摘要
选区激光熔化(SLM)是一种金属增材制造技术,它利用激光逐层熔化金属粉末累加成形,在复杂零部件和轻量化结构成形上优势明显。分析了液压系统中复杂流道结构的典型特征,提出了传统加工流道局部压损过大、轻量化程度不足两个问题。基于SLM技术,进行了伺服阀集成块的设计成形,实现了集成块整体37%的减重,提取的典型流道仿真结果显示,压力损失降低了50%。最后提出了一种综合约束分析、模型设计和仿真评估的复杂液压流道轻量化设计方法,初步显示了增材制造液压集成块在轻量化和改善油液流动特性上的潜力。
Selective Laser Melting(SLM),as one type of additive manufacturing technology,uses a laser to selectively melt metal powders in a layer-by-layer manner.The technique is able to process very complex structures and lightweight parts.On the basis of conventional manufacturing process,hydraulic passageways are suffered from excessive pressure loss,high weight,and large size.We design a servo valve manifold block with weight reduction of 37%based on the SLM technology.The simulation results show that pressure loss is reduced by 50%.Finally,we propose a SLM-based lightweight design of complex hydraulic passageways based on constraint analysis,model design,and simulation.The research shows the potential of applying additive manufacturing to manufacture hydraulic manifold blocks,which can achieve lightweight and improve flow characteristics.
作者
张磊
祝毅
杨华勇
ZHANG Lei;ZHU Yi;YANG Hua-yong(State Key Laboratory of Fluid Power and Mechatronic Systems,Zhejiang University,Hangzhou,Zhejiang 310027)
出处
《液压与气动》
北大核心
2018年第11期1-7,共7页
Chinese Hydraulics & Pneumatics
基金
国家自然科学基金(51775486)
关键词
复杂流道
轻量化
集成块
增材制造
complex passageways
lightweight
manifold block
additive manufacturing
