摘  要

本次设计是对轴承座零件的加工工艺规程及一些工序的专用夹具设计。轴承座零件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。基准选择以后轴承座两侧面作为粗基准，以轴承座底面及中心台阶孔精基准。主要加工工序安排是先以轴承座两侧面互为基准加工出底面，再以底面定位加工出中心台阶孔。在后续工序中除个别工序外均用底面和中心台阶孔定位加工其他孔与平面。整个加工过程均选用组合机床。
关键词  轴承座，加工工艺，专用夹具

ABSTRACT

This design is the bearing (right) part of the process planning and some special fixture design process. Bearing (right) part of the main processing surface is flat and the hole. Known by the principle of processing technology to ensure precision plane precision than the hole to ensure easy. Therefore, this design follows the principles of the hole after the first plane. And a clear hole and surface processing is divided into roughing and finishing stages to ensure accuracy. After bearing reference selection (in) both sides of the surface as rough benchmark, bearing (right), and the central bottom hole fine level basis. The main processing procedure is first bearing arrangement (middle), the sides of the underside of each other benchmarks processed, then processing the center of the bottom step positioning holes. In the follow-up process, in addition to the individual processes are outside the central level with the bottom hole location and the other hole and surface processing. Were used throughout the machine tool processing.
Key words  bearing (right),Process the craft,Appropriation tongs
目录
摘  要……………………………………………………………………4
ABSTRACT…………………………………………………………………5
一、零件的分析……………………………………………………  6
（一）零件作用……………………………………………………6
（二）零件的工艺分析……………………………………………7
(三) 零件表面加工方法的选择…………………………………8
二、工艺规程设计……………………………………………………9
（一）确定毛坯的制造形式………………………………………9
（二）基面的选择…………………………………………………9
三、制定工艺路线…………………………………………………25
（二）工艺路线方案一……………………………………………11
（二）工艺路线方案二……………………………………………11
（三）工艺方案的比较与分析……………………………………12
四、机械加工余量、工序尺寸及毛坯尺寸的确定………………13
五、确定切削用量及基本工时……………………………… …13
六、专用夹具设计…………………………………………………25
1专用夹具设计主旨………………………………………………25
2夹具设计…………………………………………………………30
3夹具设计及操作的简要说明……………………………………30
七、课程设计心得体会……………………………………………31
八、参考文献………………………………………………………33

机械毕业设计|论文