关键词: 生命周期评价, 机床, 碳排放, 特性方程

Abstract: According to the analysis of product structure and life cycle characteristics of machine tools, a method for assessing the carbon emissions of machine tools lifecycle was introduced based on the principles of Life Cycle Assessment (LCA). It was used to describe and calculate the carbon emissions of machine tools lifecycle in different stages quantitatively, and the influencing characteristics of life cycle stages was also analyzed. This method divided carbon emission of machine tools lifecycle into four stages, manufacturing, using, transporting and recycling. It also divided carbon emission characteristics into fixed emissions and varied emissions. The linear functions were established. Carbon emission efficiency was proposed to describe changing feature for carbon emission of machine tools. The validity of the method was demonstrated by the calculation and characteristic analysis of carbon emissions combined common numerical control gear hobbing machine tool with a high-speed dry cutting one.

Key words: life cycle assessment, machine tools, carbon emissions, characteristic equation, carbon efficiency