Benz-E280轎車五檔變速器(三軸式)

論文編號:JX1532  論文字?jǐn)?shù):14301.頁數(shù):49  附任務(wù)書，開題報(bào)告，外文翻譯，CAD圖，答辯PPT

Benz E280型轎車三軸式五檔變速器設(shè)計(jì)
【摘要】本設(shè)計(jì)的任務(wù)是設(shè)計(jì)一臺用于Benz-E280轎車上的FR式的手動(dòng)變速器。本設(shè)計(jì)采用中間軸式變速器，該變速器具有兩個(gè)突出的優(yōu)點(diǎn)：一是其直接檔的傳動(dòng)效率高，磨損及噪聲也最小；二是在齒輪中心距較小的情況下仍然可以獲得較大的一檔傳動(dòng)比。                 
根據(jù)汽車的外形、輪距、軸距、最小離地間隙、最小轉(zhuǎn)彎半徑、車輛重量、滿載重量以及最高車速等參數(shù)結(jié)合自己選擇的適合于該奔馳車的發(fā)動(dòng)機(jī)型號可以得出發(fā)動(dòng)機(jī)的最大功率、最大扭矩、排量等重要的參數(shù)。再結(jié)合某些奔馳車的基本參數(shù)，選擇適當(dāng)?shù)闹鳒p速比。根據(jù)上述參數(shù)，再結(jié)合汽車設(shè)計(jì)、汽車?yán)碚摗�機(jī)械設(shè)計(jì)等相關(guān)知識，計(jì)算出相關(guān)的變速器參數(shù)并論證設(shè)計(jì)的合理性。
它功用是：①改變傳動(dòng)比，擴(kuò)大驅(qū)動(dòng)輪轉(zhuǎn)矩和轉(zhuǎn)速的變化范圍，以適應(yīng)經(jīng)常變化的行駛條件，如起步、加速、上坡等，同時(shí)使發(fā)動(dòng)機(jī)在有利的工況下工作；②在發(fā)動(dòng)機(jī)旋轉(zhuǎn)方向不變的前提下，使汽車能倒退行駛；③利用空檔，中斷動(dòng)力傳遞，以使發(fā)動(dòng)機(jī)能夠起動(dòng)、怠速，并便于發(fā)動(dòng)機(jī)換檔或進(jìn)行動(dòng)力輸出。這臺變速器具有五個(gè)前進(jìn)檔（包括一個(gè)超速檔五檔）和一個(gè)倒檔，并通過鎖環(huán)式同步器來實(shí)現(xiàn)換檔。

【關(guān)鍵詞】變速器；鎖環(huán)式同步器；傳動(dòng)比；中間軸

The Five-gear Transmission of Benz-E280

[Abstract] The duty of this design is to design a FR type manual transmission used in the Benz-E280, It’s the countershaft-type transmission gearbox. This transmission has two prominent merits: Firstly, the transmission efficiency of the direct drive keeps off high, the attrition and the noise are also slightest; Secondly, it’s allowed to obtain in the bigger gear ratio of the first gear when the center distance is smaller.
According to the contour, track, wheel base, the smallest ground clearance, the smallest turning radium, the vehicles weight, the all-up weight as well as the highest speed and so on, union the choosing engine model we can obtain the important parameters of the max power, the max torque, the displacement and so on. According to the basic parameters of the certain Benz-E280, choose the suitable final drive ratio. According to the above parameters, combining the knowledge of automobile design, automobile theory, machine design and so on, calculate the correlated parameters of the gearbox and proof the rationality of the design.
Its function is: ①Changing gear ratio, expanding the torque of the driving wheel and the range of the rotational speed, to adapt the travel condition which frequently changes, like start, acceleration, climbing and so on, simultaneously causes the engine to work under the advantageous operating mode; ②Under the premise of the invariable rotation, enables the automobile to travel back; ③Using neutral, severances the power transmission, to make the engine start, idle, and is advantageous for the engine to shift gears or to carry on the dynamic output. This gearbox has five (including over drive-fifth gear) and a reverse gear, and through the inertial type of synchronizer to realize shift gears.

[Keyword] transmission; inertial type of synchronizer; gear ratio; countersh

目   錄

畢業(yè)設(shè)計(jì)（論文）任務(wù)書 Ⅰ
開題報(bào)告 Ⅱ
指導(dǎo)教師審查意見 Ⅲ
評閱老師評語 Ⅳ
答辯會議記錄 Ⅴ
中文摘要 Ⅵ
外文摘要 Ⅶ
1 前言 1
1.1 手動(dòng)變速器（MT） 2
2 變速器的構(gòu)造 4
2.1 傳動(dòng)示意圖 4
2.2 主要結(jié)構(gòu)說明 4
3 設(shè)計(jì)參數(shù) 7
3.1 傳遞功率或扭矩 7
3.2 初定各檔傳動(dòng)比 7
4 變速器的主要參數(shù) 8
4.1 中心距A的初算與確定 8
4.2 變速器的總體軸向尺寸的初算與確定 8
4.3 齒輪參數(shù)（模數(shù)，齒數(shù)，壓力角等）的初算與確定 8
5 各檔齒輪的幾何尺寸計(jì)算 13
5.1 輸入軸與中間軸常嚙合齒輪 13
5.2 一檔齒輪 14
5.3 二檔齒輪 16
5.4 三檔齒輪 18
5.5 四檔齒輪 19
5.6 倒檔齒輪 21
5.7 倒檔中間齒輪 22
6 各檔齒輪的強(qiáng)度計(jì)算 24
6.1第一檔齒輪強(qiáng)度計(jì)算 24
6.2 第二檔齒輪強(qiáng)度計(jì)算 26
6.3 第三檔齒輪強(qiáng)度計(jì)算 29
6.4 第四檔齒輪強(qiáng)度計(jì)算 31
7 軸的設(shè)計(jì)及強(qiáng)度計(jì)算 35
7.1 輸出軸的設(shè)計(jì)及強(qiáng)度計(jì)算 35
7.2 中間軸的設(shè)計(jì)及強(qiáng)度計(jì)算 37
7.3 入軸的設(shè)計(jì)及強(qiáng)度計(jì)算 39
8 滾動(dòng)軸承的壽命計(jì)算 42
8.1輸出軸軸承壽命計(jì)算（以一檔為例） 42
8.2中間軸承壽命計(jì)算（以一檔為例） 43
8.3輸入軸軸承壽命計(jì)算（以一檔為例） 44
參考文獻(xiàn) 46
致    謝 47