The influence of the temperature deviation from laboratory conditions on the final dimensional control

U prvom dijelu diplomskog rada raščlanjene su i opisane postojeće trokoordinatne mjerne metode. Objašnjena je primjena 3D skenera u industriji, kao i terminologija koja se veže uz reverzni inženjering i kontrolu kvalitete. Opisane su karakteristike i mogućnosti Creaform HandySCAN BLACK™ | Elite 3D skenera te pripadajućeg VXelements programskog paketa koji se koriste za provedbu eksperimentalnih mjerenja. Objašnjena je kalibracija prema VDI/VDE 2634 Dio 3 smjernici, kao i postupak kalibracije pomoću kalibracijske ploče. U eksperimentalnom dijelu obrađen je utjecaj promjene temperature okoliša na distorziju predmeta. Prvi eksperiment sastoji se od 3D skeniranja pozicije u standardnim mjeriteljskim uvjetima (20 ℃) te u uvjetima povišene temperature (33 ℃). Izvršena je FEA analiza toplinskog širenja, nakon čega su svi rezultati uspoređeni. U drugom eksperimentu izvršeno je mjerenje lokalno zagrijanog predmeta nakon čega je analizirana deformacija.In the first part of the thesis, the existing three-coordinate measurement methods are analyzed and described. The application of 3D scanners in industry is explained, as well as terminology related to reverse engineering and quality control. The characteristics and capabilities of Creaform HandySCAN BLACK™ | Elite 3D scanner and associated VXelements software package are described, which are used to perform experimental measurements. Calibration according to the VDI/VDE 2634 Part 3 guideline is explained, as well as the calibration procedure using the calibration plate. In the experimental part, the influence of the change in temperature of environment on the distortion of the object was analyzed. The first experiment consists of 3D scanning the position in standard measuring conditions (20 ℃) and in elevated temperature conditions (33 ℃). An FEA analysis of thermal expansion was performed, after which all results were compared. In the second experiment, a locally heated object was measured, after which the deformation was analyzed