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漸開線圓柱齒輪傳動設計計算示例

2014-09-22 17:10 作者:管理員11 來源:未知 瀏覽: 字號:

摘要:設計示例 例5 設計圖8.2-87所示的球磨機的單級圖柱齒 輪減速器的斜齒畫柱齒輪傳動。已知小齒輪傳遞的額 定功率P = 80kW,小齒輪轉速n1=730r/min,傳動比i =3.11,單向運轉,滿載工作時間35000h。 解: (1)選擇齒輪材料,確定試驗齒輪的疲勞極限應力 參考表8.2-

設計示例
    例5 設計圖8.2-87所示的球磨機的單級圖柱齒
輪減速器的斜齒畫柱齒輪傳動。已知小齒輪傳遞的額
定功率P = 80kW,小齒輪轉速n1=730r/min,傳動比i
=3.11,單向運轉,滿載工作時間35000h。
    解:
    (1)選擇齒輪材料,確定試驗齒輪的疲勞極限應力
球磨機傳動簡圖
    參考表8.2-90,表8.2-91、表8.2-95,表8.2-96,選
擇齒輪的材料為
    小齒輪:38SiMnMo,調質處理,表面硬度320~
340HBW
    大齒輪:35SiMn,調質處理,表面硬度280~
300HBW
    由圖8.2-16和圖8.2-29,按MQ級質量要求取值,
查得
    σHlim1=80OMPa,σHlim2=76OMPa
    σFE1=640MPa,σFE2=600MPa
    (2)按齒面接觸強度初步確定中心距,并初選主
要參數


    根據齒輪圓周速度,參考表8.2-100和表8.2-
102,選擇齒輪精度等級為7級
(3)校核齒而接觸疲勞強度






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