Economical Wood Sawing with Circular Saw Blades of a New Design

Wasielewski, R.; Orłowski, Kazimierz A.; Szyszkowski, S.

doi:10.5552/drind.2012.1121

Cited by 8 publications

(7 citation statements)

References 1 publication

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“…Taking into consideration that circular saw teeth are complicated three-dimensional solids of small overall dimensions circular saws are increasingly examined with vision techniques, which are based on digital analysis of recorded tooth pictures [4,[6][7][8][9]. However, in these types of measurements the tooth inspection is limited only to investigation of projections of tooth outer plane outlines.…”

Section: Vision Control Of the Circular Saw Tooth Geometrymentioning

confidence: 99%

Mechatronic System for Automatic Inspection of Circular Saw Teeth

Kapcia

Orłowski

Wasielewski

2010

SSP

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The paper presents a mechatronic system for automatic inspection of circular saw teeth. The described system, based on numerical processing of recorded tooth images, has been implemented in the automatic vision controller system WKOPTar. The applied mechatronic system for the automatic spindle control positioning guarantees for the circular saw blade teeth a proper position enabling to grab and record tooth images even for non-uniform pitches in the examined circular saw blade. Some examples of measurements and geometry analyses of circular saw teeth were provided in order to illustrate the diagnostic usability of the apparatus. The system allows the user to determine up to 32 parameters for one tooth. However, the direct interpretation of physical parameter is sometimes partially limited by the software because the same parameter might have different meaning. Thus, in some cases a proper interpretation of the results may be feasible after recorded tooth screen analyses.

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Section: Vision Control Of the Circular Saw Tooth Geometrymentioning

confidence: 99%

Mechatronic System for Automatic Inspection of Circular Saw Teeth

Kapcia

Orłowski

Wasielewski

2010

SSP

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“…Crosscutting of wood in the production of final products is usually carried out as accurate cutting to the required dimensions using mitre or transverse saws (Sandak and Negri, 2005;Orlowski et al, 2020). In the past, most authors, Prokeš (1982), Pernica (1999), Wasilewski-Orlowski (2012) and others, examined the process of wood-cutting with a machine feed of a constant speed. The fixed speed during the machine feed of the workpiece determines the constant feed per tooth and the thickness of the layer cut.…”

Section: Introduction 1 Uvodmentioning

confidence: 99%

Impact of Circular Saw Blade Design on Forces During Cross-Cutting of Wood

et al. 2022

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This paper evaluates the impact of the number of saw blade teeth on kinematic and dynamic parameters during cross-cutting of soft and hard woods with mitre saw BOSCH GCM 12 GLD Professional. The forces measured using a three-dimensional XYZ dynamometer Kistler 9257B and subsequent calculation based on a mathematical model were applied in the Ernst-Merchant diagram and the forces acting in the cutting of spruce and oak planks were analysed and compared. The wood cutting was performed by four geometrically and structurally similar blades with a 300 mm diameter and with different count of WZ-shaped teeth (z = 26, 36, 48, 60). The optimum saw blade for the given cutting conditions was subsequently assessed by statistical analysis. Unlike many studies researching the cutting resistances in transversal and longitudinal wood cutting, this experiment and force analysis was performed in dependence on the constant feed force.

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“…In general, existing methods for the control of manufacturing operations, mainly based on the experience and craftsmanship of the manufacturing engineers/machinists, are becoming obsolete and must be replaced by science-/knowledge-based methods (Grzesik 2017). As costs for energy and raw material are rising, reduction in the saw kerf (Wasielewski et al 2012;Orlowski and Walichnowski 2013) as well as improvement in the surface quality is becoming increasingly important (Krenke et al 2017a, b). Hence, proper optimization of the cutting processes calls for the appropriate approach for estimation of cutting forces, since it could help in a better understanding of the interaction of the tool and raw material.…”

Section: Introductionmentioning

confidence: 99%

Revisiting the estimation of cutting power with different energetic methods while sawing soft and hard woods on the circular sawing machine: a Central European case

et al. 2020

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In the classical approaches, used in Central Europe in practice, cutting forces and cutting power in sawing processes of timber are commonly computed by means of the specific cutting resistance kc. It needs to be highlighted that accessible sources in handbooks and the scientific literature do not provide any data about wood provenance, nor about cutting conditions, in which cutting resistance has been empirically determined. In the analyses of sawing processes, the use of a model with elements of fracture mechanics involved is an alternative way. In this work, predictions of the newly developed model (FRAC_MOD) for the circular sawing machine are presented. Thanks to this modern approach, it was possible to reveal the usefulness of the FRAC_MOD, using experimental results data on fracture toughness and shear yield stresses of both Polish pine (Pinus sylvestris L.) and Czech beech wood (Fagus sylvatica L.). The achieved results were compared to the forecasted values obtained with classical models (CLAS_PL and CLAS_CZ), which are commonly applied in Central European sawmills. The carried out analyses allowed us to discover undesired effects in the form of underestimation of cutting power when applying the CLAS_PL and CLAS_CZ models. For that reason, the FRAC_MOD cutting model could be suggested for the prediction of energetic effects in cases of dynamical analyses and even unsteady cases.

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Economical Wood Sawing with Circular Saw Blades of a New Design

Cited by 8 publications

References 1 publication

Mechatronic System for Automatic Inspection of Circular Saw Teeth

Mechatronic System for Automatic Inspection of Circular Saw Teeth

Impact of Circular Saw Blade Design on Forces During Cross-Cutting of Wood

Revisiting the estimation of cutting power with different energetic methods while sawing soft and hard woods on the circular sawing machine: a Central European case

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