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A Laser Scanner-Stage Synchronized System Supporting the Large-Area Precision Polishing of Additive-Manufactured Metallic Surfaces

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Engineering 2021年第12期7卷 1732-1740页

作者： Mengjia Cui Libin Lu Zhen Zhang Yingchun Guan State Key Laboratory of Tribology&Institute of Manufacturing Engineering Department of Mechanical EngineeringTsinghua UniversityBeijing 100084China School of Mechanical Engineering and Automation Beihang UniversityBeijing 100083China Beijing Key Laboratory of Precision/Ultra-Precision Manufacturing Equipments and Control Tsinghua UniversityBeijing 100084China National Engineering Laboratory of Additive Manufacturing for Large Metallic Components Beihang UniversityBeijing 100083China International Research Institute for Multidisciplinary Science Beihang UniversityBeijing 100083China Advanced Manufacturing Center Ningbo Institute of TechnologyBeihang UniversityNingbo 315100China

This paper proposes a scanner–stage synchronized approach emphasizing a novel control structure for the laser polishing of Inconel 718 components manufactured by selective laser melting in order to address increasing demands for high surface quality in metal additive *** proposed synchronized control system is composed of a motion decomposition module and an error synthesis *** experimental results show that stitching errors can be avoided thanks to continuous motion during laser ***,in comparison with the existing step-scan method,the processing efficiency of the proposed method is improved by 38.22%and the surface quality of the laser-polished area is significantly enhanced due to a more homogeneous distribution of the laser energy during the material phase *** proposed synchronized system paves the way for high-speed,high-precision,and large-area laser material processing without stitching errors.

关键词： Laser polishing stitching errors Synchronized control system Additive manufacturing

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