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蝸輪蝸桿減速機損壞原因分析及改進

文章(zhang)出(chu)處(chu):admin 人氣:發表時(shi)間:2019-10-28 11:33

 
    蝸(gua)(gua)(gua)(gua)輪(lun)(lun)(lun)(lun)(lun)蝸(gua)(gua)(gua)(gua)桿(gan)減(jian)(jian)(jian)(jian)速(su)機(ji)損(sun)壞(huai)原因分(fen)析及(ji)改進。蝸(gua)(gua)(gua)(gua)輪(lun)(lun)(lun)(lun)(lun)蝸(gua)(gua)(gua)(gua)桿(gan)減(jian)(jian)(jian)(jian)速(su)機(ji)經過使用幾(ji)個月后發(fa)生故(gu)障,經開箱(xiang)檢查發(fa)現(xian)蝸(gua)(gua)(gua)(gua)輪(lun)(lun)(lun)(lun)(lun)輪(lun)(lun)(lun)(lun)(lun)輪(lun)(lun)(lun)(lun)(lun)齒(chi)(chi)(chi)損(sun)壞(huai)嚴重(zhong),箱(xiang)內油池內含有(you)大量銅屑,其(qi)余零(ling)件完好。蝸(gua)(gua)(gua)(gua)輪(lun)(lun)(lun)(lun)(lun)蝸(gua)(gua)(gua)(gua)桿(gan)發(fa)生損(sun)壞(huai)主要表現(xian)為蝸(gua)(gua)(gua)(gua)輪(lun)(lun)(lun)(lun)(lun)齒(chi)(chi)(chi)面(mian)(mian)膠合磨損(sun),對(dui)材質(zhi)進行檢驗并沒有(you)發(fa)現(xian)問題,初步判斷(duan)應該為減(jian)(jian)(jian)(jian)速(su)機(ji)蝸(gua)(gua)(gua)(gua)輪(lun)(lun)(lun)(lun)(lun)齒(chi)(chi)(chi)面(mian)(mian)強(qiang)(qiang)度(du)不足。RV減(jian)(jian)(jian)(jian)速(su)機(ji)蝸(gua)(gua)(gua)(gua)桿(gan)是細長桿(gan),由優質(zhi)碳素鋼或合金鋼制造成的(de)高強(qiang)(qiang)度(du)元件,除剛(gang)度(du)需(xu)要校核計(ji)(ji)算外,齒(chi)(chi)(chi)面(mian)(mian)強(qiang)(qiang)度(du)和抗(kang)彎(wan)(wan)強(qiang)(qiang)度(du)遠高于RV減(jian)(jian)(jian)(jian)速(su)機(ji)蝸(gua)(gua)(gua)(gua)輪(lun)(lun)(lun)(lun)(lun)齒(chi)(chi)(chi)面(mian)(mian),所以強(qiang)(qiang)度(du)設(she)計(ji)(ji)校核計(ji)(ji)算僅對(dui)蝸(gua)(gua)(gua)(gua)輪(lun)(lun)(lun)(lun)(lun),不考慮蝸(gua)(gua)(gua)(gua)桿(gan), 況且實際使用中也沒有(you)發(fa)現(xian)蝸(gua)(gua)(gua)(gua)桿(gan)損(sun)壞(huai),又因蝸(gua)(gua)(gua)(gua)輪(lun)(lun)(lun)(lun)(lun)的(de)抗(kang)彎(wan)(wan)強(qiang)(qiang)度(du)遠高于其(qi)齒(chi)(chi)(chi)面(mian)(mian)強(qiang)(qiang)度(du),故(gu)圓柱蝸(gua)(gua)(gua)(gua)桿(gan)傳動的(de)強(qiang)(qiang)度(du)設(she)計(ji)(ji)、校核計(ji)(ji)算是指(zhi)RV減(jian)(jian)(jian)(jian)速(su)機(ji)蝸(gua)(gua)(gua)(gua)輪(lun)(lun)(lun)(lun)(lun)齒(chi)(chi)(chi)面(mian)(mian)強(qiang)(qiang)度(du)計(ji)(ji)算。
 
RV減速機,NMRV減速機,渦輪渦桿減速機
 
RV減速機蝸輪齒(chi)(chi)面的主要失效(xiao)形式是膠(jiao)合磨(mo)損(sun),蝸輪蝸桿減速器齒(chi)(chi)面磨(mo)損(sun)與(yu)承受的接觸應力(li)大小(xiao)有關,再注(zhu)入(ru)影響膠(jiao)合磨(mo)損(sun)的各(ge)種(zhong)修正系數,就(jiu)可以(yi)給出齒(chi)(chi)面強度計算。本篇文章分析了蝸輪蝸桿減速機頻繁(fan)損(sun)壞(huai)的現象(xiang),通過(guo)具(ju)體的理(li)論計算和強度校核終確定了損(sun)壞(huai)原因,并(bing)提出了新的設計方(fang)案(an),進行了重新設計。
