机械5

摘要 通过在校期间对传动轴的学习和认识对传动轴进行一下系统的分析和设计，支承传动件的零件称为轴。轴类零件课程设计是机械工程类专业学生完成本专业教学计划的一个极为重要的实践性教学环节，是使学生综合运用所学过的基本理论、基本知识与基本技能去解决专业范围内的工程技术问题而进行的一次基本训练。这对我即将从事的相关技术工作和未来事业的开拓都具有一定意义。传动轴是组成机器零件的主要零件之，一切做回转运动的传动零件（例如：齿轮，蜗轮等）都必须安装在传动轴上才能进行运动及动力的传动，传动轴常用于变速箱与驱动桥之间的连接。这种轴一般较长，且转速高，只能承受扭矩而不承受弯矩。应该使传动轴具有足够的刚度和高临界转速，在强度计算中，由于所取的安全系数较大，从而使轴的尺寸过大，本文讨论的传动轴工艺设计方法，并根据现行规范增添了些表面处理的方式比如表面法兰。 关键词：传动轴；零件；刚度；强度 Ⅲ Abstract Through the lear
ni
ng a
nd u
ndersta
ndi
ng of the tra
nsmissio
n shaft i
n school to the tra
nsmissio
n shaft system a
nalysis a
nd desig
n, supporti
ng the parts of the tra
nsmissio
n is called the shaft. Shaft parts graduatio
n desig
n is avery importa
nt practical teachi
ng li
nk for stude
nts majori
ng i
n mecha
nical e
ngi
neeri
ng to complete the teachi
ng pla
n of this major. It is a basic trai
ni
ng for stude
nts to comprehe
nsively apply the basic theory, basic k
nowledge a
nd basic skills they have lear
ned to solve e
ngi
neeri
ng a
nd tech
nical problemswithi
n the scope of their major. This is of certai
n sig
nifica
nce to my future related tech
nicalwork a
nd future career developme
nt. Shaft is composed of machi
ne parts of the mai
n parts, all the rotary moveme
nt of tra
nsmissio
n parts(such as: gear,worm gear, etc.) must be i
nstalled o
n the tra
nsmissio
n shaft to carry out the moveme
nt a
nd power tra
nsmissio
n, tra
nsmissio
n shaft is ofte
n used for tra
nsmissio
n a
nd drive axle betwee
n the co
n
nectio
n. The shaft is ge
nerally lo
nger a
nd rotates at a high speed, a
nd ca
n o
nlywithsta
nd torque but
not be
ndi
ng mome
nt. The drive shaft should have sufficie
nt stiff
ness a
nd high critical speed. I
n the stre
ngth calculatio
n, the Ⅳ size of the shaft is too large due to the large safety factor take
n. I
n this paper, the process desig
n method of the drive shaft is discussed. Keywords: drive shaft； parts； stiff
ness； stre
ngth Ⅴ 目录 1引言1 1.1背景现状1 1.2本文研究的目的和研究内容1 2零件的分析1 2.1零件的作用1 2.2零件的工艺分析2 2.3零件表面加工方法的选择2 3加工方案的选择3 3.1方案选择3 3.2加工的技术要求4 4确定毛坯5 4.1传动轴毛坯5 4.2传动轴毛坯材料5 4.3毛坯图5 4.3确定锻件加工余量6 5工艺规程设计7 5.1定位基准的选择7 5.2表面加工方法的确定8 5.3热处理8 5.4辅助工艺9 Ⅵ 5.5工序顺序的安排9 5.6拟定工艺规程9 5.7加工顺序的安排9 5.8制定工艺路线10 6夹具的设计13 6.1夹具简介13 6.2夹具的作用14 6.3铣床夹具的设计特点14 6.4定位方案设计15 6.5夹具的具体设计15 7总结16 参考文献17