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Cutting forces in bandsaw processing of oak and beech wood as affected by wood moisture content and cutting directions

Einfluss von Holzfeuchte und Schnittrichtung auf die Schnittkräfte beim Bandsägen von Eichen- und Buchenholz

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Abstract

Cutting forces in bandsaw processing of oak and beech wood were measured at two levels of wood moisture content (about 12 % and FSP) for four cutting directions (90°–90°, 90°–0°, 0°–90° and 90°–45°). A constant cutting speed of 40 m/s and a feed rate of 20 m/min were applied. A piezoelectric dynamometer (KISTLER type 9257A) mounted on the carriage of the vertical bandsaw machine (ESTERER model EB 1400) was used to measure the parallel, normal and lateral cutting forces. Results revealed that all cutting forces depend on the wood moisture content and cutting direction. The greatest parallel force was observed for oak wood at 12 % MC for 90°–90° cutting direction (44 N/mm) whereas the lowest one was for beech wood at 30 % MC for 0°–90° cutting direction (20 N/mm). In contrast to the little change of lateral force at various cutting directions, the change in parallel force was significant.

Zusammenfassung

Gemessen wurden die Schnittkräfte beim Bandsägen von Eichen- und Buchenholz bei zwei verschiedenen Holzfeuchten (12 % und Fasersättigung) und vier Schnittrichtungen (90°–90°, 90°–0°, 0°–90° und 90°–45°) bei einer konstanten Schnittgeschwindigkeit von 40 m/s und einer Vorschubgeschwindigkeit von 20 m/min. Zur Messung der drei verschiedenen Schnittkräfte (parallel und rechtwinklig zur Holzoberfläche und in Querrichtung) wurde ein Piezo-Dynamometer (KISTLER Typ 9257A) verwendet, der auf dem Vorschubwagen mit einer vertikalen Bandsäge (ESTERER Modell EB 1400) montiert war. Die Ergebnisse zeigten, dass alle Schnittkräfte von der Holzfeuchte und der Schnittrichtung abhängen. Die Schnittkraft parallel zur Holzoberfläche war bei Eichenholz mit 44 N/mm bei einer Holzfeuchte von 12 % und einer Schnittrichtung von 90°–90° am größten und bei Buchenholz bei 30 % Holzfeuchte und einer Schnittrichtung von 0°–90° mit 20 N/mm am geringsten. Im Gegensatz zu den signifikanten Unterschieden bei der Schnittkraft parallel zur Holzoberfläche waren die Unterschiede bei der Schnittkraft in Querrichtung gering.

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Acknowledgments

This research was carried out at the University of Applied Sciences Rosenheim in Germany. Special thanks to the technicians for their help in the achievement of this work.

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Authors and Affiliations

  1. Department of Wood and Paper Science and Technology, Faculty of Natural Resources, University of Tehran, P.O.BOX 31585-4314, Karaj, Iran

    Payam Moradpour, Kazem Doosthoseini & Asghar Tarmian

  2. Faculty of Wood Technology, University of Applied Sciences Rosenheim, FH-Rosenheim, Hochschulstr 1, 83024, Rosenheim, Germany

    Frieder Scholz

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  1. Payam Moradpour
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  2. Kazem Doosthoseini
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  3. Frieder Scholz
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  4. Asghar Tarmian
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Correspondence to Payam Moradpour.

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Moradpour, P., Doosthoseini, K., Scholz, F. et al. Cutting forces in bandsaw processing of oak and beech wood as affected by wood moisture content and cutting directions. Eur. J. Wood Prod. 71, 747–754 (2013). https://doi.org/10.1007/s00107-013-0734-z

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  • DOI: https://doi.org/10.1007/s00107-013-0734-z

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