| Summary: | 碩士 === 華梵大學 === 工業管理學系碩士班 === 90 === The market demand has driven the production environment toward customers oriented. This results in the production in the direction of reduced quantity and increased product variation. The balance issues among workstations in the process planning become a major focus to ensure the company’s market competition. Significant variation of DIP devices was observed during the manual insertion in the PCB assembly process. This phenomenon causes the manual dispatching of components to workstations problematic. The production schedule could be delayed for new products and/or existing productions when an engineering change is required. Besides, the consistency of dispatching results are not well controlled between different engineers especially as the primary personnel resigned.
This research is a joint effort between academics and industry in the electronic packaging/assembly domain. A knowledge management system constructed with Visual Basic software is developed to suggest a desire tasks dispatching scenario. This system requires input files such as bill of materials, component layout files, placement orientation, operators’ familiarity, PCB travel direction, etc. Constraint rules were established through the collection of knowledge from engineers and experience from operators. Factors considered for precedence rules are habitual and motion study related. The specific constraints under study included components groups, component height classes, coordinates, etc. The corresponding process cycle time, line efficiency, throughputs are provided. This system also generates a graph based standard operation procedure and has been implemented in practical production environment.
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