机械设计——减速器齿轮箱_设计手册

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1、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：33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

2、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··············

3、···75.6、计算带的根数··················75.7、计算单根V带的初拉力的最小值··········8335.8、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···

4、··················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··············146.9、确定公式数值···················146.10计算相关数值···················156.11按齿根弯曲强度设计················166.12设计计算·····················166.13齿轮结构设计···················18七、轴的设计及强度校核·····

5、·········`··187.1、轴的选材·····················187.2、各轴最小直径估算·················187.3、装配工作底图的设计················19337.4、高速轴的结构设计及强度校核·············197.5、中速轴的结构设计及强度校核·············237.6、低速轴的结构设计及强度校核·············267.7、轴承润滑方式确定················30八、键联接的选择及校核计算·················308.1、高速轴（A型键）··········

6、·········308.2、中速轴（A型键）···················308.3、低速轴（A型键）···················31九、设计小结·················``·····32十、参考资料························3233计算及说明主要结果一．传动方案的确定传动装置选用V带传动和闭式二级圆柱齿轮传动系统，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

7、以采用本方案。二．电动机的选择2.1电动机类型和结构形式选择按照已知的动力源和工作条件选用Y系列三相异步电动机。2.2确定电动机功率1）传动装置的总效率查表得：=0.97（传动滚筒），=0.97（V带），=0.99，=0.98，=0.99。0.97×0.97×0.994×0.982×0.99=0.8592）工作机所需电动机功率由公式得：Pd=Fv1000ή总=2000×1.61000×0.859=3.725kw2.3确定电动机型号滚筒工作转速nw=60*1000vπD=60*1000*1.6π*350=87.36r/min按推