Modeling And Analysis Technology Research Of Rotary Axis Error Of Laser Machining System

With the development of my country's industrial technology,the use of laser processing technology has become more and more extensive,and it has penetrated into many areas that support the country's economic development.With the development of science and technology and laser processing equipment,the precision requirements for laser processing systems are getting higher and higher.Among them,the rotary shaft system is a key part that affects the accuracy of the laser processing system.Therefore,the shaft system in the laser processing system carrying out analysis and research is of great significance.This article mainly analyzes the structure and error modeling of the optical path pointing system and the workpiece positioning system in the laser processing system,explores the source of the error and analyzes and corrects the error,and improves the accuracy of the entire laser processing system.The main contents of this paper are as follows:Firstly,study the principle of the two-dimensional galvanometer system,analyze the structure of the optical path pointing system and model the optical path pointing system.The quaternion theory is used to construct the beam pointing model of the galvanometer system under error-free conditions,and the corresponding relationship between the deflection angle of the galvanometer and the position coordinates of each point on the scanning plane is determined,and the scanning error of the galvanometer is compared with the installation error direction.The system carries out modeling and simulation analysis,and carries out error correction and compensation based on the analysis results.Then,analyze the structure of the two-dimensional rotary positioning system,and characterize the error of the rotary shaft system and the error caused by the measuring instrument in the two-dimensional rotary positioning system.The quaternion theory is used to construct the pointing vector model based on the electronic level.A function containing six errors is established,and the error of the two-dimensional rotary positioning system is simulated and analyzed by MATLAB.Finally,set up an experimental platform for the optical path pointing system,conduct beam pointing experiments.The position sensitive detector(PSD)was used as the feedback link to perform specific trajectory scanning,and then the verticality error was compensated by increasing the correction and compensation method of the deflection angle;The control part of the two-dimensional rotating positioning system of the motion control card designs the experimental scheme of the two-dimensional rotating positioning system,and uses the particle swarm algorithm to optimize the solution and identify the amount of error.In general,the error analysis and correction of the rotary shaft system of the laser processing system can effectively improve the accuracy of the optical path pointing and workpiece positioning system,thereby improving the accuracy of the entire laser processing system.This is in the high-end equipment manufacturing industry and fine micro.The application prospect of processing has far-reaching significance.