| With the rapid development in modern aerospace industry, it is usually necessary toprocess three-dimensional micro texture on the surface of large complex surface parts suchas airplane wings, radar cover and other marine propellers. The common technique is usingfive-axis CNC machine tools for precision milling/grinding, but it is difficult to acquire highprecision and efficiency processing performance, and also it is impossible to process flexiblematerials.Because the laser precision machining can make up for these shortcomings, this paperaims to study the following contents based on Laser Projective Ablation by GalvanometerScanning (LPAGS).(1) Based on the robot kinematics, the kinematics equation of FIDIA machine tool inLPAGS and the achieved the precise control of positive and reserve motion of FIDIAmachine tool based on the space matrix transform principle was studied in this essay.(2) Based on the space rigid transform principle, the matching algorithm about themodel and the workpiece model and the proposed a king of four-position holes algorithmwhich is more efficiency and accurate was studied in this essay.(3) In order to solve the distortion of dual galvanometer scanning, based on the bilinearinterpolation algorithm, the galvanometer correction system was studied. This systemfunctions consist of galvanometer correction, machine tool motion control and distancemeasurement.(4) According to the LPAGS, the motion error of five-axis machine tool, workpiecepositioning error, space projection delamination etching error and the oscillating mirrorcorrecting error was studied, and got a final evaluation of the overall error.(5) By the experimentations of laser etching process, the laser beam and material effectregular caused by the scanning speed, the surface curvature and the other influence of time and space constraints is concluded, which indicates that the3D surface etching line widthwith scanning speed increase and became smaller, laser power increase with increased. |
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