LAUSR

Abstract High process complexity becomes an important issue due to the increased number of product variants demanded by customers. The coordinate measurement is one of the key technologies used in the dimensional control to inspect and improve the accuracy of produced components. Dimensional inspection is often carried out on conventional coordinate measuring machine (CMM). However, there are concerns about low capacity, speed, and limited accessibility to the underbody and inner body zones. For complex body geometry problems, process engineers may need to analyze the component interactions with color-mapping, on the other hand, point based analysis in CMM requires excessive time loss. To overcome these challenges, automotive companies are tending to adapt laser scanning technologies. The aim of this study is to make the assessment of the measurement capability for Hexagon Leica laser scanning system (LSS) and evaluate the possibility of replacement with actual CMM in Body in White (BIW) measurements. The LSS implementation would be the first stage of the long-term measurement strategy towards inline geometry management with vertical integration of supplier data. The capability assessments for LSS and CMM were performed by two globally recognized references as uncertainty and measurement system analysis (MSA). The results demonstrated that the uncertainty and Gauge Repeatability & Reproducibility ( G RR ) of LSS are very satisfactory for BIW measurements. Furthermore, the measurement capacity was increased to 8 body/shift from 4 body/shift in CMM. The speed in diagnostic analysis was significantly improved by color-mapped reporting. Finally, measurement accessibility level reached to 96% from 77% in CMM.