Diagnostics of Circular Sawblade Vibration by Displacement Sensors
| Autor: | Přemysl Veselý, Zdeněk Kopecký, Zdeněk Hejmal, Přemysl Pokorný |
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| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: | |
| Zdroj: | Drvna Industrija, Vol 63, Iss 2, Pp 81-86 (2012) |
| Druh dokumentu: | article |
| ISSN: | 0012-6772 1847-1153 |
| Popis: | The paper deals with problems of the circular sawblade vibration. In the introductory part, theoretical bases are summarized to determine the form of vibrations and critical and resonant rotational frequency. A diagnostic method is proposed for the direct measurement of amplitudes of a circular sawblade by displacement sensors with the subsequent Fast Fourier Transform (FFT) analysis. This method with the spectral analysis of a signal in the time area makes possible to determine the size and shape of vibration of a circular sawblade with respect to usability/applicability under operational conditions. Unlike standard methods, when the sawblade is excited by external sources, natural vibrations are used such as disk deformations and the dynamic unbalance of a circular sawblade, effects of chucking/gripping and machine vibration and, last but not least, the disk and sawn wood interaction. |
| Databáze: | Directory of Open Access Journals |
| Externí odkaz: |
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