江蘇創(chuang)為數控機(ji)床有(you)限(xian)公司
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定制中走絲數控線切割機床拖板長期高速運行,導致絲桿和軸承磨損;刀架的重復定位精度在長期使用中產生偏差;拖板每次都能準確回到加工起點,但加工工件尺寸仍然變化。此種現象一般由主軸引起,主軸的高速轉動使軸承磨損嚴重,導致加工尺寸變化。金屬加工微信,內容不錯,值得關注。中走絲數控線切割廠家上海解決(jue)方案:用百(bai)分(fen)表靠在刀(dao)架底部(bu),同(tong)時通過(guo)系統編輯一(yi)個固定(ding)循環程(cheng)序,檢(jian)查拖板的(de)重(zhong)復(fu)定(ding)位(wei)精度,調(diao)整絲(si)桿(gan)間隙,更換(huan)軸(zhou)承;用百(bai)分(fen)表檢(jian)查刀(dao)架的(de)重(zhong)復(fu)定(ding)位(wei)精度,調(diao)整機械(xie)或更換(huan)刀(dao)架;用百(bai)分(fen)表檢(jian)測(ce)加工工件(jian)后是否準確回到(dao)程(cheng)序起點,若(ruo)可(ke)以,則檢(jian)修(xiu)主軸(zhou),更換(huan)軸(zhou)承。
定制中走絲數控線切割上海工件材料:對不經鍛打、不淬火材料,在線切割加工前zui好采用低溫回火消除內應力,因為如果工件的內應力沒有得到消除,在切割時,有的工件會開裂,把鉬絲碰斷;有的會使間隙變形,把鉬絲夾斷或彈斷。如淬火后t8鋼在線切割加工中及易引起斷絲盡量少用。切割厚鋁材料時,由于排屑困難,導電塊磨損較大,注意及時更換。中走絲數控線切割廠家工(gong)(gong)(gong)(gong)件(jian)(jian)(jian)裝夾(jia):雖然(ran)線切割加(jia)(jia)工(gong)(gong)(gong)(gong)過程(cheng)中工(gong)(gong)(gong)(gong)件(jian)(jian)(jian)受(shou)力極小,但仍(reng)需牢固夾(jia)緊工(gong)(gong)(gong)(gong)件(jian)(jian)(jian),防止(zhi)加(jia)(jia)工(gong)(gong)(gong)(gong)過程(cheng)中因工(gong)(gong)(gong)(gong)件(jian)(jian)(jian)位(wei)置變動造(zao)成(cheng)斷絲(si)。同時要避免(mian)由于工(gong)(gong)(gong)(gong)件(jian)(jian)(jian)的自重和工(gong)(gong)(gong)(gong)件(jian)(jian)(jian)材(cai)料的彈(dan)性(xing)變形造(zao)成(cheng)的斷絲(si)。在加(jia)(jia)工(gong)(gong)(gong)(gong)厚重工(gong)(gong)(gong)(gong)件(jian)(jian)(jian)時,可(ke)在加(jia)(jia)工(gong)(gong)(gong)(gong)快要結束時,用磁鐵吸(xi)住將(jiang)要下落(luo)的工(gong)(gong)(gong)(gong)件(jian)(jian)(jian),或(huo)者人工(gong)(gong)(gong)(gong)保護下落(luo)的工(gong)(gong)(gong)(gong)件(jian)(jian)(jian),使其平(ping)行(xing)緩慢下落(luo)從而防止(zhi)斷絲(si)。
在電加工前先要用鋸條或扁銼,在腐蝕高度以內加上一條凹槽,以免粗加工時夾角放電集中,蝕除量過多,使粗加工修不到,產生凹模“塌角”,造成工件報廢。大小電極組裝在一起穿孔工作時,由于小電極的垂直精度不易保證,加工時又容易引起側向振動,再加上二次放電等因素,使小電極的加工間隙比大電極的加工間隙要大些。中走絲數控線切割廠家為了防止兩者間隙相差過大而影響尺寸精度誤差,一般在這種情況時,可將小電極尺寸適當縮小一些,這點在編排工藝及設計電極時,應預先考慮好。電火花高速穿孔機加工中要盡量設法避免“放炮”。電火花加工時,會產生各種氣體,如不及時排出,將集聚在電極下端或油杯內部。當氣體積累較多并被電火花引燃時,就會像“放炮”一樣沖破阻力排出。這時若工作或電極裝夾不牢,就會產生錯動,影響加工精度。因此,有些較大電極若要減輕重量鉆孔時,應使平的端面朝下,以減少存儲氣體的空間。另外,還可在油杯側面開小孔,或采用周期抬刀排氣來防止產生“放炮”定制中走絲數控線切割上海。
定制中走絲數控線切割故障原因:必須認真檢查工裝夾具,且考慮到操作者的操作方法,及裝夾的可靠性,由于裝夾引起的尺寸變化,必須改善工裝使工人盡量避免人為疏忽作出誤判現象;數控系統可能受到外界電源的波動或受到干擾后自動產生干擾脈沖,傳給驅動致使驅動接受多余的脈沖驅動電機奪走或少走現象,中走絲數控線切割廠家上海解(jie)(jie)決方案:了(le)解(jie)(jie)掌(zhang)握其規(gui)律,盡(jin)量采(cai)用一些抗(kang)(kang)干擾(rao)的(de)措施(shi),如:強電場(chang)干擾(rao)的(de)強電電纜與弱(ruo)電信號(hao)的(de)信號(hao)線(xian)隔離(li)(li),加入(ru)抗(kang)(kang)干擾(rao)的(de)吸收電容和采(cai)用屏蔽(bi)線(xian)隔離(li)(li),另外(wai),檢(jian)查(cha)地線(xian)是(shi)否連(lian)接牢固,接地觸點最近,采(cai)取一切抗(kang)(kang)干擾(rao)措施(shi)避免系統受(shou)干擾(rao)。