Herein a general introduction of a Robot Nut Runner System in the process of engine assembly is given, which consists of work position distribution, fixture design, and its working theory.

介绍了一种发动机装配过程中的机器人螺栓拧紧系统，给出了该系统工位的分配，装配过程中夹具的设计和系统的工作原理。

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Air outlet position didn't influence the air flow field temperature field, concentration field, heat lamination height and vertical distribution of temperature of work area.

排风口位置的变化，对下层气流速度场、温度场以及烟气浓度场不产生影响，对热力分层高度、工作区垂直温度分布等热舒适性问题没有影响。

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