基于软PLC控制的摆动式夹紧反力臂装置设计

摘要

针对传统拧紧机构在拧紧过程中自动化程度低,拧紧不可靠等问题,设计了一种摆动式气动夹紧反力臂装置.详细描述了该装置的机械结构、工作原理及控制系统的开发与实施.该装置的控制方式应用了一种基于西门子PC677工控机的软PLC模块,对在该装置中进行拧紧的工件的状态进行实时检测和反馈,同时对工件的动作进行校正和控制.整个系统可以在软PLC的控制下,快速、准确地完成工件的夹紧、螺栓拧紧等操作,较好地替代了传统PLC.目前该装置已用于装配线上试运行,运行状态良好,控制系统稳定.%During the screwing process, the traditional anti-arm screwing mechanism can′t finish the location and screwing automatically, the paper proposed an anti-arm swing pneumatic clamping device. The structure designing, working principle and control system of the device are described in detail. Moreover a soft PLC controlling method based on Siemens PC677 was applied for this device, which can detect, feedback, rectify and control the work exactly. Ultimately it can finish the process of clamping and screwing quickly and accurately, replace the traditional PLC well. The whole system has been run in assembly line, the system works normally, and the control system running is stable.