- 1 - 西 北 工 业 大 学 机 械 原 理 课 程 设 计 说 明 书 --包装机推包机构运动简图与传动系统设计 指导老师 ： 班 级 ： 学生姓名 ： 学 号： 组 员： 目 录 - 2 - 一、设计题目和要求··············································3 二、设计方案的选定··············································3 三、机构的尺寸设计··············································8 1、曲柄滑块结构的尺寸计算···································8 2、凸轮尺寸设计·············································9 四、电动机的选择及传动方案的设计······························10 1、电动机的选择············································10 2、传动方案的设计··········································10 3、总装配件图··············································11 五、设计小结··················································12 六、参考资料··················································13 七、组员任务分配··············································13 - 3 - 一、设计题目和要求 现需要设计某一包装机的推包机构，要求待包装的工件1（见图1-1）先由输送带送到推包机构的推头2 的前方，然后由该推头2 将工件由a 处推至b 处（包装工作台），再进行包装。为了提高生产率，希望在推头2 结束回程（由b 至a）时，下一个工件已送到推头2 的前方。这样推头2 就可以马上再开始推送工作。这就要求推头2 在回程时先退出包装工作台，然后再低头，即从台面的下面回程。因而就要求推头2 按图示的abcde 线路运动。即实现“平推—水平退回—下降—降位退回—上升复位”的运动。 设计数据...
