文档介绍：安徽建筑工业学院
毕业设计(论文)
专业机械设计制造及其自动化
班级 08机械(2)班
学生姓名王怀成
学号
课题轴承座零件机械加工工艺规程及专用夹具设计
指导教师魏常武
2012 年 6 月 1 日
摘要
本次设计是对轴承座件的加工工艺规程及一些工序的专用夹具设计。轴承座的作用是支撑和固定轴承,当然也要承担轴上的载荷。轴承座的主要加工表面是平面及孔。由加工工艺原则可知,保证平面的加工精度要比保证孔的加工精度容易。所以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加工精度。基准选择以Φ32孔作为粗基准,以为轴承座底面作为精基准。
主要加工工序安排是先以Φ30孔为基准加工出底面,再以底面定位加工出工艺孔。在后续工序中除个别工序外均用底面和工艺孔定位加工其他孔与平面。
关键词:轴承座;加工工艺;专用夹具
ABSTRACT
This design is a special fixture designed for bearing parts of the process planning and process . The role of the bearing support and a fixed bearing , of course, have to bear the load axis. Known by the principles of process ,to ensure that the plane of the machining accuracy than to ensure the machining accuracy of the hole easily . This design follows the principle of the first surface after the hole . And hole plan a processing is clearly divided into roughing and finishing stages to ensure accuracy . The choce of baseline to  Φ32 Kong as a crude benchmark ,that bearing the underside as affine be nchmark .
The main processing operations out of the underside of the arrangement is first Φ30 hole processing, re-to underside positioning process Kong .In addition to the individual processes in the subsequent processes are processing other holes with flat bottom and technical hole positioning .
Keywords:  bearing seat;  processing;  special fixtures.
目录
目录………………………………………………………………………4
绪论……………………………………………………. ………..........5
1零件的分析…………………………………………………………..9
………………………………………………………9
…………………………………………………9
……………………………………………………….9
加工表面及孔……………………………………………..10
2 确定零件的生产类型......................................................................10
零件的生产类型…………………………………………….....11
毛坯的确定………………………………………………….....11
毛坯的种类及制造方法…………………………………..11
确定铸件加工余量………………………………………..11
绘制毛坯图………………………………………………..11
3 定位基准的选择…………………………………………………12
选择粗基准…………………………………………………...12
选择精基准…………………………………………………...12
4 制定机械加工工艺路线