A Comparison between 3D Scanning and CMM Dimensional Inspection of Small Size Gas Turbine

The paper presents a comparison between Coordinate Measuring Machine and 3D white light scanning technologies as applied to the dimensional inspection of turbo-machinery parts such as turbine blade. The results were compared with the CAD model and each other. The results indicate that, even both methods are enough accurate with a slightly better accuracy for CMM, the operational speed and the variety of scanable surfaces give significant advantages to the 3D scanning method when prototypes require dimensional inspection by an alternative rapid route especially when dealing with objects with thin walls or sharp edges.

[1]  C. G. Armstrong,et al.  A Virtual Inspection Technique for Assessing the Dimensional Accuracy of Forged Compressor Blades Using FE Modeling and CMM Inspection , 2008 .

[2]  Chee Kai Chua,et al.  Rapid prototyping and tooling techniques: a review of applications for rapid investment casting , 2005 .

[3]  A.W.L. Yao,et al.  Applications of 3D scanning and reverse engineering techniques for quality control of quick response products , 2005 .

[4]  Dinghua Zhang,et al.  Cavity optimization for investment casting die of turbine blade based on reverse engineering , 2010 .

[5]  G. Sansoni,et al.  Combination of a Vision System and a Coordinate Measuring Machine for the Reverse Engineering of Freeform Surfaces , 2001 .

[6]  Enrico Vezzetti,et al.  Computer aided inspection: design of customer-oriented benchmark for noncontact 3D scanner evaluation , 2009 .

[7]  Colin Bradley,et al.  Reverse engineering employing a 3D laser scanner: A case study , 1996 .

[8]  Chia-Hsiang Menq,et al.  Integrated laser/CMM system for the dimensional inspection of objects made of soft material , 1995 .

[9]  Michael G. Strintzis,et al.  Stereo vision system for precision dimensional inspection of 3D holes , 2003, Machine Vision and Applications.

[10]  Tanneguy Redarce,et al.  A CAD-based 3D data acquisition strategy for inspection , 2003, Machine Vision and Applications.

[11]  A. Kung,et al.  Self calibration method for 3D roundness of spheres using an ultraprecision coordinate measuring machine. , 2005 .