基于UG NX小型轿车鼓式制动器设计与运动仿真.doc

本科毕业设计（论文） 题目：基于UG NX小型轿车鼓式制动 器设计与运动仿真 PAGE PAGE II 基于UG NX的小型轿车鼓式制动器设计与运动仿真 摘 要 近年来我国汽车市场迅速发展，特别是轿车汽车发展的方向。然而随着汽车保有量的增加，带来的安全问题也越来越引起人们的注意，而制动系统则是汽车主动安全的重要系统之一。本设计就领从蹄式鼓式制动器进行了相关的设计和计算，并根据UG三维软件进行设计装配及仿真。 本说明书主要介绍了捷达轿车后轮鼓式制动系统的设计。首先介绍了汽车制动系统的发展、结构、分类，并对鼓式制动器和盘式制动器的结构及优缺点进行分析。设计计算确定前盘、后鼓式制动器、制动主缸的主要尺寸和结构形式。绘制出了后制动器装配图、制动鼓零件图以及制动蹄零件图。最终对设计出的制动系统的各项指标进行评价分析。另外在设计的同时考虑了其结构简单、工作可靠、成本低等因素。 通过本次设计的计算结果表明设计出的制动系统是合理的、符合标准的。其满足结构简单、成本低、工作可靠等要求。 关键词：UG软件；仿真；制动；鼓式制动器 UG NX Compact Sedan Based Drum Brake Design and Motion Simulation Abstract In recent years the rapid development of Chinas auto market, especially cars car development. However, with the increase in car ownership, safety problems are increasingly attracted attention, and the braking system is an important vehicle active safety systems in the world. The design on the collar from the shoe drum brake design and calculation of, and in accordance with UG three-dimensional software design assembly and simulation. This manual describes the Jetta sedan rear drum brake system design. The first describes the development of automotive braking systems, structure, classification, and by drum brakes and disc brakes on the structure and analyze the advantages and disadvantages. Design calculations to determine the front disk, rear drum brakes,brake master cylinder of the main dimensions and structure. Drawn out of the rear brake assembly diagram, brake drum and brake shoe parts diagram parts chart. End of the braking system designed to evaluate the analysis of the indicators. Also taking into account in the design of its structure is simple, reliable, low cost factor. Through this design results show that the design of the braking system is reasonable, standards-compliant. Meet its simple structure, low cost, reliable requirements. Key Words: UG software；Simulation；Braking；Brake drum 主要符号表 P 张开力 N 法向反力 Q 推力 m 质量 Φ 同步附着系数 q 制动强度 T