Experimental Examination and Modification of Chip Suction System in Circular Sawing Machine

The article presents the results of experimental examination of the wood chip suction system in the existing sliding table saw before and after its modifi cation. The studies focused on the extraction hood of the mentioned system. The methodical experimental research of the pressure distribution inside the hood during wood chip removal for the selected rotational speed of saw blades of 3500 and 6000 min -1 with a diameter of 300 mm and 450 mm were carried out. The analysis of the results allowed estimating the areas with insuffi cient vacuum pressure hindering the organized transport of wood chips in the sliding table saw. That pressure was the main factor infl uencing the decision to adjust the hood construction. To achieve the effi cient performance, several changes in the hood geometry were implemented. The results obtained from the experiments were used at the stage of shape modifi cation of the extraction hood. As a result, a new design of the chip suction system was obtained, vastly improving the chip extraction from the tool.