การประยุกต์ใช้แนวคิดลีนเพื่อปรับปรุงประสิทธิภาพการให้บริการ หจก.สหายช่าง เซล แอนด์ เซอร์วิส

Abstract

The general purpose of this independent study was to applying Lean Concept in Service Efficiency Improvement of Sahaichang Sale and Service Limited Partnership. At this moment, the organization is facing delayed projects hands over caused by loss in the process. Those problems extremely affect the efficiency of service. The production process includes Aluminum wire cutting process, Punching process, Frame assembly process, Glass cutting process and The assembling of the door leaf. This study collect data of the production process for presenting in value stream mapping, analyzing producing area layout, flow process chart as well as analyzing production loss and types of activity processes. Then, Yamazumi Chart, 5G technique, 5 Why’s Analysis technique, 5W1 H technique and ECRS principle used to shorten the production time. The goal of this study was that the artisan employees had to produce 2 lower sliding door per day without employees having to work overtime. And can also meet the needs of consumers in a timely manner. The result of study showed that times used in production time could be saved from 291.53 minutes per batch to 228.80 minutes steps accounted for 21.52% . while the movement distance of working was reduced from 5 5 meters to 3 3 meters steps accounted for 60% . The efficiency of the production base on %VA can be increased from 68.70% to 69.98%. The artisan employees were able to increase the production of lower sliding door from 1.37 sets per day to 2.48 sets per day. Moreover, the direct material cost was saved 153 Baht per sets as well as the budget of direct labour cost was saved 58.75 Baht per set. As a result, The production cost after adjustment total reduction of 162,624 baht per year.