| Abstract [eng] |
In order to maintain its profitability in a business environment that is becoming more competitive day by day, the automotive industry has made it its primary goal to increase the efficiency of automatic production lines, which have become the industry standard, and to reduce the amount of scrap and line downtime, while remaining within the quality limits demanded by the customer. Companies are always very anxious to examine the improvement potential of each station and each process step in the production lines and carry out development studies on areas where the potential is seen. This particular study provides practical applications of the process improvement of the wastegate actuator assembly process following the DMAIC approach. During the flow of the DMAIC circle, several different tools were used Pareto chart, control chart, Process Feasibility Analysis, and Design of Experiment which allowed to define the problems, measure the effects of actual aspects, analyze in a wider perspective to understand the potential solutions, to improve the focused process by applying the solution option properly, and finally to control the improved process to understand if the solution create an effect to key points. Suppression printed circuit board failure was selected as a focus point of the study since it was stated as the most popular failure during the control period of the assembly process. DMAIC methodology was applied to reach the target improved key values, and based on the results, the pressing tool was updated to decrease the Suppression printed circuit board failure by increasing the adaptiveness of the tool to serve in optimum quality in the requested tolerance range by the customer. A new data set was provided by the assembly line of Company “X” after updated tool implementation, and it was proved the effective process improvement implementation at the assembly line of the wastegate actuator was established. Finally, the targeted values were achieved and implemented at company X, and as a writer of this study, it was leaded by me as a quality specialist in this company. |
