基于激光冲击强化改善增材制造零件残余应力的自动化控制方法  

An Automatic Control Method Based on Laser Peening to Improve Residual Stress of Additive Manufacturing Parts

作　　者：刘殿海[1,2] 李论 周波[1,2] 赵吉宾 LIU Dian-hai;LI Lun;ZHOU Bo;ZHAO Ji-bin(State Key Laboratory of Robotics,Shenyang Institute of Automation,Chinese Academy of Sciences,Shenyang 110016,China;Institutes for Robotics and Intelligent Manufacturing,Chinese Academy of Sciences,Shenyang 110169,China)

机构地区：[1]中国科学院沈阳自动化研究所机器人学国家重点实验室,辽宁沈阳110016 [2]中国科学院机器人与智能制造创新研究院,辽宁沈阳110169

出　　处：《真空》2020年第2期83-87,共5页Vacuum

基　　金：高性能激光同步送粉全工艺流程协调控制及质量保障方法(2016YFB11005);整体叶盘叶片自寻位研抛加工及表面完整性控制(51775542)。

摘　　要：针对金属激光直接沉积增材制造零件产生的残余应力,采用激光冲击强化技术冲击零件表面,有效改善材料的微观组织,提高力学性能,减少或延迟裂纹的形成和扩展,提高金属材料的疲劳寿命、耐磨性和耐腐蚀性。通过搭建由机器人、激光器、光路系统、约束层系统组成的自动化激光冲击强化系统,采用离线编程、加工环境仿真、系统集成控制等方法,并将光路系统置于真空环境中,安全高效地解决了多种零件表面的激光冲击强化工艺过程。Laser peening technology is adopted to improve the residual stress caused by metal laser deposition on the surface of additive manufacturing parts.Laser peening effectively improves the microstructure of materials,improves mechanical properties and also reduces or delays the formation and propagation of cracks,the fatigue life,wear resistance and corrosion resistance of metal materials are effectively improved.A laser peening automation system constituted by robot,laser,optical path system etc,uses off-line programming,machining environment simulation,system integration control and other methods to solve technological process on the surface of various parts,and the light path system is put in vacuum environment.

关 键 词：激光冲击强化 增材制造 自动化控制 轨迹规划 真空 

分 类 号：TN249[电子电信—物理电子学] TP29[自动化与计算机技术—检测技术与自动化装置]