改進措施(shi):RV減速(su)(su)機蝸(gua)輪(lun)(lun)(lun)蝸(gua)桿(gan)(gan)(gan)傳(chuan)(chuan)(chuan)(chuan)(chuan)動(dong)類型由(you)阿基(ji)米德圓柱(zhu)蝸(gua)桿(gan)(gan)(gan)傳(chuan)(chuan)(chuan)(chuan)(chuan)動(dong)副(fu)更(geng)改為平(ping)面(mian)(mian)二次包絡環(huan)(huan)面(mian)(mian)蝸(gua)桿(gan)(gan)(gan)傳(chuan)(chuan)(chuan)(chuan)(chuan)動(dong)副(fu)。分度(du)(du)曲(qu)面(mian)(mian)為圓環(huan)(huan)面(mian)(mian)的(de)蝸(gua)桿(gan)(gan)(gan)統稱(cheng)(cheng)環(huan)(huan)面(mian)(mian)蝸(gua)桿(gan)(gan)(gan),環(huan)(huan)面(mian)(mian)蝸(gua)桿(gan)(gan)(gan)與相配蝸(gua)輪(lun)(lun)(lun)組成環(huan)(huan)面(mian)(mian)蝸(gua)桿(gan)(gan)(gan)副(fu)稱(cheng)(cheng)為環(huan)(huan)面(mian)(mian)蝸(gua)桿(gan)(gan)(gan)傳(chuan)(chuan)(chuan)(chuan)(chuan)動(dong),環(huan)(huan)面(mian)(mian)蝸(gua)桿(gan)(gan)(gan)齒(chi)面(mian)(mian)通(tong)常用直線或曲(qu)線刃(ren)廓(kuo)的(de)車(che)刀采(cai)用軌跡(ji)法(fa)(fa)刨成,亦(yi)可(ke)用產形(xing)面(mian)(mian)為平(ping)面(mian)(mian)(或曲(qu)面(mian)(mian))采(cai)用展成法(fa)(fa)刨成。與圓柱(zhu)蝸(gua)桿(gan)(gan)(gan)相比,蝸(gua)輪(lun)(lun)(lun)蝸(gua)桿(gan)(gan)(gan)減速(su)(su)機面(mian)(mian)蝸(gua)桿(gan)(gan)(gan)傳(chuan)(chuan)(chuan)(chuan)(chuan)動(dong)具有如下優點(dian):由(you)于(yu)(yu)減速(su)(su)箱蝸(gua)桿(gan)(gan)(gan)包圍蝸(gua)輪(lun)(lun)(lun),同時參(can)與工作的(de)RV減速(su)(su)機蝸(gua)輪(lun)(lun)(lun)齒(chi)數(shu)多,有較(jiao)大(da)的(de)重(zhong)合(he)度(du)(du);在蝸(gua)輪(lun)(lun)(lun)齒(chi)面(mian)(mian)上的(de)嚙合(he)區內,嚙合(he)點(dian)處(chu)的(de)角在65度(du)(du)-85度(du)(du)之(zhi)間變化,這是環(huan)(huan)面(mian)(mian)蝸(gua)桿(gan)(gan)(gan)傳(chuan)(chuan)(chuan)(chuan)(chuan)動(dong)優于(yu)(yu)圓柱(zhu)蝸(gua)桿(gan)(gan)(gan)傳(chuan)(chuan)(chuan)(chuan)(chuan)動(dong)的(de)重(zhong)要的(de)標(biao)志之(zhi),故環(huan)(huan)面(mian)(mian)蝸(gua)桿(gan)(gan)(gan)傳(chuan)(chuan)(chuan)(chuan)(chuan)動(dong)的(de)接觸線形(xing)狀極有利(li)于(yu)(yu)共軛齒(chi)面(mian)(mian)間動(dong)壓油(you)膜的(de)形(xing)成,具有潤(run)滑狀態好、磨(mo)損小、傳(chuan)(chuan)(chuan)(chuan)(chuan)動(dong)效率(lv)高(gao)的(de)特(te)點(dian)。
