This design is a lather to become soon an appropriation for inside pulling out fork spare parts processing craft rules distance and some work prefaces tongs design.This pull out the construction of the fork spare parts than for complicacy, its the place that process is a peaceful in bore primarily.This design processes after processing first the bore.Process with flat surface the clear and definite dividing the line the bore the coarseness processes to process with the nicety the stage to guarantee their process the precise degree.
The basis of automation. Use of machine tools, need a large number of skilled personnel of modern numerical control technology. The application of numerical control technology not only bring revolutionary change to traditional manufacturing industry, manufacturing industry has become a symbol of industrialization, and with the continuous development of numerical control technology and application field expands, it to the national economy and people′s livelihood some important industry plays a more and more important role in the development.
 
Key words: fixture multi-function; Die forging links; Group technology;clipping tight
目录
一、绪论 1
    （一）课题背景 1
（二）夹具的发展史 1
（三）小结 2
二、链板套筒的加工工艺规程设计 3
    （一）零件的作用 4
（二）零件的工艺分析 5
（三）确定生产类型 7
（四）确定毛坯种类 9
（五）确定锻件加工余量及形状 10
（六）绘制铸件零件图 10
   （七）选择定位基准 12
（八）制定工艺路线 13
（九）选择加工设备和工艺设备 16
（十）确定切削用量及基本工时 18
三、专用夹具设计 18
    （一）问题的提出 19
（二）夹具的设计 20
四、刀具的设计 21
五、设计总结 21
参 考 文 献 22
致谢 23

机械毕业设计|论文