AN ANALYTICAL APPROACH FOR DETERMINING THE ENVIRONMENTAL-IMPACT OF MACHINING PROCESSES

This paper presents a model of the environmental impact of machining processes. The analytical model integrates aspects of the process mechanics, wear characteristics and lubricant flows. The quantifiable dimensions in this analysis include energy utilization, process rate, workpiece primary mass flow, and secondary flow of process catalysts. The generation of multiple waste streams can be compared by examining factors such as toxicity and flammability. The sensitivity of environmental factors to variations in operating parameters such as depth of cut, speed, feed, and tool rake angle are examined. The prioritization of environmental factors were evaluated for both high-rate transfer line and flexible job shop environments through utility analysis. This model can serve as a framework for decision-making in environmentally-conscious manufacturing, including the design of parts for machining, process planning and the selection of operating parameters.