Research and Design of Laser Scribing Robot Based on Surface Matching

As the technology which is commonly used on the cutting large irregular curved sheets has many disadvantages, such as incorrect cutting path, poor cutting accuracy. By analyzing the sheet cutting process, a three-dimensional and five-axis laser scribing robot is developed, which is based on surface matching. This robot can acquire the data of the workpiece surface automatically through the non-contact measurement. The date model can be generated by computer. The matching method is based on curvature and arc length of feature points. By matching data model and ideal model, robot can choose the optimal trajectory for laser cutting. From experimental results, the robot is designed rationally. It can make the scribing path closest to the ideal track and has extensive utility value.