| Summary: | 碩士 === 崑山科技大學 === 企業管理研究所 === 107 === Sheet metal industry is a traditional industry which is facing a manpower shortage problem. In order to enhance the competitiveness of the market, the quality of the product must have a considerable level. The G Company in Tainan is an architectural sheet metal processing plants, which main products are metal processing with the indigineously developed products. Although the company has been established more than ten years, it recently started to emphasize product quality. Since laser operation plays a key role in the product quality, and there is only one laser processing machine (AMADA FOM2RI3015) in the company, the study selecded the laser machine as the research object.
By the experience, there are problems for the poor quality of laser, such as programming, condition setting and personnel operations. However, because no detailed data were recorded, it is difficult to understand the relationships between the defective rate and problems. Therefore, the purposes of the study are first, to furtherly examine the quality of laser processing operations and second, propose a plan for improving the quality.
The research uses the Cause & Effects, or Fishbone Diagram, and 6M approach to analyze the processing quality of laser machine. The results show that the non-conformed products produced by the laser machine are caused by the following problems: 1. abrasion of lenses, 2. changes of processing conditions, 3. set-type of CNC program, 4. faulty operation process, 5. material composition, 6. errors of calling CNC
program, 7. replacement of wrong laser nozzles, and 8. machine problem and so on. In order to solve these problems, the study presents recommendations to G Company: 1. implementation of education and training, 2. establishment of performance evaluation system, 3. earlier eplacement of consumables lenses, 4. requirements of the proof of materials from suppliers, and 5. establishment of the incoming inspection system.
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