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Some possibilities for reducing circular saw idling noise
Journal of Wood Science volume 47, pages 389–393 (2001)
Abstract
The sound pressure level of differently designed circular saw blades were investigated during idling. Nine blade samples were used: three differently designed blade bodies (without slots, with four radial slots, and with four slots with copper cork), each with three diameters (260,280, and 300 mm). The sound pressure level was measured at different rotational frequencies ranging from 25 to 65 rps in increments of 1 rps. Rubber damping rings 80mm in diameter and 0.3 mm thick were placed between the saw blade and the collars, and the emitted noise was measured. Because of the whistling sound the blades without slots emitted high sound pressure levels. There were no significant changes when rubber damping rings were used. The use of rubber damping rings on the samples with radial slots eliminates the whistling noise. The saws with copper corks did not emit a whistling noise at all, and their aerodynamic noise was 2–3 dB (A) lower than the aerodynamic noise of the saws with radial slots. The relation between sound pressure emitted by the damped idling saw and peripheral velocity can be described by the power function with the exponent value between 4.8 and 5.2.
References
Mote CD Jr, Wen Hua Zhu (1984) Aerodynamic far field noise idling circular sawblades. J Vibration Acoustics Stress Reliability Design 106:441–446
Cho HS, Mote CD Jr (1977) Aerodynamically induced vibration and noise in circular saws. In: Proceedings of 5th wood machining seminar, Richmond, VA, USA, pp 207–245
Beljo-Lučić R, Goglia V (1998) Research of some influencing factors on circular saw idling noise levels and noise frequency spectrum (in Croatian). Drvna Ind 49:151–163
Leu MC, Mote CD Jr (1979) Noise generation by circular saws. In: Proceedings of 6th Wood Machining Seminar, Richmond, USA, October 15–17, pp 169–188
Dugdale DS, (1977) Practical analysis of saw noise. In: Proceedings of 5th wood machining seminar, Richmond, VA, USA, pp 198–206
Salje E, Bartsch U, Polster J (1979) Noise reduction with compound circular saws. In: Proceedings of 6th wood machining seminar, Richmond, VA, USA, pp 189–193
Plester J (1985) Origin of noise and noise reduction at circular sawing. In: Proceedings circular sawblade technology, Oslo, pp 178–188
Rhemrev J, Cano T (1989) Noise studies of various damped circular crosscut saws. For Prod J 39:65–69
Miklaszewski S, Grobelny T (1995) Sound power determination of two circular saws with different constructions of the blades. In: Proceedings of I. medunarodna konferencija “stroj-nastrojobrobok,” Nitra, Slovensko, pp 83–88
Hattori N, Ando K, Kitayama S, Nakashima K (1993) Suppression of the whistling noise in circular saws using a commercially-available damping metal. In: Proceedings of IWMS14, Epinal. pp 581–587
Cheng W, Yokochi H, Kimura S (1998) Aerodynamic sound and self-excited vibration of circular saw with step thickness. I. Comparison of dynamic characteristics between the common circular saw and the circular saw with step thickness. J Wood Sci 44:177–185
Yanagimoto K, Mote CD Jr, Ichimiya R (1995) Reduction of vortex shedding noise in idling circular saws using self-jets of air through saw teeth. J Sound Vibration 188:745–752
Marui E, Erna S, Miyachi R (1994) An experimental investigation of circular saw vibration via a thin plate model. Int J Machine Tools Manufacture 34:893–905
Yokochi H, Kimura S, Tsuchikawa S (1994) Vibration characteristics of rotating circular saw. V. Effects of number of teeth and slots on vibration and radiated sound. Mokuzai Gakkaishi 40:148–157
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Beljo-Lučić, R., Goglia, V. Some possibilities for reducing circular saw idling noise. J Wood Sci 47, 389–393 (2001). https://doi.org/10.1007/BF00766791
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DOI: https://doi.org/10.1007/BF00766791