Application of the SMED method for improving the CNC machine workplace production process in the scope of "waiting" MUDA

Purpose: The purpose of this work is to analyze the actual changeover time of a given machine and apply the developed changes. Design/methodology/approach: Properly designed and implemented, the SMED method allows you to limit the setup time for a given machine. Retrofitting in Lean optics is one of the activities that does not add value to the organization, because of its waiting time. Findings: As a result of the changes implemented, it was possible to determine measurable effects for the company in the category of "waiting" in the Muda aspect. Research limitations: The presented analysis has a spatially and temporally limited dimension, which could be the trigger for expanding the research in the future. Originality/value: This article presents actions leading to the optimization of the Computerized Numerical Control (CNC) machine production process by using one of the Lean Management concepts - in this case, it is the Single Minute Exchange of Die (SMED) method.