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哈爾濱工業(yè)大學華德應用技術(shù)學院畢業(yè)設計
目 錄
摘要·····························································Ⅰ
Abstract ·························································Ⅱ
目錄····················································Ⅲ
第1章 緒論·····················································1
1.1概述·····················································1
1.1.1汽車變速器的設計要求···································1
1.1.2國內(nèi)外汽車變速器的發(fā)展現(xiàn)狀·····························2
1.2設計的內(nèi)容及方法·········································3
1.3設計的目的及意義·········································4
第2章變速器傳動機構(gòu)與操縱機構(gòu)的選擇與設計················5
2.1變速器傳動機構(gòu)布置方案···································5
2.1.1變速器傳動方案分析與選擇···························5
2.1.2 倒檔布置方案·······································6
2.1.3零部件結(jié)構(gòu)方案分析·····································7
2.2變速器操縱機構(gòu)布置方案···································9
2.2.1概述····················································9
2.2.2典型的操縱機構(gòu)及其鎖定裝置····························10
2.3本章小結(jié)················································12
第3章變速器的設計與計算····································13
3.1變速器主要參數(shù)的選擇····································13
3.1.1檔數(shù)···················································13
3.1.2傳動比范圍·············································13
3.1.3變速器各檔傳動比的確定································14
3.1.4中心距的選擇···········································17
3.1.5變速器的外形尺寸······································17
3.1.6齒輪參數(shù)的選擇········································17
3.1.7各檔齒輪齒數(shù)的分配及傳動比的計算······················19
3.1.8變速器齒輪的變位及齒輪螺旋角的調(diào)整····················23
3.2變速器齒輪強度校核······································25
3.2.1齒輪材料的選擇原則····································25
3.2.2變速器齒輪彎曲強度校核································25
3.3軸的結(jié)構(gòu)和尺寸設計······································30
3.4軸的強度驗算············································32
3.4.1軸的剛度計算···········································32
3.4.2軸的強度計算···········································35
3.5軸承選擇與壽命計算······································39
3.5.1輸入軸軸承的選擇與壽命計算····························39
3.5.2輸出軸軸承的選擇與壽命計算····························42
3.6本章小結(jié)················································44
第4章變速器同步器及結(jié)構(gòu)元件設計···························45
4.1同步器設計·············································45
4.1.1同步器的功用及分類································45
4.1.2慣性式同步器······································45
4.1.3鎖環(huán)式同步器主要尺寸的確定························47
4.1.4主要參數(shù)的確定····································48
4.2變速器殼體·············································50
4.3本章小結(jié)················································50
結(jié)論·····························································51
參考文獻························································52
致謝·····························································53
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