机械5

摘要 本次设计内容涉及了机械制造工艺及机床夹具设计、金属切削机床、公差配合与测量等多方面的知识。 副翼摇臂的工艺规程及其钻2-Φ8H8孔的工装夹具设计是包括零件加工的工艺设计、工序设计以及专用夹具的设计三部分。在工艺设计中要首先对零件进行分析，了解零件的工艺再设计出毛坯的结构，并选择好零件的加工基准，设计出零件的工艺路线；接着对零件各个工步的工序进行尺寸计算，关键是决定出各个工序的工艺装备及切削用量；然后进行专用夹具的设计，选择设计出夹具的各个组成部件，如定位元件、夹紧元件、引导元件、夹具体与机床的连接部件以及其它部件；计算出夹具定位时产生的定位误差，分析夹具结构的合理性与不足之处，并在以后设计中注意改进。 关键词：副翼摇臂、夹具设计、工艺路线。 Abstract The desig
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n rocker arm, fixture desig
n, process route. 目录 摘要1 Abstract 2 第一章绪论3 1.1引言3 1.2机械加工工艺规程的作用3 1.3研究方法及技术路线4 1.4课题背景及发展趋势5 第二章工艺规程设计6 2.1毛坯的制造形式6 2.2零件分析6 2.3基面的选择6 2.3.1粗基准的选择原则6 2.3.2精基准选择的原则6 2.4制定工艺路线7 2.5确定各工序的加工余量8 2.6确定切削用量及基本工时9 第三章钻床夹具设计18 3.1问题的提出18 3.2定位基准的选择18 3.2.1定位元件18 3.2.2夹紧元件20 3.3分度机构20 3.4定位误差分析23 3.5切削力的计算与夹紧力分析23 3.6导向机构24 3.7夹具截图28 总结35 致谢36 参考文献37