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2 Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology

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Decomposition of cutting forces in quasi-orthogonal CNC milling

Kopecky Zdenek, Hlaskova Ludka, Rousek Miroslav

Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology

2019

No. 105

12--19

Decomposition of cutting forces in quasi-orthogonal CNC milling. The paper is focused on the analysis of cutting forces in milling of MDF boards on the CNC machine called SCM Tech 99 L. The Kistler 9257 B is top-of-the-line dynamometer with DynoWare software used to measure power and analyse data. The forces were examined and analysed using quasi-orthogonal milling with a single-edged blade. The resulting force values were compared with each other depending on the conventional and climb milling of the edge of the MDF board at various feed speeds.

Rozkład sił skrawających w quasi-prostopadłym frezowaniu CNC. W pracy przeanalizowano siły skrawania podczas frezowania płyt MDF na obrabiarce CNC SCM Tech 99 L. Do pomiaru mocy i analizy danych wykorzystano dynamometr Kistler 9257 B z oprogramowaniem DynoWare. Pomiaru sił dokonano w trakcie quasi-prostopadłego frezowania przy wykorzystaniu pojedynczego ostrza. Uzyskane wartości sił porównano ze sobą w zależności sposobu skarawania płyty MDF (przeciwbieżne i współbieżne) przy różnych prędkościach posuwu.

Adhesion of Pigmented Surface Finish on MDF Board

Slabejová G., Šmidriaková M.

Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology

2018

No. 104

566--570

The paper deals with the adhesion of pigmented surface finish intended into interior. The pigmented surface finish was formed as a system of the basic polyester coating material and the top polyurethane coating material. The surface finish was created in two various coating thicknesses on MDF board and on MDF veneered with beech veneer. The coating thicknesses differed in number of coatings of the top coating material. Adhesion of pigmented coating films to MDF board and to MDF veneered with beech veneer was evaluated by pull-off test according to the standard STN EN ISO 4624 Paints and varnishes. Pull-off test for adhesion. The tensile strength on veneered MDF board was higher than on MDF board with the coating film only. The rupture under pull-off test occurred in the surface layers of MDF board on both types of boards. The adhesion was not influenced by the film thickness.