A3夹具总图
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。
十字头活塞零件的加工工艺设计、工序设计以及精车Φ85外圆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：十字头活塞；工艺；工序；专用夹具；切削用量
Abstract
This design involves the knowledge of machine manufacturing process and fixture design, metal cutting machine tools, tolerance matching and measurement.
There are three parts in the process design,working procedure design of crosshead piston parts and the design of special fixture for finishing turningΦ 85 outer circle. In the process design,we should first analyze the parts, understand the process of the parts, then design the structure of the blank, and select the processing benchmark of the parts, and design the process route of the parts; then calculate the size of each process step of the parts, the key is to determine the process equipment and cutting parameters of each process; then carry out the design of the special fixture, and select and design the fixture Each component of the fixture, such as positioning element, clamping element, guiding element, connecting part between the fixture and the machine tool and other parts; calculate the positioning error generated during the fixture positioning, analyze the rationality and shortcomings of the fixture structure, and pay attention to improvement in the later design.
Keywords: crosshead piston; process; process; special fixture; cutting amount
目录
摘要1
Abstract 2
1.零件图工艺性分析4
1.1零件结构功用分析： 4
1.2零件图纸分析： 4
1.3主要技术条件： 4
2.毛坯选择4
2.1毛坯类型4
2.2毛坯余量确定4
3．机械工艺路线确定5
3.1定位基准的选择： 5
3.2加工顺序的安排： 5
3.3加工阶段的划分说明6
3.4加工工序简图6
4.精车Φ85外圆夹具的设计14
4.1问题的提出： 14
4.2夹紧力计算： 14
设计体会16
参考文献17
A3固定顶尖
A4十字头活塞零件图
A4十字头活塞毛坯图
A4-毛坯图-版本2
工序卡
过程卡
夹具设计部分
目录
摘要
字数
