离合器设计.wps

沈阳理工大学应用技术学院课程设计汽车离合器设计赵常胜专业名称：车辆工程课程名称：汽车设计指导教师(职称)：孙飞豹（教授）、刘海涛（讲师）完成日期：2012年8月10日2012年8月沈阳理工大学应用技术学院课程设计I摘要离合器是汽车传动系中直接与发动机相连接的总成，其主要功用是切断和实现对传动系的动力传递，保证汽车起步时将发动机与传动系平顺地接合，确保汽车平稳起步；在换挡时将发动机与传动系分离，减少变速器中换挡齿轮之间的冲击；在工作中受到大的动载荷时，能限制传动系所承受的最大转矩，防止传动系各零件因过载而损坏；有效地降低传动系中的振动和噪声。本文通过对整车参数的分析，并在拆装车轻型膜片弹簧离合器及对其进行结构分析的基础上，对轿车离合器进行重新设计，使得轿车离合器设计更合理。首先对货车离合器的结构型式进行合理选择，主要是对从动盘数及干湿式的选择、压紧弹簧的结构型式及布置和从动盘的结构型式选择，并利用CAXA电子图板软件绘制轿车膜片弹簧离合器装配图；再进行离合器的基本结构尺寸和参数的选择及计算；最后进行离合器零件的结构选型及设计计算，主要是对从动盘总成设计，压盘、传力片的设计校核，膜片弹簧主要参数的选择、设计和强度校核，并绘制离合器零件图。关键词：轿车离合器；膜片弹簧；设计；校核沈阳理工大学应用技术学院课程设计IIAbstractClutchistheassemblywhichisdirectlyconnectedwithengineintheautomobilepowertrain.Anditsmainfunctionistocutofforimplementthepowertransmissioninthepowertrain.Itensuredtheengineandthepowertrainperfectlysmoothjointogetherwhentheautomobilestartingupandinsuretheautomobilesmoothstartingup.Theclutchisdisconnectedtheengineandthepowertrainwhentheautomobilestagechangeover.Itreducedtheimpactbetweentheshiftgearsofthetransmission.Whenthetransmissionworkedbythegreatdynamicload,theclutchcanlimitthebreakdowntorqueofthepowertrain,topreventtheaccessoryofthepowertraindamageduetooverload.Iteffectivelyreducedthevibrationandnoiseofthepowertrain.Inthispaper,basedontheanalysisofthecarparameters,onthebasisofdismantleandinstalldiaphragmspringclutchofsedansanditsstructuralanalysistoredesignthesedanclutchforitmakesthedesignofthecarclutchmorereasonable.First,weshouldbechoosethestructureofthecarclutchreasonable.Itismainlychoosethestructureofthedrivendiskthatwetordry,thestructureofpinchedspringandthelayout.AndImakeuseofCAXAelectronicdrawingboardsoftwaredrawtheassemblydrawingofthecarsDiaphragmspringclutch.ThanImakesurethechoiceanddesigncalculationoftheclutchstructuresizeandthebasicparameters.Finally,Icarryonthestructuretypeslectionofclutchpartsandthedesigncalculation.Itismainlydesignandcheckingthedrivendiskassembly,platenandpatchofforce.AndImakesurediaphragmspringmainparametersoftheselection,design,strengthcheckanddrawtheclutchdetaildrawing.Keywords：Carclutch;Diaphragmspring;Design;Checking沈阳理工大学应用技术学院课程设计III目录摘要....................................................................IAbstract...................................................................II第1章绪论.............................................................11.1离合器设计的基本要求..............................................11.2技术参数及论文要求................................................21.3膜片弹簧离合器结构................................................21.4膜片弹簧离合器的优点..............................................31.5膜片弹簧离合器的工作原理..........................................3第2章离合器摩擦片参数的确定........................................................................................52.1摩擦片参数的选择..................................................52.1.1初选摩擦片外径D、内径d、厚度b..............................52.1.2后备系数β.................................................52.1.3离合器传递的最大静摩擦力矩To................................62.1.4单位压力Po.................................................62.2离合器基本参数的校核..............................................72.2.1最大圆周速度................................................72.2.2单位摩擦面积传递的转矩c0T...................................72.2.3单位压力0P..................................................72.2.4单位摩擦面积滑磨功...........................................8第3章膜片弹簧的设计........................................................................................................93.1膜片弹簧的基本参数的选择.........................................93.1.1截锥高度H与板厚h比值和板厚h的选择........................93.1.2自由状态下碟簧部分大端R、小端r的选择和比值.................93.1.3膜片弹簧起始圆锥底角的选择................................93.1.4分离指数目n的选取..........................................93.1.5切槽宽度δ1、δ2及半径er.....................................93.1.6压盘加载点半径R1和支承环加载点半径r1的确定.................103.1.7膜片弹簧材料................................................10沈阳理工大学应用技术学院课程设计IV3.2膜片弹簧的弹性特性曲线...........................................10第4章扭转减振器的设计..................................................................................................124.1扭转减振器主要参数...............................................124.1.1扭转刚度k................................................124.1.2阻尼摩擦转矩Tμ.............................................134.1.3预紧转矩Tn.................................................134.1.4减振弹簧的位置半径R0.......................................134.1.5减振弹簧个数Zj.............................................134.1.6减振弹簧总压力F..........................................144.2减振弹簧的计算...................................................144.2.1减振弹簧的分布半径R1.......................................144.2.2单个减振器的工作压力P......................................144.2.3减振弹簧尺寸...............................................14第5章离合器其它主要部件的结构设计..........................................................................175.1从动盘毂的设计...................................................175.2从动片的设计.....................................................175.3离合器盖结构设计的要求：.........................................175.4压盘的设计.......................................................185.