差速器主外壳加工工艺工装设计.doc

差速器主外壳加工工艺工装设计 摘 要 汽车差速器作为汽车必不可少的部件之一曾被汽车专家誉为“小零件大功用”。随着社会的发展，汽车在生产和生活中的越来越广泛，差速器是汽车中的重要部件，其壳体的结构及加工精度直接影响差速器的正常工作，因此研究差速器的加工方法和工艺的编制是十分必要和有意义的。 本文主要是介绍了差速器外壳的加工工艺及加工中所需要的专用夹具的设计。首先对零件进行了工艺性分析了解各加工面所需要达到的加工精度，确定各个加工面的加工余量。然后制定了两个工艺路线方案，通过对比评估确定了合理的能够满足加工需要的工艺方案。为了保证零件的加工精度需要进行基准面的选择和对零件的定位，并遵循六点定位原则，进行定位误差的分析。最后主要介绍的是镗孔和铣小端面专用工艺方案的设计，主要内容包括夹具的定位，零件与零件的连接、夹具体与机床的连接和误差分析。 关键词 差速器主外壳；加工工艺；夹具设计  Differential Case Processing Abstract One of the components of a vehicle automobile differential was essential car experts as small parts big function. With the development of society, the automobile production and life more and more widely, the differential is an important component of the car, its structure and precision of the housing directly affect the normal work of the differential, the study of differential processing methods and processes of preparation is very necessary and meaningful. ?? This article is to introduce a differential case processing technology and processing needs of special boring machine in the fixture design. First of all parts of the process of analysis needed to understand the processing of surface machining accuracy to hit, to determine the allowance of each machined surface. To develop a reasonable process to meet the processing needs of the program. To ensure the machining accuracy is required datum selection and positioning of parts, and follow certain basic principles, and the positioning error analysis. Processing also involves a variety of extra fixture design. This paper describes the design of special fixture boring, there are fixture positioning, parts and components of the connection, the connection with the machine specific folder and error analysis. Keywords differential；processing technology；the design of fixture boring 目录 摘 要 I Abstract II 第1章 绪论 1 1.1 本课题的研究背景 1 1.2 汽车差速器国内外研究现状 1 1.2.1 国外差速器生产企业的研究现状 1 1.2.2 我国差速器行业市场的发展以及研究现状 2 1.3 差速器的主要分类 3 1.3.1 开式差速器 3 1.3.2 限滑差速器 3 1.4 差速器结构 4 1.5 论文主要内容 4 第2章 工艺规程设计 5 2.1 零