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Generating smooth parting lines for mold design for meshes

Li, Weishi, Martin, Ralph Robert and Langbein, Frank Curd 2007. Generating smooth parting lines for mold design for meshes. Presented at: ACM Symposium on Solid and Physical Modeling, Beijing, China, 4-6 June 2007. Proceedings, SPM 2007: ACM Symposium on Solid and Physical Modeling : Beijing, China, June 04-06, 2007. New York, USA: Association for Computing Machinery, pp. 193-204. 10.1145/1236246.1236274

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Abstract

This paper considers the mold design problem of computing a parting line for a complex mesh model, given a parting direction. Existing parting line algorithms are unsuitable for this case, as local variations in the orientations of the facets of such models lead to a parting line which zig-zags across the surface in an undesirable way. This paper presents a method to compute a smooth parting line which runs through a triangle band composed of triangles whose normals are approximately perpendicular to the parting direction. The skeleton of the triangle band is used to generate a structure representing distinct topological cycles, and to decompose the triangle band into singly-connected surface pieces, giving candidate paths. We choose a set of paths giving a good cycle; the final smooth parting line is then constructed by iteratively improving the quality of this cycle. Compliance in the physical material, or minor modifications to the surface itself, will ensure that such a parting line is appropriate for use.

Item Type: Conference or Workshop Item (Paper)
Date Type: Publication
Status: Published
Schools: Computer Science & Informatics
Subjects: Q Science > QA Mathematics > QA75 Electronic computers. Computer science
Uncontrolled Keywords: mesh ; mold design ; parting line
Publisher: Association for Computing Machinery
ISBN: 9781595936660; 1595936661
Last Modified: 18 Oct 2017 12:04
URI: http://orca.cf.ac.uk/id/eprint/5220

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