Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

STEP-NC Based Squashing Slicing Algorithm for Multi-Material and Multi-Directional Additive Process

Version 1 : Received: 27 June 2021 / Approved: 28 June 2021 / Online: 28 June 2021 (11:59:26 CEST)

How to cite: Um, J.; Park, J.M.; Stroud, I.A. STEP-NC Based Squashing Slicing Algorithm for Multi-Material and Multi-Directional Additive Process. Preprints 2021, 2021060647 (doi: 10.20944/preprints202106.0647.v1). Um, J.; Park, J.M.; Stroud, I.A. STEP-NC Based Squashing Slicing Algorithm for Multi-Material and Multi-Directional Additive Process. Preprints 2021, 2021060647 (doi: 10.20944/preprints202106.0647.v1).

Abstract

The paper describes problems with the current additive manufacturing chain before considering additive manufacturing as part of a modern manufacturing chain. Additive manufacturing can be used for near net-shape for finishing, for repair or for adding special features which cannot be made with traditional manufacturing. This paper describes how STEP-NC deals with these different scenarios in terms of accuracy, multi-material and variation of slice direction. The possibilities of multi-material objects also raises questions about the design of such objects and how these need to be handled by an advanced controller. The paper also describes non-planar slicing. Curved direction and cylindrical direction are shown to improve the accuracy of curved structure additive manufacturing. STEP-NC using boundary representation has better capability of depicting complex internal structures for additive processes. By using exact model of the final product represented by STEP-NC, the paper demonstrates improvements in data size reduction, slicing accuracy, and precise manipulation of internal structure.

Subject Areas

Additive manufacturing, STEP-NC, Boundary representation, Multi-materials

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