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Experimental results concerning the influence of some technological factors on the cutting force in longitudinal milling of oak (Quercus petraea), tropical tree species – meranti (Shorea leprosula), koto (Pterygota macrocarpa) and wood-based composite materials such as medium density fibreboard (MDF) and plywood widely used in the furniture manufacturing are presented in the paper. In addition, the results are compared with previously performed studies under the same conditions for tree species like beech (Fagus sylvatica L.) and white pine (Pinus sylvestris L.). Two factors are studied: feeding speed and uncut chip thickness, as it is found that the cutting speed has a lower impact and the optimum spindle revolutions are approximately 6000 rpm. The results show that the forces in plywood milling (maximum value ≈ 46.9 N) significantly exceed those of solid tree species such as beech (Fagus sylvatica L.) and oak (Quercus petraea) (maximum values ≈ 27.7 and 22.4 N). On their basis, regression equations that allow the analytical determination of the target function are derived. |
