)(yong)(yong)(yong)镊(nie)子捏着(zhe)钼(mu)(mu)丝(si)(si)(si)(si)(si)上部(bu)(bu)，悠着(zhe)劲在(zai)(zai)断(duan)丝(si)(si)(si)(si)(si)点(dian)(dian)顺着(zhe)切(qie)(qie)缝慢慢地每(mei)次2-3mm地往下送，直至(zhi)穿(chuan)(chuan)(chuan)过工(gong)件(jian)。新丝(si)(si)(si)(si)(si)在(zai)(zai)断(duan)丝(si)(si)(si)(si)(si)点(dian)(dian)往下穿(chuan)(chuan)(chuan)，要(yao)看原(yuan)丝(si)(si)(si)(si)(si)的(de)(de)损耗(hao)程度，（注意不能损耗(hao)太大）如(ru)果损耗(hao)较大，切(qie)(qie)缝也随之变小，新丝(si)(si)(si)(si)(si)则(ze)穿(chuan)(chuan)(chuan)不过去(qu)，这时(shi)可用(yong)(yong)(yong)(yong)(yong)一(yi)小片细纱纸把(ba)要(yao)穿(chuan)(chuan)(chuan)过工(gong)件(jian)的(de)(de)那部(bu)(bu)分(fen)丝(si)(si)(si)(si)(si)打磨光滑，再(zai)穿(chuan)(chuan)(chuan)就可以了。
7、如(ru)何处理调整(zheng)变频的跟踪速度？
调(diao)节变(bian)频(pin)跟(gen)(gen)(gen)踪速(su)(su)度本身不(bu)具有(you)提高加(jia)工(gong)(gong)速(su)(su)度的(de)(de)能力,而是保证(zheng)加(jia)工(gong)(gong)的(de)(de)稳定性。最佳调(diao)整变(bian)频(pin)的(de)(de)跟(gen)(gen)(gen)踪速(su)(su)度两个(ge)方法： 首(shou)先(xian)，最佳加(jia)工(gong)(gong)电流应(ying)是短路电流的(de)(de)80%左右(you)， 这(zhei)一规律可用(yong)于(yu)判(pan)断进(jin)给速(su)(su)度调(diao)整是否合适(shi)；其次，可通过(guo)电流表指(zhi)针的(de)(de)摆(bai)动情况判(pan)断，正常(chang)加(jia)工(gong)(gong)时电流表指(zhi)针应(ying)基本不(bu)动。如(ru)果经常(chang)向下摇(yao)摆(bai)，则说(shuo)明欠跟(gen)(gen)(gen)踪，应(ying)将跟(gen)(gen)(gen)踪速(su)(su)度调(diao)快(kuai)；如(ru)经常(chang)向上摇(yao)摆(bai)则说(shuo)明经常(chang)短路，属(shu)于(yu)过(guo)跟(gen)(gen)(gen)踪状态,应(ying)将跟(gen)(gen)(gen)踪速(su)(su)度调(diao)慢(man)；如(ru)指(zhi)针来回较大幅度摇(yao)摆(bai)则说(shuo)明加(jia)工(gong)(gong)不(bu)稳定,应(ying)判(pan)明原(yuan)因做(zuo)好参(can)数(shu)调(diao)节再加(jia)工(gong)(gong),否则易引起断丝。