摘要:本次设计是针对机座的各加工表面进行铣面、镗孔、钻孔等加工，此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，机械加工工艺规程和工艺设备设计。

　　　机座的工艺规程和工艺设备设计是针对机座毛坯零件所进行的工艺规程选定和工艺设备的设计。对机座零件毛坯采用切削的方法改变毛皮的尺寸、形状和材料的物理机械性质使之成为具有所需要的一定精度、粗糙度等的零件。 其中包括对零件的分析，了解其工艺，设计出毛柸的结构，选定零件加工基准，设计工艺路线等。然后针对每个工步的工序进行尺寸计算，算出各个工序的工艺和切削用量，然后针对三种不同的工艺过程设计出三套机床专用夹具，选择合适的部件，比如定位元件、引导元件、夹紧元件等等。计算夹具的定位误差，分析所设计的夹具的不足之处和合理性，并在设计中进行更正改进。

关键词：工艺规程 工艺设备 切削用量 专用夹具 定位误差 

ABSTRACT:This design is for machine base surface of each machining surface milling, boring, drilling and other processing, the design relates to the mechanical manufacturing technology and machine tool fixture design, metal cutting machine tools, machining process planning and process equipment design.

　　　Machine base process planning and process equipment is designed for machine base rough parts performed by the selected process planning and process equipment design. Rough parts of the base to change the method used fur cutting size, shape and physical-mechanical properties of the material to become a certain accuracy required, roughness of the parts. Including on the part of the analysis, to understand its process to design the structure of hair bear grudge, selected parts processing benchmarks, such as the design process route. Then for each step of the process for size calculation, calculate the various processes and cutting process, and then for three different processes to design three sets of machine-specific fixtures, select the appropriate components such as positioning elements, guiding elements, clip tight components and so on. Calculation fixture positioning errors, analyze the design of the inadequacies of the fixture and rationality, and to make corrections in the design improvements.

Keywords：process planning; process equipment; cutting special-fixture; positioning errors