Adaptive Slicing Algorithm Based on STL Model

Pan, Xiao Di; Chen, Kun; Zhang, Zheng Yan; Chen, Ding Fang; Li, Tao Tao

doi:10.4028/www.scientific.net/amm.288.241

Cited by 9 publications

(6 citation statements)

References 4 publications

(3 reference statements)

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“…The triangle facets stored in the STL model are disordered, representing that it is not able to provide the algorithm with topological relationships between geometries when used as input. Therefore, Pan et al [13] proposed an adaptive slicing algorithm to construct associations between triangles and their vertices in the triangle mesh. Zhang et al [14] use a hash table to build the overall topology of the STL model in advance and reduce the slice search range by establishing a slice relation matrix.…”

Section: Related Workmentioning

confidence: 99%

An Efficient Slicing Algorithm for Additive Manufacturing in Arbitrary Directions Based on Adjacent Triangles

Liu,

Xing

2024

IEEE Access

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Additive manufacturing is capable of forming part solids from a digital model of the workpiece, which often needs to be sliced due to the nature of the process of stacking materials layer by layer. Previous algorithms require more time to order the intersection points during slicing and only consider a fixed axis vector as the slicing direction. With the increasing complexity of the workpiece model, it is necessary to improve the efficiency of the slicing algorithm, and the given slicing direction should be flexible and convenient. Therefore, this paper proposes an efficient algorithm for slicing in any direction using the shared edges of adjacent triangles. Firstly, the model can be efficiently sliced in any direction by custom vectors, which is convenient for process validation; secondly, the shared edges of neighboring triangle faces intersecting the plane need to be calculated only once to reduce redundant calculations; finally, the ordered intersections of the constructed inner and outer contours are directly outputted without any additional sorting to reduce the running time. The experimental results show that compared with other algorithms, the proposed algorithm can improve the execution efficiency and eliminate the constraint that the slicing direction is fixed on the Z-axis, which is of application value and reference significance for additive.

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Section: Related Workmentioning

confidence: 99%

An Efficient Slicing Algorithm for Additive Manufacturing in Arbitrary Directions Based on Adjacent Triangles

Liu,

Xing

2024

IEEE Access

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“…Typically, layer thickness is constant during the slicing process; however, there are a number of examples for adaptive slicing [16][17][18] where the layer height is decreased when slicing regions of high detail or increased when there are less geometric features to be captured. These methods can increase the efficiency of the slicing process; however, use is only appropriate where one model is produced per build cycle.…”

Section: Review Of Related Workmentioning

confidence: 99%

An efficient triangle mesh slicing algorithm for all topologies in additive manufacturing

King

Rennie

Bennett³

2020

Int J Adv Manuf Technol

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To date, slicing algorithms for additive manufacturing is the most effective for favourable triangular mesh topologies; worst-case models, where a large percentage of triangles intersect each slice plane, take significantly longer to slice than a like-for-like file. In larger files, this results in a significant slicing duration, when models are both worst cases and contain more than 100,000 triangles. The research presented here introduces a slicing algorithm which can slice worst-case large models effectively. A new algorithm is implemented utilising an efficient contour construction method, with further adaptations, which make the algorithm suitable for all model topologies. Edge matching, which is an advanced sorting method, decreases the number of sorts per edge from n total number of intersections to two, alongside additional micro-optimisations that deliver the enhanced efficient contour construction algorithm. The algorithm was able to slice a worst-case model of 2.5 million triangles in the 1025s. Maximum improvement was measured as 9400% over the standard efficient contour construction method. Improvements were also observed in all parts in excess of 1000 triangles. The slicing algorithm presented offers novel methods that address the failings of other algorithms described in literature to slice worst-case models effectively.

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“…The productivity of step-and-scan lithography depends on the particulars of the specified trajectory to be followed for wafer stage and reticle stage [10,[15][16]. At the point of high productivity and high accuracy positioning two conflicting requirements have to be met.…”

Section: Formulation Of the Scanning Trajectorymentioning

confidence: 99%

“…On the other hand, there is a requirement to be met relating to limitations of control equipment used for positioning the stages with sufficient accuracy and stability. For balancing these conflicting requirements in an appropriate way and from the point of motion positioning accuracy, stability and the smoothness of a motion trajectory, the trajectories of scan movement and step movement both adopt the third-order polynomial curve [11][12][13][14][15][16].According to the optimization method of wafer exposure route [9], the typical scenario of continuous exposure scanning path for step-and-scan lithography is shown in Fig. 1.…”

Section: Formulation Of the Scanning Trajectorymentioning

confidence: 99%

See 1 more Smart Citation

The Motion-Overlap Scheme for Reducing the Time between Continuous Scans of Wafer Stage for Step-and-Scan Lithography

Pan

Chen

Zhou

2011

AMM

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During the exposure process of a step-and-scan lithography, the transitional time between continuous scans does not produce production efficiency in which no scanning occurs. To minimize the transitional time and therefore to improve the productivity we introduce the motion-overlap scheme, which inserts a step-move between the overrun phase and the phase before exposure of next field along the scanning direction for wafer stage during the continuous exposure process. The simulation results show that the motion-overlap scheme enables the total time of two continuous scans of four different exposure field sizes reduce 8.28%, 7.11%, 5.87% and 4.53%, respectively, compared with the conventional motion planning method. This indicates that the theoretical derivation of motion-overlap planning method is effective.

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Adaptive Slicing Algorithm Based on STL Model

Cited by 9 publications

References 4 publications

An Efficient Slicing Algorithm for Additive Manufacturing in Arbitrary Directions Based on Adjacent Triangles

An Efficient Slicing Algorithm for Additive Manufacturing in Arbitrary Directions Based on Adjacent Triangles

An efficient triangle mesh slicing algorithm for all topologies in additive manufacturing

The Motion-Overlap Scheme for Reducing the Time between Continuous Scans of Wafer Stage for Step-and-Scan Lithography

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