A Geometric Errors Calibration Based on 3D Laser Scanner for Five-Axis Mechanism

With the development of industrial automation, five-axis mechanism has been increasingly invested in various production scenarios. In addition to CNC mechanism tools, some five-axis mechanism used in non-cutting scenarios has also been gradually applied. For the five-axis mechanism, due to the assembly, there are all kinds of geometric errors, especially the accuracy of the rotary axis will greatly affect the positioning accuracy of the five-axis mechanism, so the geometric errors of the rotary axis need to be calibrated. In this paper, a method of scanning the calibration sphere with a 3D laser scanner is proposed to calibrate the geometric errors of the rotary axis of the five-axis mechanism, and the geometric errors calibration experiment and compensation experiment are carried out to prove the effectiveness of the proposed method. Compared with ballbar, laser tracker and other equipment, the method proposed in this paper is less costly and simpler to operate.