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RV傳動效率分析

2014-08-09 23:33 作者:管理員11 來源:未知 瀏覽: 字號:

摘要:1) RV傳動的嚙合效率分析 以轉化機構法為基礎,假設行星齒輪傳動的摩擦損失功率等于它的轉化機構的摩擦損失功率。該假定是建立在以下基礎上: ①嚙合摩擦損失是功率損失的主要部分,其大小取決于齒廓間的摩擦因數、作用力和相對滑動速度,而轉化機構中構件間

    1) RV傳動的嚙合效率分析
    以轉化機構法為基礎,假設行星齒輪傳動的摩擦損失功率等于它的轉化機構的摩擦損失功率。該假定是建立在以下基礎上:
    ①嚙合摩擦損失是功率損失的主要部分,其大小取決于齒廓間的摩擦因數、作用力和相對滑動速度,而轉化機構中構件間的相對速度、齒廓間的作用力和摩擦因數并沒有改變。
    ②忽略行星齒輪傳動中由于行星輪的離心力作用而增加的軸承摩擦損失。在上述假定條件下,應用傳動比方法可推導出傳動效率的計算公式。

    因封閉差動齒輪傳動的RV傳動比i16是組成它的各個傳動的運動內傳動比(當轉臂固定時,相應的各個傳動的運動傳動比)的函數,得

    因此,封閉差動齒輪傳動的效率為


    2) RV傳動的效率計算
    RV傳動中,主要的功率損失有嚙合摩擦損失與滾動軸承的摩擦損失,因此RV傳動的傳動效率為
(責任編輯:laugh521521)
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