机械5

夹具体底座零件的加工工艺及钻装夹系统设计 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。 夹具体零件工艺规程及钻2-Φ10孔的工装夹具设计，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：夹具体、工艺；夹具设计；工序；切削用量 Abstract This desig
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ng parameter 目录 摘要I Abstract II 第一章概述发展1 1.1机床夹具的主要功能1 1.2机床夹具的组成1 1.3夹具设计的步骤和基本要求1 1.3.1夹具设计的基本要求1 1.3.2夹具的设计步骤2 1.3.3夹具总图上尺寸、公差与配合和技术条件的标注3 第二章工艺规程设计6 2.1夹具体零件6 2.2夹具体零件的工艺分析7 2.3基准的选择8 2.3.1粗基准的选择原则8 2.3.2精基准选择的原则8 2.4制定工艺路线9 2.5确定各工序的加工余量9 2.6确定切削用量及基本工时11 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 3.3夹紧机构和夹紧力18 3.4误差分析20 3.4.1定位误差20 3.4.2产生定位误差的原因20 3.4.3定位误差分析21 3.5绘制装配图22 结束语24 谢辞25 参考文献26