文档介绍：XX 大学
毕业设计(论文)
箱体机械加工工艺及工装夹具设计
所在学院
专 业
班 级
姓 名
学 号
指导老师
年 月 日
I
摘 要
本设计是基于箱体零件的加工工艺规程及一些工序的专用夹具设计。箱体零件的
主要加工表面是平面及孔系。一般来说，保证平面的加工精度要比保证孔系的加工精
度容易。因此，本设计遵循先面后孔的原则。并将孔与平面的加工明确划分成粗加工
和精加工阶段以保证孔系加工精度。基准选择以箱体的输入轴和输出轴的支承孔作为
粗基准，以顶面与两个工艺孔作为精基准。主要加工工序安排是先以支承孔系定位加
工出顶平面，再以顶平面与支承孔系定位加工出工艺孔。在后续工序中除个别工序外
均用顶平面和工艺孔定位加工其他孔系与平面。支承孔系的加工采用的是坐标法镗孔。
整个加工过程均选用组合机床。夹具选用专用夹具，夹紧方式多选用气动夹紧，夹紧
可靠，机构可以不必自锁，因此生产效率较高，适用于大批量、流水线上加工，能够
满足设计要求。
关键词：箱体类零件；工艺；夹具；
全套图纸，加 153893706
ABSTRACT
The design is based on the body parts of the processing order of the processes and
some special fixture design. Body parts of the main plane of the surface and pore system. In
general, the plane guarantee processing precision than that of holes machining precision
easy. Therefore, this design follows the surface after the first hole principle. Plane with
holes and the processing clearly divided into roughing and finishing stages of holes to
ensure machining accuracy. Datum selection box input shaft and the output shaft of the
supporting hole as a rough benchmark, with top with two holes as a precision technology
reference. Main processes arrangements to support holes for positioning and processing the
top plane, and then the top plane and the supporting hole location hole processing
technology. In addition to the follow-up processes individual processes are made of the top
plane and technological hole location hole and plane pr