การปรับปรุงกระบวนการผลิตชิ้นส่วน U-RIB ANGLE: กรณีศึกษาบริษัทผลิตอุปกรณ์เครื่องมือทางการเกษตร A

Abstract

The research aims to improve the production process of U-Rib angle parts of hallow discs by applied the principles of work-study, Cause and Effect Diagram in data collection, and problem analysis. From the study production process of U-Rib angle parts, the steps are: 1) cutting steel sheets and forming them initially with laser cutting, 2) bending them into a U shape, 3) drafting the workpiece design using a fixture layout, 4) cutting excess materials according to the layout using the fixture layout, and 5) welding assembly them with other parts. From these production steps, there are excessive processes, namely the workpiece layout with the fixture layout and cutting excess materials, which results from the incorrect size by the laser cutting process along with low-quality bending. Addressing these issues, the ECRS principle was applied to eliminate unnecessary work steps. This was achieved by first utilizing sheet metal drawing principles to determine the correct blank size prior to laser cutting, and subsequently by improving the bending process through the design and implementation of a Rolla V Die. As a result of improving the production process, the number of production steps was reduced from 13 steps to 8 steps, and the production time decreased from 7 minutes 11 seconds to 5 minutes 35 seconds, a reduction of 1 minute 36 seconds. This represents a 22.25% reduction in production process time and a reduction in scrap materials loss by 0.23 kg/piece or 5.64 percent loss reduction, Costing around 1,380 bath/month at a capacity of 200 pieces/month.