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Research paper : Acquisition of skills on the shop-floor (N. Matsuki)−83−Synthesiology - English edition Vol.3 No.1 (2010) model, but it is difficult to discuss this within the range of the above-mentioned three methodologies. This will be a topic of future research.4.6 Measurement of the action of expert skilled workerFor the skill of action of the expert skilled worker, the following study was conducted in this study. One was the visualization of the pouring action in casting. As shown in Fig. 7, a device to measure the flow rate of the molten metal was developed by attaching a strain sensor to the neck of the ladle used in pouring. By doing so, we tried to visualize the expert skill of “fast in the beginning, slow in the middle, and push it in at the end!”While visualization became possible, it is known that fine adjustments are done depending on the situation such as the number of parts produced and the form by which the parts were linked, and such control mechanism is not simple. To analyze the action, the meanings of the actions become apparent only by interviewing the expert skilled worker on how to control what, and then analyzing the relationship of the action and the flow rate and temperature of the molten metal. The analysis of the action skill requires the clarification of the meaning of the control, but that level has not been achieved in this research or in a similar research on welding.5 Skills in future manufacturing industryWe discussed the research scenario and the result of acquiring the decision-making skills of the expert skilled workers, and described some examples of decision-making skills and the visualization of the action skills. Would expert workers in companies become unnecessary as such researches progress? We would like to discuss the training of future skilled workers and the positioning of expert skills.The issue of expert skills is an issue for large corporations as well as small companies. For example, painting and welding are done almost entirely by robots in the automobile industry. The setting of the action is done by a method called “teaching,” and the actions of the robots are determined by the expert skilled worker. However, as the factories became automated and the skilled workers lost their workplace, the companies are now facing the problem where people who can determine the appropriate painting and welding conditions for new materials and new paints are no longer present. This also points to the problem that the companies do not fully understand the control mechanism of such actions.As discussed in the section of the derivation by theoretical formulae, it is important that the successor who inherits the decision-making skills fully understands the physical and engineering meaning of the actions. It is necessary for the skilled worker of the future to engage in decision-making and action with sufficient engineering knowledge, at least in related fields. The worker must observe the actions objectively, and play the role of creating new skills by adapting to the new environment as an expert skilled worker. The future image of the expert skilled worker is to be an advanced engineer on site at the factory.The fully analyzed skill is converted to technology, and automation will be realized by robots. The worker himself will then go on to study the next topic. The author believes that the future skilled worker should take on the role as an engineer. The companies and the society must favor such human resources in terms of status and income, or else the future of Japanese manufacturing, which is currently considered to be the top in the world, will be in question.The skills of the current expert skilled worker are the results of long, hard efforts by excellent human resources who were the young people called the “Golden Eggs” who came from Search for case studies of faultsFig. 6 Example of screen for data mining.

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