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定壓預緊——徑向預緊

2014-10-04 19:04 作者:管理員17 來源:未知 瀏覽: 字號:

摘要:5.2定壓預緊 利用彈簧使軸承承受一定的軸向載荷并產生預變 形的方法(圖14.4-13)稱定壓預緊。 一對角接觸球軸承采用定壓預緊時的載荷一變形 曲線如圖14.4-14所示。圖中彈簧產生的預緊載荷為 Fa,當外部軸向載荷F作用到軸上時,軸承I的軸 向變形增加S.,而軸承

5.2定壓預緊
    利用彈簧使軸承承受一定的軸向載荷并產生預變
形的方法(圖14.4-13)稱定壓預緊。
    一對角接觸球軸承采用定壓預緊時的載荷一變形
曲線如圖14.4-14所示。圖中彈簧產生的預緊載荷為
Fa,當外部軸向載荷F作用到軸上時,軸承I的軸
向變形增加S.,而軸承的變形量幾乎不變。因此,
定壓預緊不會出現卸載狀態,且預緊量不受溫度變化
的影響,但對軸承剛度的提高不大。
軸承定壓預緊結構
定壓預緊原理
5.3徑向預緊
    利用軸承和軸頸的過盈配合,便軸承內圈膨脹,
以消除徑向游隙并產生一定預變形的方法,稱軸承的
徑向頂緊。通常,這種預緊可以通過帶錐孔的軸承內
圈,在帶錐面的襯套或軸頸上移動來實現。

(責任編輯:laugh521521)
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