Method and system for intelligent monitoring of cnc machine tools based on industrial internet of things

A method for intelligent monitoring of a computerized numerical control (CNC) machine tool based on Industrial Internet of Things (IIoT), wherein the method is performed by an IIoT management platform of a system for intelligent monitoring of a CNC machine tool based on IIoT;

• the IIoT management platform is configured in a processor and communicates with a sensing control platform via a sensor network platform;
• the sensor network platform is configured on a communication device;
• the sensing control platform is configured in a host computer of a CNC machine and configured to control an operation of a camera and an operation of a machine monitoring device;
• the method comprises:
• obtaining appearance information of a tool based on a tool image, and storing the appearance information in a data center of the IIoT management platform, the tool image being acquired by the camera at a preset acquisition time, the preset acquisition time including a time when the tool is in a stop state;
• in response to the tool being in an operational state, obtaining operational state information of the tool and the CNC machine based on the machine monitoring device, and sending the operational state information to the data center of the IIoT management platform via the communication device;
• issuing an image acquisition instruction to the sensing control platform to control the camera to acquire a workpiece image of a workpiece at a preset frequency, and determining workpiece information based on the workpiece image;
• processing the workpiece information to generate machining quality information, and storing the machining quality information in the data center of the IIoT management platform;
• retrieving the appearance information, the operational state information, and the machining quality information from the data center, and generating tool wear information;
• issuing, based on the tool wear information, an alert via at least one of a machine warning device and an interactive screen to indicate a wear condition of the tool;
• determining a tool to be replaced based on the tool wear information, and controlling a tool replacement assembly to clip a spare tool from a spare tool box;
• and
• issuing at least one of a rotational speed adjustment instruction and a frequency adjustment instruction, the rotational speed adjustment instruction being configured to control a rotational speed of a tool holder group to adjust a machining intensity of the tool to be replaced, the frequency adjustment instruction being configured to adjust an acquisition frequency of the camera.