PENGARUH KECEPATAN PEMAKANAN DAN KADAR AIR TERHADAP KEKASARAN PERMUKAAN PADA PROSES MILLING CNC 3 AXIS DENGAN MATERIAL KAYU JATI

There are many factors influencing the quality of products that are produced from wood machinery. Those influencing factors are the feedrate and moisture content.The results of this research was: (1) Reduction of feedrate of 3 axis CNC milling process with teak wood material, would be resulted the smllest surface roughness. (2) Reduction of moisture content of 3 axis CNC milling process with teak wood material, would be resulted the smallest surface roughness. (3) The surface roughness of 3 axis CNC milling processes with feedrate variation 0.2, 0.4 and 0.6 mm / rev and the moisture content 0%, 17% and 67% would be produce a level surface roughness between N7 to N11. The smallest surface roughness occurs in interaction feedrate 0.2 mm / rev with a moisture content 0% at 5.54 μm, whereas the rate of degradation surface roughness occurs interaction feedrate 0.6 mm / rev with moisture content 67% at 16.10 μm . The surface appearanceof 3 axis CNC millingproceses a fuzzy grain, loosened grains, chipped grains and chip mark. Keywords: feedrate, moisture content, CNC milling, surface roughness