Research on circular saw disc problems: several of results

Stakhiev, Y. M.

doi:10.1007/s00107-002-0353-6

Cited by 13 publications

(12 citation statements)

References 4 publications

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“…The function w, which is needed in Eqs. 2, 3, and 4, and describing the mode shape, can be derived from the solution of the differential equation describing the transversal vibration of a thin disk (Soedel 1993):…”

Section: Mode Shape Function Determinationmentioning

confidence: 99%

Influence of temperature distribution on circular saw blade natural frequencies during cutting

Merhar

2020

BioRes

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When cutting wood, heat is generated in the cutting zone and in the gullet due to the friction between the teeth of the blade and the material that is being cut. Since the wood is hydrophilic, the saw blade cannot be cooled with liquids, as is usual when cutting metals. The only way to remove the heat from the source is by conductivity to the centre of the saw blade and then by convection into the air. This research presents an analytical model to calculate the natural frequencies of circular saw blades exposed to different temperature distributions. The model confirmed experimental findings of many authors, i.e. the heating of the saw blade cutting edge reduces its natural frequencies, the rate of the reduction depending on the temperature difference between the cutting edge and the rest of the blade and on the shape of the temperature distribution. In contrast, heating the centre of the saw blade increases its natural frequencies, the rate of increase depending on the temperature difference and the shape of the temperature distribution. With the presented model, the most favourable temperature distribution can be calculated from the point of view of the critical saw blade speed, which can be achieved by heating or cooling the centre of the saw blade.

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Section: Mode Shape Function Determinationmentioning

confidence: 99%

Influence of temperature distribution on circular saw blade natural frequencies during cutting

Merhar

2020

BioRes

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“…The determination of resonant and critical rotational frequency then results from the theory of vibration of a rotating circular sawblade. The dynamic frequency of vibration of a rotating circular sawblade f d is quadratically affected by rotational frequency f n (Stakhiev, 1989(Stakhiev, , 2003 (4) and (5) on the basis of measured frequencies f st , f z and the circular sawblade rotational frequency f n . Then, by substitution into known relations (Siklienka and Svoreň, 1997), resonant (6) and critical (7) rotational frequency of a circular sawblade can be determined expressed in min -1 .…”

Section: Uvodmentioning

confidence: 99%

Diagnostics of Circular Sawblade Vibration by Displacement Sensors

et al. 2012

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“…Acoustic emission analysis, or acoustic pressure (AP), are currently based upon the determination of the natural frequencies of the cutting tools (predominantly circular saw blades), the critical rotation speeds introducing resonance (Orlowski et al 2007), and the stability, lateral stiffness, levelling, and tensioning (Stakhiev 2003). Examinations were also directed towards the lowering idle noise of circular saw blades (Hattori and Lida 1999;Beljo-Lučić and Goglia 2001;Kopecky and Rousek 2012).…”

Section: Introductionmentioning

confidence: 99%

On acoustic emission analysis in circular saw cutting beech wood with respect to power consumption and surface roughness

Svrzic

Djurković

Danon

et al. 2021

BioRes

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A sound or a noise that accompanies wood machining processes is introduced by the tool rotation itself, by the friction of moving machine parts, or by wood-tool interaction. The sounds generated during machining with a circular saw could be analysed in order to monitor and possibly control the cutting process. Applying altered cutting parameters while cutting beech wood (Fagus sylvatica L.), which is the most common wood species in the Republic of Serbia, caused acoustic emissions that could be analysed throughout corresponding spectra. As shown in previous studies, altering the cutting parameters, e.g., the feed speed and tool override, resulted in variations in power consumption, surface roughness, and acoustic emission (or acoustic pressure). The aim of this paper was to provide a possible correlation between the applied cutting parameters and the acoustic emission spectra with respect to consumed power and the state of the machined surface. Along with acoustic emissions, the power consumption and surface roughness data were also acquired in order to make a possible relationship. By associating the idle circular saw acoustic spectra with background noise and comparing them with those obtained during machining, it was possible to indicate spectrum areas of particular interest for further analysis.

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Research on circular saw disc problems: several of results

Cited by 13 publications

References 4 publications

Influence of temperature distribution on circular saw blade natural frequencies during cutting

Influence of temperature distribution on circular saw blade natural frequencies during cutting

Diagnostics of Circular Sawblade Vibration by Displacement Sensors

On acoustic emission analysis in circular saw cutting beech wood with respect to power consumption and surface roughness

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