分度盘加工工艺及钻2-φ6孔夹具设计

0-分度盘

本设计是基于分度盘零件的加工工艺规程及一些工序的专用夹具设计。分度盘零件的主要加工表面是外圆及孔系。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，本设计遵循先面后槽的原则。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。主要加工工序安排是先以支承孔系定位加工出顶平面，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。夹具选用专用夹具，夹紧方式多选用手动夹紧，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。

关键词分度盘类零件；工艺；夹具；

设计（）外文摘要

Title： The dividing plate processing technology and fixture design

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 processing. Supported hole processing using the method of coordinate boring. The whole process of processing machine combinations were selected. Selection of special fixture fixture, clamping means more choice of pneumatic clamping, clamping reliable, institutions can not be locked, so the production efficiency is high, suitable for large batch, line processing, can meet the design requirements.

Keywords：Angle gear seat parts; fixture;

目录
1加工工艺规程设计1
1.1零件的分析1
1.1.1零件的作用1
1.1.2零件的工艺分析1
1.2分度盘加工的主要问题和工艺过程2
1.2.1孔和平面的加工顺序2
1.2.2加工方案选择2
1.3分度盘加工定位基准的选择3
1.3.1粗基准的选择3
1.3.2精基准的选择3
1.4分度盘加工主要工序安排3
1.5机械加工余量、工序尺寸及毛坯尺寸的确定6
1.6选择加工设备及刀、量具6
1.7确定切削用量及基本工时（机动时间） 7
1.8时间定额计算及生产安排16
2分度盘钻孔夹具设计18
2.1设计要求18
2.2夹具设计18
2.2.1定位基准的选择18
2.2.2切削力及夹紧力的计算18
2.3定位误差的分析21
2.4夹具设计及操作的简要说明22
结论23
参考文献24
致谢26

1加工工艺规程设计

1.1零件的分析
1.1.1零件的作用
题目给出的零件是分度盘。分度盘的主要作用是分度作用，保证各轴各轴能正常运行，并保证部件与其他部分正确安装。因此分度盘零件的加工质量，不但直接影响的装配精度和运动精度，而且还会影响工作精度、使用性能和寿命。

图片

夹具体

毛坯图

装配图