中间轴拨叉机械加工工艺及铣槽夹具设计.zip

常州机电职业技术学院
毕业设计(论文)说明书
作者: 学号:
系部:
专业:
题目: 中间轴拨叉加工工艺及夹具设计

指导者:
评阅者:
年月
毕业设计(论文)中文摘要
本设计是基于-中间拔叉零件的加工工艺规程及一些工序的专用夹具设计。-中间拔叉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-中间拔叉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。
关键词中间拔叉零件,加工工艺,专用夹具,设计
毕业设计(论文)外文摘要
Title: The intermediate shaft fork processing technology and fixture design
Abstract:
This design is the special fixture for machining technology for the middle fork parts and process design. Main processing surface of the middle fork parts is the plane and a series of hole. In general, ensure the machining accuracy of plane than to ensure the accuracy of the processing easily. Therefore, the design follows the surface after the first hole principle. And the hole and the plane processing clearly divided into roughing and finishing stages to ensure machining precision. Datum selection to the bearing hole in the middle fork of the input shaft and output shaft as a rough benchmark, the top surface and the two holes as a precision technology base. The main process of machining technology is first to support hole positioning processing the top plane, and then the top plane and the series of supporting hole location hole processing technology. In addition to the follow-up processes are individual processes with the top plane positioning technology and other processing Kong and plane. Processing support holes using the coordinate boring. The whole process selection of machine tool. The special fixture fixture, clamping means more choice of pneumatic clamping, clamping reliable, agencies can not self-locking, therefore the production efficiency is high, suitable for large batch, line processing, can meet the design requirements.
Keywords: middle fork parts, processing, special fixture, design