基于数字孪生的数控机床虚实交互监控系统设计

Design of virtual and real interactive monitoring system for CNC machine tools based on digital twins

针对传统的监控技术和虚拟仿真技术无法直观体现数控机床实际运行状态的问题,结合新一代信息技术和数字孪生理念,设计了基于数字孪生技术的数控机床虚实交互监控系统.以某型号数控机床为例,首先通过Portal软件对系统架构和相关功能进行设计,在此基础上将传感器采集的信息通过PLC和以太网传输到系统中进行模拟量转换;然后通过OPC-DA将系统中的数字孪生数据与数字孪生体相连接,实现信息的接收和传输,完成虚实结合;最后采用该方法对机床的振动信号进行实时监控和远程控制面板的设计.实验结果表明,利用数控机床虚实交互监控系统和数字孪生体对加工过程进行双重监控可以更加有效、直观地体现机床的实际运行状态,并且利用虚实交互监控系统对数字孪生体进行虚拟控制可以进一步扩展数字孪生技术的应用领域.

Aiming at the problem that the actual operating status of CNC machine tools is not directly reflected by traditional monitoring technology and virtual simulation technology,a virtual-real interactive monitoring system for CNC machine tools based on digital twins technology is designed by combining the new generation of information technology and the concept of digital twins.In addition,taking a CNC machine tool as example,the system architecture and related functions are first designed through Portal software.Based on that,the information collected by the sensor is transmitted to the system through PLC and Ethernet for analog conversion;and the digital twins data in the system is connected with the digital twins to realize the reception and transmission of information,then the combination of virtual and real are completed through OPC-DA.Finally,this method is used to monitor the vibration signal of the machine tool in real time and design a remote control panel.The experimental results show that the system using the virtual-real interactive monitoring system and digital twins of the CNC machine tool to double monitor the machining process can reflect the actual operating status of the machine tool more effectively and intuitively.Meanwhile the digital twins is virtually controlled by the virtual-real interactive monitoring system,and the application field of digital twins technology is further expanded.