CAM planning for multi-axis laser additive manufacturing considering collisions

Plakhotnik, Denys; Glasmacher, Lothar; Vaneker, Thomas H.J.; Smetanin, Y.G.; Stautner, Marc; Murtezaoglu, Yavuz; Houten, Fred van

doi:10.1016/j.cirp.2019.04.007

Cited by 25 publications

(8 citation statements)

References 10 publications

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“…Compared with three-axis printing, multi-axis robotic printing system brings performance improvement but design problems such as interference detection and path planning when printing (Plakhotnik et al. , 2019).…”

Section: Research Statusmentioning

confidence: 99%

Multi-orientation adaptive slice and path generation based on support constraint and relationship matrix

Guo,

Zhang,

Zhang

et al. 2024

RIA

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Purpose The step effect and support structure generated by the manufacturing process of fused deposition molding parts increase the consumables cost and decrease the printing quality. Multiorientation printing helps improve the surface quality of parts and reduce support, but path interference exists between the printing layer and the layers printed. The purpose of this study is to design printing paths between different submodels to avoid interference when build orientation changed. Design/methodology/approach Considering support constraint, build orientation sequence is designed for submodels decomposed by model topology. The minimum printing angle between printing layers is analyzed. Initial path through the oriented bounding box is planned and slice interference relationship is then detected according to the projection topology mapping. Based on the relationship matrix of multiorientation slice, feasible path is calculated by directed graph (DG). Final printing path is determined under support constraint and checked by minimum printing angle. The simulation model of the robotic arm is established to verify the accessibility of printing path under the constraint of support and slice. Findings The proposed method can reduce support structure, decrease volume error and effectively solve the interference problem of the printing path for multiorientation slice. Originality/value The method based on projection topology mapping greatly improves the efficiency of interference detection. A feasible path calculated through DGs ensures the effectiveness of the printing path with the constraint of support and slice.

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Section: Research Statusmentioning

confidence: 99%

Multi-orientation adaptive slice and path generation based on support constraint and relationship matrix

Guo,

Zhang,

Zhang

et al. 2024

RIA

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“…As a laser-based DED is restricted by efficiency and an electron beam-or arc-based DED is restricted by the large heat input, the orientation of the tool should be tilted to prevent the fall of the material due to the effect of gravity or a protective gas flow. Moreover, as the tool paths in a world coordinate system are transformed to a coordinate system for the robotic arm (or other multiaxis platforms) in multiaxis printing, this often results in toolpaths with abrupt changes (Plakhotnik et al, 2019).…”

Section: Multiaxis Motionmentioning

confidence: 99%

Multiaxis wire and arc additive manufacturing for overhangs based on conical substrates

Dai

Zhang²,

et al. 2021

RPJ

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Purpose This paper aims to present a series of approaches for three-related issues in multiaxis in wire and arc additive manufacturing (WAAM) as follows: how to achieve a stable and robust deposition process and maintain uniform growth of the part; how to maintain consistent formation of a melt pool on the surface of the workpiece; and how to fabricate an overhanging structure without supports. Design/methodology/approach The principal component analysis-based path planning approach is proposed to compute the best scanning directions of slicing contours for the generation of filling paths, including zigzag paths and parallel skeleton paths. These printing paths have been experimented with in WAAM. To maintain consistent formation of a melt pool at overhanging regions, the authors introduce definitions for the overhanging point, overhanging distance and overhanging vector, with which the authors can compute and optimize the multiaxis motion. A novel fabricating strategy of depositing the overhanging segments as a support for the deposition of filling paths is presented. Findings The second principal component of a planar contour is a reasonable scanning direction to generate zigzag filling paths and parallel skeleton filling paths. The overhanging regions of a printing layer can be supported by pre-deposition of overhanging segments. Large overhangs can be successfully fabricated by the multiaxis WAAM process without supporting structures. Originality/value An intelligent approach of generating zigzag printing paths and parallel skeleton printing paths. Optimizations of depositing zigzag paths and parallel skeleton paths. Applications of overhanging point overhanging distance and overhanging vector for multiaxis motion planning. A novel fabricating strategy of depositing the overhanging segments as a support for the deposition of filling paths.

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“…Figure 8 (b) shows the structure of this AM system. Plakhotnik et al (2019) presented an approach to optimize the fabrication process in a five-DOF laser-based metal AM system, considering collisions. Another five-DOF extrusion-based machine was developed by (Nishikawa, Morimoto, and Hayashi 2019), their study also proposed an optimized path generation strategy to fabricate support-free products.…”

Section: Five-dof Ammentioning

confidence: 99%

A review of multiple degrees of freedom for additive manufacturing machines

Jiang

Newman

Zhong

2020

International Journal of Computer Integrated Manufacturing

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Currently, additive manufacturing (AM) technology has received significant attention from both academia and industry. AM is characterized by fabricating geometrically complex components in a layer-by-layer manner, and greatly reduces the geometric complexity restrictions compared with traditional manufacturing. As AM is no longer limited to the normal three degrees of freedom (DOF) (three-axis) systems, there are many new multi-DOF AM machines been developed with various aims. It is, therefore, necessary that a review of the topic with regard to multi-DOF AM is performed for future AM system development. This paper, focuses on reviewing publications related to multi-DOF AM according to the number of DOF on an AM machine. The major part of the paper aims to inspire both researchers and engineers to further develop and improve multi-DOF AM systems to achieve different goals. The final part of the paper discusses the findings together with future research directions.

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CAM planning for multi-axis laser additive manufacturing considering collisions

Cited by 25 publications

References 10 publications

Multi-orientation adaptive slice and path generation based on support constraint and relationship matrix

Multi-orientation adaptive slice and path generation based on support constraint and relationship matrix

Multiaxis wire and arc additive manufacturing for overhangs based on conical substrates

A review of multiple degrees of freedom for additive manufacturing machines

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