機械式變速器設(shè)計畢業(yè)論文

1、哈爾濱工業(yè)大學(xué)華德應(yīng)用技術(shù)學(xué)院畢業(yè)設(shè)計（論文） 哈爾濱工業(yè)大學(xué)華德應(yīng)用技術(shù)學(xué)院畢業(yè)設(shè)計（論文）- I -摘要變速器是汽車傳動系中的主要部件之一。變速器由變速傳動機構(gòu)和變速操縱機構(gòu)兩部分組成。變速傳動機構(gòu)的主要作用是改變轉(zhuǎn)距和轉(zhuǎn)速的數(shù)值和方向；操縱機構(gòu)的主要作用是控制傳動機構(gòu)，實現(xiàn)變速器傳動比的改變，即實現(xiàn)換擋，以達到變速變距。本題目主要進行寶馬 120i 汽車三軸六擋機械式變速器的設(shè)計，包括變速器的整體結(jié)構(gòu)和齒輪傳動部分的設(shè)計，并進行相

2、關(guān)的計算與校核。經(jīng)過設(shè)計與校核，該變速器主要結(jié)構(gòu)符合設(shè)計標準、零件強度也達到了使用要求。關(guān)鍵詞 關(guān)鍵詞：汽車機械變速器；三軸六擋；傳動比；齒輪哈爾濱工業(yè)大學(xué)華德應(yīng)用技術(shù)學(xué)院畢業(yè)設(shè)計（論文） 哈爾濱工業(yè)大學(xué)華德應(yīng)用技術(shù)學(xué)院畢業(yè)設(shè)計（論文）- III -目錄摘要···············&

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10、#183;·41.1 選題的背景及意義································

11、3;································· 4 1.2 變速器的功用和要求

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15、83;······················· 4 1.4 部分已知的主要參數(shù)··········

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17、#183;··············· 61.5 本章小結(jié)···················&

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19、;······················ 6第 2 章 機械式變速器的概述及其方案的確定··········

20、83;································72.1 變速器結(jié)構(gòu)方案的確定·

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25、;··········· 122.2 變速器主要零件結(jié)構(gòu)方案的分析······················

26、························ 132.2.1 齒輪型式··········

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32、83;·················16第 3 章 變速器主要參數(shù)的選擇與主要零件的設(shè)計···············

33、;···················· 173.1 變速器主要參數(shù)的選擇·············

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35、183;········173.1.1 擋數(shù)和傳動比·························

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37、73.1.2 中心距···································

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44、183;······· 213.2.1 確定各擋齒輪的齒數(shù)··························

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50、 3.3.2 齒輪的強度計算與校核··································

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53、1 變速器軸的結(jié)構(gòu)和尺寸··································

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56、3;············· 313.5 軸承的選擇與校核·····················

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