机械5

滑动轴承座加工工艺的夹具设计 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。 滑动轴承座零件工艺规程及钻Φ5孔、钻、铰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：滑动轴承座;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1章绪论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2章轴承座加工工艺规程设计6 2.1零件的分析6 2.1.1零件的图样分析6 2.1.2零件的工艺性分析7 2.3确定各表面的加工方法与刀具选择9 2.3.1加工方法的选择9 2.3.2刀具的选用10 2.4划分加工阶段10 2.5安排加工顺序10 2.6拟定加工工艺路线11 2.7确定切削用量及基本工时12 第三章钻床夹具26 3.1问题的提出26 3.2定位基准的选择26 3.3切削力和夹紧力计算26 3.4误差分析28 3.4.1定位误差28 3.4.2产生定位误差的原因28 3.4.3定位误差分析29 3.5机床夹具的总体形式30 3.6绘制装配图31 小结33 致谢34 参考文献35