基金项目:国家重点研发计划项目(编号:2021YFE0203500);中央引导地方科技发展资金专项(编号:桂科ZY21195029);广西研究生教育创新计划项目(编号:JGY2021001)收稿日期:2022-12-13激光选区熔化数据前处理的回顾与展望*龙雨,王楚,汤辉亮,吴晓暄,吴蔚,张江兆(广西大学机械工程学院激光智能制造与精密加工所,南宁530004)摘要:选区激光熔化(SelectiveLaserMelting,SLM)数据前处理主要包括支撑设计、切片方法、路径规划等内容。首先总结了支撑生成算法及自支撑中的模型拓扑优化和悬垂结构拓扑优化算法,提出了对自支撑优化算法的展望,然后回顾了传统的STL模型切片和当前热门的无STL切片方法,针对路径规划环节总结了常用的路径规划算法的生成方法及优缺点。在此基础上,结合目前激光选区熔化的研究热点:梯度材料打印、仿生结构打印、非传统光源打印、热/力性能定制打印等,对当前路径规划的新需求——路径评估与检测、单层路径优化、多层路径协同优化进行了分析与展望。最后,给出了支撑设计、切片方法和路径规划未来的研究方向。关键词:激光选区熔化;自支撑设计;模型切片;路径规划中图分类号:TH164;TN249文献标志码:A文章编号:1009-9492(2023)03-0009-08ReviewandProspectofDataPre-processingforSelectiveLaserMeltingLongYu,WangChu,TangHuiliang,WuXiaoxuan,WuWei,ZhangJiangzhao(InstituteofLaserIntelligentManufacturingandPrecisionProcessing,SchoolofMechanicalEngineering,GuangxiUniversity,Nanning530004,China)Abstract:Selectivelasermelting(SLM)datapreprocessingmainlyincludessupportdesign,slicingmethod,pathplanning,etc.Firstofall,thispapersummarizedthesupportgenerationalgorithmandthemodeltopologyoptimizationandsuspensionstructuretopologyoptimizationalgorithmsinself-supportingalgorithm,putforwardtheprospectoftheself-supportingoptimizationalgorithm,thenretrospectedthetraditionalSTLmodelslicingalgorithmsandthenewestSTL-freeslicingalgorithm,andsummarizesthegenerationalgorithm,advantagesanddisadvantagesofthegeneralpathplanningalgorithmsforthekeylinkofpathplanning.Onthisbasis,byintroducingthecurrentresearchhotspotsoflaserselectivemelting:gradientmaterial,bionicstructure,non-traditionalbeamprinting,thermal/mechanicalperformancepri...