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Aiming at the acquirement of the turbine blade profile data with both high accuracy and efficiency, a non-contact measuring system based on line-laser displacement sensor and four-axis numerical-control platform has been developed. This article mainly describes the presented solution of the calibration of the laser axis and the rotation axis. With this solution, a measurement data merging algorithm was designed and applied to generate the blade profile from a set of multi-view point clouds. At the end of the article, an experiment was performed to verify the efficiency and accuracy of the system.

Development of a Four-axis Laser Measuring System for Turbine Blade Profile