減速電機-減速機 返回列表頁

VHR560AT-5UG
VHR560AT-60J

主要產(chǎn)品：日本東方馬達，泰映TROY減速電機，韓國SPG小功率馬達，

韓國DKM減速電機,CPG晟邦 ...

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：蘭工

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減速機技術(shù)資料：

減速機轉(zhuǎn)軸是減速機的重要零件之一，它是傳遞扭矩、帶動機械負載的主要部件。減速機軸必須有足夠的機械強度和剛度，才能完成減速機功率的傳遞，使減速機運行時不發(fā)生振動或定子、轉(zhuǎn)子相擦。

軸常見的損壞現(xiàn)象有：轉(zhuǎn)軸彎曲、軸頸磨損、軸裂紋和軸斷裂等。其損壞原因，除制造質(zhì)量本身有問題外，大多數(shù)是使用不當造成的。例如，拆卸皮帶輪時，不用工具而硬敲，再加上敲打時受力不當，極易引起軸的損壞。

1．轉(zhuǎn)軸彎曲的修理轉(zhuǎn)軸彎曲會造成減速機氣隙不均，產(chǎn)生振動和噪聲。

若彎曲不大，為了消除彎曲對轉(zhuǎn)子鐵芯段的影響，可以磨光軸頸、滑環(huán)和換向器等。在小型異步減速機中，也可以磨光轉(zhuǎn)子的鐵芯段，但轉(zhuǎn)子與定子間增大的間隙值不應(yīng)超過正常間隙的10％。

如果軸的彎曲值很大，以致不能用加工軸頸和軸上零件的方法來消除，可在壓力機上矯正，或用電焊機在彎曲處表面均勻堆焊一層，然后上車床，以轉(zhuǎn)子外圓為基準找出中心，車成要求尺寸，并用百分表檢查。

用敲打法矯正用冷態(tài)直軸法矯正轉(zhuǎn)軸的彎曲示意圖

2．軸頸磨損的修理軸頸磨損由于軸承內(nèi)圈與軸頸的配合過盈過小，在運行中發(fā)生軸與內(nèi)圈相對運動，使軸頸磨損而松動(即走內(nèi)圓)。這時，必須將軸頸修補到原來尺寸。常用的修補方法有下列幾種：

方法～：噴鍍或刷鍍。利用專門的設(shè)備將金屬鍍在磨損的軸頸上，再磨削到需要的直徑。此法適用于磨損深度不超過0．2毫米的情況。

方法二：補焊。將轉(zhuǎn)軸放在帶滾輪的支架上，用中碳鋼焊條進行手工電弧焊，從一端開始，一圈一圈地補焊，邊焊邊轉(zhuǎn)動轉(zhuǎn)子，直至將軸頸全部補焊完畢。冷卻后，放到車床上加工到所需尺寸。加工時，注意校正兩軸頸與轉(zhuǎn)子外圓的同軸度。

方法三：鑲套。當軸頸磨損較大或局部燒損發(fā)藍退火時，可將軸頸車圓上后，放在車床上加工套的外圓。

3．軸裂紋或斷裂的修理對于出現(xiàn)裂紋的軸，若其裂紋深度不超過軸頸的10％～15％、長度不超過軸長的10％(對縱向而言)或不超過圓周長的10％(對橫向而言)，可用堆焊法進行補救。

對于裂紋大或斷裂的軸，必須更換新軸，換軸時，小型減速機一般用35號鋼或45號鋼。換軸一時有困難，在不影響軸質(zhì)量的前提下，也可采用補接法

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