20.500.12556/RUL-117865 Vpliv tehnoloških in geometrijskih parametrov rezila na kakovost obdelane površine smrekovine diplomsko delo - visokošolski strokovni študij Influence of technological and geometrical blade parameters on the quality of machined spruce wood surface Raziskovali smo vplive tehnoloških in geometrijskih parametrov rezila na kakovost obdelane površine smrekovine. Odrezovali smo premočrtno v vzdolžni smeri (90°-0°). Eksperiment je bil razdeljen na štiri dele. V prvem delu smo spreminjali rezalno hitrost za 0,5 m/s od 0,2 m/s do 4,2 m/s, prsni kot je znašal 20°. V drugem delu smo odrezovali z različnimi prsni koti (5°, 10°, 15°, 20°, 25°, 30°, 35° in 40°) in rezalno hitrostjo 1,2 m/s. V tretjem delu smo pri prsnem kotu 30° in rezalni hitrosti 1,2 m/s spreminjali inklinacijske kote (0°, 20°, 30°, 40° in 50°). V četrtem delu smo odrezovali glede na različno usmeritev tkiva (0°, 30°, 60° in 90°), prsni kot je znašal 20° in rezalna hitrost 1,2 m/s. Debeline odrezkov so bile 0,05 mm, 0,1 mm in 0,15 mm. Za vsako kombinacijo parametrov smo naredili tri reze in izmerili profil površine na ranem in kasnem lesu. Glede na izmerjen profil površine so bili izračunani parametri Ra, Rz in Rmax. Najkakovostnejša površina je bila pri prsnem kotu 15°, kotu inklinacije 40°, usmerjenostjo tkiva 0°, rezalno hitrostjo med 1,7 m/s do 2,2 m/s ter debelino odrezka 0,05 mm. The influence of technological and geometrical blade parameters on the surface quality of machined spruce wood surface has been investigated. The orthogonal linear cutting technique along the grain (90°-0°) was used. The experiment was divided in four parts. In the first part the cutting speed was altered for 0.5 m/s from 0.2 m/s to 4.4 m/s and the rake angle was 20°. Different rake angles (5°, 10°, 15°, 20°, 25°, 30°, 35° and 40°) and cutting speed 1.2 m/s were used in the second part. At rake angle 30° and cutting speed 1.2 m/s oblique angles were altered (0°, 20°, 30°, 40° and 50°) in the third part. In the fourth part we were cutting with different grain direction (0°, 20°, 30°, 40° and 50°) at rake angle 20° and cutting speed of 1.2 m/s. The chip thicknesses ware 0.05 mm, 0.1 mm and 0.15 mm. For each combination of parameters three cuts were made and then the profile of the surface was measured, separately on early wood and late wood. Based on the profile the surface parameters Ra, Rz and Rmax were calculated. The best surface quality was at the rake angle 15°, oblique angle 40°, cutting speed between 1.7 m/s and 2.2 m/s and chip thickness 0.5 mm. odrezovanje hrapavost površine smrekovina cutting surface roughness spruce wood true false false [A. Gorišek] Slovenski jezik Angleški jezik Diplomsko delo 2020-07-31 10:28:10 2020-07-31 10:28:14 2022-08-30 04:00:42 0000-00-00 00:00:00 2016 0 Ljubljana 2016 Ljubljana XII, 57 f., [12] f. pril. 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 630*822.33 2593161 UNI_Gorisek_Andrej_2016.pdf UNI_Gorisek_Andrej_2016.pdf 1 BC383C6A88F09E05647A03256AEC8D34 11b1dd7553d518993a14cc5a98c060b4d94eda3daf4cd5a2252fad501c07ea80 489a82d9-a1b9-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=131790 Biotehniška fakulteta 0 0 0