環(huan)(huan)(huan)面(mian)(mian)(mian)(mian)蝸(gua)(gua)(gua)(gua)(gua)桿(gan)(gan)(gan)(gan)傳(chuan)(chuan)(chuan)(chuan)(chuan)(chuan)(chuan)動(dong)(dong)(dong)(dong)(dong)共軛齒面(mian)(mian)(mian)(mian)間具有(you)二(er)次嚙(nie)合(he)和雙接(jie)觸線(xian)的(de)嚙(nie)合(he)特(te)(te)性(xing),明顯(xian)的(de)增大了(le)小接(jie)觸線(xian)長度(du),這是優于(yu)圓柱蝸(gua)(gua)(gua)(gua)(gua)桿(gan)(gan)(gan)(gan)傳(chuan)(chuan)(chuan)(chuan)(chuan)(chuan)(chuan)動(dong)(dong)(dong)(dong)(dong)的(de)又(you)重要標志。另(ling)外蝸(gua)(gua)(gua)(gua)(gua)輪(lun)(lun)蝸(gua)(gua)(gua)(gua)(gua)桿(gan)(gan)(gan)(gan)減(jian)速(su)機(ji)環(huan)(huan)(huan)面(mian)(mian)(mian)(mian)蝸(gua)(gua)(gua)(gua)(gua)桿(gan)(gan)(gan)(gan)傳(chuan)(chuan)(chuan)(chuan)(chuan)(chuan)(chuan)動(dong)(dong)(dong)(dong)(dong)誘導曲率(lv)半徑較大,故共軛齒面(mian)(mian)(mian)(mian)間接(jie)觸應力(li)明顯(xian)減(jian)小。綜合(he)所述,環(huan)(huan)(huan)面(mian)(mian)(mian)(mian)蝸(gua)(gua)(gua)(gua)(gua)桿(gan)(gan)(gan)(gan)傳(chuan)(chuan)(chuan)(chuan)(chuan)(chuan)(chuan)動(dong)(dong)(dong)(dong)(dong)具有(you)承(cheng)(cheng)載(zai)能力(li)大、傳(chuan)(chuan)(chuan)(chuan)(chuan)(chuan)(chuan)動(dong)(dong)(dong)(dong)(dong)效率(lv)高(gao)、工(gong)作平(ping)穩、振動(dong)(dong)(dong)(dong)(dong)小、噪音低(di),結構緊湊(cou)的(de)特(te)(te)點。但環(huan)(huan)(huan)面(mian)(mian)(mian)(mian)蝸(gua)(gua)(gua)(gua)(gua)桿(gan)(gan)(gan)(gan)的(de)加工(gong)工(gong)藝較復(fu)雜,安裝精度(du)要求(qiu)高(gao),需(xu)要專用設(she)備,滾(gun)刀制造(zao)困難,成本高(gao)。環(huan)(huan)(huan)面(mian)(mian)(mian)(mian)蝸(gua)(gua)(gua)(gua)(gua)桿(gan)(gan)(gan)(gan)傳(chuan)(chuan)(chuan)(chuan)(chuan)(chuan)(chuan)動(dong)(dong)(dong)(dong)(dong)所用材(cai)料、熱處(chu)理工(gong)藝與圓柱蝸(gua)(gua)(gua)(gua)(gua)桿(gan)(gan)(gan)(gan)傳(chuan)(chuan)(chuan)(chuan)(chuan)(chuan)(chuan)動(dong)(dong)(dong)(dong)(dong)基本相同(tong)(tong),以環(huan)(huan)(huan)面(mian)(mian)(mian)(mian)蝸(gua)(gua)(gua)(gua)(gua)桿(gan)(gan)(gan)(gan)咽喉平(ping)面(mian)(mian)(mian)(mian)為(wei)計算(suan)(suan)平(ping)面(mian)(mian)(mian)(mian),在環(huan)(huan)(huan)面(mian)(mian)(mian)(mian)蝸(gua)(gua)(gua)(gua)(gua)桿(gan)(gan)(gan)(gan)斜(xie)齒輪(lun)(lun)減(jian)速(su)機(ji)傳(chuan)(chuan)(chuan)(chuan)(chuan)(chuan)(chuan)動(dong)(dong)(dong)(dong)(dong)的(de)中間平(ping)面(mian)(mian)(mian)(mian)內,其受力(li)分析與圓柱蝸(gua)(gua)(gua)(gua)