【正文】 機(jī)械設(shè)計(jì)課程設(shè)計(jì) 1 機(jī)械設(shè)計(jì)課程設(shè)計(jì)說(shuō)明書 目錄 1 設(shè)計(jì)任務(wù)書 ............................................................................................................... 3 題目名稱 設(shè)計(jì)膠帶輸送機(jī)的傳動(dòng)裝置 ........................................................... 3 工作條件 ............................................................................................................... 3 技術(shù)數(shù)據(jù) ............................................................................................................... 3 2 電動(dòng)機(jī)的選擇計(jì)算 ................................................................................................... 3 選擇電動(dòng)機(jī)系列 ................................................................................................... 3 滾筒轉(zhuǎn)動(dòng)所需要的有效功率 ............................................................................... 3 確定電動(dòng)機(jī)的轉(zhuǎn)速 ............................................................................................... 4 3 傳動(dòng)裝置的運(yùn)動(dòng)及動(dòng)力參數(shù)計(jì)算 ........................................................................... 4 分配傳動(dòng)比 ........................................................................................................... 4 總傳動(dòng)比 ............................................................................................................... 5 各級(jí)傳動(dòng)比的分配 ............................................................................................... 5 各軸功率、轉(zhuǎn)速和轉(zhuǎn)矩的計(jì)算 ........................................................................... 5 Ⅰ軸（高速軸） ................................................................................................... 5 Ⅱ軸（中間軸） ................................................................................................... 5 Ⅲ軸（低速軸） ................................................................................................... 5 Ⅳ軸（傳動(dòng)軸） ................................................................................................... 5 Ⅴ軸（卷筒軸） ................................................................................................... 6 開式齒輪的設(shè)計(jì) ................................................................................................... 6 材料選擇 ............................................................................................................... 6 按齒根彎曲疲勞強(qiáng)度確定模數(shù) ........................................................................... 6 齒輪強(qiáng)度校核 ....................................................................................................... 7 齒輪主要幾何參數(shù) ............................................................................................... 9 4 閉式齒輪設(shè)計(jì) ........................................................................................................... 9 減速器高速級(jí)齒輪的設(shè)計(jì)計(jì)算 ........................................................................... 9 材料選擇 ............................................................................................................... 9 按齒面接觸疲勞強(qiáng)度確定中心距 ....................................................................... 9 驗(yàn)算齒面接觸疲勞強(qiáng)度 ..................................................................................... 11 驗(yàn)算齒根彎曲疲勞強(qiáng)度 ................................................................................ 12 齒輪主要幾何參數(shù) .......................................................................................... 2 減速器低速級(jí)齒輪的設(shè)計(jì)計(jì)算 ...................................................................... 3 材料選擇 .......................................................................................................... 3 按齒面接觸疲勞強(qiáng)度確定中心距 .................................................................. 3 驗(yàn)算齒面接觸疲勞強(qiáng)度 .................................................................................. 4 驗(yàn)算齒根彎曲疲勞強(qiáng)度 .................................................................................. 6 齒輪主要幾何參數(shù) .......................................................................................... 7 5 軸的設(shè)計(jì)計(jì)算 ...................................................................................................... 7 機(jī)械設(shè)計(jì)課程設(shè)計(jì) 2 高速軸的設(shè)計(jì)計(jì)算 .......................................................................................... 7 中間軸的設(shè)計(jì)計(jì)算 .......................................................................................... 8 低速軸的設(shè)計(jì)計(jì)算 .......................................................................................... 8 6 低速軸的 強(qiáng)度校核 .............................................................................................. 9 繪制低速軸的力學(xué)模型 ...................................................................................... 9 求支反力 .............................................................................................................. 9 作彎矩、轉(zhuǎn)矩圖 ................................................................................................ 11