四波长激光准六自由度激光增材制造异形永磁件  

Heterogeneous Permanent Magnetic Parts by Laser Additive Manufacturing with Four-Wavelength-Laser and Quasi-Six-Degree-of-Freedom

作　　者：王涛[1,2] 朱惠芳 张翠亭 姚建铨 马俊杰[1,2] 何晓阳 吕雪亮[1] 牛世兴 

机构地区：[1]河北工业大学机械学院,天津300130 [2]南京津淞涵电力科技有限公司,江苏南京211316 [3]天津大学精密仪器与光电子工程学院,天津300130

出　　处：《激光与光电子学进展》2018年第1期136-142,共7页Laser & Optoelectronics Progress

基　　金：天津市应用基础与前沿技术研究计划一般项目(14JCYBJC19600)

摘　　要：提出了四波长激光多管喷粉准六自由度数控运动的激光增材新结构方法,分析了整体系统结构的线性空间与李子群函数,建立了系统的线性空间数学模型。采用多管喷粉机构喷涂定量Nd-Fe-B稀土永磁体成分,并利用闭环反馈控制四个激光束的功率与角度,进行了选择性与指向性激光辐照,实现了异形永磁件的激光增材成型,成型精度达20μm,最小宽度低于80μm,磁能积达474kJ·m3。A new structural method of laser additive manufacturing （LAM） with four-wavelength laser, multitube dusting, and quasi-six-degree-of-freedom numerical control motion is proposed. The overall system architecture is analyzed in terms of linear space and Lie subgroup function. A linear and spatial mathematical model for this system is established. The components of Nd-Fe-B rare earth permanent magnets are sprayed quantitatively by using the multi-dusting mechanism. In addition, by the control of the powers and angles of four laser beams, the selective and directional laser irradiation is conducted, and the LAM of heterogeneous permanent magnetic parts is realized with forming accuracy of 20 μm, minimum width of less than 80μm, and magnetic energy product of 474 kJ·m^3.

关 键 词：激光技术 激光增材制造 异形永磁件 准六自由度成型 钕铁硼永磁体材料 四波长激光 多管喷粉 

分 类 号：TN248[电子电信—物理电子学] TN29