- 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 ············