机械5

摘要 专用夹具在现在的机械加工过程中发挥着重要的作用，实现了加工件的定位和夹紧。本次设计研究的对象是CA10B解放牌汽车后钢板弹簧吊耳。主要研究的内容包括零件的加工工艺设计及铣侧面专用夹具的设计。 CA10B解放牌汽车是典型的汽车之一，后钢板弹簧吊耳为弹簧及主要零部件的定位和工作提供支撑，为汽车的正常工作护航。在对加工工艺设计之前，首先完成了零件作用及零件图的分析，确定了零件的生产类型，制造方式及加工余量，绘制毛坯图。设计加工工艺路线，计算工序卡中涉及到的切削用量等。最后，完善了工艺卡及工序卡。 本次加工的零件设计的内容为：确定零件的定位方案（满足6点定位原理）；选择夹紧装置还有夹紧元件；对夹具体进行了设计和确定；为保证零件的加工精度，设计了对刀装置（对刀块）；对零件在装夹过程中的夹紧力和切削力进行计算等等。最后，完成专用夹具的夹具装配图还有所有非标准的零件图。 关键词：CA10B解放牌汽车；后钢板弹簧吊耳；加工工艺；铣侧面 Abstract The special fixture plays a
n importa
nt role i
n the prese
nt machi
ni
ng process,which realizes the positio
ni
ng a
nd clampi
ng of theworkpiece. The research object of this desig
n is CA10B Jiefa
ng car rear leaf spri
ng lifti
ng lug. The mai
n research co
nte
nts i
nclude the desig
n of machi
ni
ng process a
nd the desig
n of special fixture for milli
ng side. CA10B Jiefa
ng car is o
ne of the typical cars. The rear leaf spri
ng lifti
ng lug provides support for the positio
ni
ng a
ndworki
ng of the spri
ng a
nd mai
n parts, a
nd escorts the
normalwork of the car. Before the desig
n of processi
ng tech
nology, the fu
nctio
n of parts a
nd the a
nalysis of part drawi
ng are completed. The productio
n type, ma
nufacturi
ng mode a
nd machi
ni
ng allowa
nce of parts are determi
ned, a
nd the bla
nk drawi
ng is draw
n. Desig
n the processi
ng route, calculate the cutti
ng parameters i
nvolved i
n the process card. Fi
nally, the process card a
nd process card are improved. The desig
n co
nte
nts of the parts are: determi
ne the positio
ni
ng scheme of the parts(meet the 6-poi
nt positio
ni
ng pri
nciple); select the clampi
ng device a
nd clampi
ng eleme
nt; desig
n a
nd determi
ne the clamp; desig
n the tool setti
ng device(tool block) to e
nsure the machi
ni
ng accuracy of the parts; calculate the clampi
ng force a
nd cutti
ng force i
n the clampi
ng process of the parts. Fi
nally, complete the fixture assembly drawi
ng of special fixture a
nd all
no
n-sta
ndard part drawi
ng. Keywords: CA10B Jiefa
ng car; rear leaf spri
ng lifti
ng lug; processi
ng tech
nology; side milli
ng 目录 摘要II Abstract II 第1章绪论1 1.1本课题研究的目的及意义1 1.2现代机床夹具的发展方向1 第2章零件的机械加工工艺规程设计3 2.1零件的工艺分析及生产类型的确定3 2.1.1零件的作用3 2.1.2零件的工艺分析3 2.1.3零件生产类型的确定4 2.2零件工艺规程设计5 2.2.1零件制造形式的确定5 2.2.2基准的选择5 2.3选择、比较和确定加工工艺路线5 2.3.1选择加工工艺路线6 2.3.2比较加工工艺路线7 2.3.3确定加工工艺路线7 2.4机床夹具的研究现状7 2.5加工设备、夹具、刀具及量具的确定8 2.6机械加工余量的确定8 2.7确定切削用量及基本工时10 第3章铣侧面专用夹具的设计19 3.1确定定位方案，选择定位元件19 3.2确定夹紧方案，选择夹紧元件19 3.3夹具体的设计20 3.4对刀装置的选择21 3.5铣削力及夹紧力计算21 3.6定位误差分析22 结论23 致谢24 参考文献25