Acta Univ. Agric. Silvic. Mendelianae Brun. 2015, 63(2), 399-403 | DOI: 10.11118/actaun201563020399

The Shapes of Teeth of Circular Saw Blade and Their Influence on its Critical Rotational Speed

Adam Droba, Ján Svoreň, Ján Marienčík
Department of Manufacturing Technology and Materials, Faculty of Environmental and Manufacturing Technology, Technical University in Zvolen, T. G. Masaryka 24, 960 53 Zvolen, Slovak Republic

The main problems during cutting with circular saw blade are inaccurate cut, low quality of surface, high level of noise. These adverse effects are related to oscillation of circular saw blade. This oscillation cause adverse effects not only on workpiece but also on tool. In some case the circular saw blade reaches the value of critical rotational speed which leads to its instability and cause the oscillation of blade which may leads to destruction of tool. So the reduction of the amplitude of oscillation is essential for removing the adverse effects. This paper deals about influence of shapes of teeth as a type of modification that has positive effect oncritical rotational speed of circular saw blade. The parameters of studied models of circular saw blade were 42 number of teeth and the height of teeth with slice from sintered carbide was 14 mm. The variable parameter was the ratio between surface of teeth and surface of teeth gap. In this study was used computer software Creo Parametric 1.0 for obtaining natural frequencies of studied models. This software uses in analysis finite element method (FEM). There were done some steps to idealize the models. For calculating static and dynamics natural frequencies of modelswere used modal analysis. The critical rotational speed was calculated from obtained results by Creo Parametric 1.0 and compared on 5 models of tool.

Keywords: circular saw blade, modal analysis, natural frequency, critical rotational speed, FEM

Prepublished online: May 10, 2015; Published: April 1, 2015  Show citation

ACS AIP APA ASA Harvard Chicago IEEE ISO690 MLA NLM Turabian Vancouver
Droba, A., Svoreň, J., & Marienčík, J. (2015). The Shapes of Teeth of Circular Saw Blade and Their Influence on its Critical Rotational Speed. Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 63(2), 399-403. doi: 10.11118/actaun201563020399
Share...
Download citation
  • BibTeX (.bib)
  • Bookends (.ris)
  • EasyBib (.ris)
  • EndNote (.enw)
  • EndNote 8 (.xml)
  • ISI WoS (.isi)
  • Medlars (.medlars)
  • Mendeley (.ris)
  • MODS (.xml)
  • Papers (.ris)
  • RefWorks (.txt)
  • RefManager (.ris)
  • RIS (.ris)
  • MS Word (.xml)
  • Zotero (.ris)
    • Open full article

    References

    1. DROBA, A., PAULÍNY, D., SVOREŇ, J., 2013. Porovnanie teoretických a experimentálnych hodnô tvlastných frekvencií pílového kotúča. Acta facultatis technicae, 18(1): 39-46.
    2. EKEVAD, M., CRISTOVAO, L., GRÖNLUND, A. 2009. Different methods for monitoring flatness and tensioning in circular - saw blades. In: Proceedings 19th International Wood Machining Seminar. Nanjing, 21.-23. October 2009. Jiangsu, China. Faculty of Wood Science and Technology, Nanjing Forestry University, 121-131.
    3. GOGU, G. 1988. Berechnung der Eigenfreguenzen von Kreissägeblätternmit der Finite-Element-Methode. Holz als Roh- und Werkstoff, 46(3): 91-100. DOI: 10.1007/BF02612051 Go to original source...
    4. HOLØYEN, S. 1987. Vibrations and natural frequencies of angular slot circular saws. Holz als Roh- und Werkstoff, 45: 101-104. DOI: 10.1007/BF02605981 Go to original source...
    5. LEOPOLD, J., MÜNZ, V. V. 1992. Dynamische und statische Untersuchungen von Kreissägeblätternmittels der Finite-Elemente-Methode. Holzbearbeitung, 6: 52-56.
    6. MICHNA, S., SVOREŇ, J. 2007. Application of CAD, CAE with FEM for estimation ranges of values of critical rotational speed of circular saw blades. Acta Facultatis Technicae, 9(1): 201-206.
    7. MOTE, C. D. 1965. Free Vibration of Initially Stressed Circular Disk. Journal of Engineering for Industry, 5: 258-264. DOI: 10.1115/1.3670808 Go to original source...
    8. NISHIO, S., MARUI, E. 1996. Effects of Slots on Lateral Vibration of Circular Saw Blade. In: Proceedings of Tenth Wood Machining Seminar, 159-164. DOI: 10.1016/0890-6955(95)00088-7. DOI: 10.1016/0890-6955(95)00088-7 Go to original source...
    9. SCHAJER, G. S., MOTE, C. D. 1983. Analysis of roll tensioning and its influence on circular saw stability. Wood Sci. Technol., 17(4): 287-302. DOI: 10.1007/BF00349916 Go to original source...
    10. SVOREŇ, J. 2011. The analysis of the effect of the number o teeth of the circular-saw blade on the critical rotation speed. In: 4th International Scientific Conference - WOODWORKING TECHNIQUE, 2011. Prague, Czech Republic, 306-313.
    11. STACHIEV, J. M. 1970. Rezonansnyje kolebanija diskovych pil. Izv.VUZ. Lesnoj ľurnal, 13(5): 78-84.
    12. VESELÝ, P., KOPECKÝ, Z., HEJMAL, Z., POKORNÝ, P. 2012. Diagnostics of circular saw blade vibration by displacement sensors. Drvna Industrija, 63(2): 81-86. DOI: 10.5552/drind.2012.1130. DOI: 10.5552/drind.2012.1130 Go to original source...

    This is an open access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY NC ND 4.0), which permits non-comercial use, distribution, and reproduction in any medium, provided the original publication is properly cited. No use, distribution or reproduction is permitted which does not comply with these terms.


    Return to the content