汽車轉(zhuǎn)向器畢業(yè)設(shè)計(jì)說明書.doc

摘要汽車轉(zhuǎn)向器是汽車的重要組成部分，也是決定汽車主動(dòng)安全性的關(guān)鍵總成，它的質(zhì)量嚴(yán)重影響汽車的操縱穩(wěn)定性。隨著汽車工業(yè)的發(fā)展，汽車轉(zhuǎn)向器也在不斷的得到改進(jìn)，雖然電子轉(zhuǎn)向器已開始應(yīng)用，但機(jī)械式轉(zhuǎn)向器仍然廣泛地被世界各國(guó)汽車及汽車零部件生產(chǎn)廠商所采用。而在機(jī)械式轉(zhuǎn)向器中，循環(huán)球齒條-齒扇式轉(zhuǎn)向器由于其自身的特點(diǎn)被廣泛應(yīng)用于各級(jí)各類汽車上。本文選擇GX1608A型循環(huán)球齒條-齒扇式轉(zhuǎn)向器作為研究課題，其主要內(nèi)容有：汽車轉(zhuǎn)向器的組成分類；轉(zhuǎn)向器總成方案分析及其數(shù)據(jù)確定和轉(zhuǎn)向器的設(shè)計(jì)過程。這種轉(zhuǎn)向器的優(yōu)點(diǎn)是，操縱輕便，磨損小，壽命長(zhǎng)。缺點(diǎn)是結(jié)構(gòu)復(fù)雜，成本高，轉(zhuǎn)向靈敏度不如齒輪齒條式。因此逐漸被齒輪齒條式取代。但隨著動(dòng)力轉(zhuǎn)向的應(yīng)用，循環(huán)球式轉(zhuǎn)向器近年來(lái)又得到廣泛使用。關(guān)鍵詞；轉(zhuǎn)向器操縱穩(wěn)定性循環(huán)球齒條-齒扇式轉(zhuǎn)向器AbstractGearcarsanimportantcomponentoftheinitiativeisdecidedautomobilesafetyofthekeyassembly,Itseriouslyaffectedthequalityofthevehiclehandlingandstability.Alongwiththedevelopmentoftheautoindustry,automobilesteeringgeariscontinuouslyimproved,althoughtheelectronicsteeringgearhasbeguntouseButmechanicalsteeringgearisstillwidelybeenworldmotorvehiclesandpartsmanufacturersadopted.Andthemechanicalsteeringgear,Rackcycleball-typesteeringgeartoothfansasitsowncharacteristicshasbeenwidelyusedinvarioustypesvehicles.ThegraduationdesignoptionsGX1608Acyclegearball-typesteeringgearrackasaresearchtopic,Itsmaincontentsare:automotivesteeringgearcomponentsclassification；assemblywastoprogramanalysisanddatatoidentifyandsteeringgeardesignprocess.Theadvantageofsuchsteeringgear,andmanipulatinglight,wearandtear,longlife.Thedisadvantageisthatthestructureiscomplicatedandcostly,thansteeringrackandpinionsensitivity.Thereforegraduallybeingreplacedbyrackandpinion.However,withthepowersteeringapplications,theball-typesteeringgearcycleandarewidelyusedinrecentyears.Keywords；DiverterBallhandlingandstabilityCyclerack-typesteeringgeardiverter目錄摘要.IAbstract.II1緒論.12汽車轉(zhuǎn)向系的組成及分類.32.1汽車轉(zhuǎn)向系的類型和組成.32.1.1機(jī)械式轉(zhuǎn)向系.62.1.2動(dòng)力轉(zhuǎn)向器.72.2轉(zhuǎn)向系主要性能參數(shù).82.2.1轉(zhuǎn)向器的效率.82.2.2傳動(dòng)比的變化特性.102.2.3轉(zhuǎn)向盤自由行程.132.3轉(zhuǎn)向操縱機(jī)構(gòu)及轉(zhuǎn)向傳動(dòng)機(jī)構(gòu).132.3.1轉(zhuǎn)向操縱機(jī)構(gòu).132.3.2轉(zhuǎn)向傳動(dòng)機(jī)構(gòu).143轉(zhuǎn)向器總成方案分析.153.1轉(zhuǎn)向器設(shè)計(jì)要求.153.2轉(zhuǎn)向器總成方案設(shè)計(jì).164循環(huán)球式轉(zhuǎn)向器主要尺寸參數(shù)的選擇.195轉(zhuǎn)向器輸出力矩的確定.236軸的設(shè)計(jì)計(jì)算及校核.246.1轉(zhuǎn)向搖臂軸（即齒形齒扇軸）的設(shè)計(jì)計(jì)算.246.1.1材料的選擇.246.1.2結(jié)構(gòu)設(shè)計(jì).246.1.3軸的設(shè)計(jì)計(jì)算.246.2