製材用丸のこぎりの振動ならびに危険速度

概要

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This paper presents analytical and experimental studies of rotating circular sawblades. Theoretical solutions are obtained under the assumption that the blade is free at the periphery r = a both in the in-plane and the lateral directions, while it is free along the inside hole r=b' in the in-plane direction and clamped laterally along the edge of the hub r=b(>b'). Natural frequencies of the blade are determined analytically as functions of the rotation speed of the blade, and the critical speeds for which a resonance effect occurs in the working sawblade are obtained from the frequency-rotation speed diagrams. Experiments were carried out for an aluminum circular plate, a SKS 5 circular plate and an actual, heat-treated SKS 5 sawblade. It is shown that the theoretical results, particularly the critical speeds, are in good agreement with the experimental results. Further, a simple arithmetic equation for evaluating the lowest critical speed of blade is presented.
社団法人日本機械学会の論文
1986-06-25