轿车离合器设计

车辆工程专业毕业论文，论文编号:JX891  论文字数:13215.页数:29  此题目另有全套版，售价148元。

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。
 本文通过对桑塔纳2000整车参数的分析，并在拆装桑塔纳2000轿车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。首先对轿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

Abstract
　 Clutch is the assembly which is directly connected with engine in the automobile power train. And its main function is to cut off or implement the power transmission in the power train. It ensured the engine and the power train perfectly smooth join together when the automobile starting up and insure the automobile smooth starting up. The clutch is disconnected the engine and the power train when the automobile stage changeover. It reduced the impact between the shift gears of the transmission. When the transmission worked by the great dynamic load, the clutch can limit the breakdown torque of the power train, to prevent the accessory of the power train damage due to overload. It effectively reduced the vibration and noise of the power train.
 In this paper, based on the analysis of the Santana 2000 car parameters, on the basis of dismantle and install diaphragm spring clutch of Santana 2000 sedans and its structural analysis to redesign the sedan clutch for it makes the design of the car clutch more reasonable. First, we should be choose the structure of the car clutch reasonable. It is mainly choose the structure of the driven disk that wet or dry, the structure of pinched spring and the layout. And I make use of CAXA electronic drawing board software draw the assembly drawing of the cars Diaphragm spring clutch. Than I make sure the choice and design calculation of the clutch structure size and the basic parameters. Finally, I carry on the structure type slection of clutch parts and the design calculation. It is mainly design and checking the driven disk assembly, platen and patch of force. And I make sure diaphragm spring main parameters of the selection, design, strength check and draw the clutch detail drawing.
 
Keywords：Car clutch;  Diaphragm spring;  Design;  Checking

目  录
中文摘要 i
英文摘要 ii
目录 iii
第一章     绪论 1
 1.1  研究动机与目的 1
 1.2  研究背景 1
 1.3  研究方法与系统描述 2
 1.4  论文內容概述 2
第二章     轿车离合器的结构型式选择 4
 2.1   从动盘数及干、湿式的结构型式 4
2.1.1  单片干式摩擦离合器 4
2.1.2  双片干式摩擦离合器 4
2.1.3  多片湿式离合器 4
 2.2   压紧弹簧的结构型式及布置 5
2.2.1  周置弹簧离合器 5
2.2.2  中央弹簧离合器 5
2.2.3  斜置弹簧离合器 5
2.2.4  膜片弹簧离合器 6
 2.3   从动盘的结构型式 7
 2.4   所选离合器的结构型式 8
第三章     离合器基本参数的确定 9
 3.1   离合器后备系数 9
 3.2   单位压力 10
 3.3   摩擦片外径、内径和厚度 10
 3.4   所选离合器基本参数的确定 11
第四章     离合器零件的结构选型及设计计算 13
 4.1   从动盘总成设计 13
 4.2   离合器盖总成设计 14
4.2.1  离合器盖设计 14
4.2.2  压盘设计 14
 4.3   膜片弹簧设计 17
4.3.1  膜片弹簧主要参数的选择 17
4.3.2  绘制膜片弹簧的特性曲线 19
4.3.3  确定膜片弹簧的工作点位置 20
4.3.4  求离合器彻底分离时分离轴承作用的载荷 21
4.3.5  求分离轴承的行程 21
4.3.6  膜片弹簧强度校核 22
4.3.6  膜片弹簧材料及制造工艺 22
第五章     结论 23
参考文献 24
致谢 25