金属零件自动超轻结构化设计及激光增材制造

发布时间：2018-03-01 00:34

本文关键词： 增材制造激光选区熔化超轻结构金属零件　出处：《红外与激光工程》2016年11期 　论文类型：期刊论文

【摘要】：为解决金属超轻结构零件设计技术复杂、设计周期长、难添加蒙皮进行增材制造等难题,提出一种基于激光选区熔化增材制造工艺的金属零件自动超轻结构化设计方法:根据激光选区熔化工艺特点,编制程序将原始零件CAD模型自动转化为设定孔隙率的带蒙皮类蜂窝状超轻结构零件模型,且其数据可直接驱动设备实现零件增材制造。研究了带蒙皮超轻结构的构造形式及设计方法;探讨了合适的成型棱长及合理蒙皮结构形式;成功实现复杂零件自动带蒙皮超轻结构化设计及增材制造,所得零件孔隙率误差2.79%,表明能较准确按预期减重。该方法能根据原始零件CAD模型自动、快速地构建带蒙皮金属超轻结构零件模型,大大减轻该类零件设计负担及提高其实用性。
[Abstract]:In order to solve the problems such as complex design technology, long design period and difficult to add skin to manufacture the metal ultra-light structure parts, This paper presents an automatic ultra-light structural design method for metal parts based on laser selective melting and increasing material manufacturing technology: according to the characteristics of laser selective melting process, The CAD model of the original parts is automatically transformed into a honeycomb ultra-light structure part model with a set porosity. The structure and design method of ultra-light structure with skinned skin are studied, and the suitable shaping length and reasonable skinned structure form are discussed, and the material increasing manufacture of parts can be realized directly by the data drive equipment, and the structure and design method of ultra-light structure with skin cover are studied in this paper. The automatic ultra-light structure design of complicated parts with skin and material increasing are successfully realized. The porosity error of the parts is 2.79, which shows that the weight loss can be achieved accurately as expected. The method can be automatically based on the CAD model of the original parts. In order to reduce the design burden and improve the practicability, the model of ultra-light structure parts with sheathed metal is constructed quickly.
【作者单位】：韶关学院物理与机电工程学院;湖南科技大学先进矿山装备教育部工程研究中心;
【分类号】：TH122;;TG665

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