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What are the functions of the retaining ring

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What are the functions of the retaining ring

date:[2015-04-03]     pk_hits:
擋圈是緊固在軸上的圈形機(jī)件,可以防止裝在軸上的其他零件松動(dòng)掉落。利用線材沖切工藝制成,截面呈圓形。
擋圈的作用是通過軸承蓋和其緊固螺釘使?jié)L動(dòng)軸承和齒輪不發(fā)生軸向松動(dòng),要求擋圈兩邊相平行,而對尺寸的精度要求不高,為了裝配簡便,擋圈孔和軸的配合要求為間隙配合。
擋圈

擋圈和軸之間無相對運(yùn)動(dòng),擋圈尺寸對運(yùn)動(dòng)精度沒有影響,為了好加工,其孔的公差等級(jí)確定為IT9。要使擋圈孔與軸的配合為間隙配合,有兩種辦法:一是做擋圈孔的時(shí)候盡量做大。二是將軸做成基本尺寸相同而偏差非常小的階梯軸,令其和擋圈孔配合處的軸做小。
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