【标题】Metal 3D Printer
【参考中译】金属3D打印机
【类型】 期刊
【作者】 Bruce A. Bennett
【摘要】 The Applied Science & Technology Research Organization, commonly known as ASTRO America, announced that it has been selected to manage a new U.S. Army initiative to develop and deliver a hull-scale tool using metal additive manufacturing technology. Known as the "Jointless Hull Project," the effort aims to provide improved production speeds, reduced production costs, reduced vehicle weight, greater vehicle performance, and increased survivability.
【参考中译】 美国应用科学与技术研究组织(俗称ASTRO America)宣布，它已被选中管理美国陆军的一项新计划，该计划旨在开发和交付一种使用金属添加剂制造技术的船体规模的工具。该项目被称为“无缝船体项目”，旨在提高生产速度、降低生产成本、减轻车辆重量、提高车辆性能和生存能力。
【来源】 Aerospace & Defense Technology 2021, vol.6, no.7
【入库时间】 2023/7/26
【标题】3D printer prints casting cores for all-electric Cadillac Celestiq
【参考中译】3D打印机打印全电动凯迪拉克Celestiq铸件芯
【作者】 Volker Karow
【摘要】 Tooling & Equipment International (TEI), one of the largest users of 3D sand printing in the US, has purchased its third Voxeljet VX4000 3D printer. As a supplier to General Motors, TEI is using the world's largest 3D sand printer to produce cast cores for the series production of large-format, weight-saving structural components for the Cadillac Celestiq. By implementing 3D printing in the development and construction of the components, OEM manufacturers can realize completely new, function-optimized designs. Suppliers benefit from the fast and flexible integration of 3D printed cores into existing production lines.
【参考中译】 美国最大的3D砂纸打印用户之一国际工具与设备公司(TEI)已经购买了其第三台Voxeljet VX4000 3D打印机。作为通用汽车的供应商，泰科正在使用世界上最大的S 3D打砂机生产铸件芯，用于批量生产凯迪拉克Celestiq大尺寸、轻量化的结构部件。通过在部件的开发和建造中实施3D打印，OEM制造商可以实现全新的、功能优化的设计。3D打印芯快速灵活地集成到现有生产线中，使供应商受益。
【来源】 Aluminium 2023, vol.99, no.4
【标题】An error identification and compensation method for Cartesian 3D printer based on specially designed test artifact
【参考中译】一种基于特殊设计测试伪影的笛卡尔3D打印机误差辨识与补偿方法
【关键词】 Error compensation method; Test artifact; Additive manufacturing; Kinematic errors; Cartesian 3D printer
【参考中译】 误差补偿方法；测试伪影；加法制造；运动误差；笛卡尔3D打印机
【作者】 Sun Xizhi; Wu Tao; Li Tianjian; Li Jungang; Ding Xiaohong
【摘要】 Abstract The printing accuracy is one of the most important metrics to evaluate the additive manufacturing (AM) machine. In this paper, an error identification and compensation method for Cartesian 3D printer is presented based on a specially designed test artifact to improve printing accuracy. The relationship between the geometric errors of the printed object and the kinematic errors of the printer axes is established based on the theory of the multi-body system. A series of formulas are derived to separate the kinematic errors of each axis from the geometric errors. To extract the geometric errors required for the mathematical calculations, an artifact with the special features is proposed and printed. The geometric errors of the characteristic points on the artifact are measured by a coordinate measuring machine (CMM). From the measured geometric errors, kinematic errors of the printer can be identified, and can be further compensated by adjusting the CAD model of the object. Two compensated algorithms are established; one uses the fitted curves of the kinematic errors, and the other uses the average kinematic error values. Printing tests and case studies are performed to verify the effectiveness of the proposed method. The results show that the proposed method can improve printing accuracy of the Cartesian 3D printer.
【参考中译】 摘要印刷精度是衡量加法制造设备性能的重要指标之一。为了提高打印精度，提出了一种基于测试伪像的笛卡儿3D打印机误差识别与补偿方法。基于多体系统理论，建立了打印物几何误差与打印轴运动误差之间的关系。推导了将各轴的运动误差与几何误差分离的一系列公式。为了提取数学计算所需的几何误差，提出并打印了一种具有特殊特征的伪影。利用三坐标测量机(CMM)测量伪影上特征点的几何误差。根据测量的几何误差，可以识别打印机的运动误差，并可以通过调整对象的CAD模型来进一步补偿。建立了两种补偿算法：一种是利用运动误差的拟合曲线，另一种是利用平均运动误差值。通过打印测试和案例分析，验证了该方法的有效性。结果表明，该方法可以提高笛卡儿3D打印机的打印精度。
【来源】 The International Journal of Advanced Manufacturing Technology 2023, vol.125, no.9/10