制动杠杆零件
制动杠杆的加工工艺规程及钻14，M8底孔夹具设计
摘要
本设计是基于-制动杠杆零件的加工工艺规程及一些工序的专用夹具设计。-制动杠杆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-制动杠杆的￠22E8孔作为基准，主要加工工序安排是先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。整个加工过程均选用通用机床。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。
关键词制动杠杆零件，加工工艺，夹具，定位，夹紧
Abstract：
This design is the special fixture for machining technology for the middle fork parts and process design. Main processing surface of the middle fork parts is the plane and a series of hole. In general, ensure the machining accuracy of plane than to ensure the accuracy of the 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 to ensure machining precision. Datum selection to the bearing hole in the middle fork of the input shaft and output shaft as a rough benchmark, the top surface and the two holes as a precision technology base. The main process of machining technology is first to support hole positioning processing the top plane, and then the top plane and the series of supporting hole location hole processing technology. In addition to the follow-up processes are individual processeswith the top plane positioning technology and other processing Kong and plane. Processing support holes using the coordinate boring. Thewhole process selection of machine tool. The special fixture fixture, clamping means more choice of pneumatic clamping, clamping reliable, agencies can not self-locking, therefore the production efficiency is high, suitable for large batch, line processing, can meet the design requirements.
Keywords： middle fork parts, processing, special fixture, design
目录
摘要I
1绪论2
2制动杠杆加工工艺规程设计4
2.1零件的分析4
2.1.1零件的作用4
2.1.2零件的工艺分析4
2.2制动杠杆加工的主要问题和工艺过程设计所应采取的相应措施5
2.2.1确定毛坯的制造形式5
2.3.1粗基准的选择5
2.3.2精基准的选择5
2.4制动杠杆加工主要工序安排6
2.2.3确定工艺路线6
2.2.4机械加工余量、工序尺寸及毛坯尺寸的确定10
2.2.5确定切削用量11
2.3小结22
3钻Φ14，M8底孔专用夹具设计24
3.1定位基准的选择24
3.2定位元件的设计24
3.3定位误差分析25
3.4钻削力与夹紧力的计算25
3.5钻套、衬套、钻模板及夹具体设计26
3.6夹紧装置的设计27
3.7夹具设计及操作的简要说明28
总结29
参考文献30
致谢31
钻直径14，M8底孔夹具装配图
过程卡
夹具设计部分
夹具体
设计目录
设计所包含文件
设计摘要
设计字数统计
制动杠杆机械加工工序卡片
制动杠杆毛坯
