SCANNING OF SPUR GEARS USING LASER SCANNING PROBE

• Main Author: Hasanudin
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/70174
• Institution: Institut Teknologi Bandung

3D laser scanning is a non-contact measurement method used to obtain point clouds of scanned objects. How closely the scan results can represent the real object is still a challenge. In this research, two spur gears of different classes were scanned using a laser scanning probe attached to a coordinate measuring machine (CMM). This research aims to determine the effect of data processing parameters on scanning results. In addition, deviation analysis was performed on the scanned model to determine the difference in gear quality using a laser scanning probe. The parameters that want to know the effect are strength, smoothness level, and geometry capture accuracy. The results showed that the maximum strength and smoothness level affected the larger the poly-edge length of the mesh. Meanwhile, the maximum geometry capture accuracy affects the smaller the poly-edge length of the mesh (the mesh is closer to the real object). However setting this parameter to the maximum will increase the defects that occur in the mesh. The deviation of the entire surface with 3D comparison shows the areas of deviation in the gears, i.e., fillet curved (root diameter), outside diameter, and round chamfer. Dimensional deviations and surface profiles show a tendency for the gear mesh model 1 to be smaller than the gear mesh model 2. The average deviation of the peak diameter and hole diameter of gear model 1 to the nominal model is 0.0165 mm and 0.0961 mm. While the peak diameter and hole diameter of gear model 2 is 0.0261 mm and 0.1123 mm. The average deviation of the surface profile of gear model 1 is 0.1279 mm, while that of gear model 2 is 0.1401 mm.