精选文库
—
转向节加工工艺及夹具设计
学生姓名： 学生学号： 院（系）： 年级专业： 指导教师：
二〇一二年四月
精选文库
摘 要
本次设计是对转向节的加工工艺规程及一些工序的专用夹具设计。转向节零件的主要加工表面是转向节轴表面，端面，主销孔及键槽加工。由加工工艺原则可知，为了保证零件的精度，同时节约成本縮短加工周期提高生产效率。那么一个良好的工艺安排以及专用夹具的设计必不可少。在工艺的安排下不紧考虑合理的加工要求，还要考虑操作者及加工机械的安全。同时夹具的设计也要考虑拆卸的方便及安全。设计一个良好的工艺工装安排路线必须对加工件的详细分析及周密考虑后才能得出。所以分析问题是解决问题的关键。同时还要反复的调整。来寻求一个最好的方案。这样才能保证工件的加工精度及生产节拍。
关键词 转向节，加工工艺，专用夹具
—
精选文库
ABSTRACT
The design of the steering knuckle of the processing order of the processes and some special fixture design. Steering knuckle parts of the main surface is a knuckle spindle surface, surface, the main pin hole and keyway. By the principle known processing, in order to ensure the accuracy of the parts, at the same time, save cost shorten the processing cycle to improve production efficiency. So a good process arrangement and special fixture design essential. In the process of arrangement is not tight reasonable processing requirements, but also consider the operator and processing machinery safety. At the same time the fixture design also consider removing the convenience and safety. The design of a good tooling arrangement route must to process a detailed analysis and careful consideration can reach. So the analysis of a problem is the key. At the same time, repeated adjustment. To seek a better solution. In order to ensure the machining precision of the workpiece and the production rhythm.
Key words ： Steering knuckle ,Process of the craft,special fixture
—
精选文库
目 录
摘 要 ......................................................................................................................... Ⅰ ABSTRACT ................................................................................................................. II 目录 ............................................................................................................................... 1 1绪 论 ........................................................................................................................ 1 2 转向节加工工艺规程设计 ..................................................................................... 3
2.1零件的分析 ............................................................................................................................ 3 2.1.1零件的作用..................................................................................................................... 3 2.1.2零件的工艺分析 ............................................................................................................. 3 2.2工艺过程设计所应采取的相应措施 .................................................................................... 4 2.3转向节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.................................................................................................................... 6 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） ............................................................................ 8 2.7时间定额计算及生产安排 .................................................................................................. 23 2.8 本章小结 ............................................................................................................................. 26
3拉削转向节?41主销孔夹具设计 .......................................................................... 27
3.1拉削转向节?41主销孔夹具设计 ...................................................................................... 27 3.2定位方案的分析和定位基准的选择 .................................................................................. 27 3.3拉削力与夹紧力计算 .......................................................................................................... 28 3.4底座设计 .............................................................................................................................. 28 3.5夹具精度分析 ...................................................................................................................... 28
—
精选文库
3.6本章小结 .............................................................................................................................. 29
4钻2-?14.5及4-?16夹具设计 ................................................................................. 30
4.1钻2-?14.5及4-?16夹具设计 ............................................................................................ 30 4.2定位方案的分析和定位基准的选择 .................................................................................. 30 4.3钻削力与夹紧力计算 .......................................................................................................... 31 4.4V型块与本体的设计 ........................................................................................................... 31 4.5夹具精度分析 ...................................................................................................................... 32 4.6本章小结 .............................................................................................................................. 32 ........................................................................................................................................................
5铣主销孔外侧面夹具设计 ...................................................................................... 33
5.1铣主销孔外侧面夹具设计 .................................................................................................. 33 5.2定位方案的分析和定位基准的选择 .................................................................................. 33 5.3铣削力与夹紧力计算 .......................................................................................................... 34 5.4底座的设计 .......................................................................................................................... 34 5.5夹具精度分析 ...................................................................................................................... 35 5.6本章小结 .............................................................................................................................. 35 ........................................................................................................................................................
结 论 ....................................................................................................................... 36 参 考 文 献 ............................................................................................................... 37 致 谢 ......................................................................................................................... 38
—
转向节加工工艺及夹具设计