(gua)桿(gan)(gan)(gan)(gan)傳(chuan)(chuan)(chuan)(chuan)(chuan)(chuan)(chuan)動(dong)(dong)(dong)(dong)(dong)完(wan)全相同(tong)(tong),環(huan)(huan)(huan)面(mian)(mian)(mian)(mian)蝸(gua)(gua)(gua)(gua)(gua)桿(gan)(gan)(gan)(gan)傳(chuan)(chuan)(chuan)(chuan)(chuan)(chuan)(chuan)動(dong)(dong)(dong)(dong)(dong)的(de)種類繁多(duo),不(bu)(bu)同(tong)(tong)的(de)環(huan)(huan)(huan)面(mian)(mian)(mian)(mian)蝸(gua)(gua)(gua)(gua)(gua)桿(gan)(gan)(gan)(gan)傳(chuan)(chuan)(chuan)(chuan)(chuan)(chuan)(chuan)動(dong)(dong)(dong)(dong)(dong)有(you)不(bu)(bu)同(tong)(tong)的(de)承(cheng)(cheng)載(zai)能力(li),實踐證明平(ping)面(mian)(mian)(mian)(mian)二(er)次包絡環(huan)(huan)(huan)面(mian)(mian)(mian)(mian)蝸(gua)(gua)(gua)(gua)(gua)桿(gan)(gan)(gan)(gan)傳(chuan)(chuan)(chuan)(chuan)(chuan)(chuan)(chuan)動(dong)(dong)(dong)(dong)(dong)的(de)承(cheng)(cheng)載(zai)能力(li)高(gao)于(yu)直廓環(huan)(huan)(huan)面(mian)(mian)(mian)(mian)蝸(gua)(gua)(gua)(gua)(gua)桿(gan)(gan)(gan)(gan)傳(chuan)(chuan)(chuan)(chuan)(chuan)(chuan)(chuan)動(dong)(dong)(dong)(dong)(dong),環(huan)(huan)(huan)面(mian)(mian)(mian)(mian)蝸(gua)(gua)(gua)(gua)(gua)桿(gan)(gan)(gan)(gan)傳(chuan)(chuan)(chuan)(chuan)(chuan)(chuan)(chuan)動(dong)(dong)(dong)(dong)(dong)的(de)蝸(gua)(gua)(gua)(gua)(gua)桿(gan)(gan)(gan)(gan)強(qiang)(qiang)(qiang)度(du)高(gao)于(yu)蝸(gua)(gua)(gua)(gua)(gua)輪(lun)(lun)強(qiang)(qiang)(qiang)度(du),蝸(gua)(gua)(gua)(gua)(gua)輪(lun)(lun)的(de)辦(ban)齒抗彎強(qiang)(qiang)(qiang)度(du)高(gao)于(yu)齒輪(lun)(lun)的(de)齒面(mian)(mian)(mian)(mian)強(qiang)(qiang)(qiang)度(du),對于(yu)環(huan)(huan)(huan)面(mian)(mian)(mian)(mian)蝸(gua)(gua)(gua)(gua)(gua)桿(gan)(gan)(gan)(gan)傳(chuan)(chuan)(chuan)(chuan)(chuan)(chuan)(chuan)動(dong)(dong)(dong)(dong)(dong)的(de)強(qiang)(qiang)(qiang)度(du)計算(suan)(suan)到(dao)目前(qian)為(wei)止還沒有(you)完(wan)整(zheng)可(ke)靠的(de)強(qiang)(qiang)(qiang)度(du)計算(suan)(suan)方法,現多(duo)用圖表(biao)法或(huo)借助(zhu)外的(de)功率(lv)表(biao)進(jin)行強(qiang)(qiang)(qiang)校核計算(suan)(suan)和選用,根據實際(ji)設(she)計選用的(de)蝸(gua)(gua)(gua)(gua)(gua)輪(lun)(lun)蝸(gua)(gua)(gua)(gua)(gua)桿(gan)(gan)(gan)(gan)參數(shu)。
RV減速(su)機,NMRV減速(su)機,渦(wo)輪渦(wo)桿減速(su)機
   
 

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