Determination of machinery and knife strains in the planing of wood-based panels

Abstract

In this study, strains that are caused by wood-based panels on horizontal milling machines and other cutting devices were examined. In order to fulfill this aim, samples of wood-based panels such as particleboard, medium density fiberboard (MDF), blockboard, okoume (Aucoumea klaineana) plywood, poplar (Populus × euramericana) plywood, and oriented strand board (OSB) were examined. The strains that milling machines and planer head with reversible knives suffered were measured by an amperemeter using an experimental mechanism with six different wood-based panels, three different engine revolution speeds (rev/min), and three drive forward speeds (m/min). Using the experimental data and the data derived from wood-based panels, engine revolution speed, and drive forward speed, several regression equations were developed in order to anticipate probable strains for each of the wood-based panels. As a consequence, the utmost strains observed on machinery during planing were caused by okoume plywood, followed by MDF, OSB, particleboard, blockboard, and poplar plywood in decreasing order of intensity. It was also observed that the spent current values (A) increased during planing in which engine revolution speed and drive forward speed are always kept high. It was also clearly seen that the wood-based panels were more resistant to the machinery and the knives when they were operated at higher speeds. The results of experiments correlated well with the predicted values produced by the anticipation regression models (R 2 = 0.898–0.965).