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1、 2016 届本科生毕业设计届本科生毕业设计 论文分类号论文分类号： TH162 题目：题目：泵体零件的加工工艺和工装设计泵体零件的加工工艺和工装设计摘 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。泵体零件上往往都有各种不同用途和不同精度的孔需要加工。泵体零件的工艺规程及钻攻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2-10M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；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
2、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：工艺； 切削用量； 夹紧； 定位； 误差ABSTRCTThis design content has involved the machine manufacture craft and the engine bed jig design, the metal-cutting machine tool, the common difference coordination and
3、the survey and the various knowledge. Pump body parts are usually different purposes and accuracy of the hole machining. The reduction gear box body components technological process and the processing 2-10M hole jig design includes the components processing the technological design, the working proc
4、edure design as well as the unit clamp design three parts. Must first carry on the analysis in the technological design to the components, understood the components the craft redesigns the semi finished materials the structure, and chooses the good components the processing datum, designs the compon
5、ents the craft route; After that is carrying on the size computation to a components each labor step of working procedure, the key is deciding each working procedure the craft equipment and the cutting specifications; Then carries on the unit clamp the design, the choice designs the jig each composi
6、tion part, like locating the part, clamping the part, guiding the part, to clamp concrete and the engine bed connection part as well as other parts; Position error which calculates the jig locates when producing, analyzes the jig structure the rationality and the deficiency, and will design in later
7、 pays attention to the improvement.Keywords: Craft; Cutting specifications; Clamp; Localization; Error目 录绪论.11.1 国内外研究现状.11.2 机械加工工艺的概述.11.3 机床夹具概述.21.3.1 机床夹具的功能.21.3.2 机床夹具在机械加工中的作用.22 零件的分析.42.1 零件的作用.42.2 零件的工艺分析.43 工艺规程设计.63.1 确定毛坯的制造形式.63.2 毛坯的设计.63.3 基面的选择.73.4 制定工艺路线.73.5 机械加工余量的确定.83.6 确定切削用量及基本工时.84 夹具设计.154.1 问题提出.154.2 定位基准的选择.154.3 定位元件的设计.154.4 切削力和夹紧力的计算.154.5 定位误差分析.164.6 夹具设计及简要操作说明.16结束语.18参考文献.19致 谢.
