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The aim of the research was to investigate the possibilities of partial substitution of conventional wood with alternative raw materials without raising the costs. One of the advantage of this kind of materials is that chips with different geometry can be made from agricultural lignocellulosic materials in contrast to wood waste commonly used for wood based panels production. Results of investigation...
The aim of the investigations was to determine the influence of the feed speed during drilling on the multi-spindle drilling machine on the affluence height of the machined laminated particleboards. It was noticed that the affluence height got lower with the feed speed increase up to about 0.4 m/min, above this value the affluence height was stable till the speed reached about 2 m/min and above this...
Chips for particleboard production are mainly characterized by two parameters: dimensions (length, width and thickness) and shape. Shape of a chip is usually described by chosen dimensions ratios. The most commonly used parameters are the slimness ratio and flatness ratio. But the above-mentioned parameters are insufficient to characterize technological chips, especially in the light of their further...
The aim of this work was an investigation of the influence of a tool's material and tool's geometry (blade angle) on wear of the tool when milling medium density fiberboards. As material for the tool the high-speed steel and carbide were used. Four types of blades of angles of 25, 40, 45 and 55 degrees were produced from each of these materials. The investigation of MDF milling shows that commercial...
The aim of this work was to characterize the form of the tool wear during milling of two different materials: particleboards produced from wooden chips and particleboards produced from rape straw parts. Research shows that even when the average bluntness is similar the form of the bluntness is different. The wear of tools which machine particleboards from wooden chips was more irregular with clearly...
The aim of this work was to examine the influence of the height of the cut layer on the forces and work of cutting in milling of laminated particleboards. The feeding force at the crack initiation and the maximum feeding force were measured, as well as the maximum of normal force. Specific work of cutting, specific work of new surface creation and specific work of chip deformation were calculated...
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