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Dimensional precision and robustness of Fused Deposition Modelling (FDM) additive manufacturing processes

熔融沉积成型 (FDM) 增材制造工艺的尺寸精度和稳健性

基本信息

批准号：
1971221
负责人：
金额：
--
依托单位：
University of Cambridge
依托单位国家：
英国
项目类别：
Studentship
财政年份：
2018
资助国家：
英国
起止时间：
2018 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=studentship-1971221
关键词：
Dimensional precision robustness Fused Deposition

项目摘要

Additive Manufacturing (AM) presents designers with a unique set of new possibilities, to design new components with new shapes. Fused Deposition Modelling has become one of the most ubiquitous of AM processes, due to the comparatively low cost of these machines. However, the utility of FDM to designers is limited by the performance capabilities of these machines, especially with complex or small structures. As a result, much of the use is by 'hobbyists' and many parts require several iterations of production due to inaccuracies in manufacture. Whilst most machine brochures cite 'resolution' and axis speed as an indicator of performance, dimensional precision is extremely often not indicated.This project aims to explore the dimensional capability of 3D printing technologies, more specifically that of FDM machines. The first output will be a greater understanding of the current capability of different machines, which is essential data if these technologies are to be used be designers. This data will be used to deliver the second output, the re-design of an FDM machine using the principles of robust machine tool design. Experiments will be conducted on as wide a set of FDM machines as is possible. This will include a baseline study of machine repeatability as well as the characterisation of dimensional accuracy over the full build volume. These experiments will also establish the interdependencies and impact of different process settings on print quality.It is expected that analysis of the outputs from the experimental phase in relation to the underlying machine design principles adopted, will determine how the machine design might influence the variations seen. Outputs from this phase will be used to design a new FDM machine, with the objective of producing parts with a high level of dimensional accuracy and repeatability.The project covers the EPSRC research areas of Engineering Design and Manufacturing Technologies.

增材制造 (AM) 为设计师提供了一系列独特的新可能性，可以设计具有新形状的新组件。由于这些机器的成本相对较低，熔融沉积建模已成为最普遍的增材制造工艺之一。然而，FDM 对设计人员的实用性受到这些机器性能的限制，特别是对于复杂或小型结构。因此，大部分使用都是由“业余爱好者”进行的，并且由于制造中的不准确，许多零件需要多次迭代生产。虽然大多数机器手册都会引用“分辨率”和轴速度作为性能指标，但通常不会指出尺寸精度。该项目旨在探索 3D 打印技术的尺寸能力，更具体地说是 FDM 机器的尺寸能力。第一个输出将是对不同机器的当前功能的更深入的了解，如果设计人员要使用这些技术，这是必不可少的数据。该数据将用于提供第二个输出，即使用稳健机床设计原理重新设计 FDM 机床。实验将在尽可能广泛的 FDM 机器上进行。这将包括机器可重复性的基线研究以及整个构建体积的尺寸精度表征。这些实验还将建立不同工艺设置对打印质量的相互依赖性和影响。预计对与所采用的基本机器设计原理相关的实验阶段的输出进行分析将确定机器设计如何影响所见的变化。此阶段的成果将用于设计新型 FDM 机器，目标是生产具有高尺寸精度和可重复性的零件。该项目涵盖 EPSRC 的工程设计和制造技术研究领域。