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伸出支架梁的镗Φ55孔专用夹具设计及加工工艺规程制定含非标7张CAD图+说明书

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伸出支架梁——A2

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。
本次课题伸出支架梁的工艺规程制定和镗Φ55孔的专用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：伸出支架梁；镗Φ55孔；专用夹具；工序设计；切削用量
Abstract
This design involves mechanical manufacturing technology and machine tool fixture design, metal cutting machine tools, tolerance coordination and measurement and so on.
This project extends the technical specification for the support beam to make and boring the special fixture design of the 55 holes, including three parts, including the process design, the process design and the special fixture design. In the process design, the parts are analyzed first, the process of the parts is redesigned and the structure of the blank is redesigned. The process datum of the parts is selected and the process route of the part is designed. Then the size calculation of theworking procedure of the parts is calculated, the key is to determine the process equipment and the cutting amount of thevariousworking order; then, the key is to determine the amount of the process equipment and the cutting amount. The design of the special fixture is carried out, and the components of the fixture are designed, such as the positioning element, the clamping element, the guiding element, the connecting partswith the machine tool and the other parts. The positioning error is calculatedwhen the fixture is positioned, and the rationality and inadequacies of the fixture structure are analyzed, and the design is injected in the future. It is intended to be improved.
Keywords: extending support beam; boring 55 holes; special fixture; process design; cutting parameter
目录
摘要I
Abstract II
1工艺规程制定1
1.1机械加工工艺规程制订1
1.2机械加工工艺规程的组成1
1.3制订机械加工工艺规程的原始资料1
2零件的分析2
2.1零件的作用2
2.2零件的工艺分析2
2.3零件的结构工艺性分析2
3工艺规程设计4
3.1确定毛坯的制造形式4
3.2基面的选择4
3.3确定各工序的加工余量5
3.4制订工艺路线7
3.5确定切削用量以及时间定额8
4镗床夹具设计26
4.1问题的提出26
4.2定位基准的选择26
4.3定位元件的设计26
4.4定位误差分析26
4.5切削力的计算与夹紧力分析27
4.6夹具设计及操作简要说明27
谢辞28
参考文献29