后钢板弹簧吊耳机械加工工艺规程及夹具设计-铣叉口两外侧面【气缸】

00零件

摘要
本次设计是对后钢板弹簧吊耳零件的加工工艺规程及一些工序的专用夹具设计。后钢板弹簧吊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。基准选择以后钢板弹簧吊耳大外圆端面作为粗基准，以后钢板弹簧吊耳大外圆端面与两个工艺孔作为精基准。主要加工工序安排是先以后钢板弹簧吊耳大外圆端面互为基准加工出端面，再以端面定位加工出工艺孔。在后续工序中除个别工序外均用端面和工艺孔定位加工其他孔与平面。整个加工过程均选用组合机床。

关键词后钢板弹簧吊耳，加工工艺，专用夹具

ABSTRACT
The design of the plate after spring lug parts of the processing order of the processes and some special fixture design. Spring plate after hanging parts of the main plane of the surface and pore. By the principle known Processing , the plane guarantee precision machining holes than guarantee the machining precision easy. So the design follows the surface after the first hole principle. Plane with holes and the processing clearly divided into roughing and finishing stages of processing to ensure accuracy. After selecting base plate spring lug large cylindrical face as a rough benchmark, After the leaf spring lug large cylindrical end with two holes as a precision technology benchmarks. main processes arrangements after the first spring plate lug large cylindrical face each other benchmarks machined face, End position to further processing out of holes. In addition to the follow-up processes are individual processes with end-positioning technology and other processing Kong and plane. The entire process of processing machine combinations were selected.

Key words The empress steel plate spring coil mourns the ear,Process the craft,Appropriation tongs

目录

摘要Ⅰ
ABSTRACT II
目录1
1绪论1
2后钢板弹簧吊耳加工工艺规程设计3
2.1零件的分析3
2.1.1零件的作用3
1.1.2零件的工艺分析3
2.2工艺过程设计所应采取的相应措施4
2.3后钢板弹簧吊耳加工定位基准的选择4
2.3.1确定毛坯的制造形式4
2.3.2粗基准的选择4
2.3.3精基准的选择5
2.4工艺路线的制定5
2.4.1工艺方案一5
2.4.2工艺方案二5
2.4.3工艺方案的比较与分析6
2.5机械加工余量、工序尺寸及毛坯尺寸的确定6
2.6确定切削用量及基本工时（机动时间） 7
2.7时间定额计算及生产安排16
2.8本章小结18
3粗铣后钢板弹簧吊耳叉口外侧端面夹具设计19
3.1粗铣后钢板弹簧吊耳外侧端面夹具设计19
3.2定位方案的分析和定位基准的选择19
3.3定位误差分析19
3.4铣削力与夹紧力计算20
3.5定向键与对刀装置设计21
3.6夹紧装置及夹具体设计23
3.7夹具设计及操作的简要说明24
3.8本章小结24
结论25
参考文献26
致谢27

夹具装配图

夹具体

零件图

毛坯图