【正文】 大學(xué)生方程式賽車變速箱及傳動系統(tǒng)設(shè)計 摘 要 變速器是汽車傳動系中最主要的部件之一。其 設(shè)計任務(wù)是設(shè)計一臺用于FSAE 賽車上的手動變速器。 設(shè)計中選用本田 CBR600F4i 作為方程式賽車的發(fā)動機。根據(jù)發(fā)動機型號，可以得出發(fā)動機的最大轉(zhuǎn)矩、最大功率、最高轉(zhuǎn)速等參數(shù)。設(shè)計的賽車無主減速器，采用鏈傳動，且傳動比已知。根據(jù)以上參數(shù)，結(jié)合汽車設(shè)計、汽車理論、機械設(shè)計、汽車底盤設(shè)計等相關(guān)知識計算變速器的參數(shù)，并驗證變速器的合理性。 設(shè)計中利用了 CAD、 UG等軟件制作了變速器主要總成的 模型，并繪制了變速器裝配總圖及主要零件的二維圖。 通過設(shè)計，我學(xué)習(xí)和鞏固了專業(yè)課知識而且了解了不少相關(guān)專業(yè)的知識，也提高了個人能力，更重要的是鍛煉了與人協(xié)作的精神。 關(guān)鍵詞： 汽車工程；變速器；設(shè)計；手動 The Design of Formula SAE Car Gearbox and Transmission System Abstract Gearbox is the one main ponent of the vehicle duty of this design is to design a manual transmission used in the FSAE Racing car. We chose Honda CBR600F4i as the engine of FSAE Racing car. According to the engine model, we can draw the maximum engine torque, maximum power, maximum speed and other parameters. The design of the car without main gear, using chain drive, and the transmission ratio is known. Based on the above parameters, bining automotive design, automotive theory, mechanical design, automotive chassis design and other related knowledge ,calculate transmission parameters and verify the reasonableness of the transmission. Duiring design, I use CAD, UG and other softwares to produce the model of main transmission assembly , and the mapping of the transmission assembly diagram and major parts of total twodimensional diagram . By designing, I not only learn and consolidate knowledge ,understanding of a number of specialized courses related professional knowledge, but also improve the ability of individuals, but more importantly is to exercise the spirit of collaboration with others. Key Words： Automotive engineering。Transmission。Design。Manual 目 錄 摘 要 ............................................................................................................................... i Abstract ..........................................................................................................................ii 第一章 緒論 .................................................................................................................. 1 課題研究背景 .................................................................................................. 1 課題研究意義 .................................................................................................. 1 本課題研究的現(xiàn)狀及發(fā)展 .............................................................................. 2 本章小結(jié) .......................................................................................................... 3 第二章 變速器傳動機構(gòu)布置方案 ............................................................................ 3 變速器概述 ...................................................................................................... 3 變速器傳動機構(gòu)布置方案 .............................................................................. 4 本章總結(jié) ........................................................................................................... 5 第三章 變速器主要參數(shù)的選擇 .................................................................................. 5 . 變速器擋數(shù)的選擇及各擋傳動比的確定 ..................................................... 5 ..................................................................................... 5 ..................................................................................... 5 ............................................................................................................... 6 ........................................................................................... 7 ........................................................................................................... 7 齒輪模數(shù) ................................................................................................. 7 壓力角 ..................................................................................................... 8 螺旋角 ..................................................................................................... 8 齒寬計算 ................................................................................................. 8 齒輪變?yōu)橄禂?shù)的選擇原則 ..................................................................... 9 齒頂高系數(shù) ............................................................................................. 9 各擋齒輪齒數(shù)的分配 ..................................................................................... 10 確定 1 擋齒輪的齒數(shù) ........................................................................... 10 對中心距 A 進行修正 .......................................................................... 11 確定常嚙合傳動齒輪齒輪副的齒數(shù) ................................................... 11 修正螺旋角的值 ................................................................................... 11 確定其它各擋的齒數(shù) ........................................................................... 11 變速器齒輪的幾何尺寸計算 ......................................................................... 13 直齒圓柱齒輪的幾何尺寸計算 ........................................................... 13 斜齒圓柱齒輪的幾何尺寸計算 ........................................................... 14 根據(jù)以上公式計算各齒輪參數(shù) ........................................................... 15 變速器輪齒強度計算 ..................................................................................... 17 變速器齒輪的材料及熱處理 ............................................................... 17 計算變速器各軸所傳遞的轉(zhuǎn)矩 ........................................................... 17 輪齒強度計算 ....................................................................................... 18 本章小結(jié) ......................................................................................................... 24 第四章變速器軸設(shè)計計算 .......................................................................................... 24 軸的功用及要求 ............................................................................................. 24 軸的結(jié)構(gòu)形狀 ..................................