减速齿轮箱设计计算

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1、目录一、传动装配的总体设计1.1电机的选择················································11.2求传动比··················································21.3计算各轴的转速、功率、转矩·······························2二、齿轮的设计2.1原始数据··················································32.2齿轮的主要参数············································32.3确

2、定中心距················································42.4齿轮弯曲强度的校核·······································52.5齿轮的结构设计············································7三、轴的设计计算3.1轴的材料的选择和最小直径的初定····························83.2轴的结构设计··············································83.3轴的强度校核····················

3、··························10四、滚动轴承的选择与计算4.1滚动轴承的选择21············································144.1滚动轴承的校核············································14一、键连接的选择与计算5.1键连接的选择··············································155.2键的校核··················································15二、联轴器的选择6.1联轴器的选择··

4、············································166.2联轴器的校核··············································16三、润滑方式、润滑油型号及密封方式的选择7.1润滑方式的选择············································167.2密封方式的选择············································17四、箱体及附件的结构设计和选择8.1箱体的结构尺寸········································

5、····178.2附件的选择················································18五、设计小结···········································19十、21参考资料·············································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)参数48002.5210结构简图1传动装配的总体设计1.1电机的选择1.1.1类型：Y系列三项异步电动机1.1.2电动机功率的选择假设：—工作机所需功率,kw;21

6、—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：1.1.3电动机转速的选择以及型号的确定方案号电动机型号额定功率（kw）同步转速（r/min）满载转速（r/min）总传动比1Y180L-61510009704.26辅助计算：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。1.1求传动比211.1计算各轴的转速n、功率p、转矩T1.1.1各轴的转速1.1.2各轴的输入功率1.1.3各轴的输入转矩2齿轮的设计2.1原始数据材料牌号热处理

7、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2.2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。21———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=0.75~0.88，取=0.80；—载荷系数，一