The RTV adhesive bead creates a seal between the engine cover to prevent leaks during operation. The correct and consistent volume of RTV bead applied is critical to ensure a correct seal to prevent leaks that can lead to potential recalls. The customer’s specifications included checking for the width, height, and continuity of the bead. Because of the height requirement and the color of the bead, a 2D or manual inspection process was not possible because it would not provide the accuracy needed to inspect the consistent amount of RTV bead application.
The choice of a 3D camera system was important to prevent noise caused by the shiny machined surface of the part. Furthermore, the system needed to be fast enough to process the data within a few seconds and return the pass/fail information to the line PLC.
The system would communicate to our PreciScan controller, which includes an industrial PC hosting comXtream, the automation engine, and ScanXtream, the point cloud processing and viewing software.
The scanned data would be sent to ScanXtream to identify the RTV bead dimensional properties to provide further analysis and inspection.
Bead Inspection Setup:
The following parameters for the bead inspection tool are available in ScanXtream: