C形パンチプレスの制振構造に関する研究 : 第2報,音響モード解析による音源の探査

概要

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In this study, noise sources in a C-frame turret punch press are experimentally analyzed using a scale model. The distribution of sound pressure levels around the C-frame is measured in order to clarify the portion mainly generating the noise. As a result, the sound pressure level is found to become maximum at the open side of the C-frame, in which a punch-die set is usually installed. The result is the same as in previous former research work. However, the noise sources cannot be identified from such distribution. Thus, the sound field, which includes information of both amplitude and phase of sound vibration, is analyzed on planes parallel and perpendicular to the side panel of the C-frame by a modal technique. From the experimental results, it is found that the membranous vibration of the side panel, as well as the first specific vibration mode of the C-frame, must be damped for noise reduction.
社団法人日本機械学会の論文
1994-04-25