主軸(zhou)(zhou)軸(zhou)(zhou)承(cheng)的潤滑(hua)有兩(liang)種(zhong)(zhong)方(fang)法解決,一是(shi)(shi)在(zai)軸(zhou)(zhou)承(cheng)座上加(jia)裝油杯,通過人(ren)工(gong)加(jia)注潤滑(hua)脂去潤滑(hua)軸(zhou)(zhou)承(cheng);二是(shi)(shi)在(zai)主軸(zhou)(zhou)的封閉腔內(nei)灌注損(sun)耗(hao)系(xi)統(tong)用(yong)(yong)(yong)油,通過損(sun)耗(hao)系(xi)統(tong)用(yong)(yong)(yong)油的流(liu)動,滲透入軸(zhou)(zhou)承(cheng)內(nei)進行潤滑(hua)。但(dan)是(shi)(shi)不(bu)管(guan)采(cai)用(yong)(yong)(yong)哪種(zhong)(zhong)方(fang)法,或者是(shi)(shi)兩(liang)種(zhong)(zhong)方(fang)法同時使用(yong)(yong)(yong),不(bu)管(guan)是(shi)(shi)使用(yong)(yong)(yong)潤滑(hua)脂或損(sun)耗(hao)系(xi)統(tong)用(yong)(yong)(yong)油,還(huan)是(shi)(shi)同時使用(yong)(yong)(yong)潤滑(hua)脂和(he)損(sun)耗(hao)系(xi)統(tong)用(yong)(yong)(yong)油對(dui)軸(zhou)(zhou)承(cheng)進行潤滑(hua),振動篩工(gong)作了一段時間后,我們總是(shi)(shi)發現左右軸(zhou)(zhou)承(cheng)座的端面出現漏(lou)油現象,有時甚(shen)至漏(lou)油嚴重,拆開(kai)軸(zhou)(zhou)承(cheng)座檢(jian)查軸(zhou)(zhou)承(cheng)端蓋和(he)密封圈,未發現破損(sun)和(he)裂紋,為此(ci),我們百(bai)思不(bu)得其解,到底漏(lou)油的原因是(shi)(shi)什么呢?
要處理漏油問題,需做到兩點:一是主軸軸承維持在適宜的溫度;二是消弭偏心軸偏心(xin)局部在旋轉過程中對封鎖腔內介(jie)質(空氣(qi)或損耗系(xi)統用油)的(de)影(ying)響(xiang)。而且(qie)這兩點是(shi)相輔相成的(de),是(shi)后者對前者有比擬(ni)大的(de)影(ying)響(xiang)。
經過(guo)(guo)理論(lun)檢驗,采用在油杯里加注光(guang)滑脂,同(tong)時又(you)在封(feng)鎖腔內灌注損耗(hao)(hao)系統(tong)(tong)用油對主軸(zhou)軸(zhou)承(cheng)(cheng)同(tong)時停止光(guang)滑,效(xiao)果(guo)是好(hao)的。一(yi)方(fang)面光(guang)滑脂的光(guang)滑性能(neng)好(hao),還能(neng)夠梗塞軸(zhou)承(cheng)(cheng)裝配縫隙,避免(mian)油液走漏;另一(yi)方(fang)面損耗(hao)(hao)系統(tong)(tong)用油的活動性好(hao),冷卻效(xiao)果(guo)也好(hao),這樣能(neng)主軸(zhou)軸(zhou)承(cheng)(cheng)處于(yu)一(yi)個佳的工作(zuo)環境。找到了主軸(zhou)軸(zhou)承(cheng)(cheng)佳的光(guang)滑辦法(fa),那么(me)怎樣才干消弭偏心(xin)軸(zhou)偏心(xin)局部在旋轉過(guo)(guo)程(cheng)中對封(feng)鎖腔內介質(損耗(hao)(hao)系統(tong)(tong)用油)產生的影響呢?我(wo)們(men)的做法(fa)如下:
(1)在(zai)軸端對(dui)偏(pian)心軸焊接一(yi)個護(hu)套(tao),護(hu)套(tao)是厚度(du)為3mm的(de)(de)(de)(de)Q235鋼板(ban)卷成的(de)(de)(de)(de)圓筒(tong),圓筒(tong)內腔的(de)(de)(de)(de)半徑為偏(pian)心軸的(de)(de)(de)(de)半徑與偏(pian)心距之(zhi)和(he)。對(dui)偏(pian)心軸焊接護(hu)套(tao)的(de)(de)(de)(de)目的(de)(de)(de)(de)是為了給(gei)光(guang)滑(hua)油一(yi)個相對(dui)寧靜而(er)又(you)比(bi)擬平均的(de)(de)(de)(de)環(huan)狀(zhuang)(zhuang)運動(dong)空(kong)(kong)間(jian),當光(guang)滑(hua)油在(zai)這個環(huan)狀(zhuang)(zhuang)空(kong)(kong)間(jian)運動(dong)時,減少(shao)了油液互相之(zhi)間(jian)的(de)(de)(de)(de)碰撞和(he)摩擦,從而(er)了油溫的(de)(de)(de)(de)穩定。同時,光(guang)滑(hua)油在(zai)一(yi)個比(bi)擬平均的(de)(de)(de)(de)環(huan)狀(zhuang)(zhuang)空(kong)(kong)間(jian)運動(dong),由(you)于旋轉速度(du)不高(gao),其向外的(de)(de)(de)(de)向心力(li)較小,也就(jiu)了光(guang)滑(hua)油的(de)(de)(de)(de)相對(dui)寧靜,不至于向外走漏(lou),但光(guang)滑(hua)油又(you)能浸透入軸承內部對(dui)軸承停止光(guang)滑(hua)。
(2)為護(hu)套(tao)(tao)(tao)(tao)與(yu)偏(pian)(pian)心(xin)軸(zhou)之間(jian)(jian)的聯接強度,可在護(hu)套(tao)(tao)(tao)(tao)與(yu)偏(pian)(pian)心(xin)軸(zhou)之間(jian)(jian)灌注環氧樹脂,由于環氧樹脂具有(you)強大的粘(zhan)結性能,它能夠(gou)把護(hu)套(tao)(tao)(tao)(tao)和偏(pian)(pian)心(xin)軸(zhou)牢(lao)牢(lao)地固為一體,防止旋轉時護(hu)套(tao)(tao)(tao)(tao)發作(zuo)變形。
(3)思索偏(pian)(pian)心(xin)(xin)(xin)軸(zhou)因增加了(le)護套(tao)(tao)(護套(tao)(tao)自身有的重量)而抵消了(le)一局部偏(pian)(pian)心(xin)(xin)(xin)力(li)矩,從(cong)而了(le)偏(pian)(pian)心(xin)(xin)(xin)軸(zhou)對篩箱的力(li)矩輸(shu)出。為理解(jie)決這一問題,能(neng)夠(gou)思索恰當增大(da)偏(pian)(pian)心(xin)(xin)(xin)軸(zhou)的偏(pian)(pian)心(xin)(xin)(xin)距(ju),但(dan)是偏(pian)(pian)心(xin)(xin)(xin)距(ju)不能(neng)增加太大(da),由于(yu)偏(pian)(pian)心(xin)(xin)(xin)距(ju)越(yue)大(da),偏(pian)(pian)心(xin)(xin)(xin)軸(zhou)的加工本(ben)錢也就越(yue)高(gao)。