文档介绍：目录传动装配的总体设计电机的选择················································1求传动比··················································2计算各轴的转速、功率、转矩·······························2齿轮的设计原始数据··················································3齿轮的主要参数············································3确定中心距················································4齿轮弯曲强度的校核·······································5齿轮的结构设计············································7轴的设计计算轴的材料的选择和最小直径的初定····························8轴的结构设计··············································8轴的强度校核··············································10滚动轴承的选择与计算滚动轴承的选择············································14滚动轴承的校核············································14键连接的选择与计算键连接的选择··············································15键的校核··················································15联轴器的选择联轴器的选择··············································16联轴器的校核··············································16润滑方式、润滑油型号及密封方式的选择润滑方式的选择············································16密封方式的选择············································17箱体及附件的结构设计和选择箱体的结构尺寸············································17附件的选择················································18设计小结···········································19十、参考资料·············································20机械设计课程设计计算说明书已知条件:项目运输带拉力F(N)运输带速v(m/s)卷筒直径D(mm):Y系列三项异步电动机电动机功率的选择假设:—工作机所需功率,kw;—电动机的额定功率,kw;—电动机所需功率,kw;电动机到工作机的总效率为,。则:查表可得:所以:(kw)同步转速(r/min)满载转速(r/min)总传动比1Y180L-:因为本设计为单级斜齿圆柱齿轮减速器的设计,总传动比应在3-5左右,所以应按方案二选择电动机。查表可得:外伸轴长度80mm,直径38mm,额定功率和满载转速见上表。求传动比计算各轴的转速n、功率p、转矩T各轴的转速各轴的输入功率各轴的输入转矩齿轮的设计原始数据材料牌号热处理方法强度极限屈服极限硬度45正火560200169~217调质580220229~286其中小齿轮45号钢调质,大齿轮45号钢正火齿轮的主要参数由上述硬度可知,该齿轮传动为闭式软尺面传动,软尺面硬度<350,所以齿轮的相关参数按接触强度设计,弯曲强度校核。———由教材图5—29查得:小齿轮;大齿轮。所以:式中:—重合度系数,对于斜齿轮传动=~,取=;—载荷系数,一般近视取k=~,因是斜齿轮传动,故k取小=;—齿宽系数,对于软尺面(<350),齿轮相对于轴承对称布置时,=~,取=1;—齿数比,对于斜齿轮。所以:确定中心距式中:—小齿轮的齿数;—大齿轮的齿数;—齿轮的螺旋角;—斜齿轮的模数。对于软尺