PAGE\*MERGEFORMATIV摘要汽车离合器位于发动机和变速箱之间的飞轮壳内，用螺钉将离合器总成固定在飞轮的后平面上，离合器的输出轴就是变速箱的输入轴。在汽车行驶过程中，驾驶员可根据需要踩下或松开离合器踏板，使发动机与变速箱暂时分离和逐渐接合，以切断或传递发动机向变速器输入的动力。其功用为：（1）使汽车平稳起步；（2）中断给传动系的动力，配合换档；（3）防止传动系过载。膜片弹簧离合器是近年来在轿车和轻型汽车上广泛采用的一种离合器，它的转矩容量大而且较稳定，操作轻便，平衡性好，也能大量生产，对于它的研究已经变得越来越重要。此设计说明书详细的说明了轻型汽车膜片弹簧离合器的结构形式，参数选择以及计算过程。本设计主要针对宝马325im的离合器进行设计计算。关键词:离合器、膜片弹簧、从动盘、中间盘、压盘、摩擦片AbstractAutomobileClutchintheengineandgearboxbetweentheflywheelshell,withscrewwillbefixedintheclutchassemblyaftertheplaneoftheflywheel,clutchgearboxoutputshaftistheinputshaft。Intheprocessofmovingvehicle,thedrivermayneedPedalorreleasetheclutchpedalsothattheengineandgearboxtemporaryseparationandprogressivejoint,tocutofftheengineortransmissiontothetransmissioninputpower.Itsfunctionas:(1)thecarasmoothstart,(2)tointerruptthetransmissionofpowertomeettheshift,(3)topreventtransmissionoftheoverload.InrecentyearsthecaspringclutchisakindofclutchthatwidelyAdoptedinvehicleandlightvehicle.IthasgreatcapacityoftorqueAndmorestabley,manipulateeasyandconvenient,wellequilibrium,Andalsocanproducebatch.sotheresearchoftheclutchismoreandmoreimportant.Thisdesignmanualelaboratedontheconstructionform,parametrechooseandprocessofcalculateofthelightvehicle.ThisdesignismainlyfortheclutchoftheBMW325im.Keywords:clutch、thecaspring、HYPERLINK"app:ds:driven"drivenHYPERLINK"app:ds:disc"disc、pressureplate、themiddleplate、frictiondisc目录TOC\o"1-3"\u摘要PAGEREF_Toc357101464\hIAbstractPAGEREF_Toc357101465\hII绪论PAGEREF_Toc357101466\h1第1章概述PAGEREF_Toc357101467\h2第2章离合器结构方案选取PAGEREF_Toc357101468\h42.1给定参数和结构设计要求PAGEREF_Toc357101469\h42.2结构设计PAGEREF_Toc357101470\h42.2.1从动盘数选取PAGEREF_Toc357101471\h42.2.2压紧弹簧的结构形式及布置PAGEREF_Toc357101472\h42.2.3压盘和中间盘的驱动方式PAGEREF_Toc357101473\h62.2.4分离轴承的类型PAGEREF_Toc357101474\h72.2.5离合器的通风散热措施PAGEREF_Toc357101475\h8第3章离合器基本结构参数的确定及优化PAGEREF_Toc357101476\h93.1后备系数的选择PAGEREF_Toc357101477\h93.2摩擦因数f的选择PAGERE