箱盖机械加工工艺工装设计

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箱盖机械加工工艺工装设计

摘要：装载机主要用来装卸成堆散料，也能进行轻度的铲掘工作。由于它适用于建筑、矿山、铁道、公路、水电等国民经济各个部门，因此，在国内外产量与品种的发展都较快，是工程机械中的一个主要机种。
    装载机根据不同的使用要求，发展形成了不同的结构类型。通常，按使用场合的不同，分成露天用装载机和井下用装载机；接行走系统结构不同，分成轮式装载机与履带式装载机；按卸料方式不同，分为前卸式(前端式)、后卸式与回转式装载机。
    本文主要是介绍了装载机箱盖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打到的加工精度，确定各个加工面的加工余量。制定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，并遵循一定基本原则，并进行定位误差的分析。加工中还涉及到各种加床夹具的设计。本文主要介绍的是专用夹具的设计，主要有夹具的定位，零件与零件的连接、夹具体与机床的连接和吾侪分析。

关键词：设计流程  设计规则 机械设计

Cover design of mechanical processing technology and equipment
Abstract: Loader piles mainly used for loading and unloading of bulk materials, but also for mild shovel work. As it applies to construction, mining, railway, highway, water and other economic departments, therefore, the development of domestic production and the varieties are faster, is a major construction machinery models.
Loader according to different requirements, develop and form a different structure types. Usually, by the use of different occasions, into the open hole with a loader and Loader; then walking system of different structures, into wheel loaders and crawler loaders; by discharge in different ways, into the former dump (front-end ), after the dump and rotary loaders.
This article is to introduce a loader cover processing technology and processing needs special 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 Wuchai analysis.
Keywords: Loader  Processing  Special fixtures  Location

 目  录
1绪 论 1
1.1研究的背景及意义 1
1.2.国内外研究概况及发展趋势 1
2  零件的分析 2
2.1  零件的作用 2
2.2  零件的工艺分析 2
3  工艺规程设计 3
3.1  毛坯的制造形式 3
3.2  基准面的选择 3
3.2.1  粗基准的选择 3
3.2.2  精基准的选择 3
3.3  制订工艺路线 4
3.3.1  工艺线路方案一 4
3.3.2  工艺路线方案二 4
3.3.3  工艺方案的比较与分析 5
3.4  机械加工余量、工序尺寸及毛坯尺寸的确定 5
3.5  确定切削用量 6
3.5.1 工序Ⅰ 6
3.5.2 工序Ⅱ 6
3.5.3 工序Ⅲ 6
3.5.4 工序Ⅳ 7
3.5.5 工序Ⅴ 9
3.5.6 工序Ⅵ 10
3.5.7 工序Ⅶ 10
3.5.8 工序Ⅷ 10
3.5.9 工序Ⅸ 10
3.5.10 工序Ⅹ 11
4  夹具设计 11
4.1 定位基准的选择 11
4.2 切削力及夹紧力的计算 11
4.3 定位误差的分析 12
4.4 夹具设计及操作的简要说明 12
4.5 夹具设计评价与结论 14
结 论 15
参考文献 16
致 谢 18
附 录 19

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