用于增材制造的分层几何误差补偿程序

IF 3.4 4区 工程技术 Q1 ENGINEERING, MECHANICAL Rapid Prototyping Journal Pub Date : 2024-01-02 DOI:10.1108/rpj-04-2023-0144
Fernando Peña, J. C. Rico, P. Zapico, G. Valiño, Sabino Mateos
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引用次数: 0

摘要

本文的目的是提供一种新的平面内补偿几何误差的程序,这种误差通常出现在增材制造(AM)工艺制造零件时沉积的层中,而与层几何形状的复杂程度无关。考虑到对齐和形状偏差,补偿算法生成新的补偿轮廓,尽可能与标称轮廓相匹配。为了评估补偿效果,我们对两个案例进行了分析。在第一个案例中,零件没有制造出来,但使用预测模型模拟了变形。研究限制/启示虽然大轮廓显示的偏差接近零,但在应用于小轮廓时,发现了尺寸过度补偿。如果应用的补偿因子考虑到被分析层的轮廓尺寸和其他可能产生影响的几何参数,则补偿程序可以得到改进。
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A layerwise geometric error compensation procedure for additive manufacturing
Purpose The purpose of this paper is to provide a new procedure for in-plane compensation of geometric errors that often appear in the layers deposited by an additive manufacturing (AM) process when building a part, regardless of the complexity of the layer geometry. Design/methodology/approach The procedure is based on comparing the real layer contours to the nominal ones extracted from the STL model of the part. Considering alignment and form deviations, the compensation algorithm generates new compensated contours that match the nominal ones as closely as possible. To assess the compensation effectiveness, two case studies were analysed. In the first case, the parts were not manufactured, but the distortions were simulated using a predictive model. In the second example, the test part was actually manufactured, and the distortions were measured on a coordinate measuring machine. Findings The geometric deviations detected in both case studies, as evaluated by various quality indicators, reduced significantly after applying the compensation procedure, meaning that the compensated and nominal contours were better matched both in shape and size. Research limitations/implications Although large contours showed deviations close to zero, dimensional overcompensation was observed when applied to small contours. The compensation procedure could be enhanced if the applied compensation factor took into account the contour size of the analysed layer and other geometric parameters that could have an influence. Originality/value The presented method of compensation is applicable to layers of any shape obtained in any AM process.
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来源期刊
Rapid Prototyping Journal
Rapid Prototyping Journal 工程技术-材料科学:综合
CiteScore
8.30
自引率
10.30%
发文量
137
审稿时长
4.6 months
期刊介绍: Rapid Prototyping Journal concentrates on development in a manufacturing environment but covers applications in other areas, such as medicine and construction. All papers published in this field are scattered over a wide range of international publications, none of which actually specializes in this particular discipline, this journal is a vital resource for anyone involved in additive manufacturing. It draws together important refereed papers on all aspects of AM from distinguished sources all over the world, to give a truly international perspective on this dynamic and exciting area. -Benchmarking – certification and qualification in AM- Mass customisation in AM- Design for AM- Materials aspects- Reviews of processes/applications- CAD and other software aspects- Enhancement of existing processes- Integration with design process- Management implications- New AM processes- Novel applications of AM parts- AM for tooling- Medical applications- Reverse engineering in relation to AM- Additive & Subtractive hybrid manufacturing- Industrialisation
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