This application introduces an automated screw-fastening solution based on robots, screwdrivers, and PLCs, specifically designed for the production and assembly of control boxes. Through efficient cycle control, positive mounting installation, stable integration of screwdrivers and PLC equipment, and reliable Modbus TCP communication protocols, this solution achieves automation, high efficiency, and precision in screw-fastening operations for control boxes. It effectively resolves issues such as stripped or broken screws caused by inconsistent screw batches.