Assessment and control method, system and device for time-energy efficiency of CNC machine tools

An assessment and control method for time-energy efficiency of computer numerical control (CNC) machine tools, comprising:

• establishing a startup rate model of a CNC machine tool through the total planned processing time, downtime and non-operation time of the CNC machine tool in a given processing cycle;
• establishing a time-energy efficiency model of the CNC machine tool by constructing an effective energy model of planned processing, target processing effective energy within operation time, and an extra standby energy model;
• establishing a relationship model of the startup rate, the extra startup frequency and the time-energy efficiency based on the analysis results of the influence of the startup rate and the extra startup frequency of the CNC machine tool on the energy efficiency of the CNC machine tool;
• monitoring the time-energy efficiency of the CNC machine tool in real time based on the established relationship model of the startup rate, the extra startup frequency and the time-energy efficiency to conduct overlimit warning for the time-energy efficiency of the CNC machine tool and control the time-energy efficiency of the CNC machine tool within a target range.