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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


          

刊名：The International Journal of Advanced Manufacturing Technology
作者：Sun Xizhi（Brunel University London）
Wu Tao（Wuhan Second Ship Design & Research Institute）
Li Tianjian（University of Shanghai for Science and Technology）
Li Jungang（University of Shanghai for Science and Technology）
Ding Xiaohong（University of Shanghai for Science and Technology）
刊号：737E0004
ISSN：0268-3768
出版年：2023
年卷期：2023, vol.125, no.9/10
页码：4185-4199
总页数：15
分类号：TP23
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
语种：eng
文摘：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。



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