Study on Influensive Factors on Surface Quality and Edges of Through- Holes Bored in Particleboard and MDF

In this research، effects of different factors in the CNC machine through- Hole boring of MDF and particleboard were investigated. Variables in boring were selected bit diameter in 3 levels 5،10 and 15 mm، feed speed in 2 levels 0. 3 m/min and 0. 6 m/min and rotary speed of machine axis in 3 levels 300،1500 and 3000 rmp. The goal of this study was to measure effects of mentioned factors on edge- quality of through- holes made in particle- board and MDF. Results have shown that with all bit diameters used، increasing rotary speed of bit improves smoothness of holes in both sides and boring dusts turned to finer sizes. Increasing feed speed did show positive effect on edge surface quality and lowered burr formation.