机械设计课程设计二级直齿圆柱齿轮减速器 学 院： 专 业： 班 级： 学 号： 姓 名： 目录 一、 传动方案的确定 ···················3 二、 电动机的选择 ····················52.1 电动机类型和结构形式选择 ············52.2 确定电动机功率·· ·················52.3 确定电动机型号 滚筒工作转速·············5三 、 计 算 总 传 动 比 及 分 配 各 级 的 传 动比············53.1 计算总传动比·· ··················53.2 分配各级传动比·· ·················6 四 、 运 动 参 数 及 动 力 参 数 及 传 动 零 件 的 设 计 计算········64.1、计算各轴转速····················64.2、计算各轴的功率···················64.3、计算各轴的扭矩···················6 五、 带的设计计算 ····················75.1、确定计算功率 Pca·· ················75.2、选择 V 带的带型·· ·················75.3、确定带轮的基准直径 dd=及验算带速 v ·······75.4、根据 V 带的中心距和基准长度 Ld············75.5、验算小带轮上的包角·················75.6、计算带的根数 ··················75.7、计算单根 V 带的初拉力的最小值 ··········85.8、计算压轴力 ··················85.9、带轮结构设计··················8 六、 齿轮的设计计算 ··················9 第一对齿轮：6.1、选定齿轮类型、精度等级、材料及齿数·· ······96.2、按齿面接触强度设计················106.3、计算相关数值···················106.4、按齿根弯曲强度设计················116.5、设计计算·····················126.6、齿轮结构设计···················13第二对齿轮6.7、选定齿轮类型、精度等级、材料及齿数········146.8、按齿面接触疲劳强度设计·········...
