【正文】 . 4 ............................................................................................... 4 第 3 章 齒輪的設(shè)計(jì) ....................................................................................................................................... 6 ........................................................................................................... 6 、精度等級(jí)、材料及齒數(shù) ................................................................... 6 ................................................................................................... 6 、按齒根彎曲疲勞強(qiáng)度設(shè)計(jì) ................................................................................................ 8 ..................................................................................................................... 10 低速級(jí)齒輪傳動(dòng)設(shè)計(jì) .................................................................................................................... 10 、精度等級(jí)、材料及齒數(shù) ................................................................. 10 接觸疲勞強(qiáng)度設(shè)計(jì) ................................................................................................. 10 、按齒根彎曲疲勞強(qiáng)度設(shè)計(jì) .............................................................................................. 13 ..................................................................................................................... 14 ..................................................................................................... 15 、精度等級(jí)、材料及齒數(shù) ..................................................................... 15 設(shè)計(jì) ................................................................................................. 15 、按齒根彎曲疲勞強(qiáng)度設(shè)計(jì) .............................................................................................. 17 ............................................................................................................................. 18 第 4 章 軸的設(shè)計(jì) ........................................................................................................................................ 20 輸出軸的設(shè)計(jì) ................................................................................................................................ 20 求Ⅲ軸上的功率，轉(zhuǎn)速，轉(zhuǎn)矩 ...................................................................................... 20 求作用在齒輪上的力 ...................................................................................................... 20 ..................................................................................................... 20 ..................................................................................................................... 20 ................................................................................................................. 21 軸上零件的周向定位 ........................................................................................................ 21 主動(dòng)軸的設(shè)計(jì) ................................................................................................................................ 21 求主動(dòng)軸上的功率，轉(zhuǎn)速，轉(zhuǎn)矩 .................................................................................. 21 機(jī)械設(shè)計(jì)課程設(shè)計(jì) 求作用在齒輪上的力 ...................................................................................................... 22 初步確定軸 的最小直徑 .................................................................................................... 22 ..................................................................................................................... 22 中間軸的設(shè)計(jì) ................................................................................................................................ 23 求中間軸上的功率，轉(zhuǎn)速，轉(zhuǎn)矩 .................................................................................. 23 求作用在齒輪上的力 ...................................................................................................... 23 ..................................................................................................... 24 ..................................................................................................................... 24 第 5 章 箱體的設(shè)計(jì)及其附件的選擇 .......................................................................................................... 26 箱體的設(shè)計(jì) ................................................................................................................................... 26 ............................................................................................................................. 27 ................................................................................................. 27 ................................................................................................................. 27 ......................................................................................................................... 27 ： ................................................................................................................. 27 減速器附件的選擇 ........................................................................................................................ 27 第 6 章 校核 ................................................................................................................................................. 29 鍵的強(qiáng)度校核 ................................................................................................................................ 29 ．軸的校核 ..................................................................................................................................... 29 設(shè)計(jì)小結(jié) ....................................................................................................................................................... 34 參考資料 ....................................................................................................................................................... 35