某摩托车壳体零件工艺规程及工艺装备的设计（2）（本科毕业论文设计）.doc

摘 要

近年来，我国摩托车生产企业经过技术的引进、消化、吸收和创新，生产水平和管理水平取得了很大的发展。各生产企业在提高外观、性能的同时，对发动机关键零件的制造工艺更是不断地进行探索，以保证发动机的高性能。
由于摩托车发动机壳体零件是发动机其他零件的安装基准，其加工质量将直接影响发动机的功率、油耗、噪声等性能，其工艺规程及工艺设备的设计非常重要。
本次设计主要内容包括：零件的分析、毛坯的材料及制造方式、工艺规程的设计和两套夹具的设计，包含了摩托车壳体零件制造的全过程。
在第一章的零件分析中，主要分析了零件的功用结构及分析了本零件的主要技术要求；第二章工艺规程设计的主要内容有毛坯材料的选择和毛坯制造方法的选择；第三章的主要内容是工艺规程的拟定、定位基准、加工方法的选择、加工阶段的划分等。通过方案的比较，确定最佳的工艺路线；第四章结合零件图、毛坯图，使用查表法确定工序加工余量、工序尺寸及公差，列出详细的加工余量表，选取典型的工序进行切削用量和工时定额的计算。第五章选择两道工序设计两套专用夹具设计。


关键词：零件分析，工艺规程，工艺路线，夹具















ABSTRACT

In recent years, the motorcycle manufacturing corporations of our country have obtained very great development in the level of production and management. Through introducing, digesting, absorbing of technology from abroad and innovating. So as to ensure the high performance of the engine, those corporations are exploring constantly even more to starting the manufacturing process of the key parts of engine while improving the appearance, and performance.
Because the motorcycle engine shell part is the installation matrices of the engine, its quality of processing will influence performance such as the power, oil consumption, noise of the engine directly, the designs of its rules of craft and craft apparatus are very important.
This Graduation Design mainly content to include: Analysis of the part, material and the designs of the manufacture of the blank of the part, the design of process route and the designs of two sets of fixtures, containing the whole manufacturing course of the motorcycle shell part.
In the part of chapter one the main analysis of the part analyzed the function structure and analyzing the main technical requirement for this part; the main contents of chapter two are designed as the choice of the blank material and choice of the manufacturing approach blank. In chapter 3, the main content is drafting, the choice of location datum and the preparation method, the division stage of the craft rules, etc. Through the comparison of the scheme, confirm the best craft route. Chapter four combine part drawing, blank drawing, use locating table way to confirm process processing surplus, process dimension and tolerance, list the detailed scale of processing, choose the typical process and carry on the calculation which cuts consumption and hour norm. Two processes are chosen to design two sets of special fixtures to be designed in chapter five.

Key words：analysis of the part, process route, technological procedure, fixture






目 录

中文摘要 Ⅰ
ABSTRACT Ⅱ
1绪论 1
1.1 论文的目的和意义 1
1.2 课题研究的任务 1
1.3 论文的主要工作 2
2 零件分析 3
2.1 零件功用及结构特点 3
2.2 零件的工艺分析 3
2.3 发动机壳体加工过程常出现的问题 8
3 毛坯的选型与制造 11
3.1 确定零件的生产纲领 11
3.2 零件材料的选择 11
3.3 毛坯种类及制造方法的选择 12
3.4 毛坯的设计及生产 15
4 箱体的机械加工工艺路线 19
4.1 定位基准的选择 19
4.2 加工方法的选择 22
4.3 加工阶段的划分 24
4.4工序内容的合理安排 24
4.5 加工顺序的安排 25
4.6 拟定工艺路线 26
4.7 零件的检验 30
5 工序具体内容的确定 31
5.1 加工余量和工序尺寸的确定 31
5.2 工艺装备的选择 34
5.3 确定工序时间定额 36
6 夹具设计 41
6.1 夹具概述 41


6.2以高25mm台阶为基准铣A面的专用夹具设计 42
6.3工序35：镗ф75轴孔的专用夹具设计 42
7 总结 50
8 致谢 51
参考文献 52