面向数控加工的数字孪生系统

Digital Twin System for CNC Machining

在智能制造的大背景下,智能化是数控加工的一个重要发展方向,数字孪生的出现为传统数控加工的智能化提供了新思路,如何利用数字孪生技术增强数控加工的智能性,这一点还缺乏深入研究。从感知、理解、推理和服务4个层面详细论述了数字孪生技术在数控加工智能化上的增强作用,并与传统加工过程进行对比,结合自主研发的GrapeSim数字孪生系统,说明数控加工智能化的技术实现路径。该系统已在中国商飞生产线上得到验证,进行了大量针对实际加工零件的测试工作,显示出了对加工智能化的提升效果和数字孪生系统的实用性。

Under the circumstance of intelligent manufacturing,CNC technology is developing towards more intelligent.The appearance of digital twin provides a new idea for the intellectualization of traditional NC machining.It is still lack of in-depth research that using digital twin to enhance the intelligence of NC machining.This paper discusses in detail the enhancement of digital twin technology in the intellectualization of NC machining from four aspects of perception,understanding,reasoning and service,and compares it with the traditional machining process.Through the introduction of independently developed digital twin system GrapeSim,the realization method of intelligent NC machining technology is described in detail.This system has been verified in COMAC,and a large number of tests have been carried out for actual machining parts,showing the improvement of machining intelligence and the practicability of digital twin system.