Remanufacturing Assessment of Machine Tools under a Circular Economy Perspective: A Resource Conservation Initiative

Abstract

Machine tools are recognized as goods-generating equipment that constitute the realm of manufacturing facilities, providing the means of production for the generation of consumer products. This work explores the possibility of implementing sustainability concepts, employing criteria from a circular economy in the design and manufacturing of new equipment, using existing structural elements as the basis for the development of these machines. Stamping presses for automotive body panels were considered as the focus of this study. A quantitative evaluation of the possibilities for reusing existing components was developed using an algebraic tool, through the creation of algorithms that facilitate the comparative analysis of production costs and delivery lead times. Additionally, a case study was conducted to assess the capability of these algorithms to provide results, presented as comparative indicators that should be taken into consideration and may assist in the decision-making process regarding the implementation or not of the possibilities presented by the study. The simulation performed proved to be proficient, providing data that can guide decision making regarding the reuse of the chosen structural elements, based on their soundness verified through inspections conducted by the machine designers.