V带传动设计同济大学_机械设计大作业一

一.设计任务书 ····················································2
二.电动机的选择 ··················································2
三. V带传动的设计 ···············································2
1.确定设计功率························································2
2.选择V带类型························································3
3.确定带轮的基准直径d·················································3
4.确定中心距和V带基准长度·············································3
5.验算小带轮上的包角α ················································3
6.计算带的根数························································3
7计算单根V带初拉力的最小值(F0)min·······································4
8.计算压轴力Fp ·······················································4
四. V带轮的结构设计 ·············································4
1.V带轮的材料 ·······················································4
2.V带轮的结构形式 ··················································· 4
3.带轮的基本结构尺寸···················································4
五.小带轮装配图设计 ·············································5
（1）键的设计 ·······················································5
（2）轴端挡圈、螺栓、垫圈的设计·········································5
六.小带轮装配图 ··················································6
七.设计小结·······················································6
八.参考文献·······················································6
设 计 计 算 和 说 明 结 果