Coordination of saw blade tensioning with rotation speed: myth or reality?

Stakhiev, Y. M.

doi:10.1007/s00107-004-0490-1

Cited by 12 publications

(8 citation statements)

References 5 publications

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“…According to GOST 980-80, lateral stiffness should be greater than 40 N/mm in rip sawing and greater than 25 N/mm in cross-cutting. If values are lower, it is necessary to use guides [6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

A numerical simulation of static stiffness and strength of circular saw blade

Bílek¹,

Šuba

Baďurová

2018

MATEC Web Conf.

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The paper deals with the evaluation of the static stiffness and strength, which are critical parameters affecting the stability of the machining process but also the safety and durability of the wood cutting tools. Circular saw blade models for the purpose of computer numerical simulation were proposed using finite element methods, and verified in earlier research. Deformation response was observed, depending on the input parameters correlating to the saw blade woodworking conditions. The strength of the saw blade was compared with the different clamping methods and different thickness of the circular saw blade. An article gives a disturbing finding how minor change in the quality of the circular saw blade clamping, specifically one degree of misalignment, leads to critical states and probable cause of damage.

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Section: Introductionmentioning

confidence: 99%

A numerical simulation of static stiffness and strength of circular saw blade

Bílek¹,

Šuba

Baďurová

2018

MATEC Web Conf.

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“…The light gap between the blade surface and the edge of a curved ruler was tested. Lateral stiffness was used by Stakhiev 8 for the optimization of tensioning effect in coordination of tensioning degree with rotation speed. An experimental device was constructed by Schajer et al 9 for identifying the mode of vibration and controlling saw blade tensioning.…”

Section: Introductionmentioning

confidence: 99%

Tensioning effect modeling of circular saw blade after multi-spot pressure tensioning process

Zhang

2017

Advances in Mechanical Engineering

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Tensioning, as a plastic forming process, is the most important and advanced manufacturing process for circular saw blade. Multi-spot pressure tensioning is a new tensioning method that has been proposed and applied in recent years. However, the effects of process parameters of this method on tensioning effect of circular saw blade have not been systematically studied. This study aimed to examine the effects of loading force and spot distribution on tensioning stress field and natural frequencies of multi-spot pressure tensioned circular saw blade systematically. Both of these were calculated by a combination of dynamic/explicit, static/general, and frequency modules of ABAQUS software. An X-ray stress test validated the simulated tensioning stress field. Results show that loading force and spot distribution have effects on tensioning stress field and natural frequencies of circular saw blades with different extents.

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“…More than a hundred years ago, experienced craftsmen induced stress in the sawblade by hammering the saw in a manner learnt through experience, whereas today, the sawblade is rolled between two rollers (Szymani and Mote 1974;Schajer andMote 1983, 1984;Stakhiev 1999Stakhiev , 2003. Besides increasing the natural frequencies, the lateral stiffness of the sawblade is also important (Stakhiev 1998), where Stakhiev (2000Stakhiev ( , 2004 states that on the sawblade periphery, the lateral stiffness should be at least 40 and 25 N/mm for longitudinal and cross cutting, respectively.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Behaviour Analysis of a Commercial Roll-Tensioned Circular Sawblade

Merhar¹,

Bučar²,

Pepelnjak³

2017

BioResources

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A commercial woodcutting circular sawblade was analysed in this work. The lateral stiffness on the periphery was measured, and the natural frequencies were determined by modal analyses. The sawblade was modelled by the finite element method, where the influence of the internal stresses caused by roll-tensioning of the sawblade was considered. The roll-tensioning force was determined based on the measurement of the sawblade rolling profile, where it was established that the sawblade had been rolled with a force of 7800 N. The analysis showed that at the aforementioned force, the lateral stiffness was a maximum; here, the calculated and measured stiffnesses were 81 and 60 N/mm, respectively. The calculated natural frequencies agree well with the measured ones, where in the most important vibrational modes there is only a 7% difference. The maximum rotational speed for the sawblade was determined to be 85% of the critical speed. Because the sawblade was clamped with a ratio of clamping of only 0.25, the maximum rotational speed was amounted to 6630 rpm. Increasing the rolling force would increase the critical speed but greatly reduce the lateral stiffness.

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Coordination of saw blade tensioning with rotation speed: myth or reality?

Cited by 12 publications

References 5 publications

A numerical simulation of static stiffness and strength of circular saw blade

A numerical simulation of static stiffness and strength of circular saw blade

Tensioning effect modeling of circular saw blade after multi-spot pressure tensioning process

Dynamic Behaviour Analysis of a Commercial Roll-Tensioned Circular Sawblade

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