OVERALL EQUIPMENT EFFECTIVENESS AND IMPLEMENTATION IN A MANUFACTURING FACILITY

Abstract

In today's competitive conditions, the importance of efficiency and performance has increased for businesses. Accordingly, it can be said that Overall Equipment Efectiveness (OEE) practices have increased in companies. In this study, the OEE values of a machine that takes part in the semi-product preparation process in a tire manufacturing facility are calculated and it is aimed to improve these values. Firstly, the current state, working principle and functioning of the machine have been examined. Time study was performed on the machine and OEE calculations were made based on the obtained values. It has been determined that the currently efficiency values are below the targeted value. For this reason, the downtimes in the machine have been classified and suggestions for improvement are presented. A simulation model has been prepared in order to predict the consequences that will occur in case the proposal for changing the shift order is implemented. In the outputs of the model, it was determined that the idle times decreased and the operation times increased. Accordingly, it was decided to implement the improvement suggestion. OEE calculations were made again for the new situation and it was determined that the efficiency value of the machine was above the targeted level in the proposed method. In addition, the improvement made positively reflected in each of the "availability", "performance" and "quality" components of OEE. In addition, in the new case, as the idle time of the machine is eliminated, a planned time of 60 minutes has been gained in the machine and accordingly the scrap rates have decreased. As a result, in this study, the contribution that OEE will provide to the companies if it is implemented correctly and systematically has been shown with a real application.