High-precision Measurement System using Multi-laser and Multi-DOF of the Complex Surface 3 Profile

For the measurement of complex surfaces, this paper implements a high-precision measurement system. In this system, three high-precision line laser sensors are used, which have three degrees of freedom in motion. A self-developed external calibration algorithm is used to achieve high-precision measurement of complex surfaces. Experimental results show that the precision of this method on standard gauges is less than 5um, and the actual blade measurement precision is less than 15um.