| Abstract [eng] |
The LEAN methodology is widely used in various manufacturing enterprises. One of the most competitive industries is automotive. Electronics production is advanced, however, the changeover process between different types of products is time-consuming. 5 LEAN methods were analyzed and described. The 5S method is a practice used to ensure a tidy and clean manufacturing environment. Spaghetti diagrams analyze excessive movements performed during production processes. Poka Yoke method is used to reduce the possibility of human errors. Kanban raw material scheduling system used to ensure just-in-time production. SMED method LEAN management tool used to reduce duration of the changeover. Changeover is time time-consuming process where excessive movement can cause downtimes which increase production costs. The goals of this research are to compare production processes applied in changeover, choose relevant and suitable production management methods, compare the results of the changeover process before and after the application of the SMED method, and perform cost-effectiveness analysis. Various scientific sources that apply SMED were analyzed. The SMED method has a major impact on different production enterprises affecting cost saving, waste reduction, and improved productivity. The methodology was created according to examples applied in manufacturing companies. The changeover process was analyzed in an automotive electronics company that produces parts for major players in the market. Changeovers were analyzed in two production Surface Mount Technology lines using SMED methodology. Both SMT production lines were compared, and it was concluded that the same solutions were to improve the changeover process. The solutions were proposed by applying 5S and spaghetti diagram methods. Applied SMED method and solutions reduced changeover time resulting in increased productivity and cost savings. SMED method reduces downtimes and improves changeover efficiency and flexibility. |
