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离合器是汽车传动系中直接与发动机和变速箱连接的独立总成，其主要功用是切断或实现对传动系的动力传递，保证汽车平稳起步；降低振动和噪声；防止传动系零件过载等。离合器的性能极大地影响着汽车整体性能。本文通过对选定车型整车参数的分析，按传统摩擦式离合器设计方法为其设计了一款单片推式膜片弹簧离合器。首先选定了离合器的基本结构类型，然后根据经验选定其基本参数，再根据基本参数对其各零部件的具体结构尺寸进行详细的设计与校核,重点有扭转减振器的设计校核，膜片弹簧的设计校核，最后用 AutoCAD进行总装配图和各零件图的绘制。42422
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毕业论文关键词： 膜片弹簧离合器 扭转减振器 膜片弹簧 CAD 装配图
Title Clutch design of mini car
Abstract Clutch is an independent assembly in automotive transmission system which isdirectly connected with the engine and gearbox, its main functions are to cut offor realize the power transmission of transmission system, ensure the car a smoothstart; to reduce vibration and noise; to prevent the transmission parts overload.The performance of clutch greatly affects the overall performance of the car.In this paper,by analyzing the parameters of the selected vehicle, a monolithicpush type diaphragm spring clutch is designed for the car according to thetraditional design methods of friction clutch. At first,the basic structure typeof the clutch is selected, then the basic parameters of the clutch is selectedon the basis of experience, next the structure and size of its all parts is designedand checked in detail. The key points are the design and check of the torsionalvibration damper and the diaphragm spring. In the end the general assembly drawingand other part drawings are drew by Auto CAD.
Keywords Diaphragm spring clutch Torsional vibration damper Diaphragm springCAD Assembly drawing
目次
1绪论1
1.1课题的研究背景及意义.1
1.3研究内容.2
2离合器结构方案选择3
2.1离合器设计要求3
2.2离合器主要零部件结构形式选择.3
2.2.1从动盘数的选择.3
2.2.2压紧弹簧结构形式的选择.3
2.2.3压紧弹簧布置方式的选择.5
2.2.4膜片弹簧支承形式的选择.5
2.2.5压盘驱动方式的选择.6
2.2.6分离轴承类型的选择.6
2.2.7离合器的通风散热措施.6
2.3本章小结.7
3离合器基本参数的确定8
3.1摩擦片外径D、内径d、厚度b的确定8
3.2离合器后备系数β的确定.9
3.3摩擦片单位压力P的确定.10
3.4离合器基本参数的优化校核.10
3.5本章小结.12
4离合器从动盘设计13
4.1从动盘的结构13
4.2从动盘设计要求13
4.3从动片的设计14
4.4从动盘毂的设计15
4.5摩擦片的选取16
4.6摩擦片与从动片的紧固方式.16
4.7扭转减振器的设计17
4.7.1扭转减振器的结构.17
4.7.2扭转减振器参数设计.17
4.7.3扭转减振器弹簧校核.20
4.8本章小结.21
5膜片弹簧的设计.22
5.1膜片弹簧设计思路22
5.2膜片弹簧的结构特点22
5.3膜片弹簧的加载方式22
5.4膜片弹簧的弹性变形特性.23
5.5膜片弹簧尺寸参数的选取.24
5.6膜片弹簧材料的选择25
5.7膜片弹簧工作点的选取.25
5.8膜片弹簧参数优化校核.28
5.9膜片弹簧的强度校核29
5.10本章小结.30
6离合器其他零部件的设计31
6.1压盘的设计31
6.1.1压盘传力方式的选择.31
6.1.2压盘尺寸参数的确定.31