【正文】 e system. Transmission of the power structure of the vehicle, economy , manipulation of the reliability and portability, the smooth drive and have a direct impact on efficiency. The design is mainly based on the relevant parameters Hafei HFJ6351B through the transmission parameters of the various parts of the selection and terms designed to meet the requirements of a basic manual transmission. Research on the basic content for: transmission transmission layout program block transmission of the transmission ratio of the distribution, transmission gear selection parameters, transmission gear unit of the block distribution, design and calculation of transmission gear, transmission shaft and bearing design, the synchronization and manipulation of body and tank design, the use of Auto CAD software draw assembly drawings and parts of eight elements, such as Fig. During the design process, the main issues to be addressed are: the determination of parameters of transmission, gear transmission design, calculation and checking, transmission shaft of the design, calculation and check calculation and design of bearings, synchronization and manipulation of bodies and body the design and assembly drawings and parts mapping the top five major problems Fig.Key words: Transmission；Transmission Ratio；Parameters；Design and Calculation目 錄摘要 IAbstract II第1章 緒論 1 汽車變速器概述 1 汽車變速器設(shè)計的目的和意義 2 汽車變速器國內(nèi)外現(xiàn)狀和發(fā)展趨勢 2 變速器國內(nèi)外的現(xiàn)狀 2 汽車變速器的發(fā)展趨勢 3 手動變速器的特點和設(shè)計要求及內(nèi)容 4 手動變速器的特點 4 手動變速器的設(shè)計要求 5 設(shè)計的主要內(nèi)容 6第2章 變速器傳動機構(gòu)布置方案確定 7 設(shè)計所依據(jù)的主要技術(shù)參數(shù) 7 變速器傳動機構(gòu)的結(jié)構(gòu)分析和形式選擇 7 兩軸式變速器的特點分析 8 中間軸式變速器特點分析 9 倒擋布置方案分析 10 傳動機構(gòu)布置的其他問題 11 零部件結(jié)構(gòu)方案分析 12 齒輪形式 12 換擋機構(gòu)形式 12 防止自動脫擋的結(jié)構(gòu) 13 變速器軸承 14 本設(shè)計所采用的傳動機構(gòu)布置方案 14 本章小結(jié) 16第3章 變速器主要參數(shù)的選擇和齒數(shù)分配 17 變速器各擋傳動比的確定 17 變速器最低擋傳動比的確定 17 變速器其他各擋傳動比的確定 18 中心距的確定 19 變速器外形尺寸的初選 19 變速器齒輪參數(shù)的選擇 20 模數(shù) 20 齒形、壓力角及螺旋角 20 齒寬 21 齒頂高系數(shù) 22 變速器各擋齒輪齒數(shù)的分配 22 確定一擋齒輪的齒數(shù) 22 對中心距進行修正 24 確定常嚙合齒輪的齒數(shù) 24 確定其他各擋齒輪的齒數(shù) 26 本章小結(jié) 29第4章 變速器齒輪的設(shè)計計算 30 變速器齒輪的幾何尺寸計算 30 計算變速器各軸的扭矩和轉(zhuǎn)速 31 齒輪的強度計算和材料選擇 32 齒輪損壞的原因和形式 32 齒輪的材料選擇 33 齒輪的強度計算 34 本章小結(jié) 46第5章 變速器軸和軸承的設(shè)計計算 47 初選變速器軸的軸徑和軸長 47 軸的結(jié)構(gòu)設(shè)計 48 變速器軸的強度計算 48 齒輪和軸上的受力計算 48 軸的強度計算 50 軸的剛度計算 55 變速器軸承的選擇和校核 59 第一軸軸承的選擇和校核 59 第二軸軸承的選擇和校核 60 中間軸軸承的選擇和校核 61 本章小結(jié) 61第6章 同步器和操縱機構(gòu)的設(shè)計選用 62 同步器的設(shè)計選用 62 鎖環(huán)式同步器 63 鎖銷式同步器 64 鎖環(huán)式同步器主要尺寸的確定 65 同步器主要參數(shù)的確定 66 變速器操縱機構(gòu)的設(shè)計選用 68 變速器操縱機構(gòu)的分類 68 變速器常用操縱機構(gòu)分析 70 變速器箱體的設(shè)計 71 本章小結(jié) 72結(jié)論 73致謝 74參考文獻 75VCONTENTSAbstract IChapter 1 Introduction 1 Overview of automotive transmission 1 The purpose and significance of the automotive transmission design 2 Automotive transmission domestic and foreign situation and development trend 2 The status of the transmission at home and abroad 2 The development trend of automobile transmission 3 Manual transmission characteristics and design requirements and content 4 Manual transmission characteristic 4 The design requirements of the manual transmission 5 The main content of the design 6Chapter 2 Transmission transmission layout program to determine 7 The main technical parameters of the design is based on 7 Transmission transmission structure and form of selection 7 Analysis of characteristics of twoaxis transmission 8 Intermediate shaft transmission characteristics of 9 Reverse gear layout program analysis 10 Transmission layout other issues 11 Parts structure program analysis 12 Gear in the form 12 Shift institutional forms 12 To prevent the automatic deblock structure 13 Transmission bearings 14 This design transmission layout used in program 14 Chapter summary 16Chapter 3 Choice and number of teeth allocation of transmission parameters 17 Each block of the transmission gear ratio to determins 17 The minimum transmission gear transmission ratio 17 The other block transmission of the transmission ratio 18 The determination of center distane 19 Transmission dimensions of primaries 19 Transmission gear selection of parameters 20 Modulus 20 Tooth pressure angle and helix angle 20 Tooth width 21 Tooth top of the high coefficient 22 Transmission of each block the distribution of the gear teeth 22 Determine the number of teeth of first gear 22 Corrected to the center distance 24 To determine the constant mesh gear teeth 24 To determine the gear number of teeth 26 Chapter summary 29Chapter 4 The design of the tranmision gear 30 The geometry of the transmission gear 30 Calculate the transmission of torque and rotational speed of each axis 31 Gear strength calculations and material selection 32 The caues and forms of gear damage 32 Material selection of the gear 33 Strength calculation of gears 34 Chapter summary 46Chapter 5 Transmission shaft and bearing design calculations 47 Primary transmission axis of the shaft diameter and axial length 47 The structural design of the shaft 48 The strength of the transmission axis 48 Gear and the shaft of the force calculation 48 Axis intensity calculate 50 Shaft stiffness calculate 55 Selection and verification of the transmission bearing 59 Selection and verification of the first shaft bearing 59 Selection and verification of the second shaft bearing 60 Selection and verification of the intermediate shaft bearings 61 Chapter summary 61Chapter 6 Synchronizer and the selection of the design of the control mechanism 62 Selection with the design of synchronizer 62 Lock ring synchronizer 63 Latch synchronizer 64 Lock ring synchronizer determine the size of 65 The main parameters of the synchronizer 66 Design uses transmission control mechanism 68 Classification of transmission control agencies 68 Analysis of transmission monly used con