S1301-2-5 断面変化穴を適用した金型冷却管の有する奪熱性能の定量的解析と従来冷却管との比較(工作機械と生産加工(2))

概要

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Cooling pipes in molds are generally machined by drills. Such cooling pipes are inefficient due to their simple shapes. To overcome the limitation of their shape, our research group has developed a new method to machine holes whose cross sections change along their center axes, which is called cross section's changing holes in the study. The machining method has the ability of making cooling pipes which are build in molds have various-shaped fins on their inside wall. Accordingly, it is expected that such cooling pipes have higher performance than that of conventional ones qualitatively. However, not only the quantitative performance difference of the cooling pipes before and after the improvement but even the basic performance of the improved cooling pipes is not clarified. To solve the problem, the study quantitatively analyzes one of their basic performances, the ability of taking away quantity of heat per a certain time, of the improved cooling pipes, and compares it with that of usual cooling pipes. From the results of the analysis, it is found that the performance of the improved cooling pipes is about twice higher than that of usual cooling pipes.
2009-09-12