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Research into the geometry of the delimbing head of cutting knives

Author

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  • J. Mikleš

    (Department of Forest and Mobile Technologies, Faculty of Environmental and Manufacturing Technologies, Technical University in Zvolen, Slovak Republic)

Abstract

Limbing with a wedge tool as a chipless operation is accompanied by a large deformation of wood in the cutting plane, i.e. at the spot of contact with the tool face as well as in the zone adjacent to this plane. The theory of chipless cutting says that the resistance of wood fibers to deformation is particularly the main component of resistance to the tool penetration into wood. The friction component (resistance component) on the tool surface is a function describing resistance to fibre deformation, its magnitude depending upon the value of friction coefficient. The magnitude of cutting force acting in a direction of the velocity vector is a resultant of all resistance components acting on the particular parts of the tool which make up the cutting profile (face, back edge, cutting edge). In the presented paper force analysis is presented for the operation of a delimber. The objective of these experimental tests was to minimize energy requirement for limbing through determination of optimum geometry of delimbers while providing for the good quality of the limbing.

Suggested Citation

  • J. Mikleš, 2013. "Research into the geometry of the delimbing head of cutting knives," Research in Agricultural Engineering, Czech Academy of Agricultural Sciences, vol. 59(1), pages 29-34.
    • Handle: RePEc:caa:jnlrae:v:59:y:2013:i:1:id:50-2011-rae
    DOI: 10.17221/50/2011-RAE
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