Analysis of Circular Saw Tooth Marks Profile on Material Machined Surface After Filtering with Fast Fourier Transform (FFT)

The article presents theoretical analysis of machined surface roughness after sawing on circular saw and implementation fast Fourier transform (FFT) as a possible simple filtering method for out just the blade tooth influence roughness. Surface profile is represented signal that can be obtained sum complex periodic signals represent marks lateral movement due to structural wood combined with machining roughness, Gaussian noise. application FFT based such effectively used extract main frequency components tool total time domain filtered display then by use inverse transform. In order test assumptions, tests in solid oak (Quercus robur L.) medium density fiberboard (MDF) was conducted. Machined measured analyzed accordance assumptions. It concluded combination discrete standard parameters give more complete representation saws filter effective quantifying varying conditions different workpiece material.