This design task is to design a car for five manual shift transmission. Reasonable design and decorate transmission can make the engine power to get the most reasonable use of, so as to improve the dynamic performance and fuel economy cars. Variable speed transmission's main function is to change the torque and speed of numerical and direction; Operation is the main purpose of control transmission mechanism, realize the transmission ratio of the gearbox change, which realize the shift, in order to achieve the change from the speed.
This article refer to the domestic and foreign many papers, and first simply describes the mechanical transmission of the history, the status and effect of the transmission, and discussed its present situation and future development trend. And then we study the basic structure of the mechanical transmission and variable speed principle, which focus on the transmission mechanism (mainly shaft and gear) the basic structure, characteristic and work principle, mechanical transmission of each block transmission line are briefly analyzed. The articles included a large amount of calculation process, and the specific contents: the layout of transmission analysis, the transmission structure paramete determination of turning a synchronizer, the structure and the working principle, each block of the gear axis strength check, the intensity, the service life of the bearings calculations, etc.
Keywords Gear, Shaft, Synchronizer, Three axis five gear
目 錄
摘 要 I
Abstract II
第1章 緒論 1
1.1 本設(shè)計的目的和意義 1
1.2 變速器的發(fā)展 1
1.3變速器的設(shè)計要求 3
1.4設(shè)計內(nèi)容與思路 3
1.4.1設(shè)計內(nèi)容 3
1.4.2設(shè)計思路 4
1.5本章小結(jié) 4
第2章 變速器的整體結(jié)構(gòu)方案設(shè)計 5
2.1變速器傳動機(jī)構(gòu)的型式選擇與結(jié)構(gòu)分析 5
2.1.1變速器傳動方案的比較 5
2.1.2倒檔的布置方案 6
2.2本章小結(jié) 7
第3章 變速器主要參數(shù)的選擇與齒輪設(shè)計 9
3.1變速器主要參數(shù)的選擇 9
3.1.1檔位數(shù)和傳動比 9
3.1.2中心距 10
3.1.3齒輪模數(shù) 11
3.1.4壓力角α、螺旋角β和齒寬b 12
3.1.5齒輪的變位系數(shù) 13
3.2各檔傳動比及其齒輪齒數(shù)的確定 13
3.2.1確定一檔齒輪的齒數(shù) 13
3.2.2確定常嚙合齒輪副的齒數(shù) 14
3.2.3確定其他檔位的齒數(shù) 15
3.2.4確定倒檔齒輪的齒數(shù) 15
3.2.5確定齒輪輪齒尺寸 15
3.3本章小結(jié) 16
第4章 變速器齒輪的強度計算與材料選擇 17
4.1齒輪的主要失效形式 17
4.2齒輪的強度計算及材料接觸應(yīng)力 17
4.2.1齒輪彎曲強度計算 17
4.2.2齒輪材料接觸應(yīng)力 19
4.3本章小結(jié) 21
第5章 變速器軸的設(shè)計與校核 22
5.1變速器軸的結(jié)構(gòu)和尺寸 22
5.1.1軸的結(jié)構(gòu) 22
5.1.2軸的尺寸 22
5.2軸的校核 23
5.2.1第一軸的強度與剛度校核 23
5.2.2第二軸的強度與剛度校核 24
5.3本章小結(jié) 26
第6章 變速器同步器與操縱機(jī)構(gòu)的設(shè)計 27
6.1同步器設(shè)計 27
6.1.1同步器的工作原理 27
6.1.2同步環(huán)主要參數(shù)的確定 28
6.2變速器的操縱機(jī)構(gòu) 30
6.2.1操縱機(jī)構(gòu)的功用 30
6.2.2操縱機(jī)構(gòu)的設(shè)計要求 31
6.2.3變速器的換檔位置 32
6.3本章小結(jié) 32
第7章 軸承的選用與壽命計算 33
7.1 第一軸軸承選用與計算 33
7.2第二軸軸承選用與計算 33
7.3本章小結(jié) 34
結(jié) 論 41
致 謝 42
參考文獻(xiàn) 43
...
豫公網(wǎng)安備 41072402000322號
熱門關(guān)鍵詞：
