摘 要
本次设计的题目是“弹射式自动投石器的设计”，通过利用凸轮滚子推杆机构的工作原理，来实现该投石器的常规目的。   
该弹射式自动投石器主要有机架，投射机构，装填筒等部件组成，通过电机驱动弹射式自动投石器主体部分旋转，其上面安装有传感器，当感应到了目标位置，就会通过控制系统控制电机的旋转，然后在凸轮滚子推杆机构的作用下来进行投射，通过此种结构设计，能够很准确地进行投射，完全实现了全自动化投射。
关键词：弹射式自动投石器 传感器 机构 投射

Abstract
   This design topic is the design of ejection type automatic sling, by using the principle of roller cam follower mechanism, to achieve the purpose of conventional sling. 
    The ejection type automatic sling frame, projecting device, the filling tube parts, through the motor drive eject type automatic cast stone body rotation, the above installed a sensor, when the induction to the target location, you will pass the control system to control the motor rotation, then in roller cam push rod mechanism down project, through such kind of structure design, can very accurately projected, and the full realization of the automatic projection.
Key words: ejection type automatic projection sensor body projection
 目 录