【正文】 same time, the reasonable design a set of matching operator. Through the basic parameter to calculate the transmission of all kinds of data, another checking strictly, guaranteed to meet design ， use requirements.Keywords：transmission synchronizer intermediate shaft3目錄1 緒 論 ..............................................................................................................................................................1 本次設(shè)計(jì)的目的及意義 ......................................................................................................................1 變速器的發(fā)展現(xiàn)狀 ..............................................................................................................................2 變速器設(shè)計(jì)面臨的主要問(wèn)題 ..............................................................................................................2 畢業(yè)設(shè)計(jì)任務(wù)及要求 ..........................................................................................................................32 變速器的總體方案確定 ................................................................................................................................4 變速器的功用及設(shè)計(jì)要求 ..................................................................................................................4 變速器傳動(dòng)機(jī)構(gòu)的型式選擇 ..............................................................................................................4 三軸式變速器與兩軸式變速器傳動(dòng)方案 ...............................................................................4 倒檔布局方案 ...........................................................................................................................6 零部件結(jié)構(gòu)方案分析 ..........................................................................................................................7 齒輪型式 ...................................................................................................................................7 變速器軸 ...................................................................................................................................8 變速器軸承的選擇 ...................................................................................................................83 變速器主要參數(shù)的選擇與齒輪設(shè)計(jì) ............................................................................................................9 變速器各檔傳動(dòng)比的確定 ..................................................................................................................9 主減速器傳動(dòng)比的確定 ...........................................................................................................9 最低檔傳動(dòng)比計(jì)算 ...................................................................................................................9 變速器各檔速比的配置 .........................................................................................................11 中心距 .....................................................................................................................................11 變速器的外形尺寸 .................................................................................................................12 齒輪參數(shù)的選擇 .....................................................................................................................12 各檔齒輪計(jì)算 .........................................................................................................................14 齒輪設(shè)計(jì)與計(jì)算 ................................................................................................................................19 齒輪材料的選擇原則 .............................................................................................................19 變速器齒輪強(qiáng)度校核 .............................................................................................................19 軸的結(jié)構(gòu)和尺寸設(shè)計(jì) ........................................................................................................................30 軸的工藝要求 .........................................................................................................................30 初選軸的直徑 .........................................................................................................................31 軸的強(qiáng)度校核 ....................................................................................................................................32 軸的剛度驗(yàn)算 .........................................................................................................................33 軸的強(qiáng)度計(jì)算 .........................................................................................................................41 軸承選擇與壽命計(jì)算 ........................................................................................................................46 輸入軸軸承的選擇與壽命計(jì)算 .............................................................................................464 變速器同步器與操縱機(jī)構(gòu)的設(shè)計(jì) ..............................................................................................................51 同步器設(shè)計(jì) ........................................................................................................................................51 同步器類型的選取 .................................................................................................................51 接近尺寸和分度尺寸 .............................................................................................................51 滑塊寬度、內(nèi)嚙合套缺口寬度 .............................................................................................514 同步器裝配間隙 .....................................................................................................................52 同步鎖環(huán)主要尺寸確定 ...................................................................................................................53 同步器校核 ........................................................................................................................................54 同步器同步時(shí)間校核 .............................................................................................................54 變速器的操縱機(jī)構(gòu) ............................