| dc.description.abstract | In recent years, AVI (Auto Visual Inspection) has been playing an important part in the industry of Printed Circuit Board (PCB) due to the required high quality of finished products from the clients′ aspect. Besides, the investment in equipment plays a key role in the overall costs. Therefore, how to increase the efficiency of AVI in order to cut down on the time of re-tests, which are time-consuming, has become a hot issue nowadays. An efficient inspection model closely influences the appropriateness of the setting of production parameters. It is essential that fine products will not be falsely detected but will adapt to the disturbance of tolerance variations from the products themselves. As a result, it is crucial to design a stable parameter setting which will not be affected by the variations among products.to reach such a goal, this study adopts Taguchi experiment design method to optimize the design of production parameter settings in order to increase the efficiency of inspections in limited time constraints, resources, and numbers of tests.
In the robust concept of Taguchi experiment design method, the welding shortcomings of IC carrier boards will be examined visually to improve detection efficiency.This study aims at maximizing the percentage of the visual inspections of fine finished products by using the L18 orthogonal table configuration, and through converting data types from percentage to additive information in the method of Taguchi experiment design. By testing the qualitative reaction value and calculating the S/N ration, the best parameter setting can be found.
In this study, the optimal combination of the parameters of the equipment to confirm the test. Production results showed that the appearance of using the best parameter testing equipment, visual inspection of personnel due to false online point reduction reasons, the detection time is reduced by about 10%, so that visual inspection of the machine can improve production capacity by about 20%. Finally, the manufacturing steps can be effectively applied, the relative reduction ratio occur Heavy Industries. | en_US |