Research On Carbon Consumption Quantitative Calculation Of CNC Machining System

For the past few years,with the rapid development of manufacturing and information technology industry,modern CNC machining system has been gradually replacing the traditional mechanical processing machine tool.There is no doubt that,large amounts of energy and resources consumption will be produced in the process of its production and processing,and it will emit greenhouse gases-carbon dioxide to the environment directly or indirectly,producing environmental pollution problems at the same time.Aiming at the deficiency of method CNC machine tool energy consumption quantization and energy conservation in the field of mechanical processing green manufacturing,carbon consumption in the process of modern CNC machining system is studied.The key influencing factors are determined and analyzed.From the system level,the carbon consumption of the whole production process life cycle for the individual machining parts is quantified.Concrete research content is as follows:(1)The basic principle,characteristics and solving process of life cycle assessment method are introduced.The application of life cycle assessment method in environmental management and carbon consumption research is expounded.(2)According to CNC machining system energy consumption unit,energy consumption calculation model boundary of modern CNC machining system is defined and Carbon consumption boundary model is established.The carbon consumption characteristics of CNC machining system are studied.CNC system energy consumption characteristics are analyzed especially the dynamic energy consumption characteristics.Then the carbon consumption list of various forms in the processing is established.(3)Carbon consumption modeling approach for CNC machining system is studied in the process of individual machining parts,based on carbon consumption characteristics.Integration model of CNC machine carbon consumption is built up.(4)Theory and application of the decision-making trial and evaluation experiment method(DEMATEL method)are Introduced.According to the analytic hierarchy process method(AHP),19 factors affecting the energy consumption of the CNC machining system are determined.With the help of Decision making trial and evaluation experiment method,matrix method,the influencing factors are analyzed.Considering influence degree,affected degree and the centrality,four key factors including the machining precision,efficiency,cutting speed and feed rate are determined.And then,efficiency and feasibility of the DEMATEL model method is validated by experimental research.(5)Taken YD31125CNC6 CNC gear hobbing machine for example,taking advantage integration model for CNC machining system energy consumption,carbon consumption quantitative calculation method of the whole production process life cycle is studied for individual machining parts based on life cycle assessment method.According to analysis of carbon consumption life cycle assessment,carbon consumption is quantitative calculated of all energy consumption units in the process of CNC machining gear hobbing machine processing.Total carbon consumption of the whole production process life cycle is obtained in YD31125CNC6 CNC gear hobbing machine for individual machining parts.Finally,evaluation and improvement on the impact assessment are analyzed.