设计描述：

文档包括:
word说明书一份，共42页，约14000字
任务书一份
开题报告一份
外文翻译一份

CAD版本图纸，共6张

摘  要
机械加工行业作为一个传统而富有活力的行业，近十几年取得了突飞猛进的发展，在新经济时代，行业呈现了

新的发展趋势，由此对其它的质量，性能要求有了新的变化。现在机械加工行业发生着结构性变化，工艺工装

的设计与改良已成为企业生存和发展的必要条件，工艺工装的设计与改良直接影响加工产品的质量与性能。 
本文首先介绍了气门摇臂轴支座的作用和工艺分析，其次确定毛坯尺寸，然后进行了工艺规程设计，最后进行

夹具设计。此次设计是对气门摇臂轴支座的加工工艺和夹具设计，其零件为铸件，具有体积小，零件结构简单

的特点，由于面比孔易加工，在制定工艺规程时，就先加工面，再以面为基准来加工其它，其中各工序夹具都

采用专用夹具，其机构设计简单，方便且能满足要求。

关键词：气门摇臂轴支座；工艺分析 ；工艺规程设计 ；夹具设计

Abstract

Machining industry ,as a traditional and vibrant industry, has been rapidly developed for a few

past decades. In the new economic area,the industry presented a new development trend,and the

trends also changes the quality and the performance of the production in some new abstracts.

Machining industry is now taking place in structural changes, process design and improvement of

equipment has become the necessary conditions of the enterprise survival and development, process

equipment design and improved products directly affect the quality and performance.
   This article introduces the role and process analysis of the valve rocker arm bearing

support,followed by determining blank size, and then proceed to order the design process, the

final fixture design. What will be disgned is The machining process and fixture design of the

Valve Rocker Arm Bearing support,which has the chatacteristics of three abstrcat.its components

for castings, with a small size, simple structure and the characteristics of parts,because the

surface is easier than the easy processing, point of order in the development process, the

surface on the first processing , and then to surface as a benchmark to other processing,

including the processes used special fixture, and its design is simple, convenient and can meet

the requirements.

Key words: JPEG; discrete cosine transform; MATLAB; graphical user interface

 
目  录
摘  要 III
ABSTRACT IV
目  录 V
1 绪论 1
1.1本课题的研究内容和意义 1
1.2国内外的发展概况 1
1.3本课题应达到的要求 2
2 气门摇臂轴支座主要结构的机械设计 3
2.1.零件的工艺分析及生产类型的确定 3
2.1.1零件的作用 3
2.1.2 零件的工艺分析 3
2.1.3 确定零件的生产类型 4
2.2 选择毛坯种类，绘制毛坯图 5
2.2.1 选择毛坯种类 5
2.2.2 确定毛坯尺寸及机械加工总余量 5
2.2.3 设计毛坯图 6
2.2.4 绘制毛坯图 6
2.3 选择加工方法，制定工艺路线 7
2.3.1 定位基准的选择 7
2.3.2 零件的表面加工方法的选择 7
2.3.3加工阶段的划分 8
2.3.4工序的集中与分散 8
2.3.5工序顺序的安排 8
2.3.6 确定工艺路线 9
2.3.7 加工设备及工艺装备选择 10
2.3.8工序间加工余量的确定 11
2.3.9切削用量以及基本时间定额的确定 12
3 气门摇臂轴支座零件专用夹具的设计 23
3.1 确定夹具的结构方案 23
3.1.1 确定定位方案，选择定位元件 23
3.1.2 确定导向装置 24
3.1.3 确定夹紧机构 25
3.1.4 确定辅助定位装置 25
3.2 设计夹具体 26
3.3 在夹具装配图上标注尺寸、配合及技术要求 26
4总结与展望 28
致 谢 29
参考文献 30