Research on key technologies of digital twin cloud platform: a case study of rebar thread production line

Faced with the problem of the “black box” in the traditional workshop manufacturing industry, this study focuses on the rebar thread production line, and explores the construction and application of the production line cloud platform based on digital twins. First, the overall framework of the production line cloud platform was constructed. Then, the digital twin modeling technology was explored from four perspectives: geometry, physics, behavior, and rules. Additionally, an Internet of Things (IoT) platform was constructed to enable bidirectional mapping between the physical system and the virtual model using data as the driving force. Finally, a digital twin prototyping system for the rebar thread production line with integrated hardware and software was developed, relying on the sawing and cutting head line of a one-dragger. Through actual engineering cases, the proposed theory and technology were tested, verifying their effectiveness and practicability. The study demonstrates the application value of digital twin technology in remote monitoring, health operation and maintenance, quality inspection, and intelligent production, providing a certain reference for the realization of intelligent manufacturing of rebar processing.