Applying 3D-Scan Systems RangeVision for Precision Preparing of Polygonal 3D-Models

Many different applications of product inspections have found a significant advantage by the use of 3D-scanners, especially when working with complex surfaces, where traditional inspection tools have significant limitations. This work deals with the structured light 3D-scanning based on fringe-pattern and obtaining polygonal mesh models (stl-models) of several end- and half-products, manufactured by different operations of blank production. In the study, the preparing of point clouds are discussed as well. 3D-scanning is possible to apply for getting the high resolution and accurate results for both metallic and non-metallic materials. Careful 3D-model reconstruction provides the size tolerances up to ±0.05 mm for the rough surfaces after stamping and casting operations and up to ±0.60 mm for wavy surfaces after 3D-printing by FFF-method. The automatic repairing and healing of the 3D-models can cause artefact building and trespassing the accepted thresholds for tolerances.