【正文】 縱置的時(shí)候，主減速器就是要應(yīng)該用準(zhǔn)雙曲面齒輪或弧齒錐齒比較好， 橫向發(fā)動(dòng)機(jī)我們一般是采用 斜齒輪 ； 在這里，我們有一個(gè)倒檔傳動(dòng)方案是使用滑動(dòng)齒輪，齒輪等將使用長(zhǎng) 嚙合 齒輪傳動(dòng)是更好的 。 8）變速器的工作噪聲低。 5）換擋迅速、省力、方便。 對(duì) 變速器的基本要求： 1）我們要確保汽車有一定的動(dòng)力性和經(jīng)濟(jì)性。 。 要求 ： ，以保證汽車有好的動(dòng)力性和經(jīng)濟(jì) 。 齒輪齒 數(shù)。包括軸數(shù)（ 2 軸），傳動(dòng)比范圍，中心距 A，外形尺寸，齒輪參數(shù)（模數(shù)，壓力角，螺旋角，齒輪寬度，齒輪變位系數(shù)，齒頂高系數(shù)），以及各個(gè)檔齒輪齒數(shù)的分配如下所示：。 AMT 同時(shí)也有 CVT 和 AT 或者 DCT 的版本。 CVT 的主要變速部分是鋼帶，由液壓來(lái)控制可動(dòng)部分和被動(dòng)部分之間的距離從而達(dá)到控制傳動(dòng)比的目的。我們 轎車手動(dòng)變速器 絕 大多 數(shù)來(lái)說(shuō)是四擋或五擋有級(jí)式齒輪傳動(dòng)變速器 ，一 般為 5+1 或 6+1 檔，切換工作齒輪時(shí)要利用鋼線或撥叉控制的結(jié)合套，所以它屬于有級(jí)變速器。 our design section contains a lot of request, for example, structural design and analysis of requirements and design calculations and checks . Most structural analysis are talking about here is to illustrate some of the transmission gear mechanism , while understanding and proper synchronization with whom they choose to generate and control mechanisms . Our design is the main drive shaft using twoaxis gearbox design calculations and checks , gear and bearing design calculations and strength, stiffness testing. Some of the relevant part of modern cars introduced foreign language translation and understanding , we do this to help us understand the many benefits of knowledge in this area. Here we are so grateful to have made some design review , and here I would like to thank Liang taught some students are willing to help the spirit of others, you really touched me . In this part of the program , the most important thing is to check the strength and stiffness of the shaft to be calculated . KEY WORDS: two shaft ransmission ynchronizer perating mechanism 廣西科技大學(xué) 2020 屆畢業(yè)設(shè)計(jì)說(shuō)明書 4 目錄 第 1 章緒論 ........................................................................................................................ 1 第 2 章變速器的概述及其方案的確定 ............................................................................ 2 變速器概述 ......................................................................................................... 2 對(duì)變速器的基本要求： .......................................................................... 3 變速器的組成 ..................................................................................................... 3 傳動(dòng)機(jī)構(gòu)布置方案 ............................................................................................. 3 變速器主要零件結(jié)構(gòu)的方案分析 ..................................................................... 5 齒輪型式 .......................................................................................................... 5 換檔結(jié)構(gòu)型式 .......................................................................................... 6 變速器軸承 .............................................................................................. 7 第 3 章變速器主要參數(shù)的選擇 ........................................................................................ 9 汽車的基本參數(shù) ................................................................................................. 9 傳動(dòng)比的選擇 ..................................................................................................... 9 主減速器傳動(dòng)比的確定 .......................................................................... 9 最低擋傳動(dòng)比的計(jì)算 ............................................................................ 10 中心距 ............................................................................................................... 11 變速器齒輪的設(shè)計(jì)計(jì)算 ................................................................................... 12 齒輪模數(shù) ................................................................................................ 12 壓力角 ? ................................................................................................ 12 螺旋角 ? ................................................................................................ 13 齒寬 b ..................................................................................................... 13 齒頂高系數(shù) ............................................................................................ 13 各擋齒輪齒數(shù)的分配 ............................................................................ 13 齒輪精度的選擇 .................................................................................... 17 螺旋方向 ................................................................................................ 17 齒輪變位系數(shù)的選擇 ............................................................................ 17 第 4 章變速器齒輪計(jì)算與校核 ...................................................................................... 21 齒輪的材料、損壞原因和形式 ........................................................................ 21 輪齒折斷 ................................................................................................. 21 齒面點(diǎn)蝕 ................................................................................................. 21 廣西科技大學(xué) 2020 屆畢業(yè)設(shè)計(jì)說(shuō)明書 5 齒面膠合 ................................................................................................. 21 變速器齒輪的強(qiáng)度計(jì)算與校核 ........................................................................ 21 計(jì)算各軸的轉(zhuǎn)矩 ..................................................................................... 22 齒輪彎曲強(qiáng)度計(jì)算： ............................................................................. 22 齒輪接觸應(yīng)力 ......................................................................................... 25 齒輪的受力分析 .................................................................................... 27 第 5 章軸的設(shè)計(jì)計(jì)算 ...................................................................................................... 28 軸的強(qiáng)度計(jì)算 .................................................................................................... 28 初選軸的直徑 .................................................................................................... 28 軸的強(qiáng)度計(jì)算 .................................................................................................... 29 軸上花鍵的設(shè)計(jì)計(jì)算 .......................................................................