Non-contact Robotic Measurement of Jet Engine Components with 3D Optical Scanner and UTT Method

摘要

This paper presents a method for the robot-assisted geometric inspection of an aircraft engine turbine stator segment, involving two robots. The first robot was an ABB IRB 1600 with an optical 3D scanner. The second robot was an ABB IRB 140, to automatically inspect the stator vanes at 168 points by the application of a UTT method. If the casting geometry tolerances are met, characteristic coordinates of points across the casting are determined for their further use during an alternative robot-assisted vane wall thickness measurement process. The operating principle of the test stand measurement system is presented, with a specific focus on the measurement strategy. The results of the wall thickness measurements performed on stator vanes are presented in the report. The correctness of the solution has been proved with scans and measurements of two turbine rotor guide vane segments of an aircraft engine provided by courtesy of Consolidated Precision Products Poland sp. z o.o.