Open AccessMeasurement of Wood Cutting Forces during Bandsawing Using Piezoelectric Dynamometer
Author(s) -
Payam Moradpour,
Frieder Scholz,
K Doosthoseini,
Asghar Tarmian
Publication year - 2016
Publication title -
drvna industrija
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.287
H-Index - 19
eISSN - 1847-1153
pISSN - 0012-6772
DOI - 10.5552/drind.2016.1433
Subject(s) - dynamometer , piezoelectricity , materials science , composite material , mechanical engineering , structural engineering , forensic engineering , engineering
Optimization of wood cutting conditions can decrease the cutting forces, which directly relates to the energy consumption. The aim of this study was to measure cutting force components in bandsaw processing of green oak and beech wood at 90°-90° cutting direction (mode A). For this purpose, a piezoelectric dynamometer (KISTLER type 9257A) mounted on the log carriage of vertical bandsaw machine (ESTERER model EB 1400) was used to measure the parallel, normal and lateral cutting forces for different cutting speeds (20, 30 and 40 m s-1) and feed rates (20, 30 and 40 m min-1 ). Results showed that all cutting force components change by increasing the cutting speed and feed rate over the analysed range. However, little changes were observed for lateral force. Overall, oak wood required greater cutting forces compared to beech wood. Conclusively, in the studied range,with increasing cutting speed ratio to feed rate, main cutting force and normal force were decreased.Optimizacijom uvjeta rezanja drva mogu se smanjiti sile rezanja čija veličina izravno utječe na potrošnju energije tijekom piljenja. Cilj istraživanja bio je odrediti sastavnice sile rezanja tijekom piljenja svježe hrastovine i bukovine tračnom pilom, uz smjer rezanja 90° - 90° (mod A). U tu svrhu piezoelektrični je dinamometar (Kistler tip 9257A) montiran na posmična kolica za trupce vertikalne tračne pile (ESTERER model EB 1400) i upotrijebljen za mjerenje paralelne, okomite i bočne sile rezanja pri različitim brzinama rezanja (20, 30 i 40 m·s-1) i posmičnim brzinama (20, 30 i 40 m·min-1). Rezultati su pokazali da se sve sastavnice sile rezanja mijenjaju s povećanjem brzine rezanja i posmične brzine u istraživanom rasponu. Male promjene zabilježene su za bočnu silu. Rezultati su pokazali da su za piljenje hrastovine potrebne veće sile rezanja nego pri piljenju bukovine. Zaključno, u promatranom se rasponu brzina s povećanjem omjera brzine rezanja i posmične brzine smanjuju glavna i okomita sastavnica sile rezanja