Higher Precision, Higher Efficiency – Optical Batch Inspection Solution for Aeroengine Blades

Small blades constitute a major category of aeroengine blades, featuring complex profiles, tiny radii on leading and trailing edges (minimum diameter below 0.1 mm), thin twisted structures, abundant dimensional features, large production volumes and stringent manufacturing & inspection precision requirements.

Current mainstream CMM inspection suffers from the following drawbacks:
✦ Severe radius compensation errors occur when measuring the high-curvature small radii of leading and trailing edges, which greatly compromise measurement accuracy;
✦ Low inspection efficiency fails to meet the measurement demands of massive and multi-type blade batches.

Aeroengine Blades
To improve blade measurement accuracy and efficiency, Weijing 3D has developed an automated 3D measurement system for blades. The system supports automatic loading and unloading of multiple blades as well as automatic 3D scanning. Based on measurement data, it automatically analyzes blade chord length, blade thickness, edge radius and other parameters to judge product qualification.

- System Layout Schematic Diagram -
Blade Dimensions
The system inspects blades with heights ranging from 30 mm to 300 mm.

System Composition
The system mainly consists of manual clamping, robotic automatic loading & unloading, and automated blue-light 3D measurement modules.

Measurement Accuracy
Equipped with the high-precision PowerScan 12M 3D measurement probe featuring 12-megapixel camera resolution, it delivers a maximum single-shot measurement accuracy of 0.008 mm.

Inspection Efficiency
The inspection cycle takes 2 to 4 minutes per workpiece, with a batch capacity of 8 blades.