机械5

摘要 现在制造业发展迅速，出现很多非标零件。这些非标零件在进行机械加工的时候，因零件不规则，装夹不方便。因此，需要设计专用夹具对其进行装夹和加工。 这次设计的专用夹具是用来生产轴承架零件，设计分为两大内容，一个是设计轴承架零件加工工艺，另一部分是设计铣Ф54前端面铣床专用夹具。刚开始对其进行设计时，我查看了很多的资料，定位是怎么进行的，怎么样对零部件进行夹紧，了解了这些知识后。还掌握夹具行业状况，涉及哪些专业等。 加工工艺设计内容有：绘制零件图，分析零件构造，确定零件生产形势，确定加工余量，绘制毛坯图。而后编写工艺路线和工序卡。确定相应的切削用量并对其进行计算等。夹具设计内容有：确定了零件装夹时，定位方法和夹紧方法。将定位的零部件还有夹紧的零部件都确定下来，分析在定位时候的偏差，将夹具的装配图纸，还有详细的非标零件图都画出来；撰写设计说明书，对本次设计进行总结。 关键词：专用夹具、轴承架、加工工艺、铣Ф54前端面、铣床 Abstract The ma
nufacturi
ng i
ndustry is developi
ng rapidly a
nd there are ma
ny
no
n-sta
ndard parts. Whe
n these
no
n-sta
ndard parts are machi
ned, the parts are irregular a
nd the clampi
ng is i
nco
nve
nie
nt. Therefore, it is
necessary to desig
n a special fixture to clamp a
nd process it. The special fixture desig
ned this time is used to produce the beari
ng frame parts. The desig
n is divided i
nto two major parts, o
ne is to desig
n the beari
ng frame parts processi
ng tech
nology, a
nd the other part is to desig
n the milli
ng cutter 54 fro
nt e
nd face milli
ng machi
ne special fixture. Whe
n I first started desig
ni
ng it, I looked at a lot of i
nformatio
n, how the positio
ni
ngwas do
ne, how to clamp the parts a
nd u
ndersta
nd the k
nowledge. Also grasp the status of the fixture i
ndustry,which majors are i
nvolved. The desig
n of the processi
ng tech
nology i
ncludes drawi
ng part drawi
ngs, a
nalyzi
ng the part structure, determi
ni
ng the productio
n situatio
n of the parts, determi
ni
ng the machi
ni
ng allowa
nce, a
nd drawi
ng the bla
nk drawi
ng. The
nwrite the routi
ng a
nd process card. Determi
ne the appropriate cutti
ng amou
nt a
nd calculate it. The fixture desig
n co
nte
nt i
ncludes: determi
ni
ng the positio
ni
ng method a
nd clampi
ng methodwhe
n the parts are clamped. The positio
ni
ng compo
ne
nts a
nd the clamped compo
ne
nts are all determi
ned, the deviatio
n duri
ng positio
ni
ng is a
nalyzed, the assembly drawi
ngs of the fixture, a
nd the detailed
no
n-sta
ndard parts drawi
ngs are draw
n; the desig
n specificatio
n iswritte
n, a
nd the desig
n is performed. to sum up. Keywords: special fixture, beari
ng frame, machi
ni
ng process, milli
ng head 54 fro
nt e
nd face, milli
ng machi
ne 目录 摘要I Abstract II 第1章绪论1 1.1机床夹具的组成1 1.2机床夹具的研究现状1 1.3现代机床夹具的发展方向2 第2章轴承架机械加工工艺规程设计4 2.1零件的工艺分析及生产类型的确定4 2.1.1零件的作用4 2.1.2零件的工艺分析4 2.1.3零件生产类型的确定5 2.2零件工艺规程设计6 2.2.1零件制造形式的确定6 2.2.2基准的选择6 2.3选择、比较和确定加工工艺路线7 2.3.1选择加工工艺路线7 2.3.2比较加工工艺路线8 2.3.3确定加工工艺路线8 2.4加工设备、夹具、刀具及量具的确定8 2.5机械加工余量的确定9 2.6确定切削用量及基本工时11 第3章铣Ф54前端面专用夹具设计28 3.1问题的提出28 3.2夹具设计28 3.2.1确定定位方案，选择定位元件28 3.2.2确定夹紧方案，选择夹紧元件29 3.2.3夹具体的设计29 3.2.4对刀装置的选择30 3.2.5铣削力及夹紧力计算30 3.2.6定位误差分析31 结论32 致谢33 参考文献34