机械5

摇臂的工艺分析及钻Φ12孔夹具设计 摘要 本次夹具设计的主要目的是在确保加工零件质量的基础上，能够见制造成本降到最低，生产的效率大幅度起升，最终，实现利益的最大化。这也是当下国内外加工工艺主要的发展方向。 通过对摇臂零件图还有其外形及内部构造的分析，接而对摇臂的加工工艺、加工装备，切削用量等等进行确定。摇臂是机器上一个重要的控制零件。该零件主要用于连接上下零部件，起到传递运动和动力的作用，受力不大。完成摇臂零件图还有毛坯图的绘制。 依据指导老师分配的任务，设计钻Φ12孔钻床专用夹具的设计。专用夹具的设计主要有3部分：定位方案及元件；夹紧方案及元件；夹具体及钻套等设计。经过分析，本次设计的工艺及专用夹具，能够满足生产的需要。 关键词：摇臂、工艺、Φ12孔、钻床、夹具 ABSTRACT The mai
n purpose of this fixture desig
n is to e
nsure that the quality of processed parts, based o
n the see ma
nufacturi
ng costs ca
n be reduced to a mi
nimum, the efficie
ncy of productio
n rose dramatically, ultimately, to maximize the be
nefits. This is also the mai
n developme
nt directio
n of the curre
nt domestic a
nd i
nter
natio
nal processi
ng tech
nology. Through the parts of the rocker arm aswell as its shape a
nd i
nter
nal structure a
nalysis, the
n the rocker processi
ng tech
nology, processi
ng equipme
nt, cutti
ng a
nd so o
n to determi
ne. Rocker arm is a
n importa
nt co
ntrol part o
n the machi
ne. The parts are mai
nly used to co
n
nect the upper a
nd lower parts, play a role i
n the tra
nsmissio
n of moveme
nt a
nd power, little stress. Completio
n of the rocker parts drawi
ng a
nd rough drawi
ng. Accordi
ng to the task assig
ned by the i
nstructor, the desig
n of drilli
ng fixture forΦ12 hole drilli
ng machi
ne is desig
ned. Special fixture desig
n has 3 mai
n parts positio
ni
ng programs a
nd compo
ne
nts; clampi
ng programs a
nd compo
ne
nts; clamps a
nd drill a
nd other desig
n. After a
nalysis, this desig
n process a
nd special fixtures, to meet the productio
n
needs. Keywords Rocker arm, Craft,Φ12 hole, Drilli
ng machi
ne, Fixture 目录 摘要I ABSTRACT II 一引言1 1.1机械制造工艺的发展1 1.2本课题研究的目的及意义1 1.3专用夹具设计的特点2 1.4专用夹具设计的基本要求2 二分析零件的作用、构造及加工要求3 2.1分析零件的作用3 2.2分析组成表面3 2.3分析加工要求3 三设计零件的工艺规程5 3.1分析加工工艺过程5 3.2确定零件材料5 3.3确定生产形式5 3.4确定加工基准5 3.5确定制造形式6 3.6确定加工工艺路线7 3.7确定加工机床、夹具、刀具及量具8 3.8确定加工余量8 3.9计算切削用量及基本工时10 四设计钻Ф12孔的专用夹具25 4.1确定零件的定位方案25 4.2确定零件的定位元件25 4.3确定零件的夹紧方案25 4.4确定零件的夹紧元件26 4.5确定夹具体26 4.6选择导向装置—钻套27 4.7计算钻削力27 4.8计算夹紧力27 4.9计算定位误差28 五结论29 六致谢30 参考文献31