Software Design And Algorithm Optimization Of Multi-axis Laser Direct Metal Deposition System

In recent years,with the development of Metal Additive Manufacturing technology,Laser Direct Metal Deposition(LDMD)technology is becoming more and more important in the manufacturing industry,and has a broad application prospect in the field of aviation,medical treatment.At the same time,more and more researchers have found that the multi-axis LDMD technology has better manufacturing effect on the model with inclination angle.However,most researches are focused on specific models,or optimization of process parameters,and lack of a set of software systems that can directly generate its multi-axis processing code.In order to solve this problem,a multi-axis LDMD system software is designed in this thesis,including modelreading,data-slicing,path planning and processing code output.In the model-reading part,the corresponding data storage format is designed to reconstruct the topology of the model.For the problem of redundant data,the streamline algorithm based on Binary-Code is designed according to the precision of robot system.In the data-slicing part,the model surface normal vector is introduced to generate the posture vector information and outer contour data.At the same time,an improved Savitzky-Golay algorithm is designed to smooth the posture trajectory.In path planning and processing code output part,the contour type and parallel type filling information is generated,and a greedy algorithm is introduced to plan the path information.According to the relation between Lie group and Lie algebra,the conversion algorithm is designed to generate the robot system processing code.In this thesis,an experiment on space twisted blade manufacturing by using multiaxis LDMD system is designed to verify the feasibility of the software,the result shows that the design of software and optimization algorithm can accomplish the artifacts multi-axis manufacturing.