Research On Key Technology Of Laser Marking Five-Axis CNC Worktable System

With continuous development of laser marking technology,more and more workpieces marking methods begin to change from traditional labeling to laser marking.Among many laser marking machines,fiber laser marking machines stand out due to their many advantages such as low power consumption,small size,low noise,and declining prices.Optical fiber laser marking machine can be used for the marking of two-dimensional plane figures,characters,and patterns.However,it cannot be applied to the marking of irregularly shaped workpieces surfaces.In order to solve this problem,this paper designs a laser marking five-axis linkage system based on the fiber laser marking machine and the five-axis linkage CNC machine.The system can be applied not only to two-dimensional plane marking,but also to the marking of complex curved surface workpieces.The main research content of the full text is as follows:1.On the basic structure of the fiber laser marking machine,design an overall structure of a five-axis CNC table mechanical system.Use SolidWorks for concrete structural design and the coordination of five axes from five axes X,Y,Z,B,and C.Build an overall control system of the machine--"five axis CNC table + fiber laser marking",according to the marking process of fiber laser marking machine.2.Construct a five-axis table motion model,and analyze the freedom of it.By combining the two-dimensional scanning of the laser galvanometer,the whole system realizes five linkage marks of seven degrees of freedom.Taking into account the requirements of the best focal length required for laser marking,the kinematic analysis and solution of the five-axis table are performed,the topological structure of the entire system kinematic model is drawn,and the coordinate transformation of the system is performed.According to the motion of the five-axis table and scanning of the laser galvanometer,the kinematics equation is obtained and solved by the translation and rotation transformation from the current marking processing position to the next marking processing position movement.What is also obtained is the five-axis parametric equation five-axis numerical control table X,Y,Z,B,C during the marking process.Through theoretical argumentation,the design of the structure is reasonable.3.Software development for each module of the five-axis CNC laser marking system: starting from the five-axis CNC motion module,laser galvanometer module,graphic editing module,and processing display module,the development of the realization of each module is completed;the control of the entire 5-axis laser marking system is realized;and the laser marking of any workpiece is realized.4.The analysis and study of the marking of specific workpieces,including the study of the marking of the auger and the marking of the surface of the teapot.From the analysis of specific physical objects,marking trajectories are extracted.Using interpolation algorithm and vector one-to-one correspondence principle,five-axis linkage laser marking is achieved.By proposing the use of laser marking head and marking surface parallel to the specific conditions of the revised interpolation the algorithm allows three-axis interpolation to be applied to five-axis laser marking.Finally,the error sources of five-axis CNC laser marking system are analyzed.