发动机汽缸盖——A3
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。
发动机汽缸盖加工工艺过程和铰孔工装的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：发动机汽缸盖;加工工艺;铰孔;工序;专用夹具
Abstract
This design involves mechanical manufacturing technology and machine tool fixture design, metal cutting machine tools, tolerance coordination and measurement and so on.
The machining process of engine cylinder head and the design of reaming tooling are three parts, including process design, process design and 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: engine cylinder cover; processing technology; reaming; process; special fixture
目录
摘要I
Abstract II
序言1
第1章零件的分析2
1.1零件的分析2
1.2零件的主次表面2
1.3零件表面的技术要求3
1.4结构工艺性分析3
第2章计算生产纲领、确定生产类型4
2.1生产纲领4
2.2生效率分析4
2.3生产类型4
第3章毛坯的制造方法6
3.1确定毛坯的制造形式6
3.2毛坯尺寸公差6
3.3毛坯简图6
第4章制订工艺路线7
4.1定位基准选择7
4.1.1粗基准的选择原则7
4.1.2精基准选择的原则7
4.2定位误差8
4.3选择加工方法8
4.4划分加工阶段8
4.5工序的集中与分散9
4.6确定工序顺序9
4.7制定工艺路线10
第5章加工余量、工序尺寸及公差13
第6章选择加工设备及工艺装备15
第7章选择切削用量、确定时间定额16
第8章填写工艺文件22
第9章铰4-Φ11孔的专用夹具设计23
9.1专用夹具的提出23
9.2夹具的定位方案23
9.3夹具的夹紧方案25
9.4导向元件的设计25
9.5夹具体的设计27
9.6装配图的设计28
总结29
参考文献30
夹具装配图——A1
夹具体——A1
毛坯图——A3
钻模板——A3
钻模板支座——A3
工序卡3
工序卡4
工序卡5
工序卡6
工序卡7
工序卡8
过程卡
夹具设计部分
三维零件图
设计目录
摘要部分
字数统计
