零件图
摘要
支座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。本设计是基于支座零件的加工工艺规程及一些工序的专用夹具设计。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。基准选择以支座的输入轴和输出轴的支承孔作为粗基准，以底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。夹具选用专用夹具，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：支座类零件；工艺；夹具
Abstract
The main machining surface of bearing parts is plane and hole system. Generally speaking, it is easier to ensure the machining accuracy of plane than hole system. This design is based on the processing technology of bearing parts and some special fixture design process. Therefore, the design follows the principle of first face and then hole. The machining of hole and plane is clearly divided into rough and finishing stages to ensure the machining accuracy of hole system. The support holes of the input shaft and output shaft of the support are chosen as the rough datum and the bottom surface and two process holes as the fine datum. The main process arrangement is that the top plane is processed by the supporting hole system and then the process hole is processed by the supporting hole system. The top plane and process hole are used to locate and process other hole system and plane in the following process except for some procedures. Fixture selection special fixture, the mechanism can not be self-locking, so the production efficiency is higher, suitable for large quantities, production line processing, can meet the design requirements.
Keywords: bearing parts; Process; Fixture
目录
1.加工工艺课程设计1
1.1零件的分析1
1.2支座加工的主要问题和工艺过程设计所应采取的相应措施2
1.3支座加工定位基准的选择2
1.4支座加工主要工序安排3
1.5机械加工余量、工序尺寸及毛坯尺寸的确定4
1.6确定切削用量及基本时间5
2夹具设计6
2.1夹具类型及使用机床选择7
2.2定位基准及定位元件选择7
2.3夹紧机构及夹紧元件初步选择8
2.4钻模板设计8
2.5计算切削力和夹紧力9
2.6定位误差分析10
2.7夹具体设计10
参考文献12
夹具装配图
夹具体图
毛坯图
过程卡
夹具设计部分
目录
设计所包含文件
摘要
字数
工序卡
