武汉理工大学毕业设计本科毕业设计（论文）
题目186F曲轴的设计与
校核计算
姓名
专业
学号
指导教师
**学院车辆与交通工程系
二○一四年五月
目录
摘要 ............................................................................................................................................... I Abstract ......................................................................................................................................... II 1 绪论.. (1)
1.1 研究背景 (1)
1.2 国内外的研究现状与发展趋势 (1)
1.2.1 曲轴结构设计的发展 (2)
1.2.2 曲轴强度计算发展 (2)
1.3 零件分析 (3)
1.4 零件的作用 (3)
1.5 186F柴油机曲轴的设计目的 (3)
1.5.1 毕业设计的目的 (3)
1.5.2 186F柴油机的基本参数 (4)
2 曲轴的工作条件、结构型式和材料的选择 (5)
2.1 曲轴的工作条件和设计要求 (5)
2.2 曲轴的材料 (6)
2.3 曲轴结构型式的选择 (6)
2.4 曲轴强化的方法 (6)
3 曲轴主要尺寸的确定和结构细节设计 (8)
3.1 曲轴 (8)
3.1.1 曲轴简述 (8)
3.1.2 曲轴设计 (9)
3.2 曲柄 (12)
3.2.1 曲柄简述 (12)
3.2.2 曲柄设计 (13)
3.3 飞轮 (13)
3.3.1飞轮的简述 (13)
3.3.2飞轮的设计 (14)
4 柴油机曲轴的校核计算 (15)
4.1 曲轴的校核 (15)
4.2 曲轴的疲劳强度的计算 (15)
总结 (19)
致谢 (20)
参考文献 (21)
186F曲轴的设计与校核计算
摘要
曲轴是柴油发动机的重要零件。它的作用是把活塞的往复直线运动变成旋转运动，将作用在活塞的气体压力变成扭矩，用来驱动工作机械和柴油发动机各辅助系统进行工作。曲轴在工作时承受着不断变化的压力、惯性力和它们的力矩作用，因此要求曲轴具有强度高、刚度大、耐磨性好，轴颈表面加工尺寸精确，且润滑可靠。
本文主要分为四个部分：第一部分为本文的开篇，即绪论部分，主要介绍柴油机、曲轴，对国内外研究现状进行综述和评价。第二部分主要介绍了柴油机曲轴的工作条件、结构型式和材料的选择。第三部分是柴油机主要部件的设计。第四部分以186F柴油机为例，通过查阅内燃机设计手册，对内燃机的曲轴运动部件做了校核。最后，为本次毕业设计的总结，优缺点等。
本设计是根据被加工曲轴的技术要求，进行机械零件设计，然后根据内燃机设计的基本原理和方法，拟定曲轴设计方案，完成结构设计。主要工作有：绘制产品零件图，了解零件的结构特点和技术要求；绘制装配总图和主要零件图。
关键词：内燃机；发动机；曲轴；设计
（此毕业设计获得
2013届优秀毕业设计荣誉，有完整的零件图，装配图
，并且有开题报告、外文翻译，保证让你的毕业设计顺利过关！先找份好的工作，不再为毕业设计而发愁！！！有需要零件图和装配图的同学请联系QQ：994166684）
186F DESIGNAND CHECKING
CALCULATION OF CRANKSHAFT
Abstract
The crankshaft is one of the important parts of diesel engine. Its role is to put the piston reciprocating linear motion into rotary motion and the effect on piston gas pressure become torque, used to drive machinery and diesel engines each auxiliary system to work. Crankshaft under changing pressure at work, the inertial force and their moment, therefore requires the crankshaft has high strength, stiffness big, wearability, shaft neck surface processing size accurate, reliable and lubrication.
This paper is divided into four main parts: the first part of this article, namely the introduction part, mainly introduces the diesel engine, the crankshaft, the research status at home and abroad were reviewed and summarized and evaluated. The second part mainly introduces the working conditions of the diesel engine crankshaft, structural type and material selection. The third part is the design of main parts of a diesel engine. The fourth part with 186 f diesel engine as an example, through the consult internal combustion engine design manual, the internal combustion engine crankshaft did check the moving parts. As the summary of this graduation design, advantages and disadvantages, etc.
This design is according to the technical requirements of the processing of the crankshaft, the mechanical parts design, and then according to the basic principle and method of internal combustion engine design, proposed design of crankshaft, complete structure design. Main work includes: map parts, understand the components of the structure features and technical requirements; Mapping the general layout and main assembly parts.
Keywerds: internal combustion engine;engine;crankshaft;design
