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1、沈阳理工大学学士学位论文摘 要轿车的设计与生产涉及到了很多的领域，其安全性、经济性、动力性的相关指标，对设计提出了较高要求。轿车制动系统是轿车正常行驶的重要主动安全系统，其性能的好坏对轿车的正常行驶安全有着重要影响。伴随着轿车行驶速度和路面复杂程度的变化，迫切需要更高性能的制动器。由于制动系统的重要性，本次设计的主要目的是轿车制动器的结构类型设计。本文从制动系统的作用和设计的要求出发，对各种样式制动器的优缺点进行了比较，并依据已给的设计参数，进行方案分析验证及校核。得出，轿车的前后轮均采用浮钳盘式制动器。在此基础上，选择了真空助力式伺服制动系统和双管路系统，选用了间隙自动调节装置。依据设计和计
2、算出的数据，分别用AUTO CAD和CATIA软件绘制出了该制动器的二维图和三维建模。关键词： 制动器；设计；建模ABSTRACTThe design and production of cars involved a lot of fields, the safety, economy and power of the relevant indicators, the design of a higher demand. Car braking system is an important active safety system, and its performance has impor
3、tant influence on the normal running safety of the car. Along with the change of the speed of the car and the complexity of the road surface, it is urgent to need a better performance of the brake. Due to the importance of the braking system, the main purpose of this design is to design the structur
4、e type of the car brake. In this paper, the advantages and disadvantages of various styles of brake are compared, based on the function and design requirements of the braking system, and the design parameters are given. It is concluded that the floating caliper disc brake is used in the front and ba
5、ck wheels of the car. On this basis, the selection of vacuum assisted brake servo system and dual system, use the automatic clearance adjustment device. According to the design and calculation of the data, respectively, using CAD AUTO and CATIA software to draw the two-dimensional map and three-dime
6、nsional modeling of the brake.Key words: brake; design; modeling 目录摘 要.I1 绪论.11.1课题研究的目的及意义.11.2轿车制动器的发展状况.12 研究课题简介.32.1课题主要内容.32.2课题研究方案.32.3本章小结.43 制动器的结构形式.53.1制动系统的基本概念.53.2鼓式制动器结构形式简介.63.3盘式制动器结构形式简介.83.4盘式制动器的优缺点.93.5该轿车制动器结构的最终选择.93.6本章小结.104 制动器主要参数及其选择.114.1制动力与制动力分配系数. 114.2同步附着系数.154.3制动
7、强度和附着系数利用率.164.4制动器最大制动力矩.174.5制动器因数.184.6盘式制动器主要参数的确定.194.7本章小结.205 制动器的设计计算.215.1摩擦衬块的磨损特性计算.215.2制动器的热容量和温升核算.225.3盘式制动器制动力矩的计算.235.4驻车制动计算.245.5本章小结.256 制动器主要零部件的结构设计.266.1制动盘.266.2制动钳.266.3制动块.276.4摩擦材料.276.5制动轮缸.286.6制动器间隙.286.7本章小结.297 制动驱动机构的结构形式选择与设计计算.307.1 制动驱动机构的结构型式选择.307.2 制动管路的多回路系统.327.3 液压制动驱动机构的设计计算.337.3.1制动轮缸直径与工作容积.337.3.2制动主缸直径与工作容积.347.3.3制动踏板力与踏板行程.357.3.4制动主缸.367.4 本章小结.368 CATIA建模.378.1CATIA软件.378.2绘制的主要CATIA零件图.38结 论.40参考文献.41致 谢.
