Original scientific paper

https://doi.org/10.5552/drvind.2022.2142

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

Zdeněk Kopecký ; Mendel University in Brno, Faculty of Forestry and Wood Technology, Department of Wood Science and Technology, Brno, Check Republic
Vít Novák ; Mendel University in Brno, Faculty of Forestry and Wood Technology, Department of Wood Science and Technology, Brno, Check Republic
Luďka Hlásková ; Mendel University in Brno, Faculty of Forestry and Wood Technology, Department of Wood Science and Technology, Brno, Check Republic
Jakub Rak ; Mendel University in Brno, Faculty of Forestry and Wood Technology, Department of Wood Science and Technology, Brno, Check Republic

Abstract

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.

Keywords

saw blade; mitre saw; Kistler dynamometer; cross-cutting; force analysis; Ernst-Merchant model; statistical analysis

Hrčak ID:

285722

URI

https://hrcak.srce.hr/285722

Publication date:

15.11.2022.

Article data in other languages: croatian

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