A STUDY OF OPTIMIZATION OF JOINT CORNOR MACHINE MAINTENANCE A CASE STUDY OF AUTOMOBILE DOOR GLASS

Abstract

The objective of this study is to increase the efficiency of machine maintenance per corner by reducing machine downtime by 60%, increasing machine efficiency by 10% by using a sample factory that produces automotive glass door gasket in Thailand Applying the Pareto Diagram, 5 Why Analysis, Cause and Effect Diagram are to collect data and analyze problem. The problem analysis has found that a sample factory do not has the maintenance management system. and operation manual because a maintenance was operated only when the machines stopped working on site. This study therefore proposed a Dynamic Preventive Maintenance machine maintenance system by using PLC program to count the number of working hours according to the actual working time. Moreover, the inventory of Spare Parts have been created the reported of the common parts and the noncommon parts by using ROP (Reorder Point) as the formula for calculating procurement and storage. The system has been implemented and compared the results before and after operations, which are found that the average mean time between machine failures (MTBF) is an increase of 86.21%. The average repair time for (MTTR) is a 75% reduction rate. The machine readiness rate representing an increase of 10.12%