A large-format laser polishing processing method for metal additive components

Abstract

The invention discloses a large-scale laser polishing processing method for metal additive components, which can realize large-area precision polishing of workpieces to be processed. The system adopted in the method mainly includes: laser, XY digital scanning galvanometer, XY servo motion platform, embedded Servo control system, high bandwidth drive, computer, optical lifting platform. The processing process is: determine the scanning trajectory and scanning speed according to the size and polishing parameters of the metal additive component to be processed; determine the motion trajectory of the XY digital scanning galvanometer and the XY servo motion platform; control the XY digital by the embedded servo control system The scanning galvanometer and XY servo motion platform realize closed-loop control, and adopt a master-slave control structure. The invention realizes the automatic allocation of the reference trajectory of the galvanometer and the motion platform of the large-format laser polishing system, and introduces a master-slave control strategy on the basis of the two closed-loop subsystems of the galvanometer and the motion platform, thereby improving the polishing quality of the large-format laser polishing and polishing efficiency.

Description

technical field [0001] The invention relates to the technical field of laser polishing, in particular to a large-format laser polishing processing method for metal additive components. Background technique [0002] Metal additive components are usually processed by layer-by-layer build-up forming technology, and the lamination effect is obvious on the surface of the component. These rough surfaces have a serious impact on the performance of the component, especially the fatigue performance. Therefore, components need to be polished, and the consistency, stability and efficiency of the polishing process restrict the development and application of laser rapid prototyping technology. [0003] Laser polishing is a new type of material surface polishing method that has emerged in recent years. It uses a certain energy density and wavelength of laser beams to irradiate a specific workpiece to melt or evaporate a thin layer of material on the surface to obtain a smooth surface. It ...

AI Technical Summary

Problems solved by technology

However, in the polishing system using galvanometers, the processing area of ​​a single scan is limited, so large-format processing needs to be processed in blocks. On the one hand, this processing method reduces the processing quality and introduces splicing errors. On the other hand, On the one hand, the efficiency of laser processing is reduced, and it is impossible to achieve large-format, high-efficiency, and high-precision laser polishing of metal additive components

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