Abstract:
The objective of this thesis is about the study of over 85% improvement of overall equipment effectiveness for motor factory. The total studied departments are 6 which are Coil 1, Coil 2, Pump/Die/Cover, Frame/Painting, Shaft/Rotor and Assembly. The total production lines and numbers of machine are 17 and 180 respectively. The data collection was conducted 3 months in advance before the study from October-December 2008 by letting the chief of each department fill in the daily raw data of machine using. After that the raw data was calculated for the overall equipment effectiveness of each department; 79.70% for Coil 1, 85.11% for Coil 2, 67.87% for Pump/Die/Cover, 88.62% for Frame/Painting, 66.10% for Shaft/Rotor and 64.33% for Assembly with the average for all departments at 75.99%. Pareto and fish-bone diagram was used to analyst the cause of problem and suggested the improvement methods as follows; 1) Calculation adjustment and create standard table for OEE record. 2) Set standard production time for each product and update when it is improved. 3) Organize training course for maintenance staffs. After implementation for the improvement plan, the data collection was re-conducted for 3 months from January-March 2009. The overall equipment effectiveness was increased as follows; 86.89% for Coil 1, 93.33 % for Coil 2, 87.25 % for Pump/Die/Cover, 95.38 % for Frame/Painting, 85.51% for Shaft/Rotor and 86.70% for Assembly. The average for all departments was 88.68% which was increased at 12.69%.