Abstract
Robot-operated inspection of aircraft engine turbine rotor guide vane segment geometry
Highlights
Stators (Fig. 1) are manufactured by precision vacuum casting
Low thrust aircraft engines feature monolithic stator castings with a number of vanes which range from ten-odd to several dozens
The robot-assisted geometrical inspection is performed with the ABB IRB 1600 robot manipulator equipped with the Atos Core 135 3D scanner (Fig. 3) and the Atos Professional control and measurement software suite
Summary
Stators (Fig. 1) are manufactured by precision vacuum casting. Low thrust aircraft engines feature monolithic stator castings with a number of vanes which range from ten-odd to several dozens. The processing conditions of casting make it difficult to manufacture large stators for large aircraft engines. In this case, a stator is built as an assembly of ten-odd segments, each with 3 to 6 vanes (Fig. 2). The internal channels pass a cooling medium Being hollow, they reduce the engine weight. The component weight is reduced and the stator segment and vane cooling system performance is improved by making the vane casting walls thinner. The process involves determination of 28 specific measurement points on each vane with a template, and a handheld flaw detector is applied to measure the vane wall thickness at each of the determined points. This solution is labour intensive and has a long processing time
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