本科毕业论文-基于液压夹紧的专用夹具设计——支架零件的工艺工装设计_精品.doc
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太湖学院
毕业设计(论文)
题目:
——支架零件的工艺工装设计
信机 系 机械工程及自动化 专业
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201年5月2日摘 要
Abstract
This article is carries on the design of the bracket components machine process, and the clamp designed based on the hydraulic pressure which aimed at some working process, and has carried on another working procedure ordinary jig design. The bracket components take the boom trestle class components, its main processing surface is the plane and the hole. According to the machine-finishing technological requirement, after following the first surface, the hole principle, and is clear about the hole and the plane processing divides the rough machining and the precision work stage guarantees the working accuracy. The datum choice takes the thick datum by the support big outer annulus end surface, takes the fine datum by the support big outer annulus end surface with two craft holes, had determined in its processings craft route and the processing needs each technological parameter. And according to request to a working procedure has carried on based on the hydraulic pressure clamp unit clamp design. Entire processing process chooses all-purpose machine tool.
Key words: bracket; processing technic ;special fixture; hydraulic pressure
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 支架零件的三维造型 3
3 零件的分析 10
3.1 零件的作用 10
3.2 零件的工艺分析 10
4 工艺规程设计 11
4.1 确定毛坯的制造形式 11
4.2 工艺过程设计所应采取的相应措施 11
4.3 定位基准面的选择 11
4.3.1 粗基准的选择 11
4.3.2 精基准的选择 12
4.4 制定工艺路线 12
4.4.1 工艺路线方案一: 12
4.4.2 工艺路线方案二: 12
4.4.3 工艺方案的比较与分析 13
4.5 机械加工余量、工序尺寸及毛坯尺寸的确定 13
4.6 确定切削用量及基本工时 15
4.6.1 工序三:铣的端面,铣的端面,铣×2的端面。 16
4.6.2 工序四:钻-扩-铰-精铰的孔。 18
4.6.3 工序五:钻-扩-铰-精铰的孔。 20
4.6.4 工序六:钻孔,锪孔,倒角。 22
4.6.5 工序七:铣端面。 23
4.6.6 工序八:粗镗-半精镗-精镗的孔。 23
5 基于液压夹紧的专用夹具设计 26
5.1 设计主旨 26
5.2 夹具设计 26
5.2.1 定位基准的选择 26
5.2.2 定位误差分析 26
5.2.3 铣夹具设计的基本要求 27
5.3 液压缸的设计计算 27
5.3.1 切削力及切削力矩的计算与分析 27
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