In order to solve the current problems of the blade surface automatic measurement

a high precision automatic measurement fusion system was put forward. The self-developed measuring equipment and the electronic controlled turntable were combined into one complete measurement system. Using high precision calibration plane rotation

the high precision quaternion and the center position coordinates could be obtained for the system location through the plane fitting

virtual axis and angle calculation. The real time measurement and fusion of the blade could be realized by using the center coordinate and the four element number operation. The convergence of the threshold iterative closest point(ICP) to the fusion data was used to eliminate the error of mechanical rotation. Results show that the integrated precision of the system is 0.03-0.04mm

which can realize the high precision measurement of the engine blade automatically

efficiently and stably.