机械原理课程设计台式电风扇的摇头装置.doc

江西农业大学机械原理课程设计 第 PAGE 1 页 共 NUMPAGES 12 页 目 录 1．台式电风扇摇头装置的功能与设计要求·································3 1.1工作原理及工艺过程················································3 1.2功能分解··························································3 1.3原始数据及设计要求················································3 1.3.1 原始数据 1.3.2 设计要求····················································· 1.4设计任务··························································3 2．执行机构的设计·····················································4 2.1（方案Ⅰ）··························································4 2.2（方案Ⅱ）··························································4 2.3（方案Ⅲ）··························································5 2.4（方案Ⅳ）··························································6 3．执行机构的辅助构件设计 ············································6 3.1滑销控制机构（方案Ⅰ） ············································6 3.2齿轮控制机构（方案Ⅱ）··············································7 4．减速机构的设计·····················································7 4.1蜗杆减速机构（方案Ⅰ）··············································7 4.2锥齿轮减速机构（方案Ⅱ）············································7 4.3行星轮系减速机构（方案Ⅲ）··········································7 5．方案的确定························································8 5.1原动机的选择·····················································8 5.2传动方案确定·····················································8 5.3有关参数及相关计算 ···············································8 5.3.1相关计算························································8 5.3.2传动构件的尺寸确定·················································8 6．尺寸与运动综合····················································9 6.1执行机构尺寸设计··················································9 6.2验算曲柄存在条件即最小传动角······································10 6.2.1曲柄存在条件·····················································10 6.2.2最小传动角验算···················································· 7.系统总图···························································11 8.总体评价····················