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本科毕业设计论文题目汽车自动调整臂的三维结构及预装配设计系别机电信息系专业机械设计制造及其自动化班级学生学号指导教师2013年04月II汽车自动调整臂的三维设计及预装配设计摘要汽车自动调整臂（简称调整臂ASA）是汽车制动系统的必备结构之一。传统的汽车自动调整臂结构复杂使用者不便操作。而本次设计的自动调整臂在结构上做了相应的调整，使得结构相对简单，而且安装高度可调，更便于安装。本结构是应用在汽车制动系统上，利用齿条和齿轮的单向可传动控制蜗轮转动以控制凸轮轴的旋转角度。主要零部件有蜗轮蜗杆配合，齿条齿轮配合，以及单向离合结构。通过其配合来实现对凸轮轴的调整，使得制动间隙保持在恒定最优间隙。本文对制动调整臂的开发原理，具体特点和使用方法做了相应介绍。关键词自动调整臂结构原理II3DdesignandpreassembleddesignofthecarautomaticallyadjuststhearmAbstractCaradjustmentarmreferredtoastheadjustmentarmASAisoneoftheessentialstructureoftheautomotivebrakingsystems.Thetraditionalautomotiveautomaticallyadjustthearmstructurecomplexuserinconvenience.Thedesignoftheautomaticadjustmentarmtodotheappropriateadjustmentsinthestructure,thestructureisrelativelysimple,andtheinstallationheightadjustable,easytoinstall.Thepresentstructureisappliedtothevehiclebrakesystem,theunidirectionaltransmissioncontrolawormwheelrotationalangleofrotationofthecamshafttocontroltheuseofarackandpinion.Themaincomponentsarewormwithrackandpinionwithonewayclutchstructure.Withthecamshaftadjustment,sothatthebrakeclearanceismaintainedataconstantoptimumgap.Correspondingdevelopmentprinciples,specificcharacteristicsanduseofthebrakeadjustmentarm.KeyWordsAutomaticSlackAdjusterStructurePrincipleIII目录1绪论.........................................................................................................................11.1开发背景.............................................................................................................11.2结构设计的意义.................................................................................................41.3开发者的主要工作.............................................................................................51.4论文的组织结构.................................................................................................62相关技术介绍......................................................................................................72.1自动调整臂介绍.................................................................................................72.1.1自动调整臂简介...........................................................................................72.1.2自动调整臂特点...........................................................................................72.1.3自动调整臂的结构.......................................................................................82.2自动调整臂工作原理介绍.................................................................................83自动调整臂的设计和实现...............................................................................93.1自动调整臂设计...............................................................................................103.1.1自动调整臂设计任务................................................................................103.1.2蜗轮蜗杆配合............................................................................................103.1.3齿轮齿条配合............................................................................................153.1.3单向离合器结构设计................................................................................183.1.4臂体设计....................................................................................................193.2自动调整臂装配...............................................................................................203.2.1调整臂内部结构装配................................................................................203.2.2调整臂总体结构装配图............................................................................213.3调整臂的安装...................................................................................................213.3.1基本传动说明............................................................................................213.3.2自动调整臂安装说明................................................................................254校核.......................................................................................................................284.1校核计划及执行情况.......................................................................................284.2核心零件校核...................................................................................................284.2.1单向离合器弹簧校核................................................................................284.2.2轴承校核....................................................................................................294.2.3蜗杆设计校核............................................................................................295建模.......................................................................................................................316结论.......................................................................................................................33IV7体会.......................................................................................................................34参考文献...................................................................................................................35致谢.......................................................................................................................36
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