Large-format laser polishing system for metal additive component and machining method

Abstract

The invention discloses a large-format laser polishing system for a metal additive component and a machining method, which are capable of achieving large-area precision polishing of a to-be-machined workpiece. The polishing system mainly comprises a laser, an XY digital scanning galvanometer, an XY servo motion platform, an embedded servo control system, a high-bandwidth driver, a computer and anoptical lifting platform. The machining process comprises the steps that a scanning track and a scanning speed are determined according to the size and polishing parameters of a to-be-machined metal additive component; movement tracks of two systems of the XY digital scanning galvanometer and the XY servo motion platform are determined; and the XY digital scanning galvanometer and the XY servo motion platform are controlled by the embedded servo control system to realize closed-loop control, and a master-slave control architecture is adopted. According to the system and the method, automatic distribution of reference tracks of the galvanometer and the motion platform of the large-format laser polishing system is achieved, a master-slave control strategy is introduced on the basis of the two closed-loop subsystems of the galvanometer and the motion platform, and the polishing quality and the polishing efficiency of large-format laser polishing are improved.

Description

technical field [0001] The invention relates to the technical field of laser polishing, in particular to a large-format laser polishing system and a processing method for a metal additive component. Background technique [0002] Metal additive components are usually formed by a layer-by-layer manufacturing technology. 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, the 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 appeared in recent years. It uses a laser beam with a certain energy density and wavelength to irradiate a specific workpiece to melt or evaporate a thin layer of material on the surface to obtain a smoot...

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

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