Spindle 3D Visualization And State Monitoring Based On Digital Twin

Manufacturing is a key component of the country’s economic growth.With the support of "Made in China 2025",it has been developing towards digitization,networking and intellectualization.At the same time,every nation in the world is increasing its own innovation efforts to advance its own manufacturing industry.For the fourth industrial revolution to take place,the key problem of intelligent manufacturing is how to use the creation of an information physical system,realize the interconnectedness and integration of physical space and digital space.In this context,the digital twin technology that emerges at the right time gradually becomes the key to achieving this goal.The performance of the mechanical spindle,which is the main component of CNC machines,has a significant impact on the accuracy and reliability of machine tool machining.This paper is completed with the help of the special national science and technology initiative "Study on the reliability growth technology of three types of functional components".The advanced digital twin manufacturing concept is applied to the NC machine tool spindle,and the 3D visualization and condition monitoring technology of the digital twin drive spindle is studied.The functional modules of the prototype system are designed and developed,and the real-time monitoring of the spindle status is effectively realized.The main research objectives of this paper are as follows:(1)The overall scheme of the spindle digital twin system is designed.First,the requirements and principles of the spindle digital twinning system are proposed,and the architecture of the whole system is designed,which divides the functional components of the system.Then,by comparing the characteristics and advantages of different software platforms,tools and programming languages for system development are selected.Finally,the learning process and algorithm flow of SOM network are introduced,which serves as a theoretical basis for realizing equipment fault warning.(2)3D visual modeling of spindle based on digital twinning.The virtual model of the main axis was constructed by joint modeling with 3D mapping software.First,in Catia environment,the different parts of the spindle were modeled and assembled.After that,the assembly model is imported into 3ds Max for material mapping and light weight processing.Then,the model was added to Unity3 D platform and sky box and light source components were added to build the system scene and complete the rendering of the virtual spindle model.Finally,the dynamic behavior of the virtual model is studied to realize the virtual effect of real-time running of the spindle.(3)Design the architecture of the real-time data drive system and complete the real-time drive of the virtual spindle.First,by selecting appropriate indexes for spindle status monitoring,real-time operation data of the spindle is collected by a data acquisition system.Then,the connection between the virtual spindle and the system is established to achieve real-time synchronous operation between virtual models and physical entities.Finally,the SOM algorithm based equipment fault warning process is designed,and the running data is used to verify the example so that the equipment can function normally.(4)Development of digital twin spindle system based on Unity3 D platform.First,through interface development and GUI visualization component design,3D visualization and natural and real-time human-computer interaction effects of the equipment are realized.Then,the data interaction between the digital twin system and the spindle is used to complete the evaluation of the spindle running state and effect display.Finally,the main functions’ Testing and checking of the system’s running performance is carried out before the system is released.