# Methodology for Verification of Geometrically Complex Components Through Reverse Engineering
## 3 Results  
In terms of the acceptability of deviations within the specified tolerances for verifying the effectiveness of the designed fixture, it was assessed whether the fixture met all accuracy and functionality requirements outlined in the technical drawings and technological specifications. After performing 3D measurements and analyzing the fixture's geometry, the actual values were compared with the CAD model specifications.  
As shown in Figure 10, all obtained results were subjected to a detailed analysis, during which deviations between the actual and expected conditions of the fixture were evaluated. Based on this analysis, the extent of these deviations was determined, and it was assessed whether they fell within the predefined tolerances set during the fixture development. These tolerances were essential for ensuring the proper functionality of the fixture and guaranteeing the quality of the final products. Figure 10 shows the measurement of flatness in nine planes, with tolerances specified in the range of 1 mm to 4.5 mm in each plane, as indicated in the technical drawing documentation. This allowed for an accurate evaluation of whether the fixture met the requirements for geometric accuracy.  
By utilizing scanning or CAD models, it was possible to obtain complete surface representations of the object and subsequently compare them with reference values. The PolyWorks software allowed the definition of entire surfaces and their accuracy analysis in comparison with reference CAD models or ideal surfaces. If specific inspection of a certain surface area was needed, as shown in Figure 11, it was possible to select and define only that section, allowing for more detailed analysis in areas where a higher risk of errors or issues was anticipated. Additionally, it was possible to select the weldment display for better illustration and apply the elements of the fixture that are movable or adjustable during the process.  
Figure 11: Verification of the geometric parameters of the welding fixture, including the weldment display and application to selected parts.  
Figure 10: Illustration of the verification process of the fixture’s flatness.  
In Figure 12, a sample of 13 points was selected within the tolerance range of \(\pm\)0.7 mm for better representativeness of the results. After evaluating these points, it was determined that all measured values fell within the required tolerances, with no significant deviations detected that could negatively affect the effectiveness of the fixture or the quality of the final product. This result confirms that the designed fixture is fully functional, meets all specified technical parameters, and was manufactured with high precision. These findings also confirm that the fixture is ready for implementation in serial production without the risk of quality issues.  
Reverse engineering played a crucial role in the verification of the fixture by enabling precise analysis of the physically manufactured fixture and its comparison with the original CAD model. The geometric data obtained through this process allowed for a detailed assessment of deviations between the actual and expected state.