文档介绍：购买后包含有 CAD 图纸和论文,咨询 Q401339828 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: 年月购买后包含有 CAD 图纸和论文,咨询 Q401339828 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,设计购买后包含有 CAD 图纸和论文,咨询 Q401339828 I 毕业设计(论文)外文摘要购买后包含有 CAD 图纸和论文,咨询 Q401339828 II Title : The intermediate shaft fork processing technology and fixture design Abstract : This design isthe special fixture for machining technology for the middle fork parts and process design. Main processing surface ofthe middle fork parts isthe plane and aseries ofhole. Ingeneral, ensure the machining accuracy ofplane than toensure the accuracy ofthe 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 toensure machining precision. Datum selection tothe bearing hole inthe middle fork ofthe input shaft and output shaft asarough benchmark, the top surface and the two holes as aprecision technology base. The main process ofmachining technology is first tosupport hole positioning processing the top plane, and then the top plane and the series ofsupporting hole location hole processing technology. Inaddition tothe 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 ofmachine tool. The special fixture fixture, clamping means more choice ofpneumatic clamping, clamping reliable, agencies can not self-locking, therefore the production efficiency is high, suitable for large batch, line processing, can meet the design