机械设计 减速器齿轮箱 设计手册范本.doc

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································································5三、计算总传动比及分配各级的传动比···················································6四、运动参数及动力参数及传动零件的设计计算········、计算各轴转速····················、计算各轴的功率···················、计算各轴的扭矩···················6五、带的设计计算····················、确定计算功率Pca··················、选择V带的带型···················、确定带轮的基准直径dd=及验算带速v·······、根据V带的中心距和基准长度Ld············、验算小带轮上的包角·················、计算带的根数··················、计算单根V带的初拉力的最小值··········、计算压轴力··················、带轮结构设计··················8六、齿轮的设计计算··················9第一对齿轮:、选定齿轮类型、精度等级、材料及齿数········、按齿面接触强度设计················、计算相关数值···················、按齿根弯曲强度设计················、设计计算·····················、齿轮结构设计···················、选定齿轮类型、精度等级、材料及齿数········、按齿面接触疲劳强度设计··············、确定公式数值······························································································18七、轴的设计及强度校核··············`··、轴的选材·····················、各轴最小直径估算·················、装配工作底图的设计················、高速轴的结构设计及强度校核·············、中速轴的结构设计及强度校核·············、低速轴的结构设计及强度校核·············、轴承润滑方式确定················30八、键联接的选择及校核计算·················、高速轴(A型键)···················、中速轴(A型键)···················、低速轴(A型键)···················31九、设计小结·················``·····32十、参考资料························,具有结构简单、制造成本低的特点。V带传动布置于高速级,能发挥它的传动平稳、缓冲吸振和过载保护的优点。但本方案结构尺寸较大,带的寿命短,而且不宜在恶劣环境中工作。因而,在对尺寸要求不高、环境条件允许的情况下,可以采用本方案。。)传动装置的总效率查表得:=(传动滚筒),=(V带),=,=,=。××××=)工作机所需电动机功率由公式得:Pd=Fv1000ή总=2000××==60*1000vπD=60*1000**350=